lavf/webm_chunk: Fix NULL dereference

The earlier version of the webm_chunk muxer had several bugs:

1. If the first packet of an audio stream didn't have a PTS of zero,
then no chunk will be started before a packet is delivered to the
underlying Matroska/WebM muxer, i.e. the AVFormatContext used to write
these packets had a NULL as AVIOContext for output. This is behind the
crash in ticket #5752.

2. If an error happens during writing a packet, the underlyimg
Matroska/WebM muxer context is freed. This leads to a use-after-free
coupled with a double-free in webm_chunk_write_trailer (which supposes
that the underlying AVFormatContext is still valid).

3. Even when no error occurs at all, webm_chunk_write_trailer is still
buggy: After the underlying Matroska/WebM muxer has written its trailer,
ending the chunk implicitly flushes it again which is illegal at this
point.

These bugs have been fixed.

Fixes #5752.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 8c6ee7626b)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

.gitignore

@@ -18,13 +18,6 @@
 *.so.*
 *.swp
 *.ver
-*.version
-*.metal.air
-*.metallib
-*.metallib.c
-*.ptx
-*.ptx.c
-*.ptx.gz
 *_g
 \#*
 .\#*
@@ -33,11 +26,10 @@
 /ffmpeg
 /ffplay
 /ffprobe
-/config.asm
-/config.h
-/config_components.h
+/ffserver
+/config.*
 /coverage.info
+/avversion.h
 /lcov/
 /src
 /mapfile
-/tools/python/__pycache__/

.mailmap

@@ -1,24 +0,0 @@
-<jeebjp@gmail.com> <jan.ekstrom@aminocom.com>
-<sw@jkqxz.net> <mrt@jkqxz.net>
-<u@pkh.me> <cboesch@gopro.com>
-<zhilizhao@tencent.com> <quinkblack@foxmail.com>
-<zhilizhao@tencent.com> <wantlamy@gmail.com>
-<modmaker@google.com> <modmaker-at-google.com@ffmpeg.org>
-<stebbins@jetheaddev.com> <jstebbins@jetheaddev.com>
-<barryjzhao@tencent.com> <mypopydev@gmail.com>
-<barryjzhao@tencent.com> <jun.zhao@intel.com>
-<josh@itanimul.li> <joshdk@obe.tv>
-<michael@niedermayer.cc> <michaelni@gmx.at>
-<linjie.justin.fu@gmail.com> <linjie.fu@intel.com>
-<linjie.justin.fu@gmail.com> <fulinjie@zju.edu.cn>
-<ceffmpeg@gmail.com> <cehoyos@ag.or.at>
-<ceffmpeg@gmail.com> <cehoyos@rainbow.studorg.tuwien.ac.at>
-<ffmpeg@gyani.pro> <gyandoshi@gmail.com>
-<atomnuker@gmail.com> <rpehlivanov@obe.tv>
-<lizhong1008@gmail.com> <zhong.li@intel.com>
-<lizhong1008@gmail.com> <zhongli_dev@126.com>
-<andreas.rheinhardt@gmail.com> <andreas.rheinhardt@googlemail.com>
-rcombs <rcombs@rcombs.me> <rodger.combs@gmail.com>
-<thilo.borgmann@mail.de> <thilo.borgmann@googlemail.com>
-<liuqi05@kuaishou.com> <lq@chinaffmpeg.org>
-<ruiling.song83@gmail.com> <ruiling.song@intel.com>

.travis.yml

@@ -6,22 +6,18 @@ os:
 addons:
   apt:
     packages:
-      - nasm
+      - yasm
       - diffutils
 compiler:
   - clang
   - gcc
-matrix:
-    exclude:
-        - os: osx
-          compiler: gcc
 cache:
   directories:
     - ffmpeg-samples
 before_install:
-  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update; fi
+  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update --all; fi
 install:
-  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew install nasm; fi
+  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew install yasm; fi
 script:
   - mkdir -p ffmpeg-samples
   - ./configure --samples=ffmpeg-samples --cc=$CC

CREDITS

@@ -1,6 +1,6 @@
-See the Git history of the project (https://git.ffmpeg.org/ffmpeg) to
+See the Git history of the project (git://source.ffmpeg.org/ffmpeg) to
 get the names of people who have contributed to FFmpeg.
 
 To check the log, you can type the command "git log" in the FFmpeg
 source directory, or browse the online repository at
-https://git.ffmpeg.org/ffmpeg
+http://source.ffmpeg.org.

INSTALL.md

@@ -1,4 +1,4 @@
-## Installing FFmpeg
+#Installing FFmpeg:
 
 1. Type `./configure` to create the configuration. A list of configure
 options is printed by running `configure --help`.

LICENSE.md

@@ -21,11 +21,10 @@ Specifically, the GPL parts of FFmpeg are:
     - `compat/solaris/make_sunver.pl`
     - `doc/t2h.pm`
     - `doc/texi2pod.pl`
-    - `libswresample/tests/swresample.c`
+    - `libswresample/swresample-test.c`
     - `tests/checkasm/*`
     - `tests/tiny_ssim.c`
 - the following filters in libavfilter:
-    - `signature_lookup.c`
     - `vf_blackframe.c`
     - `vf_boxblur.c`
     - `vf_colormatrix.c`
@@ -35,13 +34,13 @@ Specifically, the GPL parts of FFmpeg are:
     - `vf_eq.c`
     - `vf_find_rect.c`
     - `vf_fspp.c`
+    - `vf_geq.c`
     - `vf_histeq.c`
     - `vf_hqdn3d.c`
+    - `vf_interlace.c`
     - `vf_kerndeint.c`
-    - `vf_lensfun.c` (GPL version 3 or later)
     - `vf_mcdeint.c`
     - `vf_mpdecimate.c`
-    - `vf_nnedi.c`
     - `vf_owdenoise.c`
     - `vf_perspective.c`
     - `vf_phase.c`
@@ -50,14 +49,12 @@ Specifically, the GPL parts of FFmpeg are:
     - `vf_pullup.c`
     - `vf_repeatfields.c`
     - `vf_sab.c`
-    - `vf_signature.c`
     - `vf_smartblur.c`
     - `vf_spp.c`
     - `vf_stereo3d.c`
     - `vf_super2xsai.c`
     - `vf_tinterlace.c`
     - `vf_uspp.c`
-    - `vf_vaguedenoiser.c`
     - `vsrc_mptestsrc.c`
 
 Should you, for whatever reason, prefer to use version 3 of the (L)GPL, then
@@ -83,47 +80,41 @@ affect the licensing of binaries resulting from the combination.
 
 ### Compatible libraries
 
-The following libraries are under GPL version 2:
-- avisynth
+The following libraries are under GPL:
 - frei0r
 - libcdio
-- libdavs2
 - librubberband
 - libvidstab
 - libx264
 - libx265
 - libxavs
-- libxavs2
 - libxvid
 
 When combining them with FFmpeg, FFmpeg needs to be licensed as GPL as well by
 passing `--enable-gpl` to configure.
 
-The following libraries are under LGPL version 3:
-- gmp
-- libaribb24
-- liblensfun
-
-When combining them with FFmpeg, use the configure option `--enable-version3` to
-upgrade FFmpeg to the LGPL v3.
-
-The VMAF, mbedTLS, RK MPI, OpenCORE and VisualOn libraries are under the Apache License
-2.0. That license is incompatible with the LGPL v2.1 and the GPL v2, but not with
+The OpenCORE and VisualOn libraries are under the Apache License 2.0. That
+license is incompatible with the LGPL v2.1 and the GPL v2, but not with
 version 3 of those licenses. So to combine these libraries with FFmpeg, the
 license version needs to be upgraded by passing `--enable-version3` to configure.
 
-The smbclient library is under the GPL v3, to combine it with FFmpeg,
-the options `--enable-gpl` and `--enable-version3` have to be passed to
-configure to upgrade FFmpeg to the GPL v3.
-
 ### Incompatible libraries
 
 There are certain libraries you can combine with FFmpeg whose licenses are not
 compatible with the GPL and/or the LGPL. If you wish to enable these
 libraries, even in circumstances that their license may be incompatible, pass
-`--enable-nonfree` to configure. This will cause the resulting binary to be
+`--enable-nonfree` to configure. But note that if you enable any of these
+libraries the resulting binary will be under a complex license mix that is
+more restrictive than the LGPL and that may result in additional obligations.
+It is possible that these restrictions cause the resulting binary to be
 unredistributable.
 
 The Fraunhofer FDK AAC and OpenSSL libraries are under licenses which are
 incompatible with the GPLv2 and v3. To the best of our knowledge, they are
 compatible with the LGPL.
+
+The NVENC library, while its header file is licensed under the compatible MIT
+license, requires a proprietary binary blob at run time, and is deemed to be
+incompatible with the GPL. We are not certain if it is compatible with the
+LGPL, but we require `--enable-nonfree` even with LGPL configurations in case
+it is not.

MAINTAINERS

@@ -11,11 +11,17 @@ A (CC <address>) after the name means that the maintainer prefers to be CC-ed on
 patches and related discussions.
 
 
+Project Leader
+==============
+
+  final design decisions
+
+
 Applications
 ============
 
 ffmpeg:
-  ffmpeg.c                              Michael Niedermayer, Anton Khirnov
+  ffmpeg.c                              Michael Niedermayer
 
 ffplay:
   ffplay.c                              Marton Balint
@@ -23,6 +29,9 @@ ffplay:
 ffprobe:
   ffprobe.c                             Stefano Sabatini
 
+ffserver:
+  ffserver.c                            Reynaldo H. Verdejo Pinochet
+
 Commandline utility code:
   cmdutils.c, cmdutils.h                Michael Niedermayer
 
@@ -33,9 +42,8 @@ QuickTime faststart:
 Miscellaneous Areas
 ===================
 
-documentation                           Stefano Sabatini, Mike Melanson, Timothy Gu, Gyan Doshi
-project server day to day operations    Árpád Gereöffy, Michael Niedermayer, Reimar Doeffinger, Alexander Strasser, Nikolay Aleksandrov
-project server emergencies              Árpád Gereöffy, Reimar Doeffinger, Alexander Strasser, Nikolay Aleksandrov
+documentation                           Stefano Sabatini, Mike Melanson, Timothy Gu, Lou Logan
+project server                          Árpád Gereöffy, Michael Niedermayer, Reimar Doeffinger, Alexander Strasser, Nikolay Aleksandrov
 presets                                 Robert Swain
 metadata subsystem                      Aurelien Jacobs
 release management                      Michael Niedermayer
@@ -47,12 +55,12 @@ Communication
 
 website                                 Deby Barbara Lepage
 fate.ffmpeg.org                         Timothy Gu
-Trac bug tracker                        Alexander Strasser, Michael Niedermayer, Carl Eugen Hoyos
-Patchwork                               Andriy Gelman
-mailing lists                           Baptiste Coudurier
-Twitter                                 Reynaldo H. Verdejo Pinochet
+Trac bug tracker                        Alexander Strasser, Michael Niedermayer, Carl Eugen Hoyos, Lou Logan
+mailing lists                           Baptiste Coudurier, Lou Logan
+Google+                                 Paul B Mahol, Michael Niedermayer, Alexander Strasser
+Twitter                                 Lou Logan, Reynaldo H. Verdejo Pinochet
 Launchpad                               Timothy Gu
-ffmpeg-security                         Andreas Cadhalpun, Carl Eugen Hoyos, Clément Bœsch, Michael Niedermayer, Reimar Doeffinger, rcombs, wm4
+ffmpeg-security                         Andreas Cadhalpun, Carl Eugen Hoyos, Clément Bœsch, Michael Niedermayer, Reimar Doeffinger, Rodger Combs, wm4
 
 
 libavutil
@@ -73,7 +81,6 @@ Other:
   float_dsp                             Loren Merritt
   hash                                  Reimar Doeffinger
   hwcontext_cuda*                       Timo Rothenpieler
-  hwcontext_vulkan*                     Lynne
   intfloat*                             Michael Niedermayer
   integer.c, integer.h                  Michael Niedermayer
   lzo                                   Reimar Doeffinger
@@ -84,7 +91,6 @@ Other:
   rational.c, rational.h                Michael Niedermayer
   rc4                                   Reimar Doeffinger
   ripemd.c, ripemd.h                    James Almer
-  tx*                                   Lynne
 
 
 libavcodec
@@ -110,12 +116,15 @@ Generic Parts:
     lzw.*                               Michael Niedermayer
   floating point AAN DCT:
     faandct.c, faandct.h                Michael Niedermayer
+  Non-power-of-two MDCT:
+    mdct15.c, mdct15.h                  Rostislav Pehlivanov
   Golomb coding:
     golomb.c, golomb.h                  Michael Niedermayer
   motion estimation:
     motion*                             Michael Niedermayer
   rate control:
     ratecontrol.c                       Michael Niedermayer
+    libxvid_rc.c                        Michael Niedermayer
   simple IDCT:
     simple_idct.c, simple_idct.h        Michael Niedermayer
   postprocessing:
@@ -131,16 +140,12 @@ Codecs:
   8bps.c                                Roberto Togni
   8svx.c                                Jaikrishnan Menon
   aacenc*, aaccoder.c                   Rostislav Pehlivanov
-  adpcm.c                               Zane van Iperen
   alacenc.c                             Jaikrishnan Menon
   alsdec.c                              Thilo Borgmann, Umair Khan
-  amfenc*                               Dmitrii Ovchinnikov
-  aptx.c                                Aurelien Jacobs
   ass*                                  Aurelien Jacobs
   asv*                                  Michael Niedermayer
   atrac3plus*                           Maxim Poliakovski
-  audiotoolbox*                         rcombs
-  avs2*                                 Huiwen Ren
+  audiotoolbox*                         Rodger Combs
   bgmc.c, bgmc.h                        Thilo Borgmann
   binkaudio.c                           Peter Ross
   cavs*                                 Stefan Gehrer
@@ -151,13 +156,11 @@ Codecs:
   ccaption_dec.c                        Anshul Maheshwari, Aman Gupta
   cljr                                  Alex Beregszaszi
   cpia.c                                Stephan Hilb
+  crystalhd.c                           Philip Langdale
   cscd.c                                Reimar Doeffinger
-  cuviddec.c                            Timo Rothenpieler
-  dca*                                  foo86
-  dfpwm*                                Jack Bruienne
+  cuvid.c                               Timo Rothenpieler
   dirac*                                Rostislav Pehlivanov
   dnxhd*                                Baptiste Coudurier
-  dolby_e*                              foo86
   dpcm.c                                Mike Melanson
   dss_sp.c                              Oleksij Rempel
   dv.c                                  Roman Shaposhnik
@@ -181,24 +184,19 @@ Codecs:
   interplayvideo.c                      Mike Melanson
   jni*, ffjni*                          Matthieu Bouron
   jpeg2000*                             Nicolas Bertrand
-  jpegxl*                               Leo Izen
   jvdec.c                               Peter Ross
   lcl*.c                                Roberto Togni, Reimar Doeffinger
   libcelt_dec.c                         Nicolas George
-  libcodec2.c                           Tomas Härdin
   libdirac*                             David Conrad
-  libdavs2.c                            Huiwen Ren
-  libjxl*.c, libjxl.h                   Leo Izen
   libgsm.c                              Michel Bardiaux
   libkvazaar.c                          Arttu Ylä-Outinen
-  libopenh264enc.c                      Martin Storsjo, Linjie Fu
   libopenjpeg.c                         Jaikrishnan Menon
   libopenjpegenc.c                      Michael Bradshaw
+  libschroedinger*                      David Conrad
   libtheoraenc.c                        David Conrad
   libvorbis.c                           David Conrad
   libvpx*                               James Zern
   libxavs.c                             Stefan Gehrer
-  libxavs2.c                            Huiwen Ren
   libzvbi-teletextdec.c                 Marton Balint
   lzo.h, lzo.c                          Reimar Doeffinger
   mdec.c                                Michael Niedermayer
@@ -211,11 +209,9 @@ Codecs:
   mqc*                                  Nicolas Bertrand
   msmpeg4.c, msmpeg4data.h              Michael Niedermayer
   msrle.c                               Mike Melanson
-  msrleenc.c                            Tomas Härdin
   msvideo1.c                            Mike Melanson
   nuv.c                                 Reimar Doeffinger
-  nvdec*, nvenc*                        Timo Rothenpieler
-  omx.c                                 Martin Storsjo, Aman Gupta
+  nvenc*                                Timo Rothenpieler
   opus*                                 Rostislav Pehlivanov
   paf.*                                 Paul B Mahol
   pcx.c                                 Ivo van Poorten
@@ -223,7 +219,7 @@ Codecs:
   ptx.c                                 Ivo van Poorten
   qcelp*                                Reynaldo H. Verdejo Pinochet
   qdm2.c, qdm2data.h                    Roberto Togni
-  qsv*                                  Mark Thompson, Zhong Li, Haihao Xiang
+  qsv*                                  Mark Thompson
   qtrle.c                               Mike Melanson
   ra144.c, ra144.h, ra288.c, ra288.h    Roberto Togni
   resample2.c                           Michael Niedermayer
@@ -233,9 +229,9 @@ Codecs:
   rv10.c                                Michael Niedermayer
   s3tc*                                 Ivo van Poorten
   smc.c                                 Mike Melanson
+  smvjpegdec.c                          Ash Hughes
   snow*                                 Michael Niedermayer, Loren Merritt
   sonic.c                               Alex Beregszaszi
-  speedhq.c                             Steinar H. Gunderson
   srt*                                  Aurelien Jacobs
   sunrast.c                             Ivo van Poorten
   svq3.c                                Michael Niedermayer
@@ -244,10 +240,10 @@ Codecs:
   tta.c                                 Alex Beregszaszi, Jaikrishnan Menon
   ttaenc.c                              Paul B Mahol
   txd.c                                 Ivo van Poorten
-  v4l2_*                                Jorge Ramirez-Ortiz
   vc2*                                  Rostislav Pehlivanov
   vcr1.c                                Michael Niedermayer
-  videotoolboxenc.c                     Rick Kern, Aman Gupta
+  vda_h264_dec.c                        Xidorn Quan
+  videotoolboxenc.c                     Rick Kern
   vima.c                                Paul B Mahol
   vorbisdec.c                           Denes Balatoni, David Conrad
   vorbisenc.c                           Oded Shimon
@@ -263,16 +259,18 @@ Codecs:
   xan.c                                 Mike Melanson
   xbm*                                  Paul B Mahol
   xface                                 Stefano Sabatini
+  xvmc.c                                Ivan Kalvachev
   xwd*                                  Paul B Mahol
 
 Hardware acceleration:
+  crystalhd.c                           Philip Langdale
   dxva2*                                Hendrik Leppkes, Laurent Aimar, Steve Lhomme
   d3d11va*                              Steve Lhomme
-  mediacodec*                           Matthieu Bouron, Aman Gupta
-  vaapi*                                Haihao Xiang
-  vaapi_encode*                         Mark Thompson, Haihao Xiang
+  mediacodec*                           Matthieu Bouron
+  vaapi*                                Gwenole Beauchesne
+  vaapi_encode*                         Mark Thompson
   vdpau*                                Philip Langdale, Carl Eugen Hoyos
-  videotoolbox*                         Rick Kern, Aman Gupta
+  videotoolbox*                         Rick Kern
 
 
 libavdevice
@@ -282,8 +280,7 @@ libavdevice
 
 
   avfoundation.m                        Thilo Borgmann
-  android_camera.c                      Felix Matouschek
-  decklink*                             Marton Balint
+  decklink*                             Deti Fliegl
   dshow.c                               Roger Pack (CC rogerdpack@gmail.com)
   fbdev_enc.c                           Lukasz Marek
   gdigrab.c                             Roger Pack (CC rogerdpack@gmail.com)
@@ -292,6 +289,7 @@ libavdevice
   libdc1394.c                           Roman Shaposhnik
   opengl_enc.c                          Lukasz Marek
   pulse_audio_enc.c                     Lukasz Marek
+  qtkit.m                               Thilo Borgmann
   sdl                                   Stefano Sabatini
   sdl2.c                                Josh de Kock
   v4l2.c                                Giorgio Vazzana
@@ -330,10 +328,8 @@ Filters:
   avf_avectorscope.c                    Paul B Mahol
   avf_showcqt.c                         Muhammad Faiz
   vf_blend.c                            Paul B Mahol
-  vf_bwdif                              Thomas Mundt (CC <thomas.mundt@hr.de>)
   vf_chromakey.c                        Timo Rothenpieler
   vf_colorchannelmixer.c                Paul B Mahol
-  vf_colorconstancy.c                   Mina Sami    (CC <minas.gorgy@gmail.com>)
   vf_colorbalance.c                     Paul B Mahol
   vf_colorkey.c                         Timo Rothenpieler
   vf_colorlevels.c                      Paul B Mahol
@@ -347,9 +343,7 @@ Filters:
   vf_hqx.c                              Clément Bœsch
   vf_idet.c                             Pascal Massimino
   vf_il.c                               Paul B Mahol
-  vf_(t)interlace                       Thomas Mundt (CC <thomas.mundt@hr.de>)
   vf_lenscorrection.c                   Daniel Oberhoff
-  vf_libplacebo.c                       Niklas Haas
   vf_mergeplanes.c                      Paul B Mahol
   vf_mestimate.c                        Davinder Singh
   vf_minterpolate.c                     Davinder Singh
@@ -362,15 +356,12 @@ Filters:
   vf_ssim.c                             Paul B Mahol
   vf_stereo3d.c                         Paul B Mahol
   vf_telecine.c                         Paul B Mahol
-  vf_tonemap_opencl.c                   Ruiling Song
   vf_yadif.c                            Michael Niedermayer
   vf_zoompan.c                          Paul B Mahol
 
 Sources:
   vsrc_mandelbrot.c                     Michael Niedermayer
 
-dnn                                     Yejun Guo
-
 libavformat
 ===========
 
@@ -389,13 +380,7 @@ Muxers/Demuxers:
   afc.c                                 Paul B Mahol
   aiffdec.c                             Baptiste Coudurier, Matthieu Bouron
   aiffenc.c                             Baptiste Coudurier, Matthieu Bouron
-  alp.c                                 Zane van Iperen
-  amvenc.c                              Zane van Iperen
-  apm.c                                 Zane van Iperen
   apngdec.c                             Benoit Fouet
-  argo_asf.c                            Zane van Iperen
-  argo_brp.c                            Zane van Iperen
-  argo_cvg.c                            Zane van Iperen
   ass*                                  Aurelien Jacobs
   astdec.c                              Paul B Mahol
   astenc.c                              James Almer
@@ -407,45 +392,38 @@ Muxers/Demuxers:
   brstm.c                               Paul B Mahol
   caf*                                  Peter Ross
   cdxl.c                                Paul B Mahol
-  codec2.c                              Tomas Härdin
   crc.c                                 Michael Niedermayer
-  dashdec.c                             Steven Liu
-  dashenc.c                             Karthick Jeyapal
   daud.c                                Reimar Doeffinger
-  dfpwmdec.c                            Jack Bruienne
   dss.c                                 Oleksij Rempel
-  dtsdec.c                              foo86
   dtshddec.c                            Paul B Mahol
   dv.c                                  Roman Shaposhnik
   electronicarts.c                      Peter Ross
   epafdec.c                             Paul B Mahol
-  evc*                                  Samsung (Dawid Kozinski)
   ffm*                                  Baptiste Coudurier
   flic.c                                Mike Melanson
   flvdec.c                              Michael Niedermayer
   flvenc.c                              Michael Niedermayer, Steven Liu
   gxf.c                                 Reimar Doeffinger
   gxfenc.c                              Baptiste Coudurier
-  hlsenc.c                              Christian Suloway, Steven Liu
+  hls.c                                 Anssi Hannula
+  hls encryption (hlsenc.c)             Christian Suloway, Steven Liu
   idcin.c                               Mike Melanson
   idroqdec.c                            Mike Melanson
   iff.c                                 Jaikrishnan Menon
-  imf*                                  Pierre-Anthony Lemieux
   img2*.c                               Michael Niedermayer
   ipmovie.c                             Mike Melanson
   ircam*                                Paul B Mahol
   iss.c                                 Stefan Gehrer
-  jpegxl*                               Leo Izen
   jvdec.c                               Peter Ross
-  kvag.c                                Zane van Iperen
   libmodplug.c                          Clément Bœsch
+  libnut.c                              Oded Shimon
   libopenmpt.c                          Josh de Kock
   lmlm4.c                               Ivo van Poorten
   lvfdec.c                              Paul B Mahol
   lxfdec.c                              Tomas Härdin
-  matroska.c                            Aurelien Jacobs, Andreas Rheinhardt
-  matroskadec.c                         Aurelien Jacobs, Andreas Rheinhardt
-  matroskaenc.c                         David Conrad, Andreas Rheinhardt
+  matroska.c                            Aurelien Jacobs
+  matroskadec.c                         Aurelien Jacobs
+  matroskaenc.c                         David Conrad
   matroska subtitles (matroskaenc.c)    John Peebles
   metadata*                             Aurelien Jacobs
   mgsts.c                               Paul B Mahol
@@ -460,7 +438,8 @@ Muxers/Demuxers:
   mpegtsenc.c                           Baptiste Coudurier
   msnwc_tcp.c                           Ramiro Polla
   mtv.c                                 Reynaldo H. Verdejo Pinochet
-  mxf*                                  Baptiste Coudurier, Tomas Härdin
+  mxf*                                  Baptiste Coudurier
+  mxfdec.c                              Tomas Härdin
   nistspheredec.c                       Paul B Mahol
   nsvdec.c                              Francois Revol
   nut*                                  Michael Niedermayer
@@ -468,9 +447,9 @@ Muxers/Demuxers:
   oggdec.c, oggdec.h                    David Conrad
   oggenc.c                              Baptiste Coudurier
   oggparse*.c                           David Conrad
+  oggparsedaala*                        Rostislav Pehlivanov
   oma.c                                 Maxim Poliakovski
   paf.c                                 Paul B Mahol
-  pp_bnk.c                              Zane van Iperen
   psxstr.c                              Mike Melanson
   pva.c                                 Ivo van Poorten
   pvfdec.c                              Paul B Mahol
@@ -489,7 +468,6 @@ Muxers/Demuxers:
   rtpdec_vc2hq.*, rtpenc_vc2hq.*        Thomas Volkert
   rtpdec_vp9.c                          Thomas Volkert
   rtpenc_mpv.*, rtpenc_aac.*            Martin Storsjo
-  s337m.c                               foo86
   sbgdec.c                              Nicolas George
   sdp.c                                 Martin Storsjo
   segafilm.c                            Mike Melanson
@@ -515,9 +493,7 @@ Protocols:
   bluray.c                              Petri Hintukainen
   ftp.c                                 Lukasz Marek
   http.c                                Ronald S. Bultje
-  libsrt.c                              Zhao Zhili
   libssh.c                              Lukasz Marek
-  libzmq.c                              Andriy Gelman
   mms*.c                                Ronald S. Bultje
   udp.c                                 Luca Abeni
   icecast.c                             Marvin Scholz
@@ -541,12 +517,9 @@ Operating systems / CPU architectures
 =====================================
 
 Alpha                                   Falk Hueffner
-MIPS                                    Manojkumar Bhosale, Shiyou Yin
-LoongArch                               Shiyou Yin
+MIPS                                    Nedeljko Babic
 Mac OS X / PowerPC                      Romain Dolbeau, Guillaume Poirier
 Amiga / PowerPC                         Colin Ward
-Linux / PowerPC                         Lauri Kasanen
-RISC-V                                  Rémi Denis-Courmont
 Windows MinGW                           Alex Beregszaszi, Ramiro Polla
 Windows Cygwin                          Victor Paesa
 Windows MSVC                            Matthew Oliver, Hendrik Leppkes
@@ -570,12 +543,9 @@ Ganesh Ajjanagadde
 Henrik Gramner
 Ivan Uskov
 James Darnley
-Jan Ekström
 Joakim Plate
-Jun Zhao
 Kieran Kunhya
 Kirill Gavrilov
-Limin Wang
 Martin Storsjö
 Panagiotis Issaris
 Pedro Arthur
@@ -596,11 +566,8 @@ Releases
 If you want to maintain an older release, please contact us
 
 
-GnuPG Fingerprints and IRC nicknames of maintainers and contributors
-====================================================================
-
-IRC nicknames are in parentheses. These apply
-to the IRC channels listed on the website.
+GnuPG Fingerprints of maintainers and contributors
+==================================================
 
 Alexander Strasser            1C96 78B7 83CB 8AA7 9AF5 D1EB A7D8 A57B A876 E58F
 Anssi Hannula                 1A92 FF42 2DD9 8D2E 8AF7 65A9 4278 C520 513D F3CB
@@ -614,34 +581,24 @@ Daniel Verkamp                78A6 07ED 782C 653E C628 B8B9 F0EB 8DD8 2F0E 21C7
 FFmpeg release signing key    FCF9 86EA 15E6 E293 A564 4F10 B432 2F04 D676 58D8
 Ganesh Ajjanagadde            C96A 848E 97C3 CEA2 AB72 5CE4 45F9 6A2D 3C36 FB1B
 Gwenole Beauchesne            2E63 B3A6 3E44 37E2 017D 2704 53C7 6266 B153 99C4
-Haihao Xiang (haihao)         1F0C 31E8 B4FE F7A4 4DC1 DC99 E0F5 76D4 76FC 437F
 Jaikrishnan Menon             61A1 F09F 01C9 2D45 78E1 C862 25DC 8831 AF70 D368
-James Almer                   7751 2E8C FD94 A169 57E6 9A7A 1463 01AD 7376 59E0
 Jean Delvare                  7CA6 9F44 60F1 BDC4 1FD2 C858 A552 6B9B B3CD 4E6A
-Leo Izen (Traneptora)         B6FD 3CFC 7ACF 83FC 9137 6945 5A71 C331 FD2F A19A
 Loren Merritt                 ABD9 08F4 C920 3F65 D8BE 35D7 1540 DAA7 060F 56DE
-Lynne                         FE50 139C 6805 72CA FD52 1F8D A2FE A5F0 3F03 4464
+Lou Logan                     7D68 DC73 CBEF EABB 671A B6CF 621C 2E28 82F8 DC3A
 Michael Niedermayer           9FF2 128B 147E F673 0BAD F133 611E C787 040B 0FAB
-                              DD1E C9E8 DE08 5C62 9B3E 1846 B18E 8928 B394 8D64
 Nicolas George                24CE 01CE 9ACC 5CEB 74D8 8D9D B063 D997 36E5 4C93
-Niklas Haas (haasn)           1DDB 8076 B14D 5B48 32FC 99D9 EB52 DA9C 02BA 6FB4
 Nikolay Aleksandrov           8978 1D8C FB71 588E 4B27 EAA8 C4F0 B5FC E011 13B1
 Panagiotis Issaris            6571 13A3 33D9 3726 F728 AA98 F643 B12E ECF3 E029
 Peter Ross                    A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B
 Philip Langdale               5DC5 8D66 5FBA 3A43 18EC 045E F8D6 B194 6A75 682E
-Pierre-Anthony Lemieux (pal)  F4B3 9492 E6F2 E4AF AEC8 46CB 698F A1F0 F8D4 EED4
-Ramiro Polla                  7859 C65B 751B 1179 792E DAE8 8E95 8B2F 9B6C 5700
 Reimar Doeffinger             C61D 16E5 9E2C D10C 8958 38A4 0899 A2B9 06D4 D9C7
 Reinhard Tartler              9300 5DC2 7E87 6C37 ED7B CA9A 9808 3544 9453 48A4
 Reynaldo H. Verdejo Pinochet  6E27 CD34 170C C78E 4D4F 5F40 C18E 077F 3114 452A
 Robert Swain                  EE7A 56EA 4A81 A7B5 2001 A521 67FA 362D A2FC 3E71
 Sascha Sommer                 38A0 F88B 868E 9D3A 97D4 D6A0 E823 706F 1E07 0D3C
 Stefano Sabatini              0D0B AD6B 5330 BBAD D3D6 6A0C 719C 2839 FC43 2D5F
-Steinar H. Gunderson          C2E9 004F F028 C18E 4EAD DB83 7F61 7561 7797 8F76
 Stephan Hilb                  4F38 0B3A 5F39 B99B F505 E562 8D5C 5554 4E17 8863
-Thilo Borgmann (thilo)        CE1D B7F4 4D20 FC3A DD9F FE5A 257C 5B8F 1D20 B92F
 Tiancheng "Timothy" Gu        9456 AFC0 814A 8139 E994 8351 7FE6 B095 B582 B0D4
 Tim Nicholson                 38CF DB09 3ED0 F607 8B67 6CED 0C0B FC44 8B0B FC83
-Tomas Härdin (thardin)        A79D 4E3D F38F 763F 91F5 8B33 A01E 8AE0 41BB 2551
+Tomas Härdin                  A79D 4E3D F38F 763F 91F5 8B33 A01E 8AE0 41BB 2551
 Wei Gao                       4269 7741 857A 0E60 9EC5 08D2 4744 4EFA 62C1 87B9
-Zane van Iperen (zane)        61AE D40F 368B 6F26 9DAE 3892 6861 6B2D 8AC4 DCC5

Makefile

@@ -1,5 +1,5 @@
 MAIN_MAKEFILE=1
-include ffbuild/config.mak
+include config.mak
 
 vpath %.c    $(SRC_PATH)
 vpath %.cpp  $(SRC_PATH)
@@ -11,21 +11,47 @@ vpath %.asm  $(SRC_PATH)
 vpath %.rc   $(SRC_PATH)
 vpath %.v    $(SRC_PATH)
 vpath %.texi $(SRC_PATH)
-vpath %.cu   $(SRC_PATH)
-vpath %.ptx  $(SRC_PATH)
-vpath %.metal $(SRC_PATH)
 vpath %/fate_config.sh.template $(SRC_PATH)
 
+AVPROGS-$(CONFIG_FFMPEG)   += ffmpeg
+AVPROGS-$(CONFIG_FFPLAY)   += ffplay
+AVPROGS-$(CONFIG_FFPROBE)  += ffprobe
+AVPROGS-$(CONFIG_FFSERVER) += ffserver
+
+AVPROGS    := $(AVPROGS-yes:%=%$(PROGSSUF)$(EXESUF))
+INSTPROGS   = $(AVPROGS-yes:%=%$(PROGSSUF)$(EXESUF))
+PROGS      += $(AVPROGS)
+
+AVBASENAMES  = ffmpeg ffplay ffprobe ffserver
+ALLAVPROGS   = $(AVBASENAMES:%=%$(PROGSSUF)$(EXESUF))
+ALLAVPROGS_G = $(AVBASENAMES:%=%$(PROGSSUF)_g$(EXESUF))
+
+$(foreach prog,$(AVBASENAMES),$(eval OBJS-$(prog) += cmdutils.o))
+$(foreach prog,$(AVBASENAMES),$(eval OBJS-$(prog)-$(CONFIG_OPENCL) += cmdutils_opencl.o))
+
+OBJS-ffmpeg                   += ffmpeg_opt.o ffmpeg_filter.o
+OBJS-ffmpeg-$(CONFIG_VIDEOTOOLBOX) += ffmpeg_videotoolbox.o
+OBJS-ffmpeg-$(CONFIG_LIBMFX)  += ffmpeg_qsv.o
+OBJS-ffmpeg-$(CONFIG_VAAPI)   += ffmpeg_vaapi.o
+ifndef CONFIG_VIDEOTOOLBOX
+OBJS-ffmpeg-$(CONFIG_VDA)     += ffmpeg_videotoolbox.o
+endif
+OBJS-ffmpeg-$(CONFIG_CUVID)   += ffmpeg_cuvid.o
+OBJS-ffmpeg-$(HAVE_DXVA2_LIB) += ffmpeg_dxva2.o
+OBJS-ffmpeg-$(HAVE_VDPAU_X11) += ffmpeg_vdpau.o
+OBJS-ffserver                 += ffserver_config.o
+
 TESTTOOLS   = audiogen videogen rotozoom tiny_psnr tiny_ssim base64 audiomatch
 HOSTPROGS  := $(TESTTOOLS:%=tests/%) doc/print_options
-
-ALLFFLIBS = avcodec avdevice avfilter avformat avutil postproc swscale swresample
+TOOLS       = qt-faststart trasher uncoded_frame
+TOOLS-$(CONFIG_ZLIB) += cws2fws
 
 # $(FFLIBS-yes) needs to be in linking order
 FFLIBS-$(CONFIG_AVDEVICE)   += avdevice
 FFLIBS-$(CONFIG_AVFILTER)   += avfilter
 FFLIBS-$(CONFIG_AVFORMAT)   += avformat
 FFLIBS-$(CONFIG_AVCODEC)    += avcodec
+FFLIBS-$(CONFIG_AVRESAMPLE) += avresample
 FFLIBS-$(CONFIG_POSTPROC)   += postproc
 FFLIBS-$(CONFIG_SWRESAMPLE) += swresample
 FFLIBS-$(CONFIG_SWSCALE)    += swscale
@@ -33,70 +59,43 @@ FFLIBS-$(CONFIG_SWSCALE)    += swscale
 FFLIBS := avutil
 
 DATA_FILES := $(wildcard $(SRC_PATH)/presets/*.ffpreset) $(SRC_PATH)/doc/ffprobe.xsd
+EXAMPLES_FILES := $(wildcard $(SRC_PATH)/doc/examples/*.c) $(SRC_PATH)/doc/examples/Makefile $(SRC_PATH)/doc/examples/README
 
-SKIPHEADERS = compat/w32pthreads.h
+SKIPHEADERS = cmdutils_common_opts.h                                    \
+              compat/w32pthreads.h
 
-# first so "all" becomes default target
-all: all-yes
-
-include $(SRC_PATH)/tools/Makefile
-include $(SRC_PATH)/ffbuild/common.mak
+include $(SRC_PATH)/common.mak
 
 FF_EXTRALIBS := $(FFEXTRALIBS)
 FF_DEP_LIBS  := $(DEP_LIBS)
 FF_STATIC_DEP_LIBS := $(STATIC_DEP_LIBS)
 
-$(TOOLS): %$(EXESUF): %.o
-	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $(filter-out $(FF_DEP_LIBS), $^) $(EXTRALIBS-$(*F)) $(EXTRALIBS) $(ELIBS)
+all: $(AVPROGS)
 
-target_dec_%_fuzzer$(EXESUF): target_dec_%_fuzzer.o $(FF_DEP_LIBS)
-	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
+$(TOOLS): %$(EXESUF): %.o $(EXEOBJS)
+	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS)
 
-tools/target_bsf_%_fuzzer$(EXESUF): tools/target_bsf_%_fuzzer.o $(FF_DEP_LIBS)
-	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
-
-target_dem_%_fuzzer$(EXESUF): target_dem_%_fuzzer.o $(FF_DEP_LIBS)
-	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
-
-tools/target_dem_fuzzer$(EXESUF): tools/target_dem_fuzzer.o $(FF_DEP_LIBS)
-	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
-
-tools/target_io_dem_fuzzer$(EXESUF): tools/target_io_dem_fuzzer.o $(FF_DEP_LIBS)
-	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
-
-
-tools/enum_options$(EXESUF): ELIBS = $(FF_EXTRALIBS)
-tools/enum_options$(EXESUF): $(FF_DEP_LIBS)
-tools/enc_recon_frame_test$(EXESUF): $(FF_DEP_LIBS)
-tools/enc_recon_frame_test$(EXESUF): ELIBS = $(FF_EXTRALIBS)
-tools/scale_slice_test$(EXESUF): $(FF_DEP_LIBS)
-tools/scale_slice_test$(EXESUF): ELIBS = $(FF_EXTRALIBS)
-tools/sofa2wavs$(EXESUF): ELIBS = $(FF_EXTRALIBS)
+tools/cws2fws$(EXESUF): ELIBS = $(ZLIB)
 tools/uncoded_frame$(EXESUF): $(FF_DEP_LIBS)
 tools/uncoded_frame$(EXESUF): ELIBS = $(FF_EXTRALIBS)
-tools/target_dec_%_fuzzer$(EXESUF): $(FF_DEP_LIBS)
-tools/target_dem_%_fuzzer$(EXESUF): $(FF_DEP_LIBS)
 
 CONFIGURABLE_COMPONENTS =                                           \
     $(wildcard $(FFLIBS:%=$(SRC_PATH)/lib%/all*.c))                 \
     $(SRC_PATH)/libavcodec/bitstream_filters.c                      \
-    $(SRC_PATH)/libavcodec/hwaccels.h                               \
-    $(SRC_PATH)/libavcodec/parsers.c                                \
     $(SRC_PATH)/libavformat/protocols.c                             \
 
-config_components.h: ffbuild/.config
-ffbuild/.config: $(CONFIGURABLE_COMPONENTS)
+config.h: .config
+.config: $(CONFIGURABLE_COMPONENTS)
 	@-tput bold 2>/dev/null
-	@-printf '\nWARNING: $(?) newer than config_components.h, rerun configure\n\n'
+	@-printf '\nWARNING: $(?F) newer than config.h, rerun configure\n\n'
 	@-tput sgr0 2>/dev/null
 
-SUBDIR_VARS := CLEANFILES FFLIBS HOSTPROGS TESTPROGS TOOLS               \
+SUBDIR_VARS := CLEANFILES EXAMPLES FFLIBS HOSTPROGS TESTPROGS TOOLS      \
                HEADERS ARCH_HEADERS BUILT_HEADERS SKIPHEADERS            \
                ARMV5TE-OBJS ARMV6-OBJS ARMV8-OBJS VFP-OBJS NEON-OBJS     \
-               ALTIVEC-OBJS VSX-OBJS RVV-OBJS MMX-OBJS X86ASM-OBJS       \
+               ALTIVEC-OBJS VSX-OBJS MMX-OBJS YASM-OBJS                  \
                MIPSFPU-OBJS MIPSDSPR2-OBJS MIPSDSP-OBJS MSA-OBJS         \
-               MMI-OBJS LSX-OBJS LASX-OBJS OBJS SLIBOBJS SHLIBOBJS       \
-               STLIBOBJS HOSTOBJS TESTOBJS
+               MMI-OBJS OBJS SLIBOBJS HOSTOBJS TESTOBJS
 
 define RESET
 $(1) :=
@@ -109,33 +108,41 @@ SUBDIR := $(1)/
 include $(SRC_PATH)/$(1)/Makefile
 -include $(SRC_PATH)/$(1)/$(ARCH)/Makefile
 -include $(SRC_PATH)/$(1)/$(INTRINSICS)/Makefile
-include $(SRC_PATH)/ffbuild/library.mak
+include $(SRC_PATH)/library.mak
 endef
 
 $(foreach D,$(FFLIBS),$(eval $(call DOSUBDIR,lib$(D))))
 
-include $(SRC_PATH)/fftools/Makefile
 include $(SRC_PATH)/doc/Makefile
-include $(SRC_PATH)/doc/examples/Makefile
 
-$(ALLFFLIBS:%=lib%/version.o): libavutil/ffversion.h
+define DOPROG
+OBJS-$(1) += $(1).o $(EXEOBJS) $(OBJS-$(1)-yes)
+$(1)$(PROGSSUF)_g$(EXESUF): $$(OBJS-$(1))
+$$(OBJS-$(1)): CFLAGS  += $(CFLAGS-$(1))
+$(1)$(PROGSSUF)_g$(EXESUF): LDFLAGS += $(LDFLAGS-$(1))
+$(1)$(PROGSSUF)_g$(EXESUF): FF_EXTRALIBS += $(LIBS-$(1))
+-include $$(OBJS-$(1):.o=.d)
+endef
+
+$(foreach P,$(PROGS),$(eval $(call DOPROG,$(P:$(PROGSSUF)$(EXESUF)=))))
+
+ffprobe.o cmdutils.o libavcodec/utils.o libavformat/utils.o libavdevice/avdevice.o libavfilter/avfilter.o libavutil/utils.o libpostproc/postprocess.o libswresample/swresample.o libswscale/utils.o : libavutil/ffversion.h
 
 $(PROGS): %$(PROGSSUF)$(EXESUF): %$(PROGSSUF)_g$(EXESUF)
-ifeq ($(STRIPTYPE),direct)
-	$(STRIP) -o $@ $<
-else
-	$(RM) $@
 	$(CP) $< $@
 	$(STRIP) $@
-endif
 
-%$(PROGSSUF)_g$(EXESUF): $(FF_DEP_LIBS)
+%$(PROGSSUF)_g$(EXESUF): %.o $(FF_DEP_LIBS)
 	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $(OBJS-$*) $(FF_EXTRALIBS)
 
-VERSION_SH  = $(SRC_PATH)/ffbuild/version.sh
+OBJDIRS += tools
+
+-include $(wildcard tools/*.d)
+
+VERSION_SH  = $(SRC_PATH)/version.sh
 GIT_LOG     = $(SRC_PATH)/.git/logs/HEAD
 
-.version: $(wildcard $(GIT_LOG)) $(VERSION_SH) ffbuild/config.mak
+.version: $(wildcard $(GIT_LOG)) $(VERSION_SH) config.mak
 .version: M=@
 
 libavutil/ffversion.h .version:
@@ -145,33 +152,47 @@ libavutil/ffversion.h .version:
 # force version.sh to run whenever version might have changed
 -include .version
 
+ifdef AVPROGS
+install: install-progs install-data
+endif
+
 install: install-libs install-headers
 
 install-libs: install-libs-yes
 
-install-data: $(DATA_FILES)
-	$(Q)mkdir -p "$(DATADIR)"
-	$(INSTALL) -m 644 $(DATA_FILES) "$(DATADIR)"
+install-progs-yes:
+install-progs-$(CONFIG_SHARED): install-libs
 
-uninstall: uninstall-data uninstall-headers uninstall-libs uninstall-pkgconfig
+install-progs: install-progs-yes $(AVPROGS)
+	$(Q)mkdir -p "$(BINDIR)"
+	$(INSTALL) -c -m 755 $(INSTPROGS) "$(BINDIR)"
+
+install-data: $(DATA_FILES) $(EXAMPLES_FILES)
+	$(Q)mkdir -p "$(DATADIR)/examples"
+	$(INSTALL) -m 644 $(DATA_FILES) "$(DATADIR)"
+	$(INSTALL) -m 644 $(EXAMPLES_FILES) "$(DATADIR)/examples"
+
+uninstall: uninstall-libs uninstall-headers uninstall-progs uninstall-data
+
+uninstall-progs:
+	$(RM) $(addprefix "$(BINDIR)/", $(ALLAVPROGS))
 
 uninstall-data:
 	$(RM) -r "$(DATADIR)"
 
 clean::
+	$(RM) $(ALLAVPROGS) $(ALLAVPROGS_G)
 	$(RM) $(CLEANSUFFIXES)
-	$(RM) $(addprefix compat/,$(CLEANSUFFIXES)) $(addprefix compat/*/,$(CLEANSUFFIXES)) $(addprefix compat/*/*/,$(CLEANSUFFIXES))
+	$(RM) $(CLEANSUFFIXES:%=tools/%)
+	$(RM) $(CLEANSUFFIXES:%=compat/msvcrt/%)
+	$(RM) $(CLEANSUFFIXES:%=compat/atomics/pthread/%)
+	$(RM) $(CLEANSUFFIXES:%=compat/%)
 	$(RM) -r coverage-html
 	$(RM) -rf coverage.info coverage.info.in lcov
 
-distclean:: clean
-	$(RM) .version config.asm config.h config_components.h mapfile  \
-		ffbuild/.config ffbuild/config.* libavutil/avconfig.h \
-		version.h libavutil/ffversion.h libavcodec/codec_names.h \
-		libavcodec/bsf_list.c libavformat/protocol_list.c \
-		libavcodec/codec_list.c libavcodec/parser_list.c \
-		libavfilter/filter_list.c libavdevice/indev_list.c libavdevice/outdev_list.c \
-		libavformat/muxer_list.c libavformat/demuxer_list.c
+distclean::
+	$(RM) $(DISTCLEANSUFFIXES)
+	$(RM) config.* .config libavutil/avconfig.h .version mapfile avversion.h version.h libavutil/ffversion.h libavcodec/codec_names.h libavcodec/bsf_list.c libavformat/protocol_list.c
 ifeq ($(SRC_LINK),src)
 	$(RM) src
 endif
@@ -180,12 +201,11 @@ endif
 config:
 	$(SRC_PATH)/configure $(value FFMPEG_CONFIGURATION)
 
-build: all alltools examples testprogs
 check: all alltools examples testprogs fate
 
 include $(SRC_PATH)/tests/Makefile
 
-$(sort $(OUTDIRS)):
+$(sort $(OBJDIRS)):
 	$(Q)mkdir -p $@
 
 # Dummy rule to stop make trying to rebuild removed or renamed headers
@@ -196,5 +216,5 @@ $(sort $(OUTDIRS)):
 # so this saves some time on slow systems.
 .SUFFIXES:
 
-.PHONY: all all-yes alltools build check config testprogs
-.PHONY: *clean install* uninstall*
+.PHONY: all all-yes alltools check *clean config install*
+.PHONY: testprogs uninstall*

README.md

@@ -9,7 +9,7 @@ such as audio, video, subtitles and related metadata.
 * `libavcodec` provides implementation of a wider range of codecs.
 * `libavformat` implements streaming protocols, container formats and basic I/O access.
 * `libavutil` includes hashers, decompressors and miscellaneous utility functions.
-* `libavfilter` provides means to alter decoded audio and video through a directed graph of connected filters.
+* `libavfilter` provides a mean to alter decoded Audio and Video through chain of filters.
 * `libavdevice` provides an abstraction to access capture and playback devices.
 * `libswresample` implements audio mixing and resampling routines.
 * `libswscale` implements color conversion and scaling routines.
@@ -21,6 +21,8 @@ such as audio, video, subtitles and related metadata.
 * [ffplay](https://ffmpeg.org/ffplay.html) is a minimalistic multimedia player.
 * [ffprobe](https://ffmpeg.org/ffprobe.html) is a simple analysis tool to inspect
   multimedia content.
+* [ffserver](https://ffmpeg.org/ffserver.html) is a multimedia streaming server
+  for live broadcasts.
 * Additional small tools such as `aviocat`, `ismindex` and `qt-faststart`.
 
 ## Documentation

RELEASE

@@ -1 +1 @@
-6.1
+3.3.9

RELEASE_NOTES

@@ -1,15 +1,15 @@
 
-            ┌──────────────────────────────────────────┐
-            │ RELEASE NOTES for FFmpeg 6.1 "Heaviside" │
-            └──────────────────────────────────────────┘
+              ┌────────────────────────────────────────┐
+              │ RELEASE NOTES for FFmpeg 3.3 "Hilbert" │
+              └────────────────────────────────────────┘
 
-   The FFmpeg Project proudly presents FFmpeg 6.1 "Heaviside", about 8
-   months after the release of FFmpeg 6.0.
+   The FFmpeg Project proudly presents FFmpeg 3.3 "Hilbert", about 5
+   months after the release of FFmpeg 3.2.
 
    A complete Changelog is available at the root of the project, and the
-   complete Git history on https://git.ffmpeg.org/gitweb/ffmpeg.git
+   complete Git history on http://source.ffmpeg.org.
 
    We hope you will like this release as much as we enjoyed working on it, and
    as usual, if you have any questions about it, or any FFmpeg related topic,
-   feel free to join us on the #ffmpeg IRC channel (on irc.libera.chat) or ask
+   feel free to join us on the #ffmpeg IRC channel (on irc.freenode.net) or ask
    on the mailing-lists.

arch.mak

@@ -8,14 +8,10 @@ OBJS-$(HAVE_MIPSFPU)   += $(MIPSFPU-OBJS)    $(MIPSFPU-OBJS-yes)
 OBJS-$(HAVE_MIPSDSP)   += $(MIPSDSP-OBJS)    $(MIPSDSP-OBJS-yes)
 OBJS-$(HAVE_MIPSDSPR2) += $(MIPSDSPR2-OBJS)  $(MIPSDSPR2-OBJS-yes)
 OBJS-$(HAVE_MSA)       += $(MSA-OBJS)        $(MSA-OBJS-yes)
-OBJS-$(HAVE_MMI)       += $(MMI-OBJS)        $(MMI-OBJS-yes)
-OBJS-$(HAVE_LSX)       += $(LSX-OBJS)        $(LSX-OBJS-yes)
-OBJS-$(HAVE_LASX)      += $(LASX-OBJS)       $(LASX-OBJS-yes)
+OBJS-$(HAVE_MMI)   += $(MMI-OBJS)   $(MMI-OBJS-yes)
 
 OBJS-$(HAVE_ALTIVEC) += $(ALTIVEC-OBJS) $(ALTIVEC-OBJS-yes)
 OBJS-$(HAVE_VSX)     += $(VSX-OBJS) $(VSX-OBJS-yes)
 
-OBJS-$(HAVE_RVV)     += $(RVV-OBJS)     $(RVV-OBJS-yes)
-
 OBJS-$(HAVE_MMX)     += $(MMX-OBJS)     $(MMX-OBJS-yes)
-OBJS-$(HAVE_X86ASM)  += $(X86ASM-OBJS)  $(X86ASM-OBJS-yes)
+OBJS-$(HAVE_YASM)    += $(YASM-OBJS)    $(YASM-OBJS-yes)

cmdutils.h

@@ -19,8 +19,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef FFTOOLS_CMDUTILS_H
-#define FFTOOLS_CMDUTILS_H
+#ifndef CMDUTILS_H
+#define CMDUTILS_H
 
 #include <stdint.h>
 
@@ -44,16 +44,33 @@ extern const char program_name[];
  */
 extern const int program_birth_year;
 
+extern AVCodecContext *avcodec_opts[AVMEDIA_TYPE_NB];
+extern AVFormatContext *avformat_opts;
 extern AVDictionary *sws_dict;
 extern AVDictionary *swr_opts;
-extern AVDictionary *format_opts, *codec_opts;
+extern AVDictionary *format_opts, *codec_opts, *resample_opts;
 extern int hide_banner;
 
+/**
+ * Register a program-specific cleanup routine.
+ */
+void register_exit(void (*cb)(int ret));
+
+/**
+ * Wraps exit with a program-specific cleanup routine.
+ */
+void exit_program(int ret) av_noreturn;
+
 /**
  * Initialize dynamic library loading
  */
 void init_dynload(void);
 
+/**
+ * Initialize the cmdutils option system, in particular
+ * allocate the *_opts contexts.
+ */
+void init_opts(void);
 /**
  * Uninitialize the cmdutils option system, in particular
  * free the *_opts contexts and their contents.
@@ -66,12 +83,34 @@ void uninit_opts(void);
  */
 void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
 
+/**
+ * Override the cpuflags.
+ */
+int opt_cpuflags(void *optctx, const char *opt, const char *arg);
+
 /**
  * Fallback for options that are not explicitly handled, these will be
  * parsed through AVOptions.
  */
 int opt_default(void *optctx, const char *opt, const char *arg);
 
+/**
+ * Set the libav* libraries log level.
+ */
+int opt_loglevel(void *optctx, const char *opt, const char *arg);
+
+int opt_report(const char *opt);
+
+int opt_max_alloc(void *optctx, const char *opt, const char *arg);
+
+int opt_codec_debug(void *optctx, const char *opt, const char *arg);
+
+#if CONFIG_OPENCL
+int opt_opencl(void *optctx, const char *opt, const char *arg);
+
+int opt_opencl_bench(void *optctx, const char *opt, const char *arg);
+#endif
+
 /**
  * Limit the execution time.
  */
@@ -79,6 +118,8 @@ int opt_timelimit(void *optctx, const char *opt, const char *arg);
 
 /**
  * Parse a string and return its corresponding value as a double.
+ * Exit from the application if the string cannot be correctly
+ * parsed or the corresponding value is invalid.
  *
  * @param context the context of the value to be set (e.g. the
  * corresponding command line option name)
@@ -88,8 +129,25 @@ int opt_timelimit(void *optctx, const char *opt, const char *arg);
  * @param min the minimum valid accepted value
  * @param max the maximum valid accepted value
  */
-int parse_number(const char *context, const char *numstr, int type,
-                 double min, double max, double *dst);
+double parse_number_or_die(const char *context, const char *numstr, int type,
+                           double min, double max);
+
+/**
+ * Parse a string specifying a time and return its corresponding
+ * value as a number of microseconds. Exit from the application if
+ * the string cannot be correctly parsed.
+ *
+ * @param context the context of the value to be set (e.g. the
+ * corresponding command line option name)
+ * @param timestr the string to be parsed
+ * @param is_duration a flag which tells how to interpret timestr, if
+ * not zero timestr is interpreted as a duration, otherwise as a
+ * date
+ *
+ * @see av_parse_time()
+ */
+int64_t parse_time_or_die(const char *context, const char *timestr,
+                          int is_duration);
 
 typedef struct SpecifierOpt {
     char *specifier;    /**< stream/chapter/program/... specifier */
@@ -97,7 +155,6 @@ typedef struct SpecifierOpt {
         uint8_t *str;
         int        i;
         int64_t  i64;
-        uint64_t ui64;
         float      f;
         double   dbl;
     } u;
@@ -161,6 +218,11 @@ void show_help_children(const AVClass *class, int flags);
  */
 void show_help_default(const char *opt, const char *arg);
 
+/**
+ * Generic -h handler common to all fftools.
+ */
+int show_help(void *optctx, const char *opt, const char *arg);
+
 /**
  * Parse the command line arguments.
  *
@@ -173,8 +235,8 @@ void show_help_default(const char *opt, const char *arg);
  * argument without a leading option name flag. NULL if such arguments do
  * not have to be processed.
  */
-int parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
-                  int (* parse_arg_function)(void *optctx, const char*));
+void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
+                   void (* parse_arg_function)(void *optctx, const char*));
 
 /**
  * Parse one given option.
@@ -219,6 +281,7 @@ typedef struct OptionGroup {
 
     AVDictionary *codec_opts;
     AVDictionary *format_opts;
+    AVDictionary *resample_opts;
     AVDictionary *sws_dict;
     AVDictionary *swr_opts;
 } OptionGroup;
@@ -312,12 +375,10 @@ int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
  * @param st A stream from s for which the options should be filtered.
  * @param codec The particular codec for which the options should be filtered.
  *              If null, the default one is looked up according to the codec id.
- * @param dst a pointer to the created dictionary
- * @return a non-negative number on success, a negative error code on failure
+ * @return a pointer to the created dictionary
  */
-int filter_codec_opts(const AVDictionary *opts, enum AVCodecID codec_id,
-                      AVFormatContext *s, AVStream *st, const AVCodec *codec,
-                      AVDictionary **dst);
+AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
+                                AVFormatContext *s, AVStream *st, AVCodec *codec);
 
 /**
  * Setup AVCodecContext options for avformat_find_stream_info().
@@ -326,10 +387,12 @@ int filter_codec_opts(const AVDictionary *opts, enum AVCodecID codec_id,
  * contained in s.
  * Each dictionary will contain the options from codec_opts which can
  * be applied to the corresponding stream codec context.
+ *
+ * @return pointer to the created array of dictionaries, NULL if it
+ * cannot be created
  */
-int setup_find_stream_info_opts(AVFormatContext *s,
-                                AVDictionary *codec_opts,
-                                AVDictionary ***dst);
+AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
+                                           AVDictionary *codec_opts);
 
 /**
  * Print an error message to stderr, indicating filename and a human
@@ -349,6 +412,136 @@ void print_error(const char *filename, int err);
  */
 void show_banner(int argc, char **argv, const OptionDef *options);
 
+/**
+ * Print the version of the program to stdout. The version message
+ * depends on the current versions of the repository and of the libav*
+ * libraries.
+ * This option processing function does not utilize the arguments.
+ */
+int show_version(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print the build configuration of the program to stdout. The contents
+ * depend on the definition of FFMPEG_CONFIGURATION.
+ * This option processing function does not utilize the arguments.
+ */
+int show_buildconf(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print the license of the program to stdout. The license depends on
+ * the license of the libraries compiled into the program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_license(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the formats supported by the
+ * program (including devices).
+ * This option processing function does not utilize the arguments.
+ */
+int show_formats(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the muxers supported by the
+ * program (including devices).
+ * This option processing function does not utilize the arguments.
+ */
+int show_muxers(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the demuxer supported by the
+ * program (including devices).
+ * This option processing function does not utilize the arguments.
+ */
+int show_demuxers(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the devices supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_devices(void *optctx, const char *opt, const char *arg);
+
+#if CONFIG_AVDEVICE
+/**
+ * Print a listing containing autodetected sinks of the output device.
+ * Device name with options may be passed as an argument to limit results.
+ */
+int show_sinks(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing autodetected sources of the input device.
+ * Device name with options may be passed as an argument to limit results.
+ */
+int show_sources(void *optctx, const char *opt, const char *arg);
+#endif
+
+/**
+ * Print a listing containing all the codecs supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_codecs(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the decoders supported by the
+ * program.
+ */
+int show_decoders(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the encoders supported by the
+ * program.
+ */
+int show_encoders(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the filters supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_filters(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the bit stream filters supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_bsfs(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the protocols supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_protocols(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the pixel formats supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_pix_fmts(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the standard channel layouts supported by
+ * the program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_layouts(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the sample formats supported by the
+ * program.
+ */
+int show_sample_fmts(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the color names and values recognized
+ * by the program.
+ */
+int show_colors(void *optctx, const char *opt, const char *arg);
+
 /**
  * Return a positive value if a line read from standard input
  * starts with [yY], otherwise return 0.
@@ -378,38 +571,24 @@ FILE *get_preset_file(char *filename, size_t filename_size,
 
 /**
  * Realloc array to hold new_size elements of elem_size.
+ * Calls exit() on failure.
  *
- * @param array pointer to the array to reallocate, will be updated
- *              with a new pointer on success
+ * @param array array to reallocate
  * @param elem_size size in bytes of each element
  * @param size new element count will be written here
  * @param new_size number of elements to place in reallocated array
- * @return a non-negative number on success, a negative error code on failure
+ * @return reallocated array
  */
-int grow_array(void **array, int elem_size, int *size, int new_size);
+void *grow_array(void *array, int elem_size, int *size, int new_size);
 
-/**
- * Atomically add a new element to an array of pointers, i.e. allocate
- * a new entry, reallocate the array of pointers and make the new last
- * member of this array point to the newly allocated buffer.
- *
- * @param array     array of pointers to reallocate
- * @param elem_size size of the new element to allocate
- * @param nb_elems  pointer to the number of elements of the array array;
- *                  *nb_elems will be incremented by one by this function.
- * @return pointer to the newly allocated entry or NULL on failure
- */
-void *allocate_array_elem(void *array, size_t elem_size, int *nb_elems);
+#define media_type_string av_get_media_type_string
 
 #define GROW_ARRAY(array, nb_elems)\
-    grow_array((void**)&array, sizeof(*array), &nb_elems, nb_elems + 1)
+    array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
 
 #define GET_PIX_FMT_NAME(pix_fmt)\
     const char *name = av_get_pix_fmt_name(pix_fmt);
 
-#define GET_CODEC_NAME(id)\
-    const char *name = avcodec_descriptor_get(id)->name;
-
 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
     const char *name = av_get_sample_fmt_name(sample_fmt)
 
@@ -417,6 +596,14 @@ void *allocate_array_elem(void *array, size_t elem_size, int *nb_elems);
     char name[16];\
     snprintf(name, sizeof(name), "%d", rate);
 
-double get_rotation(const int32_t *displaymatrix);
+#define GET_CH_LAYOUT_NAME(ch_layout)\
+    char name[16];\
+    snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
 
-#endif /* FFTOOLS_CMDUTILS_H */
+#define GET_CH_LAYOUT_DESC(ch_layout)\
+    char name[128];\
+    av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);
+
+double get_rotation(AVStream *st);
+
+#endif /* CMDUTILS_H */

cmdutils_common_opts.h

@@ -0,0 +1,37 @@
+    { "L"          , OPT_EXIT, {.func_arg = show_license},      "show license" },
+    { "h"          , OPT_EXIT, {.func_arg = show_help},         "show help", "topic" },
+    { "?"          , OPT_EXIT, {.func_arg = show_help},         "show help", "topic" },
+    { "help"       , OPT_EXIT, {.func_arg = show_help},         "show help", "topic" },
+    { "-help"      , OPT_EXIT, {.func_arg = show_help},         "show help", "topic" },
+    { "version"    , OPT_EXIT, {.func_arg = show_version},      "show version" },
+    { "buildconf"  , OPT_EXIT, {.func_arg = show_buildconf},    "show build configuration" },
+    { "formats"    , OPT_EXIT, {.func_arg = show_formats  },    "show available formats" },
+    { "muxers"     , OPT_EXIT, {.func_arg = show_muxers   },    "show available muxers" },
+    { "demuxers"   , OPT_EXIT, {.func_arg = show_demuxers },    "show available demuxers" },
+    { "devices"    , OPT_EXIT, {.func_arg = show_devices  },    "show available devices" },
+    { "codecs"     , OPT_EXIT, {.func_arg = show_codecs   },    "show available codecs" },
+    { "decoders"   , OPT_EXIT, {.func_arg = show_decoders },    "show available decoders" },
+    { "encoders"   , OPT_EXIT, {.func_arg = show_encoders },    "show available encoders" },
+    { "bsfs"       , OPT_EXIT, {.func_arg = show_bsfs     },    "show available bit stream filters" },
+    { "protocols"  , OPT_EXIT, {.func_arg = show_protocols},    "show available protocols" },
+    { "filters"    , OPT_EXIT, {.func_arg = show_filters  },    "show available filters" },
+    { "pix_fmts"   , OPT_EXIT, {.func_arg = show_pix_fmts },    "show available pixel formats" },
+    { "layouts"    , OPT_EXIT, {.func_arg = show_layouts  },    "show standard channel layouts" },
+    { "sample_fmts", OPT_EXIT, {.func_arg = show_sample_fmts }, "show available audio sample formats" },
+    { "colors"     , OPT_EXIT, {.func_arg = show_colors },      "show available color names" },
+    { "loglevel"   , HAS_ARG,  {.func_arg = opt_loglevel},      "set logging level", "loglevel" },
+    { "v",           HAS_ARG,  {.func_arg = opt_loglevel},      "set logging level", "loglevel" },
+    { "report"     , 0,        {(void*)opt_report}, "generate a report" },
+    { "max_alloc"  , HAS_ARG,  {.func_arg = opt_max_alloc},     "set maximum size of a single allocated block", "bytes" },
+    { "cpuflags"   , HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags }, "force specific cpu flags", "flags" },
+    { "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner},     "do not show program banner", "hide_banner" },
+#if CONFIG_OPENCL
+    { "opencl_bench", OPT_EXIT, {.func_arg = opt_opencl_bench}, "run benchmark on all OpenCL devices and show results" },
+    { "opencl_options", HAS_ARG, {.func_arg = opt_opencl},      "set OpenCL environment options" },
+#endif
+#if CONFIG_AVDEVICE
+    { "sources"    , OPT_EXIT | HAS_ARG, { .func_arg = show_sources },
+      "list sources of the input device", "device" },
+    { "sinks"      , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks },
+      "list sinks of the output device", "device" },
+#endif

cmdutils_opencl.c

@@ -0,0 +1,283 @@
+/*
+ * Copyright (C) 2013 Lenny Wang
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/opt.h"
+#include "libavutil/time.h"
+#include "libavutil/log.h"
+#include "libavutil/opencl.h"
+#include "libavutil/avstring.h"
+#include "cmdutils.h"
+
+typedef struct {
+    int platform_idx;
+    int device_idx;
+    char device_name[64];
+    int64_t runtime;
+} OpenCLDeviceBenchmark;
+
+const char *ocl_bench_source = AV_OPENCL_KERNEL(
+inline unsigned char clip_uint8(int a)
+{
+    if (a & (~0xFF))
+        return (-a)>>31;
+    else
+        return a;
+}
+
+kernel void unsharp_bench(
+                    global unsigned char *src,
+                    global unsigned char *dst,
+                    global int *mask,
+                    int width,
+                    int height)
+{
+    int i, j, local_idx, lc_idx, sum = 0;
+    int2 thread_idx, block_idx, global_idx, lm_idx;
+    thread_idx.x = get_local_id(0);
+    thread_idx.y = get_local_id(1);
+    block_idx.x = get_group_id(0);
+    block_idx.y = get_group_id(1);
+    global_idx.x = get_global_id(0);
+    global_idx.y = get_global_id(1);
+    local uchar data[32][32];
+    local int lc[128];
+
+    for (i = 0; i <= 1; i++) {
+        lm_idx.y = -8 + (block_idx.y + i) * 16 + thread_idx.y;
+        lm_idx.y = lm_idx.y < 0 ? 0 : lm_idx.y;
+        lm_idx.y = lm_idx.y >= height ? height - 1: lm_idx.y;
+        for (j = 0; j <= 1; j++) {
+            lm_idx.x = -8 + (block_idx.x + j) * 16 + thread_idx.x;
+            lm_idx.x = lm_idx.x < 0 ? 0 : lm_idx.x;
+            lm_idx.x = lm_idx.x >= width ? width - 1: lm_idx.x;
+            data[i*16 + thread_idx.y][j*16 + thread_idx.x] = src[lm_idx.y*width + lm_idx.x];
+        }
+    }
+    local_idx = thread_idx.y*16 + thread_idx.x;
+    if (local_idx < 128)
+        lc[local_idx] = mask[local_idx];
+    barrier(CLK_LOCAL_MEM_FENCE);
+
+    \n#pragma unroll\n
+    for (i = -4; i <= 4; i++) {
+        lm_idx.y = 8 + i + thread_idx.y;
+        \n#pragma unroll\n
+        for (j = -4; j <= 4; j++) {
+            lm_idx.x = 8 + j + thread_idx.x;
+            lc_idx = (i + 4)*8 + j + 4;
+            sum += (int)data[lm_idx.y][lm_idx.x] * lc[lc_idx];
+        }
+    }
+    int temp = (int)data[thread_idx.y + 8][thread_idx.x + 8];
+    int res = temp + (((temp - (int)((sum + 1<<15) >> 16))) >> 16);
+    if (global_idx.x < width && global_idx.y < height)
+        dst[global_idx.x + global_idx.y*width] = clip_uint8(res);
+}
+);
+
+#define OCLCHECK(method, ... )                                                 \
+do {                                                                           \
+    status = method(__VA_ARGS__);                                              \
+    if (status != CL_SUCCESS) {                                                \
+        av_log(NULL, AV_LOG_ERROR, # method " error '%s'\n",                   \
+               av_opencl_errstr(status));                                      \
+        ret = AVERROR_EXTERNAL;                                                \
+        goto end;                                                              \
+    }                                                                          \
+} while (0)
+
+#define CREATEBUF(out, flags, size)                                            \
+do {                                                                           \
+    out = clCreateBuffer(ext_opencl_env->context, flags, size, NULL, &status); \
+    if (status != CL_SUCCESS) {                                                \
+        av_log(NULL, AV_LOG_ERROR, "Could not create OpenCL buffer\n");        \
+        ret = AVERROR_EXTERNAL;                                                \
+        goto end;                                                              \
+    }                                                                          \
+} while (0)
+
+static void fill_rand_int(int *data, int n)
+{
+    int i;
+    srand(av_gettime());
+    for (i = 0; i < n; i++)
+        data[i] = rand();
+}
+
+#define OPENCL_NB_ITER 5
+static int64_t run_opencl_bench(AVOpenCLExternalEnv *ext_opencl_env)
+{
+    int i, arg = 0, width = 1920, height = 1088;
+    int64_t start, ret = 0;
+    cl_int status;
+    size_t kernel_len;
+    char *inbuf;
+    int *mask;
+    int buf_size = width * height * sizeof(char);
+    int mask_size = sizeof(uint32_t) * 128;
+
+    cl_mem cl_mask, cl_inbuf, cl_outbuf;
+    cl_kernel kernel = NULL;
+    cl_program program = NULL;
+    size_t local_work_size_2d[2] = {16, 16};
+    size_t global_work_size_2d[2] = {(size_t)width, (size_t)height};
+
+    if (!(inbuf = av_malloc(buf_size)) || !(mask = av_malloc(mask_size))) {
+        av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
+        ret = AVERROR(ENOMEM);
+        goto end;
+    }
+    fill_rand_int((int*)inbuf, buf_size/4);
+    fill_rand_int(mask, mask_size/4);
+
+    CREATEBUF(cl_mask, CL_MEM_READ_ONLY, mask_size);
+    CREATEBUF(cl_inbuf, CL_MEM_READ_ONLY, buf_size);
+    CREATEBUF(cl_outbuf, CL_MEM_READ_WRITE, buf_size);
+
+    kernel_len = strlen(ocl_bench_source);
+    program = clCreateProgramWithSource(ext_opencl_env->context, 1, &ocl_bench_source,
+                                        &kernel_len, &status);
+    if (status != CL_SUCCESS || !program) {
+        av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark program\n");
+        ret = AVERROR_EXTERNAL;
+        goto end;
+    }
+    status = clBuildProgram(program, 1, &(ext_opencl_env->device_id), NULL, NULL, NULL);
+    if (status != CL_SUCCESS) {
+        av_log(NULL, AV_LOG_ERROR, "OpenCL unable to build benchmark program\n");
+        ret = AVERROR_EXTERNAL;
+        goto end;
+    }
+    kernel = clCreateKernel(program, "unsharp_bench", &status);
+    if (status != CL_SUCCESS) {
+        av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark kernel\n");
+        ret = AVERROR_EXTERNAL;
+        goto end;
+    }
+
+    OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_inbuf, CL_TRUE, 0,
+             buf_size, inbuf, 0, NULL, NULL);
+    OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_mask, CL_TRUE, 0,
+             mask_size, mask, 0, NULL, NULL);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_inbuf);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_outbuf);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_mask);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &width);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &height);
+
+    start = av_gettime_relative();
+    for (i = 0; i < OPENCL_NB_ITER; i++)
+        OCLCHECK(clEnqueueNDRangeKernel, ext_opencl_env->command_queue, kernel, 2, NULL,
+                 global_work_size_2d, local_work_size_2d, 0, NULL, NULL);
+    clFinish(ext_opencl_env->command_queue);
+    ret = (av_gettime_relative() - start)/OPENCL_NB_ITER;
+end:
+    if (kernel)
+        clReleaseKernel(kernel);
+    if (program)
+        clReleaseProgram(program);
+    if (cl_inbuf)
+        clReleaseMemObject(cl_inbuf);
+    if (cl_outbuf)
+        clReleaseMemObject(cl_outbuf);
+    if (cl_mask)
+        clReleaseMemObject(cl_mask);
+    av_free(inbuf);
+    av_free(mask);
+    return ret;
+}
+
+static int compare_ocl_device_desc(const void *a, const void *b)
+{
+    const OpenCLDeviceBenchmark* va = (const OpenCLDeviceBenchmark*)a;
+    const OpenCLDeviceBenchmark* vb = (const OpenCLDeviceBenchmark*)b;
+    return FFDIFFSIGN(va->runtime , vb->runtime);
+}
+
+int opt_opencl_bench(void *optctx, const char *opt, const char *arg)
+{
+    int i, j, nb_devices = 0, count = 0, ret = 0;
+    int64_t score = 0;
+    AVOpenCLDeviceList *device_list;
+    AVOpenCLDeviceNode *device_node = NULL;
+    OpenCLDeviceBenchmark *devices = NULL;
+    cl_platform_id platform;
+
+    ret = av_opencl_get_device_list(&device_list);
+    if (ret < 0) {
+        return ret;
+    }
+    for (i = 0; i < device_list->platform_num; i++)
+        nb_devices += device_list->platform_node[i]->device_num;
+    if (!nb_devices) {
+        av_log(NULL, AV_LOG_ERROR, "No OpenCL device detected!\n");
+        av_opencl_free_device_list(&device_list);
+        return AVERROR(EINVAL);
+    }
+    if (!(devices = av_malloc_array(nb_devices, sizeof(OpenCLDeviceBenchmark)))) {
+        av_log(NULL, AV_LOG_ERROR, "Could not allocate buffer\n");
+        av_opencl_free_device_list(&device_list);
+        return AVERROR(ENOMEM);
+    }
+
+    for (i = 0; i < device_list->platform_num; i++) {
+        for (j = 0; j < device_list->platform_node[i]->device_num; j++) {
+            device_node = device_list->platform_node[i]->device_node[j];
+            platform = device_list->platform_node[i]->platform_id;
+            score = av_opencl_benchmark(device_node, platform, run_opencl_bench);
+            if (score > 0) {
+                devices[count].platform_idx = i;
+                devices[count].device_idx = j;
+                devices[count].runtime = score;
+                av_strlcpy(devices[count].device_name, device_node->device_name,
+                           sizeof(devices[count].device_name));
+                count++;
+            }
+        }
+    }
+    qsort(devices, count, sizeof(OpenCLDeviceBenchmark), compare_ocl_device_desc);
+    fprintf(stderr, "platform_idx\tdevice_idx\tdevice_name\truntime\n");
+    for (i = 0; i < count; i++)
+        fprintf(stdout, "%d\t%d\t%s\t%"PRId64"\n",
+                devices[i].platform_idx, devices[i].device_idx,
+                devices[i].device_name, devices[i].runtime);
+
+    av_opencl_free_device_list(&device_list);
+    av_free(devices);
+    return 0;
+}
+
+int opt_opencl(void *optctx, const char *opt, const char *arg)
+{
+    char *key, *value;
+    const char *opts = arg;
+    int ret = 0;
+    while (*opts) {
+        ret = av_opt_get_key_value(&opts, "=", ":", 0, &key, &value);
+        if (ret < 0)
+            return ret;
+        ret = av_opencl_set_option(key, value);
+        if (ret < 0)
+            return ret;
+        if (*opts)
+            opts++;
+    }
+    return ret;
+}

common.mak

@@ -2,24 +2,24 @@
 # common bits used by all libraries
 #
 
-DEFAULT_X86ASMD=.dbg
+# first so "all" becomes default target
+all: all-yes
+
+DEFAULT_YASMD=.dbg
 
 ifeq ($(DBG),1)
-X86ASMD=$(DEFAULT_X86ASMD)
+YASMD=$(DEFAULT_YASMD)
 else
-X86ASMD=
+YASMD=
 endif
 
 ifndef SUBDIR
 
-BIN2CEXE = ffbuild/bin2c$(HOSTEXESUF)
-BIN2C = $(BIN2CEXE)
-
 ifndef V
 Q      = @
 ECHO   = printf "$(1)\t%s\n" $(2)
-BRIEF  = CC CXX OBJCC HOSTCC HOSTLD AS X86ASM AR LD STRIP CP WINDRES NVCC BIN2C
-SILENT = DEPCC DEPHOSTCC DEPAS DEPX86ASM RANLIB RM
+BRIEF  = CC CXX OBJCC HOSTCC HOSTLD AS YASM AR LD STRIP CP WINDRES
+SILENT = DEPCC DEPHOSTCC DEPAS DEPYASM RANLIB RM
 
 MSG    = $@
 M      = @$(call ECHO,$(TAG),$@);
@@ -29,8 +29,7 @@ $(foreach VAR,$(SILENT),$(eval override $(VAR) = @$($(VAR))))
 $(eval INSTALL = @$(call ECHO,INSTALL,$$(^:$(SRC_DIR)/%=%)); $(INSTALL))
 endif
 
-# Prepend to a recursively expanded variable without making it simply expanded.
-PREPEND = $(eval $(1) = $(patsubst %,$$(%), $(2)) $(value $(1)))
+ALLFFLIBS = avcodec avdevice avfilter avformat avresample avutil postproc swscale swresample
 
 # NASM requires -I path terminated with /
 IFLAGS     := -I. -I$(SRC_LINK)/
@@ -40,42 +39,22 @@ CCFLAGS     = $(CPPFLAGS) $(CFLAGS)
 OBJCFLAGS  += $(EOBJCFLAGS)
 OBJCCFLAGS  = $(CPPFLAGS) $(CFLAGS) $(OBJCFLAGS)
 ASFLAGS    := $(CPPFLAGS) $(ASFLAGS)
-# Use PREPEND here so that later (target-dependent) additions to CPPFLAGS
-# end up in CXXFLAGS.
-$(call PREPEND,CXXFLAGS, CPPFLAGS CFLAGS)
-X86ASMFLAGS += $(IFLAGS:%=%/) -I$(<D)/ -Pconfig.asm
+CXXFLAGS   := $(CPPFLAGS) $(CFLAGS) $(CXXFLAGS)
+YASMFLAGS  += $(IFLAGS:%=%/) -Pconfig.asm
 
 HOSTCCFLAGS = $(IFLAGS) $(HOSTCPPFLAGS) $(HOSTCFLAGS)
 LDFLAGS    := $(ALLFFLIBS:%=$(LD_PATH)lib%) $(LDFLAGS)
 
 define COMPILE
        $(call $(1)DEP,$(1))
-       $($(1)) $($(1)FLAGS) $($(2)) $($(1)_DEPFLAGS) $($(1)_C) $($(1)_O) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<)
+       $($(1)) $($(1)FLAGS) $($(1)_DEPFLAGS) $($(1)_C) $($(1)_O) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<)
 endef
 
 COMPILE_C = $(call COMPILE,CC)
 COMPILE_CXX = $(call COMPILE,CXX)
 COMPILE_S = $(call COMPILE,AS)
 COMPILE_M = $(call COMPILE,OBJCC)
-COMPILE_X86ASM = $(call COMPILE,X86ASM)
 COMPILE_HOSTC = $(call COMPILE,HOSTCC)
-COMPILE_NVCC = $(call COMPILE,NVCC)
-COMPILE_MMI = $(call COMPILE,CC,MMIFLAGS)
-COMPILE_MSA = $(call COMPILE,CC,MSAFLAGS)
-COMPILE_LSX = $(call COMPILE,CC,LSXFLAGS)
-COMPILE_LASX = $(call COMPILE,CC,LASXFLAGS)
-
-%_mmi.o: %_mmi.c
-	$(COMPILE_MMI)
-
-%_msa.o: %_msa.c
-	$(COMPILE_MSA)
-
-%_lsx.o: %_lsx.c
-	$(COMPILE_LSX)
-
-%_lasx.o: %_lasx.c
-	$(COMPILE_LASX)
 
 %.o: %.c
 	$(COMPILE_C)
@@ -95,16 +74,17 @@ COMPILE_LASX = $(call COMPILE,CC,LASXFLAGS)
 %_host.o: %.c
 	$(COMPILE_HOSTC)
 
-%$(DEFAULT_X86ASMD).asm: %.asm
-	$(DEPX86ASM) $(X86ASMFLAGS) -M -o $@ $< > $(@:.asm=.d)
-	$(X86ASM) $(X86ASMFLAGS) -e $< | sed '/^%/d;/^$$/d;' > $@
+%$(DEFAULT_YASMD).asm: %.asm
+	$(DEPYASM) $(YASMFLAGS) -I $(<D)/ -M -o $@ $< > $(@:.asm=.d)
+	$(YASM) $(YASMFLAGS) -I $(<D)/ -e $< | sed '/^%/d;/^$$/d;' > $@
 
 %.o: %.asm
-	$(COMPILE_X86ASM)
+	$(DEPYASM) $(YASMFLAGS) -I $(<D)/ -M -o $@ $< > $(@:.o=.d)
+	$(YASM) $(YASMFLAGS) -I $(<D)/ -o $@ $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<)
 	-$(if $(ASMSTRIPFLAGS), $(STRIP) $(ASMSTRIPFLAGS) $@)
 
 %.o: %.rc
-	$(WINDRES) $(IFLAGS) $(foreach ARG,$(CC_DEPFLAGS),--preprocessor-arg "$(ARG)") -o $@ $<
+	$(WINDRES) $(IFLAGS) --preprocessor "$(DEPWINDRES) -E -xc-header -DRC_INVOKED $(CC_DEPFLAGS)" -o $@ $<
 
 %.i: %.c
 	$(CC) $(CCFLAGS) $(CC_E) $<
@@ -112,40 +92,10 @@ COMPILE_LASX = $(call COMPILE,CC,LASXFLAGS)
 %.h.c:
 	$(Q)echo '#include "$*.h"' >$@
 
-$(BIN2CEXE): ffbuild/bin2c_host.o
-	$(HOSTLD) $(HOSTLDFLAGS) $(HOSTLD_O) $^ $(HOSTEXTRALIBS)
-
-%.metal.air: %.metal
-	$(METALCC) $< -o $@
-
-%.metallib: %.metal.air
-	$(METALLIB) --split-module-without-linking $< -o $@
-
-%.metallib.c: %.metallib $(BIN2CEXE)
-	$(BIN2C) $< $@ $(subst .,_,$(basename $(notdir $@)))
-
-%.ptx: %.cu $(SRC_PATH)/compat/cuda/cuda_runtime.h
-	$(COMPILE_NVCC)
-
-ifdef CONFIG_PTX_COMPRESSION
-%.ptx.gz: TAG = GZIP
-%.ptx.gz: %.ptx
-	$(M)gzip -c9 $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<) >$@
-
-%.ptx.c: %.ptx.gz $(BIN2CEXE)
-	$(BIN2C) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<) $@ $(subst .,_,$(basename $(notdir $@)))
-else
-%.ptx.c: %.ptx $(BIN2CEXE)
-	$(BIN2C) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<) $@ $(subst .,_,$(basename $(notdir $@)))
-endif
-
-clean::
-	$(RM) $(BIN2CEXE)
-
-%.c %.h %.pc %.ver %.version: TAG = GEN
+%.c %.h %.ver: TAG = GEN
 
 # Dummy rule to stop make trying to rebuild removed or renamed headers
-%.h %_template.c:
+%.h:
 	@:
 
 # Disable suffix rules.  Most of the builtin rules are suffix rules,
@@ -156,22 +106,18 @@ clean::
 $(OBJS):
 endif
 
-include $(SRC_PATH)/ffbuild/arch.mak
+include $(SRC_PATH)/arch.mak
 
 OBJS      += $(OBJS-yes)
 SLIBOBJS  += $(SLIBOBJS-yes)
-SHLIBOBJS += $(SHLIBOBJS-yes)
-STLIBOBJS += $(STLIBOBJS-yes)
 FFLIBS    := $($(NAME)_FFLIBS) $(FFLIBS-yes) $(FFLIBS)
 TESTPROGS += $(TESTPROGS-yes)
 
 LDLIBS       = $(FFLIBS:%=%$(BUILDSUF))
-FFEXTRALIBS := $(LDLIBS:%=$(LD_LIB)) $(foreach lib,EXTRALIBS-$(NAME) $(FFLIBS:%=EXTRALIBS-%),$($(lib))) $(EXTRALIBS)
+FFEXTRALIBS := $(LDLIBS:%=$(LD_LIB)) $(EXTRALIBS)
 
 OBJS      := $(sort $(OBJS:%=$(SUBDIR)%))
 SLIBOBJS  := $(sort $(SLIBOBJS:%=$(SUBDIR)%))
-SHLIBOBJS := $(sort $(SHLIBOBJS:%=$(SUBDIR)%))
-STLIBOBJS := $(sort $(STLIBOBJS:%=$(SUBDIR)%))
 TESTOBJS  := $(TESTOBJS:%=$(SUBDIR)tests/%) $(TESTPROGS:%=$(SUBDIR)tests/%.o)
 TESTPROGS := $(TESTPROGS:%=$(SUBDIR)tests/%$(EXESUF))
 HOSTOBJS  := $(HOSTPROGS:%=$(SUBDIR)%.o)
@@ -190,10 +136,8 @@ ALLHEADERS := $(subst $(SRC_DIR)/,$(SUBDIR),$(wildcard $(SRC_DIR)/*.h $(SRC_DIR)
 SKIPHEADERS += $(ARCH_HEADERS:%=$(ARCH)/%) $(SKIPHEADERS-)
 SKIPHEADERS := $(SKIPHEADERS:%=$(SUBDIR)%)
 HOBJS        = $(filter-out $(SKIPHEADERS:.h=.h.o),$(ALLHEADERS:.h=.h.o))
-PTXOBJS      = $(filter %.ptx.o,$(OBJS))
-$(HOBJS):     CCFLAGS += $(CFLAGS_HEADERS)
 checkheaders: $(HOBJS)
-.SECONDARY:   $(HOBJS:.o=.c) $(PTXOBJS:.o=.c) $(PTXOBJS:.o=.gz) $(PTXOBJS:.o=)
+.SECONDARY:   $(HOBJS:.o=.c)
 
 alltools: $(TOOLS)
 
@@ -201,20 +145,19 @@ $(HOSTOBJS): %.o: %.c
 	$(COMPILE_HOSTC)
 
 $(HOSTPROGS): %$(HOSTEXESUF): %.o
-	$(HOSTLD) $(HOSTLDFLAGS) $(HOSTLD_O) $^ $(HOSTEXTRALIBS)
+	$(HOSTLD) $(HOSTLDFLAGS) $(HOSTLD_O) $^ $(HOSTLIBS)
 
 $(OBJS):     | $(sort $(dir $(OBJS)))
 $(HOBJS):    | $(sort $(dir $(HOBJS)))
 $(HOSTOBJS): | $(sort $(dir $(HOSTOBJS)))
 $(SLIBOBJS): | $(sort $(dir $(SLIBOBJS)))
-$(SHLIBOBJS): | $(sort $(dir $(SHLIBOBJS)))
-$(STLIBOBJS): | $(sort $(dir $(STLIBOBJS)))
 $(TESTOBJS): | $(sort $(dir $(TESTOBJS)))
 $(TOOLOBJS): | tools
 
-OUTDIRS := $(OUTDIRS) $(dir $(OBJS) $(HOBJS) $(HOSTOBJS) $(SLIBOBJS) $(SHLIBOBJS) $(STLIBOBJS) $(TESTOBJS))
+OBJDIRS := $(OBJDIRS) $(dir $(OBJS) $(HOBJS) $(HOSTOBJS) $(SLIBOBJS) $(TESTOBJS))
 
-CLEANSUFFIXES     = *.d *.gcda *.gcno *.h.c *.ho *.map *.o *.pc *.ptx *.ptx.gz *.ptx.c *.ver *.version *$(DEFAULT_X86ASMD).asm *~ *.ilk *.pdb
+CLEANSUFFIXES     = *.d *.o *~ *.h.c *.gcda *.gcno *.map *.ver *.ho *$(DEFAULT_YASMD).asm
+DISTCLEANSUFFIXES = *.pc
 LIBSUFFIXES       = *.a *.lib *.so *.so.* *.dylib *.dll *.def *.dll.a
 
 define RULES
@@ -224,4 +167,4 @@ endef
 
 $(eval $(RULES))
 
--include $(wildcard $(OBJS:.o=.d) $(HOSTOBJS:.o=.d) $(TESTOBJS:.o=.d) $(HOBJS:.o=.d) $(SHLIBOBJS:.o=.d) $(STLIBOBJS:.o=.d) $(SLIBOBJS:.o=.d)) $(OBJS:.o=$(DEFAULT_X86ASMD).d)
+-include $(wildcard $(OBJS:.o=.d) $(HOSTOBJS:.o=.d) $(TESTOBJS:.o=.d) $(HOBJS:.o=.d) $(SLIBOBJS:.o=.d)) $(OBJS:.o=$(DEFAULT_YASMD).d)

compat/atomics/suncc/stdatomic.h

@@ -108,7 +108,7 @@ static inline int atomic_compare_exchange_strong(intptr_t *object, intptr_t *exp
                                                  intptr_t desired)
 {
     intptr_t  old = *expected;
-    *expected = (intptr_t)atomic_cas_ptr(object, (void *)old, (void *)desired);
+    *expected = atomic_cas_ptr(object, old, desired);
     return *expected == old;
 }
 

compat/atomics/win32/stdatomic.h

@@ -95,7 +95,7 @@ do {                                    \
     atomic_load(object)
 
 #define atomic_exchange(object, desired) \
-    InterlockedExchangePointer((PVOID volatile *)object, (PVOID)desired)
+    InterlockedExchangePointer(object, desired);
 
 #define atomic_exchange_explicit(object, desired, order) \
     atomic_exchange(object, desired)
@@ -104,8 +104,7 @@ static inline int atomic_compare_exchange_strong(intptr_t *object, intptr_t *exp
                                                  intptr_t desired)
 {
     intptr_t old = *expected;
-    *expected = (intptr_t)InterlockedCompareExchangePointer(
-        (PVOID *)object, (PVOID)desired, (PVOID)old);
+    *expected = InterlockedCompareExchangePointer(object, desired, old);
     return *expected == old;
 }
 

compat/avisynth/avs/capi.h

@@ -0,0 +1,62 @@
+// Avisynth C Interface Version 0.20
+// Copyright 2003 Kevin Atkinson
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
+// http://www.gnu.org/copyleft/gpl.html .
+//
+// As a special exception, I give you permission to link to the
+// Avisynth C interface with independent modules that communicate with
+// the Avisynth C interface solely through the interfaces defined in
+// avisynth_c.h, regardless of the license terms of these independent
+// modules, and to copy and distribute the resulting combined work
+// under terms of your choice, provided that every copy of the
+// combined work is accompanied by a complete copy of the source code
+// of the Avisynth C interface and Avisynth itself (with the version
+// used to produce the combined work), being distributed under the
+// terms of the GNU General Public License plus this exception.  An
+// independent module is a module which is not derived from or based
+// on Avisynth C Interface, such as 3rd-party filters, import and
+// export plugins, or graphical user interfaces.
+
+#ifndef AVS_CAPI_H
+#define AVS_CAPI_H
+
+#ifdef __cplusplus
+#  define EXTERN_C extern "C"
+#else
+#  define EXTERN_C
+#endif
+
+#ifndef AVSC_USE_STDCALL
+#  define AVSC_CC __cdecl
+#else
+#  define AVSC_CC __stdcall
+#endif
+
+#define AVSC_INLINE static __inline
+
+#ifdef BUILDING_AVSCORE
+#  define AVSC_EXPORT EXTERN_C
+#  define AVSC_API(ret, name) EXTERN_C __declspec(dllexport) ret AVSC_CC name
+#else
+#  define AVSC_EXPORT EXTERN_C __declspec(dllexport)
+#  ifndef AVSC_NO_DECLSPEC
+#    define AVSC_API(ret, name) EXTERN_C __declspec(dllimport) ret AVSC_CC name
+#  else
+#    define AVSC_API(ret, name) typedef ret (AVSC_CC *name##_func)
+#  endif
+#endif
+
+#endif //AVS_CAPI_H

compat/avisynth/avs/config.h

@@ -0,0 +1,55 @@
+// Avisynth C Interface Version 0.20
+// Copyright 2003 Kevin Atkinson
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
+// http://www.gnu.org/copyleft/gpl.html .
+//
+// As a special exception, I give you permission to link to the
+// Avisynth C interface with independent modules that communicate with
+// the Avisynth C interface solely through the interfaces defined in
+// avisynth_c.h, regardless of the license terms of these independent
+// modules, and to copy and distribute the resulting combined work
+// under terms of your choice, provided that every copy of the
+// combined work is accompanied by a complete copy of the source code
+// of the Avisynth C interface and Avisynth itself (with the version
+// used to produce the combined work), being distributed under the
+// terms of the GNU General Public License plus this exception.  An
+// independent module is a module which is not derived from or based
+// on Avisynth C Interface, such as 3rd-party filters, import and
+// export plugins, or graphical user interfaces.
+
+#ifndef AVS_CONFIG_H
+#define AVS_CONFIG_H
+
+// Undefine this to get cdecl calling convention
+#define AVSC_USE_STDCALL 1
+
+// NOTE TO PLUGIN AUTHORS:
+// Because FRAME_ALIGN can be substantially higher than the alignment
+// a plugin actually needs, plugins should not use FRAME_ALIGN to check for
+// alignment. They should always request the exact alignment value they need.
+// This is to make sure that plugins work over the widest range of AviSynth
+// builds possible.
+#define FRAME_ALIGN 32
+
+#if   defined(_M_AMD64) || defined(__x86_64)
+#   define X86_64
+#elif defined(_M_IX86) || defined(__i386__)
+#   define X86_32
+#else
+#   error Unsupported CPU architecture.
+#endif
+
+#endif //AVS_CONFIG_H

compat/avisynth/avs/types.h

@@ -0,0 +1,51 @@
+// Avisynth C Interface Version 0.20
+// Copyright 2003 Kevin Atkinson
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
+// http://www.gnu.org/copyleft/gpl.html .
+//
+// As a special exception, I give you permission to link to the
+// Avisynth C interface with independent modules that communicate with
+// the Avisynth C interface solely through the interfaces defined in
+// avisynth_c.h, regardless of the license terms of these independent
+// modules, and to copy and distribute the resulting combined work
+// under terms of your choice, provided that every copy of the
+// combined work is accompanied by a complete copy of the source code
+// of the Avisynth C interface and Avisynth itself (with the version
+// used to produce the combined work), being distributed under the
+// terms of the GNU General Public License plus this exception.  An
+// independent module is a module which is not derived from or based
+// on Avisynth C Interface, such as 3rd-party filters, import and
+// export plugins, or graphical user interfaces.
+
+#ifndef AVS_TYPES_H
+#define AVS_TYPES_H
+
+// Define all types necessary for interfacing with avisynth.dll
+
+// Raster types used by VirtualDub & Avisynth
+typedef unsigned int    Pixel32;
+typedef unsigned char   BYTE;
+
+// Audio Sample information
+typedef float SFLOAT;
+
+#ifdef __GNUC__
+typedef long long int INT64;
+#else
+typedef __int64 INT64;
+#endif
+
+#endif //AVS_TYPES_H

compat/avisynth/avxsynth_c.h

@@ -0,0 +1,728 @@
+// Avisynth C Interface Version 0.20
+// Copyright 2003 Kevin Atkinson
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301 USA, or visit
+// http://www.gnu.org/copyleft/gpl.html .
+//
+// As a special exception, I give you permission to link to the
+// Avisynth C interface with independent modules that communicate with
+// the Avisynth C interface solely through the interfaces defined in
+// avisynth_c.h, regardless of the license terms of these independent
+// modules, and to copy and distribute the resulting combined work
+// under terms of your choice, provided that every copy of the
+// combined work is accompanied by a complete copy of the source code
+// of the Avisynth C interface and Avisynth itself (with the version
+// used to produce the combined work), being distributed under the
+// terms of the GNU General Public License plus this exception.  An
+// independent module is a module which is not derived from or based
+// on Avisynth C Interface, such as 3rd-party filters, import and
+// export plugins, or graphical user interfaces.
+
+#ifndef __AVXSYNTH_C__
+#define __AVXSYNTH_C__
+
+#include "windowsPorts/windows2linux.h"
+#include <stdarg.h>
+
+#ifdef __cplusplus
+#  define EXTERN_C extern "C"
+#else
+#  define EXTERN_C
+#endif
+
+#define AVSC_USE_STDCALL 1
+
+#ifndef AVSC_USE_STDCALL
+#  define AVSC_CC __cdecl
+#else
+#  define AVSC_CC __stdcall
+#endif
+
+#define AVSC_INLINE static __inline
+
+#ifdef AVISYNTH_C_EXPORTS
+#  define AVSC_EXPORT EXTERN_C
+#  define AVSC_API(ret, name) EXTERN_C __declspec(dllexport) ret AVSC_CC name
+#else
+#  define AVSC_EXPORT EXTERN_C __declspec(dllexport)
+#  ifndef AVSC_NO_DECLSPEC
+#    define AVSC_API(ret, name) EXTERN_C __declspec(dllimport) ret AVSC_CC name
+#  else
+#    define AVSC_API(ret, name) typedef ret (AVSC_CC *name##_func)
+#  endif
+#endif
+
+#ifdef __GNUC__
+typedef long long int INT64;
+#else
+typedef __int64 INT64;
+#endif
+
+
+/////////////////////////////////////////////////////////////////////
+//
+// Constants
+//
+
+#ifndef __AVXSYNTH_H__
+enum { AVISYNTH_INTERFACE_VERSION = 3 };
+#endif
+
+enum {AVS_SAMPLE_INT8  = 1<<0,
+      AVS_SAMPLE_INT16 = 1<<1,
+      AVS_SAMPLE_INT24 = 1<<2,
+      AVS_SAMPLE_INT32 = 1<<3,
+      AVS_SAMPLE_FLOAT = 1<<4};
+
+enum {AVS_PLANAR_Y=1<<0,
+      AVS_PLANAR_U=1<<1,
+      AVS_PLANAR_V=1<<2,
+      AVS_PLANAR_ALIGNED=1<<3,
+      AVS_PLANAR_Y_ALIGNED=AVS_PLANAR_Y|AVS_PLANAR_ALIGNED,
+      AVS_PLANAR_U_ALIGNED=AVS_PLANAR_U|AVS_PLANAR_ALIGNED,
+      AVS_PLANAR_V_ALIGNED=AVS_PLANAR_V|AVS_PLANAR_ALIGNED};
+
+  // Colorspace properties.
+enum {AVS_CS_BGR = 1<<28,
+      AVS_CS_YUV = 1<<29,
+      AVS_CS_INTERLEAVED = 1<<30,
+      AVS_CS_PLANAR = 1<<31};
+
+  // Specific colorformats
+enum {
+  AVS_CS_UNKNOWN = 0,
+  AVS_CS_BGR24 = 1<<0 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
+  AVS_CS_BGR32 = 1<<1 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
+  AVS_CS_YUY2 = 1<<2 | AVS_CS_YUV | AVS_CS_INTERLEAVED,
+  AVS_CS_YV12 = 1<<3 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-v-u, planar
+  AVS_CS_I420 = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-u-v, planar
+  AVS_CS_IYUV = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR  // same as above
+};
+
+enum {
+  AVS_IT_BFF = 1<<0,
+  AVS_IT_TFF = 1<<1,
+  AVS_IT_FIELDBASED = 1<<2};
+
+enum {
+  AVS_FILTER_TYPE=1,
+  AVS_FILTER_INPUT_COLORSPACE=2,
+  AVS_FILTER_OUTPUT_TYPE=9,
+  AVS_FILTER_NAME=4,
+  AVS_FILTER_AUTHOR=5,
+  AVS_FILTER_VERSION=6,
+  AVS_FILTER_ARGS=7,
+  AVS_FILTER_ARGS_INFO=8,
+  AVS_FILTER_ARGS_DESCRIPTION=10,
+  AVS_FILTER_DESCRIPTION=11};
+
+enum {  //SUBTYPES
+  AVS_FILTER_TYPE_AUDIO=1,
+  AVS_FILTER_TYPE_VIDEO=2,
+  AVS_FILTER_OUTPUT_TYPE_SAME=3,
+  AVS_FILTER_OUTPUT_TYPE_DIFFERENT=4};
+
+enum {
+  AVS_CACHE_NOTHING=0,
+  AVS_CACHE_RANGE=1,
+  AVS_CACHE_ALL=2,
+  AVS_CACHE_AUDIO=3,
+  AVS_CACHE_AUDIO_NONE=4,
+  AVS_CACHE_AUDIO_AUTO=5
+};
+
+#define AVS_FRAME_ALIGN 16
+
+typedef struct AVS_Clip AVS_Clip;
+typedef struct AVS_ScriptEnvironment AVS_ScriptEnvironment;
+
+/////////////////////////////////////////////////////////////////////
+//
+// AVS_VideoInfo
+//
+
+// AVS_VideoInfo is layed out identicly to VideoInfo
+typedef struct AVS_VideoInfo {
+  int width, height;    // width=0 means no video
+  unsigned fps_numerator, fps_denominator;
+  int num_frames;
+
+  int pixel_type;
+
+  int audio_samples_per_second;   // 0 means no audio
+  int sample_type;
+  INT64 num_audio_samples;
+  int nchannels;
+
+  // Imagetype properties
+
+  int image_type;
+} AVS_VideoInfo;
+
+// useful functions of the above
+AVSC_INLINE int avs_has_video(const AVS_VideoInfo * p)
+        { return (p->width!=0); }
+
+AVSC_INLINE int avs_has_audio(const AVS_VideoInfo * p)
+        { return (p->audio_samples_per_second!=0); }
+
+AVSC_INLINE int avs_is_rgb(const AVS_VideoInfo * p)
+        { return !!(p->pixel_type&AVS_CS_BGR); }
+
+AVSC_INLINE int avs_is_rgb24(const AVS_VideoInfo * p)
+        { return (p->pixel_type&AVS_CS_BGR24)==AVS_CS_BGR24; } // Clear out additional properties
+
+AVSC_INLINE int avs_is_rgb32(const AVS_VideoInfo * p)
+        { return (p->pixel_type & AVS_CS_BGR32) == AVS_CS_BGR32 ; }
+
+AVSC_INLINE int avs_is_yuv(const AVS_VideoInfo * p)
+        { return !!(p->pixel_type&AVS_CS_YUV ); }
+
+AVSC_INLINE int avs_is_yuy2(const AVS_VideoInfo * p)
+        { return (p->pixel_type & AVS_CS_YUY2) == AVS_CS_YUY2; }
+
+AVSC_INLINE int avs_is_yv12(const AVS_VideoInfo * p)
+        { return ((p->pixel_type & AVS_CS_YV12) == AVS_CS_YV12)||((p->pixel_type & AVS_CS_I420) == AVS_CS_I420); }
+
+AVSC_INLINE int avs_is_color_space(const AVS_VideoInfo * p, int c_space)
+        { return ((p->pixel_type & c_space) == c_space); }
+
+AVSC_INLINE int avs_is_property(const AVS_VideoInfo * p, int property)
+        { return ((p->pixel_type & property)==property ); }
+
+AVSC_INLINE int avs_is_planar(const AVS_VideoInfo * p)
+        { return !!(p->pixel_type & AVS_CS_PLANAR); }
+
+AVSC_INLINE int avs_is_field_based(const AVS_VideoInfo * p)
+        { return !!(p->image_type & AVS_IT_FIELDBASED); }
+
+AVSC_INLINE int avs_is_parity_known(const AVS_VideoInfo * p)
+        { return ((p->image_type & AVS_IT_FIELDBASED)&&(p->image_type & (AVS_IT_BFF | AVS_IT_TFF))); }
+
+AVSC_INLINE int avs_is_bff(const AVS_VideoInfo * p)
+        { return !!(p->image_type & AVS_IT_BFF); }
+
+AVSC_INLINE int avs_is_tff(const AVS_VideoInfo * p)
+        { return !!(p->image_type & AVS_IT_TFF); }
+
+AVSC_INLINE int avs_bits_per_pixel(const AVS_VideoInfo * p)
+{
+  switch (p->pixel_type) {
+      case AVS_CS_BGR24: return 24;
+      case AVS_CS_BGR32: return 32;
+      case AVS_CS_YUY2:  return 16;
+      case AVS_CS_YV12:
+      case AVS_CS_I420:  return 12;
+      default:           return 0;
+    }
+}
+AVSC_INLINE int avs_bytes_from_pixels(const AVS_VideoInfo * p, int pixels)
+        { return pixels * (avs_bits_per_pixel(p)>>3); }   // Will work on planar images, but will return only luma planes
+
+AVSC_INLINE int avs_row_size(const AVS_VideoInfo * p)
+        { return avs_bytes_from_pixels(p,p->width); }  // Also only returns first plane on planar images
+
+AVSC_INLINE int avs_bmp_size(const AVS_VideoInfo * vi)
+        { if (avs_is_planar(vi)) {int p = vi->height * ((avs_row_size(vi)+3) & ~3); p+=p>>1; return p;  } return vi->height * ((avs_row_size(vi)+3) & ~3); }
+
+AVSC_INLINE int avs_samples_per_second(const AVS_VideoInfo * p)
+        { return p->audio_samples_per_second; }
+
+
+AVSC_INLINE int avs_bytes_per_channel_sample(const AVS_VideoInfo * p)
+{
+    switch (p->sample_type) {
+      case AVS_SAMPLE_INT8:  return sizeof(signed char);
+      case AVS_SAMPLE_INT16: return sizeof(signed short);
+      case AVS_SAMPLE_INT24: return 3;
+      case AVS_SAMPLE_INT32: return sizeof(signed int);
+      case AVS_SAMPLE_FLOAT: return sizeof(float);
+      default: return 0;
+    }
+}
+AVSC_INLINE int avs_bytes_per_audio_sample(const AVS_VideoInfo * p)
+        { return p->nchannels*avs_bytes_per_channel_sample(p);}
+
+AVSC_INLINE INT64 avs_audio_samples_from_frames(const AVS_VideoInfo * p, INT64 frames)
+        { return ((INT64)(frames) * p->audio_samples_per_second * p->fps_denominator / p->fps_numerator); }
+
+AVSC_INLINE int avs_frames_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
+        { return (int)(samples * (INT64)p->fps_numerator / (INT64)p->fps_denominator / (INT64)p->audio_samples_per_second); }
+
+AVSC_INLINE INT64 avs_audio_samples_from_bytes(const AVS_VideoInfo * p, INT64 bytes)
+        { return bytes / avs_bytes_per_audio_sample(p); }
+
+AVSC_INLINE INT64 avs_bytes_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
+        { return samples * avs_bytes_per_audio_sample(p); }
+
+AVSC_INLINE int avs_audio_channels(const AVS_VideoInfo * p)
+        { return p->nchannels; }
+
+AVSC_INLINE int avs_sample_type(const AVS_VideoInfo * p)
+        { return p->sample_type;}
+
+// useful mutator
+AVSC_INLINE void avs_set_property(AVS_VideoInfo * p, int property)
+        { p->image_type|=property; }
+
+AVSC_INLINE void avs_clear_property(AVS_VideoInfo * p, int property)
+        { p->image_type&=~property; }
+
+AVSC_INLINE void avs_set_field_based(AVS_VideoInfo * p, int isfieldbased)
+        { if (isfieldbased) p->image_type|=AVS_IT_FIELDBASED; else p->image_type&=~AVS_IT_FIELDBASED; }
+
+AVSC_INLINE void avs_set_fps(AVS_VideoInfo * p, unsigned numerator, unsigned denominator)
+{
+    unsigned x=numerator, y=denominator;
+    while (y) {   // find gcd
+      unsigned t = x%y; x = y; y = t;
+    }
+    p->fps_numerator = numerator/x;
+    p->fps_denominator = denominator/x;
+}
+
+AVSC_INLINE int avs_is_same_colorspace(AVS_VideoInfo * x, AVS_VideoInfo * y)
+{
+        return (x->pixel_type == y->pixel_type)
+                || (avs_is_yv12(x) && avs_is_yv12(y));
+}
+
+/////////////////////////////////////////////////////////////////////
+//
+// AVS_VideoFrame
+//
+
+// VideoFrameBuffer holds information about a memory block which is used
+// for video data.  For efficiency, instances of this class are not deleted
+// when the refcount reaches zero; instead they're stored in a linked list
+// to be reused.  The instances are deleted when the corresponding AVS
+// file is closed.
+
+// AVS_VideoFrameBuffer is layed out identicly to VideoFrameBuffer
+// DO NOT USE THIS STRUCTURE DIRECTLY
+typedef struct AVS_VideoFrameBuffer {
+  unsigned char * data;
+  int data_size;
+  // sequence_number is incremented every time the buffer is changed, so
+  // that stale views can tell they're no longer valid.
+  long sequence_number;
+
+  long refcount;
+} AVS_VideoFrameBuffer;
+
+// VideoFrame holds a "window" into a VideoFrameBuffer.
+
+// AVS_VideoFrame is layed out identicly to IVideoFrame
+// DO NOT USE THIS STRUCTURE DIRECTLY
+typedef struct AVS_VideoFrame {
+  int refcount;
+  AVS_VideoFrameBuffer * vfb;
+  int offset, pitch, row_size, height, offsetU, offsetV, pitchUV;  // U&V offsets are from top of picture.
+} AVS_VideoFrame;
+
+// Access functions for AVS_VideoFrame
+AVSC_INLINE int avs_get_pitch(const AVS_VideoFrame * p) {
+        return p->pitch;}
+
+AVSC_INLINE int avs_get_pitch_p(const AVS_VideoFrame * p, int plane) {
+  switch (plane) {
+  case AVS_PLANAR_U: case AVS_PLANAR_V: return p->pitchUV;}
+  return p->pitch;}
+
+AVSC_INLINE int avs_get_row_size(const AVS_VideoFrame * p) {
+        return p->row_size; }
+
+AVSC_INLINE int avs_get_row_size_p(const AVS_VideoFrame * p, int plane) {
+        int r;
+    switch (plane) {
+    case AVS_PLANAR_U: case AVS_PLANAR_V:
+                if (p->pitchUV) return p->row_size>>1;
+                else            return 0;
+    case AVS_PLANAR_U_ALIGNED: case AVS_PLANAR_V_ALIGNED:
+                if (p->pitchUV) {
+                        r = ((p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)) )>>1; // Aligned rowsize
+                        if (r < p->pitchUV)
+                                return r;
+                        return p->row_size>>1;
+                } else return 0;
+    case AVS_PLANAR_Y_ALIGNED:
+                r = (p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)); // Aligned rowsize
+                if (r <= p->pitch)
+                        return r;
+                return p->row_size;
+    }
+    return p->row_size;
+}
+
+AVSC_INLINE int avs_get_height(const AVS_VideoFrame * p) {
+        return p->height;}
+
+AVSC_INLINE int avs_get_height_p(const AVS_VideoFrame * p, int plane) {
+        switch (plane) {
+                case AVS_PLANAR_U: case AVS_PLANAR_V:
+                        if (p->pitchUV) return p->height>>1;
+                        return 0;
+        }
+        return p->height;}
+
+AVSC_INLINE const unsigned char* avs_get_read_ptr(const AVS_VideoFrame * p) {
+        return p->vfb->data + p->offset;}
+
+AVSC_INLINE const unsigned char* avs_get_read_ptr_p(const AVS_VideoFrame * p, int plane)
+{
+        switch (plane) {
+                case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
+                case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
+                default:           return p->vfb->data + p->offset;}
+}
+
+AVSC_INLINE int avs_is_writable(const AVS_VideoFrame * p) {
+        return (p->refcount == 1 && p->vfb->refcount == 1);}
+
+AVSC_INLINE unsigned char* avs_get_write_ptr(const AVS_VideoFrame * p)
+{
+        if (avs_is_writable(p)) {
+                ++p->vfb->sequence_number;
+                return p->vfb->data + p->offset;
+        } else
+                return 0;
+}
+
+AVSC_INLINE unsigned char* avs_get_write_ptr_p(const AVS_VideoFrame * p, int plane)
+{
+        if (plane==AVS_PLANAR_Y && avs_is_writable(p)) {
+                ++p->vfb->sequence_number;
+                return p->vfb->data + p->offset;
+        } else if (plane==AVS_PLANAR_Y) {
+                return 0;
+        } else {
+                switch (plane) {
+                        case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
+                        case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
+                        default:       return p->vfb->data + p->offset;
+                }
+        }
+}
+
+#if defined __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+AVSC_API(void, avs_release_video_frame)(AVS_VideoFrame *);
+// makes a shallow copy of a video frame
+AVSC_API(AVS_VideoFrame *, avs_copy_video_frame)(AVS_VideoFrame *);
+#if defined __cplusplus
+}
+#endif // __cplusplus
+
+#ifndef AVSC_NO_DECLSPEC
+AVSC_INLINE void avs_release_frame(AVS_VideoFrame * f)
+  {avs_release_video_frame(f);}
+AVSC_INLINE AVS_VideoFrame * avs_copy_frame(AVS_VideoFrame * f)
+  {return avs_copy_video_frame(f);}
+#endif
+
+/////////////////////////////////////////////////////////////////////
+//
+// AVS_Value
+//
+
+// Treat AVS_Value as a fat pointer.  That is use avs_copy_value
+// and avs_release_value appropiaty as you would if AVS_Value was
+// a pointer.
+
+// To maintain source code compatibility with future versions of the
+// avisynth_c API don't use the AVS_Value directly.  Use the helper
+// functions below.
+
+// AVS_Value is layed out identicly to AVSValue
+typedef struct AVS_Value AVS_Value;
+struct AVS_Value {
+  short type;  // 'a'rray, 'c'lip, 'b'ool, 'i'nt, 'f'loat, 's'tring, 'v'oid, or 'l'ong
+               // for some function e'rror
+  short array_size;
+  union {
+    void * clip; // do not use directly, use avs_take_clip
+    char boolean;
+    int integer;
+    INT64 integer64; // match addition of __int64 to avxplugin.h
+    float floating_pt;
+    const char * string;
+    const AVS_Value * array;
+  } d;
+};
+
+// AVS_Value should be initilized with avs_void.
+// Should also set to avs_void after the value is released
+// with avs_copy_value.  Consider it the equalvent of setting
+// a pointer to NULL
+static const AVS_Value avs_void = {'v'};
+
+AVSC_API(void, avs_copy_value)(AVS_Value * dest, AVS_Value src);
+AVSC_API(void, avs_release_value)(AVS_Value);
+
+AVSC_INLINE int avs_defined(AVS_Value v) { return v.type != 'v'; }
+AVSC_INLINE int avs_is_clip(AVS_Value v) { return v.type == 'c'; }
+AVSC_INLINE int avs_is_bool(AVS_Value v) { return v.type == 'b'; }
+AVSC_INLINE int avs_is_int(AVS_Value v) { return v.type == 'i'; }
+AVSC_INLINE int avs_is_float(AVS_Value v) { return v.type == 'f' || v.type == 'i'; }
+AVSC_INLINE int avs_is_string(AVS_Value v) { return v.type == 's'; }
+AVSC_INLINE int avs_is_array(AVS_Value v) { return v.type == 'a'; }
+AVSC_INLINE int avs_is_error(AVS_Value v) { return v.type == 'e'; }
+
+#if defined __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+AVSC_API(AVS_Clip *, avs_take_clip)(AVS_Value, AVS_ScriptEnvironment *);
+AVSC_API(void, avs_set_to_clip)(AVS_Value *, AVS_Clip *);
+#if defined __cplusplus
+}
+#endif // __cplusplus
+
+AVSC_INLINE int avs_as_bool(AVS_Value v)
+        { return v.d.boolean; }
+AVSC_INLINE int avs_as_int(AVS_Value v)
+        { return v.d.integer; }
+AVSC_INLINE const char * avs_as_string(AVS_Value v)
+        { return avs_is_error(v) || avs_is_string(v) ? v.d.string : 0; }
+AVSC_INLINE double avs_as_float(AVS_Value v)
+        { return avs_is_int(v) ? v.d.integer : v.d.floating_pt; }
+AVSC_INLINE const char * avs_as_error(AVS_Value v)
+        { return avs_is_error(v) ? v.d.string : 0; }
+AVSC_INLINE const AVS_Value * avs_as_array(AVS_Value v)
+        { return v.d.array; }
+AVSC_INLINE int avs_array_size(AVS_Value v)
+        { return avs_is_array(v) ? v.array_size : 1; }
+AVSC_INLINE AVS_Value avs_array_elt(AVS_Value v, int index)
+        { return avs_is_array(v) ? v.d.array[index] : v; }
+
+// only use these functions on am AVS_Value that does not already have
+// an active value.  Remember, treat AVS_Value as a fat pointer.
+AVSC_INLINE AVS_Value avs_new_value_bool(int v0)
+        { AVS_Value v = {0}; v.type = 'b'; v.d.boolean = v0 == 0 ? 0 : 1; return v; }
+AVSC_INLINE AVS_Value avs_new_value_int(int v0)
+        { AVS_Value v = {0}; v.type = 'i'; v.d.integer = v0; return v; }
+AVSC_INLINE AVS_Value avs_new_value_string(const char * v0)
+        { AVS_Value v = {0}; v.type = 's'; v.d.string = v0; return v; }
+AVSC_INLINE AVS_Value avs_new_value_float(float v0)
+        { AVS_Value v = {0}; v.type = 'f'; v.d.floating_pt = v0; return v;}
+AVSC_INLINE AVS_Value avs_new_value_error(const char * v0)
+        { AVS_Value v = {0}; v.type = 'e'; v.d.string = v0; return v; }
+#ifndef AVSC_NO_DECLSPEC
+AVSC_INLINE AVS_Value avs_new_value_clip(AVS_Clip * v0)
+        { AVS_Value v = {0}; avs_set_to_clip(&v, v0); return v; }
+#endif
+AVSC_INLINE AVS_Value avs_new_value_array(AVS_Value * v0, int size)
+        { AVS_Value v = {0}; v.type = 'a'; v.d.array = v0; v.array_size = size; return v; }
+
+/////////////////////////////////////////////////////////////////////
+//
+// AVS_Clip
+//
+#if defined __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+AVSC_API(void, avs_release_clip)(AVS_Clip *);
+AVSC_API(AVS_Clip *, avs_copy_clip)(AVS_Clip *);
+
+AVSC_API(const char *, avs_clip_get_error)(AVS_Clip *); // return 0 if no error
+
+AVSC_API(const AVS_VideoInfo *, avs_get_video_info)(AVS_Clip *);
+
+AVSC_API(int, avs_get_version)(AVS_Clip *);
+
+AVSC_API(AVS_VideoFrame *, avs_get_frame)(AVS_Clip *, int n);
+// The returned video frame must be released with avs_release_video_frame
+
+AVSC_API(int, avs_get_parity)(AVS_Clip *, int n);
+// return field parity if field_based, else parity of first field in frame
+
+AVSC_API(int, avs_get_audio)(AVS_Clip *, void * buf,
+                                  INT64 start, INT64 count);
+// start and count are in samples
+
+AVSC_API(int, avs_set_cache_hints)(AVS_Clip *,
+                                        int cachehints, size_t frame_range);
+#if defined __cplusplus
+}
+#endif // __cplusplus
+
+// This is the callback type used by avs_add_function
+typedef AVS_Value (AVSC_CC * AVS_ApplyFunc)
+                        (AVS_ScriptEnvironment *, AVS_Value args, void * user_data);
+
+typedef struct AVS_FilterInfo AVS_FilterInfo;
+struct AVS_FilterInfo
+{
+  // these members should not be modified outside of the AVS_ApplyFunc callback
+  AVS_Clip * child;
+  AVS_VideoInfo vi;
+  AVS_ScriptEnvironment * env;
+  AVS_VideoFrame * (AVSC_CC * get_frame)(AVS_FilterInfo *, int n);
+  int (AVSC_CC * get_parity)(AVS_FilterInfo *, int n);
+  int (AVSC_CC * get_audio)(AVS_FilterInfo *, void * buf,
+                                  INT64 start, INT64 count);
+  int (AVSC_CC * set_cache_hints)(AVS_FilterInfo *, int cachehints,
+                                        int frame_range);
+  void (AVSC_CC * free_filter)(AVS_FilterInfo *);
+
+  // Should be set when ever there is an error to report.
+  // It is cleared before any of the above methods are called
+  const char * error;
+  // this is to store whatever and may be modified at will
+  void * user_data;
+};
+
+// Create a new filter
+// fi is set to point to the AVS_FilterInfo so that you can
+//   modify it once it is initilized.
+// store_child should generally be set to true.  If it is not
+//    set than ALL methods (the function pointers) must be defined
+// If it is set than you do not need to worry about freeing the child
+//    clip.
+#if defined __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+AVSC_API(AVS_Clip *, avs_new_c_filter)(AVS_ScriptEnvironment * e,
+                                      AVS_FilterInfo * * fi,
+                                      AVS_Value child, int store_child);
+#if defined __cplusplus
+}
+#endif // __cplusplus
+
+
+/////////////////////////////////////////////////////////////////////
+//
+// AVS_ScriptEnvironment
+//
+
+// For GetCPUFlags.  These are backwards-compatible with those in VirtualDub.
+enum {
+                                /* slowest CPU to support extension */
+  AVS_CPU_FORCE        = 0x01,   // N/A
+  AVS_CPU_FPU          = 0x02,   // 386/486DX
+  AVS_CPU_MMX          = 0x04,   // P55C, K6, PII
+  AVS_CPU_INTEGER_SSE  = 0x08,   // PIII, Athlon
+  AVS_CPU_SSE          = 0x10,   // PIII, Athlon XP/MP
+  AVS_CPU_SSE2         = 0x20,   // PIV, Hammer
+  AVS_CPU_3DNOW        = 0x40,   // K6-2
+  AVS_CPU_3DNOW_EXT    = 0x80,   // Athlon
+  AVS_CPU_X86_64       = 0xA0,   // Hammer (note: equiv. to 3DNow + SSE2,
+                                 // which only Hammer will have anyway)
+};
+
+#if defined __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+AVSC_API(const char *, avs_get_error)(AVS_ScriptEnvironment *); // return 0 if no error
+
+AVSC_API(long, avs_get_cpu_flags)(AVS_ScriptEnvironment *);
+AVSC_API(int, avs_check_version)(AVS_ScriptEnvironment *, int version);
+
+AVSC_API(char *, avs_save_string)(AVS_ScriptEnvironment *, const char* s, int length);
+AVSC_API(char *, avs_sprintf)(AVS_ScriptEnvironment *, const char * fmt, ...);
+
+AVSC_API(char *, avs_vsprintf)(AVS_ScriptEnvironment *, const char * fmt, va_list val);
+ // note: val is really a va_list; I hope everyone typedefs va_list to a pointer
+
+AVSC_API(int, avs_add_function)(AVS_ScriptEnvironment *,
+                                     const char * name, const char * params,
+                                     AVS_ApplyFunc apply, void * user_data);
+
+AVSC_API(int, avs_function_exists)(AVS_ScriptEnvironment *, const char * name);
+
+AVSC_API(AVS_Value, avs_invoke)(AVS_ScriptEnvironment *, const char * name,
+                               AVS_Value args, const char** arg_names);
+// The returned value must be be released with avs_release_value
+
+AVSC_API(AVS_Value, avs_get_var)(AVS_ScriptEnvironment *, const char* name);
+// The returned value must be be released with avs_release_value
+
+AVSC_API(int, avs_set_var)(AVS_ScriptEnvironment *, const char* name, AVS_Value val);
+
+AVSC_API(int, avs_set_global_var)(AVS_ScriptEnvironment *, const char* name, const AVS_Value val);
+
+//void avs_push_context(AVS_ScriptEnvironment *, int level=0);
+//void avs_pop_context(AVS_ScriptEnvironment *);
+
+AVSC_API(AVS_VideoFrame *, avs_new_video_frame_a)(AVS_ScriptEnvironment *,
+                                          const AVS_VideoInfo * vi, int align);
+// align should be at least 16
+#if defined __cplusplus
+}
+#endif // __cplusplus
+
+#ifndef AVSC_NO_DECLSPEC
+AVSC_INLINE
+AVS_VideoFrame * avs_new_video_frame(AVS_ScriptEnvironment * env,
+                                     const AVS_VideoInfo * vi)
+  {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
+
+AVSC_INLINE
+AVS_VideoFrame * avs_new_frame(AVS_ScriptEnvironment * env,
+                               const AVS_VideoInfo * vi)
+  {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
+#endif
+
+#if defined __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+AVSC_API(int, avs_make_writable)(AVS_ScriptEnvironment *, AVS_VideoFrame * * pvf);
+
+AVSC_API(void, avs_bit_blt)(AVS_ScriptEnvironment *, unsigned char* dstp, int dst_pitch, const unsigned char* srcp, int src_pitch, int row_size, int height);
+
+typedef void (AVSC_CC *AVS_ShutdownFunc)(void* user_data, AVS_ScriptEnvironment * env);
+AVSC_API(void, avs_at_exit)(AVS_ScriptEnvironment *, AVS_ShutdownFunc function, void * user_data);
+
+AVSC_API(AVS_VideoFrame *, avs_subframe)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height);
+// The returned video frame must be be released
+
+AVSC_API(int, avs_set_memory_max)(AVS_ScriptEnvironment *, int mem);
+
+AVSC_API(int, avs_set_working_dir)(AVS_ScriptEnvironment *, const char * newdir);
+
+// avisynth.dll exports this; it's a way to use it as a library, without
+// writing an AVS script or without going through AVIFile.
+AVSC_API(AVS_ScriptEnvironment *, avs_create_script_environment)(int version);
+#if defined __cplusplus
+}
+#endif // __cplusplus
+
+// this symbol is the entry point for the plugin and must
+// be defined
+AVSC_EXPORT
+const char * AVSC_CC avisynth_c_plugin_init(AVS_ScriptEnvironment* env);
+
+
+#if defined __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+AVSC_API(void, avs_delete_script_environment)(AVS_ScriptEnvironment *);
+
+
+AVSC_API(AVS_VideoFrame *, avs_subframe_planar)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height, int rel_offsetU, int rel_offsetV, int new_pitchUV);
+// The returned video frame must be be released
+#if defined __cplusplus
+}
+#endif // __cplusplus
+
+#endif //__AVXSYNTH_C__

compat/avisynth/windowsPorts/basicDataTypeConversions.h

@@ -0,0 +1,85 @@
+#ifndef __DATA_TYPE_CONVERSIONS_H__
+#define __DATA_TYPE_CONVERSIONS_H__
+
+#include <stdint.h>
+#include <wchar.h>
+
+#ifdef __cplusplus
+namespace avxsynth {
+#endif // __cplusplus
+
+typedef int64_t __int64;
+typedef int32_t __int32;
+#ifdef __cplusplus
+typedef bool BOOL;
+#else
+typedef uint32_t BOOL;
+#endif // __cplusplus
+typedef void* HMODULE;
+typedef void* LPVOID;
+typedef void* PVOID;
+typedef PVOID HANDLE;
+typedef HANDLE HWND;
+typedef HANDLE HINSTANCE;
+typedef void* HDC;
+typedef void* HBITMAP;
+typedef void* HICON;
+typedef void* HFONT;
+typedef void* HGDIOBJ;
+typedef void* HBRUSH;
+typedef void* HMMIO;
+typedef void* HACMSTREAM;
+typedef void* HACMDRIVER;
+typedef void* HIC;
+typedef void* HACMOBJ;
+typedef HACMSTREAM* LPHACMSTREAM;
+typedef void* HACMDRIVERID;
+typedef void* LPHACMDRIVER;
+typedef unsigned char BYTE;
+typedef BYTE* LPBYTE;
+typedef char TCHAR;
+typedef TCHAR* LPTSTR;
+typedef const TCHAR* LPCTSTR;
+typedef char* LPSTR;
+typedef LPSTR LPOLESTR;
+typedef const char* LPCSTR;
+typedef LPCSTR LPCOLESTR;
+typedef wchar_t WCHAR;
+typedef unsigned short WORD;
+typedef unsigned int UINT;
+typedef UINT MMRESULT;
+typedef uint32_t DWORD;
+typedef DWORD COLORREF;
+typedef DWORD FOURCC;
+typedef DWORD HRESULT;
+typedef DWORD* LPDWORD;
+typedef DWORD* DWORD_PTR;
+typedef int32_t LONG;
+typedef int32_t* LONG_PTR;
+typedef LONG_PTR LRESULT;
+typedef uint32_t ULONG;
+typedef uint32_t* ULONG_PTR;
+//typedef __int64_t intptr_t;
+typedef uint64_t _fsize_t;
+
+
+//
+// Structures
+//
+
+typedef struct _GUID {
+  DWORD Data1;
+  WORD  Data2;
+  WORD  Data3;
+  BYTE  Data4[8];
+} GUID;
+
+typedef GUID REFIID;
+typedef GUID CLSID;
+typedef CLSID* LPCLSID;
+typedef GUID IID;
+
+#ifdef __cplusplus
+}; // namespace avxsynth
+#endif // __cplusplus
+#endif //  __DATA_TYPE_CONVERSIONS_H__

compat/avisynth/windowsPorts/windows2linux.h

@@ -0,0 +1,77 @@
+#ifndef __WINDOWS2LINUX_H__
+#define __WINDOWS2LINUX_H__
+
+/*
+ * LINUX SPECIFIC DEFINITIONS
+*/
+//
+// Data types conversions
+//
+#include <stdlib.h>
+#include <string.h>
+#include "basicDataTypeConversions.h"
+
+#ifdef __cplusplus
+namespace avxsynth {
+#endif // __cplusplus
+//
+// purposefully define the following MSFT definitions
+// to mean nothing (as they do not mean anything on Linux)
+//
+#define __stdcall
+#define __cdecl
+#define noreturn
+#define __declspec(x)
+#define STDAPI       extern "C" HRESULT
+#define STDMETHODIMP HRESULT __stdcall
+#define STDMETHODIMP_(x) x __stdcall
+
+#define STDMETHOD(x)    virtual HRESULT x
+#define STDMETHOD_(a, x) virtual a x
+
+#ifndef TRUE
+#define TRUE  true
+#endif
+
+#ifndef FALSE
+#define FALSE false
+#endif
+
+#define S_OK                (0x00000000)
+#define S_FALSE             (0x00000001)
+#define E_NOINTERFACE       (0X80004002)
+#define E_POINTER           (0x80004003)
+#define E_FAIL              (0x80004005)
+#define E_OUTOFMEMORY       (0x8007000E)
+
+#define INVALID_HANDLE_VALUE    ((HANDLE)((LONG_PTR)-1))
+#define FAILED(hr)              ((hr) & 0x80000000)
+#define SUCCEEDED(hr)           (!FAILED(hr))
+
+
+//
+// Functions
+//
+#define MAKEDWORD(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
+#define MAKEWORD(a,b) (((a) << 8) | (b))
+
+#define lstrlen                             strlen
+#define lstrcpy                             strcpy
+#define lstrcmpi                            strcasecmp
+#define _stricmp                            strcasecmp
+#define InterlockedIncrement(x)             __sync_fetch_and_add((x), 1)
+#define InterlockedDecrement(x)             __sync_fetch_and_sub((x), 1)
+// Windows uses (new, old) ordering but GCC has (old, new)
+#define InterlockedCompareExchange(x,y,z)   __sync_val_compare_and_swap(x,z,y)
+
+#define UInt32x32To64(a, b)                 ( (uint64_t) ( ((uint64_t)((uint32_t)(a))) * ((uint32_t)(b))  ) )
+#define Int64ShrlMod32(a, b)                ( (uint64_t) ( (uint64_t)(a) >> (b) ) )
+#define Int32x32To64(a, b)                  ((__int64)(((__int64)((long)(a))) * ((long)(b))))
+
+#define MulDiv(nNumber, nNumerator, nDenominator)   (int32_t) (((int64_t) (nNumber) * (int64_t) (nNumerator) + (int64_t) ((nDenominator)/2)) / (int64_t) (nDenominator))
+
+#ifdef __cplusplus
+}; // namespace avxsynth
+#endif // __cplusplus
+
+#endif //  __WINDOWS2LINUX_H__

compat/cuda/cuda_runtime.h

@@ -1,192 +0,0 @@
-/*
- * Minimum CUDA compatibility definitions header
- *
- * Copyright (c) 2019 rcombs
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef COMPAT_CUDA_CUDA_RUNTIME_H
-#define COMPAT_CUDA_CUDA_RUNTIME_H
-
-// Common macros
-#define __global__ __attribute__((global))
-#define __device__ __attribute__((device))
-#define __device_builtin__ __attribute__((device_builtin))
-#define __align__(N) __attribute__((aligned(N)))
-#define __inline__ __inline__ __attribute__((always_inline))
-
-#define max(a, b) ((a) > (b) ? (a) : (b))
-#define min(a, b) ((a) < (b) ? (a) : (b))
-#define abs(x) ((x) < 0 ? -(x) : (x))
-
-#define atomicAdd(a, b) (__atomic_fetch_add(a, b, __ATOMIC_SEQ_CST))
-
-// Basic typedefs
-typedef __device_builtin__ unsigned long long cudaTextureObject_t;
-
-typedef struct __device_builtin__ __align__(2) uchar2
-{
-    unsigned char x, y;
-} uchar2;
-
-typedef struct __device_builtin__ __align__(4) ushort2
-{
-    unsigned short x, y;
-} ushort2;
-
-typedef struct __device_builtin__ __align__(8) float2
-{
-    float x, y;
-} float2;
-
-typedef struct __device_builtin__ __align__(8) int2
-{
-    int x, y;
-} int2;
-
-typedef struct __device_builtin__ uint3
-{
-    unsigned int x, y, z;
-} uint3;
-
-typedef struct uint3 dim3;
-
-typedef struct __device_builtin__ __align__(4) uchar4
-{
-    unsigned char x, y, z, w;
-} uchar4;
-
-typedef struct __device_builtin__ __align__(8) ushort4
-{
-    unsigned short x, y, z, w;
-} ushort4;
-
-typedef struct __device_builtin__ __align__(16) int4
-{
-    int x, y, z, w;
-} int4;
-
-typedef struct __device_builtin__ __align__(16) float4
-{
-    float x, y, z, w;
-} float4;
-
-// Accessors for special registers
-#define GETCOMP(reg, comp) \
-    asm("mov.u32 %0, %%" #reg "." #comp ";" : "=r"(tmp)); \
-    ret.comp = tmp;
-
-#define GET(name, reg) static inline __device__ uint3 name() {\
-    uint3 ret; \
-    unsigned tmp; \
-    GETCOMP(reg, x) \
-    GETCOMP(reg, y) \
-    GETCOMP(reg, z) \
-    return ret; \
-}
-
-GET(getBlockIdx, ctaid)
-GET(getBlockDim, ntid)
-GET(getThreadIdx, tid)
-
-// Instead of externs for these registers, we turn access to them into calls into trivial ASM
-#define blockIdx (getBlockIdx())
-#define blockDim (getBlockDim())
-#define threadIdx (getThreadIdx())
-
-// Basic initializers (simple macros rather than inline functions)
-#define make_int2(a, b) ((int2){.x = a, .y = b})
-#define make_uchar2(a, b) ((uchar2){.x = a, .y = b})
-#define make_ushort2(a, b) ((ushort2){.x = a, .y = b})
-#define make_float2(a, b) ((float2){.x = a, .y = b})
-#define make_int4(a, b, c, d) ((int4){.x = a, .y = b, .z = c, .w = d})
-#define make_uchar4(a, b, c, d) ((uchar4){.x = a, .y = b, .z = c, .w = d})
-#define make_ushort4(a, b, c, d) ((ushort4){.x = a, .y = b, .z = c, .w = d})
-#define make_float4(a, b, c, d) ((float4){.x = a, .y = b, .z = c, .w = d})
-
-// Conversions from the tex instruction's 4-register output to various types
-#define TEX2D(type, ret) static inline __device__ void conv(type* out, unsigned a, unsigned b, unsigned c, unsigned d) {*out = (ret);}
-
-TEX2D(unsigned char, a & 0xFF)
-TEX2D(unsigned short, a & 0xFFFF)
-TEX2D(float, a)
-TEX2D(uchar2, make_uchar2(a & 0xFF, b & 0xFF))
-TEX2D(ushort2, make_ushort2(a & 0xFFFF, b & 0xFFFF))
-TEX2D(float2, make_float2(a, b))
-TEX2D(uchar4, make_uchar4(a & 0xFF, b & 0xFF, c & 0xFF, d & 0xFF))
-TEX2D(ushort4, make_ushort4(a & 0xFFFF, b & 0xFFFF, c & 0xFFFF, d & 0xFFFF))
-TEX2D(float4, make_float4(a, b, c, d))
-
-// Template calling tex instruction and converting the output to the selected type
-template<typename T>
-inline __device__ T tex2D(cudaTextureObject_t texObject, float x, float y)
-{
-  T ret;
-  unsigned ret1, ret2, ret3, ret4;
-  asm("tex.2d.v4.u32.f32 {%0, %1, %2, %3}, [%4, {%5, %6}];" :
-      "=r"(ret1), "=r"(ret2), "=r"(ret3), "=r"(ret4) :
-      "l"(texObject), "f"(x), "f"(y));
-  conv(&ret, ret1, ret2, ret3, ret4);
-  return ret;
-}
-
-template<>
-inline __device__ float4 tex2D<float4>(cudaTextureObject_t texObject, float x, float y)
-{
-    float4 ret;
-    asm("tex.2d.v4.f32.f32 {%0, %1, %2, %3}, [%4, {%5, %6}];" :
-        "=r"(ret.x), "=r"(ret.y), "=r"(ret.z), "=r"(ret.w) :
-        "l"(texObject), "f"(x), "f"(y));
-    return ret;
-}
-
-template<>
-inline __device__ float tex2D<float>(cudaTextureObject_t texObject, float x, float y)
-{
-    return tex2D<float4>(texObject, x, y).x;
-}
-
-template<>
-inline __device__ float2 tex2D<float2>(cudaTextureObject_t texObject, float x, float y)
-{
-    float4 ret = tex2D<float4>(texObject, x, y);
-    return make_float2(ret.x, ret.y);
-}
-
-// Math helper functions
-static inline __device__ float floorf(float a) { return __builtin_floorf(a); }
-static inline __device__ float floor(float a) { return __builtin_floorf(a); }
-static inline __device__ double floor(double a) { return __builtin_floor(a); }
-static inline __device__ float ceilf(float a) { return __builtin_ceilf(a); }
-static inline __device__ float ceil(float a) { return __builtin_ceilf(a); }
-static inline __device__ double ceil(double a) { return __builtin_ceil(a); }
-static inline __device__ float truncf(float a) { return __builtin_truncf(a); }
-static inline __device__ float trunc(float a) { return __builtin_truncf(a); }
-static inline __device__ double trunc(double a) { return __builtin_trunc(a); }
-static inline __device__ float fabsf(float a) { return __builtin_fabsf(a); }
-static inline __device__ float fabs(float a) { return __builtin_fabsf(a); }
-static inline __device__ double fabs(double a) { return __builtin_fabs(a); }
-static inline __device__ float sqrtf(float a) { return __builtin_sqrtf(a); }
-
-static inline __device__ float __saturatef(float a) { return __nvvm_saturate_f(a); }
-static inline __device__ float __sinf(float a) { return __nvvm_sin_approx_f(a); }
-static inline __device__ float __cosf(float a) { return __nvvm_cos_approx_f(a); }
-static inline __device__ float __expf(float a) { return __nvvm_ex2_approx_f(a * (float)__builtin_log2(__builtin_exp(1))); }
-static inline __device__ float __powf(float a, float b) { return __nvvm_ex2_approx_f(__nvvm_lg2_approx_f(a) * b); }
-
-#endif /* COMPAT_CUDA_CUDA_RUNTIME_H */

compat/cuda/dynlink_cuda.h

@@ -0,0 +1,97 @@
+/*
+ * This copyright notice applies to this header file only:
+ *
+ * Copyright (c) 2016
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the software, and to permit persons to whom the
+ * software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#if !defined(AV_COMPAT_DYNLINK_CUDA_H) && !defined(CUDA_VERSION)
+#define AV_COMPAT_DYNLINK_CUDA_H
+
+#include <stddef.h>
+
+#define CUDA_VERSION 7050
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+#define CUDAAPI __stdcall
+#else
+#define CUDAAPI
+#endif
+
+#define CU_CTX_SCHED_BLOCKING_SYNC 4
+
+typedef int CUdevice;
+typedef void* CUarray;
+typedef void* CUcontext;
+#if defined(__x86_64) || defined(AMD64) || defined(_M_AMD64)
+typedef unsigned long long CUdeviceptr;
+#else
+typedef unsigned int CUdeviceptr;
+#endif
+
+typedef enum cudaError_enum {
+    CUDA_SUCCESS = 0
+} CUresult;
+
+typedef enum CUmemorytype_enum {
+    CU_MEMORYTYPE_HOST = 1,
+    CU_MEMORYTYPE_DEVICE = 2
+} CUmemorytype;
+
+typedef struct CUDA_MEMCPY2D_st {
+    size_t srcXInBytes;
+    size_t srcY;
+    CUmemorytype srcMemoryType;
+    const void *srcHost;
+    CUdeviceptr srcDevice;
+    CUarray srcArray;
+    size_t srcPitch;
+
+    size_t dstXInBytes;
+    size_t dstY;
+    CUmemorytype dstMemoryType;
+    void *dstHost;
+    CUdeviceptr dstDevice;
+    CUarray dstArray;
+    size_t dstPitch;
+
+    size_t WidthInBytes;
+    size_t Height;
+} CUDA_MEMCPY2D;
+
+typedef CUresult CUDAAPI tcuInit(unsigned int Flags);
+typedef CUresult CUDAAPI tcuDeviceGetCount(int *count);
+typedef CUresult CUDAAPI tcuDeviceGet(CUdevice *device, int ordinal);
+typedef CUresult CUDAAPI tcuDeviceGetName(char *name, int len, CUdevice dev);
+typedef CUresult CUDAAPI tcuDeviceComputeCapability(int *major, int *minor, CUdevice dev);
+typedef CUresult CUDAAPI tcuCtxCreate_v2(CUcontext *pctx, unsigned int flags, CUdevice dev);
+typedef CUresult CUDAAPI tcuCtxPushCurrent_v2(CUcontext *pctx);
+typedef CUresult CUDAAPI tcuCtxPopCurrent_v2(CUcontext *pctx);
+typedef CUresult CUDAAPI tcuCtxDestroy_v2(CUcontext ctx);
+typedef CUresult CUDAAPI tcuMemAlloc_v2(CUdeviceptr *dptr, size_t bytesize);
+typedef CUresult CUDAAPI tcuMemFree_v2(CUdeviceptr dptr);
+typedef CUresult CUDAAPI tcuMemcpy2D_v2(const CUDA_MEMCPY2D *pcopy);
+typedef CUresult CUDAAPI tcuGetErrorName(CUresult error, const char** pstr);
+typedef CUresult CUDAAPI tcuGetErrorString(CUresult error, const char** pstr);
+
+#endif

compat/cuda/dynlink_cuviddec.h

@@ -0,0 +1,815 @@
+/*
+ * This copyright notice applies to this header file only:
+ *
+ * Copyright (c) 2010-2016 NVIDIA Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the software, and to permit persons to whom the
+ * software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file cuviddec.h
+ * NvCuvid API provides Video Decoding interface to NVIDIA GPU devices.
+ * \date 2015-2016
+ * This file contains constants, structure definitions and function prototypes used for decoding.
+ */
+
+#if !defined(__CUDA_VIDEO_H__)
+#define __CUDA_VIDEO_H__
+
+#if defined(__x86_64) || defined(AMD64) || defined(_M_AMD64)
+#if (CUDA_VERSION >= 3020) && (!defined(CUDA_FORCE_API_VERSION) || (CUDA_FORCE_API_VERSION >= 3020))
+#define __CUVID_DEVPTR64
+#endif
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif /* __cplusplus */
+
+#if defined(__CYGWIN__)
+typedef unsigned int tcu_ulong;
+#else
+typedef unsigned long tcu_ulong;
+#endif
+
+typedef void *CUvideodecoder;
+typedef struct _CUcontextlock_st *CUvideoctxlock;
+
+/**
+ * \addtogroup VIDEO_DECODER Video Decoder
+ * @{
+ */
+
+/*!
+ * \enum cudaVideoCodec
+ * Video Codec Enums
+ */
+typedef enum cudaVideoCodec_enum {
+    cudaVideoCodec_MPEG1=0,                 /**<  MPEG1   */
+    cudaVideoCodec_MPEG2,                   /**<  MPEG2  */
+    cudaVideoCodec_MPEG4,                   /**<  MPEG4   */
+    cudaVideoCodec_VC1,                     /**<  VC1   */
+    cudaVideoCodec_H264,                    /**<  H264   */
+    cudaVideoCodec_JPEG,                    /**<  JPEG   */
+    cudaVideoCodec_H264_SVC,                /**<  H264-SVC   */
+    cudaVideoCodec_H264_MVC,                /**<  H264-MVC   */
+    cudaVideoCodec_HEVC,                    /**<  HEVC   */
+    cudaVideoCodec_VP8,                     /**<  VP8   */
+    cudaVideoCodec_VP9,                     /**<  VP9   */
+    cudaVideoCodec_NumCodecs,               /**<  Max COdecs   */
+    // Uncompressed YUV
+    cudaVideoCodec_YUV420 = (('I'<<24)|('Y'<<16)|('U'<<8)|('V')),   /**< Y,U,V (4:2:0)  */
+    cudaVideoCodec_YV12   = (('Y'<<24)|('V'<<16)|('1'<<8)|('2')),   /**< Y,V,U (4:2:0)  */
+    cudaVideoCodec_NV12   = (('N'<<24)|('V'<<16)|('1'<<8)|('2')),   /**< Y,UV  (4:2:0)  */
+    cudaVideoCodec_YUYV   = (('Y'<<24)|('U'<<16)|('Y'<<8)|('V')),   /**< YUYV/YUY2 (4:2:2)  */
+    cudaVideoCodec_UYVY   = (('U'<<24)|('Y'<<16)|('V'<<8)|('Y'))    /**< UYVY (4:2:2)  */
+} cudaVideoCodec;
+
+/*!
+ * \enum cudaVideoSurfaceFormat
+ * Video Surface Formats Enums
+ */
+typedef enum cudaVideoSurfaceFormat_enum {
+    cudaVideoSurfaceFormat_NV12=0,      /**< NV12  */
+    cudaVideoSurfaceFormat_P016=1       /**< P016  */
+} cudaVideoSurfaceFormat;
+
+/*!
+ * \enum cudaVideoDeinterlaceMode
+ * Deinterlacing Modes Enums
+ */
+typedef enum cudaVideoDeinterlaceMode_enum {
+    cudaVideoDeinterlaceMode_Weave=0,   /**< Weave both fields (no deinterlacing) */
+    cudaVideoDeinterlaceMode_Bob,       /**< Drop one field  */
+    cudaVideoDeinterlaceMode_Adaptive   /**< Adaptive deinterlacing  */
+} cudaVideoDeinterlaceMode;
+
+/*!
+ * \enum cudaVideoChromaFormat
+ * Chroma Formats Enums
+ */
+typedef enum cudaVideoChromaFormat_enum {
+    cudaVideoChromaFormat_Monochrome=0,  /**< MonoChrome */
+    cudaVideoChromaFormat_420,           /**< 4:2:0 */
+    cudaVideoChromaFormat_422,           /**< 4:2:2 */
+    cudaVideoChromaFormat_444            /**< 4:4:4 */
+} cudaVideoChromaFormat;
+
+/*!
+ * \enum cudaVideoCreateFlags
+ * Decoder Flags Enums
+ */
+typedef enum cudaVideoCreateFlags_enum {
+    cudaVideoCreate_Default = 0x00,     /**< Default operation mode: use dedicated video engines */
+    cudaVideoCreate_PreferCUDA = 0x01,  /**< Use a CUDA-based decoder if faster than dedicated engines (requires a valid vidLock object for multi-threading) */
+    cudaVideoCreate_PreferDXVA = 0x02,  /**< Go through DXVA internally if possible (requires D3D9 interop) */
+    cudaVideoCreate_PreferCUVID = 0x04  /**< Use dedicated video engines directly */
+} cudaVideoCreateFlags;
+
+/*!
+ * \struct CUVIDDECODECREATEINFO
+ * Struct used in create decoder
+ */
+typedef struct _CUVIDDECODECREATEINFO
+{
+    tcu_ulong ulWidth;                  /**< Coded Sequence Width */
+    tcu_ulong ulHeight;                 /**< Coded Sequence Height */
+    tcu_ulong ulNumDecodeSurfaces;      /**< Maximum number of internal decode surfaces */
+    cudaVideoCodec CodecType;           /**< cudaVideoCodec_XXX */
+    cudaVideoChromaFormat ChromaFormat; /**< cudaVideoChromaFormat_XXX (only 4:2:0 is currently supported) */
+    tcu_ulong ulCreationFlags;          /**< Decoder creation flags (cudaVideoCreateFlags_XXX) */
+    tcu_ulong bitDepthMinus8;
+    tcu_ulong Reserved1[4];             /**< Reserved for future use - set to zero */
+    /**
+    * area of the frame that should be displayed
+    */
+    struct {
+        short left;
+        short top;
+        short right;
+        short bottom;
+    } display_area;
+
+    cudaVideoSurfaceFormat OutputFormat;       /**< cudaVideoSurfaceFormat_XXX */
+    cudaVideoDeinterlaceMode DeinterlaceMode;  /**< cudaVideoDeinterlaceMode_XXX */
+    tcu_ulong ulTargetWidth;                   /**< Post-processed Output Width (Should be aligned to 2) */
+    tcu_ulong ulTargetHeight;                  /**< Post-processed Output Height (Should be aligbed to 2) */
+    tcu_ulong ulNumOutputSurfaces;             /**< Maximum number of output surfaces simultaneously mapped */
+    CUvideoctxlock vidLock;                    /**< If non-NULL, context lock used for synchronizing ownership of the cuda context */
+    /**
+    * target rectangle in the output frame (for aspect ratio conversion)
+    * if a null rectangle is specified, {0,0,ulTargetWidth,ulTargetHeight} will be used
+    */
+    struct {
+        short left;
+        short top;
+        short right;
+        short bottom;
+    } target_rect;
+    tcu_ulong Reserved2[5];                    /**< Reserved for future use - set to zero */
+} CUVIDDECODECREATEINFO;
+
+/*!
+ * \struct CUVIDH264DPBENTRY
+ * H.264 DPB Entry
+ */
+typedef struct _CUVIDH264DPBENTRY
+{
+    int PicIdx;                 /**< picture index of reference frame */
+    int FrameIdx;               /**< frame_num(short-term) or LongTermFrameIdx(long-term) */
+    int is_long_term;           /**< 0=short term reference, 1=long term reference */
+    int not_existing;           /**< non-existing reference frame (corresponding PicIdx should be set to -1) */
+    int used_for_reference;     /**< 0=unused, 1=top_field, 2=bottom_field, 3=both_fields */
+    int FieldOrderCnt[2];       /**< field order count of top and bottom fields */
+} CUVIDH264DPBENTRY;
+
+/*!
+ * \struct CUVIDH264MVCEXT
+ * H.264 MVC Picture Parameters Ext
+ */
+typedef struct _CUVIDH264MVCEXT
+{
+    int num_views_minus1;
+    int view_id;
+    unsigned char inter_view_flag;
+    unsigned char num_inter_view_refs_l0;
+    unsigned char num_inter_view_refs_l1;
+    unsigned char MVCReserved8Bits;
+    int InterViewRefsL0[16];
+    int InterViewRefsL1[16];
+} CUVIDH264MVCEXT;
+
+/*!
+ * \struct CUVIDH264SVCEXT
+ * H.264 SVC Picture Parameters Ext
+ */
+typedef struct _CUVIDH264SVCEXT
+{
+    unsigned char profile_idc;
+    unsigned char level_idc;
+    unsigned char DQId;
+    unsigned char DQIdMax;
+    unsigned char disable_inter_layer_deblocking_filter_idc;
+    unsigned char ref_layer_chroma_phase_y_plus1;
+    signed char   inter_layer_slice_alpha_c0_offset_div2;
+    signed char   inter_layer_slice_beta_offset_div2;
+
+    unsigned short DPBEntryValidFlag;
+    unsigned char inter_layer_deblocking_filter_control_present_flag;
+    unsigned char extended_spatial_scalability_idc;
+    unsigned char adaptive_tcoeff_level_prediction_flag;
+    unsigned char slice_header_restriction_flag;
+    unsigned char chroma_phase_x_plus1_flag;
+    unsigned char chroma_phase_y_plus1;
+
+    unsigned char tcoeff_level_prediction_flag;
+    unsigned char constrained_intra_resampling_flag;
+    unsigned char ref_layer_chroma_phase_x_plus1_flag;
+    unsigned char store_ref_base_pic_flag;
+    unsigned char Reserved8BitsA;
+    unsigned char Reserved8BitsB;
+    // For the 4 scaled_ref_layer_XX fields below,
+    // if (extended_spatial_scalability_idc == 1), SPS field, G.7.3.2.1.4, add prefix "seq_"
+    // if (extended_spatial_scalability_idc == 2), SLH field, G.7.3.3.4,
+    short scaled_ref_layer_left_offset;
+    short scaled_ref_layer_top_offset;
+    short scaled_ref_layer_right_offset;
+    short scaled_ref_layer_bottom_offset;
+    unsigned short Reserved16Bits;
+    struct _CUVIDPICPARAMS *pNextLayer; /**< Points to the picparams for the next layer to be decoded. Linked list ends at the target layer. */
+    int bRefBaseLayer;                  /**< whether to store ref base pic */
+} CUVIDH264SVCEXT;
+
+/*!
+ * \struct CUVIDH264PICPARAMS
+ * H.264 Picture Parameters
+ */
+typedef struct _CUVIDH264PICPARAMS
+{
+    // SPS
+    int log2_max_frame_num_minus4;
+    int pic_order_cnt_type;
+    int log2_max_pic_order_cnt_lsb_minus4;
+    int delta_pic_order_always_zero_flag;
+    int frame_mbs_only_flag;
+    int direct_8x8_inference_flag;
+    int num_ref_frames;             // NOTE: shall meet level 4.1 restrictions
+    unsigned char residual_colour_transform_flag;
+    unsigned char bit_depth_luma_minus8;    // Must be 0 (only 8-bit supported)
+    unsigned char bit_depth_chroma_minus8;  // Must be 0 (only 8-bit supported)
+    unsigned char qpprime_y_zero_transform_bypass_flag;
+    // PPS
+    int entropy_coding_mode_flag;
+    int pic_order_present_flag;
+    int num_ref_idx_l0_active_minus1;
+    int num_ref_idx_l1_active_minus1;
+    int weighted_pred_flag;
+    int weighted_bipred_idc;
+    int pic_init_qp_minus26;
+    int deblocking_filter_control_present_flag;
+    int redundant_pic_cnt_present_flag;
+    int transform_8x8_mode_flag;
+    int MbaffFrameFlag;
+    int constrained_intra_pred_flag;
+    int chroma_qp_index_offset;
+    int second_chroma_qp_index_offset;
+    int ref_pic_flag;
+    int frame_num;
+    int CurrFieldOrderCnt[2];
+    // DPB
+    CUVIDH264DPBENTRY dpb[16];          // List of reference frames within the DPB
+    // Quantization Matrices (raster-order)
+    unsigned char WeightScale4x4[6][16];
+    unsigned char WeightScale8x8[2][64];
+    // FMO/ASO
+    unsigned char fmo_aso_enable;
+    unsigned char num_slice_groups_minus1;
+    unsigned char slice_group_map_type;
+    signed char pic_init_qs_minus26;
+    unsigned int slice_group_change_rate_minus1;
+    union
+    {
+        unsigned long long slice_group_map_addr;
+        const unsigned char *pMb2SliceGroupMap;
+    } fmo;
+    unsigned int  Reserved[12];
+    // SVC/MVC
+    union
+    {
+        CUVIDH264MVCEXT mvcext;
+        CUVIDH264SVCEXT svcext;
+    } svcmvc;
+} CUVIDH264PICPARAMS;
+
+
+/*!
+ * \struct CUVIDMPEG2PICPARAMS
+ * MPEG-2 Picture Parameters
+ */
+typedef struct _CUVIDMPEG2PICPARAMS
+{
+    int ForwardRefIdx;          // Picture index of forward reference (P/B-frames)
+    int BackwardRefIdx;         // Picture index of backward reference (B-frames)
+    int picture_coding_type;
+    int full_pel_forward_vector;
+    int full_pel_backward_vector;
+    int f_code[2][2];
+    int intra_dc_precision;
+    int frame_pred_frame_dct;
+    int concealment_motion_vectors;
+    int q_scale_type;
+    int intra_vlc_format;
+    int alternate_scan;
+    int top_field_first;
+    // Quantization matrices (raster order)
+    unsigned char QuantMatrixIntra[64];
+    unsigned char QuantMatrixInter[64];
+} CUVIDMPEG2PICPARAMS;
+
+////////////////////////////////////////////////////////////////////////////////////////////////
+//
+// MPEG-4 Picture Parameters
+//
+
+// MPEG-4 has VOP types instead of Picture types
+#define I_VOP 0
+#define P_VOP 1
+#define B_VOP 2
+#define S_VOP 3
+
+/*!
+ * \struct CUVIDMPEG4PICPARAMS
+ * MPEG-4 Picture Parameters
+ */
+typedef struct _CUVIDMPEG4PICPARAMS
+{
+    int ForwardRefIdx;          // Picture index of forward reference (P/B-frames)
+    int BackwardRefIdx;         // Picture index of backward reference (B-frames)
+    // VOL
+    int video_object_layer_width;
+    int video_object_layer_height;
+    int vop_time_increment_bitcount;
+    int top_field_first;
+    int resync_marker_disable;
+    int quant_type;
+    int quarter_sample;
+    int short_video_header;
+    int divx_flags;
+    // VOP
+    int vop_coding_type;
+    int vop_coded;
+    int vop_rounding_type;
+    int alternate_vertical_scan_flag;
+    int interlaced;
+    int vop_fcode_forward;
+    int vop_fcode_backward;
+    int trd[2];
+    int trb[2];
+    // Quantization matrices (raster order)
+    unsigned char QuantMatrixIntra[64];
+    unsigned char QuantMatrixInter[64];
+    int gmc_enabled;
+} CUVIDMPEG4PICPARAMS;
+
+/*!
+ * \struct CUVIDVC1PICPARAMS
+ * VC1 Picture Parameters
+ */
+typedef struct _CUVIDVC1PICPARAMS
+{
+    int ForwardRefIdx;      /**< Picture index of forward reference (P/B-frames) */
+    int BackwardRefIdx;     /**< Picture index of backward reference (B-frames) */
+    int FrameWidth;         /**< Actual frame width */
+    int FrameHeight;        /**< Actual frame height */
+    // PICTURE
+    int intra_pic_flag;     /**< Set to 1 for I,BI frames */
+    int ref_pic_flag;       /**< Set to 1 for I,P frames */
+    int progressive_fcm;    /**< Progressive frame */
+    // SEQUENCE
+    int profile;
+    int postprocflag;
+    int pulldown;
+    int interlace;
+    int tfcntrflag;
+    int finterpflag;
+    int psf;
+    int multires;
+    int syncmarker;
+    int rangered;
+    int maxbframes;
+    // ENTRYPOINT
+    int panscan_flag;
+    int refdist_flag;
+    int extended_mv;
+    int dquant;
+    int vstransform;
+    int loopfilter;
+    int fastuvmc;
+    int overlap;
+    int quantizer;
+    int extended_dmv;
+    int range_mapy_flag;
+    int range_mapy;
+    int range_mapuv_flag;
+    int range_mapuv;
+    int rangeredfrm;    // range reduction state
+} CUVIDVC1PICPARAMS;
+
+/*!
+ * \struct CUVIDJPEGPICPARAMS
+ * JPEG Picture Parameters
+ */
+typedef struct _CUVIDJPEGPICPARAMS
+{
+    int Reserved;
+} CUVIDJPEGPICPARAMS;
+
+
+ /*!
+ * \struct CUVIDHEVCPICPARAMS
+ * HEVC Picture Parameters
+ */
+typedef struct _CUVIDHEVCPICPARAMS
+{
+    // sps
+    int pic_width_in_luma_samples;
+    int pic_height_in_luma_samples;
+    unsigned char log2_min_luma_coding_block_size_minus3;
+    unsigned char log2_diff_max_min_luma_coding_block_size;
+    unsigned char log2_min_transform_block_size_minus2;
+    unsigned char log2_diff_max_min_transform_block_size;
+    unsigned char pcm_enabled_flag;
+    unsigned char log2_min_pcm_luma_coding_block_size_minus3;
+    unsigned char log2_diff_max_min_pcm_luma_coding_block_size;
+    unsigned char pcm_sample_bit_depth_luma_minus1;
+
+    unsigned char pcm_sample_bit_depth_chroma_minus1;
+    unsigned char pcm_loop_filter_disabled_flag;
+    unsigned char strong_intra_smoothing_enabled_flag;
+    unsigned char max_transform_hierarchy_depth_intra;
+    unsigned char max_transform_hierarchy_depth_inter;
+    unsigned char amp_enabled_flag;
+    unsigned char separate_colour_plane_flag;
+    unsigned char log2_max_pic_order_cnt_lsb_minus4;
+
+    unsigned char num_short_term_ref_pic_sets;
+    unsigned char long_term_ref_pics_present_flag;
+    unsigned char num_long_term_ref_pics_sps;
+    unsigned char sps_temporal_mvp_enabled_flag;
+    unsigned char sample_adaptive_offset_enabled_flag;
+    unsigned char scaling_list_enable_flag;
+    unsigned char IrapPicFlag;
+    unsigned char IdrPicFlag;
+
+    unsigned char bit_depth_luma_minus8;
+    unsigned char bit_depth_chroma_minus8;
+    unsigned char reserved1[14];
+
+    // pps
+    unsigned char dependent_slice_segments_enabled_flag;
+    unsigned char slice_segment_header_extension_present_flag;
+    unsigned char sign_data_hiding_enabled_flag;
+    unsigned char cu_qp_delta_enabled_flag;
+    unsigned char diff_cu_qp_delta_depth;
+    signed char init_qp_minus26;
+    signed char pps_cb_qp_offset;
+    signed char pps_cr_qp_offset;
+
+    unsigned char constrained_intra_pred_flag;
+    unsigned char weighted_pred_flag;
+    unsigned char weighted_bipred_flag;
+    unsigned char transform_skip_enabled_flag;
+    unsigned char transquant_bypass_enabled_flag;
+    unsigned char entropy_coding_sync_enabled_flag;
+    unsigned char log2_parallel_merge_level_minus2;
+    unsigned char num_extra_slice_header_bits;
+
+    unsigned char loop_filter_across_tiles_enabled_flag;
+    unsigned char loop_filter_across_slices_enabled_flag;
+    unsigned char output_flag_present_flag;
+    unsigned char num_ref_idx_l0_default_active_minus1;
+    unsigned char num_ref_idx_l1_default_active_minus1;
+    unsigned char lists_modification_present_flag;
+    unsigned char cabac_init_present_flag;
+    unsigned char pps_slice_chroma_qp_offsets_present_flag;
+
+    unsigned char deblocking_filter_override_enabled_flag;
+    unsigned char pps_deblocking_filter_disabled_flag;
+    signed char pps_beta_offset_div2;
+    signed char pps_tc_offset_div2;
+    unsigned char tiles_enabled_flag;
+    unsigned char uniform_spacing_flag;
+    unsigned char num_tile_columns_minus1;
+    unsigned char num_tile_rows_minus1;
+
+    unsigned short column_width_minus1[21];
+    unsigned short row_height_minus1[21];
+    unsigned int reserved3[15];
+
+    // RefPicSets
+    int NumBitsForShortTermRPSInSlice;
+    int NumDeltaPocsOfRefRpsIdx;
+    int NumPocTotalCurr;
+    int NumPocStCurrBefore;
+    int NumPocStCurrAfter;
+    int NumPocLtCurr;
+    int CurrPicOrderCntVal;
+    int RefPicIdx[16];                  // [refpic] Indices of valid reference pictures (-1 if unused for reference)
+    int PicOrderCntVal[16];             // [refpic]
+    unsigned char IsLongTerm[16];       // [refpic] 0=not a long-term reference, 1=long-term reference
+    unsigned char RefPicSetStCurrBefore[8]; // [0..NumPocStCurrBefore-1] -> refpic (0..15)
+    unsigned char RefPicSetStCurrAfter[8];  // [0..NumPocStCurrAfter-1] -> refpic (0..15)
+    unsigned char RefPicSetLtCurr[8];       // [0..NumPocLtCurr-1] -> refpic (0..15)
+    unsigned char RefPicSetInterLayer0[8];
+    unsigned char RefPicSetInterLayer1[8];
+    unsigned int reserved4[12];
+
+    // scaling lists (diag order)
+    unsigned char ScalingList4x4[6][16];       // [matrixId][i]
+    unsigned char ScalingList8x8[6][64];       // [matrixId][i]
+    unsigned char ScalingList16x16[6][64];     // [matrixId][i]
+    unsigned char ScalingList32x32[2][64];     // [matrixId][i]
+    unsigned char ScalingListDCCoeff16x16[6];  // [matrixId]
+    unsigned char ScalingListDCCoeff32x32[2];  // [matrixId]
+} CUVIDHEVCPICPARAMS;
+
+
+/*!
+ * \struct CUVIDVP8PICPARAMS
+ * VP8 Picture Parameters
+ */
+typedef struct _CUVIDVP8PICPARAMS
+{
+    int width;
+    int height;
+    unsigned int first_partition_size;
+    //Frame Indexes
+    unsigned char LastRefIdx;
+    unsigned char GoldenRefIdx;
+    unsigned char AltRefIdx;
+    union {
+        struct {
+            unsigned char frame_type : 1;    /**< 0 = KEYFRAME, 1 = INTERFRAME  */
+            unsigned char version : 3;
+            unsigned char show_frame : 1;
+            unsigned char update_mb_segmentation_data : 1;    /**< Must be 0 if segmentation is not enabled */
+            unsigned char Reserved2Bits : 2;
+        };
+        unsigned char wFrameTagFlags;
+    } tagflags;
+    unsigned char Reserved1[4];
+    unsigned int  Reserved2[3];
+} CUVIDVP8PICPARAMS;
+
+/*!
+ * \struct CUVIDVP9PICPARAMS
+ * VP9 Picture Parameters
+ */
+typedef struct _CUVIDVP9PICPARAMS
+{
+    unsigned int width;
+    unsigned int height;
+
+    //Frame Indices
+    unsigned char LastRefIdx;
+    unsigned char GoldenRefIdx;
+    unsigned char AltRefIdx;
+    unsigned char colorSpace;
+
+    unsigned short profile : 3;
+    unsigned short frameContextIdx : 2;
+    unsigned short frameType : 1;
+    unsigned short showFrame : 1;
+    unsigned short errorResilient : 1;
+    unsigned short frameParallelDecoding : 1;
+    unsigned short subSamplingX : 1;
+    unsigned short subSamplingY : 1;
+    unsigned short intraOnly : 1;
+    unsigned short allow_high_precision_mv : 1;
+    unsigned short refreshEntropyProbs : 1;
+    unsigned short reserved2Bits : 2;
+
+    unsigned short reserved16Bits;
+
+    unsigned char  refFrameSignBias[4];
+
+    unsigned char bitDepthMinus8Luma;
+    unsigned char bitDepthMinus8Chroma;
+    unsigned char loopFilterLevel;
+    unsigned char loopFilterSharpness;
+
+    unsigned char modeRefLfEnabled;
+    unsigned char log2_tile_columns;
+    unsigned char log2_tile_rows;
+
+    unsigned char segmentEnabled : 1;
+    unsigned char segmentMapUpdate : 1;
+    unsigned char segmentMapTemporalUpdate : 1;
+    unsigned char segmentFeatureMode : 1;
+    unsigned char reserved4Bits : 4;
+
+
+    unsigned char segmentFeatureEnable[8][4];
+    short segmentFeatureData[8][4];
+    unsigned char mb_segment_tree_probs[7];
+    unsigned char segment_pred_probs[3];
+    unsigned char reservedSegment16Bits[2];
+
+    int qpYAc;
+    int qpYDc;
+    int qpChDc;
+    int qpChAc;
+
+    unsigned int activeRefIdx[3];
+    unsigned int resetFrameContext;
+    unsigned int mcomp_filter_type;
+    unsigned int mbRefLfDelta[4];
+    unsigned int mbModeLfDelta[2];
+    unsigned int frameTagSize;
+    unsigned int offsetToDctParts;
+    unsigned int reserved128Bits[4];
+
+} CUVIDVP9PICPARAMS;
+
+
+/*!
+ * \struct CUVIDPICPARAMS
+ * Picture Parameters for Decoding
+ */
+typedef struct _CUVIDPICPARAMS
+{
+    int PicWidthInMbs;                    /**< Coded Frame Size */
+    int FrameHeightInMbs;                 /**< Coded Frame Height */
+    int CurrPicIdx;                       /**< Output index of the current picture */
+    int field_pic_flag;                   /**< 0=frame picture, 1=field picture */
+    int bottom_field_flag;                /**< 0=top field, 1=bottom field (ignored if field_pic_flag=0) */
+    int second_field;                     /**< Second field of a complementary field pair */
+    // Bitstream data
+    unsigned int nBitstreamDataLen;        /**< Number of bytes in bitstream data buffer */
+    const unsigned char *pBitstreamData;   /**< Ptr to bitstream data for this picture (slice-layer) */
+    unsigned int nNumSlices;               /**< Number of slices in this picture */
+    const unsigned int *pSliceDataOffsets; /**< nNumSlices entries, contains offset of each slice within the bitstream data buffer */
+    int ref_pic_flag;                      /**< This picture is a reference picture */
+    int intra_pic_flag;                    /**< This picture is entirely intra coded */
+    unsigned int Reserved[30];             /**< Reserved for future use */
+    // Codec-specific data
+    union {
+        CUVIDMPEG2PICPARAMS mpeg2;         /**< Also used for MPEG-1 */
+        CUVIDH264PICPARAMS h264;
+        CUVIDVC1PICPARAMS vc1;
+        CUVIDMPEG4PICPARAMS mpeg4;
+        CUVIDJPEGPICPARAMS jpeg;
+        CUVIDHEVCPICPARAMS hevc;
+        CUVIDVP8PICPARAMS vp8;
+        CUVIDVP9PICPARAMS vp9;
+        unsigned int CodecReserved[1024];
+    } CodecSpecific;
+} CUVIDPICPARAMS;
+
+
+/*!
+ * \struct CUVIDPROCPARAMS
+ * Picture Parameters for Postprocessing
+ */
+typedef struct _CUVIDPROCPARAMS
+{
+    int progressive_frame;  /**< Input is progressive (deinterlace_mode will be ignored)  */
+    int second_field;       /**< Output the second field (ignored if deinterlace mode is Weave) */
+    int top_field_first;    /**< Input frame is top field first (1st field is top, 2nd field is bottom) */
+    int unpaired_field;     /**< Input only contains one field (2nd field is invalid) */
+    // The fields below are used for raw YUV input
+    unsigned int reserved_flags;        /**< Reserved for future use (set to zero) */
+    unsigned int reserved_zero;         /**< Reserved (set to zero) */
+    unsigned long long raw_input_dptr;  /**< Input CUdeviceptr for raw YUV extensions */
+    unsigned int raw_input_pitch;       /**< pitch in bytes of raw YUV input (should be aligned appropriately) */
+    unsigned int raw_input_format;      /**< Reserved for future use (set to zero) */
+    unsigned long long raw_output_dptr; /**< Reserved for future use (set to zero) */
+    unsigned int raw_output_pitch;      /**< Reserved for future use (set to zero) */
+    unsigned int Reserved[48];
+    void *Reserved3[3];
+} CUVIDPROCPARAMS;
+
+
+/**
+ *
+ * In order to minimize decode latencies, there should be always at least 2 pictures in the decode
+ * queue at any time, in order to make sure that all decode engines are always busy.
+ *
+ * Overall data flow:
+ *  - cuvidCreateDecoder(...)
+ *  For each picture:
+ *  - cuvidDecodePicture(N)
+ *  - cuvidMapVideoFrame(N-4)
+ *  - do some processing in cuda
+ *  - cuvidUnmapVideoFrame(N-4)
+ *  - cuvidDecodePicture(N+1)
+ *  - cuvidMapVideoFrame(N-3)
+ *    ...
+ *  - cuvidDestroyDecoder(...)
+ *
+ * NOTE:
+ * - When the cuda context is created from a D3D device, the D3D device must also be created
+ *   with the D3DCREATE_MULTITHREADED flag.
+ * - There is a limit to how many pictures can be mapped simultaneously (ulNumOutputSurfaces)
+ * - cuVidDecodePicture may block the calling thread if there are too many pictures pending
+ *   in the decode queue
+ */
+
+/**
+ * \fn CUresult CUDAAPI cuvidCreateDecoder(CUvideodecoder *phDecoder, CUVIDDECODECREATEINFO *pdci)
+ * Create the decoder object
+ */
+typedef CUresult CUDAAPI tcuvidCreateDecoder(CUvideodecoder *phDecoder, CUVIDDECODECREATEINFO *pdci);
+
+/**
+ * \fn CUresult CUDAAPI cuvidDestroyDecoder(CUvideodecoder hDecoder)
+ * Destroy the decoder object
+ */
+typedef CUresult CUDAAPI tcuvidDestroyDecoder(CUvideodecoder hDecoder);
+
+/**
+ * \fn CUresult CUDAAPI cuvidDecodePicture(CUvideodecoder hDecoder, CUVIDPICPARAMS *pPicParams)
+ * Decode a single picture (field or frame)
+ */
+typedef CUresult CUDAAPI tcuvidDecodePicture(CUvideodecoder hDecoder, CUVIDPICPARAMS *pPicParams);
+
+
+#if !defined(__CUVID_DEVPTR64) || defined(__CUVID_INTERNAL)
+/**
+ * \fn CUresult CUDAAPI cuvidMapVideoFrame(CUvideodecoder hDecoder, int nPicIdx, unsigned int *pDevPtr, unsigned int *pPitch, CUVIDPROCPARAMS *pVPP);
+ * Post-process and map a video frame for use in cuda
+ */
+typedef CUresult CUDAAPI tcuvidMapVideoFrame(CUvideodecoder hDecoder, int nPicIdx,
+                                             unsigned int *pDevPtr, unsigned int *pPitch,
+                                             CUVIDPROCPARAMS *pVPP);
+
+/**
+ * \fn CUresult CUDAAPI cuvidUnmapVideoFrame(CUvideodecoder hDecoder, unsigned int DevPtr)
+ * Unmap a previously mapped video frame
+ */
+typedef CUresult CUDAAPI tcuvidUnmapVideoFrame(CUvideodecoder hDecoder, unsigned int DevPtr);
+#endif
+
+#if defined(WIN64) || defined(_WIN64) || defined(__x86_64) || defined(AMD64) || defined(_M_AMD64)
+/**
+ * \fn CUresult CUDAAPI cuvidMapVideoFrame64(CUvideodecoder hDecoder, int nPicIdx, unsigned long long *pDevPtr, unsigned int *pPitch, CUVIDPROCPARAMS *pVPP);
+ * map a video frame
+ */
+typedef CUresult CUDAAPI tcuvidMapVideoFrame64(CUvideodecoder hDecoder, int nPicIdx, unsigned long long *pDevPtr,
+                                               unsigned int *pPitch, CUVIDPROCPARAMS *pVPP);
+
+/**
+ * \fn CUresult CUDAAPI cuvidUnmapVideoFrame64(CUvideodecoder hDecoder, unsigned long long DevPtr);
+ * Unmap a previously mapped video frame
+ */
+typedef CUresult CUDAAPI tcuvidUnmapVideoFrame64(CUvideodecoder hDecoder, unsigned long long DevPtr);
+
+#if defined(__CUVID_DEVPTR64) && !defined(__CUVID_INTERNAL)
+#define tcuvidMapVideoFrame      tcuvidMapVideoFrame64
+#define tcuvidUnmapVideoFrame    tcuvidUnmapVideoFrame64
+#endif
+#endif
+
+
+/**
+ *
+ * Context-locking: to facilitate multi-threaded implementations, the following 4 functions
+ * provide a simple mutex-style host synchronization. If a non-NULL context is specified
+ * in CUVIDDECODECREATEINFO, the codec library will acquire the mutex associated with the given
+ * context before making any cuda calls.
+ * A multi-threaded application could create a lock associated with a context handle so that
+ * multiple threads can safely share the same cuda context:
+ *  - use cuCtxPopCurrent immediately after context creation in order to create a 'floating' context
+ *    that can be passed to cuvidCtxLockCreate.
+ *  - When using a floating context, all cuda calls should only be made within a cuvidCtxLock/cuvidCtxUnlock section.
+ *
+ * NOTE: This is a safer alternative to cuCtxPushCurrent and cuCtxPopCurrent, and is not related to video
+ * decoder in any way (implemented as a critical section associated with cuCtx{Push|Pop}Current calls).
+*/
+
+/**
+ * \fn CUresult CUDAAPI cuvidCtxLockCreate(CUvideoctxlock *pLock, CUcontext ctx)
+ */
+typedef CUresult CUDAAPI tcuvidCtxLockCreate(CUvideoctxlock *pLock, CUcontext ctx);
+
+/**
+ * \fn CUresult CUDAAPI cuvidCtxLockDestroy(CUvideoctxlock lck)
+ */
+typedef CUresult CUDAAPI tcuvidCtxLockDestroy(CUvideoctxlock lck);
+
+/**
+ * \fn CUresult CUDAAPI cuvidCtxLock(CUvideoctxlock lck, unsigned int reserved_flags)
+ */
+typedef CUresult CUDAAPI tcuvidCtxLock(CUvideoctxlock lck, unsigned int reserved_flags);
+
+/**
+ * \fn CUresult CUDAAPI cuvidCtxUnlock(CUvideoctxlock lck, unsigned int reserved_flags)
+ */
+typedef CUresult CUDAAPI tcuvidCtxUnlock(CUvideoctxlock lck, unsigned int reserved_flags);
+
+/** @} */  /* End VIDEO_DECODER */
+
+#if defined(__cplusplus)
+}
+#endif /* __cplusplus */
+
+#endif // __CUDA_VIDEO_H__

compat/cuda/dynlink_loader.h

@@ -1,33 +1,254 @@
 /*
- * This file is part of FFmpeg.
+ * This copyright notice applies to this header file only:
  *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * Copyright (c) 2016
  *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the software, and to permit persons to whom the
+ * software is furnished to do so, subject to the following
+ * conditions:
  *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#ifndef COMPAT_CUDA_DYNLINK_LOADER_H
-#define COMPAT_CUDA_DYNLINK_LOADER_H
+#ifndef AV_COMPAT_CUDA_DYNLINK_LOADER_H
+#define AV_COMPAT_CUDA_DYNLINK_LOADER_H
 
-#include "libavutil/log.h"
+#include "compat/cuda/dynlink_cuda.h"
+#include "compat/cuda/dynlink_nvcuvid.h"
+#include "compat/nvenc/nvEncodeAPI.h"
 #include "compat/w32dlfcn.h"
 
-#define FFNV_LOAD_FUNC(path) dlopen((path), RTLD_LAZY)
-#define FFNV_SYM_FUNC(lib, sym) dlsym((lib), (sym))
-#define FFNV_FREE_FUNC(lib) dlclose(lib)
-#define FFNV_LOG_FUNC(logctx, msg, ...) av_log(logctx, AV_LOG_ERROR, msg,  __VA_ARGS__)
-#define FFNV_DEBUG_LOG_FUNC(logctx, msg, ...) av_log(logctx, AV_LOG_DEBUG, msg,  __VA_ARGS__)
+#include "libavutil/log.h"
+#include "libavutil/error.h"
 
-#include <ffnvcodec/dynlink_loader.h>
+#if defined(_WIN32)
+# define LIB_HANDLE HMODULE
+#else
+# define LIB_HANDLE void*
+#endif
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+# define CUDA_LIBNAME "nvcuda.dll"
+# define NVCUVID_LIBNAME "nvcuvid.dll"
+# if ARCH_X86_64
+#  define NVENC_LIBNAME "nvEncodeAPI64.dll"
+# else
+#  define NVENC_LIBNAME "nvEncodeAPI.dll"
+# endif
+#else
+# define CUDA_LIBNAME "libcuda.so.1"
+# define NVCUVID_LIBNAME "libnvcuvid.so.1"
+# define NVENC_LIBNAME "libnvidia-encode.so.1"
+#endif
+
+#define LOAD_LIBRARY(l, path)                                     \
+    do {                                                          \
+        if (!((l) = dlopen(path, RTLD_LAZY))) {                   \
+            av_log(NULL, AV_LOG_ERROR, "Cannot load %s\n", path); \
+            ret = AVERROR_UNKNOWN;                                \
+            goto error;                                           \
+        }                                                         \
+        av_log(NULL, AV_LOG_TRACE, "Loaded lib: %s\n", path);     \
+    } while (0)
+
+#define LOAD_SYMBOL(fun, symbol)                                    \
+    do {                                                            \
+        if (!((f->fun) = dlsym(f->lib, symbol))) {                  \
+            av_log(NULL, AV_LOG_ERROR, "Cannot load %s\n", symbol); \
+            ret = AVERROR_UNKNOWN;                                  \
+            goto error;                                             \
+        }                                                           \
+        av_log(NULL, AV_LOG_TRACE, "Loaded sym: %s\n", symbol);     \
+    } while (0)
+
+#define GENERIC_LOAD_FUNC_PREAMBLE(T, n, N)  \
+    T *f;                                    \
+    int ret;                                 \
+                                             \
+    n##_free_functions(functions);           \
+                                             \
+    f = *functions = av_mallocz(sizeof(*f)); \
+    if (!f)                                  \
+        return AVERROR(ENOMEM);              \
+                                             \
+    LOAD_LIBRARY(f->lib, N);
+
+#define GENERIC_LOAD_FUNC_FINALE(n) \
+    return 0;                       \
+error:                              \
+    n##_free_functions(functions);  \
+    return ret;
+
+#define GENERIC_FREE_FUNC()              \
+    if (!functions)                      \
+        return;                          \
+    if (*functions && (*functions)->lib) \
+        dlclose((*functions)->lib);      \
+    av_freep(functions);
+
+#ifdef AV_COMPAT_DYNLINK_CUDA_H
+typedef struct CudaFunctions {
+    tcuInit *cuInit;
+    tcuDeviceGetCount *cuDeviceGetCount;
+    tcuDeviceGet *cuDeviceGet;
+    tcuDeviceGetName *cuDeviceGetName;
+    tcuDeviceComputeCapability *cuDeviceComputeCapability;
+    tcuCtxCreate_v2 *cuCtxCreate;
+    tcuCtxPushCurrent_v2 *cuCtxPushCurrent;
+    tcuCtxPopCurrent_v2 *cuCtxPopCurrent;
+    tcuCtxDestroy_v2 *cuCtxDestroy;
+    tcuMemAlloc_v2 *cuMemAlloc;
+    tcuMemFree_v2 *cuMemFree;
+    tcuMemcpy2D_v2 *cuMemcpy2D;
+    tcuGetErrorName *cuGetErrorName;
+    tcuGetErrorString *cuGetErrorString;
+
+    LIB_HANDLE lib;
+} CudaFunctions;
+#else
+typedef struct CudaFunctions CudaFunctions;
+#endif
+
+typedef struct CuvidFunctions {
+    tcuvidCreateDecoder *cuvidCreateDecoder;
+    tcuvidDestroyDecoder *cuvidDestroyDecoder;
+    tcuvidDecodePicture *cuvidDecodePicture;
+    tcuvidMapVideoFrame *cuvidMapVideoFrame;
+    tcuvidUnmapVideoFrame *cuvidUnmapVideoFrame;
+    tcuvidCtxLockCreate *cuvidCtxLockCreate;
+    tcuvidCtxLockDestroy *cuvidCtxLockDestroy;
+    tcuvidCtxLock *cuvidCtxLock;
+    tcuvidCtxUnlock *cuvidCtxUnlock;
+
+    tcuvidCreateVideoSource *cuvidCreateVideoSource;
+    tcuvidCreateVideoSourceW *cuvidCreateVideoSourceW;
+    tcuvidDestroyVideoSource *cuvidDestroyVideoSource;
+    tcuvidSetVideoSourceState *cuvidSetVideoSourceState;
+    tcuvidGetVideoSourceState *cuvidGetVideoSourceState;
+    tcuvidGetSourceVideoFormat *cuvidGetSourceVideoFormat;
+    tcuvidGetSourceAudioFormat *cuvidGetSourceAudioFormat;
+    tcuvidCreateVideoParser *cuvidCreateVideoParser;
+    tcuvidParseVideoData *cuvidParseVideoData;
+    tcuvidDestroyVideoParser *cuvidDestroyVideoParser;
+
+    LIB_HANDLE lib;
+} CuvidFunctions;
+
+typedef struct NvencFunctions {
+    NVENCSTATUS (NVENCAPI *NvEncodeAPICreateInstance)(NV_ENCODE_API_FUNCTION_LIST *functionList);
+    NVENCSTATUS (NVENCAPI *NvEncodeAPIGetMaxSupportedVersion)(uint32_t* version);
+
+    LIB_HANDLE lib;
+} NvencFunctions;
+
+#ifdef AV_COMPAT_DYNLINK_CUDA_H
+static inline void cuda_free_functions(CudaFunctions **functions)
+{
+    GENERIC_FREE_FUNC();
+}
+#endif
+
+static inline void cuvid_free_functions(CuvidFunctions **functions)
+{
+    GENERIC_FREE_FUNC();
+}
+
+static inline void nvenc_free_functions(NvencFunctions **functions)
+{
+    GENERIC_FREE_FUNC();
+}
+
+#ifdef AV_COMPAT_DYNLINK_CUDA_H
+static inline int cuda_load_functions(CudaFunctions **functions)
+{
+    GENERIC_LOAD_FUNC_PREAMBLE(CudaFunctions, cuda, CUDA_LIBNAME);
+
+    LOAD_SYMBOL(cuInit, "cuInit");
+    LOAD_SYMBOL(cuDeviceGetCount, "cuDeviceGetCount");
+    LOAD_SYMBOL(cuDeviceGet, "cuDeviceGet");
+    LOAD_SYMBOL(cuDeviceGetName, "cuDeviceGetName");
+    LOAD_SYMBOL(cuDeviceComputeCapability, "cuDeviceComputeCapability");
+    LOAD_SYMBOL(cuCtxCreate, "cuCtxCreate_v2");
+    LOAD_SYMBOL(cuCtxPushCurrent, "cuCtxPushCurrent_v2");
+    LOAD_SYMBOL(cuCtxPopCurrent, "cuCtxPopCurrent_v2");
+    LOAD_SYMBOL(cuCtxDestroy, "cuCtxDestroy_v2");
+    LOAD_SYMBOL(cuMemAlloc, "cuMemAlloc_v2");
+    LOAD_SYMBOL(cuMemFree, "cuMemFree_v2");
+    LOAD_SYMBOL(cuMemcpy2D, "cuMemcpy2D_v2");
+    LOAD_SYMBOL(cuGetErrorName, "cuGetErrorName");
+    LOAD_SYMBOL(cuGetErrorString, "cuGetErrorString");
+
+    GENERIC_LOAD_FUNC_FINALE(cuda);
+}
+#endif
+
+static inline int cuvid_load_functions(CuvidFunctions **functions)
+{
+    GENERIC_LOAD_FUNC_PREAMBLE(CuvidFunctions, cuvid, NVCUVID_LIBNAME);
+
+    LOAD_SYMBOL(cuvidCreateDecoder, "cuvidCreateDecoder");
+    LOAD_SYMBOL(cuvidDestroyDecoder, "cuvidDestroyDecoder");
+    LOAD_SYMBOL(cuvidDecodePicture, "cuvidDecodePicture");
+#ifdef __CUVID_DEVPTR64
+    LOAD_SYMBOL(cuvidMapVideoFrame, "cuvidMapVideoFrame64");
+    LOAD_SYMBOL(cuvidUnmapVideoFrame, "cuvidUnmapVideoFrame64");
+#else
+    LOAD_SYMBOL(cuvidMapVideoFrame, "cuvidMapVideoFrame");
+    LOAD_SYMBOL(cuvidUnmapVideoFrame, "cuvidUnmapVideoFrame");
+#endif
+    LOAD_SYMBOL(cuvidCtxLockCreate, "cuvidCtxLockCreate");
+    LOAD_SYMBOL(cuvidCtxLockDestroy, "cuvidCtxLockDestroy");
+    LOAD_SYMBOL(cuvidCtxLock, "cuvidCtxLock");
+    LOAD_SYMBOL(cuvidCtxUnlock, "cuvidCtxUnlock");
+
+    LOAD_SYMBOL(cuvidCreateVideoSource, "cuvidCreateVideoSource");
+    LOAD_SYMBOL(cuvidCreateVideoSourceW, "cuvidCreateVideoSourceW");
+    LOAD_SYMBOL(cuvidDestroyVideoSource, "cuvidDestroyVideoSource");
+    LOAD_SYMBOL(cuvidSetVideoSourceState, "cuvidSetVideoSourceState");
+    LOAD_SYMBOL(cuvidGetVideoSourceState, "cuvidGetVideoSourceState");
+    LOAD_SYMBOL(cuvidGetSourceVideoFormat, "cuvidGetSourceVideoFormat");
+    LOAD_SYMBOL(cuvidGetSourceAudioFormat, "cuvidGetSourceAudioFormat");
+    LOAD_SYMBOL(cuvidCreateVideoParser, "cuvidCreateVideoParser");
+    LOAD_SYMBOL(cuvidParseVideoData, "cuvidParseVideoData");
+    LOAD_SYMBOL(cuvidDestroyVideoParser, "cuvidDestroyVideoParser");
+
+    GENERIC_LOAD_FUNC_FINALE(cuvid);
+}
+
+static inline int nvenc_load_functions(NvencFunctions **functions)
+{
+    GENERIC_LOAD_FUNC_PREAMBLE(NvencFunctions, nvenc, NVENC_LIBNAME);
+
+    LOAD_SYMBOL(NvEncodeAPICreateInstance, "NvEncodeAPICreateInstance");
+    LOAD_SYMBOL(NvEncodeAPIGetMaxSupportedVersion, "NvEncodeAPIGetMaxSupportedVersion");
+
+    GENERIC_LOAD_FUNC_FINALE(nvenc);
+}
+
+#undef GENERIC_LOAD_FUNC_PREAMBLE
+#undef LOAD_LIBRARY
+#undef LOAD_SYMBOL
+#undef GENERIC_LOAD_FUNC_FINALE
+#undef GENERIC_FREE_FUNC
+#undef CUDA_LIBNAME
+#undef NVCUVID_LIBNAME
+#undef NVENC_LIBNAME
+#undef LIB_HANDLE
+
+#endif
 
-#endif /* COMPAT_CUDA_DYNLINK_LOADER_H */

compat/cuda/dynlink_nvcuvid.h

@@ -0,0 +1,316 @@
+/*
+ * This copyright notice applies to this header file only:
+ *
+ * Copyright (c) 2010-2016 NVIDIA Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the software, and to permit persons to whom the
+ * software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file nvcuvid.h
+ *   NvCuvid API provides Video Decoding interface to NVIDIA GPU devices.
+ * \date 2015-2015
+ *  This file contains the interface constants, structure definitions and function prototypes.
+ */
+
+#if !defined(__NVCUVID_H__)
+#define __NVCUVID_H__
+
+#include "compat/cuda/dynlink_cuviddec.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif /* __cplusplus */
+
+////////////////////////////////////////////////////////////////////////////////////////////////
+//
+// High-level helper APIs for video sources
+//
+
+typedef void *CUvideosource;
+typedef void *CUvideoparser;
+typedef long long CUvideotimestamp;
+
+/**
+ * \addtogroup VIDEO_PARSER Video Parser
+ * @{
+ */
+
+/*!
+ * \enum cudaVideoState
+ * Video Source State
+ */
+typedef enum {
+    cudaVideoState_Error   = -1,    /**< Error state (invalid source)  */
+    cudaVideoState_Stopped = 0,     /**< Source is stopped (or reached end-of-stream)  */
+    cudaVideoState_Started = 1      /**< Source is running and delivering data  */
+} cudaVideoState;
+
+/*!
+ * \enum cudaAudioCodec
+ * Audio compression
+ */
+typedef enum {
+    cudaAudioCodec_MPEG1=0,         /**< MPEG-1 Audio  */
+    cudaAudioCodec_MPEG2,           /**< MPEG-2 Audio  */
+    cudaAudioCodec_MP3,             /**< MPEG-1 Layer III Audio  */
+    cudaAudioCodec_AC3,             /**< Dolby Digital (AC3) Audio  */
+    cudaAudioCodec_LPCM             /**< PCM Audio  */
+} cudaAudioCodec;
+
+/*!
+ * \struct CUVIDEOFORMAT
+ * Video format
+ */
+typedef struct
+{
+    cudaVideoCodec codec;                   /**< Compression format  */
+   /**
+    * frame rate = numerator / denominator (for example: 30000/1001)
+    */
+    struct {
+        unsigned int numerator;             /**< frame rate numerator   (0 = unspecified or variable frame rate) */
+        unsigned int denominator;           /**< frame rate denominator (0 = unspecified or variable frame rate) */
+    } frame_rate;
+    unsigned char progressive_sequence;     /**< 0=interlaced, 1=progressive */
+    unsigned char bit_depth_luma_minus8;    /**< high bit depth Luma */
+    unsigned char bit_depth_chroma_minus8;  /**< high bit depth Chroma */
+    unsigned char reserved1;                /**< Reserved for future use */
+    unsigned int coded_width;               /**< coded frame width */
+    unsigned int coded_height;              /**< coded frame height  */
+   /**
+    *   area of the frame that should be displayed
+    * typical example:
+    *   coded_width = 1920, coded_height = 1088
+    *   display_area = { 0,0,1920,1080 }
+    */
+    struct {
+        int left;                           /**< left position of display rect  */
+        int top;                            /**< top position of display rect  */
+        int right;                          /**< right position of display rect  */
+        int bottom;                         /**< bottom position of display rect  */
+    } display_area;
+    cudaVideoChromaFormat chroma_format;    /**<  Chroma format */
+    unsigned int bitrate;                   /**< video bitrate (bps, 0=unknown) */
+   /**
+    * Display Aspect Ratio = x:y (4:3, 16:9, etc)
+    */
+    struct {
+        int x;
+        int y;
+    } display_aspect_ratio;
+    /**
+    * Video Signal Description
+    */
+    struct {
+        unsigned char video_format          : 3;
+        unsigned char video_full_range_flag : 1;
+        unsigned char reserved_zero_bits    : 4;
+        unsigned char color_primaries;
+        unsigned char transfer_characteristics;
+        unsigned char matrix_coefficients;
+    } video_signal_description;
+    unsigned int seqhdr_data_length;          /**< Additional bytes following (CUVIDEOFORMATEX)  */
+} CUVIDEOFORMAT;
+
+/*!
+ * \struct CUVIDEOFORMATEX
+ * Video format including raw sequence header information
+ */
+typedef struct
+{
+    CUVIDEOFORMAT format;
+    unsigned char raw_seqhdr_data[1024];
+} CUVIDEOFORMATEX;
+
+/*!
+ * \struct CUAUDIOFORMAT
+ * Audio Formats
+ */
+typedef struct
+{
+    cudaAudioCodec codec;       /**< Compression format  */
+    unsigned int channels;      /**< number of audio channels */
+    unsigned int samplespersec; /**< sampling frequency */
+    unsigned int bitrate;       /**< For uncompressed, can also be used to determine bits per sample */
+    unsigned int reserved1;     /**< Reserved for future use */
+    unsigned int reserved2;     /**< Reserved for future use */
+} CUAUDIOFORMAT;
+
+
+/*!
+ * \enum CUvideopacketflags
+ * Data packet flags
+ */
+typedef enum {
+    CUVID_PKT_ENDOFSTREAM   = 0x01,   /**< Set when this is the last packet for this stream  */
+    CUVID_PKT_TIMESTAMP     = 0x02,   /**< Timestamp is valid  */
+    CUVID_PKT_DISCONTINUITY = 0x04    /**< Set when a discontinuity has to be signalled  */
+} CUvideopacketflags;
+
+/*!
+ * \struct CUVIDSOURCEDATAPACKET
+ * Data Packet
+ */
+typedef struct _CUVIDSOURCEDATAPACKET
+{
+    tcu_ulong flags;                /**< Combination of CUVID_PKT_XXX flags */
+    tcu_ulong payload_size;         /**< number of bytes in the payload (may be zero if EOS flag is set) */
+    const unsigned char *payload;   /**< Pointer to packet payload data (may be NULL if EOS flag is set) */
+    CUvideotimestamp timestamp;     /**< Presentation timestamp (10MHz clock), only valid if CUVID_PKT_TIMESTAMP flag is set */
+} CUVIDSOURCEDATAPACKET;
+
+// Callback for packet delivery
+typedef int (CUDAAPI *PFNVIDSOURCECALLBACK)(void *, CUVIDSOURCEDATAPACKET *);
+
+/*!
+ * \struct CUVIDSOURCEPARAMS
+ * Source Params
+ */
+typedef struct _CUVIDSOURCEPARAMS
+{
+    unsigned int ulClockRate;                   /**< Timestamp units in Hz (0=default=10000000Hz)  */
+    unsigned int uReserved1[7];                 /**< Reserved for future use - set to zero  */
+    void *pUserData;                            /**< Parameter passed in to the data handlers  */
+    PFNVIDSOURCECALLBACK pfnVideoDataHandler;   /**< Called to deliver audio packets  */
+    PFNVIDSOURCECALLBACK pfnAudioDataHandler;   /**< Called to deliver video packets  */
+    void *pvReserved2[8];                       /**< Reserved for future use - set to NULL */
+} CUVIDSOURCEPARAMS;
+
+/*!
+ * \enum CUvideosourceformat_flags
+ * CUvideosourceformat_flags
+ */
+typedef enum {
+    CUVID_FMT_EXTFORMATINFO = 0x100             /**< Return extended format structure (CUVIDEOFORMATEX) */
+} CUvideosourceformat_flags;
+
+#if !defined(__APPLE__)
+/**
+ * \fn CUresult CUDAAPI cuvidCreateVideoSource(CUvideosource *pObj, const char *pszFileName, CUVIDSOURCEPARAMS *pParams)
+ * Create Video Source
+ */
+typedef CUresult CUDAAPI tcuvidCreateVideoSource(CUvideosource *pObj, const char *pszFileName, CUVIDSOURCEPARAMS *pParams);
+
+/**
+ * \fn CUresult CUDAAPI cuvidCreateVideoSourceW(CUvideosource *pObj, const wchar_t *pwszFileName, CUVIDSOURCEPARAMS *pParams)
+ * Create Video Source
+ */
+typedef CUresult CUDAAPI tcuvidCreateVideoSourceW(CUvideosource *pObj, const wchar_t *pwszFileName, CUVIDSOURCEPARAMS *pParams);
+
+/**
+ * \fn CUresult CUDAAPI cuvidDestroyVideoSource(CUvideosource obj)
+ * Destroy Video Source
+ */
+typedef CUresult CUDAAPI tcuvidDestroyVideoSource(CUvideosource obj);
+
+/**
+ * \fn CUresult CUDAAPI cuvidSetVideoSourceState(CUvideosource obj, cudaVideoState state)
+ * Set Video Source state
+ */
+typedef CUresult CUDAAPI tcuvidSetVideoSourceState(CUvideosource obj, cudaVideoState state);
+
+/**
+ * \fn cudaVideoState CUDAAPI cuvidGetVideoSourceState(CUvideosource obj)
+ * Get Video Source state
+ */
+typedef cudaVideoState CUDAAPI tcuvidGetVideoSourceState(CUvideosource obj);
+
+/**
+ * \fn CUresult CUDAAPI cuvidGetSourceVideoFormat(CUvideosource obj, CUVIDEOFORMAT *pvidfmt, unsigned int flags)
+ * Get Video Source Format
+ */
+typedef CUresult CUDAAPI tcuvidGetSourceVideoFormat(CUvideosource obj, CUVIDEOFORMAT *pvidfmt, unsigned int flags);
+
+/**
+ * \fn CUresult CUDAAPI cuvidGetSourceAudioFormat(CUvideosource obj, CUAUDIOFORMAT *paudfmt, unsigned int flags)
+ * Set Video Source state
+ */
+typedef CUresult CUDAAPI tcuvidGetSourceAudioFormat(CUvideosource obj, CUAUDIOFORMAT *paudfmt, unsigned int flags);
+
+#endif
+
+/**
+ * \struct CUVIDPARSERDISPINFO
+ */
+typedef struct _CUVIDPARSERDISPINFO
+{
+    int picture_index;         /**<                 */
+    int progressive_frame;     /**<                 */
+    int top_field_first;       /**<                 */
+    int repeat_first_field;    /**< Number of additional fields (1=ivtc, 2=frame doubling, 4=frame tripling, -1=unpaired field)  */
+    CUvideotimestamp timestamp; /**<     */
+} CUVIDPARSERDISPINFO;
+
+//
+// Parser callbacks
+// The parser will call these synchronously from within cuvidParseVideoData(), whenever a picture is ready to
+// be decoded and/or displayed.
+//
+typedef int (CUDAAPI *PFNVIDSEQUENCECALLBACK)(void *, CUVIDEOFORMAT *);
+typedef int (CUDAAPI *PFNVIDDECODECALLBACK)(void *, CUVIDPICPARAMS *);
+typedef int (CUDAAPI *PFNVIDDISPLAYCALLBACK)(void *, CUVIDPARSERDISPINFO *);
+
+/**
+ * \struct CUVIDPARSERPARAMS
+ */
+typedef struct _CUVIDPARSERPARAMS
+{
+    cudaVideoCodec CodecType;               /**< cudaVideoCodec_XXX  */
+    unsigned int ulMaxNumDecodeSurfaces;    /**< Max # of decode surfaces (parser will cycle through these) */
+    unsigned int ulClockRate;               /**< Timestamp units in Hz (0=default=10000000Hz) */
+    unsigned int ulErrorThreshold;          /**< % Error threshold (0-100) for calling pfnDecodePicture (100=always call pfnDecodePicture even if picture bitstream is fully corrupted) */
+    unsigned int ulMaxDisplayDelay;         /**< Max display queue delay (improves pipelining of decode with display) - 0=no delay (recommended values: 2..4) */
+    unsigned int uReserved1[5];             /**< Reserved for future use - set to 0 */
+    void *pUserData;                        /**< User data for callbacks */
+    PFNVIDSEQUENCECALLBACK pfnSequenceCallback; /**< Called before decoding frames and/or whenever there is a format change */
+    PFNVIDDECODECALLBACK pfnDecodePicture;      /**< Called when a picture is ready to be decoded (decode order) */
+    PFNVIDDISPLAYCALLBACK pfnDisplayPicture;    /**< Called whenever a picture is ready to be displayed (display order)  */
+    void *pvReserved2[7];                       /**< Reserved for future use - set to NULL */
+    CUVIDEOFORMATEX *pExtVideoInfo;             /**< [Optional] sequence header data from system layer */
+} CUVIDPARSERPARAMS;
+
+/**
+ * \fn CUresult CUDAAPI cuvidCreateVideoParser(CUvideoparser *pObj, CUVIDPARSERPARAMS *pParams)
+ */
+typedef CUresult CUDAAPI tcuvidCreateVideoParser(CUvideoparser *pObj, CUVIDPARSERPARAMS *pParams);
+
+/**
+ * \fn CUresult CUDAAPI cuvidParseVideoData(CUvideoparser obj, CUVIDSOURCEDATAPACKET *pPacket)
+ */
+typedef CUresult CUDAAPI tcuvidParseVideoData(CUvideoparser obj, CUVIDSOURCEDATAPACKET *pPacket);
+
+/**
+ * \fn CUresult CUDAAPI cuvidDestroyVideoParser(CUvideoparser obj)
+ */
+typedef CUresult CUDAAPI tcuvidDestroyVideoParser(CUvideoparser obj);
+
+/** @} */  /* END VIDEO_PARSER */
+////////////////////////////////////////////////////////////////////////////////////////////////
+
+#if defined(__cplusplus)
+}
+#endif /* __cplusplus */
+
+#endif // __NVCUVID_H__
+
+

compat/djgpp/math.c

@@ -1,47 +0,0 @@
-/*
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <math.h>
-
-#define FUN(name, type, op) \
-type name(type x, type y) \
-{ \
-    if (fpclassify(x) == FP_NAN) return y; \
-    if (fpclassify(y) == FP_NAN) return x; \
-    return x op y ? x : y; \
-}
-
-FUN(fmin, double, <)
-FUN(fmax, double, >)
-FUN(fminf, float, <)
-FUN(fmaxf, float, >)
-
-long double fmodl(long double x, long double y)
-{
-    return fmod(x, y);
-}
-
-long double scalbnl(long double x, int exp)
-{
-    return scalbn(x, exp);
-}
-
-long double copysignl(long double x, long double y)
-{
-    return copysign(x, y);
-}

compat/djgpp/math.h

@@ -1,25 +0,0 @@
-/*
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-double fmin(double, double);
-double fmax(double, double);
-float fminf(float, float);
-float fmaxf(float, float);
-long double fmodl(long double, long double);
-long double scalbnl(long double, int);
-long double copysignl(long double, long double);

compat/msvcrt/snprintf.c

@@ -59,7 +59,7 @@ int avpriv_vsnprintf(char *s, size_t n, const char *fmt,
      * recommends to provide _snprintf/_vsnprintf() a buffer size that
      * is one less than the actual buffer, and zero it before calling
      * _snprintf/_vsnprintf() to workaround this problem.
-     * See https://web.archive.org/web/20151214111935/http://msdn.microsoft.com/en-us/library/1kt27hek(v=vs.80).aspx */
+     * See http://msdn.microsoft.com/en-us/library/1kt27hek(v=vs.80).aspx */
     memset(s, 0, n);
     va_copy(ap_copy, ap);
     ret = _vsnprintf(s, n - 1, fmt, ap_copy);

compat/os2threads.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011-2017 KO Myung-Hun <komh@chollian.net>
+ * Copyright (c) 2011 KO Myung-Hun <komh@chollian.net>
  *
  * This file is part of FFmpeg.
  *
@@ -27,19 +27,15 @@
 #define COMPAT_OS2THREADS_H
 
 #define INCL_DOS
-#define INCL_DOSERRORS
 #include <os2.h>
 
 #undef __STRICT_ANSI__          /* for _beginthread() */
 #include <stdlib.h>
-#include <time.h>
 
 #include <sys/builtin.h>
 #include <sys/fmutex.h>
 
 #include "libavutil/attributes.h"
-#include "libavutil/common.h"
-#include "libavutil/time.h"
 
 typedef struct {
     TID tid;
@@ -50,11 +46,9 @@ typedef struct {
 
 typedef void pthread_attr_t;
 
-typedef _fmutex pthread_mutex_t;
+typedef HMTX pthread_mutex_t;
 typedef void pthread_mutexattr_t;
 
-#define PTHREAD_MUTEX_INITIALIZER _FMUTEX_INITIALIZER
-
 typedef struct {
     HEV event_sem;
     HEV ack_sem;
@@ -104,28 +98,28 @@ static av_always_inline int pthread_join(pthread_t thread, void **value_ptr)
 static av_always_inline int pthread_mutex_init(pthread_mutex_t *mutex,
                                                const pthread_mutexattr_t *attr)
 {
-    _fmutex_create(mutex, 0);
+    DosCreateMutexSem(NULL, (PHMTX)mutex, 0, FALSE);
 
     return 0;
 }
 
 static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
 {
-    _fmutex_close(mutex);
+    DosCloseMutexSem(*(PHMTX)mutex);
 
     return 0;
 }
 
 static av_always_inline int pthread_mutex_lock(pthread_mutex_t *mutex)
 {
-    _fmutex_request(mutex, 0);
+    DosRequestMutexSem(*(PHMTX)mutex, SEM_INDEFINITE_WAIT);
 
     return 0;
 }
 
 static av_always_inline int pthread_mutex_unlock(pthread_mutex_t *mutex)
 {
-    _fmutex_release(mutex);
+    DosReleaseMutexSem(*(PHMTX)mutex);
 
     return 0;
 }
@@ -167,28 +161,6 @@ static av_always_inline int pthread_cond_broadcast(pthread_cond_t *cond)
     return 0;
 }
 
-static av_always_inline int pthread_cond_timedwait(pthread_cond_t *cond,
-                                                   pthread_mutex_t *mutex,
-                                                   const struct timespec *abstime)
-{
-    int64_t abs_milli = abstime->tv_sec * 1000LL + abstime->tv_nsec / 1000000;
-    ULONG t = av_clip64(abs_milli - av_gettime() / 1000, 0, ULONG_MAX);
-
-    __atomic_increment(&cond->wait_count);
-
-    pthread_mutex_unlock(mutex);
-
-    APIRET ret = DosWaitEventSem(cond->event_sem, t);
-
-    __atomic_decrement(&cond->wait_count);
-
-    DosPostEventSem(cond->ack_sem);
-
-    pthread_mutex_lock(mutex);
-
-    return (ret == ERROR_TIMEOUT) ? ETIMEDOUT : 0;
-}
-
 static av_always_inline int pthread_cond_wait(pthread_cond_t *cond,
                                               pthread_mutex_t *mutex)
 {

compat/plan9/head

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+n=10
+
+case "$1" in
+    -n)  n=$2;      shift 2 ;;
+    -n*) n=${1#-n}; shift   ;;
+esac
+
+exec sed ${n}q "$@"

compat/plan9/main.c

@@ -1,6 +1,4 @@
 /*
- * Copyright (c) 2002 The FFmpeg Project
- *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,14 +16,19 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef AVCODEC_WMV2DEC_H
-#define AVCODEC_WMV2DEC_H
-
-#include "mpegvideo.h"
-
-int ff_wmv2_decode_picture_header(MpegEncContext * s);
-int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
-void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64],
-                    uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
+int plan9_main(int argc, char **argv);
 
+#undef main
+int main(int argc, char **argv)
+{
+    /* The setfcr() function in lib9 is broken, must use asm. */
+#ifdef __i386
+    short fcr;
+    __asm__ volatile ("fstcw        %0 \n"
+                      "or      $63, %0 \n"
+                      "fldcw        %0 \n"
+                      : "=m"(fcr));
 #endif
+
+    return plan9_main(argc, argv);
+}

compat/plan9/printf

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec awk "BEGIN { for (i = 2; i < ARGC; i++) printf \"$1\", ARGV[i] }" "$@"

compat/strtod.c

@@ -25,9 +25,9 @@
 #include "libavutil/avstring.h"
 #include "libavutil/mathematics.h"
 
-static const char *check_nan_suffix(const char *s)
+static char *check_nan_suffix(char *s)
 {
-    const char *start = s;
+    char *start = s;
 
     if (*s++ != '(')
         return start;
@@ -44,7 +44,7 @@ double strtod(const char *, char **);
 
 double avpriv_strtod(const char *nptr, char **endptr)
 {
-    const char *end;
+    char *end;
     double res;
 
     /* Skip leading spaces */
@@ -81,13 +81,13 @@ double avpriv_strtod(const char *nptr, char **endptr)
                !av_strncasecmp(nptr, "+0x", 3)) {
         /* FIXME this doesn't handle exponents, non-integers (float/double)
          * and numbers too large for long long */
-        res = strtoll(nptr, (char **)&end, 16);
+        res = strtoll(nptr, &end, 16);
     } else {
-        res = strtod(nptr, (char **)&end);
+        res = strtod(nptr, &end);
     }
 
     if (endptr)
-        *endptr = (char *)end;
+        *endptr = end;
 
     return res;
 }

compat/tms470/math.h

@@ -16,18 +16,15 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-/**
- * @file
- * AOM common functions
- */
+#ifndef COMPAT_TMS470_MATH_H
+#define COMPAT_TMS470_MATH_H
 
-#ifndef AVCODEC_LIBAOM_H
-#define AVCODEC_LIBAOM_H
+#include_next <math.h>
 
-#include <aom/aom_image.h>
+#undef INFINITY
+#undef NAN
 
-#include "libavutil/frame.h"
+#define INFINITY (*(const float*)((const unsigned []){ 0x7f800000 }))
+#define NAN      (*(const float*)((const unsigned []){ 0x7fc00000 }))
 
-void ff_aom_image_copy_16_to_8(AVFrame *pic, struct aom_image *img);
-
-#endif /* AVCODEC_LIBAOM_H */
+#endif /* COMPAT_TMS470_MATH_H */

compat/w32dlfcn.h

@@ -20,40 +20,10 @@
 #define COMPAT_W32DLFCN_H
 
 #ifdef _WIN32
-#include <stdint.h>
-
 #include <windows.h>
-
-#include "config.h"
-#include "libavutil/macros.h"
+#if _WIN32_WINNT < 0x0602
 #include "libavutil/wchar_filename.h"
-
-static inline wchar_t *get_module_filename(HMODULE module)
-{
-    wchar_t *path = NULL, *new_path;
-    DWORD path_size = 0, path_len;
-
-    do {
-        path_size = path_size ? FFMIN(2 * path_size, INT16_MAX + 1) : MAX_PATH;
-        new_path = av_realloc_array(path, path_size, sizeof *path);
-        if (!new_path) {
-            av_free(path);
-            return NULL;
-        }
-        path = new_path;
-        // Returns path_size in case of insufficient buffer.
-        // Whether the error is set or not and whether the output
-        // is null-terminated or not depends on the version of Windows.
-        path_len = GetModuleFileNameW(module, path, path_size);
-    } while (path_len && path_size <= INT16_MAX && path_size <= path_len);
-
-    if (!path_len) {
-        av_free(path);
-        return NULL;
-    }
-    return path;
-}
-
+#endif
 /**
  * Safe function used to open dynamic libs. This attempts to improve program security
  * by removing the current directory from the dll search path. Only dll's found in the
@@ -63,53 +33,29 @@ static inline wchar_t *get_module_filename(HMODULE module)
  */
 static inline HMODULE win32_dlopen(const char *name)
 {
-    wchar_t *name_w;
-    HMODULE module = NULL;
-    if (utf8towchar(name, &name_w))
-        name_w = NULL;
 #if _WIN32_WINNT < 0x0602
-    // On Win7 and earlier we check if KB2533623 is available
+    // Need to check if KB2533623 is available
     if (!GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "SetDefaultDllDirectories")) {
-        wchar_t *path = NULL, *new_path;
-        DWORD pathlen, pathsize, namelen;
-        if (!name_w)
+        HMODULE module = NULL;
+        wchar_t *path = NULL, *name_w = NULL;
+        DWORD pathlen;
+        if (utf8towchar(name, &name_w))
             goto exit;
-        namelen = wcslen(name_w);
+        path = (wchar_t *)av_mallocz_array(MAX_PATH, sizeof(wchar_t));
         // Try local directory first
-        path = get_module_filename(NULL);
-        if (!path)
+        pathlen = GetModuleFileNameW(NULL, path, MAX_PATH);
+        pathlen = wcsrchr(path, '\\') - path;
+        if (pathlen == 0 || pathlen + wcslen(name_w) + 2 > MAX_PATH)
             goto exit;
-        new_path = wcsrchr(path, '\\');
-        if (!new_path)
-            goto exit;
-        pathlen = new_path - path;
-        pathsize = pathlen + namelen + 2;
-        new_path = av_realloc_array(path, pathsize, sizeof *path);
-        if (!new_path)
-            goto exit;
-        path = new_path;
+        path[pathlen] = '\\';
         wcscpy(path + pathlen + 1, name_w);
         module = LoadLibraryExW(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
         if (module == NULL) {
             // Next try System32 directory
-            pathlen = GetSystemDirectoryW(path, pathsize);
-            if (!pathlen)
+            pathlen = GetSystemDirectoryW(path, MAX_PATH);
+            if (pathlen == 0 || pathlen + wcslen(name_w) + 2 > MAX_PATH)
                 goto exit;
-            // Buffer is not enough in two cases:
-            // 1. system directory + \ + module name
-            // 2. system directory even without the module name.
-            if (pathlen + namelen + 2 > pathsize) {
-                pathsize = pathlen + namelen + 2;
-                new_path = av_realloc_array(path, pathsize, sizeof *path);
-                if (!new_path)
-                    goto exit;
-                path = new_path;
-                // Query again to handle the case #2.
-                pathlen = GetSystemDirectoryW(path, pathsize);
-                if (!pathlen)
-                    goto exit;
-            }
-            path[pathlen] = L'\\';
+            path[pathlen] = '\\';
             wcscpy(path + pathlen + 1, name_w);
             module = LoadLibraryExW(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
         }
@@ -125,20 +71,7 @@ exit:
 #ifndef LOAD_LIBRARY_SEARCH_SYSTEM32
 #   define LOAD_LIBRARY_SEARCH_SYSTEM32        0x00000800
 #endif
-#if HAVE_WINRT
-    if (!name_w)
-        return NULL;
-    module = LoadPackagedLibrary(name_w, 0);
-#else
-#define LOAD_FLAGS (LOAD_LIBRARY_SEARCH_APPLICATION_DIR | LOAD_LIBRARY_SEARCH_SYSTEM32)
-    /* filename may be be in CP_ACP */
-    if (!name_w)
-        return LoadLibraryExA(name, NULL, LOAD_FLAGS);
-    module = LoadLibraryExW(name_w, NULL, LOAD_FLAGS);
-#undef LOAD_FLAGS
-#endif
-    av_free(name_w);
-    return module;
+    return LoadLibraryExA(name, NULL, LOAD_LIBRARY_SEARCH_APPLICATION_DIR | LOAD_LIBRARY_SEARCH_SYSTEM32);
 }
 #define dlopen(name, flags) win32_dlopen(name)
 #define dlclose FreeLibrary

compat/w32pthreads.h

@@ -35,15 +35,19 @@
  * As most functions here are used without checking return values,
  * only implement return values as necessary. */
 
+#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <process.h>
-#include <time.h>
+
+#if _WIN32_WINNT < 0x0600 && defined(__MINGW32__)
+#undef MemoryBarrier
+#define MemoryBarrier __sync_synchronize
+#endif
 
 #include "libavutil/attributes.h"
 #include "libavutil/common.h"
 #include "libavutil/internal.h"
 #include "libavutil/mem.h"
-#include "libavutil/time.h"
 
 typedef struct pthread_t {
     void *handle;
@@ -52,29 +56,28 @@ typedef struct pthread_t {
     void *ret;
 } pthread_t;
 
-/* use light weight mutex/condition variable API for Windows Vista and later */
-typedef SRWLOCK pthread_mutex_t;
+/* the conditional variable api for windows 6.0+ uses critical sections and
+ * not mutexes */
+typedef CRITICAL_SECTION pthread_mutex_t;
+
+/* This is the CONDITION_VARIABLE typedef for using Windows' native
+ * conditional variables on kernels 6.0+. */
+#if HAVE_CONDITION_VARIABLE_PTR
 typedef CONDITION_VARIABLE pthread_cond_t;
-
-#define PTHREAD_MUTEX_INITIALIZER SRWLOCK_INIT
-#define PTHREAD_COND_INITIALIZER CONDITION_VARIABLE_INIT
-
-#define InitializeCriticalSection(x) InitializeCriticalSectionEx(x, 0, 0)
-#define WaitForSingleObject(a, b) WaitForSingleObjectEx(a, b, FALSE)
-
-#define PTHREAD_CANCEL_ENABLE 1
-#define PTHREAD_CANCEL_DISABLE 0
-
-#if HAVE_WINRT
-#define THREADFUNC_RETTYPE DWORD
 #else
-#define THREADFUNC_RETTYPE unsigned
+typedef struct pthread_cond_t {
+    void *Ptr;
+} pthread_cond_t;
 #endif
 
-static av_unused THREADFUNC_RETTYPE
-__stdcall attribute_align_arg win32thread_worker(void *arg)
+#if _WIN32_WINNT >= 0x0600
+#define InitializeCriticalSection(x) InitializeCriticalSectionEx(x, 0, 0)
+#define WaitForSingleObject(a, b) WaitForSingleObjectEx(a, b, FALSE)
+#endif
+
+static av_unused unsigned __stdcall attribute_align_arg win32thread_worker(void *arg)
 {
-    pthread_t *h = (pthread_t*)arg;
+    pthread_t *h = arg;
     h->ret = h->func(h->arg);
     return 0;
 }
@@ -111,25 +114,26 @@ static av_unused int pthread_join(pthread_t thread, void **value_ptr)
 
 static inline int pthread_mutex_init(pthread_mutex_t *m, void* attr)
 {
-    InitializeSRWLock(m);
+    InitializeCriticalSection(m);
     return 0;
 }
 static inline int pthread_mutex_destroy(pthread_mutex_t *m)
 {
-    /* Unlocked SWR locks use no resources */
+    DeleteCriticalSection(m);
     return 0;
 }
 static inline int pthread_mutex_lock(pthread_mutex_t *m)
 {
-    AcquireSRWLockExclusive(m);
+    EnterCriticalSection(m);
     return 0;
 }
 static inline int pthread_mutex_unlock(pthread_mutex_t *m)
 {
-    ReleaseSRWLockExclusive(m);
+    LeaveCriticalSection(m);
     return 0;
 }
 
+#if _WIN32_WINNT >= 0x0600
 typedef INIT_ONCE pthread_once_t;
 #define PTHREAD_ONCE_INIT INIT_ONCE_STATIC_INIT
 
@@ -163,23 +167,7 @@ static inline int pthread_cond_broadcast(pthread_cond_t *cond)
 
 static inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 {
-    SleepConditionVariableSRW(cond, mutex, INFINITE, 0);
-    return 0;
-}
-
-static inline int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
-                                         const struct timespec *abstime)
-{
-    int64_t abs_milli = abstime->tv_sec * 1000LL + abstime->tv_nsec / 1000000;
-    DWORD t = av_clip64(abs_milli - av_gettime() / 1000, 0, UINT32_MAX);
-
-    if (!SleepConditionVariableSRW(cond, mutex, t, 0)) {
-        DWORD err = GetLastError();
-        if (err == ERROR_TIMEOUT)
-            return ETIMEDOUT;
-        else
-            return EINVAL;
-    }
+    SleepConditionVariableCS(cond, mutex, INFINITE);
     return 0;
 }
 
@@ -189,9 +177,242 @@ static inline int pthread_cond_signal(pthread_cond_t *cond)
     return 0;
 }
 
-static inline int pthread_setcancelstate(int state, int *oldstate)
+#else // _WIN32_WINNT < 0x0600
+
+/* atomic init state of dynamically loaded functions */
+static LONG w32thread_init_state = 0;
+static av_unused void w32thread_init(void);
+
+/* for pre-Windows 6.0 platforms, define INIT_ONCE struct,
+ * compatible to the one used in the native API */
+
+typedef union pthread_once_t  {
+    void * Ptr;    ///< For the Windows 6.0+ native functions
+    LONG state;    ///< For the pre-Windows 6.0 compat code
+} pthread_once_t;
+
+#define PTHREAD_ONCE_INIT {0}
+
+/* function pointers to init once API on windows 6.0+ kernels */
+static BOOL (WINAPI *initonce_begin)(pthread_once_t *lpInitOnce, DWORD dwFlags, BOOL *fPending, void **lpContext);
+static BOOL (WINAPI *initonce_complete)(pthread_once_t *lpInitOnce, DWORD dwFlags, void *lpContext);
+
+/* pre-Windows 6.0 compat using a spin-lock */
+static inline void w32thread_once_fallback(LONG volatile *state, void (*init_routine)(void))
 {
+    switch (InterlockedCompareExchange(state, 1, 0)) {
+    /* Initial run */
+    case 0:
+        init_routine();
+        InterlockedExchange(state, 2);
+        break;
+    /* Another thread is running init */
+    case 1:
+        while (1) {
+            MemoryBarrier();
+            if (*state == 2)
+                break;
+            Sleep(0);
+        }
+        break;
+    /* Initialization complete */
+    case 2:
+        break;
+    }
+}
+
+static av_unused int pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
+{
+    w32thread_once_fallback(&w32thread_init_state, w32thread_init);
+
+    /* Use native functions on Windows 6.0+ */
+    if (initonce_begin && initonce_complete) {
+        BOOL pending = FALSE;
+        initonce_begin(once_control, 0, &pending, NULL);
+        if (pending)
+            init_routine();
+        initonce_complete(once_control, 0, NULL);
+        return 0;
+    }
+
+    w32thread_once_fallback(&once_control->state, init_routine);
     return 0;
 }
 
+/* for pre-Windows 6.0 platforms we need to define and use our own condition
+ * variable and api */
+
+typedef struct  win32_cond_t {
+    pthread_mutex_t mtx_broadcast;
+    pthread_mutex_t mtx_waiter_count;
+    volatile int waiter_count;
+    HANDLE semaphore;
+    HANDLE waiters_done;
+    volatile int is_broadcast;
+} win32_cond_t;
+
+/* function pointers to conditional variable API on windows 6.0+ kernels */
+static void (WINAPI *cond_broadcast)(pthread_cond_t *cond);
+static void (WINAPI *cond_init)(pthread_cond_t *cond);
+static void (WINAPI *cond_signal)(pthread_cond_t *cond);
+static BOOL (WINAPI *cond_wait)(pthread_cond_t *cond, pthread_mutex_t *mutex,
+                                DWORD milliseconds);
+
+static av_unused int pthread_cond_init(pthread_cond_t *cond, const void *unused_attr)
+{
+    win32_cond_t *win32_cond = NULL;
+
+    w32thread_once_fallback(&w32thread_init_state, w32thread_init);
+
+    if (cond_init) {
+        cond_init(cond);
+        return 0;
+    }
+
+    /* non native condition variables */
+    win32_cond = av_mallocz(sizeof(win32_cond_t));
+    if (!win32_cond)
+        return ENOMEM;
+    cond->Ptr = win32_cond;
+    win32_cond->semaphore = CreateSemaphore(NULL, 0, 0x7fffffff, NULL);
+    if (!win32_cond->semaphore)
+        return ENOMEM;
+    win32_cond->waiters_done = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!win32_cond->waiters_done)
+        return ENOMEM;
+
+    pthread_mutex_init(&win32_cond->mtx_waiter_count, NULL);
+    pthread_mutex_init(&win32_cond->mtx_broadcast, NULL);
+    return 0;
+}
+
+static av_unused int pthread_cond_destroy(pthread_cond_t *cond)
+{
+    win32_cond_t *win32_cond = cond->Ptr;
+    /* native condition variables do not destroy */
+    if (cond_init)
+        return 0;
+
+    /* non native condition variables */
+    CloseHandle(win32_cond->semaphore);
+    CloseHandle(win32_cond->waiters_done);
+    pthread_mutex_destroy(&win32_cond->mtx_waiter_count);
+    pthread_mutex_destroy(&win32_cond->mtx_broadcast);
+    av_freep(&win32_cond);
+    cond->Ptr = NULL;
+    return 0;
+}
+
+static av_unused int pthread_cond_broadcast(pthread_cond_t *cond)
+{
+    win32_cond_t *win32_cond = cond->Ptr;
+    int have_waiter;
+
+    if (cond_broadcast) {
+        cond_broadcast(cond);
+        return 0;
+    }
+
+    /* non native condition variables */
+    pthread_mutex_lock(&win32_cond->mtx_broadcast);
+    pthread_mutex_lock(&win32_cond->mtx_waiter_count);
+    have_waiter = 0;
+
+    if (win32_cond->waiter_count) {
+        win32_cond->is_broadcast = 1;
+        have_waiter = 1;
+    }
+
+    if (have_waiter) {
+        ReleaseSemaphore(win32_cond->semaphore, win32_cond->waiter_count, NULL);
+        pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+        WaitForSingleObject(win32_cond->waiters_done, INFINITE);
+        ResetEvent(win32_cond->waiters_done);
+        win32_cond->is_broadcast = 0;
+    } else
+        pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+    pthread_mutex_unlock(&win32_cond->mtx_broadcast);
+    return 0;
+}
+
+static av_unused int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
+{
+    win32_cond_t *win32_cond = cond->Ptr;
+    int last_waiter;
+    if (cond_wait) {
+        cond_wait(cond, mutex, INFINITE);
+        return 0;
+    }
+
+    /* non native condition variables */
+    pthread_mutex_lock(&win32_cond->mtx_broadcast);
+    pthread_mutex_lock(&win32_cond->mtx_waiter_count);
+    win32_cond->waiter_count++;
+    pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+    pthread_mutex_unlock(&win32_cond->mtx_broadcast);
+
+    // unlock the external mutex
+    pthread_mutex_unlock(mutex);
+    WaitForSingleObject(win32_cond->semaphore, INFINITE);
+
+    pthread_mutex_lock(&win32_cond->mtx_waiter_count);
+    win32_cond->waiter_count--;
+    last_waiter = !win32_cond->waiter_count || !win32_cond->is_broadcast;
+    pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+
+    if (last_waiter)
+        SetEvent(win32_cond->waiters_done);
+
+    // lock the external mutex
+    return pthread_mutex_lock(mutex);
+}
+
+static av_unused int pthread_cond_signal(pthread_cond_t *cond)
+{
+    win32_cond_t *win32_cond = cond->Ptr;
+    int have_waiter;
+    if (cond_signal) {
+        cond_signal(cond);
+        return 0;
+    }
+
+    pthread_mutex_lock(&win32_cond->mtx_broadcast);
+
+    /* non-native condition variables */
+    pthread_mutex_lock(&win32_cond->mtx_waiter_count);
+    have_waiter = win32_cond->waiter_count;
+    pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+
+    if (have_waiter) {
+        ReleaseSemaphore(win32_cond->semaphore, 1, NULL);
+        WaitForSingleObject(win32_cond->waiters_done, INFINITE);
+        ResetEvent(win32_cond->waiters_done);
+    }
+
+    pthread_mutex_unlock(&win32_cond->mtx_broadcast);
+    return 0;
+}
+#endif
+
+static av_unused void w32thread_init(void)
+{
+#if _WIN32_WINNT < 0x0600
+    HANDLE kernel_dll = GetModuleHandle(TEXT("kernel32.dll"));
+    /* if one is available, then they should all be available */
+    cond_init      =
+        (void*)GetProcAddress(kernel_dll, "InitializeConditionVariable");
+    cond_broadcast =
+        (void*)GetProcAddress(kernel_dll, "WakeAllConditionVariable");
+    cond_signal    =
+        (void*)GetProcAddress(kernel_dll, "WakeConditionVariable");
+    cond_wait      =
+        (void*)GetProcAddress(kernel_dll, "SleepConditionVariableCS");
+    initonce_begin =
+        (void*)GetProcAddress(kernel_dll, "InitOnceBeginInitialize");
+    initonce_complete =
+        (void*)GetProcAddress(kernel_dll, "InitOnceComplete");
+#endif
+
+}
+
 #endif /* COMPAT_W32PTHREADS_H */

compat/windows/makedef

@@ -45,11 +45,7 @@ libname=$(mktemp -u "library").lib
 
 trap 'rm -f -- $libname' EXIT
 
-if [ -n "$AR" ]; then
-    $AR rcs ${libname} $@ >/dev/null
-else
-    lib.exe -out:${libname} $@ >/dev/null
-fi
+lib -out:${libname} $@ >/dev/null
 if [ $? != 0 ]; then
     echo "Could not create temporary library." >&2
     exit 1
@@ -58,7 +54,23 @@ fi
 IFS='
 '
 
-prefix="$EXTERN_PREFIX"
+# Determine if we're building for x86 or x86_64 and
+# set the symbol prefix accordingly.
+prefix=""
+arch=$(dumpbin -headers ${libname} |
+       tr '\t' ' ' |
+       grep '^ \+.\+machine \+(.\+)' |
+       head -1 |
+       sed -e 's/^ \{1,\}.\{1,\} \{1,\}machine \{1,\}(\(...\)).*/\1/')
+
+if [ "${arch}" = "x86" ]; then
+    prefix="_"
+else
+    if [ "${arch}" != "ARM" ] && [ "${arch}" != "x64" ]; then
+        echo "Unknown machine type." >&2
+        exit 1
+    fi
+fi
 
 started=0
 regex="none"
@@ -100,19 +112,7 @@ for line in $(cat ${vscript} | tr '\t' ' '); do
 '
 done
 
-if [ -n "$NM" ]; then
-    # Use eval, since NM="nm -g"
-    dump=$(eval "$NM --defined-only -g ${libname}" |
-              grep -v : |
-              grep -v ^$ |
-              cut -d' ' -f3 |
-              sed -e "s/^${prefix}//")
-else
-    dump=$(dumpbin.exe -linkermember:1 ${libname} |
-              sed -e '/public symbols/,$!d' -e '/^ \{1,\}Summary/,$d' -e "s/ \{1,\}${prefix}/ /" -e 's/ \{1,\}/ /g' |
-              tail -n +2 |
-              cut -d' ' -f3)
-fi
+dump=$(dumpbin -linkermember:1 ${libname})
 
 rm ${libname}
 
@@ -121,6 +121,9 @@ list=""
 for exp in ${regex}; do
     list="${list}"'
 '$(echo "${dump}" |
+          sed -e '/public symbols/,$!d' -e '/^ \{1,\}Summary/,$d' -e "s/ \{1,\}${prefix}/ /" -e 's/ \{1,\}/ /g' |
+          tail -n +2 |
+          cut -d' ' -f3 |
           grep "^${exp}" |
           sed -e 's/^/    /')
 done

compat/windows/mslink

@@ -4,6 +4,6 @@ LINK_EXE_PATH=$(dirname "$(command -v cl)")/link
 if [ -x "$LINK_EXE_PATH" ]; then
     "$LINK_EXE_PATH" $@
 else
-    link.exe $@
+    link $@
 fi
 exit $?

compat/windows/mswindres

@@ -1,32 +0,0 @@
-#!/bin/sh
-
-if [ "$1" = "--version" ]; then
-    rc.exe -?
-    exit $?
-fi
-
-if [ $# -lt 2 ]; then
-    echo "Usage: mswindres [-I/include/path ...] [-DSOME_DEFINE ...] [-o output.o] input.rc [output.o]" >&2
-    exit 0
-fi
-
-EXTRA_OPTS="-nologo"
-
-while [ $# -gt 2 ]; do
-    case $1 in
-    -D*) EXTRA_OPTS="$EXTRA_OPTS -d$(echo $1 | sed -e "s/^..//" -e "s/ /\\\\ /g")" ;;
-    -I*) EXTRA_OPTS="$EXTRA_OPTS -i$(echo $1 | sed -e "s/^..//" -e "s/ /\\\\ /g")" ;;
-    -o)  OPT_OUT="$2"; shift ;;
-    esac
-    shift
-done
-
-IN="$1"
-if [ -z "$OPT_OUT" ]; then
-    OUT="$2"
-else
-    OUT="$OPT_OUT"
-fi
-
-eval set -- $EXTRA_OPTS
-rc.exe "$@" -fo "$OUT" "$IN"

doc/Doxyfile

@@ -38,7 +38,7 @@ PROJECT_NAME           = FFmpeg
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 6.1
+PROJECT_NUMBER         = 3.3.9
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -1980,7 +1980,6 @@ PREDEFINED             = __attribute__(x)= \
                          av_alloc_size(...)= \
                          AV_GCC_VERSION_AT_LEAST(x,y)=1 \
                          AV_GCC_VERSION_AT_MOST(x,y)=0 \
-                         "FF_PAD_STRUCTURE(name,size,...)=typedef struct name { __VA_ARGS__ } name;" \
                          __GNUC__
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this

doc/Makefile

@@ -19,18 +19,13 @@ MANPAGES3   = $(LIBRARIES-yes:%=doc/%.3)
 MANPAGES    = $(MANPAGES1) $(MANPAGES3)
 PODPAGES    = $(AVPROGS-yes:%=doc/%.pod)  $(AVPROGS-yes:%=doc/%-all.pod)  $(COMPONENTS-yes:%=doc/%.pod)  $(LIBRARIES-yes:%=doc/%.pod)
 HTMLPAGES   = $(AVPROGS-yes:%=doc/%.html) $(AVPROGS-yes:%=doc/%-all.html) $(COMPONENTS-yes:%=doc/%.html) $(LIBRARIES-yes:%=doc/%.html) \
-              doc/community.html                                        \
               doc/developer.html                                        \
               doc/faq.html                                              \
               doc/fate.html                                             \
               doc/general.html                                          \
               doc/git-howto.html                                        \
-              doc/mailing-list-faq.html                                 \
               doc/nut.html                                              \
               doc/platform.html                                         \
-              $(SRC_PATH)/doc/bootstrap.min.css                         \
-              $(SRC_PATH)/doc/style.min.css                             \
-              $(SRC_PATH)/doc/default.css                               \
 
 TXTPAGES    = doc/fate.txt                                              \
 
@@ -41,6 +36,33 @@ DOCS-$(CONFIG_MANPAGES)  += $(MANPAGES)
 DOCS-$(CONFIG_TXTPAGES)  += $(TXTPAGES)
 DOCS = $(DOCS-yes)
 
+DOC_EXAMPLES-$(CONFIG_AVIO_DIR_CMD_EXAMPLE)      += avio_dir_cmd
+DOC_EXAMPLES-$(CONFIG_AVIO_READING_EXAMPLE)      += avio_reading
+DOC_EXAMPLES-$(CONFIG_DECODE_AUDIO_EXAMPLE)      += decode_audio
+DOC_EXAMPLES-$(CONFIG_DECODE_VIDEO_EXAMPLE)      += decode_video
+DOC_EXAMPLES-$(CONFIG_DEMUXING_DECODING_EXAMPLE) += demuxing_decoding
+DOC_EXAMPLES-$(CONFIG_ENCODE_AUDIO_EXAMPLE)      += encode_audio
+DOC_EXAMPLES-$(CONFIG_ENCODE_VIDEO_EXAMPLE)      += encode_video
+DOC_EXAMPLES-$(CONFIG_EXTRACT_MVS_EXAMPLE)       += extract_mvs
+DOC_EXAMPLES-$(CONFIG_FILTER_AUDIO_EXAMPLE)      += filter_audio
+DOC_EXAMPLES-$(CONFIG_FILTERING_AUDIO_EXAMPLE)   += filtering_audio
+DOC_EXAMPLES-$(CONFIG_FILTERING_VIDEO_EXAMPLE)   += filtering_video
+DOC_EXAMPLES-$(CONFIG_HTTP_MULTICLIENT_EXAMPLE)  += http_multiclient
+DOC_EXAMPLES-$(CONFIG_METADATA_EXAMPLE)          += metadata
+DOC_EXAMPLES-$(CONFIG_MUXING_EXAMPLE)            += muxing
+DOC_EXAMPLES-$(CONFIG_QSVDEC_EXAMPLE)            += qsvdec
+DOC_EXAMPLES-$(CONFIG_REMUXING_EXAMPLE)          += remuxing
+DOC_EXAMPLES-$(CONFIG_RESAMPLING_AUDIO_EXAMPLE)  += resampling_audio
+DOC_EXAMPLES-$(CONFIG_SCALING_VIDEO_EXAMPLE)     += scaling_video
+DOC_EXAMPLES-$(CONFIG_TRANSCODE_AAC_EXAMPLE)     += transcode_aac
+DOC_EXAMPLES-$(CONFIG_TRANSCODING_EXAMPLE)       += transcoding
+ALL_DOC_EXAMPLES_LIST = $(DOC_EXAMPLES-) $(DOC_EXAMPLES-yes)
+
+DOC_EXAMPLES       := $(DOC_EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)$(EXESUF))
+ALL_DOC_EXAMPLES   := $(ALL_DOC_EXAMPLES_LIST:%=doc/examples/%$(PROGSSUF)$(EXESUF))
+ALL_DOC_EXAMPLES_G := $(ALL_DOC_EXAMPLES_LIST:%=doc/examples/%$(PROGSSUF)_g$(EXESUF))
+PROGS              += $(DOC_EXAMPLES)
+
 all-$(CONFIG_DOC): doc
 
 doc: documentation
@@ -48,6 +70,8 @@ doc: documentation
 apidoc: doc/doxy/html
 documentation: $(DOCS)
 
+examples: $(DOC_EXAMPLES)
+
 TEXIDEP = perl $(SRC_PATH)/doc/texidep.pl $(SRC_PATH) $< $@ >$(@:%=%.d)
 
 doc/%.txt: TAG = TXT
@@ -100,13 +124,15 @@ doc/%.3: doc/%.pod $(GENTEXI)
 	$(M)pod2man --section=3 --center=" " --release=" " --date=" " $< > $@
 
 $(DOCS) doc/doxy/html: | doc/
+$(DOC_EXAMPLES:%$(EXESUF)=%.o): | doc/examples
+OBJDIRS += doc/examples
 
-DOXY_INPUT      = $(INSTHEADERS)
-DOXY_INPUT_DEPS = $(addprefix $(SRC_PATH)/, $(DOXY_INPUT)) ffbuild/config.mak
+DOXY_INPUT      = $(INSTHEADERS) $(DOC_EXAMPLES:%$(EXESUF)=%.c) $(LIB_EXAMPLES:%$(EXESUF)=%.c)
+DOXY_INPUT_DEPS = $(addprefix $(SRC_PATH)/, $(DOXY_INPUT)) config.mak
 
 doc/doxy/html: TAG = DOXY
 doc/doxy/html: $(SRC_PATH)/doc/Doxyfile $(SRC_PATH)/doc/doxy-wrapper.sh $(DOXY_INPUT_DEPS)
-	$(M)$(SRC_PATH)/doc/doxy-wrapper.sh $$PWD/doc/doxy $(SRC_PATH) doc/Doxyfile $(DOXYGEN) $(DOXY_INPUT);
+	$(M)OUT_DIR=$$PWD/doc/doxy; cd $(SRC_PATH); ./doc/doxy-wrapper.sh $$OUT_DIR $< $(DOXYGEN) $(DOXY_INPUT);
 
 install-doc: install-html install-man
 
@@ -148,7 +174,11 @@ clean:: docclean
 distclean:: docclean
 	$(RM) doc/config.texi
 
-docclean::
+examplesclean:
+	$(RM) $(ALL_DOC_EXAMPLES) $(ALL_DOC_EXAMPLES_G)
+	$(RM) $(CLEANSUFFIXES:%=doc/examples/%)
+
+docclean: examplesclean
 	$(RM) $(CLEANSUFFIXES:%=doc/%)
 	$(RM) $(TXTPAGES) doc/*.html doc/*.pod doc/*.1 doc/*.3 doc/avoptions_*.texi
 	$(RM) -r doc/doxy/html

doc/authors.texi

@@ -3,9 +3,9 @@
 The FFmpeg developers.
 
 For details about the authorship, see the Git history of the project
-(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
+(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
 @command{git log} in the FFmpeg source directory, or browsing the
-online repository at @url{https://git.ffmpeg.org/ffmpeg}.
+online repository at @url{http://source.ffmpeg.org}.
 
 Maintainers for the specific components are listed in the file
 @file{MAINTAINERS} in the source code tree.

doc/bitstream_filters.texi

@@ -37,61 +37,6 @@ raw ADTS AAC or an MPEG-TS container to MP4A-LATM, to an FLV file, or
 to MOV/MP4 files and related formats such as 3GP or M4A. Please note
 that it is auto-inserted for MP4A-LATM and MOV/MP4 and related formats.
 
-@section av1_metadata
-
-Modify metadata embedded in an AV1 stream.
-
-@table @option
-@item td
-Insert or remove temporal delimiter OBUs in all temporal units of the
-stream.
-
-@table @samp
-@item insert
-Insert a TD at the beginning of every TU which does not already have one.
-@item remove
-Remove the TD from the beginning of every TU which has one.
-@end table
-
-@item color_primaries
-@item transfer_characteristics
-@item matrix_coefficients
-Set the color description fields in the stream (see AV1 section 6.4.2).
-
-@item color_range
-Set the color range in the stream (see AV1 section 6.4.2; note that
-this cannot be set for streams using BT.709 primaries, sRGB transfer
-characteristic and identity (RGB) matrix coefficients).
-@table @samp
-@item tv
-Limited range.
-@item pc
-Full range.
-@end table
-
-@item chroma_sample_position
-Set the chroma sample location in the stream (see AV1 section 6.4.2).
-This can only be set for 4:2:0 streams.
-
-@table @samp
-@item vertical
-Left position (matching the default in MPEG-2 and H.264).
-@item colocated
-Top-left position.
-@end table
-
-@item tick_rate
-Set the tick rate (@emph{time_scale / num_units_in_display_tick}) in
-the timing info in the sequence header.
-@item num_ticks_per_picture
-Set the number of ticks in each picture, to indicate that the stream
-has a fixed framerate.  Ignored if @option{tick_rate} is not also set.
-
-@item delete_padding
-Deletes Padding OBUs.
-
-@end table
-
 @section chomp
 
 Remove zero padding at the end of a packet.
@@ -103,24 +48,21 @@ DTS-HD.
 
 @section dump_extra
 
-Add extradata to the beginning of the filtered packets except when
-said packets already exactly begin with the extradata that is intended
-to be added.
+Add extradata to the beginning of the filtered packets.
 
-@table @option
-@item freq
 The additional argument specifies which packets should be filtered.
 It accepts the values:
 @table @samp
+@item a
+add extradata to all key packets, but only if @var{local_header} is
+set in the @option{flags2} codec context field
+
 @item k
-@item keyframe
 add extradata to all key packets
 
 @item e
-@item all
 add extradata to all packets
 @end table
-@end table
 
 If not specified it is assumed @samp{k}.
 
@@ -132,40 +74,6 @@ the header stored in extradata to the key packets:
 ffmpeg -i INPUT -map 0 -flags:v +global_header -c:v libx264 -bsf:v dump_extra out.ts
 @end example
 
-@section dv_error_marker
-
-Blocks in DV which are marked as damaged are replaced by blocks of the specified color.
-
-@table @option
-@item color
-The color to replace damaged blocks by
-@item sta
-A 16 bit mask which specifies which of the 16 possible error status values are
-to be replaced by colored blocks. 0xFFFE is the default which replaces all non 0
-error status values.
-@table @samp
-@item ok
-No error, no concealment
-@item err
-Error, No concealment
-@item res
-Reserved
-@item notok
-Error or concealment
-@item notres
-Not reserved
-@item Aa, Ba, Ca, Ab, Bb, Cb, A, B, C, a, b, erri, erru
-The specific error status code
-@end table
-see page 44-46 or section 5.5 of
-@url{http://web.archive.org/web/20060927044735/http://www.smpte.org/smpte_store/standards/pdf/s314m.pdf}
-
-@end table
-
-@section eac3_core
-
-Extract the core from a E-AC-3 stream, dropping extra channels.
-
 @section extract_extradata
 
 Extract the in-band extradata.
@@ -184,179 +92,6 @@ When this option is enabled, the long-term headers are removed from the
 bitstream after extraction.
 @end table
 
-@section filter_units
-
-Remove units with types in or not in a given set from the stream.
-
-@table @option
-@item pass_types
-List of unit types or ranges of unit types to pass through while removing
-all others.  This is specified as a '|'-separated list of unit type values
-or ranges of values with '-'.
-
-@item remove_types
-Identical to @option{pass_types}, except the units in the given set
-removed and all others passed through.
-@end table
-
-Extradata is unchanged by this transformation, but note that if the stream
-contains inline parameter sets then the output may be unusable if they are
-removed.
-
-For example, to remove all non-VCL NAL units from an H.264 stream:
-@example
-ffmpeg -i INPUT -c:v copy -bsf:v 'filter_units=pass_types=1-5' OUTPUT
-@end example
-
-To remove all AUDs, SEI and filler from an H.265 stream:
-@example
-ffmpeg -i INPUT -c:v copy -bsf:v 'filter_units=remove_types=35|38-40' OUTPUT
-@end example
-
-@section hapqa_extract
-
-Extract Rgb or Alpha part of an HAPQA file, without recompression, in order to create an HAPQ or an HAPAlphaOnly file.
-
-@table @option
-@item texture
-Specifies the texture to keep.
-
-@table @option
-@item color
-@item alpha
-@end table
-
-@end table
-
-Convert HAPQA to HAPQ
-@example
-ffmpeg -i hapqa_inputfile.mov -c copy -bsf:v hapqa_extract=texture=color -tag:v HapY -metadata:s:v:0 encoder="HAPQ" hapq_file.mov
-@end example
-
-Convert HAPQA to HAPAlphaOnly
-@example
-ffmpeg -i hapqa_inputfile.mov -c copy -bsf:v hapqa_extract=texture=alpha -tag:v HapA -metadata:s:v:0 encoder="HAPAlpha Only" hapalphaonly_file.mov
-@end example
-
-@section h264_metadata
-
-Modify metadata embedded in an H.264 stream.
-
-@table @option
-@item aud
-Insert or remove AUD NAL units in all access units of the stream.
-
-@table @samp
-@item pass
-@item insert
-@item remove
-@end table
-
-Default is pass.
-
-@item sample_aspect_ratio
-Set the sample aspect ratio of the stream in the VUI parameters.
-See H.264 table E-1.
-
-@item overscan_appropriate_flag
-Set whether the stream is suitable for display using overscan
-or not (see H.264 section E.2.1).
-
-@item video_format
-@item video_full_range_flag
-Set the video format in the stream (see H.264 section E.2.1 and
-table E-2).
-
-@item colour_primaries
-@item transfer_characteristics
-@item matrix_coefficients
-Set the colour description in the stream (see H.264 section E.2.1
-and tables E-3, E-4 and E-5).
-
-@item chroma_sample_loc_type
-Set the chroma sample location in the stream (see H.264 section
-E.2.1 and figure E-1).
-
-@item tick_rate
-Set the tick rate (time_scale / num_units_in_tick) in the VUI
-parameters.  This is the smallest time unit representable in the
-stream, and in many cases represents the field rate of the stream
-(double the frame rate).
-@item fixed_frame_rate_flag
-Set whether the stream has fixed framerate - typically this indicates
-that the framerate is exactly half the tick rate, but the exact
-meaning is dependent on interlacing and the picture structure (see
-H.264 section E.2.1 and table E-6).
-@item zero_new_constraint_set_flags
-Zero constraint_set4_flag and constraint_set5_flag in the SPS. These
-bits were reserved in a previous version of the H.264 spec, and thus
-some hardware decoders require these to be zero. The result of zeroing
-this is still a valid bitstream.
-
-@item crop_left
-@item crop_right
-@item crop_top
-@item crop_bottom
-Set the frame cropping offsets in the SPS.  These values will replace
-the current ones if the stream is already cropped.
-
-These fields are set in pixels.  Note that some sizes may not be
-representable if the chroma is subsampled or the stream is interlaced
-(see H.264 section 7.4.2.1.1).
-
-@item sei_user_data
-Insert a string as SEI unregistered user data.  The argument must
-be of the form @emph{UUID+string}, where the UUID is as hex digits
-possibly separated by hyphens, and the string can be anything.
-
-For example, @samp{086f3693-b7b3-4f2c-9653-21492feee5b8+hello} will
-insert the string ``hello'' associated with the given UUID.
-
-@item delete_filler
-Deletes both filler NAL units and filler SEI messages.
-
-@item display_orientation
-Insert, extract or remove Display orientation SEI messages.
-See H.264 section D.1.27 and D.2.27 for syntax and semantics.
-
-@table @samp
-@item pass
-@item insert
-@item remove
-@item extract
-@end table
-
-Default is pass.
-
-Insert mode works in conjunction with @code{rotate} and @code{flip} options.
-Any pre-existing Display orientation messages will be removed in insert or remove mode.
-Extract mode attaches the display matrix to the packet as side data.
-
-@item rotate
-Set rotation in display orientation SEI (anticlockwise angle in degrees).
-Range is -360 to +360. Default is NaN.
-
-@item flip
-Set flip in display orientation SEI.
-
-@table @samp
-@item horizontal
-@item vertical
-@end table
-
-Default is unset.
-
-@item level
-Set the level in the SPS.  Refer to H.264 section A.3 and tables A-1
-to A-5.
-
-The argument must be the name of a level (for example, @samp{4.2}), a
-level_idc value (for example, @samp{42}), or the special name @samp{auto}
-indicating that the filter should attempt to guess the level from the
-input stream properties.
-
-@end table
-
 @section h264_mp4toannexb
 
 Convert an H.264 bitstream from length prefixed mode to start code
@@ -376,75 +111,6 @@ ffmpeg -i INPUT.mp4 -codec copy -bsf:v h264_mp4toannexb OUTPUT.ts
 Please note that this filter is auto-inserted for MPEG-TS (muxer
 @code{mpegts}) and raw H.264 (muxer @code{h264}) output formats.
 
-@section h264_redundant_pps
-
-This applies a specific fixup to some Blu-ray streams which contain
-redundant PPSs modifying irrelevant parameters of the stream which
-confuse other transformations which require correct extradata.
-
-@section hevc_metadata
-
-Modify metadata embedded in an HEVC stream.
-
-@table @option
-@item aud
-Insert or remove AUD NAL units in all access units of the stream.
-
-@table @samp
-@item insert
-@item remove
-@end table
-
-@item sample_aspect_ratio
-Set the sample aspect ratio in the stream in the VUI parameters.
-
-@item video_format
-@item video_full_range_flag
-Set the video format in the stream (see H.265 section E.3.1 and
-table E.2).
-
-@item colour_primaries
-@item transfer_characteristics
-@item matrix_coefficients
-Set the colour description in the stream (see H.265 section E.3.1
-and tables E.3, E.4 and E.5).
-
-@item chroma_sample_loc_type
-Set the chroma sample location in the stream (see H.265 section
-E.3.1 and figure E.1).
-
-@item tick_rate
-Set the tick rate in the VPS and VUI parameters (time_scale /
-num_units_in_tick). Combined with @option{num_ticks_poc_diff_one}, this can
-set a constant framerate in the stream.  Note that it is likely to be
-overridden by container parameters when the stream is in a container.
-
-@item num_ticks_poc_diff_one
-Set poc_proportional_to_timing_flag in VPS and VUI and use this value
-to set num_ticks_poc_diff_one_minus1 (see H.265 sections 7.4.3.1 and
-E.3.1).  Ignored if @option{tick_rate} is not also set.
-
-@item crop_left
-@item crop_right
-@item crop_top
-@item crop_bottom
-Set the conformance window cropping offsets in the SPS.  These values
-will replace the current ones if the stream is already cropped.
-
-These fields are set in pixels.  Note that some sizes may not be
-representable if the chroma is subsampled (H.265 section 7.4.3.2.1).
-
-@item level
-Set the level in the VPS and SPS.  See H.265 section A.4 and tables
-A.6 and A.7.
-
-The argument must be the name of a level (for example, @samp{5.1}), a
-@emph{general_level_idc} value (for example, @samp{153} for level 5.1),
-or the special name @samp{auto} indicating that the filter should
-attempt to guess the level from the input stream properties.
-
-@end table
-
 @section hevc_mp4toannexb
 
 Convert an HEVC/H.265 bitstream from length prefixed mode to start code
@@ -532,42 +198,6 @@ See also the @ref{text2movsub} filter.
 
 Decompress non-standard compressed MP3 audio headers.
 
-@section mpeg2_metadata
-
-Modify metadata embedded in an MPEG-2 stream.
-
-@table @option
-@item display_aspect_ratio
-Set the display aspect ratio in the stream.
-
-The following fixed values are supported:
-@table @option
-@item 4/3
-@item 16/9
-@item 221/100
-@end table
-Any other value will result in square pixels being signalled instead
-(see H.262 section 6.3.3 and table 6-3).
-
-@item frame_rate
-Set the frame rate in the stream.  This is constructed from a table
-of known values combined with a small multiplier and divisor - if
-the supplied value is not exactly representable, the nearest
-representable value will be used instead (see H.262 section 6.3.3
-and table 6-4).
-
-@item video_format
-Set the video format in the stream (see H.262 section 6.3.6 and
-table 6-6).
-
-@item colour_primaries
-@item transfer_characteristics
-@item matrix_coefficients
-Set the colour description in the stream (see H.262 section 6.3.6
-and tables 6-7, 6-8 and 6-9).
-
-@end table
-
 @section mpeg4_unpack_bframes
 
 Unpack DivX-style packed B-frames.
@@ -590,190 +220,19 @@ ffmpeg -i INPUT.avi -codec copy -bsf:v mpeg4_unpack_bframes OUTPUT.avi
 
 @section noise
 
-Damages the contents of packets or simply drops them without damaging the
-container. Can be used for fuzzing or testing error resilience/concealment.
+Damages the contents of packets without damaging the container. Can be
+used for fuzzing or testing error resilience/concealment.
 
 Parameters:
-@table @option
-@item amount
-Accepts an expression whose evaluation per-packet determines how often bytes in that
-packet will be modified. A value below 0 will result in a variable frequency.
-Default is 0 which results in no modification. However, if neither amount nor drop is specified,
-amount will be set to @var{-1}. See below for accepted variables.
-@item drop
-Accepts an expression evaluated per-packet whose value determines whether that packet is dropped.
-Evaluation to a positive value results in the packet being dropped. Evaluation to a negative
-value results in a variable chance of it being dropped, roughly inverse in proportion to the magnitude
-of the value. Default is 0 which results in no drops. See below for accepted variables.
-@item dropamount
-Accepts a non-negative integer, which assigns a variable chance of it being dropped, roughly inverse
-in proportion to the value. Default is 0 which results in no drops. This option is kept for backwards
-compatibility and is equivalent to setting drop to a negative value with the same magnitude
-i.e. @code{dropamount=4} is the same as @code{drop=-4}. Ignored if drop is also specified.
-@end table
+A numeral string, whose value is related to how often output bytes will
+be modified. Therefore, values below or equal to 0 are forbidden, and
+the lower the more frequent bytes will be modified, with 1 meaning
+every byte is modified.
 
-Both @code{amount} and @code{drop} accept expressions containing the following variables:
-
-@table @samp
-@item n
-The index of the packet, starting from zero.
-@item tb
-The timebase for packet timestamps.
-@item pts
-Packet presentation timestamp.
-@item dts
-Packet decoding timestamp.
-@item nopts
-Constant representing AV_NOPTS_VALUE.
-@item startpts
-First non-AV_NOPTS_VALUE PTS seen in the stream.
-@item startdts
-First non-AV_NOPTS_VALUE DTS seen in the stream.
-@item duration
-@itemx d
-Packet duration, in timebase units.
-@item pos
-Packet position in input; may be -1 when unknown or not set.
-@item size
-Packet size, in bytes.
-@item key
-Whether packet is marked as a keyframe.
-@item state
-A pseudo random integer, primarily derived from the content of packet payload.
-@end table
-
-@subsection Examples
-Apply modification to every byte but don't drop any packets.
 @example
-ffmpeg -i INPUT -c copy -bsf noise=1 output.mkv
-@end example
-
-Drop every video packet not marked as a keyframe after timestamp 30s but do not
-modify any of the remaining packets.
-@example
-ffmpeg -i INPUT -c copy -bsf:v noise=drop='gt(t\,30)*not(key)' output.mkv
-@end example
-
-Drop one second of audio every 10 seconds and add some random noise to the rest.
-@example
-ffmpeg -i INPUT -c copy -bsf:a noise=amount=-1:drop='between(mod(t\,10)\,9\,10)' output.mkv
-@end example
-
-@section null
-This bitstream filter passes the packets through unchanged.
-
-@section pcm_rechunk
-
-Repacketize PCM audio to a fixed number of samples per packet or a fixed packet
-rate per second. This is similar to the @ref{asetnsamples,,asetnsamples audio
-filter,ffmpeg-filters} but works on audio packets instead of audio frames.
-
-@table @option
-@item nb_out_samples, n
-Set the number of samples per each output audio packet. The number is intended
-as the number of samples @emph{per each channel}. Default value is 1024.
-
-@item pad, p
-If set to 1, the filter will pad the last audio packet with silence, so that it
-will contain the same number of samples (or roughly the same number of samples,
-see @option{frame_rate}) as the previous ones. Default value is 1.
-
-@item frame_rate, r
-This option makes the filter output a fixed number of packets per second instead
-of a fixed number of samples per packet. If the audio sample rate is not
-divisible by the frame rate then the number of samples will not be constant but
-will vary slightly so that each packet will start as close to the frame
-boundary as possible. Using this option has precedence over @option{nb_out_samples}.
-@end table
-
-You can generate the well known 1602-1601-1602-1601-1602 pattern of 48kHz audio
-for NTSC frame rate using the @option{frame_rate} option.
-@example
-ffmpeg -f lavfi -i sine=r=48000:d=1 -c pcm_s16le -bsf pcm_rechunk=r=30000/1001 -f framecrc -
-@end example
-
-@section pgs_frame_merge
-
-Merge a sequence of PGS Subtitle segments ending with an "end of display set"
-segment into a single packet.
-
-This is required by some containers that support PGS subtitles
-(muxer @code{matroska}).
-
-@section prores_metadata
-
-Modify color property metadata embedded in prores stream.
-
-@table @option
-@item color_primaries
-Set the color primaries.
-Available values are:
-
-@table @samp
-@item auto
-Keep the same color primaries property (default).
-
-@item unknown
-@item bt709
-@item bt470bg
-BT601 625
-
-@item smpte170m
-BT601 525
-
-@item bt2020
-@item smpte431
-DCI P3
-
-@item smpte432
-P3 D65
-
-@end table
-
-@item transfer_characteristics
-Set the color transfer.
-Available values are:
-
-@table @samp
-@item auto
-Keep the same transfer characteristics property (default).
-
-@item unknown
-@item bt709
-BT 601, BT 709, BT 2020
-@item smpte2084
-SMPTE ST 2084
-@item arib-std-b67
-ARIB STD-B67
-@end table
-
-
-@item matrix_coefficients
-Set the matrix coefficient.
-Available values are:
-
-@table @samp
-@item auto
-Keep the same colorspace property (default).
-
-@item unknown
-@item bt709
-@item smpte170m
-BT 601
-
-@item bt2020nc
-@end table
-@end table
-
-Set Rec709 colorspace for each frame of the file
-@example
-ffmpeg -i INPUT -c copy -bsf:v prores_metadata=color_primaries=bt709:color_trc=bt709:colorspace=bt709 output.mov
-@end example
-
-Set Hybrid Log-Gamma parameters for each frame of the file
-@example
-ffmpeg -i INPUT -c copy -bsf:v prores_metadata=color_primaries=bt2020:color_trc=arib-std-b67:colorspace=bt2020nc output.mov
+ffmpeg -i INPUT -c copy -bsf noise[=1] output.mkv
 @end example
+applies the modification to every byte.
 
 @section remove_extra
 
@@ -797,91 +256,6 @@ Remove extradata from all frames.
 @end table
 @end table
 
-@section setts
-Set PTS and DTS in packets.
-
-It accepts the following parameters:
-@table @option
-@item ts
-@item pts
-@item dts
-Set expressions for PTS, DTS or both.
-@item duration
-Set expression for duration.
-@item time_base
-Set output time base.
-@end table
-
-The expressions are evaluated through the eval API and can contain the following
-constants:
-
-@table @option
-@item N
-The count of the input packet. Starting from 0.
-
-@item TS
-The demux timestamp in input in case of @code{ts} or @code{dts} option or presentation
-timestamp in case of @code{pts} option.
-
-@item POS
-The original position in the file of the packet, or undefined if undefined
-for the current packet
-
-@item DTS
-The demux timestamp in input.
-
-@item PTS
-The presentation timestamp in input.
-
-@item DURATION
-The duration in input.
-
-@item STARTDTS
-The DTS of the first packet.
-
-@item STARTPTS
-The PTS of the first packet.
-
-@item PREV_INDTS
-The previous input DTS.
-
-@item PREV_INPTS
-The previous input PTS.
-
-@item PREV_INDURATION
-The previous input duration.
-
-@item PREV_OUTDTS
-The previous output DTS.
-
-@item PREV_OUTPTS
-The previous output PTS.
-
-@item PREV_OUTDURATION
-The previous output duration.
-
-@item NEXT_DTS
-The next input DTS.
-
-@item NEXT_PTS
-The next input PTS.
-
-@item NEXT_DURATION
-The next input duration.
-
-@item TB
-The timebase of stream packet belongs.
-
-@item TB_OUT
-The output timebase.
-
-@item SR
-The sample rate of stream packet belongs.
-
-@item NOPTS
-The AV_NOPTS_VALUE constant.
-@end table
-
 @anchor{text2movsub}
 @section text2movsub
 
@@ -890,60 +264,10 @@ codec) with metadata headers.
 
 See also the @ref{mov2textsub} filter.
 
-@section trace_headers
-
-Log trace output containing all syntax elements in the coded stream
-headers (everything above the level of individual coded blocks).
-This can be useful for debugging low-level stream issues.
-
-Supports AV1, H.264, H.265, (M)JPEG, MPEG-2 and VP9, but depending
-on the build only a subset of these may be available.
-
-@section truehd_core
-
-Extract the core from a TrueHD stream, dropping ATMOS data.
-
-@section vp9_metadata
-
-Modify metadata embedded in a VP9 stream.
-
-@table @option
-@item color_space
-Set the color space value in the frame header.  Note that any frame
-set to RGB will be implicitly set to PC range and that RGB is
-incompatible with profiles 0 and 2.
-@table @samp
-@item unknown
-@item bt601
-@item bt709
-@item smpte170
-@item smpte240
-@item bt2020
-@item rgb
-@end table
-
-@item color_range
-Set the color range value in the frame header.  Note that any value
-imposed by the color space will take precedence over this value.
-@table @samp
-@item tv
-@item pc
-@end table
-@end table
-
 @section vp9_superframe
 
 Merge VP9 invisible (alt-ref) frames back into VP9 superframes. This
 fixes merging of split/segmented VP9 streams where the alt-ref frame
 was split from its visible counterpart.
 
-@section vp9_superframe_split
-
-Split VP9 superframes into single frames.
-
-@section vp9_raw_reorder
-
-Given a VP9 stream with correct timestamps but possibly out of order,
-insert additional show-existing-frame packets to correct the ordering.
-
 @c man end BITSTREAM FILTERS

doc/build_system.txt

@@ -36,20 +36,15 @@ install
 examples
     Build all examples located in doc/examples.
 
-checkheaders
-    Check headers dependencies.
+libavformat/output-example
+    Build the libavformat basic example.
 
-alltools
-    Build all tools in tools directory.
+libswscale/swscale-test
+    Build the swscale self-test (useful also as an example).
 
 config
     Reconfigure the project with the current configuration.
 
-tools/target_dec_<decoder>_fuzzer
-    Build fuzzer to fuzz the specified decoder.
-
-tools/target_bsf_<filter>_fuzzer
-    Build fuzzer to fuzz the specified bitstream filter.
 
 Useful standard make commands:
 make -t <target>

doc/codecs.texi

@@ -44,20 +44,26 @@ Use 1/4 pel motion compensation.
 Use loop filter.
 @item qscale
 Use fixed qscale.
+@item gmc
+Use gmc.
+@item mv0
+Always try a mb with mv=<0,0>.
+@item input_preserved
+
 @item pass1
 Use internal 2pass ratecontrol in first pass mode.
 @item pass2
 Use internal 2pass ratecontrol in second pass mode.
 @item gray
 Only decode/encode grayscale.
+@item emu_edge
+Do not draw edges.
 @item psnr
 Set error[?] variables during encoding.
 @item truncated
-Input bitstream might be randomly truncated.
-@item drop_changed
-Don't output frames whose parameters differ from first decoded frame in stream.
-Error AVERROR_INPUT_CHANGED is returned when a frame is dropped.
 
+@item naq
+Normalize adaptive quantization.
 @item ildct
 Use interlaced DCT.
 @item low_delay
@@ -70,14 +76,50 @@ This ensures that file and data checksums are reproducible and match between
 platforms. Its primary use is for regression testing.
 @item aic
 Apply H263 advanced intra coding / mpeg4 ac prediction.
+@item cbp
+Deprecated, use mpegvideo private options instead.
+@item qprd
+Deprecated, use mpegvideo private options instead.
 @item ilme
 Apply interlaced motion estimation.
 @item cgop
 Use closed gop.
-@item output_corrupt
-Output even potentially corrupted frames.
 @end table
 
+@item me_method @var{integer} (@emph{encoding,video})
+Set motion estimation method.
+
+Possible values:
+@table @samp
+@item zero
+zero motion estimation (fastest)
+@item full
+full motion estimation (slowest)
+@item epzs
+EPZS motion estimation (default)
+@item esa
+esa motion estimation (alias for full)
+@item tesa
+tesa motion estimation
+@item dia
+dia motion estimation (alias for epzs)
+@item log
+log motion estimation
+@item phods
+phods motion estimation
+@item x1
+X1 motion estimation
+@item hex
+hex motion estimation
+@item umh
+umh motion estimation
+@item iter
+iter motion estimation
+@end table
+
+@item extradata_size @var{integer}
+Set extradata size.
+
 @item time_base @var{rational number}
 Set codec time base.
 
@@ -144,6 +186,24 @@ Default value is 0.
 @item b_qfactor @var{float} (@emph{encoding,video})
 Set qp factor between P and B frames.
 
+@item rc_strategy @var{integer} (@emph{encoding,video})
+Set ratecontrol method.
+
+@item b_strategy @var{integer} (@emph{encoding,video})
+Set strategy to choose between I/P/B-frames.
+
+@item ps @var{integer} (@emph{encoding,video})
+Set RTP payload size in bytes.
+
+@item mv_bits @var{integer}
+@item header_bits @var{integer}
+@item i_tex_bits @var{integer}
+@item p_tex_bits @var{integer}
+@item i_count @var{integer}
+@item p_count @var{integer}
+@item skip_count @var{integer}
+@item misc_bits @var{integer}
+@item frame_bits @var{integer}
 @item codec_tag @var{integer}
 @item bug @var{flags} (@emph{decoding,video})
 Workaround not auto detected encoder bugs.
@@ -152,6 +212,8 @@ Possible values:
 @table @samp
 @item autodetect
 
+@item old_msmpeg4
+some old lavc generated msmpeg4v3 files (no autodetection)
 @item xvid_ilace
 Xvid interlacing bug (autodetected if fourcc==XVIX)
 @item ump4
@@ -160,6 +222,8 @@ Xvid interlacing bug (autodetected if fourcc==XVIX)
 padding bug (autodetected)
 @item amv
 
+@item ac_vlc
+illegal vlc bug (autodetected per fourcc)
 @item qpel_chroma
 
 @item std_qpel
@@ -180,6 +244,14 @@ Workaround various bugs in microsoft broken decoders.
 trancated frames
 @end table
 
+@item lelim @var{integer} (@emph{encoding,video})
+Set single coefficient elimination threshold for luminance (negative
+values also consider DC coefficient).
+
+@item celim @var{integer} (@emph{encoding,video})
+Set single coefficient elimination threshold for chrominance (negative
+values also consider dc coefficient)
+
 @item strict @var{integer} (@emph{decoding/encoding,audio,video})
 Specify how strictly to follow the standards.
 
@@ -233,8 +305,29 @@ consider things that a sane encoder should not do as an error
 
 @item block_align @var{integer}
 
+@item mpeg_quant @var{integer} (@emph{encoding,video})
+Use MPEG quantizers instead of H.263.
+
+@item qsquish @var{float} (@emph{encoding,video})
+How to keep quantizer between qmin and qmax (0 = clip, 1 = use
+differentiable function).
+
+@item rc_qmod_amp @var{float} (@emph{encoding,video})
+Set experimental quantizer modulation.
+
+@item rc_qmod_freq @var{integer} (@emph{encoding,video})
+Set experimental quantizer modulation.
+
 @item rc_override_count @var{integer}
 
+@item rc_eq @var{string} (@emph{encoding,video})
+Set rate control equation. When computing the expression, besides the
+standard functions defined in the section 'Expression Evaluation', the
+following functions are available: bits2qp(bits), qp2bits(qp). Also
+the following constants are available: iTex pTex tex mv fCode iCount
+mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex
+avgTex.
+
 @item maxrate @var{integer} (@emph{encoding,audio,video})
 Set max bitrate tolerance (in bits/s). Requires bufsize to be set.
 
@@ -245,12 +338,18 @@ encode. It is of little use elsewise.
 @item bufsize @var{integer} (@emph{encoding,audio,video})
 Set ratecontrol buffer size (in bits).
 
+@item rc_buf_aggressivity @var{float} (@emph{encoding,video})
+Currently useless.
+
 @item i_qfactor @var{float} (@emph{encoding,video})
 Set QP factor between P and I frames.
 
 @item i_qoffset @var{float} (@emph{encoding,video})
 Set QP offset between P and I frames.
 
+@item rc_init_cplx @var{float} (@emph{encoding,video})
+Set initial complexity for 1-pass encoding.
+
 @item dct @var{integer} (@emph{encoding,video})
 Set DCT algorithm.
 
@@ -315,7 +414,11 @@ Automatically pick a IDCT compatible with the simple one
 
 @item simpleneon
 
-@item xvid
+@item simplealpha
+
+@item ipp
+
+@item xvidmmx
 
 @item faani
 floating point AAN IDCT
@@ -338,6 +441,19 @@ favor predicting from the previous frame instead of the current
 
 @item bits_per_coded_sample @var{integer}
 
+@item pred @var{integer} (@emph{encoding,video})
+Set prediction method.
+
+Possible values:
+@table @samp
+@item left
+
+@item plane
+
+@item median
+
+@end table
+
 @item aspect @var{rational number} (@emph{encoding,video})
 Set sample aspect ratio.
 
@@ -359,6 +475,8 @@ rate control
 macroblock (MB) type
 @item qp
 per-block quantization parameter (QP)
+@item mv
+motion vector
 @item dct_coeff
 
 @item green_metadata
@@ -368,12 +486,18 @@ display complexity metadata for the upcoming frame, GoP or for a given duration.
 
 @item startcode
 
+@item pts
+
 @item er
 error recognition
 @item mmco
 memory management control operations (H.264)
 @item bugs
 
+@item vis_qp
+visualize quantization parameter (QP), lower QP are tinted greener
+@item vis_mb_type
+visualize block types
 @item buffers
 picture buffer allocations
 @item thread_ops
@@ -382,6 +506,21 @@ threading operations
 skip motion compensation
 @end table
 
+@item vismv @var{integer} (@emph{decoding,video})
+Visualize motion vectors (MVs).
+
+This option is deprecated, see the codecview filter instead.
+
+Possible values:
+@table @samp
+@item pf
+forward predicted MVs of P-frames
+@item bf
+forward predicted MVs of B-frames
+@item bb
+backward predicted MVs of B-frames
+@end table
+
 @item cmp @var{integer} (@emph{encoding,video})
 Set full pel me compare function.
 
@@ -532,28 +671,13 @@ noise preserving sum of squared differences
 
 @item dia_size @var{integer} (@emph{encoding,video})
 Set diamond type & size for motion estimation.
-@table @samp
-@item (1024, INT_MAX)
-full motion estimation(slowest)
-@item (768, 1024]
-umh motion estimation
-@item (512, 768]
-hex motion estimation
-@item (256, 512]
-l2s diamond motion estimation
-@item [2,256]
-var diamond motion estimation
-@item (-1,  2)
-small diamond motion estimation
-@item -1
-funny diamond motion estimation
-@item (INT_MIN, -1)
-sab diamond motion estimation
-@end table
 
 @item last_pred @var{integer} (@emph{encoding,video})
 Set amount of motion predictors from the previous frame.
 
+@item preme @var{integer} (@emph{encoding,video})
+Set pre motion estimation.
+
 @item precmp @var{integer} (@emph{encoding,video})
 Set pre motion estimation compare function.
 
@@ -597,13 +721,44 @@ Set diamond type & size for motion estimation pre-pass.
 @item subq @var{integer} (@emph{encoding,video})
 Set sub pel motion estimation quality.
 
+@item dtg_active_format @var{integer}
+
 @item me_range @var{integer} (@emph{encoding,video})
 Set limit motion vectors range (1023 for DivX player).
 
+@item ibias @var{integer} (@emph{encoding,video})
+Set intra quant bias.
+
+@item pbias @var{integer} (@emph{encoding,video})
+Set inter quant bias.
+
+@item color_table_id @var{integer}
+
 @item global_quality @var{integer} (@emph{encoding,audio,video})
 
+@item coder @var{integer} (@emph{encoding,video})
+
+Possible values:
+@table @samp
+@item vlc
+variable length coder / huffman coder
+@item ac
+arithmetic coder
+@item raw
+raw (no encoding)
+@item rle
+run-length coder
+@item deflate
+deflate-based coder
+@end table
+
+@item context @var{integer} (@emph{encoding,video})
+Set context model.
+
 @item slice_flags @var{integer}
 
+@item xvmc_acceleration @var{integer}
+
 @item mbd @var{integer} (@emph{encoding,video})
 Set macroblock decision algorithm (high quality mode).
 
@@ -617,16 +772,32 @@ use fewest bits
 use best rate distortion
 @end table
 
+@item stream_codec_tag @var{integer}
+
+@item sc_threshold @var{integer} (@emph{encoding,video})
+Set scene change threshold.
+
+@item lmin @var{integer} (@emph{encoding,video})
+Set min lagrange factor (VBR).
+
+@item lmax @var{integer} (@emph{encoding,video})
+Set max lagrange factor (VBR).
+
+@item nr @var{integer} (@emph{encoding,video})
+Set noise reduction.
+
 @item rc_init_occupancy @var{integer} (@emph{encoding,video})
 Set number of bits which should be loaded into the rc buffer before
 decoding starts.
 
-@item flags2 @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
+@item flags2 @var{flags} (@emph{decoding/encoding,audio,video})
 
 Possible values:
 @table @samp
 @item fast
 Allow non spec compliant speedup tricks.
+@item sgop
+Deprecated, use mpegvideo private options instead.
 @item noout
 Skip bitstream encoding.
 @item ignorecrop
@@ -637,34 +808,17 @@ Place global headers at every keyframe instead of in extradata.
 Frame data might be split into multiple chunks.
 @item showall
 Show all frames before the first keyframe.
+@item skiprd
+Deprecated, use mpegvideo private options instead.
 @item export_mvs
 Export motion vectors into frame side-data (see @code{AV_FRAME_DATA_MOTION_VECTORS})
 for codecs that support it. See also @file{doc/examples/export_mvs.c}.
-@item skip_manual
-Do not skip samples and export skip information as frame side data.
-@item ass_ro_flush_noop
-Do not reset ASS ReadOrder field on flush.
-@item icc_profiles
-Generate/parse embedded ICC profiles from/to colorimetry tags.
 @end table
 
-@item export_side_data @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
+@item error @var{integer} (@emph{encoding,video})
 
-Possible values:
-@table @samp
-@item mvs
-Export motion vectors into frame side-data (see @code{AV_FRAME_DATA_MOTION_VECTORS})
-for codecs that support it. See also @file{doc/examples/export_mvs.c}.
-@item prft
-Export encoder Producer Reference Time into packet side-data (see @code{AV_PKT_DATA_PRFT})
-for codecs that support it.
-@item venc_params
-Export video encoding parameters through frame side data (see @code{AV_FRAME_DATA_VIDEO_ENC_PARAMS})
-for codecs that support it. At present, those are H.264 and VP9.
-@item film_grain
-Export film grain parameters through frame side data (see @code{AV_FRAME_DATA_FILM_GRAIN_PARAMS}).
-Supported at present by AV1 decoders.
-@end table
+@item qns @var{integer} (@emph{encoding,video})
+Deprecated, use mpegvideo private options instead.
 
 @item threads @var{integer} (@emph{decoding/encoding,video})
 Set the number of threads to be used, in case the selected codec
@@ -678,6 +832,12 @@ automatically select the number of threads to set
 
 Default value is @samp{auto}.
 
+@item me_threshold @var{integer} (@emph{encoding,video})
+Set motion estimation threshold.
+
+@item mb_threshold @var{integer} (@emph{encoding,video})
+Set macroblock threshold.
+
 @item dc @var{integer} (@emph{encoding,video})
 Set intra_dc_precision.
 
@@ -692,29 +852,122 @@ Set number of macroblock rows at the bottom which are skipped.
 
 @item profile @var{integer} (@emph{encoding,audio,video})
 
-Set encoder codec profile. Default value is @samp{unknown}. Encoder specific
-profiles are documented in the relevant encoder documentation.
+Possible values:
+@table @samp
+@item unknown
+
+@item aac_main
+
+@item aac_low
+
+@item aac_ssr
+
+@item aac_ltp
+
+@item aac_he
+
+@item aac_he_v2
+
+@item aac_ld
+
+@item aac_eld
+
+@item mpeg2_aac_low
+
+@item mpeg2_aac_he
+
+@item mpeg4_sp
+
+@item mpeg4_core
+
+@item mpeg4_main
+
+@item mpeg4_asp
+
+@item dts
+
+@item dts_es
+
+@item dts_96_24
+
+@item dts_hd_hra
+
+@item dts_hd_ma
+
+@end table
 
 @item level @var{integer} (@emph{encoding,audio,video})
 
-Set the encoder level. This level depends on the specific codec, and
-might correspond to the profile level. It is set by default to
-@samp{unknown}.
-
 Possible values:
 @table @samp
 @item unknown
+
 @end table
 
 @item lowres @var{integer} (@emph{decoding,audio,video})
 Decode at 1= 1/2, 2=1/4, 3=1/8 resolutions.
 
+@item skip_threshold @var{integer} (@emph{encoding,video})
+Set frame skip threshold.
+
+@item skip_factor @var{integer} (@emph{encoding,video})
+Set frame skip factor.
+
+@item skip_exp @var{integer} (@emph{encoding,video})
+Set frame skip exponent.
+Negative values behave identical to the corresponding positive ones, except
+that the score is normalized.
+Positive values exist primarily for compatibility reasons and are not so useful.
+
+@item skipcmp @var{integer} (@emph{encoding,video})
+Set frame skip compare function.
+
+Possible values:
+@table @samp
+@item sad
+sum of absolute differences, fast (default)
+@item sse
+sum of squared errors
+@item satd
+sum of absolute Hadamard transformed differences
+@item dct
+sum of absolute DCT transformed differences
+@item psnr
+sum of squared quantization errors (avoid, low quality)
+@item bit
+number of bits needed for the block
+@item rd
+rate distortion optimal, slow
+@item zero
+0
+@item vsad
+sum of absolute vertical differences
+@item vsse
+sum of squared vertical differences
+@item nsse
+noise preserving sum of squared differences
+@item w53
+5/3 wavelet, only used in snow
+@item w97
+9/7 wavelet, only used in snow
+@item dctmax
+
+@item chroma
+
+@end table
+
+@item border_mask @var{float} (@emph{encoding,video})
+Increase the quantizer for macroblocks close to borders.
+
 @item mblmin @var{integer} (@emph{encoding,video})
 Set min macroblock lagrange factor (VBR).
 
 @item mblmax @var{integer} (@emph{encoding,video})
 Set max macroblock lagrange factor (VBR).
 
+@item mepc @var{integer} (@emph{encoding,video})
+Set motion estimation bitrate penalty compensation (1.0 = 256).
+
 @item skip_loop_filter @var{integer} (@emph{decoding,video})
 @item skip_idct        @var{integer} (@emph{decoding,video})
 @item skip_frame       @var{integer} (@emph{decoding,video})
@@ -742,9 +995,6 @@ Discard all bidirectional frames.
 @item nokey
 Discard all frames excepts keyframes.
 
-@item nointra
-Discard all frames except I frames.
-
 @item all
 Discard all frames.
 @end table
@@ -754,17 +1004,38 @@ Default value is @samp{default}.
 @item bidir_refine @var{integer} (@emph{encoding,video})
 Refine the two motion vectors used in bidirectional macroblocks.
 
+@item brd_scale @var{integer} (@emph{encoding,video})
+Downscale frames for dynamic B-frame decision.
+
 @item keyint_min @var{integer} (@emph{encoding,video})
 Set minimum interval between IDR-frames.
 
 @item refs @var{integer} (@emph{encoding,video})
 Set reference frames to consider for motion compensation.
 
+@item chromaoffset @var{integer} (@emph{encoding,video})
+Set chroma qp offset from luma.
+
 @item trellis @var{integer} (@emph{encoding,audio,video})
 Set rate-distortion optimal quantization.
 
+@item sc_factor @var{integer} (@emph{encoding,video})
+Set value multiplied by qscale for each frame and added to
+scene_change_score.
+
 @item mv0_threshold @var{integer} (@emph{encoding,video})
+@item b_sensitivity @var{integer} (@emph{encoding,video})
+Adjust sensitivity of b_frame_strategy 1.
+
 @item compression_level @var{integer} (@emph{encoding,audio,video})
+@item min_prediction_order @var{integer} (@emph{encoding,audio})
+@item max_prediction_order @var{integer} (@emph{encoding,audio})
+@item timecode_frame_start @var{integer} (@emph{encoding,video})
+Set GOP timecode frame start number, in non drop frame format.
+
+@item request_channels @var{integer} (@emph{decoding,audio})
+Set desired number of audio channels.
+
 @item bits_per_raw_sample @var{integer}
 @item channel_layout @var{integer} (@emph{decoding/encoding,audio})
 
@@ -778,6 +1049,7 @@ Possible values:
 @end table
 @item rc_max_vbv_use @var{float} (@emph{encoding,video})
 @item rc_min_vbv_use @var{float} (@emph{encoding,video})
+@item ticks_per_frame @var{integer} (@emph{decoding/encoding,audio,video})
 
 @item color_primaries @var{integer} (@emph{decoding/encoding,video})
 Possible values:
@@ -877,12 +1149,6 @@ BT.2020 NCL
 BT.2020 CL
 @item smpte2085
 SMPTE 2085
-@item chroma-derived-nc
-Chroma-derived NCL
-@item chroma-derived-c
-Chroma-derived CL
-@item ictcp
-ICtCp
 @end table
 
 @item color_range @var{integer} (@emph{decoding/encoding,video})
@@ -892,11 +1158,9 @@ Possible values:
 @table @samp
 @item tv
 @item mpeg
-@item limited
 MPEG (219*2^(n-8))
 @item pc
 @item jpeg
-@item full
 JPEG (2^n-1)
 @end table
 
@@ -994,7 +1258,7 @@ Interlaced video, top coded first, bottom displayed first
 Interlaced video, bottom coded first, top displayed first
 @end table
 
-@item skip_alpha @var{bool} (@emph{decoding,video})
+@item skip_alpha @var{integer} (@emph{decoding,video})
 Set to 1 to disable processing alpha (transparency). This works like the
 @samp{gray} flag in the @option{flags} option which skips chroma information
 instead of alpha. Default is 0.
@@ -1005,7 +1269,7 @@ instead of alpha. Default is 0.
 @item dump_separator @var{string} (@emph{input})
 Separator used to separate the fields printed on the command line about the
 Stream parameters.
-For example, to separate the fields with newlines and indentation:
+For example to separate the fields with newlines and indention:
 @example
 ffprobe -dump_separator "
                           "  -i ~/videos/matrixbench_mpeg2.mpg
@@ -1015,16 +1279,6 @@ ffprobe -dump_separator "
 Maximum number of pixels per image. This value can be used to avoid out of
 memory failures due to large images.
 
-@item apply_cropping @var{bool} (@emph{decoding,video})
-Enable cropping if cropping parameters are multiples of the required
-alignment for the left and top parameters. If the alignment is not met the
-cropping will be partially applied to maintain alignment.
-Default is 1 (enabled).
-Note: The required alignment depends on if @code{AV_CODEC_FLAG_UNALIGNED} is set and the
-CPU. @code{AV_CODEC_FLAG_UNALIGNED} cannot be changed from the command line. Also hardware
-decoders will not apply left/top Cropping.
-
-
 @end table
 
 @c man end CODEC OPTIONS

doc/community.texi

@@ -1,175 +0,0 @@
-\input texinfo @c -*- texinfo -*-
-@documentencoding UTF-8
-
-@settitle Community
-@titlepage
-@center @titlefont{Community}
-@end titlepage
-
-@top
-
-@contents
-
-@anchor{Organisation}
-@chapter Organisation
-
-The FFmpeg project is organized through a community working on global consensus.
-
-Decisions are taken by the ensemble of active members, through voting and are aided by two committees.
-
-@anchor{General Assembly}
-@chapter General Assembly
-
-The ensemble of active members is called the General Assembly (GA).
-
-The General Assembly is sovereign and legitimate for all its decisions regarding the FFmpeg project.
-
-The General Assembly is made up of active contributors.
-
-Contributors are considered "active contributors" if they have pushed more than 20 patches in the last 36 months in the main FFmpeg repository, or if they have been voted in by the GA.
-
-Additional members are added to the General Assembly through a vote after proposal by a member of the General Assembly. They are part of the GA for two years, after which they need a confirmation by the GA.
-
-A script to generate the current members of the general assembly (minus members voted in) can be found in `tools/general_assembly.pl`.
-
-@anchor{Voting}
-@chapter Voting
-
-Voting is done using a ranked voting system, currently running on https://vote.ffmpeg.org/ .
-
-Majority vote means more than 50% of the expressed ballots.
-
-@anchor{Technical Committee}
-@chapter Technical Committee
-
-The Technical Committee (TC) is here to arbitrate and make decisions when technical conflicts occur in the project. They will consider the merits of all the positions, judge them and make a decision.
-
-The TC resolves technical conflicts but is not a technical steering committee.
-
-Decisions by the TC are binding for all the contributors.
-
-Decisions made by the TC can be re-opened after 1 year or by a majority vote of the General Assembly, requested by one of the member of the GA.
-
-The TC is elected by the General Assembly for a duration of 1 year, and is composed of 5 members. Members can be re-elected if they wish. A majority vote in the General Assembly can trigger a new election of the TC.
-
-The members of the TC can be elected from outside of the GA. Candidates for election can either be suggested or self-nominated.
-
-The conflict resolution process is detailed in the resolution process document.
-
-The TC can be contacted at <tc@@ffmpeg>.
-
-@anchor{Resolution Process}
-@section Resolution Process
-
-The Technical Committee (TC) is here to arbitrate and make decisions when technical conflicts occur in the project.
-
-The TC main role is to resolve technical conflicts. It is therefore not a technical steering committee, but it is understood that some decisions might impact the future of the project.
-
-@subsection Seizing
-
-The TC can take possession of any technical matter that it sees fit.
-
-To involve the TC in a matter, email tc@ or CC them on an ongoing discussion.
-
-As members of TC are developers, they also can email tc@ to raise an issue.
-@subsection Announcement
-
-The TC, once seized, must announce itself on the main mailing list, with a [TC] tag.
-
-The TC has 2 modes of operation: a RFC one and an internal one.
-
-If the TC thinks it needs the input from the larger community, the TC can call for a RFC. Else, it can decide by itself.
-
-If the disagreement involves a member of the TC, that member should recuse themselves from the decision.
-
-The decision to use a RFC process or an internal discussion is a discretionary decision of the TC.
-
-The TC can also reject a seizure for a few reasons such as: the matter was not discussed enough previously; it lacks expertise to reach a beneficial decision on the matter; or the matter is too trivial.
-@subsection RFC call
-
-In the RFC mode, one person from the TC posts on the mailing list the technical question and will request input from the community.
-
-The mail will have the following specification:
-
-    a precise title
-    a specific tag [TC RFC]
-    a top-level email
-    contain a precise question that does not exceed 100 words and that is answerable by developers
-    may have an extra description, or a link to a previous discussion, if deemed necessary,
-    contain a precise end date for the answers.
-
-The answers from the community must be on the main mailing list and must have the following specification:
-
-    keep the tag and the title unchanged
-    limited to 400 words
-    a first-level, answering directly to the main email
-    answering to the question.
-
-Further replies to answers are permitted, as long as they conform to the community standards of politeness, they are limited to 100 words, and are not nested more than once. (max-depth=2)
-
-After the end-date, mails on the thread will be ignored.
-
-Violations of those rules will be escalated through the Community Committee.
-
-After all the emails are in, the TC has 96 hours to give its final decision. Exceptionally, the TC can request an extra delay, that will be notified on the mailing list.
-@subsection Within TC
-
-In the internal case, the TC has 96 hours to give its final decision. Exceptionally, the TC can request an extra delay.
-@subsection Decisions
-
-The decisions from the TC will be sent on the mailing list, with the [TC] tag.
-
-Internally, the TC should take decisions with a majority, or using ranked-choice voting.
-
-The decision from the TC should be published with a summary of the reasons that lead to this decision.
-
-The decisions from the TC are final, until the matters are reopened after no less than one year.
-
-@anchor{Community Committee}
-@chapter Community Committee
-
-The Community Committee (CC) is here to arbitrage and make decisions when inter-personal conflicts occur in the project. It will decide quickly and take actions, for the sake of the project.
-
-The CC can remove privileges of offending members, including removal of commit access and temporary ban from the community.
-
-Decisions made by the CC can be re-opened after 1 year or by a majority vote of the General Assembly. Indefinite bans from the community must be confirmed by the General Assembly, in a majority vote.
-
-The CC is elected by the General Assembly for a duration of 1 year, and is composed of 5 members. Members can be re-elected if they wish. A majority vote in the General Assembly can trigger a new election of the CC.
-
-The members of the CC can be elected from outside of the GA. Candidates for election can either be suggested or self-nominated.
-
-The CC is governed by and responsible for enforcing the Code of Conduct.
-
-The CC can be contacted at <cc@@ffmpeg>.
-
-@anchor{Code of Conduct}
-@chapter Code of Conduct
-
-Be friendly and respectful towards others and third parties.
-Treat others the way you yourself want to be treated.
-
-Be considerate. Not everyone shares the same viewpoint and priorities as you do.
-Different opinions and interpretations help the project.
-Looking at issues from a different perspective assists development.
-
-Do not assume malice for things that can be attributed to incompetence. Even if
-it is malice, it's rarely good to start with that as initial assumption.
-
-Stay friendly even if someone acts contrarily. Everyone has a bad day
-once in a while.
-If you yourself have a bad day or are angry then try to take a break and reply
-once you are calm and without anger if you have to.
-
-Try to help other team members and cooperate if you can.
-
-The goal of software development is to create technical excellence, not for any
-individual to be better and "win" against the others. Large software projects
-are only possible and successful through teamwork.
-
-If someone struggles do not put them down. Give them a helping hand
-instead and point them in the right direction.
-
-Finally, keep in mind the immortal words of Bill and Ted,
-"Be excellent to each other."
-
-@bye

doc/decoders.texi

@@ -25,18 +25,12 @@ enabled decoders.
 A description of some of the currently available video decoders
 follows.
 
-@section av1
+@section hevc
 
-AOMedia Video 1 (AV1) decoder.
+HEVC / H.265 decoder.
 
-@subsection Options
-
-@table @option
-
-@item operating_point
-Select an operating point of a scalable AV1 bitstream (0 - 31). Default is 0.
-
-@end table
+Note: the @option{skip_loop_filter} option has effect only at level
+@code{all}.
 
 @section rawvideo
 
@@ -60,133 +54,6 @@ top-field-first is assumed
 
 @end table
 
-@section libdav1d
-
-dav1d AV1 decoder.
-
-libdav1d allows libavcodec to decode the AOMedia Video 1 (AV1) codec.
-Requires the presence of the libdav1d headers and library during configuration.
-You need to explicitly configure the build with @code{--enable-libdav1d}.
-
-@subsection Options
-
-The following options are supported by the libdav1d wrapper.
-
-@table @option
-
-@item framethreads
-Set amount of frame threads to use during decoding. The default value is 0 (autodetect).
-This option is deprecated for libdav1d >= 1.0 and will be removed in the future. Use the
-option @code{max_frame_delay} and the global option @code{threads} instead.
-
-@item tilethreads
-Set amount of tile threads to use during decoding. The default value is 0 (autodetect).
-This option is deprecated for libdav1d >= 1.0 and will be removed in the future. Use the
-global option @code{threads} instead.
-
-@item max_frame_delay
-Set max amount of frames the decoder may buffer internally. The default value is 0
-(autodetect).
-
-@item filmgrain
-Apply film grain to the decoded video if present in the bitstream. Defaults to the
-internal default of the library.
-This option is deprecated and will be removed in the future. See the global option
-@code{export_side_data} to export Film Grain parameters instead of applying it.
-
-@item oppoint
-Select an operating point of a scalable AV1 bitstream (0 - 31). Defaults to the
-internal default of the library.
-
-@item alllayers
-Output all spatial layers of a scalable AV1 bitstream. The default value is false.
-
-@end table
-
-@section libdavs2
-
-AVS2-P2/IEEE1857.4 video decoder wrapper.
-
-This decoder allows libavcodec to decode AVS2 streams with davs2 library.
-
-@c man end VIDEO DECODERS
-
-@section libuavs3d
-
-AVS3-P2/IEEE1857.10 video decoder.
-
-libuavs3d allows libavcodec to decode AVS3 streams.
-Requires the presence of the libuavs3d headers and library during configuration.
-You need to explicitly configure the build with @code{--enable-libuavs3d}.
-
-@subsection Options
-
-The following option is supported by the libuavs3d wrapper.
-
-@table @option
-
-@item frame_threads
-Set amount of frame threads to use during decoding. The default value is 0 (autodetect).
-
-@end table
-
-@section QSV Decoders
-
-The family of Intel QuickSync Video decoders (VC1, MPEG-2, H.264, HEVC,
-JPEG/MJPEG, VP8, VP9, AV1).
-
-@subsection Common Options
-
-The following options are supported by all qsv decoders.
-
-@table @option
-
-@item @var{async_depth}
-Internal parallelization depth, the higher the value the higher the latency.
-
-@item @var{gpu_copy}
-A GPU-accelerated copy between video and system memory
-@table @samp
-@item default
-@item on
-@item off
-@end table
-
-@end table
-
-@subsection HEVC Options
-Extra options for hevc_qsv.
-
-@table @option
-
-@item @var{load_plugin}
-A user plugin to load in an internal session
-@table @samp
-@item none
-@item hevc_sw
-@item hevc_hw
-@end table
-
-@item @var{load_plugins}
-A :-separate list of hexadecimal plugin UIDs to load in an internal session
-
-@end table
-
-@section v210
-
-Uncompressed 4:2:2 10-bit decoder.
-
-@subsection Options
-
-@table @option
-
-@item custom_stride
-Set the line size of the v210 data in bytes. The default value is 0
-(autodetect). You can use the special -1 value for a strideless v210 as seen in
-BOXX files.
-
-@end table
-
 @c man end VIDEO DECODERS
 
 @chapter Audio Decoders
@@ -208,7 +75,7 @@ the undocumented RealAudio 3 (a.k.a. dnet).
 
 @item -drc_scale @var{value}
 Dynamic Range Scale Factor. The factor to apply to dynamic range values
-from the AC-3 stream. This factor is applied exponentially. The default value is 1.
+from the AC-3 stream. This factor is applied exponentially.
 There are 3 notable scale factor ranges:
 @table @option
 @item drc_scale == 0
@@ -242,7 +109,7 @@ correctly by using lavc's old buggy lpc logic for decoding.
 
 @section ffwavesynth
 
-Internal wave synthesizer.
+Internal wave synthetizer.
 
 This decoder generates wave patterns according to predefined sequences. Its
 use is purely internal and the format of the data it accepts is not publicly
@@ -328,194 +195,6 @@ without this library.
 @chapter Subtitles Decoders
 @c man begin SUBTILES DECODERS
 
-@section libaribb24
-
-ARIB STD-B24 caption decoder.
-
-Implements profiles A and C of the ARIB STD-B24 standard.
-
-@subsection libaribb24 Decoder Options
-
-@table @option
-
-@item -aribb24-base-path @var{path}
-Sets the base path for the libaribb24 library. This is utilized for reading of
-configuration files (for custom unicode conversions), and for dumping of
-non-text symbols as images under that location.
-
-Unset by default.
-
-@item -aribb24-skip-ruby-text @var{boolean}
-Tells the decoder wrapper to skip text blocks that contain half-height ruby
-text.
-
-Enabled by default.
-
-@end table
-
-@section libaribcaption
-
-Yet another ARIB STD-B24 caption decoder using external @dfn{libaribcaption}
-library.
-
-Implements profiles A and C of the Japanse ARIB STD-B24 standard,
-Brazilian ABNT NBR 15606-1, and Philippines version of ISDB-T.
-
-Requires the presence of the libaribcaption headers and library
-(@url{https://github.com/xqq/libaribcaption}) during configuration.
-You need to explicitly configure the build with @code{--enable-libaribcaption}.
-If both @dfn{libaribb24} and @dfn{libaribcaption} are enabled, @dfn{libaribcaption}
-decoder precedes.
-
-@subsection libaribcaption Decoder Options
-
-@table @option
-
-@item -sub_type @var{subtitle_type}
-Specifies the format of the decoded subtitles.
-
-@table @samp
-@item bitmap
-Graphical image.
-@item ass
-ASS formatted text.
-@item text
-Simple text based output without formatting.
-@end table
-
-The default is @dfn{ass} as same as @dfn{libaribb24} decoder.
-Some present players (e.g., @dfn{mpv}) expect ASS format for ARIB caption.
-
-@item -caption_encoding @var{encoding_scheme}
-Specifies the encoding scheme of input subtitle text.
-
-@table @samp
-@item auto
-Automatically detect text encoding (default).
-@item jis
-8bit-char JIS encoding defined in ARIB STD B24.
-This encoding used in Japan for ISDB captions.
-@item utf8
-UTF-8 encoding defined in ARIB STD B24.
-This encoding is used in Philippines for ISDB-T captions.
-@item latin
-Latin character encoding defined in ABNT NBR 15606-1.
-This encoding is used in South America for SBTVD / ISDB-Tb captions.
-@end table
-
-@item -font @var{font_name[,font_name2,...]}
-Specify comma-separated list of font family names to be used for @dfn{bitmap}
-or @dfn{ass} type subtitle rendering.
-Only first font name is used for @dfn{ass} type subtitle.
-
-If not specified, use internaly defined default font family.
-
-@item -ass_single_rect @var{boolean}
-ARIB STD-B24 specifies that some captions may be displayed at different
-positions at a time (multi-rectangle subtitle).
-Since some players (e.g., old @dfn{mpv}) can't handle multiple ASS rectangles
-in a single AVSubtitle, or multiple ASS rectangles of indeterminate duration
-with the same start timestamp, this option can change the behavior so that
-all the texts are displayed in a single ASS rectangle.
-
-The default is @var{false}.
-
-If your player cannot handle AVSubtitles with multiple ASS rectangles properly,
-set this option to @var{true} or define @env{ASS_SINGLE_RECT=1} to change
-default behavior at compilation.
-
-@item -force_outline_text @var{boolean}
-Specify whether always render outline text for all characters regardless of
-the indication by charactor style.
-
-The default is @var{false}.
-
-@item -outline_width @var{number} (0.0 - 3.0)
-Specify width for outline text, in dots (relative).
-
-The default is @var{1.5}.
-
-@item -ignore_background @var{boolean}
-Specify whether to ignore background color rendering.
-
-The default is @var{false}.
-
-@item -ignore_ruby @var{boolean}
-Specify whether to ignore rendering for ruby-like (furigana) characters.
-
-The default is @var{false}.
-
-@item -replace_drcs @var{boolean}
-Specify whether to render replaced DRCS characters as Unicode characters.
-
-The default is @var{true}.
-
-@item -replace_msz_ascii @var{boolean}
-Specify whether to replace MSZ (Middle Size; half width) fullwidth
-alphanumerics with halfwidth alphanumerics.
-
-The default is @var{true}.
-
-@item -replace_msz_japanese @var{boolean}
-Specify whether to replace some MSZ (Middle Size; half width) fullwidth
-japanese special characters with halfwidth ones.
-
-The default is @var{true}.
-
-@item -replace_msz_glyph @var{boolean}
-Specify whether to replace MSZ (Middle Size; half width) characters
-with halfwidth glyphs if the fonts supports it.
-This option works under FreeType or DirectWrite renderer
-with Adobe-Japan1 compliant fonts.
-e.g., IBM Plex Sans JP, Morisawa BIZ UDGothic, Morisawa BIZ UDMincho,
-Yu Gothic, Yu Mincho, and Meiryo.
-
-The default is @var{true}.
-
-@item -canvas_size @var{image_size}
-Specify the resolution of the canvas to render subtitles to; usually, this
-should be frame size of input video.
-This only applies when @code{-subtitle_type} is set to @var{bitmap}.
-
-The libaribcaption decoder assumes input frame size for bitmap rendering as below:
-@enumerate
-@item
-PROFILE_A : 1440 x 1080 with SAR (PAR) 4:3
-@item
-PROFILE_C : 320 x 180 with SAR (PAR) 1:1
-@end enumerate
-
-If actual frame size of input video does not match above assumption,
-the rendered captions may be distorted.
-To make the captions undistorted, add @code{-canvas_size} option to specify
-actual input video size.
-
-Note that the @code{-canvas_size} option is not required for video with
-different size but same aspect ratio.
-In such cases, the caption will be stretched or shrunk to actual video size
-if @code{-canvas_size} option is not specified.
-If @code{-canvas_size} option is specified with different size,
-the caption will be stretched or shrunk as specified size with calculated SAR.
-
-@end table
-
-@subsection libaribcaption decoder usage examples
-
-Display MPEG-TS file with ARIB subtitle by @code{ffplay} tool:
-@example
-ffplay -sub_type bitmap MPEG.TS
-@end example
-
-Display MPEG-TS file with input frame size 1920x1080 by @code{ffplay} tool:
-@example
-ffplay -sub_type bitmap -canvas_size 1920x1080 MPEG.TS
-@end example
-
-Embed ARIB subtitle in transcoded video:
-@example
-ffmpeg -sub_type bitmap -i src.m2t -filter_complex "[0:v][0:s]overlay" -vcodec h264 dest.mp4
-@end example
-
 @section dvbsub
 
 @subsection Options
@@ -523,8 +202,6 @@ ffmpeg -sub_type bitmap -i src.m2t -filter_complex "[0:v][0:s]overlay" -vcodec h
 @table @option
 @item compute_clut
 @table @option
-@item -2
-Compute clut once if no matching CLUT is in the stream.
 @item -1
 Compute clut if no matching CLUT is in the stream.
 @item 0
@@ -553,7 +230,7 @@ palette is stored in the IFO file, and therefore not available when reading
 from dumped VOB files.
 
 The format for this option is a string containing 16 24-bits hexadecimal
-numbers (without 0x prefix) separated by commas, for example @code{0d00ee,
+numbers (without 0x prefix) separated by comas, for example @code{0d00ee,
 ee450d, 101010, eaeaea, 0ce60b, ec14ed, ebff0b, 0d617a, 7b7b7b, d1d1d1,
 7b2a0e, 0d950c, 0f007b, cf0dec, cfa80c, 7c127b}.
 
@@ -578,30 +255,18 @@ configuration. You need to explicitly configure the build with
 
 @table @option
 @item txt_page
-List of teletext page numbers to decode. Pages that do not match the specified
-list are dropped. You may use the special @code{*} string to match all pages,
-or @code{subtitle} to match all subtitle pages.
+List of teletext page numbers to decode. You may use the special * string to
+match all pages. Pages that do not match the specified list are dropped.
 Default value is *.
-@item txt_default_region
-Set default character set used for decoding, a value between 0 and 87 (see
-ETS 300 706, Section 15, Table 32). Default value is -1, which does not
-override the libzvbi default. This option is needed for some legacy level 1.0
-transmissions which cannot signal the proper charset.
 @item txt_chop_top
 Discards the top teletext line. Default value is 1.
 @item txt_format
-Specifies the format of the decoded subtitles.
-@table @option
-@item bitmap
-The default format, you should use this for teletext pages, because certain
-graphics and colors cannot be expressed in simple text or even ASS.
-@item text
-Simple text based output without formatting.
-@item ass
-Formatted ASS output, subtitle pages and teletext pages are returned in
-different styles, subtitle pages are stripped down to text, but an effort is
-made to keep the text alignment and the formatting.
-@end table
+Specifies the format of the decoded subtitles. The teletext decoder is capable
+of decoding the teletext pages to bitmaps or to simple text, you should use
+"bitmap" for teletext pages, because certain graphics and colors cannot be
+expressed in simple text. You might use "text" for teletext based subtitles if
+your application can handle simple text based subtitles. Default value is
+bitmap.
 @item txt_left
 X offset of generated bitmaps, default is 0.
 @item txt_top
@@ -610,12 +275,11 @@ Y offset of generated bitmaps, default is 0.
 Chops leading and trailing spaces and removes empty lines from the generated
 text. This option is useful for teletext based subtitles where empty spaces may
 be present at the start or at the end of the lines or empty lines may be
-present between the subtitle lines because of double-sized teletext characters.
+present between the subtitle lines because of double-sized teletext charactes.
 Default value is 1.
 @item txt_duration
 Sets the display duration of the decoded teletext pages or subtitles in
-milliseconds. Default value is -1 which means infinity or until the next
-subtitle event comes.
+milliseconds. Default value is 30000 which is 30 seconds.
 @item txt_transparent
 Force transparent background of the generated teletext bitmaps. Default value
 is 0 which means an opaque background.

doc/demuxers.texi

@@ -25,12 +25,16 @@ Audible Format 2, 3, and 4 demuxer.
 
 This demuxer is used to demux Audible Format 2, 3, and 4 (.aa) files.
 
-@section aac
+@section applehttp
 
-Raw Audio Data Transport Stream AAC demuxer.
+Apple HTTP Live Streaming demuxer.
 
-This demuxer is used to demux an ADTS input containing a single AAC stream
-alongwith any ID3v1/2 or APE tags in it.
+This demuxer presents all AVStreams from all variant streams.
+The id field is set to the bitrate variant index number. By setting
+the discard flags on AVStreams (by pressing 'a' or 'v' in ffplay),
+the caller can decide which variant streams to actually receive.
+The total bitrate of the variant that the stream belongs to is
+available in a metadata key named "variant_bitrate".
 
 @section apng
 
@@ -44,15 +48,12 @@ between the last fcTL and IEND chunks.
 
 @table @option
 @item -ignore_loop @var{bool}
-Ignore the loop variable in the file if set. Default is enabled.
-
+Ignore the loop variable in the file if set.
 @item -max_fps @var{int}
-Maximum framerate in frames per second. Default of 0 imposes no limit.
-
+Maximum framerate in frames per second (0 for no limit).
 @item -default_fps @var{int}
 Default framerate in frames per second when none is specified in the file
-(0 meaning as fast as possible). Default is 15.
-
+(0 meaning as fast as possible).
 @end table
 
 @section asf
@@ -103,7 +104,8 @@ backslash or single quotes.
 All subsequent file-related directives apply to that file.
 
 @item @code{ffconcat version 1.0}
-Identify the script type and version.
+Identify the script type and version. It also sets the @option{safe} option
+to 1 if it was -1.
 
 To make FFmpeg recognize the format automatically, this directive must
 appear exactly as is (no extra space or byte-order-mark) on the very first
@@ -157,16 +159,6 @@ directive) will be reduced based on their specified Out point.
 Metadata of the packets of the file. The specified metadata will be set for
 each file packet. You can specify this directive multiple times to add multiple
 metadata entries.
-This directive is deprecated, use @code{file_packet_meta} instead.
-
-@item @code{file_packet_meta @var{key} @var{value}}
-Metadata of the packets of the file. The specified metadata will be set for
-each file packet. You can specify this directive multiple times to add multiple
-metadata entries.
-
-@item @code{option @var{key} @var{value}}
-Option to access, open and probe the file.
-Can be present multiple times.
 
 @item @code{stream}
 Introduce a stream in the virtual file.
@@ -184,20 +176,6 @@ subfiles will be used.
 This is especially useful for MPEG-PS (VOB) files, where the order of the
 streams is not reliable.
 
-@item @code{stream_meta @var{key} @var{value}}
-Metadata for the stream.
-Can be present multiple times.
-
-@item @code{stream_codec @var{value}}
-Codec for the stream.
-
-@item @code{stream_extradata @var{hex_string}}
-Extradata for the string, encoded in hexadecimal.
-
-@item @code{chapter @var{id} @var{start} @var{end}}
-Add a chapter. @var{id} is an unique identifier, possibly small and
-consecutive.
-
 @end table
 
 @subsection Options
@@ -207,8 +185,7 @@ This demuxer accepts the following option:
 @table @option
 
 @item safe
-If set to 1, reject unsafe file paths and directives.
-A file path is considered safe if it
+If set to 1, reject unsafe file paths. A file path is considered safe if it
 does not contain a protocol specification and is relative and all components
 only contain characters from the portable character set (letters, digits,
 period, underscore and hyphen) and have no period at the beginning of a
@@ -218,6 +195,9 @@ If set to 0, any file name is accepted.
 
 The default is 1.
 
+-1 is equivalent to 1 if the format was automatically
+probed and 0 otherwise.
+
 @item auto_convert
 If set to 1, try to perform automatic conversions on packet data to make the
 streams concatenable.
@@ -264,65 +244,11 @@ file subdir/file-2.wav
 @end example
 @end itemize
 
-@section dash
-
-Dynamic Adaptive Streaming over HTTP demuxer.
-
-This demuxer presents all AVStreams found in the manifest.
-By setting the discard flags on AVStreams the caller can decide
-which streams to actually receive.
-Each stream mirrors the @code{id} and @code{bandwidth} properties from the
-@code{<Representation>} as metadata keys named "id" and "variant_bitrate" respectively.
-
-@subsection Options
-
-This demuxer accepts the following option:
-
-@table @option
-
-@item cenc_decryption_key
-16-byte key, in hex, to decrypt files encrypted using ISO Common Encryption (CENC/AES-128 CTR; ISO/IEC 23001-7).
-
-@end table
-
-@section ea
-
-Electronic Arts Multimedia format demuxer.
-
-This format is used by various Electronic Arts games.
-
-@subsection Options
-
-@table @option
-
-@item merge_alpha @var{bool}
-
-Normally the VP6 alpha channel (if exists) is returned as a secondary video
-stream, by setting this option you can make the demuxer return a single video
-stream which contains the alpha channel in addition to the ordinary video.
-
-@end table
-
-@section imf
-
-Interoperable Master Format demuxer.
-
-This demuxer presents audio and video streams found in an IMF Composition, as
-specified in @url{https://doi.org/10.5594/SMPTE.ST2067-2.2020, SMPTE ST 2067-2}.
-
-@example
-ffmpeg [-assetmaps <path of ASSETMAP1>,<path of ASSETMAP2>,...] -i <path of CPL> ...
-@end example
-
-If @code{-assetmaps} is not specified, the demuxer looks for a file called
-@file{ASSETMAP.xml} in the same directory as the CPL.
-
-@section flv, live_flv, kux
+@section flv, live_flv
 
 Adobe Flash Video Format demuxer.
 
 This demuxer is used to demux FLV files and RTMP network streams. In case of live network streams, if you force format, you may use live_flv option instead of flv to survive timestamp discontinuities.
-KUX is a flv variant used on the Youku platform.
 
 @example
 ffmpeg -f flv -i myfile.flv ...
@@ -333,12 +259,6 @@ ffmpeg -f live_flv -i rtmp://<any.server>/anything/key ....
 @table @option
 @item -flv_metadata @var{bool}
 Allocate the streams according to the onMetaData array content.
-
-@item -flv_ignore_prevtag @var{bool}
-Ignore the size of previous tag value.
-
-@item -flv_full_metadata @var{bool}
-Output all context of the onMetadata.
 @end table
 
 @section gif
@@ -384,53 +304,18 @@ infinitely.
 
 HLS demuxer
 
-Apple HTTP Live Streaming demuxer.
-
-This demuxer presents all AVStreams from all variant streams.
-The id field is set to the bitrate variant index number. By setting
-the discard flags on AVStreams (by pressing 'a' or 'v' in ffplay),
-the caller can decide which variant streams to actually receive.
-The total bitrate of the variant that the stream belongs to is
-available in a metadata key named "variant_bitrate".
-
 It accepts the following options:
 
 @table @option
 @item live_start_index
 segment index to start live streams at (negative values are from the end).
 
-@item prefer_x_start
-prefer to use #EXT-X-START if it's in playlist instead of live_start_index.
-
 @item allowed_extensions
 ',' separated list of file extensions that hls is allowed to access.
 
 @item max_reload
 Maximum number of times a insufficient list is attempted to be reloaded.
 Default value is 1000.
-
-@item m3u8_hold_counters
-The maximum number of times to load m3u8 when it refreshes without new segments.
-Default value is 1000.
-
-@item http_persistent
-Use persistent HTTP connections. Applicable only for HTTP streams.
-Enabled by default.
-
-@item http_multiple
-Use multiple HTTP connections for downloading HTTP segments.
-Enabled by default for HTTP/1.1 servers.
-
-@item http_seekable
-Use HTTP partial requests for downloading HTTP segments.
-0 = disable, 1 = enable, -1 = auto, Default is auto.
-
-@item seg_format_options
-Set options for the demuxer of media segments using a list of key=value pairs separated by @code{:}.
-
-@item seg_max_retry
-Maximum number of times to reload a segment on error, useful when segment skip on network error is not desired.
-Default value is 0.
 @end table
 
 @section image2
@@ -541,17 +426,6 @@ nanosecond precision.
 @item video_size
 Set the video size of the images to read. If not specified the video
 size is guessed from the first image file in the sequence.
-@item export_path_metadata
-If set to 1, will add two extra fields to the metadata found in input, making them
-also available for other filters (see @var{drawtext} filter for examples). Default
-value is 0. The extra fields are described below:
-@table @option
-@item lavf.image2dec.source_path
-Corresponds to the full path to the input file being read.
-@item lavf.image2dec.source_basename
-Corresponds to the name of the file being read.
-@end table
-
 @end table
 
 @subsection Examples
@@ -583,84 +457,14 @@ ffmpeg -framerate 10 -pattern_type glob -i "*.png" out.mkv
 
 The Game Music Emu library is a collection of video game music file emulators.
 
-See @url{https://bitbucket.org/mpyne/game-music-emu/overview} for more information.
+See @url{http://code.google.com/p/game-music-emu/} for more information.
 
-It accepts the following options:
+Some files have multiple tracks. The demuxer will pick the first track by
+default. The @option{track_index} option can be used to select a different
+track. Track indexes start at 0. The demuxer exports the number of tracks as
+@var{tracks} meta data entry.
 
-@table @option
-
-@item track_index
-Set the index of which track to demux. The demuxer can only export one track.
-Track indexes start at 0. Default is to pick the first track. Number of tracks
-is exported as @var{tracks} metadata entry.
-
-@item sample_rate
-Set the sampling rate of the exported track. Range is 1000 to 999999. Default is 44100.
-
-@item max_size @emph{(bytes)}
-The demuxer buffers the entire file into memory. Adjust this value to set the maximum buffer size,
-which in turn, acts as a ceiling for the size of files that can be read.
-Default is 50 MiB.
-
-@end table
-
-@section libmodplug
-
-ModPlug based module demuxer
-
-See @url{https://github.com/Konstanty/libmodplug}
-
-It will export one 2-channel 16-bit 44.1 kHz audio stream.
-Optionally, a @code{pal8} 16-color video stream can be exported with or without printed metadata.
-
-It accepts the following options:
-
-@table @option
-@item noise_reduction
-Apply a simple low-pass filter. Can be 1 (on) or 0 (off). Default is 0.
-
-@item reverb_depth
-Set amount of reverb. Range 0-100. Default is 0.
-
-@item reverb_delay
-Set delay in ms, clamped to 40-250 ms. Default is 0.
-
-@item bass_amount
-Apply bass expansion a.k.a. XBass or megabass. Range is 0 (quiet) to 100 (loud). Default is 0.
-
-@item bass_range
-Set cutoff i.e. upper-bound for bass frequencies. Range is 10-100 Hz. Default is 0.
-
-@item surround_depth
-Apply a Dolby Pro-Logic surround effect. Range is 0 (quiet) to 100 (heavy). Default is 0.
-
-@item surround_delay
-Set surround delay in ms, clamped to 5-40 ms. Default is 0.
-
-@item max_size
-The demuxer buffers the entire file into memory. Adjust this value to set the maximum buffer size,
-which in turn, acts as a ceiling for the size of files that can be read. Range is 0 to 100 MiB.
-0 removes buffer size limit (not recommended). Default is 5 MiB.
-
-@item video_stream_expr
-String which is evaluated using the eval API to assign colors to the generated video stream.
-Variables which can be used are @code{x}, @code{y}, @code{w}, @code{h}, @code{t}, @code{speed},
-@code{tempo}, @code{order}, @code{pattern} and @code{row}.
-
-@item video_stream
-Generate video stream. Can be 1 (on) or 0 (off). Default is 0.
-
-@item video_stream_w
-Set video frame width in 'chars' where one char indicates 8 pixels. Range is 20-512. Default is 30.
-
-@item video_stream_h
-Set video frame height in 'chars' where one char indicates 8 pixels. Range is 20-512. Default is 30.
-
-@item video_stream_ptxt
-Print metadata on video stream. Includes @code{speed}, @code{tempo}, @code{order}, @code{pattern},
-@code{row} and @code{ts} (time in ms). Can be 1 (on) or 0 (off). Default is 1.
-
-@end table
+For very large files, the @option{max_size} option may have to be adjusted.
 
 @section libopenmpt
 
@@ -689,13 +493,9 @@ Set the sample rate for libopenmpt to output.
 Range is from 1000 to INT_MAX. The value default is 48000.
 @end table
 
-@section mov/mp4/3gp
+@section mov/mp4/3gp/QuickTime
 
-Demuxer for Quicktime File Format & ISO/IEC Base Media File Format (ISO/IEC 14496-12 or MPEG-4 Part 12, ISO/IEC 15444-12 or JPEG 2000 Part 12).
-
-Registered extensions: mov, mp4, m4a, 3gp, 3g2, mj2, psp, m4b, ism, ismv, isma, f4v
-
-@subsection Options
+QuickTime / MP4 demuxer.
 
 This demuxer accepts the following options:
 @table @option
@@ -706,95 +506,10 @@ Enabling this can theoretically leak information in some use cases.
 @item use_absolute_path
 Allows loading of external tracks via absolute paths, disabled by default.
 Enabling this poses a security risk. It should only be enabled if the source
-is known to be non-malicious.
-
-@item seek_streams_individually
-When seeking, identify the closest point in each stream individually and demux packets in
-that stream from identified point. This can lead to a different sequence of packets compared
-to demuxing linearly from the beginning. Default is true.
-
-@item ignore_editlist
-Ignore any edit list atoms. The demuxer, by default, modifies the stream index to reflect the
-timeline described by the edit list. Default is false.
-
-@item advanced_editlist
-Modify the stream index to reflect the timeline described by the edit list. @code{ignore_editlist}
-must be set to false for this option to be effective.
-If both @code{ignore_editlist} and this option are set to false, then only the
-start of the stream index is modified to reflect initial dwell time or starting timestamp
-described by the edit list. Default is true.
-
-@item ignore_chapters
-Don't parse chapters. This includes GoPro 'HiLight' tags/moments. Note that chapters are
-only parsed when input is seekable. Default is false.
-
-@item use_mfra_for
-For seekable fragmented input, set fragment's starting timestamp from media fragment random access box, if present.
-
-Following options are available:
-@table @samp
-@item auto
-Auto-detect whether to set mfra timestamps as PTS or DTS @emph{(default)}
-
-@item dts
-Set mfra timestamps as DTS
-
-@item pts
-Set mfra timestamps as PTS
-
-@item 0
-Don't use mfra box to set timestamps
-@end table
-
-@item use_tfdt
-For fragmented input, set fragment's starting timestamp to @code{baseMediaDecodeTime} from the @code{tfdt} box.
-Default is enabled, which will prefer to use the @code{tfdt} box to set DTS. Disable to use the @code{earliest_presentation_time} from the @code{sidx} box.
-In either case, the timestamp from the @code{mfra} box will be used if it's available and @code{use_mfra_for} is
-set to pts or dts.
-
-@item export_all
-Export unrecognized boxes within the @var{udta} box as metadata entries. The first four
-characters of the box type are set as the key. Default is false.
-
-@item export_xmp
-Export entire contents of @var{XMP_} box and @var{uuid} box as a string with key @code{xmp}. Note that
-if @code{export_all} is set and this option isn't, the contents of @var{XMP_} box are still exported
-but with key @code{XMP_}. Default is false.
-
-@item activation_bytes
-4-byte key required to decrypt Audible AAX and AAX+ files. See Audible AAX subsection below.
-
-@item audible_fixed_key
-Fixed key used for handling Audible AAX/AAX+ files. It has been pre-set so should not be necessary to
-specify.
-
-@item decryption_key
-16-byte key, in hex, to decrypt files encrypted using ISO Common Encryption (CENC/AES-128 CTR; ISO/IEC 23001-7).
-
-@item max_stts_delta
-Very high sample deltas written in a trak's stts box may occasionally be intended but usually they are written in
-error or used to store a negative value for dts correction when treated as signed 32-bit integers. This option lets
-the user set an upper limit, beyond which the delta is clamped to 1. Values greater than the limit if negative when
-cast to int32 are used to adjust onward dts.
-
-Unit is the track time scale. Range is 0 to UINT_MAX. Default is @code{UINT_MAX - 48000*10} which allows upto
-a 10 second dts correction for 48 kHz audio streams while accommodating 99.9% of @code{uint32} range.
-
-@item interleaved_read
-Interleave packets from multiple tracks at demuxer level. For badly interleaved files, this prevents playback issues
-caused by large gaps between packets in different tracks, as MOV/MP4 do not have packet placement requirements.
-However, this can cause excessive seeking on very badly interleaved files, due to seeking between tracks, so disabling
-it may prevent I/O issues, at the expense of playback.
+is known to be non malicious.
 
 @end table
 
-@subsection Audible AAX
-
-Audible AAX files are encrypted M4B files, and they can be decrypted by specifying a 4 byte activation secret.
-@example
-ffmpeg -activation_bytes 1CEB00DA -i test.aax -vn -c:a copy output.mp4
-@end example
-
 @section mpegts
 
 MPEG-2 transport stream demuxer.
@@ -805,9 +520,6 @@ This demuxer accepts the following options:
 Set size limit for looking up a new synchronization. Default value is
 65536.
 
-@item skip_unknown_pmt
-Skip PMTs for programs not defined in the PAT. Default value is 0.
-
 @item fix_teletext_pts
 Override teletext packet PTS and DTS values with the timestamps calculated
 from the PCR of the first program which the teletext stream is part of and is
@@ -822,14 +534,6 @@ Show the detected raw packet size, cannot be set by the user.
 Scan and combine all PMTs. The value is an integer with value from -1
 to 1 (-1 means automatic setting, 1 means enabled, 0 means
 disabled). Default value is -1.
-
-@item merge_pmt_versions
-Re-use existing streams when a PMT's version is updated and elementary
-streams move to different PIDs. Default value is 0.
-
-@item max_packet_size
-Set maximum size, in bytes, of packet emitted by the demuxer. Payloads above this size
-are split across multiple packets. Range is 1 to INT_MAX/2. Default is 204800 bytes.
 @end table
 
 @section mpjpeg
@@ -927,20 +631,4 @@ Example: convert the captions to a format most players understand:
 ffmpeg -i http://www.ted.com/talks/subtitles/id/1/lang/en talk1-en.srt
 @end example
 
-@section vapoursynth
-
-Vapoursynth wrapper.
-
-Due to security concerns, Vapoursynth scripts will not
-be autodetected so the input format has to be forced. For ff* CLI tools,
-add @code{-f vapoursynth} before the input @code{-i yourscript.vpy}.
-
-This demuxer accepts the following option:
-@table @option
-@item max_script_size
-The demuxer buffers the entire script into memory. Adjust this value to set the maximum buffer size,
-which in turn, acts as a ceiling for the size of scripts that can be read.
-Default is 1 MiB.
-@end table
-
 @c man end DEMUXERS

doc/developer.texi

@@ -10,116 +10,46 @@
 
 @contents
 
-@chapter Introduction
+@chapter Developers Guide
 
-This text is concerned with the development @emph{of} FFmpeg itself. Information
-on using the FFmpeg libraries in other programs can be found elsewhere, e.g. in:
-@itemize @bullet
-@item
-the installed header files
-@item
-@url{http://ffmpeg.org/doxygen/trunk/index.html, the Doxygen documentation}
-generated from the headers
-@item
-the examples under @file{doc/examples}
-@end itemize
+@section Notes for external developers
+
+This document is mostly useful for internal FFmpeg developers.
+External developers who need to use the API in their application should
+refer to the API doxygen documentation in the public headers, and
+check the examples in @file{doc/examples} and in the source code to
+see how the public API is employed.
+
+You can use the FFmpeg libraries in your commercial program, but you
+are encouraged to @emph{publish any patch you make}. In this case the
+best way to proceed is to send your patches to the ffmpeg-devel
+mailing list following the guidelines illustrated in the remainder of
+this document.
 
 For more detailed legal information about the use of FFmpeg in
 external programs read the @file{LICENSE} file in the source tree and
 consult @url{https://ffmpeg.org/legal.html}.
 
-If you modify FFmpeg code for your own use case, you are highly encouraged to
-@emph{submit your changes back to us}, using this document as a guide. There are
-both pragmatic and ideological reasons to do so:
+@section Contributing
+
+There are 3 ways by which code gets into FFmpeg.
 @itemize @bullet
-@item
-Maintaining external changes to keep up with upstream development is
-time-consuming and error-prone. With your code in the main tree, it will be
-maintained by FFmpeg developers.
-@item
-FFmpeg developers include leading experts in the field who can find bugs or
-design flaws in your code.
-@item
-By supporting the project you find useful you ensure it continues to be
-maintained and developed.
+@item Submitting patches to the main developer mailing list.
+      See @ref{Submitting patches} for details.
+@item Directly committing changes to the main tree.
+@item Committing changes to a git clone, for example on github.com or
+      gitorious.org. And asking us to merge these changes.
 @end itemize
 
-All proposed code changes should be submitted for review to
-@url{mailto:ffmpeg-devel@@ffmpeg.org, the development mailing list}, as
-described in more detail in the @ref{Submitting patches} chapter. The code
-should comply with the @ref{Development Policy} and follow the @ref{Coding Rules}.
+Whichever way, changes should be reviewed by the maintainer of the code
+before they are committed. And they should follow the @ref{Coding Rules}.
 The developer making the commit and the author are responsible for their changes
 and should try to fix issues their commit causes.
 
 @anchor{Coding Rules}
-@chapter Coding Rules
+@section Coding Rules
 
-@section Language
-
-FFmpeg is mainly programmed in the ISO C99 language, extended with:
-@itemize @bullet
-@item
-Atomic operations from C11 @file{stdatomic.h}. They are emulated on
-architectures/compilers that do not support them, so all FFmpeg-internal code
-may use atomics without any extra checks. However, @file{stdatomic.h} must not
-be included in public headers, so they stay C99-compatible.
-@end itemize
-
-Compiler-specific extensions may be used with good reason, but must not be
-depended on, i.e. the code must still compile and work with compilers lacking
-the extension.
-
-The following C99 features must not be used anywhere in the codebase:
-@itemize @bullet
-@item
-variable-length arrays;
-
-@item
-complex numbers;
-
-@item
-mixed statements and declarations.
-@end itemize
-
-@subsection SIMD/DSP
-@anchor{SIMD/DSP}
-
-As modern compilers are unable to generate efficient SIMD or other
-performance-critical DSP code from plain C, handwritten assembly is used.
-Usually such code is isolated in a separate function. Then the standard approach
-is writing multiple versions of this function – a plain C one that works
-everywhere and may also be useful for debugging, and potentially multiple
-architecture-specific optimized implementations. Initialization code then
-chooses the best available version at runtime and loads it into a function
-pointer; the function in question is then always called through this pointer.
-
-The specific syntax used for writing assembly is:
-@itemize @bullet
-@item
-NASM on x86;
-
-@item
-GAS on ARM.
-@end itemize
-
-A unit testing framework for assembly called @code{checkasm} lives under
-@file{tests/checkasm}. All new assembly should come with @code{checkasm} tests;
-adding tests for existing assembly that lacks them is also strongly encouraged.
-
-@subsection Other languages
-
-Other languages than C may be used in special cases:
-@itemize @bullet
-@item
-Compiler intrinsics or inline assembly when the code in question cannot be
-written in the standard way described in the @ref{SIMD/DSP} section. This
-typically applies to code that needs to be inlined.
-
-@item
-Objective-C where required for interacting with macOS-specific interfaces.
-@end itemize
-
-@section Code formatting conventions
+@subsection Code formatting conventions
 
 There are the following guidelines regarding the indentation in files:
 
@@ -141,41 +71,10 @@ K&R coding style is used.
 @end itemize
 The presentation is one inspired by 'indent -i4 -kr -nut'.
 
-@subsection Vim configuration
-In order to configure Vim to follow FFmpeg formatting conventions, paste
-the following snippet into your @file{.vimrc}:
-@example
-" indentation rules for FFmpeg: 4 spaces, no tabs
-set expandtab
-set shiftwidth=4
-set softtabstop=4
-set cindent
-set cinoptions=(0
-" Allow tabs in Makefiles.
-autocmd FileType make,automake set noexpandtab shiftwidth=8 softtabstop=8
-" Trailing whitespace and tabs are forbidden, so highlight them.
-highlight ForbiddenWhitespace ctermbg=red guibg=red
-match ForbiddenWhitespace /\s\+$\|\t/
-" Do not highlight spaces at the end of line while typing on that line.
-autocmd InsertEnter * match ForbiddenWhitespace /\t\|\s\+\%#\@@<!$/
-@end example
+The main priority in FFmpeg is simplicity and small code size in order to
+minimize the bug count.
 
-@subsection Emacs configuration
-For Emacs, add these roughly equivalent lines to your @file{.emacs.d/init.el}:
-@lisp
-(c-add-style "ffmpeg"
-             '("k&r"
-               (c-basic-offset . 4)
-               (indent-tabs-mode . nil)
-               (show-trailing-whitespace . t)
-               (c-offsets-alist
-                (statement-cont . (c-lineup-assignments +)))
-               )
-             )
-(setq c-default-style "ffmpeg")
-@end lisp
-
-@section Comments
+@subsection Comments
 Use the JavaDoc/Doxygen  format (see examples below) so that code documentation
 can be generated automatically. All nontrivial functions should have a comment
 above them explaining what the function does, even if it is just one sentence.
@@ -215,52 +114,86 @@ int myfunc(int my_parameter)
 ...
 @end example
 
-@anchor{Naming conventions}
-@section Naming conventions
+@subsection C language features
 
-Names of functions, variables, and struct members must be lowercase, using
-underscores (_) to separate words. For example, @samp{avfilter_get_video_buffer}
-is an acceptable function name and @samp{AVFilterGetVideo} is not.
+FFmpeg is programmed in the ISO C90 language with a few additional
+features from ISO C99, namely:
 
-Struct, union, enum, and typedeffed type names must use CamelCase. All structs
-and unions should be typedeffed to the same name as the struct/union tag, e.g.
-@code{typedef struct AVFoo @{ ... @} AVFoo;}. Enums are typically not
-typedeffed.
-
-Enumeration constants and macros must be UPPERCASE, except for macros
-masquerading as functions, which should use the function naming convention.
-
-All identifiers in the libraries should be namespaced as follows:
 @itemize @bullet
 @item
-No namespacing for identifiers with file and lower scope (e.g. local variables,
-static functions), and struct and union members,
+the @samp{inline} keyword;
 
 @item
-The @code{ff_} prefix must be used for variables and functions visible outside
-of file scope, but only used internally within a single library, e.g.
-@samp{ff_w64_demuxer}. This prevents name collisions when FFmpeg is statically
-linked.
+@samp{//} comments;
+
+@item
+designated struct initializers (@samp{struct s x = @{ .i = 17 @};});
+
+@item
+compound literals (@samp{x = (struct s) @{ 17, 23 @};}).
+
+@item
+Implementation defined behavior for signed integers is assumed to match the
+expected behavior for two's complement. Non representable values in integer
+casts are binary truncated. Shift right of signed values uses sign extension.
+@end itemize
+
+These features are supported by all compilers we care about, so we will not
+accept patches to remove their use unless they absolutely do not impair
+clarity and performance.
+
+All code must compile with recent versions of GCC and a number of other
+currently supported compilers. To ensure compatibility, please do not use
+additional C99 features or GCC extensions. Especially watch out for:
+
+@itemize @bullet
+@item
+mixing statements and declarations;
+
+@item
+@samp{long long} (use @samp{int64_t} instead);
+
+@item
+@samp{__attribute__} not protected by @samp{#ifdef __GNUC__} or similar;
+
+@item
+GCC statement expressions (@samp{(x = (@{ int y = 4; y; @})}).
+@end itemize
+
+@subsection Naming conventions
+All names should be composed with underscores (_), not CamelCase. For example,
+@samp{avfilter_get_video_buffer} is an acceptable function name and
+@samp{AVFilterGetVideo} is not. The exception from this are type names, like
+for example structs and enums; they should always be in CamelCase.
+
+There are the following conventions for naming variables and functions:
+
+@itemize @bullet
+@item
+For local variables no prefix is required.
+
+@item
+For file-scope variables and functions declared as @code{static}, no prefix
+is required.
+
+@item
+For variables and functions visible outside of file scope, but only used
+internally by a library, an @code{ff_} prefix should be used,
+e.g. @samp{ff_w64_demuxer}.
 
 @item
 For variables and functions visible outside of file scope, used internally
 across multiple libraries, use @code{avpriv_} as prefix, for example,
-@samp{avpriv_report_missing_feature}.
-
-@item
-All other internal identifiers, like private type or macro names, should be
-namespaced only to avoid possible internal conflicts. E.g. @code{H264_NAL_SPS}
-vs. @code{HEVC_NAL_SPS}.
+@samp{avpriv_aac_parse_header}.
 
 @item
 Each library has its own prefix for public symbols, in addition to the
 commonly used @code{av_} (@code{avformat_} for libavformat,
 @code{avcodec_} for libavcodec, @code{swr_} for libswresample, etc).
 Check the existing code and choose names accordingly.
-
-@item
-Other public identifiers (struct, union, enum, macro, type names) must use their
-library's public prefix (@code{AV}, @code{Sws}, or @code{Swr}).
+Note that some symbols without these prefixes are also exported for
+retro-compatibility reasons. These exceptions are declared in the
+@code{lib<name>/lib<name>.v} files.
 @end itemize
 
 Furthermore, name space reserved for the system should not be invaded.
@@ -271,54 +204,54 @@ letter as they are reserved by the C standard. Names starting with @code{_}
 are reserved at the file level and may not be used for externally visible
 symbols. If in doubt, just avoid names starting with @code{_} altogether.
 
-@section Miscellaneous conventions
+@subsection Miscellaneous conventions
 
 @itemize @bullet
+@item
+fprintf and printf are forbidden in libavformat and libavcodec,
+please use av_log() instead.
+
 @item
 Casts should be used only when necessary. Unneeded parentheses
 should also be avoided if they don't make the code easier to understand.
 @end itemize
 
-@anchor{Development Policy}
-@chapter Development Policy
+@subsection Editor configuration
+In order to configure Vim to follow FFmpeg formatting conventions, paste
+the following snippet into your @file{.vimrc}:
+@example
+" indentation rules for FFmpeg: 4 spaces, no tabs
+set expandtab
+set shiftwidth=4
+set softtabstop=4
+set cindent
+set cinoptions=(0
+" Allow tabs in Makefiles.
+autocmd FileType make,automake set noexpandtab shiftwidth=8 softtabstop=8
+" Trailing whitespace and tabs are forbidden, so highlight them.
+highlight ForbiddenWhitespace ctermbg=red guibg=red
+match ForbiddenWhitespace /\s\+$\|\t/
+" Do not highlight spaces at the end of line while typing on that line.
+autocmd InsertEnter * match ForbiddenWhitespace /\t\|\s\+\%#\@@<!$/
+@end example
 
-@section Code behaviour
+For Emacs, add these roughly equivalent lines to your @file{.emacs.d/init.el}:
+@lisp
+(c-add-style "ffmpeg"
+             '("k&r"
+               (c-basic-offset . 4)
+               (indent-tabs-mode . nil)
+               (show-trailing-whitespace . t)
+               (c-offsets-alist
+                (statement-cont . (c-lineup-assignments +)))
+               )
+             )
+(setq c-default-style "ffmpeg")
+@end lisp
 
-@subheading Correctness
-The code must be valid. It must not crash, abort, access invalid pointers, leak
-memory, cause data races or signed integer overflow, or otherwise cause
-undefined behaviour. Error codes should be checked and, when applicable,
-forwarded to the caller.
+@section Development Policy
 
-@subheading Thread- and library-safety
-Our libraries may be called by multiple independent callers in the same process.
-These calls may happen from any number of threads and the different call sites
-may not be aware of each other - e.g. a user program may be calling our
-libraries directly, and use one or more libraries that also call our libraries.
-The code must behave correctly under such conditions.
-
-@subheading Robustness
-The code must treat as untrusted any bytestream received from a caller or read
-from a file, network, etc. It must not misbehave when arbitrary data is sent to
-it - typically it should print an error message and return
-@code{AVERROR_INVALIDDATA} on encountering invalid input data.
-
-@subheading Memory allocation
-The code must use the @code{av_malloc()} family of functions from
-@file{libavutil/mem.h} to perform all memory allocation, except in special cases
-(e.g. when interacting with an external library that requires a specific
-allocator to be used).
-
-All allocations should be checked and @code{AVERROR(ENOMEM)} returned on
-failure. A common mistake is that error paths leak memory - make sure that does
-not happen.
-
-@subheading stdio
-Our libraries must not access the stdio streams stdin/stdout/stderr directly
-(e.g. via @code{printf()} family of functions), as that is not library-safe. For
-logging, use @code{av_log()}.
-
-@section Patches/Committing
+@subsection Patches/Committing
 @subheading Licenses for patches must be compatible with FFmpeg.
 Contributions should be licensed under the
 @uref{http://www.gnu.org/licenses/lgpl-2.1.html, LGPL 2.1},
@@ -340,24 +273,13 @@ missing samples or an implementation with a small subset of features.
 Always check the mailing list for any reviewers with issues and test
 FATE before you push.
 
-@subheading Commit messages
-Commit messages are highly important tools for informing other developers on
-what a given change does and why. Every commit must always have a properly
-filled out commit message with the following format:
-@example
-area changed: short 1 line description
-
-details describing what and why and giving references.
-@end example
-
-If the commit addresses a known bug on our bug tracker or other external issue
-(e.g. CVE), the commit message should include the relevant bug ID(s) or other
-external identifiers. Note that this should be done in addition to a proper
-explanation and not instead of it. Comments such as "fixed!" or "Changed it."
-are not acceptable.
-
-When applying patches that have been discussed at length on the mailing list,
-reference the thread in the commit message.
+@subheading Keep the main commit message short with an extended description below.
+The commit message should have a short first line in the form of
+a @samp{topic: short description} as a header, separated by a newline
+from the body consisting of an explanation of why the change is necessary.
+If the commit fixes a known bug on the bug tracker, the commit message
+should include its bug ID. Referring to the issue on the bug tracker does
+not exempt you from writing an excerpt of the bug in the commit message.
 
 @subheading Testing must be adequate but not excessive.
 If it works for you, others, and passes FATE then it should be OK to commit
@@ -376,6 +298,15 @@ later on.
 Also if you have doubts about splitting or not splitting, do not hesitate to
 ask/discuss it on the developer mailing list.
 
+@subheading Ask before you change the build system (configure, etc).
+Do not commit changes to the build system (Makefiles, configure script)
+which change behavior, defaults etc, without asking first. The same
+applies to compiler warning fixes, trivial looking fixes and to code
+maintained by other developers. We usually have a reason for doing things
+the way we do. Send your changes as patches to the ffmpeg-devel mailing
+list, and if the code maintainers say OK, you may commit. This does not
+apply to files you wrote and/or maintain.
+
 @subheading Cosmetic changes should be kept in separate patches.
 We refuse source indentation and other cosmetic changes if they are mixed
 with functional changes, such commits will be rejected and removed. Every
@@ -390,12 +321,28 @@ NOTE: If you had to put if()@{ .. @} over a large (> 5 lines) chunk of code,
 then either do NOT change the indentation of the inner part within (do not
 move it to the right)! or do so in a separate commit
 
+@subheading Commit messages should always be filled out properly.
+Always fill out the commit log message. Describe in a few lines what you
+changed and why. You can refer to mailing list postings if you fix a
+particular bug. Comments such as "fixed!" or "Changed it." are unacceptable.
+Recommended format:
+
+@example
+area changed: Short 1 line description
+
+details describing what and why and giving references.
+@end example
+
 @subheading Credit the author of the patch.
 Make sure the author of the commit is set correctly. (see git commit --author)
 If you apply a patch, send an
 answer to ffmpeg-devel (or wherever you got the patch from) saying that
 you applied the patch.
 
+@subheading Complex patches should refer to discussion surrounding them.
+When applying patches that have been discussed (at length) on the mailing
+list, reference the thread in the log message.
+
 @subheading Always wait long enough before pushing changes
 Do NOT commit to code actively maintained by others without permission.
 Send a patch to ffmpeg-devel. If no one answers within a reasonable
@@ -403,7 +350,23 @@ time-frame (12h for build failures and security fixes, 3 days small changes,
 1 week for big patches) then commit your patch if you think it is OK.
 Also note, the maintainer can simply ask for more time to review!
 
-@section Code
+@subsection Code
+@subheading API/ABI changes should be discussed before they are made.
+Do not change behavior of the programs (renaming options etc) or public
+API or ABI without first discussing it on the ffmpeg-devel mailing list.
+Do not remove widely used functionality or features (redundant code can be removed).
+
+@subheading Remember to check if you need to bump versions for libav*.
+Depending on the change, you may need to change the version integer.
+Incrementing the first component means no backward compatibility to
+previous versions (e.g. removal of a function from the public API).
+Incrementing the second component means backward compatible change
+(e.g. addition of a function to the public API or extension of an
+existing data structure).
+Incrementing the third component means a noteworthy binary compatible
+change (e.g. encoder bug fix that matters for the decoder). The third
+component always starts at 100 to distinguish FFmpeg from Libav.
+
 @subheading Warnings for correct code may be disabled if there is no other option.
 Compiler warnings indicate potential bugs or code with bad style. If a type of
 warning always points to correct and clean code, that warning should
@@ -413,174 +376,17 @@ If it is a bug, the bug has to be fixed. If it is not, the code should
 be changed to not generate a warning unless that causes a slowdown
 or obfuscates the code.
 
-@section Library public interfaces
-Every library in FFmpeg provides a set of public APIs in its installed headers,
-which are those listed in the variable @code{HEADERS} in that library's
-@file{Makefile}. All identifiers defined in those headers (except for those
-explicitly documented otherwise), and corresponding symbols exported from
-compiled shared or static libraries are considered public interfaces and must
-comply with the API and ABI compatibility rules described in this section.
-
-Public APIs must be backward compatible within a given major version. I.e. any
-valid user code that compiles and works with a given library version must still
-compile and work with any later version, as long as the major version number is
-unchanged. "Valid user code" here means code that is calling our APIs in a
-documented and/or intended manner and is not relying on any undefined behavior.
-Incrementing the major version may break backward compatibility, but only to the
-extent described in @ref{Major version bumps}.
-
-We also guarantee backward ABI compatibility for shared and static libraries.
-I.e. it should be possible to replace a shared or static build of our library
-with a build of any later version (re-linking the user binary in the static
-case) without breaking any valid user binaries, as long as the major version
-number remains unchanged.
-
-@subsection Adding new interfaces
-Any new public identifiers in installed headers are considered new API - this
-includes new functions, structs, macros, enum values, typedefs, new fields in
-existing structs, new installed headers, etc. Consider the following
-guidelines when adding new APIs.
-
-@subsubheading Motivation
-While new APIs can be added relatively easily, changing or removing them is much
-harder due to abovementioned compatibility requirements. You should then
-consider carefully whether the functionality you are adding really needs to be
-exposed to our callers as new public API.
-
-Your new API should have at least one well-established use case outside of the
-library that cannot be easily achieved with existing APIs. Every library in
-FFmpeg also has a defined scope - your new API must fit within it.
-
-@subsubheading Replacing existing APIs
-If your new API is replacing an existing one, it should be strictly superior to
-it, so that the advantages of using the new API outweight the cost to the
-callers of changing their code. After adding the new API you should then
-deprecate the old one and schedule it for removal, as described in
-@ref{Removing interfaces}.
-
-If you deem an existing API deficient and want to fix it, the preferred approach
-in most cases is to add a differently-named replacement and deprecate the
-existing API rather than modify it. It is important to make the changes visible
-to our callers (e.g. through compile- or run-time deprecation warnings) and make
-it clear how to transition to the new API (e.g. in the Doxygen documentation or
-on the wiki).
-
-@subsubheading API design
-The FFmpeg libraries are used by a variety of callers to perform a wide range of
-multimedia-related processing tasks. You should therefore - within reason - try
-to design your new API for the broadest feasible set of use cases and avoid
-unnecessarily limiting it to a specific type of callers (e.g. just media
-playback or just transcoding).
-
-@subsubheading Consistency
-Check whether similar APIs already exist in FFmpeg. If they do, try to model
-your new addition on them to achieve better overall consistency.
-
-The naming of your new identifiers should follow the @ref{Naming conventions}
-and be aligned with other similar APIs, if applicable.
-
-@subsubheading Extensibility
-You should also consider how your API might be extended in the future in a
-backward-compatible way. If you are adding a new struct @code{AVFoo}, the
-standard approach is requiring the caller to always allocate it through a
-constructor function, typically named @code{av_foo_alloc()}. This way new fields
-may be added to the end of the struct without breaking ABI compatibility.
-Typically you will also want a destructor - @code{av_foo_free(AVFoo**)} that
-frees the indirectly supplied object (and its contents, if applicable) and
-writes @code{NULL} to the supplied pointer, thus eliminating the potential
-dangling pointer in the caller's memory.
-
-If you are adding new functions, consider whether it might be desirable to tweak
-their behavior in the future - you may want to add a flags argument, even though
-it would be unused initially.
-
-@subsubheading Documentation
-All new APIs must be documented as Doxygen-formatted comments above the
-identifiers you add to the public headers. You should also briefly mention the
-change in @file{doc/APIchanges}.
-
-@subsubheading Bump the version
-Backward-incompatible API or ABI changes require incrementing (bumping) the
-major version number, as described in @ref{Major version bumps}. Major
-bumps are significant events that happen on a schedule - so if your change
-strictly requires one you should add it under @code{#if} preprocesor guards that
-disable it until the next major bump happens.
-
-New APIs that can be added without breaking API or ABI compatibility require
-bumping the minor version number.
-
-Incrementing the third (micro) version component means a noteworthy binary
-compatible change (e.g. encoder bug fix that matters for the decoder). The third
-component always starts at 100 to distinguish FFmpeg from Libav.
-
-@anchor{Removing interfaces}
-@subsection Removing interfaces
-Due to abovementioned compatibility guarantees, removing APIs is an involved
-process that should only be undertaken with good reason. Typically a deficient,
-restrictive, or otherwise inadequate API is replaced by a superior one, though
-it does at times happen that we remove an API without any replacement (e.g. when
-the feature it provides is deemed not worth the maintenance effort, out of scope
-of the project, fundamentally flawed, etc.).
-
-The removal has two steps - first the API is deprecated and scheduled for
-removal, but remains present and functional. The second step is actually
-removing the API - this is described in @ref{Major version bumps}.
-
-To deprecate an API you should signal to our users that they should stop using
-it. E.g. if you intend to remove struct members or functions, you should mark
-them with @code{attribute_deprecated}. When this cannot be done, it may be
-possible to detect the use of the deprecated API at runtime and print a warning
-(though take care not to print it too often). You should also document the
-deprecation (and the replacement, if applicable) in the relevant Doxygen
-documentation block.
-
-Finally, you should define a deprecation guard along the lines of
-@code{#define FF_API_<FOO> (LIBAVBAR_VERSION_MAJOR < XX)} (where XX is the major
-version in which the API will be removed) in @file{libavbar/version_major.h}
-(@file{version.h} in case of @code{libavutil}). Then wrap all uses of the
-deprecated API in @code{#if FF_API_<FOO> .... #endif}, so that the code will
-automatically get disabled once the major version reaches XX. You can also use
-@code{FF_DISABLE_DEPRECATION_WARNINGS} and @code{FF_ENABLE_DEPRECATION_WARNINGS}
-to suppress compiler deprecation warnings inside these guards. You should test
-that the code compiles and works with the guard macro evaluating to both true
-and false.
-
-@anchor{Major version bumps}
-@subsection Major version bumps
-A major version bump signifies an API and/or ABI compatibility break. To reduce
-the negative effects on our callers, who are required to adapt their code,
-backward-incompatible changes during a major bump should be limited to:
-@itemize @bullet
-@item
-Removing previously deprecated APIs.
-
-@item
-Performing ABI- but not API-breaking changes, like reordering struct contents.
-@end itemize
-
-@section Documentation/Other
-@subheading Subscribe to the ffmpeg-devel mailing list.
-It is important to be subscribed to the
-@uref{https://lists.ffmpeg.org/mailman/listinfo/ffmpeg-devel, ffmpeg-devel}
-mailing list. Almost any non-trivial patch is to be sent there for review.
-Other developers may have comments about your contribution. We expect you see
-those comments, and to improve it if requested. (N.B. Experienced committers
-have other channels, and may sometimes skip review for trivial fixes.) Also,
-discussion here about bug fixes and FFmpeg improvements by other developers may
-be helpful information for you. Finally, by being a list subscriber, your
-contribution will be posted immediately to the list, without the moderation
-hold which messages from non-subscribers experience.
-
-However, it is more important to the project that we receive your patch than
-that you be subscribed to the ffmpeg-devel list. If you have a patch, and don't
-want to subscribe and discuss the patch, then please do send it to the list
-anyway.
+@subheading Check untrusted input properly.
+Never write to unallocated memory, never write over the end of arrays,
+always check values read from some untrusted source before using them
+as array index or other risky things.
 
+@subsection Documentation/Other
 @subheading Subscribe to the ffmpeg-cvslog mailing list.
-Diffs of all commits are sent to the
-@uref{https://lists.ffmpeg.org/mailman/listinfo/ffmpeg-cvslog, ffmpeg-cvslog}
-mailing list. Some developers read this list to review all code base changes
-from all sources. Subscribing to this list is not mandatory.
+It is important to do this as the diffs of all commits are sent there and
+reviewed by all the other developers. Bugs and possible improvements or
+general questions regarding commits are discussed there. We expect you to
+react if problems with your code are uncovered.
 
 @subheading Keep the documentation up to date.
 Update the documentation if you change behavior or add features. If you are
@@ -600,8 +406,37 @@ finding a new maintainer and also don't forget to update the @file{MAINTAINERS}
 
 We think our rules are not too hard. If you have comments, contact us.
 
+@section Code of conduct
+
+Be friendly and respectful towards others and third parties.
+Treat others the way you yourself want to be treated.
+
+Be considerate. Not everyone shares the same viewpoint and priorities as you do.
+Different opinions and interpretations help the project.
+Looking at issues from a different perspective assists development.
+
+Do not assume malice for things that can be attributed to incompetence. Even if
+it is malice, it's rarely good to start with that as initial assumption.
+
+Stay friendly even if someone acts contrarily. Everyone has a bad day
+once in a while.
+If you yourself have a bad day or are angry then try to take a break and reply
+once you are calm and without anger if you have to.
+
+Try to help other team members and cooperate if you can.
+
+The goal of software development is to create technical excellence, not for any
+individual to be better and "win" against the others. Large software projects
+are only possible and successful through teamwork.
+
+If someone struggles do not put them down. Give them a helping hand
+instead and point them in the right direction.
+
+Finally, keep in mind the immortal words of Bill and Ted,
+"Be excellent to each other."
+
 @anchor{Submitting patches}
-@chapter Submitting patches
+@section Submitting patches
 
 First, read the @ref{Coding Rules} above if you did not yet, in particular
 the rules regarding patch submission.
@@ -640,22 +475,6 @@ patch is inline or attached per mail.
 You can check @url{https://patchwork.ffmpeg.org}, if your patch does not show up, its mime type
 likely was wrong.
 
-@subheading Sending patches from email clients
-Using @code{git send-email} might not be desirable for everyone. The
-following trick allows to send patches via email clients in a safe
-way. It has been tested with Outlook and Thunderbird (with X-Unsent
-extension) and might work with other applications.
-
-Create your patch like this:
-
-@verbatim
-git format-patch -s -o "outputfolder" --add-header "X-Unsent: 1" --suffix .eml --to ffmpeg-devel@ffmpeg.org -1 1a2b3c4d
-@end verbatim
-
-Now you'll just need to open the eml file with the email application
-and execute 'Send'.
-
-@subheading Reviews
 Your patch will be reviewed on the mailing list. You will likely be asked
 to make some changes and are expected to send in an improved version that
 incorporates the requests from the review. This process may go through
@@ -666,7 +485,7 @@ Give us a few days to react. But if some time passes without reaction,
 send a reminder by email. Your patch should eventually be dealt with.
 
 
-@chapter New codecs or formats checklist
+@section New codecs or formats checklist
 
 @enumerate
 @item
@@ -718,7 +537,7 @@ Did you make sure it compiles standalone, i.e. with
 @end enumerate
 
 
-@chapter Patch submission checklist
+@section patch submission checklist
 
 @enumerate
 @item
@@ -728,9 +547,9 @@ Does @code{make fate} pass with the patch applied?
 Was the patch generated with git format-patch or send-email?
 
 @item
-Did you sign-off your patch? (@code{git commit -s})
-See @uref{https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/Documentation/process/submitting-patches.rst, Sign your work} for the meaning
-of @dfn{sign-off}.
+Did you sign off your patch? (git commit -s)
+See @url{http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob_plain;f=Documentation/SubmittingPatches} for the meaning
+of sign off.
 
 @item
 Did you provide a clear git commit log message?
@@ -787,7 +606,7 @@ If the patch fixes a bug, did you provide a verbose analysis of the bug?
 If the patch fixes a bug, did you provide enough information, including
 a sample, so the bug can be reproduced and the fix can be verified?
 Note please do not attach samples >100k to mails but rather provide a
-URL, you can upload to @url{https://streams.videolan.org/upload/}.
+URL, you can upload to ftp://upload.ffmpeg.org.
 
 @item
 Did you provide a verbose summary about what the patch does change?
@@ -816,20 +635,22 @@ Lines with similar content should be aligned vertically when doing so
 improves readability.
 
 @item
-Consider adding a regression test for your code. All new modules
-should be covered by tests. That includes demuxers, muxers, decoders, encoders
-filters, bitstream filters, parsers. If its not possible to do that, add
-an explanation why to your patchset, its ok to not test if theres a reason.
+Consider adding a regression test for your code.
 
 @item
 If you added YASM code please check that things still work with --disable-yasm.
 
+@item
+Make sure you check the return values of function and return appropriate
+error codes. Especially memory allocation functions like @code{av_malloc()}
+are notoriously left unchecked, which is a serious problem.
+
 @item
 Test your code with valgrind and or Address Sanitizer to ensure it's free
 of leaks, out of array accesses, etc.
 @end enumerate
 
-@chapter Patch review process
+@section Patch review process
 
 All patches posted to ffmpeg-devel will be reviewed, unless they contain a
 clear note that the patch is not for the git master branch.
@@ -860,7 +681,7 @@ to be reviewed, please consider helping to review other patches, that is a great
 way to get everyone's patches reviewed sooner.
 
 @anchor{Regression tests}
-@chapter Regression tests
+@section Regression tests
 
 Before submitting a patch (or committing to the repository), you should at least
 test that you did not break anything.
@@ -871,9 +692,7 @@ Running 'make fate' accomplishes this, please see @url{fate.html} for details.
 this case, the reference results of the regression tests shall be modified
 accordingly].
 
-@section Adding files to the fate-suite dataset
-
-If you need a sample uploaded send a mail to samples-request.
+@subsection Adding files to the fate-suite dataset
 
 When there is no muxer or encoder available to generate test media for a
 specific test then the media has to be included in the fate-suite.
@@ -884,7 +703,7 @@ Once you have a working fate test and fate sample, provide in the commit
 message or introductory message for the patch series that you post to
 the ffmpeg-devel mailing list, a direct link to download the sample media.
 
-@section Visualizing Test Coverage
+@subsection Visualizing Test Coverage
 
 The FFmpeg build system allows visualizing the test coverage in an easy
 manner with the coverage tools @code{gcov}/@code{lcov}.  This involves
@@ -911,7 +730,7 @@ You can use the command @code{make lcov-reset} to reset the coverage
 measurements. You will need to rerun @code{make lcov} after running a
 new test.
 
-@section Using Valgrind
+@subsection Using Valgrind
 
 The configure script provides a shortcut for using valgrind to spot bugs
 related to memory handling. Just add the option
@@ -925,7 +744,7 @@ In case you need finer control over how valgrind is invoked, use the
 your configure line instead.
 
 @anchor{Release process}
-@chapter Release process
+@section Release process
 
 FFmpeg maintains a set of @strong{release branches}, which are the
 recommended deliverable for system integrators and distributors (such as
@@ -957,7 +776,7 @@ adjustments to the symbol versioning file. Please discuss such changes
 on the @strong{ffmpeg-devel} mailing list in time to allow forward planning.
 
 @anchor{Criteria for Point Releases}
-@section Criteria for Point Releases
+@subsection Criteria for Point Releases
 
 Changes that match the following criteria are valid candidates for
 inclusion into a point release:
@@ -981,7 +800,7 @@ point releases of the same release branch.
 The order for checking the rules is (1 OR 2 OR 3) AND 4.
 
 
-@section Release Checklist
+@subsection Release Checklist
 
 The release process involves the following steps:
 

doc/doxy-wrapper.sh

@@ -1,13 +1,10 @@
 #!/bin/sh
 
 OUT_DIR="${1}"
-SRC_DIR="${2}"
-DOXYFILE="${3}"
-DOXYGEN="${4}"
+DOXYFILE="${2}"
+DOXYGEN="${3}"
 
-shift 4
-
-cd ${SRC_DIR}
+shift 3
 
 if [ -e "VERSION" ]; then
     VERSION=`cat "VERSION"`

doc/examples/.gitignore

@@ -1,4 +1,4 @@
-/avio_list_dir
+/avio_dir_cmd
 /avio_reading
 /decode_audio
 /decode_video
@@ -10,7 +10,6 @@
 /filtering_audio
 /filtering_video
 /http_multiclient
-/hw_decode
 /metadata
 /muxing
 /pc-uninstalled
@@ -20,6 +19,3 @@
 /scaling_video
 /transcode_aac
 /transcoding
-/vaapi_encode
-/vaapi_transcode
-/qsv_transcode

doc/examples/Makefile

@@ -1,65 +1,49 @@
-EXAMPLES-$(CONFIG_AVIO_HTTP_SERVE_FILES)     += avio_http_serve_files
-EXAMPLES-$(CONFIG_AVIO_LIST_DIR_EXAMPLE)     += avio_list_dir
-EXAMPLES-$(CONFIG_AVIO_READ_CALLBACK_EXAMPLE) += avio_read_callback
-EXAMPLES-$(CONFIG_DECODE_AUDIO_EXAMPLE)      += decode_audio
-EXAMPLES-$(CONFIG_DECODE_FILTER_AUDIO_EXAMPLE) += decode_filter_audio
-EXAMPLES-$(CONFIG_DECODE_FILTER_VIDEO_EXAMPLE) += decode_filter_video
-EXAMPLES-$(CONFIG_DECODE_VIDEO_EXAMPLE)      += decode_video
-EXAMPLES-$(CONFIG_DEMUX_DECODE_EXAMPLE)      += demux_decode
-EXAMPLES-$(CONFIG_ENCODE_AUDIO_EXAMPLE)      += encode_audio
-EXAMPLES-$(CONFIG_ENCODE_VIDEO_EXAMPLE)      += encode_video
-EXAMPLES-$(CONFIG_EXTRACT_MVS_EXAMPLE)       += extract_mvs
-EXAMPLES-$(CONFIG_FILTER_AUDIO_EXAMPLE)      += filter_audio
-EXAMPLES-$(CONFIG_HW_DECODE_EXAMPLE)         += hw_decode
-EXAMPLES-$(CONFIG_MUX_EXAMPLE)               += mux
-EXAMPLES-$(CONFIG_QSV_DECODE_EXAMPLE)        += qsv_decode
-EXAMPLES-$(CONFIG_REMUX_EXAMPLE)             += remux
-EXAMPLES-$(CONFIG_RESAMPLE_AUDIO_EXAMPLE)    += resample_audio
-EXAMPLES-$(CONFIG_SCALE_VIDEO_EXAMPLE)       += scale_video
-EXAMPLES-$(CONFIG_SHOW_METADATA_EXAMPLE)     += show_metadata
-EXAMPLES-$(CONFIG_TRANSCODE_AAC_EXAMPLE)     += transcode_aac
-EXAMPLES-$(CONFIG_TRANSCODE_EXAMPLE)         += transcode
-EXAMPLES-$(CONFIG_VAAPI_ENCODE_EXAMPLE)      += vaapi_encode
-EXAMPLES-$(CONFIG_VAAPI_TRANSCODE_EXAMPLE)   += vaapi_transcode
-EXAMPLES-$(CONFIG_QSV_TRANSCODE_EXAMPLE)     += qsv_transcode
+# use pkg-config for getting CFLAGS and LDLIBS
+FFMPEG_LIBS=    libavdevice                        \
+                libavformat                        \
+                libavfilter                        \
+                libavcodec                         \
+                libswresample                      \
+                libswscale                         \
+                libavutil                          \
 
-EXAMPLES       := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)$(EXESUF))
-EXAMPLES_G     := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)_g$(EXESUF))
-ALL_EXAMPLES   := $(EXAMPLES) $(EXAMPLES-:%=doc/examples/%$(PROGSSUF)$(EXESUF))
-ALL_EXAMPLES_G := $(EXAMPLES_G) $(EXAMPLES-:%=doc/examples/%$(PROGSSUF)_g$(EXESUF))
-PROGS          += $(EXAMPLES)
+CFLAGS += -Wall -g
+CFLAGS := $(shell pkg-config --cflags $(FFMPEG_LIBS)) $(CFLAGS)
+LDLIBS := $(shell pkg-config --libs $(FFMPEG_LIBS)) $(LDLIBS)
 
-EXAMPLE_MAKEFILE := $(SRC_PATH)/doc/examples/Makefile
-EXAMPLES_FILES := $(wildcard $(SRC_PATH)/doc/examples/*.c) $(SRC_PATH)/doc/examples/README $(EXAMPLE_MAKEFILE)
+EXAMPLES=       avio_dir_cmd                       \
+                avio_reading                       \
+                decode_audio                       \
+                decode_video                       \
+                demuxing_decoding                  \
+                encode_audio                       \
+                encode_video                       \
+                extract_mvs                        \
+                filtering_video                    \
+                filtering_audio                    \
+                http_multiclient                   \
+                metadata                           \
+                muxing                             \
+                remuxing                           \
+                resampling_audio                   \
+                scaling_video                      \
+                transcode_aac                      \
+                transcoding                        \
 
-$(foreach P,$(EXAMPLES),$(eval OBJS-$(P:%$(PROGSSUF)$(EXESUF)=%) = $(P:%$(PROGSSUF)$(EXESUF)=%).o))
-$(EXAMPLES_G): %$(PROGSSUF)_g$(EXESUF): %.o
+OBJS=$(addsuffix .o,$(EXAMPLES))
 
-examples: $(EXAMPLES)
+# the following examples make explicit use of the math library
+avcodec:           LDLIBS += -lm
+encode_audio:      LDLIBS += -lm
+muxing:            LDLIBS += -lm
+resampling_audio:  LDLIBS += -lm
 
-$(EXAMPLES:%$(PROGSSUF)$(EXESUF)=%.o): | doc/examples
-OUTDIRS += doc/examples
+.phony: all clean-test clean
 
-DOXY_INPUT += $(EXAMPLES:%$(PROGSSUF)$(EXESUF)=%.c)
+all: $(OBJS) $(EXAMPLES)
 
-install: install-examples
+clean-test:
+	$(RM) test*.pgm test.h264 test.mp2 test.sw test.mpg
 
-install-examples: $(EXAMPLES_FILES)
-	$(Q)mkdir -p "$(DATADIR)/examples"
-	$(INSTALL) -m 644 $(EXAMPLES_FILES) "$(DATADIR)/examples"
-	$(INSTALL) -m 644 $(EXAMPLE_MAKEFILE:%=%.example) "$(DATADIR)/examples/Makefile"
-
-uninstall: uninstall-examples
-
-uninstall-examples:
-	$(RM) -r "$(DATADIR)/examples"
-
-examplesclean:
-	$(RM) $(ALL_EXAMPLES) $(ALL_EXAMPLES_G)
-	$(RM) $(CLEANSUFFIXES:%=doc/examples/%)
-
-docclean:: examplesclean
-
--include $(wildcard $(EXAMPLES:%$(PROGSSUF)$(EXESUF)=%.d))
-
-.PHONY: examples
+clean: clean-test
+	$(RM) $(EXAMPLES) $(OBJS)

doc/examples/Makefile.example

@@ -1,57 +0,0 @@
-# use pkg-config for getting CFLAGS and LDLIBS
-FFMPEG_LIBS=    libavdevice                        \
-                libavformat                        \
-                libavfilter                        \
-                libavcodec                         \
-                libswresample                      \
-                libswscale                         \
-                libavutil                          \
-
-CFLAGS += -Wall -g
-CFLAGS := $(shell pkg-config --cflags $(FFMPEG_LIBS)) $(CFLAGS)
-LDLIBS := $(shell pkg-config --libs $(FFMPEG_LIBS)) $(LDLIBS)
-
-# missing the following targets, since they need special options in the FFmpeg build:
-# qsv_decode
-# qsv_transcode
-# vaapi_encode
-# vaapi_transcode
-
-EXAMPLES=\
-                avio_http_serve_files              \
-                avio_list_dir                      \
-                avio_read_callback                 \
-                decode_audio                       \
-                decode_filter_audio                \
-                decode_filter_video                \
-                decode_video                       \
-                demux_decode                       \
-                encode_audio                       \
-                encode_video                       \
-                extract_mvs                        \
-                hw_decode                          \
-                mux                                \
-                remux                              \
-                resample_audio                     \
-                scale_video                        \
-                show_metadata                      \
-                transcode_aac                      \
-                transcode
-
-OBJS=$(addsuffix .o,$(EXAMPLES))
-
-# the following examples make explicit use of the math library
-avcodec:           LDLIBS += -lm
-encode_audio:      LDLIBS += -lm
-mux:               LDLIBS += -lm
-resample_audio:    LDLIBS += -lm
-
-.phony: all clean-test clean
-
-all: $(OBJS) $(EXAMPLES)
-
-clean-test:
-	$(RM) test*.pgm test.h264 test.mp2 test.sw test.mpg
-
-clean: clean-test
-	$(RM) $(EXAMPLES) $(OBJS)

doc/examples/README

@@ -7,10 +7,8 @@ that you have them installed and working on your system.
 
 Method 1: build the installed examples in a generic read/write user directory
 
-Copy to a read/write user directory and run:
-make -f Makefile.example
-
-It will link to the libraries on your system, assuming the PKG_CONFIG_PATH is
+Copy to a read/write user directory and just use "make", it will link
+to the libraries on your system, assuming the PKG_CONFIG_PATH is
 correctly configured.
 
 Method 2: build the examples in-tree
@@ -22,4 +20,4 @@ examples using "make examplesclean"
 
 If you want to try the dedicated Makefile examples (to emulate the first
 method), go into doc/examples and run a command such as
-PKG_CONFIG_PATH=pc-uninstalled make -f Makefile.example
+PKG_CONFIG_PATH=pc-uninstalled make.

doc/examples/avio_dir_cmd.c

@@ -20,13 +20,6 @@
  * THE SOFTWARE.
  */
 
-/**
- * @file libavformat AVIOContext list directory API usage example
- * @example avio_list_dir.c
- *
- * Show how to list directories through the libavformat AVIOContext API.
- */
-
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libavformat/avio.h>
@@ -109,15 +102,38 @@ static int list_op(const char *input_dir)
     return ret;
 }
 
+static int del_op(const char *url)
+{
+    int ret = avpriv_io_delete(url);
+    if (ret < 0)
+        av_log(NULL, AV_LOG_ERROR, "Cannot delete '%s': %s.\n", url, av_err2str(ret));
+    return ret;
+}
+
+static int move_op(const char *src, const char *dst)
+{
+    int ret = avpriv_io_move(src, dst);
+    if (ret < 0)
+        av_log(NULL, AV_LOG_ERROR, "Cannot move '%s' into '%s': %s.\n", src, dst, av_err2str(ret));
+    return ret;
+}
+
+
 static void usage(const char *program_name)
 {
-    fprintf(stderr, "usage: %s input_dir\n"
-            "API example program to show how to list files in directory "
-            "accessed through AVIOContext.\n", program_name);
+    fprintf(stderr, "usage: %s OPERATION entry1 [entry2]\n"
+            "API example program to show how to manipulate resources "
+            "accessed through AVIOContext.\n"
+            "OPERATIONS:\n"
+            "list      list content of the directory\n"
+            "move      rename content in directory\n"
+            "del       delete content in directory\n",
+            program_name);
 }
 
 int main(int argc, char *argv[])
 {
+    const char *op = NULL;
     int ret;
 
     av_log_set_level(AV_LOG_DEBUG);
@@ -127,9 +143,36 @@ int main(int argc, char *argv[])
         return 1;
     }
 
+    /* register codecs and formats and other lavf/lavc components*/
+    av_register_all();
     avformat_network_init();
 
-    ret = list_op(argv[1]);
+    op = argv[1];
+    if (strcmp(op, "list") == 0) {
+        if (argc < 3) {
+            av_log(NULL, AV_LOG_INFO, "Missing argument for list operation.\n");
+            ret = AVERROR(EINVAL);
+        } else {
+            ret = list_op(argv[2]);
+        }
+    } else if (strcmp(op, "del") == 0) {
+        if (argc < 3) {
+            av_log(NULL, AV_LOG_INFO, "Missing argument for del operation.\n");
+            ret = AVERROR(EINVAL);
+        } else {
+            ret = del_op(argv[2]);
+        }
+    } else if (strcmp(op, "move") == 0) {
+        if (argc < 4) {
+            av_log(NULL, AV_LOG_INFO, "Missing argument for move operation.\n");
+            ret = AVERROR(EINVAL);
+        } else {
+            ret = move_op(argv[2], argv[3]);
+        }
+    } else {
+        av_log(NULL, AV_LOG_INFO, "Invalid operation %s\n", op);
+        ret = AVERROR(EINVAL);
+    }
 
     avformat_network_deinit();
 

doc/examples/avio_reading.c

@@ -21,11 +21,12 @@
  */
 
 /**
- * @file libavformat AVIOContext read callback API usage example
- * @example avio_read_callback.c
+ * @file
+ * libavformat AVIOContext API example.
  *
  * Make libavformat demuxer access media content through a custom
  * AVIOContext read callback.
+ * @example avio_reading.c
  */
 
 #include <libavcodec/avcodec.h>
@@ -43,8 +44,6 @@ static int read_packet(void *opaque, uint8_t *buf, int buf_size)
     struct buffer_data *bd = (struct buffer_data *)opaque;
     buf_size = FFMIN(buf_size, bd->size);
 
-    if (!buf_size)
-        return AVERROR_EOF;
     printf("ptr:%p size:%zu\n", bd->ptr, bd->size);
 
     /* copy internal buffer data to buf */
@@ -73,6 +72,9 @@ int main(int argc, char *argv[])
     }
     input_filename = argv[1];
 
+    /* register codecs and formats and other lavf/lavc components*/
+    av_register_all();
+
     /* slurp file content into buffer */
     ret = av_file_map(input_filename, &buffer, &buffer_size, 0, NULL);
     if (ret < 0)
@@ -116,12 +118,11 @@ int main(int argc, char *argv[])
 
 end:
     avformat_close_input(&fmt_ctx);
-
     /* note: the internal buffer could have changed, and be != avio_ctx_buffer */
-    if (avio_ctx)
+    if (avio_ctx) {
         av_freep(&avio_ctx->buffer);
-    avio_context_free(&avio_ctx);
-
+        av_freep(&avio_ctx);
+    }
     av_file_unmap(buffer, buffer_size);
 
     if (ret < 0) {

doc/examples/decode_audio.c

@@ -21,11 +21,10 @@
  */
 
 /**
- * @file libavcodec audio decoding API usage example
- * @example decode_audio.c
+ * @file
+ * audio decoding with libavcodec API example
  *
- * Decode data from an MP2 input file and generate a raw audio file to
- * be played with ffplay.
+ * @example decode_audio.c
  */
 
 #include <stdio.h>
@@ -40,85 +39,16 @@
 #define AUDIO_INBUF_SIZE 20480
 #define AUDIO_REFILL_THRESH 4096
 
-static int get_format_from_sample_fmt(const char **fmt,
-                                      enum AVSampleFormat sample_fmt)
-{
-    int i;
-    struct sample_fmt_entry {
-        enum AVSampleFormat sample_fmt; const char *fmt_be, *fmt_le;
-    } sample_fmt_entries[] = {
-        { AV_SAMPLE_FMT_U8,  "u8",    "u8"    },
-        { AV_SAMPLE_FMT_S16, "s16be", "s16le" },
-        { AV_SAMPLE_FMT_S32, "s32be", "s32le" },
-        { AV_SAMPLE_FMT_FLT, "f32be", "f32le" },
-        { AV_SAMPLE_FMT_DBL, "f64be", "f64le" },
-    };
-    *fmt = NULL;
-
-    for (i = 0; i < FF_ARRAY_ELEMS(sample_fmt_entries); i++) {
-        struct sample_fmt_entry *entry = &sample_fmt_entries[i];
-        if (sample_fmt == entry->sample_fmt) {
-            *fmt = AV_NE(entry->fmt_be, entry->fmt_le);
-            return 0;
-        }
-    }
-
-    fprintf(stderr,
-            "sample format %s is not supported as output format\n",
-            av_get_sample_fmt_name(sample_fmt));
-    return -1;
-}
-
-static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame,
-                   FILE *outfile)
-{
-    int i, ch;
-    int ret, data_size;
-
-    /* send the packet with the compressed data to the decoder */
-    ret = avcodec_send_packet(dec_ctx, pkt);
-    if (ret < 0) {
-        fprintf(stderr, "Error submitting the packet to the decoder\n");
-        exit(1);
-    }
-
-    /* read all the output frames (in general there may be any number of them */
-    while (ret >= 0) {
-        ret = avcodec_receive_frame(dec_ctx, frame);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
-            return;
-        else if (ret < 0) {
-            fprintf(stderr, "Error during decoding\n");
-            exit(1);
-        }
-        data_size = av_get_bytes_per_sample(dec_ctx->sample_fmt);
-        if (data_size < 0) {
-            /* This should not occur, checking just for paranoia */
-            fprintf(stderr, "Failed to calculate data size\n");
-            exit(1);
-        }
-        for (i = 0; i < frame->nb_samples; i++)
-            for (ch = 0; ch < dec_ctx->ch_layout.nb_channels; ch++)
-                fwrite(frame->data[ch] + data_size*i, 1, data_size, outfile);
-    }
-}
-
 int main(int argc, char **argv)
 {
     const char *outfilename, *filename;
     const AVCodec *codec;
     AVCodecContext *c= NULL;
-    AVCodecParserContext *parser = NULL;
-    int len, ret;
+    int len;
     FILE *f, *outfile;
     uint8_t inbuf[AUDIO_INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
-    uint8_t *data;
-    size_t   data_size;
-    AVPacket *pkt;
+    AVPacket avpkt;
     AVFrame *decoded_frame = NULL;
-    enum AVSampleFormat sfmt;
-    int n_channels = 0;
-    const char *fmt;
 
     if (argc <= 2) {
         fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
@@ -127,7 +57,10 @@ int main(int argc, char **argv)
     filename    = argv[1];
     outfilename = argv[2];
 
-    pkt = av_packet_alloc();
+    /* register all the codecs */
+    avcodec_register_all();
+
+    av_init_packet(&avpkt);
 
     /* find the MPEG audio decoder */
     codec = avcodec_find_decoder(AV_CODEC_ID_MP2);
@@ -136,12 +69,6 @@ int main(int argc, char **argv)
         exit(1);
     }
 
-    parser = av_parser_init(codec->id);
-    if (!parser) {
-        fprintf(stderr, "Parser not found\n");
-        exit(1);
-    }
-
     c = avcodec_alloc_context3(codec);
     if (!c) {
         fprintf(stderr, "Could not allocate audio codec context\n");
@@ -166,10 +93,13 @@ int main(int argc, char **argv)
     }
 
     /* decode until eof */
-    data      = inbuf;
-    data_size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f);
+    avpkt.data = inbuf;
+    avpkt.size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f);
+
+    while (avpkt.size > 0) {
+        int i, ch;
+        int got_frame = 0;
 
-    while (data_size > 0) {
         if (!decoded_frame) {
             if (!(decoded_frame = av_frame_alloc())) {
                 fprintf(stderr, "Could not allocate audio frame\n");
@@ -177,61 +107,46 @@ int main(int argc, char **argv)
             }
         }
 
-        ret = av_parser_parse2(parser, c, &pkt->data, &pkt->size,
-                               data, data_size,
-                               AV_NOPTS_VALUE, AV_NOPTS_VALUE, 0);
-        if (ret < 0) {
-            fprintf(stderr, "Error while parsing\n");
+        len = avcodec_decode_audio4(c, decoded_frame, &got_frame, &avpkt);
+        if (len < 0) {
+            fprintf(stderr, "Error while decoding\n");
             exit(1);
         }
-        data      += ret;
-        data_size -= ret;
-
-        if (pkt->size)
-            decode(c, pkt, decoded_frame, outfile);
-
-        if (data_size < AUDIO_REFILL_THRESH) {
-            memmove(inbuf, data, data_size);
-            data = inbuf;
-            len = fread(data + data_size, 1,
-                        AUDIO_INBUF_SIZE - data_size, f);
+        if (got_frame) {
+            /* if a frame has been decoded, output it */
+            int data_size = av_get_bytes_per_sample(c->sample_fmt);
+            if (data_size < 0) {
+                /* This should not occur, checking just for paranoia */
+                fprintf(stderr, "Failed to calculate data size\n");
+                exit(1);
+            }
+            for (i=0; i<decoded_frame->nb_samples; i++)
+                for (ch=0; ch<c->channels; ch++)
+                    fwrite(decoded_frame->data[ch] + data_size*i, 1, data_size, outfile);
+        }
+        avpkt.size -= len;
+        avpkt.data += len;
+        avpkt.dts =
+        avpkt.pts = AV_NOPTS_VALUE;
+        if (avpkt.size < AUDIO_REFILL_THRESH) {
+            /* Refill the input buffer, to avoid trying to decode
+             * incomplete frames. Instead of this, one could also use
+             * a parser, or use a proper container format through
+             * libavformat. */
+            memmove(inbuf, avpkt.data, avpkt.size);
+            avpkt.data = inbuf;
+            len = fread(avpkt.data + avpkt.size, 1,
+                        AUDIO_INBUF_SIZE - avpkt.size, f);
             if (len > 0)
-                data_size += len;
+                avpkt.size += len;
         }
     }
 
-    /* flush the decoder */
-    pkt->data = NULL;
-    pkt->size = 0;
-    decode(c, pkt, decoded_frame, outfile);
-
-    /* print output pcm infomations, because there have no metadata of pcm */
-    sfmt = c->sample_fmt;
-
-    if (av_sample_fmt_is_planar(sfmt)) {
-        const char *packed = av_get_sample_fmt_name(sfmt);
-        printf("Warning: the sample format the decoder produced is planar "
-               "(%s). This example will output the first channel only.\n",
-               packed ? packed : "?");
-        sfmt = av_get_packed_sample_fmt(sfmt);
-    }
-
-    n_channels = c->ch_layout.nb_channels;
-    if ((ret = get_format_from_sample_fmt(&fmt, sfmt)) < 0)
-        goto end;
-
-    printf("Play the output audio file with the command:\n"
-           "ffplay -f %s -ac %d -ar %d %s\n",
-           fmt, n_channels, c->sample_rate,
-           outfilename);
-end:
     fclose(outfile);
     fclose(f);
 
     avcodec_free_context(&c);
-    av_parser_close(parser);
     av_frame_free(&decoded_frame);
-    av_packet_free(&pkt);
 
     return 0;
 }

doc/examples/decode_video.c

@@ -21,11 +21,10 @@
  */
 
 /**
- * @file libavcodec video decoding API usage example
- * @example decode_video.c *
+ * @file
+ * video decoding with libavcodec API example
  *
- * Read from an MPEG1 video file, decode frames, and generate PGM images as
- * output.
+ * @example decode_video.c
  */
 
 #include <stdio.h>
@@ -42,71 +41,62 @@ static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,
     FILE *f;
     int i;
 
-    f = fopen(filename,"wb");
+    f = fopen(filename,"w");
     fprintf(f, "P5\n%d %d\n%d\n", xsize, ysize, 255);
     for (i = 0; i < ysize; i++)
         fwrite(buf + i * wrap, 1, xsize, f);
     fclose(f);
 }
 
-static void decode(AVCodecContext *dec_ctx, AVFrame *frame, AVPacket *pkt,
-                   const char *filename)
+static int decode_write_frame(const char *outfilename, AVCodecContext *avctx,
+                              AVFrame *frame, int *frame_count, AVPacket *pkt, int last)
 {
+    int len, got_frame;
     char buf[1024];
-    int ret;
 
-    ret = avcodec_send_packet(dec_ctx, pkt);
-    if (ret < 0) {
-        fprintf(stderr, "Error sending a packet for decoding\n");
-        exit(1);
+    len = avcodec_decode_video2(avctx, frame, &got_frame, pkt);
+    if (len < 0) {
+        fprintf(stderr, "Error while decoding frame %d\n", *frame_count);
+        return len;
     }
-
-    while (ret >= 0) {
-        ret = avcodec_receive_frame(dec_ctx, frame);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
-            return;
-        else if (ret < 0) {
-            fprintf(stderr, "Error during decoding\n");
-            exit(1);
-        }
-
-        printf("saving frame %3"PRId64"\n", dec_ctx->frame_num);
+    if (got_frame) {
+        printf("Saving %sframe %3d\n", last ? "last " : "", *frame_count);
         fflush(stdout);
 
-        /* the picture is allocated by the decoder. no need to
-           free it */
-        snprintf(buf, sizeof(buf), "%s-%"PRId64, filename, dec_ctx->frame_num);
+        /* the picture is allocated by the decoder, no need to free it */
+        snprintf(buf, sizeof(buf), "%s-%d", outfilename, *frame_count);
         pgm_save(frame->data[0], frame->linesize[0],
                  frame->width, frame->height, buf);
+        (*frame_count)++;
     }
+    if (pkt->data) {
+        pkt->size -= len;
+        pkt->data += len;
+    }
+    return 0;
 }
 
 int main(int argc, char **argv)
 {
     const char *filename, *outfilename;
     const AVCodec *codec;
-    AVCodecParserContext *parser;
     AVCodecContext *c= NULL;
+    int frame_count;
     FILE *f;
     AVFrame *frame;
     uint8_t inbuf[INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
-    uint8_t *data;
-    size_t   data_size;
-    int ret;
-    int eof;
-    AVPacket *pkt;
+    AVPacket avpkt;
 
     if (argc <= 2) {
-        fprintf(stderr, "Usage: %s <input file> <output file>\n"
-                "And check your input file is encoded by mpeg1video please.\n", argv[0]);
+        fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
         exit(0);
     }
     filename    = argv[1];
     outfilename = argv[2];
 
-    pkt = av_packet_alloc();
-    if (!pkt)
-        exit(1);
+    avcodec_register_all();
+
+    av_init_packet(&avpkt);
 
     /* set end of buffer to 0 (this ensures that no overreading happens for damaged MPEG streams) */
     memset(inbuf + INBUF_SIZE, 0, AV_INPUT_BUFFER_PADDING_SIZE);
@@ -118,18 +108,15 @@ int main(int argc, char **argv)
         exit(1);
     }
 
-    parser = av_parser_init(codec->id);
-    if (!parser) {
-        fprintf(stderr, "parser not found\n");
-        exit(1);
-    }
-
     c = avcodec_alloc_context3(codec);
     if (!c) {
         fprintf(stderr, "Could not allocate video codec context\n");
         exit(1);
     }
 
+    if (codec->capabilities & AV_CODEC_CAP_TRUNCATED)
+        c->flags |= AV_CODEC_FLAG_TRUNCATED; // we do not send complete frames
+
     /* For some codecs, such as msmpeg4 and mpeg4, width and height
        MUST be initialized there because this information is not
        available in the bitstream. */
@@ -152,41 +139,44 @@ int main(int argc, char **argv)
         exit(1);
     }
 
-    do {
-        /* read raw data from the input file */
-        data_size = fread(inbuf, 1, INBUF_SIZE, f);
-        if (ferror(f))
+    frame_count = 0;
+    for (;;) {
+        avpkt.size = fread(inbuf, 1, INBUF_SIZE, f);
+        if (avpkt.size == 0)
             break;
-        eof = !data_size;
 
-        /* use the parser to split the data into frames */
-        data = inbuf;
-        while (data_size > 0 || eof) {
-            ret = av_parser_parse2(parser, c, &pkt->data, &pkt->size,
-                                   data, data_size, AV_NOPTS_VALUE, AV_NOPTS_VALUE, 0);
-            if (ret < 0) {
-                fprintf(stderr, "Error while parsing\n");
+        /* NOTE1: some codecs are stream based (mpegvideo, mpegaudio)
+           and this is the only method to use them because you cannot
+           know the compressed data size before analysing it.
+
+           BUT some other codecs (msmpeg4, mpeg4) are inherently frame
+           based, so you must call them with all the data for one
+           frame exactly. You must also initialize 'width' and
+           'height' before initializing them. */
+
+        /* NOTE2: some codecs allow the raw parameters (frame size,
+           sample rate) to be changed at any frame. We handle this, so
+           you should also take care of it */
+
+        /* here, we use a stream based decoder (mpeg1video), so we
+           feed decoder and see if it could decode a frame */
+        avpkt.data = inbuf;
+        while (avpkt.size > 0)
+            if (decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 0) < 0)
                 exit(1);
-            }
-            data      += ret;
-            data_size -= ret;
+    }
 
-            if (pkt->size)
-                decode(c, frame, pkt, outfilename);
-            else if (eof)
-                break;
-        }
-    } while (!eof);
-
-    /* flush the decoder */
-    decode(c, frame, NULL, outfilename);
+    /* Some codecs, such as MPEG, transmit the I- and P-frame with a
+       latency of one frame. You must do the following to have a
+       chance to get the last frame of the video. */
+    avpkt.data = NULL;
+    avpkt.size = 0;
+    decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 1);
 
     fclose(f);
 
-    av_parser_close(parser);
     avcodec_free_context(&c);
     av_frame_free(&frame);
-    av_packet_free(&pkt);
 
     return 0;
 }

doc/examples/demuxing_decoding.c

@@ -21,18 +21,17 @@
  */
 
 /**
- * @file libavformat and libavcodec demuxing and decoding API usage example
- * @example demux_decode.c
+ * @file
+ * Demuxing and decoding example.
  *
- * Show how to use the libavformat and libavcodec API to demux and decode audio
- * and video data. Write the output as raw audio and input files to be played by
- * ffplay.
+ * Show how to use the libavformat and libavcodec API to demux and
+ * decode audio and video data.
+ * @example demuxing_decoding.c
  */
 
 #include <libavutil/imgutils.h>
 #include <libavutil/samplefmt.h>
 #include <libavutil/timestamp.h>
-#include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 
 static AVFormatContext *fmt_ctx = NULL;
@@ -52,97 +51,99 @@ static int video_dst_bufsize;
 
 static int video_stream_idx = -1, audio_stream_idx = -1;
 static AVFrame *frame = NULL;
-static AVPacket *pkt = NULL;
+static AVPacket pkt;
 static int video_frame_count = 0;
 static int audio_frame_count = 0;
 
-static int output_video_frame(AVFrame *frame)
-{
-    if (frame->width != width || frame->height != height ||
-        frame->format != pix_fmt) {
-        /* To handle this change, one could call av_image_alloc again and
-         * decode the following frames into another rawvideo file. */
-        fprintf(stderr, "Error: Width, height and pixel format have to be "
-                "constant in a rawvideo file, but the width, height or "
-                "pixel format of the input video changed:\n"
-                "old: width = %d, height = %d, format = %s\n"
-                "new: width = %d, height = %d, format = %s\n",
-                width, height, av_get_pix_fmt_name(pix_fmt),
-                frame->width, frame->height,
-                av_get_pix_fmt_name(frame->format));
-        return -1;
-    }
+/* Enable or disable frame reference counting. You are not supposed to support
+ * both paths in your application but pick the one most appropriate to your
+ * needs. Look for the use of refcount in this example to see what are the
+ * differences of API usage between them. */
+static int refcount = 0;
 
-    printf("video_frame n:%d\n",
-           video_frame_count++);
-
-    /* copy decoded frame to destination buffer:
-     * this is required since rawvideo expects non aligned data */
-    av_image_copy2(video_dst_data, video_dst_linesize,
-                   frame->data, frame->linesize,
-                   pix_fmt, width, height);
-
-    /* write to rawvideo file */
-    fwrite(video_dst_data[0], 1, video_dst_bufsize, video_dst_file);
-    return 0;
-}
-
-static int output_audio_frame(AVFrame *frame)
-{
-    size_t unpadded_linesize = frame->nb_samples * av_get_bytes_per_sample(frame->format);
-    printf("audio_frame n:%d nb_samples:%d pts:%s\n",
-           audio_frame_count++, frame->nb_samples,
-           av_ts2timestr(frame->pts, &audio_dec_ctx->time_base));
-
-    /* Write the raw audio data samples of the first plane. This works
-     * fine for packed formats (e.g. AV_SAMPLE_FMT_S16). However,
-     * most audio decoders output planar audio, which uses a separate
-     * plane of audio samples for each channel (e.g. AV_SAMPLE_FMT_S16P).
-     * In other words, this code will write only the first audio channel
-     * in these cases.
-     * You should use libswresample or libavfilter to convert the frame
-     * to packed data. */
-    fwrite(frame->extended_data[0], 1, unpadded_linesize, audio_dst_file);
-
-    return 0;
-}
-
-static int decode_packet(AVCodecContext *dec, const AVPacket *pkt)
+static int decode_packet(int *got_frame, int cached)
 {
     int ret = 0;
+    int decoded = pkt.size;
 
-    // submit the packet to the decoder
-    ret = avcodec_send_packet(dec, pkt);
-    if (ret < 0) {
-        fprintf(stderr, "Error submitting a packet for decoding (%s)\n", av_err2str(ret));
-        return ret;
-    }
+    *got_frame = 0;
 
-    // get all the available frames from the decoder
-    while (ret >= 0) {
-        ret = avcodec_receive_frame(dec, frame);
+    if (pkt.stream_index == video_stream_idx) {
+        /* decode video frame */
+        ret = avcodec_decode_video2(video_dec_ctx, frame, got_frame, &pkt);
         if (ret < 0) {
-            // those two return values are special and mean there is no output
-            // frame available, but there were no errors during decoding
-            if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
-                return 0;
-
-            fprintf(stderr, "Error during decoding (%s)\n", av_err2str(ret));
+            fprintf(stderr, "Error decoding video frame (%s)\n", av_err2str(ret));
             return ret;
         }
 
-        // write the frame data to output file
-        if (dec->codec->type == AVMEDIA_TYPE_VIDEO)
-            ret = output_video_frame(frame);
-        else
-            ret = output_audio_frame(frame);
+        if (*got_frame) {
 
-        av_frame_unref(frame);
-        if (ret < 0)
+            if (frame->width != width || frame->height != height ||
+                frame->format != pix_fmt) {
+                /* To handle this change, one could call av_image_alloc again and
+                 * decode the following frames into another rawvideo file. */
+                fprintf(stderr, "Error: Width, height and pixel format have to be "
+                        "constant in a rawvideo file, but the width, height or "
+                        "pixel format of the input video changed:\n"
+                        "old: width = %d, height = %d, format = %s\n"
+                        "new: width = %d, height = %d, format = %s\n",
+                        width, height, av_get_pix_fmt_name(pix_fmt),
+                        frame->width, frame->height,
+                        av_get_pix_fmt_name(frame->format));
+                return -1;
+            }
+
+            printf("video_frame%s n:%d coded_n:%d\n",
+                   cached ? "(cached)" : "",
+                   video_frame_count++, frame->coded_picture_number);
+
+            /* copy decoded frame to destination buffer:
+             * this is required since rawvideo expects non aligned data */
+            av_image_copy(video_dst_data, video_dst_linesize,
+                          (const uint8_t **)(frame->data), frame->linesize,
+                          pix_fmt, width, height);
+
+            /* write to rawvideo file */
+            fwrite(video_dst_data[0], 1, video_dst_bufsize, video_dst_file);
+        }
+    } else if (pkt.stream_index == audio_stream_idx) {
+        /* decode audio frame */
+        ret = avcodec_decode_audio4(audio_dec_ctx, frame, got_frame, &pkt);
+        if (ret < 0) {
+            fprintf(stderr, "Error decoding audio frame (%s)\n", av_err2str(ret));
             return ret;
+        }
+        /* Some audio decoders decode only part of the packet, and have to be
+         * called again with the remainder of the packet data.
+         * Sample: fate-suite/lossless-audio/luckynight-partial.shn
+         * Also, some decoders might over-read the packet. */
+        decoded = FFMIN(ret, pkt.size);
+
+        if (*got_frame) {
+            size_t unpadded_linesize = frame->nb_samples * av_get_bytes_per_sample(frame->format);
+            printf("audio_frame%s n:%d nb_samples:%d pts:%s\n",
+                   cached ? "(cached)" : "",
+                   audio_frame_count++, frame->nb_samples,
+                   av_ts2timestr(frame->pts, &audio_dec_ctx->time_base));
+
+            /* Write the raw audio data samples of the first plane. This works
+             * fine for packed formats (e.g. AV_SAMPLE_FMT_S16). However,
+             * most audio decoders output planar audio, which uses a separate
+             * plane of audio samples for each channel (e.g. AV_SAMPLE_FMT_S16P).
+             * In other words, this code will write only the first audio channel
+             * in these cases.
+             * You should use libswresample or libavfilter to convert the frame
+             * to packed data. */
+            fwrite(frame->extended_data[0], 1, unpadded_linesize, audio_dst_file);
+        }
     }
 
-    return 0;
+    /* If we use frame reference counting, we own the data and need
+     * to de-reference it when we don't use it anymore */
+    if (*got_frame && refcount)
+        av_frame_unref(frame);
+
+    return decoded;
 }
 
 static int open_codec_context(int *stream_idx,
@@ -150,7 +151,8 @@ static int open_codec_context(int *stream_idx,
 {
     int ret, stream_index;
     AVStream *st;
-    const AVCodec *dec = NULL;
+    AVCodec *dec = NULL;
+    AVDictionary *opts = NULL;
 
     ret = av_find_best_stream(fmt_ctx, type, -1, -1, NULL, 0);
     if (ret < 0) {
@@ -184,8 +186,9 @@ static int open_codec_context(int *stream_idx,
             return ret;
         }
 
-        /* Init the decoders */
-        if ((ret = avcodec_open2(*dec_ctx, dec, NULL)) < 0) {
+        /* Init the decoders, with or without reference counting */
+        av_dict_set(&opts, "refcounted_frames", refcount ? "1" : "0", 0);
+        if ((ret = avcodec_open2(*dec_ctx, dec, &opts)) < 0) {
             fprintf(stderr, "Failed to open %s codec\n",
                     av_get_media_type_string(type));
             return ret;
@@ -227,21 +230,31 @@ static int get_format_from_sample_fmt(const char **fmt,
 
 int main (int argc, char **argv)
 {
-    int ret = 0;
+    int ret = 0, got_frame;
 
-    if (argc != 4) {
-        fprintf(stderr, "usage: %s  input_file video_output_file audio_output_file\n"
+    if (argc != 4 && argc != 5) {
+        fprintf(stderr, "usage: %s [-refcount] input_file video_output_file audio_output_file\n"
                 "API example program to show how to read frames from an input file.\n"
                 "This program reads frames from a file, decodes them, and writes decoded\n"
                 "video frames to a rawvideo file named video_output_file, and decoded\n"
-                "audio frames to a rawaudio file named audio_output_file.\n",
-                argv[0]);
+                "audio frames to a rawaudio file named audio_output_file.\n\n"
+                "If the -refcount option is specified, the program use the\n"
+                "reference counting frame system which allows keeping a copy of\n"
+                "the data for longer than one decode call.\n"
+                "\n", argv[0]);
         exit(1);
     }
+    if (argc == 5 && !strcmp(argv[1], "-refcount")) {
+        refcount = 1;
+        argv++;
+    }
     src_filename = argv[1];
     video_dst_filename = argv[2];
     audio_dst_filename = argv[3];
 
+    /* register all formats and codecs */
+    av_register_all();
+
     /* open input file, and allocate format context */
     if (avformat_open_input(&fmt_ctx, src_filename, NULL, NULL) < 0) {
         fprintf(stderr, "Could not open source file %s\n", src_filename);
@@ -303,12 +316,10 @@ int main (int argc, char **argv)
         goto end;
     }
 
-    pkt = av_packet_alloc();
-    if (!pkt) {
-        fprintf(stderr, "Could not allocate packet\n");
-        ret = AVERROR(ENOMEM);
-        goto end;
-    }
+    /* initialize packet, set data to NULL, let the demuxer fill it */
+    av_init_packet(&pkt);
+    pkt.data = NULL;
+    pkt.size = 0;
 
     if (video_stream)
         printf("Demuxing video from file '%s' into '%s'\n", src_filename, video_dst_filename);
@@ -316,23 +327,24 @@ int main (int argc, char **argv)
         printf("Demuxing audio from file '%s' into '%s'\n", src_filename, audio_dst_filename);
 
     /* read frames from the file */
-    while (av_read_frame(fmt_ctx, pkt) >= 0) {
-        // check if the packet belongs to a stream we are interested in, otherwise
-        // skip it
-        if (pkt->stream_index == video_stream_idx)
-            ret = decode_packet(video_dec_ctx, pkt);
-        else if (pkt->stream_index == audio_stream_idx)
-            ret = decode_packet(audio_dec_ctx, pkt);
-        av_packet_unref(pkt);
-        if (ret < 0)
-            break;
+    while (av_read_frame(fmt_ctx, &pkt) >= 0) {
+        AVPacket orig_pkt = pkt;
+        do {
+            ret = decode_packet(&got_frame, 0);
+            if (ret < 0)
+                break;
+            pkt.data += ret;
+            pkt.size -= ret;
+        } while (pkt.size > 0);
+        av_packet_unref(&orig_pkt);
     }
 
-    /* flush the decoders */
-    if (video_dec_ctx)
-        decode_packet(video_dec_ctx, NULL);
-    if (audio_dec_ctx)
-        decode_packet(audio_dec_ctx, NULL);
+    /* flush cached frames */
+    pkt.data = NULL;
+    pkt.size = 0;
+    do {
+        decode_packet(&got_frame, 1);
+    } while (got_frame);
 
     printf("Demuxing succeeded.\n");
 
@@ -345,7 +357,7 @@ int main (int argc, char **argv)
 
     if (audio_stream) {
         enum AVSampleFormat sfmt = audio_dec_ctx->sample_fmt;
-        int n_channels = audio_dec_ctx->ch_layout.nb_channels;
+        int n_channels = audio_dec_ctx->channels;
         const char *fmt;
 
         if (av_sample_fmt_is_planar(sfmt)) {
@@ -374,7 +386,6 @@ end:
         fclose(video_dst_file);
     if (audio_dst_file)
         fclose(audio_dst_file);
-    av_packet_free(&pkt);
     av_frame_free(&frame);
     av_free(video_dst_data[0]);
 

doc/examples/encode_audio.c

@@ -21,10 +21,10 @@
  */
 
 /**
- * @file libavcodec encoding audio API usage examples
- * @example encode_audio.c
+ * @file
+ * audio encoding with libavcodec API example.
  *
- * Generate a synthetic audio signal and encode it to an output MP2 file.
+ * @example encode_audio.c
  */
 
 #include <stdint.h>
@@ -70,53 +70,26 @@ static int select_sample_rate(const AVCodec *codec)
 }
 
 /* select layout with the highest channel count */
-static int select_channel_layout(const AVCodec *codec, AVChannelLayout *dst)
+static int select_channel_layout(const AVCodec *codec)
 {
-    const AVChannelLayout *p, *best_ch_layout;
+    const uint64_t *p;
+    uint64_t best_ch_layout = 0;
     int best_nb_channels   = 0;
 
-    if (!codec->ch_layouts)
-        return av_channel_layout_copy(dst, &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO);
+    if (!codec->channel_layouts)
+        return AV_CH_LAYOUT_STEREO;
 
-    p = codec->ch_layouts;
-    while (p->nb_channels) {
-        int nb_channels = p->nb_channels;
+    p = codec->channel_layouts;
+    while (*p) {
+        int nb_channels = av_get_channel_layout_nb_channels(*p);
 
         if (nb_channels > best_nb_channels) {
-            best_ch_layout   = p;
+            best_ch_layout    = *p;
             best_nb_channels = nb_channels;
         }
         p++;
     }
-    return av_channel_layout_copy(dst, best_ch_layout);
-}
-
-static void encode(AVCodecContext *ctx, AVFrame *frame, AVPacket *pkt,
-                   FILE *output)
-{
-    int ret;
-
-    /* send the frame for encoding */
-    ret = avcodec_send_frame(ctx, frame);
-    if (ret < 0) {
-        fprintf(stderr, "Error sending the frame to the encoder\n");
-        exit(1);
-    }
-
-    /* read all the available output packets (in general there may be any
-     * number of them */
-    while (ret >= 0) {
-        ret = avcodec_receive_packet(ctx, pkt);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
-            return;
-        else if (ret < 0) {
-            fprintf(stderr, "Error encoding audio frame\n");
-            exit(1);
-        }
-
-        fwrite(pkt->data, 1, pkt->size, output);
-        av_packet_unref(pkt);
-    }
+    return best_ch_layout;
 }
 
 int main(int argc, char **argv)
@@ -125,8 +98,8 @@ int main(int argc, char **argv)
     const AVCodec *codec;
     AVCodecContext *c= NULL;
     AVFrame *frame;
-    AVPacket *pkt;
-    int i, j, k, ret;
+    AVPacket pkt;
+    int i, j, k, ret, got_output;
     FILE *f;
     uint16_t *samples;
     float t, tincr;
@@ -137,6 +110,9 @@ int main(int argc, char **argv)
     }
     filename = argv[1];
 
+    /* register all the codecs */
+    avcodec_register_all();
+
     /* find the MP2 encoder */
     codec = avcodec_find_encoder(AV_CODEC_ID_MP2);
     if (!codec) {
@@ -163,9 +139,8 @@ int main(int argc, char **argv)
 
     /* select other audio parameters supported by the encoder */
     c->sample_rate    = select_sample_rate(codec);
-    ret = select_channel_layout(codec, &c->ch_layout);
-    if (ret < 0)
-        exit(1);
+    c->channel_layout = select_channel_layout(codec);
+    c->channels       = av_get_channel_layout_nb_channels(c->channel_layout);
 
     /* open it */
     if (avcodec_open2(c, codec, NULL) < 0) {
@@ -179,13 +154,6 @@ int main(int argc, char **argv)
         exit(1);
     }
 
-    /* packet for holding encoded output */
-    pkt = av_packet_alloc();
-    if (!pkt) {
-        fprintf(stderr, "could not allocate the packet\n");
-        exit(1);
-    }
-
     /* frame containing input raw audio */
     frame = av_frame_alloc();
     if (!frame) {
@@ -195,9 +163,7 @@ int main(int argc, char **argv)
 
     frame->nb_samples     = c->frame_size;
     frame->format         = c->sample_fmt;
-    ret = av_channel_layout_copy(&frame->ch_layout, &c->ch_layout);
-    if (ret < 0)
-        exit(1);
+    frame->channel_layout = c->channel_layout;
 
     /* allocate the data buffers */
     ret = av_frame_get_buffer(frame, 0);
@@ -210,6 +176,10 @@ int main(int argc, char **argv)
     t = 0;
     tincr = 2 * M_PI * 440.0 / c->sample_rate;
     for (i = 0; i < 200; i++) {
+        av_init_packet(&pkt);
+        pkt.data = NULL; // packet data will be allocated by the encoder
+        pkt.size = 0;
+
         /* make sure the frame is writable -- makes a copy if the encoder
          * kept a reference internally */
         ret = av_frame_make_writable(frame);
@@ -220,20 +190,38 @@ int main(int argc, char **argv)
         for (j = 0; j < c->frame_size; j++) {
             samples[2*j] = (int)(sin(t) * 10000);
 
-            for (k = 1; k < c->ch_layout.nb_channels; k++)
+            for (k = 1; k < c->channels; k++)
                 samples[2*j + k] = samples[2*j];
             t += tincr;
         }
-        encode(c, frame, pkt, f);
+        /* encode the samples */
+        ret = avcodec_encode_audio2(c, &pkt, frame, &got_output);
+        if (ret < 0) {
+            fprintf(stderr, "Error encoding audio frame\n");
+            exit(1);
+        }
+        if (got_output) {
+            fwrite(pkt.data, 1, pkt.size, f);
+            av_packet_unref(&pkt);
+        }
     }
 
-    /* flush the encoder */
-    encode(c, NULL, pkt, f);
+    /* get the delayed frames */
+    for (got_output = 1; got_output; i++) {
+        ret = avcodec_encode_audio2(c, &pkt, NULL, &got_output);
+        if (ret < 0) {
+            fprintf(stderr, "Error encoding frame\n");
+            exit(1);
+        }
 
+        if (got_output) {
+            fwrite(pkt.data, 1, pkt.size, f);
+            av_packet_unref(&pkt);
+        }
+    }
     fclose(f);
 
     av_frame_free(&frame);
-    av_packet_free(&pkt);
     avcodec_free_context(&c);
 
     return 0;

doc/examples/encode_video.c

@@ -21,10 +21,10 @@
  */
 
 /**
- * @file libavcodec encoding video API usage example
- * @example encode_video.c
+ * @file
+ * video encoding with libavcodec API example
  *
- * Generate synthetic video data and encode it to an output file.
+ * @example encode_video.c
  */
 
 #include <stdio.h>
@@ -36,45 +36,15 @@
 #include <libavutil/opt.h>
 #include <libavutil/imgutils.h>
 
-static void encode(AVCodecContext *enc_ctx, AVFrame *frame, AVPacket *pkt,
-                   FILE *outfile)
-{
-    int ret;
-
-    /* send the frame to the encoder */
-    if (frame)
-        printf("Send frame %3"PRId64"\n", frame->pts);
-
-    ret = avcodec_send_frame(enc_ctx, frame);
-    if (ret < 0) {
-        fprintf(stderr, "Error sending a frame for encoding\n");
-        exit(1);
-    }
-
-    while (ret >= 0) {
-        ret = avcodec_receive_packet(enc_ctx, pkt);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
-            return;
-        else if (ret < 0) {
-            fprintf(stderr, "Error during encoding\n");
-            exit(1);
-        }
-
-        printf("Write packet %3"PRId64" (size=%5d)\n", pkt->pts, pkt->size);
-        fwrite(pkt->data, 1, pkt->size, outfile);
-        av_packet_unref(pkt);
-    }
-}
-
 int main(int argc, char **argv)
 {
     const char *filename, *codec_name;
     const AVCodec *codec;
     AVCodecContext *c= NULL;
-    int i, ret, x, y;
+    int i, ret, x, y, got_output;
     FILE *f;
     AVFrame *frame;
-    AVPacket *pkt;
+    AVPacket pkt;
     uint8_t endcode[] = { 0, 0, 1, 0xb7 };
 
     if (argc <= 2) {
@@ -84,10 +54,12 @@ int main(int argc, char **argv)
     filename = argv[1];
     codec_name = argv[2];
 
+    avcodec_register_all();
+
     /* find the mpeg1video encoder */
     codec = avcodec_find_encoder_by_name(codec_name);
     if (!codec) {
-        fprintf(stderr, "Codec '%s' not found\n", codec_name);
+        fprintf(stderr, "Codec not found\n");
         exit(1);
     }
 
@@ -97,10 +69,6 @@ int main(int argc, char **argv)
         exit(1);
     }
 
-    pkt = av_packet_alloc();
-    if (!pkt)
-        exit(1);
-
     /* put sample parameters */
     c->bit_rate = 400000;
     /* resolution must be a multiple of two */
@@ -124,9 +92,8 @@ int main(int argc, char **argv)
         av_opt_set(c->priv_data, "preset", "slow", 0);
 
     /* open it */
-    ret = avcodec_open2(c, codec, NULL);
-    if (ret < 0) {
-        fprintf(stderr, "Could not open codec: %s\n", av_err2str(ret));
+    if (avcodec_open2(c, codec, NULL) < 0) {
+        fprintf(stderr, "Could not open codec\n");
         exit(1);
     }
 
@@ -145,7 +112,7 @@ int main(int argc, char **argv)
     frame->width  = c->width;
     frame->height = c->height;
 
-    ret = av_frame_get_buffer(frame, 0);
+    ret = av_frame_get_buffer(frame, 32);
     if (ret < 0) {
         fprintf(stderr, "Could not allocate the video frame data\n");
         exit(1);
@@ -153,27 +120,18 @@ int main(int argc, char **argv)
 
     /* encode 1 second of video */
     for (i = 0; i < 25; i++) {
+        av_init_packet(&pkt);
+        pkt.data = NULL;    // packet data will be allocated by the encoder
+        pkt.size = 0;
+
         fflush(stdout);
 
-        /* Make sure the frame data is writable.
-           On the first round, the frame is fresh from av_frame_get_buffer()
-           and therefore we know it is writable.
-           But on the next rounds, encode() will have called
-           avcodec_send_frame(), and the codec may have kept a reference to
-           the frame in its internal structures, that makes the frame
-           unwritable.
-           av_frame_make_writable() checks that and allocates a new buffer
-           for the frame only if necessary.
-         */
+        /* make sure the frame data is writable */
         ret = av_frame_make_writable(frame);
         if (ret < 0)
             exit(1);
 
-        /* Prepare a dummy image.
-           In real code, this is where you would have your own logic for
-           filling the frame. FFmpeg does not care what you put in the
-           frame.
-         */
+        /* prepare a dummy image */
         /* Y */
         for (y = 0; y < c->height; y++) {
             for (x = 0; x < c->width; x++) {
@@ -192,25 +150,42 @@ int main(int argc, char **argv)
         frame->pts = i;
 
         /* encode the image */
-        encode(c, frame, pkt, f);
+        ret = avcodec_encode_video2(c, &pkt, frame, &got_output);
+        if (ret < 0) {
+            fprintf(stderr, "Error encoding frame\n");
+            exit(1);
+        }
+
+        if (got_output) {
+            printf("Write frame %3d (size=%5d)\n", i, pkt.size);
+            fwrite(pkt.data, 1, pkt.size, f);
+            av_packet_unref(&pkt);
+        }
     }
 
-    /* flush the encoder */
-    encode(c, NULL, pkt, f);
+    /* get the delayed frames */
+    for (got_output = 1; got_output; i++) {
+        fflush(stdout);
 
-    /* Add sequence end code to have a real MPEG file.
-       It makes only sense because this tiny examples writes packets
-       directly. This is called "elementary stream" and only works for some
-       codecs. To create a valid file, you usually need to write packets
-       into a proper file format or protocol; see mux.c.
-     */
-    if (codec->id == AV_CODEC_ID_MPEG1VIDEO || codec->id == AV_CODEC_ID_MPEG2VIDEO)
-        fwrite(endcode, 1, sizeof(endcode), f);
+        ret = avcodec_encode_video2(c, &pkt, NULL, &got_output);
+        if (ret < 0) {
+            fprintf(stderr, "Error encoding frame\n");
+            exit(1);
+        }
+
+        if (got_output) {
+            printf("Write frame %3d (size=%5d)\n", i, pkt.size);
+            fwrite(pkt.data, 1, pkt.size, f);
+            av_packet_unref(&pkt);
+        }
+    }
+
+    /* add sequence end code to have a real MPEG file */
+    fwrite(endcode, 1, sizeof(endcode), f);
     fclose(f);
 
     avcodec_free_context(&c);
     av_frame_free(&frame);
-    av_packet_free(&pkt);
 
     return 0;
 }

doc/examples/extract_mvs.c

@@ -21,16 +21,7 @@
  * THE SOFTWARE.
  */
 
-/**
- * @file libavcodec motion vectors extraction API usage example
- * @example extract_mvs.c
- *
- * Read from input file, decode video stream and print a motion vectors
- * representation to stdout.
- */
-
 #include <libavutil/motion_vector.h>
-#include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 
 static AVFormatContext *fmt_ctx = NULL;
@@ -40,26 +31,23 @@ static const char *src_filename = NULL;
 
 static int video_stream_idx = -1;
 static AVFrame *frame = NULL;
+static AVPacket pkt;
 static int video_frame_count = 0;
 
-static int decode_packet(const AVPacket *pkt)
+static int decode_packet(int *got_frame, int cached)
 {
-    int ret = avcodec_send_packet(video_dec_ctx, pkt);
-    if (ret < 0) {
-        fprintf(stderr, "Error while sending a packet to the decoder: %s\n", av_err2str(ret));
-        return ret;
-    }
+    int decoded = pkt.size;
 
-    while (ret >= 0)  {
-        ret = avcodec_receive_frame(video_dec_ctx, frame);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
-            break;
-        } else if (ret < 0) {
-            fprintf(stderr, "Error while receiving a frame from the decoder: %s\n", av_err2str(ret));
+    *got_frame = 0;
+
+    if (pkt.stream_index == video_stream_idx) {
+        int ret = avcodec_decode_video2(video_dec_ctx, frame, got_frame, &pkt);
+        if (ret < 0) {
+            fprintf(stderr, "Error decoding video frame (%s)\n", av_err2str(ret));
             return ret;
         }
 
-        if (ret >= 0) {
+        if (*got_frame) {
             int i;
             AVFrameSideData *sd;
 
@@ -69,18 +57,16 @@ static int decode_packet(const AVPacket *pkt)
                 const AVMotionVector *mvs = (const AVMotionVector *)sd->data;
                 for (i = 0; i < sd->size / sizeof(*mvs); i++) {
                     const AVMotionVector *mv = &mvs[i];
-                    printf("%d,%2d,%2d,%2d,%4d,%4d,%4d,%4d,0x%"PRIx64",%4d,%4d,%4d\n",
-                        video_frame_count, mv->source,
-                        mv->w, mv->h, mv->src_x, mv->src_y,
-                        mv->dst_x, mv->dst_y, mv->flags,
-                        mv->motion_x, mv->motion_y, mv->motion_scale);
+                    printf("%d,%2d,%2d,%2d,%4d,%4d,%4d,%4d,0x%"PRIx64"\n",
+                           video_frame_count, mv->source,
+                           mv->w, mv->h, mv->src_x, mv->src_y,
+                           mv->dst_x, mv->dst_y, mv->flags);
                 }
             }
-            av_frame_unref(frame);
         }
     }
 
-    return 0;
+    return decoded;
 }
 
 static int open_codec_context(AVFormatContext *fmt_ctx, enum AVMediaType type)
@@ -88,7 +74,7 @@ static int open_codec_context(AVFormatContext *fmt_ctx, enum AVMediaType type)
     int ret;
     AVStream *st;
     AVCodecContext *dec_ctx = NULL;
-    const AVCodec *dec = NULL;
+    AVCodec *dec = NULL;
     AVDictionary *opts = NULL;
 
     ret = av_find_best_stream(fmt_ctx, type, -1, -1, &dec, 0);
@@ -114,9 +100,7 @@ static int open_codec_context(AVFormatContext *fmt_ctx, enum AVMediaType type)
 
         /* Init the video decoder */
         av_dict_set(&opts, "flags2", "+export_mvs", 0);
-        ret = avcodec_open2(dec_ctx, dec, &opts);
-        av_dict_free(&opts);
-        if (ret < 0) {
+        if ((ret = avcodec_open2(dec_ctx, dec, &opts)) < 0) {
             fprintf(stderr, "Failed to open %s codec\n",
                     av_get_media_type_string(type));
             return ret;
@@ -132,8 +116,7 @@ static int open_codec_context(AVFormatContext *fmt_ctx, enum AVMediaType type)
 
 int main(int argc, char **argv)
 {
-    int ret = 0;
-    AVPacket *pkt = NULL;
+    int ret = 0, got_frame;
 
     if (argc != 2) {
         fprintf(stderr, "Usage: %s <video>\n", argv[0]);
@@ -141,6 +124,8 @@ int main(int argc, char **argv)
     }
     src_filename = argv[1];
 
+    av_register_all();
+
     if (avformat_open_input(&fmt_ctx, src_filename, NULL, NULL) < 0) {
         fprintf(stderr, "Could not open source file %s\n", src_filename);
         exit(1);
@@ -168,31 +153,36 @@ int main(int argc, char **argv)
         goto end;
     }
 
-    pkt = av_packet_alloc();
-    if (!pkt) {
-        fprintf(stderr, "Could not allocate AVPacket\n");
-        ret = AVERROR(ENOMEM);
-        goto end;
-    }
+    printf("framenum,source,blockw,blockh,srcx,srcy,dstx,dsty,flags\n");
 
-    printf("framenum,source,blockw,blockh,srcx,srcy,dstx,dsty,flags,motion_x,motion_y,motion_scale\n");
+    /* initialize packet, set data to NULL, let the demuxer fill it */
+    av_init_packet(&pkt);
+    pkt.data = NULL;
+    pkt.size = 0;
 
     /* read frames from the file */
-    while (av_read_frame(fmt_ctx, pkt) >= 0) {
-        if (pkt->stream_index == video_stream_idx)
-            ret = decode_packet(pkt);
-        av_packet_unref(pkt);
-        if (ret < 0)
-            break;
+    while (av_read_frame(fmt_ctx, &pkt) >= 0) {
+        AVPacket orig_pkt = pkt;
+        do {
+            ret = decode_packet(&got_frame, 0);
+            if (ret < 0)
+                break;
+            pkt.data += ret;
+            pkt.size -= ret;
+        } while (pkt.size > 0);
+        av_packet_unref(&orig_pkt);
     }
 
     /* flush cached frames */
-    decode_packet(NULL);
+    pkt.data = NULL;
+    pkt.size = 0;
+    do {
+        decode_packet(&got_frame, 1);
+    } while (got_frame);
 
 end:
     avcodec_free_context(&video_dec_ctx);
     avformat_close_input(&fmt_ctx);
     av_frame_free(&frame);
-    av_packet_free(&pkt);
     return ret < 0;
 }

doc/examples/filter_audio.c

@@ -19,11 +19,13 @@
  */
 
 /**
- * @file libavfilter audio filtering API usage example
- * @example filter_audio.c
+ * @file
+ * libavfilter API usage example.
  *
- * This example will generate a sine wave audio, pass it through a simple filter
- * chain, and then compute the MD5 checksum of the output data.
+ * @example filter_audio.c
+ * This example will generate a sine wave audio,
+ * pass it through a simple filter chain, and then compute the MD5 checksum of
+ * the output data.
  *
  * The filter chain it uses is:
  * (input) -> abuffer -> volume -> aformat -> abuffersink -> (output)
@@ -53,7 +55,7 @@
 
 #define INPUT_SAMPLERATE     48000
 #define INPUT_FORMAT         AV_SAMPLE_FMT_FLTP
-#define INPUT_CHANNEL_LAYOUT (AVChannelLayout)AV_CHANNEL_LAYOUT_5POINT0
+#define INPUT_CHANNEL_LAYOUT AV_CH_LAYOUT_5POINT0
 
 #define VOLUME_VAL 0.90
 
@@ -62,13 +64,13 @@ static int init_filter_graph(AVFilterGraph **graph, AVFilterContext **src,
 {
     AVFilterGraph *filter_graph;
     AVFilterContext *abuffer_ctx;
-    const AVFilter  *abuffer;
+    AVFilter        *abuffer;
     AVFilterContext *volume_ctx;
-    const AVFilter  *volume;
+    AVFilter        *volume;
     AVFilterContext *aformat_ctx;
-    const AVFilter  *aformat;
+    AVFilter        *aformat;
     AVFilterContext *abuffersink_ctx;
-    const AVFilter  *abuffersink;
+    AVFilter        *abuffersink;
 
     AVDictionary *options_dict = NULL;
     uint8_t options_str[1024];
@@ -98,7 +100,7 @@ static int init_filter_graph(AVFilterGraph **graph, AVFilterContext **src,
     }
 
     /* Set the filter options through the AVOptions API. */
-    av_channel_layout_describe(&INPUT_CHANNEL_LAYOUT, ch_layout, sizeof(ch_layout));
+    av_get_channel_layout_string(ch_layout, sizeof(ch_layout), 0, INPUT_CHANNEL_LAYOUT);
     av_opt_set    (abuffer_ctx, "channel_layout", ch_layout,                            AV_OPT_SEARCH_CHILDREN);
     av_opt_set    (abuffer_ctx, "sample_fmt",     av_get_sample_fmt_name(INPUT_FORMAT), AV_OPT_SEARCH_CHILDREN);
     av_opt_set_q  (abuffer_ctx, "time_base",      (AVRational){ 1, INPUT_SAMPLERATE },  AV_OPT_SEARCH_CHILDREN);
@@ -152,8 +154,9 @@ static int init_filter_graph(AVFilterGraph **graph, AVFilterContext **src,
     /* A third way of passing the options is in a string of the form
      * key1=value1:key2=value2.... */
     snprintf(options_str, sizeof(options_str),
-             "sample_fmts=%s:sample_rates=%d:channel_layouts=stereo",
-             av_get_sample_fmt_name(AV_SAMPLE_FMT_S16), 44100);
+             "sample_fmts=%s:sample_rates=%d:channel_layouts=0x%"PRIx64,
+             av_get_sample_fmt_name(AV_SAMPLE_FMT_S16), 44100,
+             (uint64_t)AV_CH_LAYOUT_STEREO);
     err = avfilter_init_str(aformat_ctx, options_str);
     if (err < 0) {
         av_log(NULL, AV_LOG_ERROR, "Could not initialize the aformat filter.\n");
@@ -212,7 +215,7 @@ static int init_filter_graph(AVFilterGraph **graph, AVFilterContext **src,
 static int process_output(struct AVMD5 *md5, AVFrame *frame)
 {
     int planar     = av_sample_fmt_is_planar(frame->format);
-    int channels   = frame->ch_layout.nb_channels;
+    int channels   = av_get_channel_layout_nb_channels(frame->channel_layout);
     int planes     = planar ? channels : 1;
     int bps        = av_get_bytes_per_sample(frame->format);
     int plane_size = bps * frame->nb_samples * (planar ? 1 : channels);
@@ -245,7 +248,7 @@ static int get_input(AVFrame *frame, int frame_num)
     /* Set up the frame properties and allocate the buffer for the data. */
     frame->sample_rate    = INPUT_SAMPLERATE;
     frame->format         = INPUT_FORMAT;
-    av_channel_layout_copy(&frame->ch_layout, &INPUT_CHANNEL_LAYOUT);
+    frame->channel_layout = INPUT_CHANNEL_LAYOUT;
     frame->nb_samples     = FRAME_SIZE;
     frame->pts            = frame_num * FRAME_SIZE;
 
@@ -286,6 +289,8 @@ int main(int argc, char *argv[])
         return 1;
     }
 
+    avfilter_register_all();
+
     /* Allocate the frame we will be using to store the data. */
     frame  = av_frame_alloc();
     if (!frame) {

doc/examples/filtering_audio.c

@@ -23,20 +23,18 @@
  */
 
 /**
- * @file audio decoding and filtering usage example
- * @example decode_filter_audio.c
- *
- * Demux, decode and filter audio input file, generate a raw audio
- * file to be played with ffplay.
+ * @file
+ * API example for audio decoding and filtering
+ * @example filtering_audio.c
  */
 
 #include <unistd.h>
 
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
+#include <libavfilter/avfiltergraph.h>
 #include <libavfilter/buffersink.h>
 #include <libavfilter/buffersrc.h>
-#include <libavutil/channel_layout.h>
 #include <libavutil/opt.h>
 
 static const char *filter_descr = "aresample=8000,aformat=sample_fmts=s16:channel_layouts=mono";
@@ -51,8 +49,8 @@ static int audio_stream_index = -1;
 
 static int open_input_file(const char *filename)
 {
-    const AVCodec *dec;
     int ret;
+    AVCodec *dec;
 
     if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) {
         av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n");
@@ -77,6 +75,7 @@ static int open_input_file(const char *filename)
     if (!dec_ctx)
         return AVERROR(ENOMEM);
     avcodec_parameters_to_context(dec_ctx, fmt_ctx->streams[audio_stream_index]->codecpar);
+    av_opt_set_int(dec_ctx, "refcounted_frames", 1, 0);
 
     /* init the audio decoder */
     if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
@@ -91,11 +90,12 @@ static int init_filters(const char *filters_descr)
 {
     char args[512];
     int ret = 0;
-    const AVFilter *abuffersrc  = avfilter_get_by_name("abuffer");
-    const AVFilter *abuffersink = avfilter_get_by_name("abuffersink");
+    AVFilter *abuffersrc  = avfilter_get_by_name("abuffer");
+    AVFilter *abuffersink = avfilter_get_by_name("abuffersink");
     AVFilterInOut *outputs = avfilter_inout_alloc();
     AVFilterInOut *inputs  = avfilter_inout_alloc();
     static const enum AVSampleFormat out_sample_fmts[] = { AV_SAMPLE_FMT_S16, -1 };
+    static const int64_t out_channel_layouts[] = { AV_CH_LAYOUT_MONO, -1 };
     static const int out_sample_rates[] = { 8000, -1 };
     const AVFilterLink *outlink;
     AVRational time_base = fmt_ctx->streams[audio_stream_index]->time_base;
@@ -107,13 +107,12 @@ static int init_filters(const char *filters_descr)
     }
 
     /* buffer audio source: the decoded frames from the decoder will be inserted here. */
-    if (dec_ctx->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC)
-        av_channel_layout_default(&dec_ctx->ch_layout, dec_ctx->ch_layout.nb_channels);
-    ret = snprintf(args, sizeof(args),
-            "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=",
+    if (!dec_ctx->channel_layout)
+        dec_ctx->channel_layout = av_get_default_channel_layout(dec_ctx->channels);
+    snprintf(args, sizeof(args),
+            "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%"PRIx64,
              time_base.num, time_base.den, dec_ctx->sample_rate,
-             av_get_sample_fmt_name(dec_ctx->sample_fmt));
-    av_channel_layout_describe(&dec_ctx->ch_layout, args + ret, sizeof(args) - ret);
+             av_get_sample_fmt_name(dec_ctx->sample_fmt), dec_ctx->channel_layout);
     ret = avfilter_graph_create_filter(&buffersrc_ctx, abuffersrc, "in",
                                        args, NULL, filter_graph);
     if (ret < 0) {
@@ -136,7 +135,7 @@ static int init_filters(const char *filters_descr)
         goto end;
     }
 
-    ret = av_opt_set(buffersink_ctx, "ch_layouts", "mono",
+    ret = av_opt_set_int_list(buffersink_ctx, "channel_layouts", out_channel_layouts, -1,
                               AV_OPT_SEARCH_CHILDREN);
     if (ret < 0) {
         av_log(NULL, AV_LOG_ERROR, "Cannot set output channel layout\n");
@@ -187,7 +186,7 @@ static int init_filters(const char *filters_descr)
     /* Print summary of the sink buffer
      * Note: args buffer is reused to store channel layout string */
     outlink = buffersink_ctx->inputs[0];
-    av_channel_layout_describe(&outlink->ch_layout, args, sizeof(args));
+    av_get_channel_layout_string(args, sizeof(args), -1, outlink->channel_layout);
     av_log(NULL, AV_LOG_INFO, "Output: srate:%dHz fmt:%s chlayout:%s\n",
            (int)outlink->sample_rate,
            (char *)av_x_if_null(av_get_sample_fmt_name(outlink->format), "?"),
@@ -202,7 +201,7 @@ end:
 
 static void print_frame(const AVFrame *frame)
 {
-    const int n = frame->nb_samples * frame->ch_layout.nb_channels;
+    const int n = frame->nb_samples * av_get_channel_layout_nb_channels(av_frame_get_channel_layout(frame));
     const uint16_t *p     = (uint16_t*)frame->data[0];
     const uint16_t *p_end = p + n;
 
@@ -217,12 +216,12 @@ static void print_frame(const AVFrame *frame)
 int main(int argc, char **argv)
 {
     int ret;
-    AVPacket *packet = av_packet_alloc();
+    AVPacket packet;
     AVFrame *frame = av_frame_alloc();
     AVFrame *filt_frame = av_frame_alloc();
 
-    if (!packet || !frame || !filt_frame) {
-        fprintf(stderr, "Could not allocate frame or packet\n");
+    if (!frame || !filt_frame) {
+        perror("Could not allocate frame");
         exit(1);
     }
     if (argc != 2) {
@@ -230,6 +229,9 @@ int main(int argc, char **argv)
         exit(1);
     }
 
+    av_register_all();
+    avfilter_register_all();
+
     if ((ret = open_input_file(argv[1])) < 0)
         goto end;
     if ((ret = init_filters(filter_descr)) < 0)
@@ -237,11 +239,11 @@ int main(int argc, char **argv)
 
     /* read all packets */
     while (1) {
-        if ((ret = av_read_frame(fmt_ctx, packet)) < 0)
+        if ((ret = av_read_frame(fmt_ctx, &packet)) < 0)
             break;
 
-        if (packet->stream_index == audio_stream_index) {
-            ret = avcodec_send_packet(dec_ctx, packet);
+        if (packet.stream_index == audio_stream_index) {
+            ret = avcodec_send_packet(dec_ctx, &packet);
             if (ret < 0) {
                 av_log(NULL, AV_LOG_ERROR, "Error while sending a packet to the decoder\n");
                 break;
@@ -277,13 +279,12 @@ int main(int argc, char **argv)
                 }
             }
         }
-        av_packet_unref(packet);
+        av_packet_unref(&packet);
     }
 end:
     avfilter_graph_free(&filter_graph);
     avcodec_free_context(&dec_ctx);
     avformat_close_input(&fmt_ctx);
-    av_packet_free(&packet);
     av_frame_free(&frame);
     av_frame_free(&filt_frame);
 

doc/examples/filtering_video.c

@@ -24,16 +24,15 @@
 /**
  * @file
  * API example for decoding and filtering
- * @example decode_filter_video.c
+ * @example filtering_video.c
  */
 
 #define _XOPEN_SOURCE 600 /* for usleep */
 #include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
 
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
+#include <libavfilter/avfiltergraph.h>
 #include <libavfilter/buffersink.h>
 #include <libavfilter/buffersrc.h>
 #include <libavutil/opt.h>
@@ -53,8 +52,8 @@ static int64_t last_pts = AV_NOPTS_VALUE;
 
 static int open_input_file(const char *filename)
 {
-    const AVCodec *dec;
     int ret;
+    AVCodec *dec;
 
     if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) {
         av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n");
@@ -79,6 +78,7 @@ static int open_input_file(const char *filename)
     if (!dec_ctx)
         return AVERROR(ENOMEM);
     avcodec_parameters_to_context(dec_ctx, fmt_ctx->streams[video_stream_index]->codecpar);
+    av_opt_set_int(dec_ctx, "refcounted_frames", 1, 0);
 
     /* init the video decoder */
     if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
@@ -93,8 +93,8 @@ static int init_filters(const char *filters_descr)
 {
     char args[512];
     int ret = 0;
-    const AVFilter *buffersrc  = avfilter_get_by_name("buffer");
-    const AVFilter *buffersink = avfilter_get_by_name("buffersink");
+    AVFilter *buffersrc  = avfilter_get_by_name("buffer");
+    AVFilter *buffersink = avfilter_get_by_name("buffersink");
     AVFilterInOut *outputs = avfilter_inout_alloc();
     AVFilterInOut *inputs  = avfilter_inout_alloc();
     AVRational time_base = fmt_ctx->streams[video_stream_index]->time_base;
@@ -210,22 +210,21 @@ static void display_frame(const AVFrame *frame, AVRational time_base)
 int main(int argc, char **argv)
 {
     int ret;
-    AVPacket *packet;
-    AVFrame *frame;
-    AVFrame *filt_frame;
+    AVPacket packet;
+    AVFrame *frame = av_frame_alloc();
+    AVFrame *filt_frame = av_frame_alloc();
 
+    if (!frame || !filt_frame) {
+        perror("Could not allocate frame");
+        exit(1);
+    }
     if (argc != 2) {
         fprintf(stderr, "Usage: %s file\n", argv[0]);
         exit(1);
     }
 
-    frame = av_frame_alloc();
-    filt_frame = av_frame_alloc();
-    packet = av_packet_alloc();
-    if (!frame || !filt_frame || !packet) {
-        fprintf(stderr, "Could not allocate frame or packet\n");
-        exit(1);
-    }
+    av_register_all();
+    avfilter_register_all();
 
     if ((ret = open_input_file(argv[1])) < 0)
         goto end;
@@ -234,11 +233,11 @@ int main(int argc, char **argv)
 
     /* read all packets */
     while (1) {
-        if ((ret = av_read_frame(fmt_ctx, packet)) < 0)
+        if ((ret = av_read_frame(fmt_ctx, &packet)) < 0)
             break;
 
-        if (packet->stream_index == video_stream_index) {
-            ret = avcodec_send_packet(dec_ctx, packet);
+        if (packet.stream_index == video_stream_index) {
+            ret = avcodec_send_packet(dec_ctx, &packet);
             if (ret < 0) {
                 av_log(NULL, AV_LOG_ERROR, "Error while sending a packet to the decoder\n");
                 break;
@@ -253,28 +252,30 @@ int main(int argc, char **argv)
                     goto end;
                 }
 
-                frame->pts = frame->best_effort_timestamp;
+                if (ret >= 0) {
+                    frame->pts = av_frame_get_best_effort_timestamp(frame);
 
-                /* push the decoded frame into the filtergraph */
-                if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, AV_BUFFERSRC_FLAG_KEEP_REF) < 0) {
-                    av_log(NULL, AV_LOG_ERROR, "Error while feeding the filtergraph\n");
-                    break;
-                }
-
-                /* pull filtered frames from the filtergraph */
-                while (1) {
-                    ret = av_buffersink_get_frame(buffersink_ctx, filt_frame);
-                    if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
+                    /* push the decoded frame into the filtergraph */
+                    if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, AV_BUFFERSRC_FLAG_KEEP_REF) < 0) {
+                        av_log(NULL, AV_LOG_ERROR, "Error while feeding the filtergraph\n");
                         break;
-                    if (ret < 0)
-                        goto end;
-                    display_frame(filt_frame, buffersink_ctx->inputs[0]->time_base);
-                    av_frame_unref(filt_frame);
+                    }
+
+                    /* pull filtered frames from the filtergraph */
+                    while (1) {
+                        ret = av_buffersink_get_frame(buffersink_ctx, filt_frame);
+                        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
+                            break;
+                        if (ret < 0)
+                            goto end;
+                        display_frame(filt_frame, buffersink_ctx->inputs[0]->time_base);
+                        av_frame_unref(filt_frame);
+                    }
+                    av_frame_unref(frame);
                 }
-                av_frame_unref(frame);
             }
         }
-        av_packet_unref(packet);
+        av_packet_unref(&packet);
     }
 end:
     avfilter_graph_free(&filter_graph);
@@ -282,7 +283,6 @@ end:
     avformat_close_input(&fmt_ctx);
     av_frame_free(&frame);
     av_frame_free(&filt_frame);
-    av_packet_free(&packet);
 
     if (ret < 0 && ret != AVERROR_EOF) {
         fprintf(stderr, "Error occurred: %s\n", av_err2str(ret));

doc/examples/http_multiclient.c

@@ -21,11 +21,12 @@
  */
 
 /**
- * @file libavformat multi-client network API usage example
- * @example avio_http_serve_files.c
+ * @file
+ * libavformat multi-client network API usage example.
  *
- * Serve a file without decoding or demuxing it over the HTTP protocol. Multiple
- * clients can connect and will receive the same file.
+ * @example http_multiclient.c
+ * This example will serve a file without decoding or demuxing it over http.
+ * Multiple clients can connect and will receive the same file.
  */
 
 #include <libavformat/avformat.h>
@@ -113,6 +114,7 @@ int main(int argc, char **argv)
     in_uri = argv[1];
     out_uri = argv[2];
 
+    av_register_all();
     avformat_network_init();
 
     if ((ret = av_dict_set(&options, "listen", "2", 0)) < 0) {

doc/examples/hw_decode.c

@@ -1,255 +0,0 @@
-/*
- * Copyright (c) 2017 Jun Zhao
- * Copyright (c) 2017 Kaixuan Liu
- *
- * HW Acceleration API (video decoding) decode sample
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-/**
- * @file HW-accelerated decoding API usage.example
- * @example hw_decode.c
- *
- * Perform HW-accelerated decoding with output frames from HW video
- * surfaces.
- */
-
-#include <stdio.h>
-
-#include <libavcodec/avcodec.h>
-#include <libavformat/avformat.h>
-#include <libavutil/pixdesc.h>
-#include <libavutil/hwcontext.h>
-#include <libavutil/opt.h>
-#include <libavutil/avassert.h>
-#include <libavutil/imgutils.h>
-
-static AVBufferRef *hw_device_ctx = NULL;
-static enum AVPixelFormat hw_pix_fmt;
-static FILE *output_file = NULL;
-
-static int hw_decoder_init(AVCodecContext *ctx, const enum AVHWDeviceType type)
-{
-    int err = 0;
-
-    if ((err = av_hwdevice_ctx_create(&hw_device_ctx, type,
-                                      NULL, NULL, 0)) < 0) {
-        fprintf(stderr, "Failed to create specified HW device.\n");
-        return err;
-    }
-    ctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);
-
-    return err;
-}
-
-static enum AVPixelFormat get_hw_format(AVCodecContext *ctx,
-                                        const enum AVPixelFormat *pix_fmts)
-{
-    const enum AVPixelFormat *p;
-
-    for (p = pix_fmts; *p != -1; p++) {
-        if (*p == hw_pix_fmt)
-            return *p;
-    }
-
-    fprintf(stderr, "Failed to get HW surface format.\n");
-    return AV_PIX_FMT_NONE;
-}
-
-static int decode_write(AVCodecContext *avctx, AVPacket *packet)
-{
-    AVFrame *frame = NULL, *sw_frame = NULL;
-    AVFrame *tmp_frame = NULL;
-    uint8_t *buffer = NULL;
-    int size;
-    int ret = 0;
-
-    ret = avcodec_send_packet(avctx, packet);
-    if (ret < 0) {
-        fprintf(stderr, "Error during decoding\n");
-        return ret;
-    }
-
-    while (1) {
-        if (!(frame = av_frame_alloc()) || !(sw_frame = av_frame_alloc())) {
-            fprintf(stderr, "Can not alloc frame\n");
-            ret = AVERROR(ENOMEM);
-            goto fail;
-        }
-
-        ret = avcodec_receive_frame(avctx, frame);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
-            av_frame_free(&frame);
-            av_frame_free(&sw_frame);
-            return 0;
-        } else if (ret < 0) {
-            fprintf(stderr, "Error while decoding\n");
-            goto fail;
-        }
-
-        if (frame->format == hw_pix_fmt) {
-            /* retrieve data from GPU to CPU */
-            if ((ret = av_hwframe_transfer_data(sw_frame, frame, 0)) < 0) {
-                fprintf(stderr, "Error transferring the data to system memory\n");
-                goto fail;
-            }
-            tmp_frame = sw_frame;
-        } else
-            tmp_frame = frame;
-
-        size = av_image_get_buffer_size(tmp_frame->format, tmp_frame->width,
-                                        tmp_frame->height, 1);
-        buffer = av_malloc(size);
-        if (!buffer) {
-            fprintf(stderr, "Can not alloc buffer\n");
-            ret = AVERROR(ENOMEM);
-            goto fail;
-        }
-        ret = av_image_copy_to_buffer(buffer, size,
-                                      (const uint8_t * const *)tmp_frame->data,
-                                      (const int *)tmp_frame->linesize, tmp_frame->format,
-                                      tmp_frame->width, tmp_frame->height, 1);
-        if (ret < 0) {
-            fprintf(stderr, "Can not copy image to buffer\n");
-            goto fail;
-        }
-
-        if ((ret = fwrite(buffer, 1, size, output_file)) < 0) {
-            fprintf(stderr, "Failed to dump raw data.\n");
-            goto fail;
-        }
-
-    fail:
-        av_frame_free(&frame);
-        av_frame_free(&sw_frame);
-        av_freep(&buffer);
-        if (ret < 0)
-            return ret;
-    }
-}
-
-int main(int argc, char *argv[])
-{
-    AVFormatContext *input_ctx = NULL;
-    int video_stream, ret;
-    AVStream *video = NULL;
-    AVCodecContext *decoder_ctx = NULL;
-    const AVCodec *decoder = NULL;
-    AVPacket *packet = NULL;
-    enum AVHWDeviceType type;
-    int i;
-
-    if (argc < 4) {
-        fprintf(stderr, "Usage: %s <device type> <input file> <output file>\n", argv[0]);
-        return -1;
-    }
-
-    type = av_hwdevice_find_type_by_name(argv[1]);
-    if (type == AV_HWDEVICE_TYPE_NONE) {
-        fprintf(stderr, "Device type %s is not supported.\n", argv[1]);
-        fprintf(stderr, "Available device types:");
-        while((type = av_hwdevice_iterate_types(type)) != AV_HWDEVICE_TYPE_NONE)
-            fprintf(stderr, " %s", av_hwdevice_get_type_name(type));
-        fprintf(stderr, "\n");
-        return -1;
-    }
-
-    packet = av_packet_alloc();
-    if (!packet) {
-        fprintf(stderr, "Failed to allocate AVPacket\n");
-        return -1;
-    }
-
-    /* open the input file */
-    if (avformat_open_input(&input_ctx, argv[2], NULL, NULL) != 0) {
-        fprintf(stderr, "Cannot open input file '%s'\n", argv[2]);
-        return -1;
-    }
-
-    if (avformat_find_stream_info(input_ctx, NULL) < 0) {
-        fprintf(stderr, "Cannot find input stream information.\n");
-        return -1;
-    }
-
-    /* find the video stream information */
-    ret = av_find_best_stream(input_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &decoder, 0);
-    if (ret < 0) {
-        fprintf(stderr, "Cannot find a video stream in the input file\n");
-        return -1;
-    }
-    video_stream = ret;
-
-    for (i = 0;; i++) {
-        const AVCodecHWConfig *config = avcodec_get_hw_config(decoder, i);
-        if (!config) {
-            fprintf(stderr, "Decoder %s does not support device type %s.\n",
-                    decoder->name, av_hwdevice_get_type_name(type));
-            return -1;
-        }
-        if (config->methods & AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX &&
-            config->device_type == type) {
-            hw_pix_fmt = config->pix_fmt;
-            break;
-        }
-    }
-
-    if (!(decoder_ctx = avcodec_alloc_context3(decoder)))
-        return AVERROR(ENOMEM);
-
-    video = input_ctx->streams[video_stream];
-    if (avcodec_parameters_to_context(decoder_ctx, video->codecpar) < 0)
-        return -1;
-
-    decoder_ctx->get_format  = get_hw_format;
-
-    if (hw_decoder_init(decoder_ctx, type) < 0)
-        return -1;
-
-    if ((ret = avcodec_open2(decoder_ctx, decoder, NULL)) < 0) {
-        fprintf(stderr, "Failed to open codec for stream #%u\n", video_stream);
-        return -1;
-    }
-
-    /* open the file to dump raw data */
-    output_file = fopen(argv[3], "w+b");
-
-    /* actual decoding and dump the raw data */
-    while (ret >= 0) {
-        if ((ret = av_read_frame(input_ctx, packet)) < 0)
-            break;
-
-        if (video_stream == packet->stream_index)
-            ret = decode_write(decoder_ctx, packet);
-
-        av_packet_unref(packet);
-    }
-
-    /* flush the decoder */
-    ret = decode_write(decoder_ctx, NULL);
-
-    if (output_file)
-        fclose(output_file);
-    av_packet_free(&packet);
-    avcodec_free_context(&decoder_ctx);
-    avformat_close_input(&input_ctx);
-    av_buffer_unref(&hw_device_ctx);
-
-    return 0;
-}

doc/examples/metadata.c

@@ -21,10 +21,9 @@
  */
 
 /**
- * @file libavformat metadata extraction API usage example
- * @example show_metadata.c
- *
- * Show metadata from an input file.
+ * @file
+ * Shows how the metadata API can be used in application programs.
+ * @example metadata.c
  */
 
 #include <stdio.h>
@@ -35,7 +34,7 @@
 int main (int argc, char **argv)
 {
     AVFormatContext *fmt_ctx = NULL;
-    const AVDictionaryEntry *tag = NULL;
+    AVDictionaryEntry *tag = NULL;
     int ret;
 
     if (argc != 2) {
@@ -45,15 +44,11 @@ int main (int argc, char **argv)
         return 1;
     }
 
+    av_register_all();
     if ((ret = avformat_open_input(&fmt_ctx, argv[1], NULL, NULL)))
         return ret;
 
-    if ((ret = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
-        av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n");
-        return ret;
-    }
-
-    while ((tag = av_dict_iterate(fmt_ctx->metadata, tag)))
+    while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
         printf("%s=%s\n", tag->key, tag->value);
 
     avformat_close_input(&fmt_ctx);

doc/examples/muxing.c

@@ -21,11 +21,12 @@
  */
 
 /**
- * @file libavformat muxing API usage example
- * @example mux.c
+ * @file
+ * libavformat API example.
  *
- * Generate a synthetic audio and video signal and mux them to a media file in
- * any supported libavformat format. The default codecs are used.
+ * Output a media file in any supported libavformat format. The default
+ * codecs are used.
+ * @example muxing.c
  */
 
 #include <stdlib.h>
@@ -38,7 +39,6 @@
 #include <libavutil/opt.h>
 #include <libavutil/mathematics.h>
 #include <libavutil/timestamp.h>
-#include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libswscale/swscale.h>
 #include <libswresample/swresample.h>
@@ -61,8 +61,6 @@ typedef struct OutputStream {
     AVFrame *frame;
     AVFrame *tmp_frame;
 
-    AVPacket *tmp_pkt;
-
     float t, tincr, tincr2;
 
     struct SwsContext *sws_ctx;
@@ -80,50 +78,20 @@ static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt)
            pkt->stream_index);
 }
 
-static int write_frame(AVFormatContext *fmt_ctx, AVCodecContext *c,
-                       AVStream *st, AVFrame *frame, AVPacket *pkt)
+static int write_frame(AVFormatContext *fmt_ctx, const AVRational *time_base, AVStream *st, AVPacket *pkt)
 {
-    int ret;
+    /* rescale output packet timestamp values from codec to stream timebase */
+    av_packet_rescale_ts(pkt, *time_base, st->time_base);
+    pkt->stream_index = st->index;
 
-    // send the frame to the encoder
-    ret = avcodec_send_frame(c, frame);
-    if (ret < 0) {
-        fprintf(stderr, "Error sending a frame to the encoder: %s\n",
-                av_err2str(ret));
-        exit(1);
-    }
-
-    while (ret >= 0) {
-        ret = avcodec_receive_packet(c, pkt);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
-            break;
-        else if (ret < 0) {
-            fprintf(stderr, "Error encoding a frame: %s\n", av_err2str(ret));
-            exit(1);
-        }
-
-        /* rescale output packet timestamp values from codec to stream timebase */
-        av_packet_rescale_ts(pkt, c->time_base, st->time_base);
-        pkt->stream_index = st->index;
-
-        /* Write the compressed frame to the media file. */
-        log_packet(fmt_ctx, pkt);
-        ret = av_interleaved_write_frame(fmt_ctx, pkt);
-        /* pkt is now blank (av_interleaved_write_frame() takes ownership of
-         * its contents and resets pkt), so that no unreferencing is necessary.
-         * This would be different if one used av_write_frame(). */
-        if (ret < 0) {
-            fprintf(stderr, "Error while writing output packet: %s\n", av_err2str(ret));
-            exit(1);
-        }
-    }
-
-    return ret == AVERROR_EOF ? 1 : 0;
+    /* Write the compressed frame to the media file. */
+    log_packet(fmt_ctx, pkt);
+    return av_interleaved_write_frame(fmt_ctx, pkt);
 }
 
 /* Add an output stream. */
 static void add_stream(OutputStream *ost, AVFormatContext *oc,
-                       const AVCodec **codec,
+                       AVCodec **codec,
                        enum AVCodecID codec_id)
 {
     AVCodecContext *c;
@@ -137,12 +105,6 @@ static void add_stream(OutputStream *ost, AVFormatContext *oc,
         exit(1);
     }
 
-    ost->tmp_pkt = av_packet_alloc();
-    if (!ost->tmp_pkt) {
-        fprintf(stderr, "Could not allocate AVPacket\n");
-        exit(1);
-    }
-
     ost->st = avformat_new_stream(oc, NULL);
     if (!ost->st) {
         fprintf(stderr, "Could not allocate stream\n");
@@ -169,7 +131,16 @@ static void add_stream(OutputStream *ost, AVFormatContext *oc,
                     c->sample_rate = 44100;
             }
         }
-        av_channel_layout_copy(&c->ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO);
+        c->channels        = av_get_channel_layout_nb_channels(c->channel_layout);
+        c->channel_layout = AV_CH_LAYOUT_STEREO;
+        if ((*codec)->channel_layouts) {
+            c->channel_layout = (*codec)->channel_layouts[0];
+            for (i = 0; (*codec)->channel_layouts[i]; i++) {
+                if ((*codec)->channel_layouts[i] == AV_CH_LAYOUT_STEREO)
+                    c->channel_layout = AV_CH_LAYOUT_STEREO;
+            }
+        }
+        c->channels        = av_get_channel_layout_nb_channels(c->channel_layout);
         ost->st->time_base = (AVRational){ 1, c->sample_rate };
         break;
 
@@ -199,7 +170,7 @@ static void add_stream(OutputStream *ost, AVFormatContext *oc,
              * the motion of the chroma plane does not match the luma plane. */
             c->mb_decision = 2;
         }
-        break;
+    break;
 
     default:
         break;
@@ -214,22 +185,25 @@ static void add_stream(OutputStream *ost, AVFormatContext *oc,
 /* audio output */
 
 static AVFrame *alloc_audio_frame(enum AVSampleFormat sample_fmt,
-                                  const AVChannelLayout *channel_layout,
+                                  uint64_t channel_layout,
                                   int sample_rate, int nb_samples)
 {
     AVFrame *frame = av_frame_alloc();
+    int ret;
+
     if (!frame) {
         fprintf(stderr, "Error allocating an audio frame\n");
         exit(1);
     }
 
     frame->format = sample_fmt;
-    av_channel_layout_copy(&frame->ch_layout, channel_layout);
+    frame->channel_layout = channel_layout;
     frame->sample_rate = sample_rate;
     frame->nb_samples = nb_samples;
 
     if (nb_samples) {
-        if (av_frame_get_buffer(frame, 0) < 0) {
+        ret = av_frame_get_buffer(frame, 0);
+        if (ret < 0) {
             fprintf(stderr, "Error allocating an audio buffer\n");
             exit(1);
         }
@@ -238,8 +212,7 @@ static AVFrame *alloc_audio_frame(enum AVSampleFormat sample_fmt,
     return frame;
 }
 
-static void open_audio(AVFormatContext *oc, const AVCodec *codec,
-                       OutputStream *ost, AVDictionary *opt_arg)
+static void open_audio(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
 {
     AVCodecContext *c;
     int nb_samples;
@@ -268,9 +241,9 @@ static void open_audio(AVFormatContext *oc, const AVCodec *codec,
     else
         nb_samples = c->frame_size;
 
-    ost->frame     = alloc_audio_frame(c->sample_fmt, &c->ch_layout,
+    ost->frame     = alloc_audio_frame(c->sample_fmt, c->channel_layout,
                                        c->sample_rate, nb_samples);
-    ost->tmp_frame = alloc_audio_frame(AV_SAMPLE_FMT_S16, &c->ch_layout,
+    ost->tmp_frame = alloc_audio_frame(AV_SAMPLE_FMT_S16, c->channel_layout,
                                        c->sample_rate, nb_samples);
 
     /* copy the stream parameters to the muxer */
@@ -281,25 +254,25 @@ static void open_audio(AVFormatContext *oc, const AVCodec *codec,
     }
 
     /* create resampler context */
-    ost->swr_ctx = swr_alloc();
-    if (!ost->swr_ctx) {
-        fprintf(stderr, "Could not allocate resampler context\n");
-        exit(1);
-    }
+        ost->swr_ctx = swr_alloc();
+        if (!ost->swr_ctx) {
+            fprintf(stderr, "Could not allocate resampler context\n");
+            exit(1);
+        }
 
-    /* set options */
-    av_opt_set_chlayout  (ost->swr_ctx, "in_chlayout",       &c->ch_layout,      0);
-    av_opt_set_int       (ost->swr_ctx, "in_sample_rate",     c->sample_rate,    0);
-    av_opt_set_sample_fmt(ost->swr_ctx, "in_sample_fmt",      AV_SAMPLE_FMT_S16, 0);
-    av_opt_set_chlayout  (ost->swr_ctx, "out_chlayout",      &c->ch_layout,      0);
-    av_opt_set_int       (ost->swr_ctx, "out_sample_rate",    c->sample_rate,    0);
-    av_opt_set_sample_fmt(ost->swr_ctx, "out_sample_fmt",     c->sample_fmt,     0);
+        /* set options */
+        av_opt_set_int       (ost->swr_ctx, "in_channel_count",   c->channels,       0);
+        av_opt_set_int       (ost->swr_ctx, "in_sample_rate",     c->sample_rate,    0);
+        av_opt_set_sample_fmt(ost->swr_ctx, "in_sample_fmt",      AV_SAMPLE_FMT_S16, 0);
+        av_opt_set_int       (ost->swr_ctx, "out_channel_count",  c->channels,       0);
+        av_opt_set_int       (ost->swr_ctx, "out_sample_rate",    c->sample_rate,    0);
+        av_opt_set_sample_fmt(ost->swr_ctx, "out_sample_fmt",     c->sample_fmt,     0);
 
-    /* initialize the resampling context */
-    if ((ret = swr_init(ost->swr_ctx)) < 0) {
-        fprintf(stderr, "Failed to initialize the resampling context\n");
-        exit(1);
-    }
+        /* initialize the resampling context */
+        if ((ret = swr_init(ost->swr_ctx)) < 0) {
+            fprintf(stderr, "Failed to initialize the resampling context\n");
+            exit(1);
+        }
 }
 
 /* Prepare a 16 bit dummy audio frame of 'frame_size' samples and
@@ -312,12 +285,12 @@ static AVFrame *get_audio_frame(OutputStream *ost)
 
     /* check if we want to generate more frames */
     if (av_compare_ts(ost->next_pts, ost->enc->time_base,
-                      STREAM_DURATION, (AVRational){ 1, 1 }) > 0)
+                      STREAM_DURATION, (AVRational){ 1, 1 }) >= 0)
         return NULL;
 
     for (j = 0; j <frame->nb_samples; j++) {
         v = (int)(sin(ost->t) * 10000);
-        for (i = 0; i < ost->enc->ch_layout.nb_channels; i++)
+        for (i = 0; i < ost->enc->channels; i++)
             *q++ = v;
         ost->t     += ost->tincr;
         ost->tincr += ost->tincr2;
@@ -336,20 +309,23 @@ static AVFrame *get_audio_frame(OutputStream *ost)
 static int write_audio_frame(AVFormatContext *oc, OutputStream *ost)
 {
     AVCodecContext *c;
+    AVPacket pkt = { 0 }; // data and size must be 0;
     AVFrame *frame;
     int ret;
+    int got_packet;
     int dst_nb_samples;
 
+    av_init_packet(&pkt);
     c = ost->enc;
 
     frame = get_audio_frame(ost);
 
     if (frame) {
         /* convert samples from native format to destination codec format, using the resampler */
-        /* compute destination number of samples */
-        dst_nb_samples = av_rescale_rnd(swr_get_delay(ost->swr_ctx, c->sample_rate) + frame->nb_samples,
-                                        c->sample_rate, c->sample_rate, AV_ROUND_UP);
-        av_assert0(dst_nb_samples == frame->nb_samples);
+            /* compute destination number of samples */
+            dst_nb_samples = av_rescale_rnd(swr_get_delay(ost->swr_ctx, c->sample_rate) + frame->nb_samples,
+                                            c->sample_rate, c->sample_rate, AV_ROUND_UP);
+            av_assert0(dst_nb_samples == frame->nb_samples);
 
         /* when we pass a frame to the encoder, it may keep a reference to it
          * internally;
@@ -373,37 +349,51 @@ static int write_audio_frame(AVFormatContext *oc, OutputStream *ost)
         ost->samples_count += dst_nb_samples;
     }
 
-    return write_frame(oc, c, ost->st, frame, ost->tmp_pkt);
+    ret = avcodec_encode_audio2(c, &pkt, frame, &got_packet);
+    if (ret < 0) {
+        fprintf(stderr, "Error encoding audio frame: %s\n", av_err2str(ret));
+        exit(1);
+    }
+
+    if (got_packet) {
+        ret = write_frame(oc, &c->time_base, ost->st, &pkt);
+        if (ret < 0) {
+            fprintf(stderr, "Error while writing audio frame: %s\n",
+                    av_err2str(ret));
+            exit(1);
+        }
+    }
+
+    return (frame || got_packet) ? 0 : 1;
 }
 
 /**************************************************************/
 /* video output */
 
-static AVFrame *alloc_frame(enum AVPixelFormat pix_fmt, int width, int height)
+static AVFrame *alloc_picture(enum AVPixelFormat pix_fmt, int width, int height)
 {
-    AVFrame *frame;
+    AVFrame *picture;
     int ret;
 
-    frame = av_frame_alloc();
-    if (!frame)
+    picture = av_frame_alloc();
+    if (!picture)
         return NULL;
 
-    frame->format = pix_fmt;
-    frame->width  = width;
-    frame->height = height;
+    picture->format = pix_fmt;
+    picture->width  = width;
+    picture->height = height;
 
     /* allocate the buffers for the frame data */
-    ret = av_frame_get_buffer(frame, 0);
+    ret = av_frame_get_buffer(picture, 32);
     if (ret < 0) {
         fprintf(stderr, "Could not allocate frame data.\n");
         exit(1);
     }
 
-    return frame;
+    return picture;
 }
 
-static void open_video(AVFormatContext *oc, const AVCodec *codec,
-                       OutputStream *ost, AVDictionary *opt_arg)
+static void open_video(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
 {
     int ret;
     AVCodecContext *c = ost->enc;
@@ -420,7 +410,7 @@ static void open_video(AVFormatContext *oc, const AVCodec *codec,
     }
 
     /* allocate and init a re-usable frame */
-    ost->frame = alloc_frame(c->pix_fmt, c->width, c->height);
+    ost->frame = alloc_picture(c->pix_fmt, c->width, c->height);
     if (!ost->frame) {
         fprintf(stderr, "Could not allocate video frame\n");
         exit(1);
@@ -431,9 +421,9 @@ static void open_video(AVFormatContext *oc, const AVCodec *codec,
      * output format. */
     ost->tmp_frame = NULL;
     if (c->pix_fmt != AV_PIX_FMT_YUV420P) {
-        ost->tmp_frame = alloc_frame(AV_PIX_FMT_YUV420P, c->width, c->height);
+        ost->tmp_frame = alloc_picture(AV_PIX_FMT_YUV420P, c->width, c->height);
         if (!ost->tmp_frame) {
-            fprintf(stderr, "Could not allocate temporary video frame\n");
+            fprintf(stderr, "Could not allocate temporary picture\n");
             exit(1);
         }
     }
@@ -474,7 +464,7 @@ static AVFrame *get_video_frame(OutputStream *ost)
 
     /* check if we want to generate more frames */
     if (av_compare_ts(ost->next_pts, c->time_base,
-                      STREAM_DURATION, (AVRational){ 1, 1 }) > 0)
+                      STREAM_DURATION, (AVRational){ 1, 1 }) >= 0)
         return NULL;
 
     /* when we pass a frame to the encoder, it may keep a reference to it
@@ -498,9 +488,9 @@ static AVFrame *get_video_frame(OutputStream *ost)
             }
         }
         fill_yuv_image(ost->tmp_frame, ost->next_pts, c->width, c->height);
-        sws_scale(ost->sws_ctx, (const uint8_t * const *) ost->tmp_frame->data,
-                  ost->tmp_frame->linesize, 0, c->height, ost->frame->data,
-                  ost->frame->linesize);
+        sws_scale(ost->sws_ctx,
+                  (const uint8_t * const *)ost->tmp_frame->data, ost->tmp_frame->linesize,
+                  0, c->height, ost->frame->data, ost->frame->linesize);
     } else {
         fill_yuv_image(ost->frame, ost->next_pts, c->width, c->height);
     }
@@ -516,7 +506,37 @@ static AVFrame *get_video_frame(OutputStream *ost)
  */
 static int write_video_frame(AVFormatContext *oc, OutputStream *ost)
 {
-    return write_frame(oc, ost->enc, ost->st, get_video_frame(ost), ost->tmp_pkt);
+    int ret;
+    AVCodecContext *c;
+    AVFrame *frame;
+    int got_packet = 0;
+    AVPacket pkt = { 0 };
+
+    c = ost->enc;
+
+    frame = get_video_frame(ost);
+
+    av_init_packet(&pkt);
+
+    /* encode the image */
+    ret = avcodec_encode_video2(c, &pkt, frame, &got_packet);
+    if (ret < 0) {
+        fprintf(stderr, "Error encoding video frame: %s\n", av_err2str(ret));
+        exit(1);
+    }
+
+    if (got_packet) {
+        ret = write_frame(oc, &c->time_base, ost->st, &pkt);
+    } else {
+        ret = 0;
+    }
+
+    if (ret < 0) {
+        fprintf(stderr, "Error while writing video frame: %s\n", av_err2str(ret));
+        exit(1);
+    }
+
+    return (frame || got_packet) ? 0 : 1;
 }
 
 static void close_stream(AVFormatContext *oc, OutputStream *ost)
@@ -524,7 +544,6 @@ static void close_stream(AVFormatContext *oc, OutputStream *ost)
     avcodec_free_context(&ost->enc);
     av_frame_free(&ost->frame);
     av_frame_free(&ost->tmp_frame);
-    av_packet_free(&ost->tmp_pkt);
     sws_freeContext(ost->sws_ctx);
     swr_free(&ost->swr_ctx);
 }
@@ -535,16 +554,19 @@ static void close_stream(AVFormatContext *oc, OutputStream *ost)
 int main(int argc, char **argv)
 {
     OutputStream video_st = { 0 }, audio_st = { 0 };
-    const AVOutputFormat *fmt;
     const char *filename;
+    AVOutputFormat *fmt;
     AVFormatContext *oc;
-    const AVCodec *audio_codec, *video_codec;
+    AVCodec *audio_codec, *video_codec;
     int ret;
     int have_video = 0, have_audio = 0;
     int encode_video = 0, encode_audio = 0;
     AVDictionary *opt = NULL;
     int i;
 
+    /* Initialize libavcodec, and register all codecs and formats. */
+    av_register_all();
+
     if (argc < 2) {
         printf("usage: %s output_file\n"
                "API example program to output a media file with libavformat.\n"
@@ -625,6 +647,10 @@ int main(int argc, char **argv)
         }
     }
 
+    /* Write the trailer, if any. The trailer must be written before you
+     * close the CodecContexts open when you wrote the header; otherwise
+     * av_write_trailer() may try to use memory that was freed on
+     * av_codec_close(). */
     av_write_trailer(oc);
 
     /* Close each codec. */

doc/examples/qsv_decode.c

@@ -1,243 +0,0 @@
-/*
- * Copyright (c) 2015 Anton Khirnov
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-/**
- * @file Intel QSV-accelerated H.264 decoding API usage example
- * @example qsv_decode.c
- *
- * Perform QSV-accelerated H.264 decoding with output frames in the
- * GPU video surfaces, write the decoded frames to an output file.
- */
-
-#include "config.h"
-
-#include <stdio.h>
-
-#include "libavformat/avformat.h"
-#include "libavformat/avio.h"
-
-#include "libavcodec/avcodec.h"
-
-#include "libavutil/buffer.h"
-#include "libavutil/error.h"
-#include "libavutil/hwcontext.h"
-#include "libavutil/hwcontext_qsv.h"
-#include "libavutil/mem.h"
-
-static int get_format(AVCodecContext *avctx, const enum AVPixelFormat *pix_fmts)
-{
-    while (*pix_fmts != AV_PIX_FMT_NONE) {
-        if (*pix_fmts == AV_PIX_FMT_QSV) {
-            return AV_PIX_FMT_QSV;
-        }
-
-        pix_fmts++;
-    }
-
-    fprintf(stderr, "The QSV pixel format not offered in get_format()\n");
-
-    return AV_PIX_FMT_NONE;
-}
-
-static int decode_packet(AVCodecContext *decoder_ctx,
-                         AVFrame *frame, AVFrame *sw_frame,
-                         AVPacket *pkt, AVIOContext *output_ctx)
-{
-    int ret = 0;
-
-    ret = avcodec_send_packet(decoder_ctx, pkt);
-    if (ret < 0) {
-        fprintf(stderr, "Error during decoding\n");
-        return ret;
-    }
-
-    while (ret >= 0) {
-        int i, j;
-
-        ret = avcodec_receive_frame(decoder_ctx, frame);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
-            break;
-        else if (ret < 0) {
-            fprintf(stderr, "Error during decoding\n");
-            return ret;
-        }
-
-        /* A real program would do something useful with the decoded frame here.
-         * We just retrieve the raw data and write it to a file, which is rather
-         * useless but pedagogic. */
-        ret = av_hwframe_transfer_data(sw_frame, frame, 0);
-        if (ret < 0) {
-            fprintf(stderr, "Error transferring the data to system memory\n");
-            goto fail;
-        }
-
-        for (i = 0; i < FF_ARRAY_ELEMS(sw_frame->data) && sw_frame->data[i]; i++)
-            for (j = 0; j < (sw_frame->height >> (i > 0)); j++)
-                avio_write(output_ctx, sw_frame->data[i] + j * sw_frame->linesize[i], sw_frame->width);
-
-fail:
-        av_frame_unref(sw_frame);
-        av_frame_unref(frame);
-
-        if (ret < 0)
-            return ret;
-    }
-
-    return 0;
-}
-
-int main(int argc, char **argv)
-{
-    AVFormatContext *input_ctx = NULL;
-    AVStream *video_st = NULL;
-    AVCodecContext *decoder_ctx = NULL;
-    const AVCodec *decoder;
-
-    AVPacket *pkt = NULL;
-    AVFrame *frame = NULL, *sw_frame = NULL;
-
-    AVIOContext *output_ctx = NULL;
-
-    int ret, i;
-
-    AVBufferRef *device_ref = NULL;
-
-    if (argc < 3) {
-        fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
-        return 1;
-    }
-
-    /* open the input file */
-    ret = avformat_open_input(&input_ctx, argv[1], NULL, NULL);
-    if (ret < 0) {
-        fprintf(stderr, "Cannot open input file '%s': ", argv[1]);
-        goto finish;
-    }
-
-    /* find the first H.264 video stream */
-    for (i = 0; i < input_ctx->nb_streams; i++) {
-        AVStream *st = input_ctx->streams[i];
-
-        if (st->codecpar->codec_id == AV_CODEC_ID_H264 && !video_st)
-            video_st = st;
-        else
-            st->discard = AVDISCARD_ALL;
-    }
-    if (!video_st) {
-        fprintf(stderr, "No H.264 video stream in the input file\n");
-        goto finish;
-    }
-
-    /* open the hardware device */
-    ret = av_hwdevice_ctx_create(&device_ref, AV_HWDEVICE_TYPE_QSV,
-                                 "auto", NULL, 0);
-    if (ret < 0) {
-        fprintf(stderr, "Cannot open the hardware device\n");
-        goto finish;
-    }
-
-    /* initialize the decoder */
-    decoder = avcodec_find_decoder_by_name("h264_qsv");
-    if (!decoder) {
-        fprintf(stderr, "The QSV decoder is not present in libavcodec\n");
-        goto finish;
-    }
-
-    decoder_ctx = avcodec_alloc_context3(decoder);
-    if (!decoder_ctx) {
-        ret = AVERROR(ENOMEM);
-        goto finish;
-    }
-    decoder_ctx->codec_id = AV_CODEC_ID_H264;
-    if (video_st->codecpar->extradata_size) {
-        decoder_ctx->extradata = av_mallocz(video_st->codecpar->extradata_size +
-                                            AV_INPUT_BUFFER_PADDING_SIZE);
-        if (!decoder_ctx->extradata) {
-            ret = AVERROR(ENOMEM);
-            goto finish;
-        }
-        memcpy(decoder_ctx->extradata, video_st->codecpar->extradata,
-               video_st->codecpar->extradata_size);
-        decoder_ctx->extradata_size = video_st->codecpar->extradata_size;
-    }
-
-
-    decoder_ctx->hw_device_ctx = av_buffer_ref(device_ref);
-    decoder_ctx->get_format  = get_format;
-
-    ret = avcodec_open2(decoder_ctx, NULL, NULL);
-    if (ret < 0) {
-        fprintf(stderr, "Error opening the decoder: ");
-        goto finish;
-    }
-
-    /* open the output stream */
-    ret = avio_open(&output_ctx, argv[2], AVIO_FLAG_WRITE);
-    if (ret < 0) {
-        fprintf(stderr, "Error opening the output context: ");
-        goto finish;
-    }
-
-    frame    = av_frame_alloc();
-    sw_frame = av_frame_alloc();
-    pkt      = av_packet_alloc();
-    if (!frame || !sw_frame || !pkt) {
-        ret = AVERROR(ENOMEM);
-        goto finish;
-    }
-
-    /* actual decoding */
-    while (ret >= 0) {
-        ret = av_read_frame(input_ctx, pkt);
-        if (ret < 0)
-            break;
-
-        if (pkt->stream_index == video_st->index)
-            ret = decode_packet(decoder_ctx, frame, sw_frame, pkt, output_ctx);
-
-        av_packet_unref(pkt);
-    }
-
-    /* flush the decoder */
-    ret = decode_packet(decoder_ctx, frame, sw_frame, NULL, output_ctx);
-
-finish:
-    if (ret < 0) {
-        char buf[1024];
-        av_strerror(ret, buf, sizeof(buf));
-        fprintf(stderr, "%s\n", buf);
-    }
-
-    avformat_close_input(&input_ctx);
-
-    av_frame_free(&frame);
-    av_frame_free(&sw_frame);
-    av_packet_free(&pkt);
-
-    avcodec_free_context(&decoder_ctx);
-
-    av_buffer_unref(&device_ref);
-
-    avio_close(output_ctx);
-
-    return ret;
-}

doc/examples/qsv_transcode.c

@@ -1,438 +0,0 @@
-/*
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-/**
- * @file Intel QSV-accelerated video transcoding API usage example
- * @example qsv_transcode.c
- *
- * Perform QSV-accelerated transcoding and show to dynamically change
- * encoder's options.
- *
- * Usage: qsv_transcode input_stream codec output_stream initial option
- *                      { frame_number new_option }
- * e.g: - qsv_transcode input.mp4 h264_qsv output_h264.mp4 "g 60"
- *      - qsv_transcode input.mp4 hevc_qsv output_hevc.mp4 "g 60 async_depth 1"
- *                      100 "g 120"
- *         (initialize codec with gop_size 60 and change it to 120 after 100
- *          frames)
- */
-
-#include <stdio.h>
-#include <errno.h>
-
-#include <libavutil/hwcontext.h>
-#include <libavcodec/avcodec.h>
-#include <libavformat/avformat.h>
-#include <libavutil/opt.h>
-
-static AVFormatContext *ifmt_ctx = NULL, *ofmt_ctx = NULL;
-static AVBufferRef *hw_device_ctx = NULL;
-static AVCodecContext *decoder_ctx = NULL, *encoder_ctx = NULL;
-static int video_stream = -1;
-
-typedef struct DynamicSetting {
-    int frame_number;
-    char* optstr;
-} DynamicSetting;
-static DynamicSetting *dynamic_setting;
-static int setting_number;
-static int current_setting_number;
-
-static int str_to_dict(char* optstr, AVDictionary **opt)
-{
-    char *key, *value;
-    if (strlen(optstr) == 0)
-        return 0;
-    key = strtok(optstr, " ");
-    if (key == NULL)
-        return AVERROR(ENAVAIL);
-    value = strtok(NULL, " ");
-    if (value == NULL)
-        return AVERROR(ENAVAIL);
-    av_dict_set(opt, key, value, 0);
-    do {
-        key = strtok(NULL, " ");
-        if (key == NULL)
-            return 0;
-        value = strtok(NULL, " ");
-        if (value == NULL)
-            return AVERROR(ENAVAIL);
-        av_dict_set(opt, key, value, 0);
-    } while(key != NULL);
-    return 0;
-}
-
-static int dynamic_set_parameter(AVCodecContext *avctx)
-{
-    AVDictionary *opts = NULL;
-    int ret = 0;
-    static int frame_number = 0;
-    frame_number++;
-    if (current_setting_number < setting_number &&
-        frame_number == dynamic_setting[current_setting_number].frame_number) {
-        AVDictionaryEntry *e = NULL;
-        ret = str_to_dict(dynamic_setting[current_setting_number++].optstr, &opts);
-        if (ret < 0) {
-            fprintf(stderr, "The dynamic parameter is wrong\n");
-            goto fail;
-        }
-        /* Set common option. The dictionary will be freed and replaced
-         * by a new one containing all options not found in common option list.
-         * Then this new dictionary is used to set private option. */
-        if ((ret = av_opt_set_dict(avctx, &opts)) < 0)
-            goto fail;
-        /* Set codec specific option */
-        if ((ret = av_opt_set_dict(avctx->priv_data, &opts)) < 0)
-            goto fail;
-        /* There is no "framerate" option in commom option list. Use "-r" to set
-         * framerate, which is compatible with ffmpeg commandline. The video is
-         * assumed to be average frame rate, so set time_base to 1/framerate. */
-        e = av_dict_get(opts, "r", NULL, 0);
-        if (e) {
-            avctx->framerate = av_d2q(atof(e->value), INT_MAX);
-            encoder_ctx->time_base = av_inv_q(encoder_ctx->framerate);
-        }
-    }
-fail:
-    av_dict_free(&opts);
-    return ret;
-}
-
-static int get_format(AVCodecContext *avctx, const enum AVPixelFormat *pix_fmts)
-{
-    while (*pix_fmts != AV_PIX_FMT_NONE) {
-        if (*pix_fmts == AV_PIX_FMT_QSV) {
-            return AV_PIX_FMT_QSV;
-        }
-
-        pix_fmts++;
-    }
-
-    fprintf(stderr, "The QSV pixel format not offered in get_format()\n");
-
-    return AV_PIX_FMT_NONE;
-}
-
-static int open_input_file(char *filename)
-{
-    int ret;
-    const AVCodec *decoder = NULL;
-    AVStream *video = NULL;
-
-    if ((ret = avformat_open_input(&ifmt_ctx, filename, NULL, NULL)) < 0) {
-        fprintf(stderr, "Cannot open input file '%s', Error code: %s\n",
-                filename, av_err2str(ret));
-        return ret;
-    }
-
-    if ((ret = avformat_find_stream_info(ifmt_ctx, NULL)) < 0) {
-        fprintf(stderr, "Cannot find input stream information. Error code: %s\n",
-                av_err2str(ret));
-        return ret;
-    }
-
-    ret = av_find_best_stream(ifmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
-    if (ret < 0) {
-        fprintf(stderr, "Cannot find a video stream in the input file. "
-                "Error code: %s\n", av_err2str(ret));
-        return ret;
-    }
-    video_stream = ret;
-    video = ifmt_ctx->streams[video_stream];
-
-    switch(video->codecpar->codec_id) {
-    case AV_CODEC_ID_H264:
-        decoder = avcodec_find_decoder_by_name("h264_qsv");
-        break;
-    case AV_CODEC_ID_HEVC:
-        decoder = avcodec_find_decoder_by_name("hevc_qsv");
-        break;
-    case AV_CODEC_ID_VP9:
-        decoder = avcodec_find_decoder_by_name("vp9_qsv");
-        break;
-    case AV_CODEC_ID_VP8:
-        decoder = avcodec_find_decoder_by_name("vp8_qsv");
-        break;
-    case AV_CODEC_ID_AV1:
-        decoder = avcodec_find_decoder_by_name("av1_qsv");
-        break;
-    case AV_CODEC_ID_MPEG2VIDEO:
-        decoder = avcodec_find_decoder_by_name("mpeg2_qsv");
-        break;
-    case AV_CODEC_ID_MJPEG:
-        decoder = avcodec_find_decoder_by_name("mjpeg_qsv");
-        break;
-    default:
-        fprintf(stderr, "Codec is not supportted by qsv\n");
-        return AVERROR(ENAVAIL);
-    }
-
-    if (!(decoder_ctx = avcodec_alloc_context3(decoder)))
-        return AVERROR(ENOMEM);
-
-    if ((ret = avcodec_parameters_to_context(decoder_ctx, video->codecpar)) < 0) {
-        fprintf(stderr, "avcodec_parameters_to_context error. Error code: %s\n",
-                av_err2str(ret));
-        return ret;
-    }
-    decoder_ctx->framerate = av_guess_frame_rate(ifmt_ctx, video, NULL);
-
-    decoder_ctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);
-    if (!decoder_ctx->hw_device_ctx) {
-        fprintf(stderr, "A hardware device reference create failed.\n");
-        return AVERROR(ENOMEM);
-    }
-    decoder_ctx->get_format    = get_format;
-    decoder_ctx->pkt_timebase = video->time_base;
-    if ((ret = avcodec_open2(decoder_ctx, decoder, NULL)) < 0)
-        fprintf(stderr, "Failed to open codec for decoding. Error code: %s\n",
-                av_err2str(ret));
-
-    return ret;
-}
-
-static int encode_write(AVPacket *enc_pkt, AVFrame *frame)
-{
-    int ret = 0;
-
-    av_packet_unref(enc_pkt);
-
-    if((ret = dynamic_set_parameter(encoder_ctx)) < 0) {
-        fprintf(stderr, "Failed to set dynamic parameter. Error code: %s\n",
-                av_err2str(ret));
-        goto end;
-    }
-
-    if ((ret = avcodec_send_frame(encoder_ctx, frame)) < 0) {
-        fprintf(stderr, "Error during encoding. Error code: %s\n", av_err2str(ret));
-        goto end;
-    }
-    while (1) {
-        if (ret = avcodec_receive_packet(encoder_ctx, enc_pkt))
-            break;
-        enc_pkt->stream_index = 0;
-        av_packet_rescale_ts(enc_pkt, encoder_ctx->time_base,
-                             ofmt_ctx->streams[0]->time_base);
-        if ((ret = av_interleaved_write_frame(ofmt_ctx, enc_pkt)) < 0) {
-            fprintf(stderr, "Error during writing data to output file. "
-                    "Error code: %s\n", av_err2str(ret));
-            return ret;
-        }
-    }
-
-end:
-    if (ret == AVERROR_EOF)
-        return 0;
-    ret = ((ret == AVERROR(EAGAIN)) ? 0:-1);
-    return ret;
-}
-
-static int dec_enc(AVPacket *pkt, const AVCodec *enc_codec, char *optstr)
-{
-    AVFrame *frame;
-    int ret = 0;
-
-    ret = avcodec_send_packet(decoder_ctx, pkt);
-    if (ret < 0) {
-        fprintf(stderr, "Error during decoding. Error code: %s\n", av_err2str(ret));
-        return ret;
-    }
-
-    while (ret >= 0) {
-        if (!(frame = av_frame_alloc()))
-            return AVERROR(ENOMEM);
-
-        ret = avcodec_receive_frame(decoder_ctx, frame);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
-            av_frame_free(&frame);
-            return 0;
-        } else if (ret < 0) {
-            fprintf(stderr, "Error while decoding. Error code: %s\n", av_err2str(ret));
-            goto fail;
-        }
-        if (!encoder_ctx->hw_frames_ctx) {
-            AVDictionaryEntry *e = NULL;
-            AVDictionary *opts = NULL;
-            AVStream *ost;
-            /* we need to ref hw_frames_ctx of decoder to initialize encoder's codec.
-               Only after we get a decoded frame, can we obtain its hw_frames_ctx */
-            encoder_ctx->hw_frames_ctx = av_buffer_ref(decoder_ctx->hw_frames_ctx);
-            if (!encoder_ctx->hw_frames_ctx) {
-                ret = AVERROR(ENOMEM);
-                goto fail;
-            }
-            /* set AVCodecContext Parameters for encoder, here we keep them stay
-             * the same as decoder.
-             */
-            encoder_ctx->time_base = av_inv_q(decoder_ctx->framerate);
-            encoder_ctx->pix_fmt   = AV_PIX_FMT_QSV;
-            encoder_ctx->width     = decoder_ctx->width;
-            encoder_ctx->height    = decoder_ctx->height;
-            if ((ret = str_to_dict(optstr, &opts)) < 0) {
-                fprintf(stderr, "Failed to set encoding parameter.\n");
-                goto fail;
-            }
-            /* There is no "framerate" option in commom option list. Use "-r" to
-            * set framerate, which is compatible with ffmpeg commandline. The
-            * video is assumed to be average frame rate, so set time_base to
-            * 1/framerate. */
-            e = av_dict_get(opts, "r", NULL, 0);
-            if (e) {
-                encoder_ctx->framerate = av_d2q(atof(e->value), INT_MAX);
-                encoder_ctx->time_base = av_inv_q(encoder_ctx->framerate);
-            }
-            if ((ret = avcodec_open2(encoder_ctx, enc_codec, &opts)) < 0) {
-                fprintf(stderr, "Failed to open encode codec. Error code: %s\n",
-                        av_err2str(ret));
-                av_dict_free(&opts);
-                goto fail;
-            }
-            av_dict_free(&opts);
-
-            if (!(ost = avformat_new_stream(ofmt_ctx, enc_codec))) {
-                fprintf(stderr, "Failed to allocate stream for output format.\n");
-                ret = AVERROR(ENOMEM);
-                goto fail;
-            }
-
-            ost->time_base = encoder_ctx->time_base;
-            ret = avcodec_parameters_from_context(ost->codecpar, encoder_ctx);
-            if (ret < 0) {
-                fprintf(stderr, "Failed to copy the stream parameters. "
-                        "Error code: %s\n", av_err2str(ret));
-                goto fail;
-            }
-
-            /* write the stream header */
-            if ((ret = avformat_write_header(ofmt_ctx, NULL)) < 0) {
-                fprintf(stderr, "Error while writing stream header. "
-                        "Error code: %s\n", av_err2str(ret));
-                goto fail;
-            }
-        }
-        frame->pts = av_rescale_q(frame->pts, decoder_ctx->pkt_timebase,
-                                  encoder_ctx->time_base);
-        if ((ret = encode_write(pkt, frame)) < 0)
-            fprintf(stderr, "Error during encoding and writing.\n");
-
-fail:
-        av_frame_free(&frame);
-        if (ret < 0)
-            return ret;
-    }
-    return 0;
-}
-
-int main(int argc, char **argv)
-{
-    const AVCodec *enc_codec;
-    int ret = 0;
-    AVPacket *dec_pkt;
-
-    if (argc < 5 || (argc - 5) % 2) {
-        av_log(NULL, AV_LOG_ERROR, "Usage: %s <input file> <encoder> <output file>"
-               " <\"encoding option set 0\"> [<frame_number> <\"encoding options set 1\">]...\n", argv[0]);
-        return 1;
-    }
-    setting_number = (argc - 5) / 2;
-    dynamic_setting = av_malloc(setting_number * sizeof(*dynamic_setting));
-    current_setting_number = 0;
-    for (int i = 0; i < setting_number; i++) {
-        dynamic_setting[i].frame_number = atoi(argv[i*2 + 5]);
-        dynamic_setting[i].optstr = argv[i*2 + 6];
-    }
-
-    ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV, NULL, NULL, 0);
-    if (ret < 0) {
-        fprintf(stderr, "Failed to create a QSV device. Error code: %s\n", av_err2str(ret));
-        goto end;
-    }
-
-    dec_pkt = av_packet_alloc();
-    if (!dec_pkt) {
-        fprintf(stderr, "Failed to allocate decode packet\n");
-        goto end;
-    }
-
-    if ((ret = open_input_file(argv[1])) < 0)
-        goto end;
-
-    if (!(enc_codec = avcodec_find_encoder_by_name(argv[2]))) {
-        fprintf(stderr, "Could not find encoder '%s'\n", argv[2]);
-        ret = -1;
-        goto end;
-    }
-
-    if ((ret = (avformat_alloc_output_context2(&ofmt_ctx, NULL, NULL, argv[3]))) < 0) {
-        fprintf(stderr, "Failed to deduce output format from file extension. Error code: "
-                "%s\n", av_err2str(ret));
-        goto end;
-    }
-
-    if (!(encoder_ctx = avcodec_alloc_context3(enc_codec))) {
-        ret = AVERROR(ENOMEM);
-        goto end;
-    }
-
-    ret = avio_open(&ofmt_ctx->pb, argv[3], AVIO_FLAG_WRITE);
-    if (ret < 0) {
-        fprintf(stderr, "Cannot open output file. "
-                "Error code: %s\n", av_err2str(ret));
-        goto end;
-    }
-
-    /* read all packets and only transcoding video */
-    while (ret >= 0) {
-        if ((ret = av_read_frame(ifmt_ctx, dec_pkt)) < 0)
-            break;
-
-        if (video_stream == dec_pkt->stream_index)
-            ret = dec_enc(dec_pkt, enc_codec, argv[4]);
-
-        av_packet_unref(dec_pkt);
-    }
-
-    /* flush decoder */
-    av_packet_unref(dec_pkt);
-    if ((ret = dec_enc(dec_pkt, enc_codec, argv[4])) < 0) {
-        fprintf(stderr, "Failed to flush decoder %s\n", av_err2str(ret));
-        goto end;
-    }
-
-    /* flush encoder */
-    if ((ret = encode_write(dec_pkt, NULL)) < 0) {
-        fprintf(stderr, "Failed to flush encoder %s\n", av_err2str(ret));
-        goto end;
-    }
-
-    /* write the trailer for output stream */
-    if ((ret = av_write_trailer(ofmt_ctx)) < 0)
-        fprintf(stderr, "Failed to write trailer %s\n", av_err2str(ret));
-
-end:
-    avformat_close_input(&ifmt_ctx);
-    avformat_close_input(&ofmt_ctx);
-    avcodec_free_context(&decoder_ctx);
-    avcodec_free_context(&encoder_ctx);
-    av_buffer_unref(&hw_device_ctx);
-    av_packet_free(&dec_pkt);
-    av_freep(&dynamic_setting);
-    return ret;
-}

doc/examples/qsvdec.c

@@ -0,0 +1,487 @@
+/*
+ * Copyright (c) 2015 Anton Khirnov
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * @file
+ * Intel QSV-accelerated H.264 decoding example.
+ *
+ * @example qsvdec.c
+ * This example shows how to do QSV-accelerated H.264 decoding with output
+ * frames in the VA-API video surfaces.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+
+#include <mfx/mfxvideo.h>
+
+#include <va/va.h>
+#include <va/va_x11.h>
+#include <X11/Xlib.h>
+
+#include "libavformat/avformat.h"
+#include "libavformat/avio.h"
+
+#include "libavcodec/avcodec.h"
+#include "libavcodec/qsv.h"
+
+#include "libavutil/error.h"
+#include "libavutil/mem.h"
+
+typedef struct DecodeContext {
+    mfxSession mfx_session;
+    VADisplay va_dpy;
+
+    VASurfaceID *surfaces;
+    mfxMemId    *surface_ids;
+    int         *surface_used;
+    int       nb_surfaces;
+
+    mfxFrameInfo frame_info;
+} DecodeContext;
+
+static mfxStatus frame_alloc(mfxHDL pthis, mfxFrameAllocRequest *req,
+                             mfxFrameAllocResponse *resp)
+{
+    DecodeContext *decode = pthis;
+    int err, i;
+
+    if (decode->surfaces) {
+        fprintf(stderr, "Multiple allocation requests.\n");
+        return MFX_ERR_MEMORY_ALLOC;
+    }
+    if (!(req->Type & MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET)) {
+        fprintf(stderr, "Unsupported surface type: %d\n", req->Type);
+        return MFX_ERR_UNSUPPORTED;
+    }
+    if (req->Info.BitDepthLuma != 8 || req->Info.BitDepthChroma != 8 ||
+        req->Info.Shift || req->Info.FourCC != MFX_FOURCC_NV12 ||
+        req->Info.ChromaFormat != MFX_CHROMAFORMAT_YUV420) {
+        fprintf(stderr, "Unsupported surface properties.\n");
+        return MFX_ERR_UNSUPPORTED;
+    }
+
+    decode->surfaces     = av_malloc_array (req->NumFrameSuggested, sizeof(*decode->surfaces));
+    decode->surface_ids  = av_malloc_array (req->NumFrameSuggested, sizeof(*decode->surface_ids));
+    decode->surface_used = av_mallocz_array(req->NumFrameSuggested, sizeof(*decode->surface_used));
+    if (!decode->surfaces || !decode->surface_ids || !decode->surface_used)
+        goto fail;
+
+    err = vaCreateSurfaces(decode->va_dpy, VA_RT_FORMAT_YUV420,
+                           req->Info.Width, req->Info.Height,
+                           decode->surfaces, req->NumFrameSuggested,
+                           NULL, 0);
+    if (err != VA_STATUS_SUCCESS) {
+        fprintf(stderr, "Error allocating VA surfaces\n");
+        goto fail;
+    }
+    decode->nb_surfaces = req->NumFrameSuggested;
+
+    for (i = 0; i < decode->nb_surfaces; i++)
+        decode->surface_ids[i] = &decode->surfaces[i];
+
+    resp->mids           = decode->surface_ids;
+    resp->NumFrameActual = decode->nb_surfaces;
+
+    decode->frame_info = req->Info;
+
+    return MFX_ERR_NONE;
+fail:
+    av_freep(&decode->surfaces);
+    av_freep(&decode->surface_ids);
+    av_freep(&decode->surface_used);
+
+    return MFX_ERR_MEMORY_ALLOC;
+}
+
+static mfxStatus frame_free(mfxHDL pthis, mfxFrameAllocResponse *resp)
+{
+    return MFX_ERR_NONE;
+}
+
+static mfxStatus frame_lock(mfxHDL pthis, mfxMemId mid, mfxFrameData *ptr)
+{
+    return MFX_ERR_UNSUPPORTED;
+}
+
+static mfxStatus frame_unlock(mfxHDL pthis, mfxMemId mid, mfxFrameData *ptr)
+{
+    return MFX_ERR_UNSUPPORTED;
+}
+
+static mfxStatus frame_get_hdl(mfxHDL pthis, mfxMemId mid, mfxHDL *hdl)
+{
+    *hdl = mid;
+    return MFX_ERR_NONE;
+}
+
+static void free_surfaces(DecodeContext *decode)
+{
+    if (decode->surfaces)
+        vaDestroySurfaces(decode->va_dpy, decode->surfaces, decode->nb_surfaces);
+    av_freep(&decode->surfaces);
+    av_freep(&decode->surface_ids);
+    av_freep(&decode->surface_used);
+    decode->nb_surfaces = 0;
+}
+
+static void free_buffer(void *opaque, uint8_t *data)
+{
+    int *used = opaque;
+    *used = 0;
+    av_freep(&data);
+}
+
+static int get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
+{
+    DecodeContext *decode = avctx->opaque;
+
+    mfxFrameSurface1 *surf;
+    AVBufferRef *surf_buf;
+    int idx;
+
+    for (idx = 0; idx < decode->nb_surfaces; idx++) {
+        if (!decode->surface_used[idx])
+            break;
+    }
+    if (idx == decode->nb_surfaces) {
+        fprintf(stderr, "No free surfaces\n");
+        return AVERROR(ENOMEM);
+    }
+
+    surf = av_mallocz(sizeof(*surf));
+    if (!surf)
+        return AVERROR(ENOMEM);
+    surf_buf = av_buffer_create((uint8_t*)surf, sizeof(*surf), free_buffer,
+                                &decode->surface_used[idx], AV_BUFFER_FLAG_READONLY);
+    if (!surf_buf) {
+        av_freep(&surf);
+        return AVERROR(ENOMEM);
+    }
+
+    surf->Info       = decode->frame_info;
+    surf->Data.MemId = &decode->surfaces[idx];
+
+    frame->buf[0]  = surf_buf;
+    frame->data[3] = (uint8_t*)surf;
+
+    decode->surface_used[idx] = 1;
+
+    return 0;
+}
+
+static int get_format(AVCodecContext *avctx, const enum AVPixelFormat *pix_fmts)
+{
+    while (*pix_fmts != AV_PIX_FMT_NONE) {
+        if (*pix_fmts == AV_PIX_FMT_QSV) {
+            if (!avctx->hwaccel_context) {
+                DecodeContext *decode = avctx->opaque;
+                AVQSVContext *qsv = av_qsv_alloc_context();
+                if (!qsv)
+                    return AV_PIX_FMT_NONE;
+
+                qsv->session   = decode->mfx_session;
+                qsv->iopattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY;
+
+                avctx->hwaccel_context = qsv;
+            }
+
+            return AV_PIX_FMT_QSV;
+        }
+
+        pix_fmts++;
+    }
+
+    fprintf(stderr, "The QSV pixel format not offered in get_format()\n");
+
+    return AV_PIX_FMT_NONE;
+}
+
+static int decode_packet(DecodeContext *decode, AVCodecContext *decoder_ctx,
+                         AVFrame *frame, AVPacket *pkt,
+                         AVIOContext *output_ctx)
+{
+    int ret = 0;
+    int got_frame = 1;
+
+    while (pkt->size > 0 || (!pkt->data && got_frame)) {
+        ret = avcodec_decode_video2(decoder_ctx, frame, &got_frame, pkt);
+        if (ret < 0) {
+            fprintf(stderr, "Error during decoding\n");
+            return ret;
+        }
+
+        pkt->data += ret;
+        pkt->size -= ret;
+
+        /* A real program would do something useful with the decoded frame here.
+         * We just retrieve the raw data and write it to a file, which is rather
+         * useless but pedagogic. */
+        if (got_frame) {
+            mfxFrameSurface1 *surf = (mfxFrameSurface1*)frame->data[3];
+            VASurfaceID    surface = *(VASurfaceID*)surf->Data.MemId;
+
+            VAImageFormat img_fmt = {
+                .fourcc         = VA_FOURCC_NV12,
+                .byte_order     = VA_LSB_FIRST,
+                .bits_per_pixel = 8,
+                .depth          = 8,
+            };
+
+            VAImage img;
+
+            VAStatus err;
+            uint8_t *data;
+            int i, j;
+
+            img.buf      = VA_INVALID_ID;
+            img.image_id = VA_INVALID_ID;
+
+            err = vaCreateImage(decode->va_dpy, &img_fmt,
+                                frame->width, frame->height, &img);
+            if (err != VA_STATUS_SUCCESS) {
+                fprintf(stderr, "Error creating an image: %s\n",
+                        vaErrorStr(err));
+                ret = AVERROR_UNKNOWN;
+                goto fail;
+            }
+
+            err = vaGetImage(decode->va_dpy, surface, 0, 0,
+                             frame->width, frame->height,
+                             img.image_id);
+            if (err != VA_STATUS_SUCCESS) {
+                fprintf(stderr, "Error getting an image: %s\n",
+                        vaErrorStr(err));
+                ret = AVERROR_UNKNOWN;
+                goto fail;
+            }
+
+            err = vaMapBuffer(decode->va_dpy, img.buf, (void**)&data);
+            if (err != VA_STATUS_SUCCESS) {
+                fprintf(stderr, "Error mapping the image buffer: %s\n",
+                        vaErrorStr(err));
+                ret = AVERROR_UNKNOWN;
+                goto fail;
+            }
+
+            for (i = 0; i < img.num_planes; i++)
+                for (j = 0; j < (img.height >> (i > 0)); j++)
+                    avio_write(output_ctx, data + img.offsets[i] + j * img.pitches[i], img.width);
+
+fail:
+            if (img.buf != VA_INVALID_ID)
+                vaUnmapBuffer(decode->va_dpy, img.buf);
+            if (img.image_id != VA_INVALID_ID)
+                vaDestroyImage(decode->va_dpy, img.image_id);
+            av_frame_unref(frame);
+
+            if (ret < 0)
+                return ret;
+        }
+    }
+
+    return 0;
+}
+
+int main(int argc, char **argv)
+{
+    AVFormatContext *input_ctx = NULL;
+    AVStream *video_st = NULL;
+    AVCodecContext *decoder_ctx = NULL;
+    const AVCodec *decoder;
+
+    AVPacket pkt = { 0 };
+    AVFrame *frame = NULL;
+
+    DecodeContext decode = { NULL };
+
+    Display *dpy = NULL;
+    int va_ver_major, va_ver_minor;
+
+    mfxIMPL mfx_impl = MFX_IMPL_AUTO_ANY;
+    mfxVersion mfx_ver = { { 1, 1 } };
+
+    mfxFrameAllocator frame_allocator = {
+        .pthis = &decode,
+        .Alloc = frame_alloc,
+        .Lock  = frame_lock,
+        .Unlock = frame_unlock,
+        .GetHDL = frame_get_hdl,
+        .Free   = frame_free,
+    };
+
+    AVIOContext *output_ctx = NULL;
+
+    int ret, i, err;
+
+    av_register_all();
+
+    if (argc < 3) {
+        fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
+        return 1;
+    }
+
+    /* open the input file */
+    ret = avformat_open_input(&input_ctx, argv[1], NULL, NULL);
+    if (ret < 0) {
+        fprintf(stderr, "Cannot open input file '%s': ", argv[1]);
+        goto finish;
+    }
+
+    /* find the first H.264 video stream */
+    for (i = 0; i < input_ctx->nb_streams; i++) {
+        AVStream *st = input_ctx->streams[i];
+
+        if (st->codecpar->codec_id == AV_CODEC_ID_H264 && !video_st)
+            video_st = st;
+        else
+            st->discard = AVDISCARD_ALL;
+    }
+    if (!video_st) {
+        fprintf(stderr, "No H.264 video stream in the input file\n");
+        goto finish;
+    }
+
+    /* initialize VA-API */
+    dpy = XOpenDisplay(NULL);
+    if (!dpy) {
+        fprintf(stderr, "Cannot open the X display\n");
+        goto finish;
+    }
+    decode.va_dpy = vaGetDisplay(dpy);
+    if (!decode.va_dpy) {
+        fprintf(stderr, "Cannot open the VA display\n");
+        goto finish;
+    }
+
+    err = vaInitialize(decode.va_dpy, &va_ver_major, &va_ver_minor);
+    if (err != VA_STATUS_SUCCESS) {
+        fprintf(stderr, "Cannot initialize VA: %s\n", vaErrorStr(err));
+        goto finish;
+    }
+    fprintf(stderr, "Initialized VA v%d.%d\n", va_ver_major, va_ver_minor);
+
+    /* initialize an MFX session */
+    err = MFXInit(mfx_impl, &mfx_ver, &decode.mfx_session);
+    if (err != MFX_ERR_NONE) {
+        fprintf(stderr, "Error initializing an MFX session\n");
+        goto finish;
+    }
+
+    MFXVideoCORE_SetHandle(decode.mfx_session, MFX_HANDLE_VA_DISPLAY, decode.va_dpy);
+    MFXVideoCORE_SetFrameAllocator(decode.mfx_session, &frame_allocator);
+
+    /* initialize the decoder */
+    decoder = avcodec_find_decoder_by_name("h264_qsv");
+    if (!decoder) {
+        fprintf(stderr, "The QSV decoder is not present in libavcodec\n");
+        goto finish;
+    }
+
+    decoder_ctx = avcodec_alloc_context3(decoder);
+    if (!decoder_ctx) {
+        ret = AVERROR(ENOMEM);
+        goto finish;
+    }
+    decoder_ctx->codec_id = AV_CODEC_ID_H264;
+    if (video_st->codecpar->extradata_size) {
+        decoder_ctx->extradata = av_mallocz(video_st->codecpar->extradata_size +
+                                            AV_INPUT_BUFFER_PADDING_SIZE);
+        if (!decoder_ctx->extradata) {
+            ret = AVERROR(ENOMEM);
+            goto finish;
+        }
+        memcpy(decoder_ctx->extradata, video_st->codecpar->extradata,
+               video_st->codecpar->extradata_size);
+        decoder_ctx->extradata_size = video_st->codecpar->extradata_size;
+    }
+    decoder_ctx->refcounted_frames = 1;
+
+    decoder_ctx->opaque      = &decode;
+    decoder_ctx->get_buffer2 = get_buffer;
+    decoder_ctx->get_format  = get_format;
+
+    ret = avcodec_open2(decoder_ctx, NULL, NULL);
+    if (ret < 0) {
+        fprintf(stderr, "Error opening the decoder: ");
+        goto finish;
+    }
+
+    /* open the output stream */
+    ret = avio_open(&output_ctx, argv[2], AVIO_FLAG_WRITE);
+    if (ret < 0) {
+        fprintf(stderr, "Error opening the output context: ");
+        goto finish;
+    }
+
+    frame = av_frame_alloc();
+    if (!frame) {
+        ret = AVERROR(ENOMEM);
+        goto finish;
+    }
+
+    /* actual decoding */
+    while (ret >= 0) {
+        ret = av_read_frame(input_ctx, &pkt);
+        if (ret < 0)
+            break;
+
+        if (pkt.stream_index == video_st->index)
+            ret = decode_packet(&decode, decoder_ctx, frame, &pkt, output_ctx);
+
+        av_packet_unref(&pkt);
+    }
+
+    /* flush the decoder */
+    pkt.data = NULL;
+    pkt.size = 0;
+    ret = decode_packet(&decode, decoder_ctx, frame, &pkt, output_ctx);
+
+finish:
+    if (ret < 0) {
+        char buf[1024];
+        av_strerror(ret, buf, sizeof(buf));
+        fprintf(stderr, "%s\n", buf);
+    }
+
+    avformat_close_input(&input_ctx);
+
+    av_frame_free(&frame);
+
+    if (decoder_ctx)
+        av_freep(&decoder_ctx->hwaccel_context);
+    avcodec_free_context(&decoder_ctx);
+
+    free_surfaces(&decode);
+
+    if (decode.mfx_session)
+        MFXClose(decode.mfx_session);
+    if (decode.va_dpy)
+        vaTerminate(decode.va_dpy);
+    if (dpy)
+        XCloseDisplay(dpy);
+
+    avio_close(output_ctx);
+
+    return ret;
+}

doc/examples/remuxing.c

@@ -21,11 +21,11 @@
  */
 
 /**
- * @file libavformat/libavcodec demuxing and muxing API usage example
- * @example remux.c
+ * @file
+ * libavformat/libavcodec demuxing and muxing API example.
  *
- * Remux streams from one container format to another. Data is copied from the
- * input to the output without transcoding.
+ * Remux streams from one container format to another.
+ * @example remuxing.c
  */
 
 #include <libavutil/timestamp.h>
@@ -45,9 +45,9 @@ static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt, cons
 
 int main(int argc, char **argv)
 {
-    const AVOutputFormat *ofmt = NULL;
+    AVOutputFormat *ofmt = NULL;
     AVFormatContext *ifmt_ctx = NULL, *ofmt_ctx = NULL;
-    AVPacket *pkt = NULL;
+    AVPacket pkt;
     const char *in_filename, *out_filename;
     int ret, i;
     int stream_index = 0;
@@ -65,11 +65,7 @@ int main(int argc, char **argv)
     in_filename  = argv[1];
     out_filename = argv[2];
 
-    pkt = av_packet_alloc();
-    if (!pkt) {
-        fprintf(stderr, "Could not allocate AVPacket\n");
-        return 1;
-    }
+    av_register_all();
 
     if ((ret = avformat_open_input(&ifmt_ctx, in_filename, 0, 0)) < 0) {
         fprintf(stderr, "Could not open input file '%s'", in_filename);
@@ -91,7 +87,7 @@ int main(int argc, char **argv)
     }
 
     stream_mapping_size = ifmt_ctx->nb_streams;
-    stream_mapping = av_calloc(stream_mapping_size, sizeof(*stream_mapping));
+    stream_mapping = av_mallocz_array(stream_mapping_size, sizeof(*stream_mapping));
     if (!stream_mapping) {
         ret = AVERROR(ENOMEM);
         goto end;
@@ -146,39 +142,38 @@ int main(int argc, char **argv)
     while (1) {
         AVStream *in_stream, *out_stream;
 
-        ret = av_read_frame(ifmt_ctx, pkt);
+        ret = av_read_frame(ifmt_ctx, &pkt);
         if (ret < 0)
             break;
 
-        in_stream  = ifmt_ctx->streams[pkt->stream_index];
-        if (pkt->stream_index >= stream_mapping_size ||
-            stream_mapping[pkt->stream_index] < 0) {
-            av_packet_unref(pkt);
+        in_stream  = ifmt_ctx->streams[pkt.stream_index];
+        if (pkt.stream_index >= stream_mapping_size ||
+            stream_mapping[pkt.stream_index] < 0) {
+            av_packet_unref(&pkt);
             continue;
         }
 
-        pkt->stream_index = stream_mapping[pkt->stream_index];
-        out_stream = ofmt_ctx->streams[pkt->stream_index];
-        log_packet(ifmt_ctx, pkt, "in");
+        pkt.stream_index = stream_mapping[pkt.stream_index];
+        out_stream = ofmt_ctx->streams[pkt.stream_index];
+        log_packet(ifmt_ctx, &pkt, "in");
 
         /* copy packet */
-        av_packet_rescale_ts(pkt, in_stream->time_base, out_stream->time_base);
-        pkt->pos = -1;
-        log_packet(ofmt_ctx, pkt, "out");
+        pkt.pts = av_rescale_q_rnd(pkt.pts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
+        pkt.dts = av_rescale_q_rnd(pkt.dts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
+        pkt.duration = av_rescale_q(pkt.duration, in_stream->time_base, out_stream->time_base);
+        pkt.pos = -1;
+        log_packet(ofmt_ctx, &pkt, "out");
 
-        ret = av_interleaved_write_frame(ofmt_ctx, pkt);
-        /* pkt is now blank (av_interleaved_write_frame() takes ownership of
-         * its contents and resets pkt), so that no unreferencing is necessary.
-         * This would be different if one used av_write_frame(). */
+        ret = av_interleaved_write_frame(ofmt_ctx, &pkt);
         if (ret < 0) {
             fprintf(stderr, "Error muxing packet\n");
             break;
         }
+        av_packet_unref(&pkt);
     }
 
     av_write_trailer(ofmt_ctx);
 end:
-    av_packet_free(&pkt);
 
     avformat_close_input(&ifmt_ctx);
 

doc/examples/resampling_audio.c

@@ -21,12 +21,8 @@
  */
 
 /**
- * @file audio resampling API usage example
- * @example resample_audio.c
- *
- * Generate a synthetic audio signal, and Use libswresample API to perform audio
- * resampling. The output is written to a raw audio file to be played with
- * ffplay.
+ * @example resampling_audio.c
+ * libswresample API use example.
  */
 
 #include <libavutil/opt.h>
@@ -84,7 +80,7 @@ static void fill_samples(double *dst, int nb_samples, int nb_channels, int sampl
 
 int main(int argc, char **argv)
 {
-    AVChannelLayout src_ch_layout = AV_CHANNEL_LAYOUT_STEREO, dst_ch_layout = AV_CHANNEL_LAYOUT_SURROUND;
+    int64_t src_ch_layout = AV_CH_LAYOUT_STEREO, dst_ch_layout = AV_CH_LAYOUT_SURROUND;
     int src_rate = 48000, dst_rate = 44100;
     uint8_t **src_data = NULL, **dst_data = NULL;
     int src_nb_channels = 0, dst_nb_channels = 0;
@@ -96,7 +92,6 @@ int main(int argc, char **argv)
     int dst_bufsize;
     const char *fmt;
     struct SwrContext *swr_ctx;
-    char buf[64];
     double t;
     int ret;
 
@@ -125,11 +120,11 @@ int main(int argc, char **argv)
     }
 
     /* set options */
-    av_opt_set_chlayout(swr_ctx, "in_chlayout",    &src_ch_layout, 0);
+    av_opt_set_int(swr_ctx, "in_channel_layout",    src_ch_layout, 0);
     av_opt_set_int(swr_ctx, "in_sample_rate",       src_rate, 0);
     av_opt_set_sample_fmt(swr_ctx, "in_sample_fmt", src_sample_fmt, 0);
 
-    av_opt_set_chlayout(swr_ctx, "out_chlayout",    &dst_ch_layout, 0);
+    av_opt_set_int(swr_ctx, "out_channel_layout",    dst_ch_layout, 0);
     av_opt_set_int(swr_ctx, "out_sample_rate",       dst_rate, 0);
     av_opt_set_sample_fmt(swr_ctx, "out_sample_fmt", dst_sample_fmt, 0);
 
@@ -141,7 +136,7 @@ int main(int argc, char **argv)
 
     /* allocate source and destination samples buffers */
 
-    src_nb_channels = src_ch_layout.nb_channels;
+    src_nb_channels = av_get_channel_layout_nb_channels(src_ch_layout);
     ret = av_samples_alloc_array_and_samples(&src_data, &src_linesize, src_nb_channels,
                                              src_nb_samples, src_sample_fmt, 0);
     if (ret < 0) {
@@ -156,7 +151,7 @@ int main(int argc, char **argv)
         av_rescale_rnd(src_nb_samples, dst_rate, src_rate, AV_ROUND_UP);
 
     /* buffer is going to be directly written to a rawaudio file, no alignment */
-    dst_nb_channels = dst_ch_layout.nb_channels;
+    dst_nb_channels = av_get_channel_layout_nb_channels(dst_ch_layout);
     ret = av_samples_alloc_array_and_samples(&dst_data, &dst_linesize, dst_nb_channels,
                                              dst_nb_samples, dst_sample_fmt, 0);
     if (ret < 0) {
@@ -199,10 +194,9 @@ int main(int argc, char **argv)
 
     if ((ret = get_format_from_sample_fmt(&fmt, dst_sample_fmt)) < 0)
         goto end;
-    av_channel_layout_describe(&dst_ch_layout, buf, sizeof(buf));
     fprintf(stderr, "Resampling succeeded. Play the output file with the command:\n"
-            "ffplay -f %s -channel_layout %s -channels %d -ar %d %s\n",
-            fmt, buf, dst_nb_channels, dst_rate, dst_filename);
+            "ffplay -f %s -channel_layout %"PRId64" -channels %d -ar %d %s\n",
+            fmt, dst_ch_layout, dst_nb_channels, dst_rate, dst_filename);
 
 end:
     fclose(dst_file);

doc/examples/scaling_video.c

@@ -21,10 +21,9 @@
  */
 
 /**
- * @file libswscale API usage example
- * @example scale_video.c
- *
- * Generate a synthetic video signal and use libswscale to perform rescaling.
+ * @file
+ * libswscale API use example.
+ * @example scaling_video.c
  */
 
 #include <libavutil/imgutils.h>

doc/examples/transcode_aac.c

@@ -1,6 +1,4 @@
 /*
- * Copyright (c) 2013-2022 Andreas Unterweger
- *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -10,7 +8,7 @@
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
@@ -19,11 +17,11 @@
  */
 
 /**
- * @file audio transcoding to MPEG/AAC API usage example
- * @example transcode_aac.c
+ * @file
+ * simple audio converter
  *
- * Convert an input audio file to AAC in an MP4 container. Formats other than
- * MP4 are supported based on the output file extension.
+ * @example transcode_aac.c
+ * Convert an input audio file to AAC in an MP4 container using FFmpeg.
  * @author Andreas Unterweger (dustsigns@gmail.com)
  */
 
@@ -37,34 +35,26 @@
 #include "libavutil/audio_fifo.h"
 #include "libavutil/avassert.h"
 #include "libavutil/avstring.h"
-#include "libavutil/channel_layout.h"
 #include "libavutil/frame.h"
 #include "libavutil/opt.h"
 
 #include "libswresample/swresample.h"
 
-/* The output bit rate in bit/s */
+/** The output bit rate in kbit/s */
 #define OUTPUT_BIT_RATE 96000
-/* The number of output channels */
+/** The number of output channels */
 #define OUTPUT_CHANNELS 2
 
-/**
- * Open an input file and the required decoder.
- * @param      filename             File to be opened
- * @param[out] input_format_context Format context of opened file
- * @param[out] input_codec_context  Codec context of opened file
- * @return Error code (0 if successful)
- */
+/** Open an input file and the required decoder. */
 static int open_input_file(const char *filename,
                            AVFormatContext **input_format_context,
                            AVCodecContext **input_codec_context)
 {
     AVCodecContext *avctx;
-    const AVCodec *input_codec;
-    const AVStream *stream;
+    AVCodec *input_codec;
     int error;
 
-    /* Open the input file to read from it. */
+    /** Open the input file to read from it. */
     if ((error = avformat_open_input(input_format_context, filename, NULL,
                                      NULL)) < 0) {
         fprintf(stderr, "Could not open input file '%s' (error '%s')\n",
@@ -73,7 +63,7 @@ static int open_input_file(const char *filename,
         return error;
     }
 
-    /* Get information on the input file (number of streams etc.). */
+    /** Get information on the input file (number of streams etc.). */
     if ((error = avformat_find_stream_info(*input_format_context, NULL)) < 0) {
         fprintf(stderr, "Could not open find stream info (error '%s')\n",
                 av_err2str(error));
@@ -81,7 +71,7 @@ static int open_input_file(const char *filename,
         return error;
     }
 
-    /* Make sure that there is only one stream in the input file. */
+    /** Make sure that there is only one stream in the input file. */
     if ((*input_format_context)->nb_streams != 1) {
         fprintf(stderr, "Expected one audio input stream, but found %d\n",
                 (*input_format_context)->nb_streams);
@@ -89,16 +79,14 @@ static int open_input_file(const char *filename,
         return AVERROR_EXIT;
     }
 
-    stream = (*input_format_context)->streams[0];
-
-    /* Find a decoder for the audio stream. */
-    if (!(input_codec = avcodec_find_decoder(stream->codecpar->codec_id))) {
+    /** Find a decoder for the audio stream. */
+    if (!(input_codec = avcodec_find_decoder((*input_format_context)->streams[0]->codecpar->codec_id))) {
         fprintf(stderr, "Could not find input codec\n");
         avformat_close_input(input_format_context);
         return AVERROR_EXIT;
     }
 
-    /* Allocate a new decoding context. */
+    /** allocate a new decoding context */
     avctx = avcodec_alloc_context3(input_codec);
     if (!avctx) {
         fprintf(stderr, "Could not allocate a decoding context\n");
@@ -106,15 +94,15 @@ static int open_input_file(const char *filename,
         return AVERROR(ENOMEM);
     }
 
-    /* Initialize the stream parameters with demuxer information. */
-    error = avcodec_parameters_to_context(avctx, stream->codecpar);
+    /** initialize the stream parameters with demuxer information */
+    error = avcodec_parameters_to_context(avctx, (*input_format_context)->streams[0]->codecpar);
     if (error < 0) {
         avformat_close_input(input_format_context);
         avcodec_free_context(&avctx);
         return error;
     }
 
-    /* Open the decoder for the audio stream to use it later. */
+    /** Open the decoder for the audio stream to use it later. */
     if ((error = avcodec_open2(avctx, input_codec, NULL)) < 0) {
         fprintf(stderr, "Could not open input codec (error '%s')\n",
                 av_err2str(error));
@@ -123,10 +111,7 @@ static int open_input_file(const char *filename,
         return error;
     }
 
-    /* Set the packet timebase for the decoder. */
-    avctx->pkt_timebase = stream->time_base;
-
-    /* Save the decoder context for easier access later. */
+    /** Save the decoder context for easier access later. */
     *input_codec_context = avctx;
 
     return 0;
@@ -136,11 +121,6 @@ static int open_input_file(const char *filename,
  * Open an output file and the required encoder.
  * Also set some basic encoder parameters.
  * Some of these parameters are based on the input file's parameters.
- * @param      filename              File to be opened
- * @param      input_codec_context   Codec context of input file
- * @param[out] output_format_context Format context of output file
- * @param[out] output_codec_context  Codec context of output file
- * @return Error code (0 if successful)
  */
 static int open_output_file(const char *filename,
                             AVCodecContext *input_codec_context,
@@ -150,10 +130,10 @@ static int open_output_file(const char *filename,
     AVCodecContext *avctx          = NULL;
     AVIOContext *output_io_context = NULL;
     AVStream *stream               = NULL;
-    const AVCodec *output_codec    = NULL;
+    AVCodec *output_codec          = NULL;
     int error;
 
-    /* Open the output file to write to it. */
+    /** Open the output file to write to it. */
     if ((error = avio_open(&output_io_context, filename,
                            AVIO_FLAG_WRITE)) < 0) {
         fprintf(stderr, "Could not open output file '%s' (error '%s')\n",
@@ -161,35 +141,32 @@ static int open_output_file(const char *filename,
         return error;
     }
 
-    /* Create a new format context for the output container format. */
+    /** Create a new format context for the output container format. */
     if (!(*output_format_context = avformat_alloc_context())) {
         fprintf(stderr, "Could not allocate output format context\n");
         return AVERROR(ENOMEM);
     }
 
-    /* Associate the output file (pointer) with the container format context. */
+    /** Associate the output file (pointer) with the container format context. */
     (*output_format_context)->pb = output_io_context;
 
-    /* Guess the desired container format based on the file extension. */
+    /** Guess the desired container format based on the file extension. */
     if (!((*output_format_context)->oformat = av_guess_format(NULL, filename,
                                                               NULL))) {
         fprintf(stderr, "Could not find output file format\n");
         goto cleanup;
     }
 
-    if (!((*output_format_context)->url = av_strdup(filename))) {
-        fprintf(stderr, "Could not allocate url.\n");
-        error = AVERROR(ENOMEM);
-        goto cleanup;
-    }
+    av_strlcpy((*output_format_context)->filename, filename,
+               sizeof((*output_format_context)->filename));
 
-    /* Find the encoder to be used by its name. */
+    /** Find the encoder to be used by its name. */
     if (!(output_codec = avcodec_find_encoder(AV_CODEC_ID_AAC))) {
         fprintf(stderr, "Could not find an AAC encoder.\n");
         goto cleanup;
     }
 
-    /* Create a new audio stream in the output file container. */
+    /** Create a new audio stream in the output file container. */
     if (!(stream = avformat_new_stream(*output_format_context, NULL))) {
         fprintf(stderr, "Could not create new stream\n");
         error = AVERROR(ENOMEM);
@@ -203,23 +180,31 @@ static int open_output_file(const char *filename,
         goto cleanup;
     }
 
-    /* Set the basic encoder parameters.
-     * The input file's sample rate is used to avoid a sample rate conversion. */
-    av_channel_layout_default(&avctx->ch_layout, OUTPUT_CHANNELS);
+    /**
+     * Set the basic encoder parameters.
+     * The input file's sample rate is used to avoid a sample rate conversion.
+     */
+    avctx->channels       = OUTPUT_CHANNELS;
+    avctx->channel_layout = av_get_default_channel_layout(OUTPUT_CHANNELS);
     avctx->sample_rate    = input_codec_context->sample_rate;
     avctx->sample_fmt     = output_codec->sample_fmts[0];
     avctx->bit_rate       = OUTPUT_BIT_RATE;
 
-    /* Set the sample rate for the container. */
+    /** Allow the use of the experimental AAC encoder */
+    avctx->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
+
+    /** Set the sample rate for the container. */
     stream->time_base.den = input_codec_context->sample_rate;
     stream->time_base.num = 1;
 
-    /* Some container formats (like MP4) require global headers to be present.
-     * Mark the encoder so that it behaves accordingly. */
+    /**
+     * Some container formats (like MP4) require global headers to be present
+     * Mark the encoder so that it behaves accordingly.
+     */
     if ((*output_format_context)->oformat->flags & AVFMT_GLOBALHEADER)
         avctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
 
-    /* Open the encoder for the audio stream to use it later. */
+    /** Open the encoder for the audio stream to use it later. */
     if ((error = avcodec_open2(avctx, output_codec, NULL)) < 0) {
         fprintf(stderr, "Could not open output codec (error '%s')\n",
                 av_err2str(error));
@@ -232,7 +217,7 @@ static int open_output_file(const char *filename,
         goto cleanup;
     }
 
-    /* Save the encoder context for easier access later. */
+    /** Save the encoder context for easier access later. */
     *output_codec_context = avctx;
 
     return 0;
@@ -245,25 +230,16 @@ cleanup:
     return error < 0 ? error : AVERROR_EXIT;
 }
 
-/**
- * Initialize one data packet for reading or writing.
- * @param[out] packet Packet to be initialized
- * @return Error code (0 if successful)
- */
-static int init_packet(AVPacket **packet)
+/** Initialize one data packet for reading or writing. */
+static void init_packet(AVPacket *packet)
 {
-    if (!(*packet = av_packet_alloc())) {
-        fprintf(stderr, "Could not allocate packet\n");
-        return AVERROR(ENOMEM);
-    }
-    return 0;
+    av_init_packet(packet);
+    /** Set the packet data and size so that it is recognized as being empty. */
+    packet->data = NULL;
+    packet->size = 0;
 }
 
-/**
- * Initialize one audio frame for reading from the input file.
- * @param[out] frame Frame to be initialized
- * @return Error code (0 if successful)
- */
+/** Initialize one audio frame for reading from the input file */
 static int init_input_frame(AVFrame **frame)
 {
     if (!(*frame = av_frame_alloc())) {
@@ -277,10 +253,6 @@ static int init_input_frame(AVFrame **frame)
  * Initialize the audio resampler based on the input and output codec settings.
  * If the input and output sample formats differ, a conversion is required
  * libswresample takes care of this, but requires initialization.
- * @param      input_codec_context  Codec context of the input file
- * @param      output_codec_context Codec context of the output file
- * @param[out] resample_context     Resample context for the required conversion
- * @return Error code (0 if successful)
  */
 static int init_resampler(AVCodecContext *input_codec_context,
                           AVCodecContext *output_codec_context,
@@ -288,30 +260,33 @@ static int init_resampler(AVCodecContext *input_codec_context,
 {
         int error;
 
-        /*
+        /**
          * Create a resampler context for the conversion.
          * Set the conversion parameters.
+         * Default channel layouts based on the number of channels
+         * are assumed for simplicity (they are sometimes not detected
+         * properly by the demuxer and/or decoder).
          */
-        error = swr_alloc_set_opts2(resample_context,
-                                             &output_codec_context->ch_layout,
+        *resample_context = swr_alloc_set_opts(NULL,
+                                              av_get_default_channel_layout(output_codec_context->channels),
                                               output_codec_context->sample_fmt,
                                               output_codec_context->sample_rate,
-                                             &input_codec_context->ch_layout,
+                                              av_get_default_channel_layout(input_codec_context->channels),
                                               input_codec_context->sample_fmt,
                                               input_codec_context->sample_rate,
                                               0, NULL);
-        if (error < 0) {
+        if (!*resample_context) {
             fprintf(stderr, "Could not allocate resample context\n");
-            return error;
+            return AVERROR(ENOMEM);
         }
-        /*
+        /**
         * Perform a sanity check so that the number of converted samples is
         * not greater than the number of samples to be converted.
         * If the sample rates differ, this case has to be handled differently
         */
         av_assert0(output_codec_context->sample_rate == input_codec_context->sample_rate);
 
-        /* Open the resampler with the specified parameters. */
+        /** Open the resampler with the specified parameters. */
         if ((error = swr_init(*resample_context)) < 0) {
             fprintf(stderr, "Could not open resample context\n");
             swr_free(resample_context);
@@ -320,28 +295,19 @@ static int init_resampler(AVCodecContext *input_codec_context,
     return 0;
 }
 
-/**
- * Initialize a FIFO buffer for the audio samples to be encoded.
- * @param[out] fifo                 Sample buffer
- * @param      output_codec_context Codec context of the output file
- * @return Error code (0 if successful)
- */
+/** Initialize a FIFO buffer for the audio samples to be encoded. */
 static int init_fifo(AVAudioFifo **fifo, AVCodecContext *output_codec_context)
 {
-    /* Create the FIFO buffer based on the specified output sample format. */
+    /** Create the FIFO buffer based on the specified output sample format. */
     if (!(*fifo = av_audio_fifo_alloc(output_codec_context->sample_fmt,
-                                      output_codec_context->ch_layout.nb_channels, 1))) {
+                                      output_codec_context->channels, 1))) {
         fprintf(stderr, "Could not allocate FIFO\n");
         return AVERROR(ENOMEM);
     }
     return 0;
 }
 
-/**
- * Write the header of the output file container.
- * @param output_format_context Format context of the output file
- * @return Error code (0 if successful)
- */
+/** Write the header of the output file container. */
 static int write_output_file_header(AVFormatContext *output_format_context)
 {
     int error;
@@ -353,92 +319,57 @@ static int write_output_file_header(AVFormatContext *output_format_context)
     return 0;
 }
 
-/**
- * Decode one audio frame from the input file.
- * @param      frame                Audio frame to be decoded
- * @param      input_format_context Format context of the input file
- * @param      input_codec_context  Codec context of the input file
- * @param[out] data_present         Indicates whether data has been decoded
- * @param[out] finished             Indicates whether the end of file has
- *                                  been reached and all data has been
- *                                  decoded. If this flag is false, there
- *                                  is more data to be decoded, i.e., this
- *                                  function has to be called again.
- * @return Error code (0 if successful)
- */
+/** Decode one audio frame from the input file. */
 static int decode_audio_frame(AVFrame *frame,
                               AVFormatContext *input_format_context,
                               AVCodecContext *input_codec_context,
                               int *data_present, int *finished)
 {
-    /* Packet used for temporary storage. */
-    AVPacket *input_packet;
+    /** Packet used for temporary storage. */
+    AVPacket input_packet;
     int error;
+    init_packet(&input_packet);
 
-    error = init_packet(&input_packet);
-    if (error < 0)
-        return error;
-
-    *data_present = 0;
-    *finished = 0;
-    /* Read one audio frame from the input file into a temporary packet. */
-    if ((error = av_read_frame(input_format_context, input_packet)) < 0) {
-        /* If we are at the end of the file, flush the decoder below. */
+    /** Read one audio frame from the input file into a temporary packet. */
+    if ((error = av_read_frame(input_format_context, &input_packet)) < 0) {
+        /** If we are at the end of the file, flush the decoder below. */
         if (error == AVERROR_EOF)
             *finished = 1;
         else {
             fprintf(stderr, "Could not read frame (error '%s')\n",
                     av_err2str(error));
-            goto cleanup;
+            return error;
         }
     }
 
-    /* Send the audio frame stored in the temporary packet to the decoder.
-     * The input audio stream decoder is used to do this. */
-    if ((error = avcodec_send_packet(input_codec_context, input_packet)) < 0) {
-        fprintf(stderr, "Could not send packet for decoding (error '%s')\n",
-                av_err2str(error));
-        goto cleanup;
-    }
-
-    /* Receive one frame from the decoder. */
-    error = avcodec_receive_frame(input_codec_context, frame);
-    /* If the decoder asks for more data to be able to decode a frame,
-     * return indicating that no data is present. */
-    if (error == AVERROR(EAGAIN)) {
-        error = 0;
-        goto cleanup;
-    /* If the end of the input file is reached, stop decoding. */
-    } else if (error == AVERROR_EOF) {
-        *finished = 1;
-        error = 0;
-        goto cleanup;
-    } else if (error < 0) {
+    /**
+     * Decode the audio frame stored in the temporary packet.
+     * The input audio stream decoder is used to do this.
+     * If we are at the end of the file, pass an empty packet to the decoder
+     * to flush it.
+     */
+    if ((error = avcodec_decode_audio4(input_codec_context, frame,
+                                       data_present, &input_packet)) < 0) {
         fprintf(stderr, "Could not decode frame (error '%s')\n",
                 av_err2str(error));
-        goto cleanup;
-    /* Default case: Return decoded data. */
-    } else {
-        *data_present = 1;
-        goto cleanup;
+        av_packet_unref(&input_packet);
+        return error;
     }
 
-cleanup:
-    av_packet_free(&input_packet);
-    return error;
+    /**
+     * If the decoder has not been flushed completely, we are not finished,
+     * so that this function has to be called again.
+     */
+    if (*finished && *data_present)
+        *finished = 0;
+    av_packet_unref(&input_packet);
+    return 0;
 }
 
 /**
  * Initialize a temporary storage for the specified number of audio samples.
  * The conversion requires temporary storage due to the different format.
  * The number of audio samples to be allocated is specified in frame_size.
- * @param[out] converted_input_samples Array of converted samples. The
- *                                     dimensions are reference, channel
- *                                     (for multi-channel audio), sample.
- * @param      output_codec_context    Codec context of the output file
- * @param      frame_size              Number of samples to be converted in
- *                                     each round
- * @return Error code (0 if successful)
  */
 static int init_converted_samples(uint8_t ***converted_input_samples,
                                   AVCodecContext *output_codec_context,
@@ -446,18 +377,30 @@ static int init_converted_samples(uint8_t ***converted_input_samples,
 {
     int error;
 
-    /* Allocate as many pointers as there are audio channels.
-     * Each pointer will point to the audio samples of the corresponding
+    /**
+     * Allocate as many pointers as there are audio channels.
+     * Each pointer will later point to the audio samples of the corresponding
      * channels (although it may be NULL for interleaved formats).
+     */
+    if (!(*converted_input_samples = calloc(output_codec_context->channels,
+                                            sizeof(**converted_input_samples)))) {
+        fprintf(stderr, "Could not allocate converted input sample pointers\n");
+        return AVERROR(ENOMEM);
+    }
+
+    /**
      * Allocate memory for the samples of all channels in one consecutive
-     * block for convenience. */
-    if ((error = av_samples_alloc_array_and_samples(converted_input_samples, NULL,
-                                  output_codec_context->ch_layout.nb_channels,
+     * block for convenience.
+     */
+    if ((error = av_samples_alloc(*converted_input_samples, NULL,
+                                  output_codec_context->channels,
                                   frame_size,
                                   output_codec_context->sample_fmt, 0)) < 0) {
         fprintf(stderr,
                 "Could not allocate converted input samples (error '%s')\n",
                 av_err2str(error));
+        av_freep(&(*converted_input_samples)[0]);
+        free(*converted_input_samples);
         return error;
     }
     return 0;
@@ -465,15 +408,8 @@ static int init_converted_samples(uint8_t ***converted_input_samples,
 
 /**
  * Convert the input audio samples into the output sample format.
- * The conversion happens on a per-frame basis, the size of which is
- * specified by frame_size.
- * @param      input_data       Samples to be decoded. The dimensions are
- *                              channel (for multi-channel audio), sample.
- * @param[out] converted_data   Converted samples. The dimensions are channel
- *                              (for multi-channel audio), sample.
- * @param      frame_size       Number of samples to be converted
- * @param      resample_context Resample context for the conversion
- * @return Error code (0 if successful)
+ * The conversion happens on a per-frame basis, the size of which is specified
+ * by frame_size.
  */
 static int convert_samples(const uint8_t **input_data,
                            uint8_t **converted_data, const int frame_size,
@@ -481,7 +417,7 @@ static int convert_samples(const uint8_t **input_data,
 {
     int error;
 
-    /* Convert the samples using the resampler. */
+    /** Convert the samples using the resampler. */
     if ((error = swr_convert(resample_context,
                              converted_data, frame_size,
                              input_data    , frame_size)) < 0) {
@@ -493,28 +429,23 @@ static int convert_samples(const uint8_t **input_data,
     return 0;
 }
 
-/**
- * Add converted input audio samples to the FIFO buffer for later processing.
- * @param fifo                    Buffer to add the samples to
- * @param converted_input_samples Samples to be added. The dimensions are channel
- *                                (for multi-channel audio), sample.
- * @param frame_size              Number of samples to be converted
- * @return Error code (0 if successful)
- */
+/** Add converted input audio samples to the FIFO buffer for later processing. */
 static int add_samples_to_fifo(AVAudioFifo *fifo,
                                uint8_t **converted_input_samples,
                                const int frame_size)
 {
     int error;
 
-    /* Make the FIFO as large as it needs to be to hold both,
-     * the old and the new samples. */
+    /**
+     * Make the FIFO as large as it needs to be to hold both,
+     * the old and the new samples.
+     */
     if ((error = av_audio_fifo_realloc(fifo, av_audio_fifo_size(fifo) + frame_size)) < 0) {
         fprintf(stderr, "Could not reallocate FIFO\n");
         return error;
     }
 
-    /* Store the new samples in the FIFO buffer. */
+    /** Store the new samples in the FIFO buffer. */
     if (av_audio_fifo_write(fifo, (void **)converted_input_samples,
                             frame_size) < frame_size) {
         fprintf(stderr, "Could not write data to FIFO\n");
@@ -524,20 +455,8 @@ static int add_samples_to_fifo(AVAudioFifo *fifo,
 }
 
 /**
- * Read one audio frame from the input file, decode, convert and store
+ * Read one audio frame from the input file, decodes, converts and stores
  * it in the FIFO buffer.
- * @param      fifo                 Buffer used for temporary storage
- * @param      input_format_context Format context of the input file
- * @param      input_codec_context  Codec context of the input file
- * @param      output_codec_context Codec context of the output file
- * @param      resampler_context    Resample context for the conversion
- * @param[out] finished             Indicates whether the end of file has
- *                                  been reached and all data has been
- *                                  decoded. If this flag is false,
- *                                  there is more data to be decoded,
- *                                  i.e., this function has to be called
- *                                  again.
- * @return Error code (0 if successful)
  */
 static int read_decode_convert_and_store(AVAudioFifo *fifo,
                                          AVFormatContext *input_format_context,
@@ -546,41 +465,45 @@ static int read_decode_convert_and_store(AVAudioFifo *fifo,
                                          SwrContext *resampler_context,
                                          int *finished)
 {
-    /* Temporary storage of the input samples of the frame read from the file. */
+    /** Temporary storage of the input samples of the frame read from the file. */
     AVFrame *input_frame = NULL;
-    /* Temporary storage for the converted input samples. */
+    /** Temporary storage for the converted input samples. */
     uint8_t **converted_input_samples = NULL;
     int data_present;
     int ret = AVERROR_EXIT;
 
-    /* Initialize temporary storage for one input frame. */
+    /** Initialize temporary storage for one input frame. */
     if (init_input_frame(&input_frame))
         goto cleanup;
-    /* Decode one frame worth of audio samples. */
+    /** Decode one frame worth of audio samples. */
     if (decode_audio_frame(input_frame, input_format_context,
                            input_codec_context, &data_present, finished))
         goto cleanup;
-    /* If we are at the end of the file and there are no more samples
+    /**
+     * If we are at the end of the file and there are no more samples
      * in the decoder which are delayed, we are actually finished.
-     * This must not be treated as an error. */
-    if (*finished) {
+     * This must not be treated as an error.
+     */
+    if (*finished && !data_present) {
         ret = 0;
         goto cleanup;
     }
-    /* If there is decoded data, convert and store it. */
+    /** If there is decoded data, convert and store it */
     if (data_present) {
-        /* Initialize the temporary storage for the converted input samples. */
+        /** Initialize the temporary storage for the converted input samples. */
         if (init_converted_samples(&converted_input_samples, output_codec_context,
                                    input_frame->nb_samples))
             goto cleanup;
 
-        /* Convert the input samples to the desired output sample format.
-         * This requires a temporary storage provided by converted_input_samples. */
+        /**
+         * Convert the input samples to the desired output sample format.
+         * This requires a temporary storage provided by converted_input_samples.
+         */
         if (convert_samples((const uint8_t**)input_frame->extended_data, converted_input_samples,
                             input_frame->nb_samples, resampler_context))
             goto cleanup;
 
-        /* Add the converted input samples to the FIFO buffer for later processing. */
+        /** Add the converted input samples to the FIFO buffer for later processing. */
         if (add_samples_to_fifo(fifo, converted_input_samples,
                                 input_frame->nb_samples))
             goto cleanup;
@@ -589,9 +512,10 @@ static int read_decode_convert_and_store(AVAudioFifo *fifo,
     ret = 0;
 
 cleanup:
-    if (converted_input_samples)
+    if (converted_input_samples) {
         av_freep(&converted_input_samples[0]);
-    av_freep(&converted_input_samples);
+        free(converted_input_samples);
+    }
     av_frame_free(&input_frame);
 
     return ret;
@@ -600,10 +524,6 @@ cleanup:
 /**
  * Initialize one input frame for writing to the output file.
  * The frame will be exactly frame_size samples large.
- * @param[out] frame                Frame to be initialized
- * @param      output_codec_context Codec context of the output file
- * @param      frame_size           Size of the frame
- * @return Error code (0 if successful)
  */
 static int init_output_frame(AVFrame **frame,
                              AVCodecContext *output_codec_context,
@@ -611,24 +531,28 @@ static int init_output_frame(AVFrame **frame,
 {
     int error;
 
-    /* Create a new frame to store the audio samples. */
+    /** Create a new frame to store the audio samples. */
     if (!(*frame = av_frame_alloc())) {
         fprintf(stderr, "Could not allocate output frame\n");
         return AVERROR_EXIT;
     }
 
-    /* Set the frame's parameters, especially its size and format.
+    /**
+     * Set the frame's parameters, especially its size and format.
      * av_frame_get_buffer needs this to allocate memory for the
      * audio samples of the frame.
      * Default channel layouts based on the number of channels
-     * are assumed for simplicity. */
+     * are assumed for simplicity.
+     */
     (*frame)->nb_samples     = frame_size;
-    av_channel_layout_copy(&(*frame)->ch_layout, &output_codec_context->ch_layout);
+    (*frame)->channel_layout = output_codec_context->channel_layout;
     (*frame)->format         = output_codec_context->sample_fmt;
     (*frame)->sample_rate    = output_codec_context->sample_rate;
 
-    /* Allocate the samples of the created frame. This call will make
-     * sure that the audio frame can hold as many samples as specified. */
+    /**
+     * Allocate the samples of the created frame. This call will make
+     * sure that the audio frame can hold as many samples as specified.
+     */
     if ((error = av_frame_get_buffer(*frame, 0)) < 0) {
         fprintf(stderr, "Could not allocate output frame samples (error '%s')\n",
                 av_err2str(error));
@@ -639,116 +563,87 @@ static int init_output_frame(AVFrame **frame,
     return 0;
 }
 
-/* Global timestamp for the audio frames. */
+/** Global timestamp for the audio frames */
 static int64_t pts = 0;
 
-/**
- * Encode one frame worth of audio to the output file.
- * @param      frame                 Samples to be encoded
- * @param      output_format_context Format context of the output file
- * @param      output_codec_context  Codec context of the output file
- * @param[out] data_present          Indicates whether data has been
- *                                   encoded
- * @return Error code (0 if successful)
- */
+/** Encode one frame worth of audio to the output file. */
 static int encode_audio_frame(AVFrame *frame,
                               AVFormatContext *output_format_context,
                               AVCodecContext *output_codec_context,
                               int *data_present)
 {
-    /* Packet used for temporary storage. */
-    AVPacket *output_packet;
+    /** Packet used for temporary storage. */
+    AVPacket output_packet;
     int error;
+    init_packet(&output_packet);
 
-    error = init_packet(&output_packet);
-    if (error < 0)
-        return error;
-
-    /* Set a timestamp based on the sample rate for the container. */
+    /** Set a timestamp based on the sample rate for the container. */
     if (frame) {
         frame->pts = pts;
         pts += frame->nb_samples;
     }
 
-    *data_present = 0;
-    /* Send the audio frame stored in the temporary packet to the encoder.
-     * The output audio stream encoder is used to do this. */
-    error = avcodec_send_frame(output_codec_context, frame);
-    /* Check for errors, but proceed with fetching encoded samples if the
-     *  encoder signals that it has nothing more to encode. */
-    if (error < 0 && error != AVERROR_EOF) {
-      fprintf(stderr, "Could not send packet for encoding (error '%s')\n",
-              av_err2str(error));
-      goto cleanup;
-    }
-
-    /* Receive one encoded frame from the encoder. */
-    error = avcodec_receive_packet(output_codec_context, output_packet);
-    /* If the encoder asks for more data to be able to provide an
-     * encoded frame, return indicating that no data is present. */
-    if (error == AVERROR(EAGAIN)) {
-        error = 0;
-        goto cleanup;
-    /* If the last frame has been encoded, stop encoding. */
-    } else if (error == AVERROR_EOF) {
-        error = 0;
-        goto cleanup;
-    } else if (error < 0) {
+    /**
+     * Encode the audio frame and store it in the temporary packet.
+     * The output audio stream encoder is used to do this.
+     */
+    if ((error = avcodec_encode_audio2(output_codec_context, &output_packet,
+                                       frame, data_present)) < 0) {
         fprintf(stderr, "Could not encode frame (error '%s')\n",
                 av_err2str(error));
-        goto cleanup;
-    /* Default case: Return encoded data. */
-    } else {
-        *data_present = 1;
+        av_packet_unref(&output_packet);
+        return error;
     }
 
-    /* Write one audio frame from the temporary packet to the output file. */
-    if (*data_present &&
-        (error = av_write_frame(output_format_context, output_packet)) < 0) {
-        fprintf(stderr, "Could not write frame (error '%s')\n",
-                av_err2str(error));
-        goto cleanup;
+    /** Write one audio frame from the temporary packet to the output file. */
+    if (*data_present) {
+        if ((error = av_write_frame(output_format_context, &output_packet)) < 0) {
+            fprintf(stderr, "Could not write frame (error '%s')\n",
+                    av_err2str(error));
+            av_packet_unref(&output_packet);
+            return error;
+        }
+
+        av_packet_unref(&output_packet);
     }
 
-cleanup:
-    av_packet_free(&output_packet);
-    return error;
+    return 0;
 }
 
 /**
  * Load one audio frame from the FIFO buffer, encode and write it to the
  * output file.
- * @param fifo                  Buffer used for temporary storage
- * @param output_format_context Format context of the output file
- * @param output_codec_context  Codec context of the output file
- * @return Error code (0 if successful)
  */
 static int load_encode_and_write(AVAudioFifo *fifo,
                                  AVFormatContext *output_format_context,
                                  AVCodecContext *output_codec_context)
 {
-    /* Temporary storage of the output samples of the frame written to the file. */
+    /** Temporary storage of the output samples of the frame written to the file. */
     AVFrame *output_frame;
-    /* Use the maximum number of possible samples per frame.
+    /**
+     * Use the maximum number of possible samples per frame.
      * If there is less than the maximum possible frame size in the FIFO
-     * buffer use this number. Otherwise, use the maximum possible frame size. */
+     * buffer use this number. Otherwise, use the maximum possible frame size
+     */
     const int frame_size = FFMIN(av_audio_fifo_size(fifo),
                                  output_codec_context->frame_size);
     int data_written;
 
-    /* Initialize temporary storage for one output frame. */
+    /** Initialize temporary storage for one output frame. */
     if (init_output_frame(&output_frame, output_codec_context, frame_size))
         return AVERROR_EXIT;
 
-    /* Read as many samples from the FIFO buffer as required to fill the frame.
-     * The samples are stored in the frame temporarily. */
+    /**
+     * Read as many samples from the FIFO buffer as required to fill the frame.
+     * The samples are stored in the frame temporarily.
+     */
     if (av_audio_fifo_read(fifo, (void **)output_frame->data, frame_size) < frame_size) {
         fprintf(stderr, "Could not read data from FIFO\n");
         av_frame_free(&output_frame);
         return AVERROR_EXIT;
     }
 
-    /* Encode one frame worth of audio samples. */
+    /** Encode one frame worth of audio samples. */
     if (encode_audio_frame(output_frame, output_format_context,
                            output_codec_context, &data_written)) {
         av_frame_free(&output_frame);
@@ -758,11 +653,7 @@ static int load_encode_and_write(AVAudioFifo *fifo,
     return 0;
 }
 
-/**
- * Write the trailer of the output file container.
- * @param output_format_context Format context of the output file
- * @return Error code (0 if successful)
- */
+/** Write the trailer of the output file container. */
 static int write_output_file_trailer(AVFormatContext *output_format_context)
 {
     int error;
@@ -774,6 +665,7 @@ static int write_output_file_trailer(AVFormatContext *output_format_context)
     return 0;
 }
 
+/** Convert an audio file to an AAC file in an MP4 container. */
 int main(int argc, char **argv)
 {
     AVFormatContext *input_format_context = NULL, *output_format_context = NULL;
@@ -782,73 +674,89 @@ int main(int argc, char **argv)
     AVAudioFifo *fifo = NULL;
     int ret = AVERROR_EXIT;
 
-    if (argc != 3) {
+    if (argc < 3) {
         fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
         exit(1);
     }
 
-    /* Open the input file for reading. */
+    /** Register all codecs and formats so that they can be used. */
+    av_register_all();
+    /** Open the input file for reading. */
     if (open_input_file(argv[1], &input_format_context,
                         &input_codec_context))
         goto cleanup;
-    /* Open the output file for writing. */
+    /** Open the output file for writing. */
     if (open_output_file(argv[2], input_codec_context,
                          &output_format_context, &output_codec_context))
         goto cleanup;
-    /* Initialize the resampler to be able to convert audio sample formats. */
+    /** Initialize the resampler to be able to convert audio sample formats. */
     if (init_resampler(input_codec_context, output_codec_context,
                        &resample_context))
         goto cleanup;
-    /* Initialize the FIFO buffer to store audio samples to be encoded. */
+    /** Initialize the FIFO buffer to store audio samples to be encoded. */
     if (init_fifo(&fifo, output_codec_context))
         goto cleanup;
-    /* Write the header of the output file container. */
+    /** Write the header of the output file container. */
     if (write_output_file_header(output_format_context))
         goto cleanup;
 
-    /* Loop as long as we have input samples to read or output samples
-     * to write; abort as soon as we have neither. */
+    /**
+     * Loop as long as we have input samples to read or output samples
+     * to write; abort as soon as we have neither.
+     */
     while (1) {
-        /* Use the encoder's desired frame size for processing. */
+        /** Use the encoder's desired frame size for processing. */
         const int output_frame_size = output_codec_context->frame_size;
         int finished                = 0;
 
-        /* Make sure that there is one frame worth of samples in the FIFO
+        /**
+         * Make sure that there is one frame worth of samples in the FIFO
          * buffer so that the encoder can do its work.
          * Since the decoder's and the encoder's frame size may differ, we
          * need to FIFO buffer to store as many frames worth of input samples
-         * that they make up at least one frame worth of output samples. */
+         * that they make up at least one frame worth of output samples.
+         */
         while (av_audio_fifo_size(fifo) < output_frame_size) {
-            /* Decode one frame worth of audio samples, convert it to the
-             * output sample format and put it into the FIFO buffer. */
+            /**
+             * Decode one frame worth of audio samples, convert it to the
+             * output sample format and put it into the FIFO buffer.
+             */
             if (read_decode_convert_and_store(fifo, input_format_context,
                                               input_codec_context,
                                               output_codec_context,
                                               resample_context, &finished))
                 goto cleanup;
 
-            /* If we are at the end of the input file, we continue
-             * encoding the remaining audio samples to the output file. */
+            /**
+             * If we are at the end of the input file, we continue
+             * encoding the remaining audio samples to the output file.
+             */
             if (finished)
                 break;
         }
 
-        /* If we have enough samples for the encoder, we encode them.
+        /**
+         * If we have enough samples for the encoder, we encode them.
          * At the end of the file, we pass the remaining samples to
-         * the encoder. */
+         * the encoder.
+         */
         while (av_audio_fifo_size(fifo) >= output_frame_size ||
                (finished && av_audio_fifo_size(fifo) > 0))
-            /* Take one frame worth of audio samples from the FIFO buffer,
-             * encode it and write it to the output file. */
+            /**
+             * Take one frame worth of audio samples from the FIFO buffer,
+             * encode it and write it to the output file.
+             */
             if (load_encode_and_write(fifo, output_format_context,
                                       output_codec_context))
                 goto cleanup;
 
-        /* If we are at the end of the input file and have encoded
-         * all remaining samples, we can exit this loop and finish. */
+        /**
+         * If we are at the end of the input file and have encoded
+         * all remaining samples, we can exit this loop and finish.
+         */
         if (finished) {
             int data_written;
-            /* Flush the encoder as it may have delayed frames. */
+            /** Flush the encoder as it may have delayed frames. */
             do {
                 if (encode_audio_frame(NULL, output_format_context,
                                        output_codec_context, &data_written))
@@ -858,7 +766,7 @@ int main(int argc, char **argv)
         }
     }
 
-    /* Write the trailer of the output file container. */
+    /** Write the trailer of the output file container. */
     if (write_output_file_trailer(output_format_context))
         goto cleanup;
     ret = 0;

doc/examples/transcoding.c

@@ -23,18 +23,16 @@
  */
 
 /**
- * @file demuxing, decoding, filtering, encoding and muxing API usage example
- * @example transcode.c
- *
- * Convert input to output file, applying some hard-coded filter-graph on both
- * audio and video streams.
+ * @file
+ * API example for demuxing, decoding, filtering, encoding and muxing
+ * @example transcoding.c
  */
 
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
+#include <libavfilter/avfiltergraph.h>
 #include <libavfilter/buffersink.h>
 #include <libavfilter/buffersrc.h>
-#include <libavutil/channel_layout.h>
 #include <libavutil/opt.h>
 #include <libavutil/pixdesc.h>
 
@@ -44,17 +42,12 @@ typedef struct FilteringContext {
     AVFilterContext *buffersink_ctx;
     AVFilterContext *buffersrc_ctx;
     AVFilterGraph *filter_graph;
-
-    AVPacket *enc_pkt;
-    AVFrame *filtered_frame;
 } FilteringContext;
 static FilteringContext *filter_ctx;
 
 typedef struct StreamContext {
     AVCodecContext *dec_ctx;
     AVCodecContext *enc_ctx;
-
-    AVFrame *dec_frame;
 } StreamContext;
 static StreamContext *stream_ctx;
 
@@ -74,13 +67,13 @@ static int open_input_file(const char *filename)
         return ret;
     }
 
-    stream_ctx = av_calloc(ifmt_ctx->nb_streams, sizeof(*stream_ctx));
+    stream_ctx = av_mallocz_array(ifmt_ctx->nb_streams, sizeof(*stream_ctx));
     if (!stream_ctx)
         return AVERROR(ENOMEM);
 
     for (i = 0; i < ifmt_ctx->nb_streams; i++) {
         AVStream *stream = ifmt_ctx->streams[i];
-        const AVCodec *dec = avcodec_find_decoder(stream->codecpar->codec_id);
+        AVCodec *dec = avcodec_find_decoder(stream->codecpar->codec_id);
         AVCodecContext *codec_ctx;
         if (!dec) {
             av_log(NULL, AV_LOG_ERROR, "Failed to find decoder for stream #%u\n", i);
@@ -97,11 +90,6 @@ static int open_input_file(const char *filename)
                    "for stream #%u\n", i);
             return ret;
         }
-
-        /* Inform the decoder about the timebase for the packet timestamps.
-         * This is highly recommended, but not mandatory. */
-        codec_ctx->pkt_timebase = stream->time_base;
-
         /* Reencode video & audio and remux subtitles etc. */
         if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO
                 || codec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
@@ -115,10 +103,6 @@ static int open_input_file(const char *filename)
             }
         }
         stream_ctx[i].dec_ctx = codec_ctx;
-
-        stream_ctx[i].dec_frame = av_frame_alloc();
-        if (!stream_ctx[i].dec_frame)
-            return AVERROR(ENOMEM);
     }
 
     av_dump_format(ifmt_ctx, 0, filename, 0);
@@ -130,7 +114,7 @@ static int open_output_file(const char *filename)
     AVStream *out_stream;
     AVStream *in_stream;
     AVCodecContext *dec_ctx, *enc_ctx;
-    const AVCodec *encoder;
+    AVCodec *encoder;
     int ret;
     unsigned int i;
 
@@ -182,9 +166,8 @@ static int open_output_file(const char *filename)
                 enc_ctx->time_base = av_inv_q(dec_ctx->framerate);
             } else {
                 enc_ctx->sample_rate = dec_ctx->sample_rate;
-                ret = av_channel_layout_copy(&enc_ctx->ch_layout, &dec_ctx->ch_layout);
-                if (ret < 0)
-                    return ret;
+                enc_ctx->channel_layout = dec_ctx->channel_layout;
+                enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
                 /* take first format from list of supported formats */
                 enc_ctx->sample_fmt = encoder->sample_fmts[0];
                 enc_ctx->time_base = (AVRational){1, enc_ctx->sample_rate};
@@ -246,8 +229,8 @@ static int init_filter(FilteringContext* fctx, AVCodecContext *dec_ctx,
 {
     char args[512];
     int ret = 0;
-    const AVFilter *buffersrc = NULL;
-    const AVFilter *buffersink = NULL;
+    AVFilter *buffersrc = NULL;
+    AVFilter *buffersink = NULL;
     AVFilterContext *buffersrc_ctx = NULL;
     AVFilterContext *buffersink_ctx = NULL;
     AVFilterInOut *outputs = avfilter_inout_alloc();
@@ -271,7 +254,7 @@ static int init_filter(FilteringContext* fctx, AVCodecContext *dec_ctx,
         snprintf(args, sizeof(args),
                 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
                 dec_ctx->width, dec_ctx->height, dec_ctx->pix_fmt,
-                dec_ctx->pkt_timebase.num, dec_ctx->pkt_timebase.den,
+                dec_ctx->time_base.num, dec_ctx->time_base.den,
                 dec_ctx->sample_aspect_ratio.num,
                 dec_ctx->sample_aspect_ratio.den);
 
@@ -297,7 +280,6 @@ static int init_filter(FilteringContext* fctx, AVCodecContext *dec_ctx,
             goto end;
         }
     } else if (dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
-        char buf[64];
         buffersrc = avfilter_get_by_name("abuffer");
         buffersink = avfilter_get_by_name("abuffersink");
         if (!buffersrc || !buffersink) {
@@ -306,14 +288,14 @@ static int init_filter(FilteringContext* fctx, AVCodecContext *dec_ctx,
             goto end;
         }
 
-        if (dec_ctx->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC)
-            av_channel_layout_default(&dec_ctx->ch_layout, dec_ctx->ch_layout.nb_channels);
-        av_channel_layout_describe(&dec_ctx->ch_layout, buf, sizeof(buf));
+        if (!dec_ctx->channel_layout)
+            dec_ctx->channel_layout =
+                av_get_default_channel_layout(dec_ctx->channels);
         snprintf(args, sizeof(args),
-                "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=%s",
-                dec_ctx->pkt_timebase.num, dec_ctx->pkt_timebase.den, dec_ctx->sample_rate,
+                "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%"PRIx64,
+                dec_ctx->time_base.num, dec_ctx->time_base.den, dec_ctx->sample_rate,
                 av_get_sample_fmt_name(dec_ctx->sample_fmt),
-                buf);
+                dec_ctx->channel_layout);
         ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
                 args, NULL, filter_graph);
         if (ret < 0) {
@@ -336,9 +318,9 @@ static int init_filter(FilteringContext* fctx, AVCodecContext *dec_ctx,
             goto end;
         }
 
-        av_channel_layout_describe(&enc_ctx->ch_layout, buf, sizeof(buf));
-        ret = av_opt_set(buffersink_ctx, "ch_layouts",
-                         buf, AV_OPT_SEARCH_CHILDREN);
+        ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
+                (uint8_t*)&enc_ctx->channel_layout,
+                sizeof(enc_ctx->channel_layout), AV_OPT_SEARCH_CHILDREN);
         if (ret < 0) {
             av_log(NULL, AV_LOG_ERROR, "Cannot set output channel layout\n");
             goto end;
@@ -417,67 +399,54 @@ static int init_filters(void)
                 stream_ctx[i].enc_ctx, filter_spec);
         if (ret)
             return ret;
-
-        filter_ctx[i].enc_pkt = av_packet_alloc();
-        if (!filter_ctx[i].enc_pkt)
-            return AVERROR(ENOMEM);
-
-        filter_ctx[i].filtered_frame = av_frame_alloc();
-        if (!filter_ctx[i].filtered_frame)
-            return AVERROR(ENOMEM);
     }
     return 0;
 }
 
-static int encode_write_frame(unsigned int stream_index, int flush)
-{
-    StreamContext *stream = &stream_ctx[stream_index];
-    FilteringContext *filter = &filter_ctx[stream_index];
-    AVFrame *filt_frame = flush ? NULL : filter->filtered_frame;
-    AVPacket *enc_pkt = filter->enc_pkt;
+static int encode_write_frame(AVFrame *filt_frame, unsigned int stream_index, int *got_frame) {
     int ret;
+    int got_frame_local;
+    AVPacket enc_pkt;
+    int (*enc_func)(AVCodecContext *, AVPacket *, const AVFrame *, int *) =
+        (ifmt_ctx->streams[stream_index]->codecpar->codec_type ==
+         AVMEDIA_TYPE_VIDEO) ? avcodec_encode_video2 : avcodec_encode_audio2;
+
+    if (!got_frame)
+        got_frame = &got_frame_local;
 
     av_log(NULL, AV_LOG_INFO, "Encoding frame\n");
     /* encode filtered frame */
-    av_packet_unref(enc_pkt);
-
-    if (filt_frame && filt_frame->pts != AV_NOPTS_VALUE)
-        filt_frame->pts = av_rescale_q(filt_frame->pts, filt_frame->time_base,
-                                       stream->enc_ctx->time_base);
-
-    ret = avcodec_send_frame(stream->enc_ctx, filt_frame);
-
+    enc_pkt.data = NULL;
+    enc_pkt.size = 0;
+    av_init_packet(&enc_pkt);
+    ret = enc_func(stream_ctx[stream_index].enc_ctx, &enc_pkt,
+            filt_frame, got_frame);
+    av_frame_free(&filt_frame);
     if (ret < 0)
         return ret;
+    if (!(*got_frame))
+        return 0;
 
-    while (ret >= 0) {
-        ret = avcodec_receive_packet(stream->enc_ctx, enc_pkt);
-
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
-            return 0;
-
-        /* prepare packet for muxing */
-        enc_pkt->stream_index = stream_index;
-        av_packet_rescale_ts(enc_pkt,
-                             stream->enc_ctx->time_base,
-                             ofmt_ctx->streams[stream_index]->time_base);
-
-        av_log(NULL, AV_LOG_DEBUG, "Muxing frame\n");
-        /* mux encoded frame */
-        ret = av_interleaved_write_frame(ofmt_ctx, enc_pkt);
-    }
+    /* prepare packet for muxing */
+    enc_pkt.stream_index = stream_index;
+    av_packet_rescale_ts(&enc_pkt,
+                         stream_ctx[stream_index].enc_ctx->time_base,
+                         ofmt_ctx->streams[stream_index]->time_base);
 
+    av_log(NULL, AV_LOG_DEBUG, "Muxing frame\n");
+    /* mux encoded frame */
+    ret = av_interleaved_write_frame(ofmt_ctx, &enc_pkt);
     return ret;
 }
 
 static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
 {
-    FilteringContext *filter = &filter_ctx[stream_index];
     int ret;
+    AVFrame *filt_frame;
 
     av_log(NULL, AV_LOG_INFO, "Pushing decoded frame to filters\n");
     /* push the decoded frame into the filtergraph */
-    ret = av_buffersrc_add_frame_flags(filter->buffersrc_ctx,
+    ret = av_buffersrc_add_frame_flags(filter_ctx[stream_index].buffersrc_ctx,
             frame, 0);
     if (ret < 0) {
         av_log(NULL, AV_LOG_ERROR, "Error while feeding the filtergraph\n");
@@ -486,9 +455,14 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
 
     /* pull filtered frames from the filtergraph */
     while (1) {
+        filt_frame = av_frame_alloc();
+        if (!filt_frame) {
+            ret = AVERROR(ENOMEM);
+            break;
+        }
         av_log(NULL, AV_LOG_INFO, "Pulling filtered frame from filters\n");
-        ret = av_buffersink_get_frame(filter->buffersink_ctx,
-                                      filter->filtered_frame);
+        ret = av_buffersink_get_frame(filter_ctx[stream_index].buffersink_ctx,
+                filt_frame);
         if (ret < 0) {
             /* if no more frames for output - returns AVERROR(EAGAIN)
              * if flushed and no more frames for output - returns AVERROR_EOF
@@ -496,13 +470,12 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
              */
             if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
                 ret = 0;
+            av_frame_free(&filt_frame);
             break;
         }
 
-        filter->filtered_frame->time_base = av_buffersink_get_time_base(filter->buffersink_ctx);;
-        filter->filtered_frame->pict_type = AV_PICTURE_TYPE_NONE;
-        ret = encode_write_frame(stream_index, 0);
-        av_frame_unref(filter->filtered_frame);
+        filt_frame->pict_type = AV_PICTURE_TYPE_NONE;
+        ret = encode_write_frame(filt_frame, stream_index, NULL);
         if (ret < 0)
             break;
     }
@@ -512,111 +485,106 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
 
 static int flush_encoder(unsigned int stream_index)
 {
+    int ret;
+    int got_frame;
+
     if (!(stream_ctx[stream_index].enc_ctx->codec->capabilities &
                 AV_CODEC_CAP_DELAY))
         return 0;
 
-    av_log(NULL, AV_LOG_INFO, "Flushing stream #%u encoder\n", stream_index);
-    return encode_write_frame(stream_index, 1);
+    while (1) {
+        av_log(NULL, AV_LOG_INFO, "Flushing stream #%u encoder\n", stream_index);
+        ret = encode_write_frame(NULL, stream_index, &got_frame);
+        if (ret < 0)
+            break;
+        if (!got_frame)
+            return 0;
+    }
+    return ret;
 }
 
 int main(int argc, char **argv)
 {
     int ret;
-    AVPacket *packet = NULL;
+    AVPacket packet = { .data = NULL, .size = 0 };
+    AVFrame *frame = NULL;
+    enum AVMediaType type;
     unsigned int stream_index;
     unsigned int i;
+    int got_frame;
+    int (*dec_func)(AVCodecContext *, AVFrame *, int *, const AVPacket *);
 
     if (argc != 3) {
         av_log(NULL, AV_LOG_ERROR, "Usage: %s <input file> <output file>\n", argv[0]);
         return 1;
     }
 
+    av_register_all();
+    avfilter_register_all();
+
     if ((ret = open_input_file(argv[1])) < 0)
         goto end;
     if ((ret = open_output_file(argv[2])) < 0)
         goto end;
     if ((ret = init_filters()) < 0)
         goto end;
-    if (!(packet = av_packet_alloc()))
-        goto end;
 
     /* read all packets */
     while (1) {
-        if ((ret = av_read_frame(ifmt_ctx, packet)) < 0)
+        if ((ret = av_read_frame(ifmt_ctx, &packet)) < 0)
             break;
-        stream_index = packet->stream_index;
+        stream_index = packet.stream_index;
+        type = ifmt_ctx->streams[packet.stream_index]->codecpar->codec_type;
         av_log(NULL, AV_LOG_DEBUG, "Demuxer gave frame of stream_index %u\n",
                 stream_index);
 
         if (filter_ctx[stream_index].filter_graph) {
-            StreamContext *stream = &stream_ctx[stream_index];
-
             av_log(NULL, AV_LOG_DEBUG, "Going to reencode&filter the frame\n");
-
-            ret = avcodec_send_packet(stream->dec_ctx, packet);
+            frame = av_frame_alloc();
+            if (!frame) {
+                ret = AVERROR(ENOMEM);
+                break;
+            }
+            av_packet_rescale_ts(&packet,
+                                 ifmt_ctx->streams[stream_index]->time_base,
+                                 stream_ctx[stream_index].dec_ctx->time_base);
+            dec_func = (type == AVMEDIA_TYPE_VIDEO) ? avcodec_decode_video2 :
+                avcodec_decode_audio4;
+            ret = dec_func(stream_ctx[stream_index].dec_ctx, frame,
+                    &got_frame, &packet);
             if (ret < 0) {
+                av_frame_free(&frame);
                 av_log(NULL, AV_LOG_ERROR, "Decoding failed\n");
                 break;
             }
 
-            while (ret >= 0) {
-                ret = avcodec_receive_frame(stream->dec_ctx, stream->dec_frame);
-                if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
-                    break;
-                else if (ret < 0)
-                    goto end;
-
-                stream->dec_frame->pts = stream->dec_frame->best_effort_timestamp;
-                ret = filter_encode_write_frame(stream->dec_frame, stream_index);
+            if (got_frame) {
+                frame->pts = av_frame_get_best_effort_timestamp(frame);
+                ret = filter_encode_write_frame(frame, stream_index);
+                av_frame_free(&frame);
                 if (ret < 0)
                     goto end;
+            } else {
+                av_frame_free(&frame);
             }
         } else {
             /* remux this frame without reencoding */
-            av_packet_rescale_ts(packet,
+            av_packet_rescale_ts(&packet,
                                  ifmt_ctx->streams[stream_index]->time_base,
                                  ofmt_ctx->streams[stream_index]->time_base);
 
-            ret = av_interleaved_write_frame(ofmt_ctx, packet);
+            ret = av_interleaved_write_frame(ofmt_ctx, &packet);
             if (ret < 0)
                 goto end;
         }
-        av_packet_unref(packet);
+        av_packet_unref(&packet);
     }
 
-    /* flush decoders, filters and encoders */
+    /* flush filters and encoders */
     for (i = 0; i < ifmt_ctx->nb_streams; i++) {
-        StreamContext *stream;
-
+        /* flush filter */
         if (!filter_ctx[i].filter_graph)
             continue;
-
-        stream = &stream_ctx[i];
-
-        av_log(NULL, AV_LOG_INFO, "Flushing stream %u decoder\n", i);
-
-        /* flush decoder */
-        ret = avcodec_send_packet(stream->dec_ctx, NULL);
-        if (ret < 0) {
-            av_log(NULL, AV_LOG_ERROR, "Flushing decoding failed\n");
-            goto end;
-        }
-
-        while (ret >= 0) {
-            ret = avcodec_receive_frame(stream->dec_ctx, stream->dec_frame);
-            if (ret == AVERROR_EOF)
-                break;
-            else if (ret < 0)
-                goto end;
-
-            stream->dec_frame->pts = stream->dec_frame->best_effort_timestamp;
-            ret = filter_encode_write_frame(stream->dec_frame, i);
-            if (ret < 0)
-                goto end;
-        }
-
-        /* flush filter */
         ret = filter_encode_write_frame(NULL, i);
         if (ret < 0) {
             av_log(NULL, AV_LOG_ERROR, "Flushing filter failed\n");
@@ -633,18 +601,14 @@ int main(int argc, char **argv)
 
     av_write_trailer(ofmt_ctx);
 end:
-    av_packet_free(&packet);
+    av_packet_unref(&packet);
+    av_frame_free(&frame);
     for (i = 0; i < ifmt_ctx->nb_streams; i++) {
         avcodec_free_context(&stream_ctx[i].dec_ctx);
         if (ofmt_ctx && ofmt_ctx->nb_streams > i && ofmt_ctx->streams[i] && stream_ctx[i].enc_ctx)
             avcodec_free_context(&stream_ctx[i].enc_ctx);
-        if (filter_ctx && filter_ctx[i].filter_graph) {
+        if (filter_ctx && filter_ctx[i].filter_graph)
             avfilter_graph_free(&filter_ctx[i].filter_graph);
-            av_packet_free(&filter_ctx[i].enc_pkt);
-            av_frame_free(&filter_ctx[i].filtered_frame);
-        }
-
-        av_frame_free(&stream_ctx[i].dec_frame);
     }
     av_free(filter_ctx);
     av_free(stream_ctx);

doc/examples/vaapi_encode.c

@@ -1,221 +0,0 @@
-/*
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-/**
- * @file Intel VAAPI-accelerated encoding API usage example
- * @example vaapi_encode.c
- *
- * Perform VAAPI-accelerated encoding. Read input from an NV12 raw
- * file, and write the H.264 encoded data to an output raw file.
- * Usage: vaapi_encode 1920 1080 input.yuv output.h264
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-
-#include <libavcodec/avcodec.h>
-#include <libavutil/pixdesc.h>
-#include <libavutil/hwcontext.h>
-
-static int width, height;
-static AVBufferRef *hw_device_ctx = NULL;
-
-static int set_hwframe_ctx(AVCodecContext *ctx, AVBufferRef *hw_device_ctx)
-{
-    AVBufferRef *hw_frames_ref;
-    AVHWFramesContext *frames_ctx = NULL;
-    int err = 0;
-
-    if (!(hw_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx))) {
-        fprintf(stderr, "Failed to create VAAPI frame context.\n");
-        return -1;
-    }
-    frames_ctx = (AVHWFramesContext *)(hw_frames_ref->data);
-    frames_ctx->format    = AV_PIX_FMT_VAAPI;
-    frames_ctx->sw_format = AV_PIX_FMT_NV12;
-    frames_ctx->width     = width;
-    frames_ctx->height    = height;
-    frames_ctx->initial_pool_size = 20;
-    if ((err = av_hwframe_ctx_init(hw_frames_ref)) < 0) {
-        fprintf(stderr, "Failed to initialize VAAPI frame context."
-                "Error code: %s\n",av_err2str(err));
-        av_buffer_unref(&hw_frames_ref);
-        return err;
-    }
-    ctx->hw_frames_ctx = av_buffer_ref(hw_frames_ref);
-    if (!ctx->hw_frames_ctx)
-        err = AVERROR(ENOMEM);
-
-    av_buffer_unref(&hw_frames_ref);
-    return err;
-}
-
-static int encode_write(AVCodecContext *avctx, AVFrame *frame, FILE *fout)
-{
-    int ret = 0;
-    AVPacket *enc_pkt;
-
-    if (!(enc_pkt = av_packet_alloc()))
-        return AVERROR(ENOMEM);
-
-    if ((ret = avcodec_send_frame(avctx, frame)) < 0) {
-        fprintf(stderr, "Error code: %s\n", av_err2str(ret));
-        goto end;
-    }
-    while (1) {
-        ret = avcodec_receive_packet(avctx, enc_pkt);
-        if (ret)
-            break;
-
-        enc_pkt->stream_index = 0;
-        ret = fwrite(enc_pkt->data, enc_pkt->size, 1, fout);
-        av_packet_unref(enc_pkt);
-    }
-
-end:
-    av_packet_free(&enc_pkt);
-    ret = ((ret == AVERROR(EAGAIN)) ? 0 : -1);
-    return ret;
-}
-
-int main(int argc, char *argv[])
-{
-    int size, err;
-    FILE *fin = NULL, *fout = NULL;
-    AVFrame *sw_frame = NULL, *hw_frame = NULL;
-    AVCodecContext *avctx = NULL;
-    const AVCodec *codec = NULL;
-    const char *enc_name = "h264_vaapi";
-
-    if (argc < 5) {
-        fprintf(stderr, "Usage: %s <width> <height> <input file> <output file>\n", argv[0]);
-        return -1;
-    }
-
-    width  = atoi(argv[1]);
-    height = atoi(argv[2]);
-    size   = width * height;
-
-    if (!(fin = fopen(argv[3], "r"))) {
-        fprintf(stderr, "Fail to open input file : %s\n", strerror(errno));
-        return -1;
-    }
-    if (!(fout = fopen(argv[4], "w+b"))) {
-        fprintf(stderr, "Fail to open output file : %s\n", strerror(errno));
-        err = -1;
-        goto close;
-    }
-
-    err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI,
-                                 NULL, NULL, 0);
-    if (err < 0) {
-        fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(err));
-        goto close;
-    }
-
-    if (!(codec = avcodec_find_encoder_by_name(enc_name))) {
-        fprintf(stderr, "Could not find encoder.\n");
-        err = -1;
-        goto close;
-    }
-
-    if (!(avctx = avcodec_alloc_context3(codec))) {
-        err = AVERROR(ENOMEM);
-        goto close;
-    }
-
-    avctx->width     = width;
-    avctx->height    = height;
-    avctx->time_base = (AVRational){1, 25};
-    avctx->framerate = (AVRational){25, 1};
-    avctx->sample_aspect_ratio = (AVRational){1, 1};
-    avctx->pix_fmt   = AV_PIX_FMT_VAAPI;
-
-    /* set hw_frames_ctx for encoder's AVCodecContext */
-    if ((err = set_hwframe_ctx(avctx, hw_device_ctx)) < 0) {
-        fprintf(stderr, "Failed to set hwframe context.\n");
-        goto close;
-    }
-
-    if ((err = avcodec_open2(avctx, codec, NULL)) < 0) {
-        fprintf(stderr, "Cannot open video encoder codec. Error code: %s\n", av_err2str(err));
-        goto close;
-    }
-
-    while (1) {
-        if (!(sw_frame = av_frame_alloc())) {
-            err = AVERROR(ENOMEM);
-            goto close;
-        }
-        /* read data into software frame, and transfer them into hw frame */
-        sw_frame->width  = width;
-        sw_frame->height = height;
-        sw_frame->format = AV_PIX_FMT_NV12;
-        if ((err = av_frame_get_buffer(sw_frame, 0)) < 0)
-            goto close;
-        if ((err = fread((uint8_t*)(sw_frame->data[0]), size, 1, fin)) <= 0)
-            break;
-        if ((err = fread((uint8_t*)(sw_frame->data[1]), size/2, 1, fin)) <= 0)
-            break;
-
-        if (!(hw_frame = av_frame_alloc())) {
-            err = AVERROR(ENOMEM);
-            goto close;
-        }
-        if ((err = av_hwframe_get_buffer(avctx->hw_frames_ctx, hw_frame, 0)) < 0) {
-            fprintf(stderr, "Error code: %s.\n", av_err2str(err));
-            goto close;
-        }
-        if (!hw_frame->hw_frames_ctx) {
-            err = AVERROR(ENOMEM);
-            goto close;
-        }
-        if ((err = av_hwframe_transfer_data(hw_frame, sw_frame, 0)) < 0) {
-            fprintf(stderr, "Error while transferring frame data to surface."
-                    "Error code: %s.\n", av_err2str(err));
-            goto close;
-        }
-
-        if ((err = (encode_write(avctx, hw_frame, fout))) < 0) {
-            fprintf(stderr, "Failed to encode.\n");
-            goto close;
-        }
-        av_frame_free(&hw_frame);
-        av_frame_free(&sw_frame);
-    }
-
-    /* flush encoder */
-    err = encode_write(avctx, NULL, fout);
-    if (err == AVERROR_EOF)
-        err = 0;
-
-close:
-    if (fin)
-        fclose(fin);
-    if (fout)
-        fclose(fout);
-    av_frame_free(&sw_frame);
-    av_frame_free(&hw_frame);
-    avcodec_free_context(&avctx);
-    av_buffer_unref(&hw_device_ctx);
-
-    return err;
-}

doc/examples/vaapi_transcode.c

@@ -1,305 +0,0 @@
-/*
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-/**
- * @file Intel VAAPI-accelerated transcoding API usage example
- * @example vaapi_transcode.c
- *
- * Perform VAAPI-accelerated transcoding.
- * Usage: vaapi_transcode input_stream codec output_stream
- * e.g: - vaapi_transcode input.mp4 h264_vaapi output_h264.mp4
- *      - vaapi_transcode input.mp4 vp9_vaapi output_vp9.ivf
- */
-
-#include <stdio.h>
-#include <errno.h>
-
-#include <libavutil/hwcontext.h>
-#include <libavcodec/avcodec.h>
-#include <libavformat/avformat.h>
-
-static AVFormatContext *ifmt_ctx = NULL, *ofmt_ctx = NULL;
-static AVBufferRef *hw_device_ctx = NULL;
-static AVCodecContext *decoder_ctx = NULL, *encoder_ctx = NULL;
-static int video_stream = -1;
-static AVStream *ost;
-static int initialized = 0;
-
-static enum AVPixelFormat get_vaapi_format(AVCodecContext *ctx,
-                                           const enum AVPixelFormat *pix_fmts)
-{
-    const enum AVPixelFormat *p;
-
-    for (p = pix_fmts; *p != AV_PIX_FMT_NONE; p++) {
-        if (*p == AV_PIX_FMT_VAAPI)
-            return *p;
-    }
-
-    fprintf(stderr, "Unable to decode this file using VA-API.\n");
-    return AV_PIX_FMT_NONE;
-}
-
-static int open_input_file(const char *filename)
-{
-    int ret;
-    const AVCodec *decoder = NULL;
-    AVStream *video = NULL;
-
-    if ((ret = avformat_open_input(&ifmt_ctx, filename, NULL, NULL)) < 0) {
-        fprintf(stderr, "Cannot open input file '%s', Error code: %s\n",
-                filename, av_err2str(ret));
-        return ret;
-    }
-
-    if ((ret = avformat_find_stream_info(ifmt_ctx, NULL)) < 0) {
-        fprintf(stderr, "Cannot find input stream information. Error code: %s\n",
-                av_err2str(ret));
-        return ret;
-    }
-
-    ret = av_find_best_stream(ifmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &decoder, 0);
-    if (ret < 0) {
-        fprintf(stderr, "Cannot find a video stream in the input file. "
-                "Error code: %s\n", av_err2str(ret));
-        return ret;
-    }
-    video_stream = ret;
-
-    if (!(decoder_ctx = avcodec_alloc_context3(decoder)))
-        return AVERROR(ENOMEM);
-
-    video = ifmt_ctx->streams[video_stream];
-    if ((ret = avcodec_parameters_to_context(decoder_ctx, video->codecpar)) < 0) {
-        fprintf(stderr, "avcodec_parameters_to_context error. Error code: %s\n",
-                av_err2str(ret));
-        return ret;
-    }
-
-    decoder_ctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);
-    if (!decoder_ctx->hw_device_ctx) {
-        fprintf(stderr, "A hardware device reference create failed.\n");
-        return AVERROR(ENOMEM);
-    }
-    decoder_ctx->get_format    = get_vaapi_format;
-
-    if ((ret = avcodec_open2(decoder_ctx, decoder, NULL)) < 0)
-        fprintf(stderr, "Failed to open codec for decoding. Error code: %s\n",
-                av_err2str(ret));
-
-    return ret;
-}
-
-static int encode_write(AVPacket *enc_pkt, AVFrame *frame)
-{
-    int ret = 0;
-
-    av_packet_unref(enc_pkt);
-
-    if ((ret = avcodec_send_frame(encoder_ctx, frame)) < 0) {
-        fprintf(stderr, "Error during encoding. Error code: %s\n", av_err2str(ret));
-        goto end;
-    }
-    while (1) {
-        ret = avcodec_receive_packet(encoder_ctx, enc_pkt);
-        if (ret)
-            break;
-
-        enc_pkt->stream_index = 0;
-        av_packet_rescale_ts(enc_pkt, ifmt_ctx->streams[video_stream]->time_base,
-                             ofmt_ctx->streams[0]->time_base);
-        ret = av_interleaved_write_frame(ofmt_ctx, enc_pkt);
-        if (ret < 0) {
-            fprintf(stderr, "Error during writing data to output file. "
-                    "Error code: %s\n", av_err2str(ret));
-            return -1;
-        }
-    }
-
-end:
-    if (ret == AVERROR_EOF)
-        return 0;
-    ret = ((ret == AVERROR(EAGAIN)) ? 0:-1);
-    return ret;
-}
-
-static int dec_enc(AVPacket *pkt, const AVCodec *enc_codec)
-{
-    AVFrame *frame;
-    int ret = 0;
-
-    ret = avcodec_send_packet(decoder_ctx, pkt);
-    if (ret < 0) {
-        fprintf(stderr, "Error during decoding. Error code: %s\n", av_err2str(ret));
-        return ret;
-    }
-
-    while (ret >= 0) {
-        if (!(frame = av_frame_alloc()))
-            return AVERROR(ENOMEM);
-
-        ret = avcodec_receive_frame(decoder_ctx, frame);
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
-            av_frame_free(&frame);
-            return 0;
-        } else if (ret < 0) {
-            fprintf(stderr, "Error while decoding. Error code: %s\n", av_err2str(ret));
-            goto fail;
-        }
-
-        if (!initialized) {
-            /* we need to ref hw_frames_ctx of decoder to initialize encoder's codec.
-               Only after we get a decoded frame, can we obtain its hw_frames_ctx */
-            encoder_ctx->hw_frames_ctx = av_buffer_ref(decoder_ctx->hw_frames_ctx);
-            if (!encoder_ctx->hw_frames_ctx) {
-                ret = AVERROR(ENOMEM);
-                goto fail;
-            }
-            /* set AVCodecContext Parameters for encoder, here we keep them stay
-             * the same as decoder.
-             * xxx: now the sample can't handle resolution change case.
-             */
-            encoder_ctx->time_base = av_inv_q(decoder_ctx->framerate);
-            encoder_ctx->pix_fmt   = AV_PIX_FMT_VAAPI;
-            encoder_ctx->width     = decoder_ctx->width;
-            encoder_ctx->height    = decoder_ctx->height;
-
-            if ((ret = avcodec_open2(encoder_ctx, enc_codec, NULL)) < 0) {
-                fprintf(stderr, "Failed to open encode codec. Error code: %s\n",
-                        av_err2str(ret));
-                goto fail;
-            }
-
-            if (!(ost = avformat_new_stream(ofmt_ctx, enc_codec))) {
-                fprintf(stderr, "Failed to allocate stream for output format.\n");
-                ret = AVERROR(ENOMEM);
-                goto fail;
-            }
-
-            ost->time_base = encoder_ctx->time_base;
-            ret = avcodec_parameters_from_context(ost->codecpar, encoder_ctx);
-            if (ret < 0) {
-                fprintf(stderr, "Failed to copy the stream parameters. "
-                        "Error code: %s\n", av_err2str(ret));
-                goto fail;
-            }
-
-            /* write the stream header */
-            if ((ret = avformat_write_header(ofmt_ctx, NULL)) < 0) {
-                fprintf(stderr, "Error while writing stream header. "
-                        "Error code: %s\n", av_err2str(ret));
-                goto fail;
-            }
-
-            initialized = 1;
-        }
-
-        if ((ret = encode_write(pkt, frame)) < 0)
-            fprintf(stderr, "Error during encoding and writing.\n");
-
-fail:
-        av_frame_free(&frame);
-        if (ret < 0)
-            return ret;
-    }
-    return 0;
-}
-
-int main(int argc, char **argv)
-{
-    const AVCodec *enc_codec;
-    int ret = 0;
-    AVPacket *dec_pkt;
-
-    if (argc != 4) {
-        fprintf(stderr, "Usage: %s <input file> <encode codec> <output file>\n"
-                "The output format is guessed according to the file extension.\n"
-                "\n", argv[0]);
-        return -1;
-    }
-
-    ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, NULL, NULL, 0);
-    if (ret < 0) {
-        fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(ret));
-        return -1;
-    }
-
-    dec_pkt = av_packet_alloc();
-    if (!dec_pkt) {
-        fprintf(stderr, "Failed to allocate decode packet\n");
-        goto end;
-    }
-
-    if ((ret = open_input_file(argv[1])) < 0)
-        goto end;
-
-    if (!(enc_codec = avcodec_find_encoder_by_name(argv[2]))) {
-        fprintf(stderr, "Could not find encoder '%s'\n", argv[2]);
-        ret = -1;
-        goto end;
-    }
-
-    if ((ret = (avformat_alloc_output_context2(&ofmt_ctx, NULL, NULL, argv[3]))) < 0) {
-        fprintf(stderr, "Failed to deduce output format from file extension. Error code: "
-                "%s\n", av_err2str(ret));
-        goto end;
-    }
-
-    if (!(encoder_ctx = avcodec_alloc_context3(enc_codec))) {
-        ret = AVERROR(ENOMEM);
-        goto end;
-    }
-
-    ret = avio_open(&ofmt_ctx->pb, argv[3], AVIO_FLAG_WRITE);
-    if (ret < 0) {
-        fprintf(stderr, "Cannot open output file. "
-                "Error code: %s\n", av_err2str(ret));
-        goto end;
-    }
-
-    /* read all packets and only transcoding video */
-    while (ret >= 0) {
-        if ((ret = av_read_frame(ifmt_ctx, dec_pkt)) < 0)
-            break;
-
-        if (video_stream == dec_pkt->stream_index)
-            ret = dec_enc(dec_pkt, enc_codec);
-
-        av_packet_unref(dec_pkt);
-    }
-
-    /* flush decoder */
-    av_packet_unref(dec_pkt);
-    ret = dec_enc(dec_pkt, enc_codec);
-
-    /* flush encoder */
-    ret = encode_write(dec_pkt, NULL);
-
-    /* write the trailer for output stream */
-    av_write_trailer(ofmt_ctx);
-
-end:
-    avformat_close_input(&ifmt_ctx);
-    avformat_close_input(&ofmt_ctx);
-    avcodec_free_context(&decoder_ctx);
-    avcodec_free_context(&encoder_ctx);
-    av_buffer_unref(&hw_device_ctx);
-    av_packet_free(&dec_pkt);
-    return ret;
-}

doc/faq.texi

@@ -76,7 +76,7 @@ the gcc developers. Note that we will not add workarounds for gcc bugs.
 
 Also note that (some of) the gcc developers believe this is not a bug or
 not a bug they should fix:
-@url{https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11203}.
+@url{http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11203}.
 Then again, some of them do not know the difference between an undecidable
 problem and an NP-hard problem...
 
@@ -257,13 +257,13 @@ default.
 @section Which are good parameters for encoding high quality MPEG-4?
 
 '-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -g 300 -pass 1/2',
-things to try: '-bf 2', '-mpv_flags qp_rd', '-mpv_flags mv0', '-mpv_flags skip_rd'.
+things to try: '-bf 2', '-flags qprd', '-flags mv0', '-flags skiprd'.
 
 @section Which are good parameters for encoding high quality MPEG-1/MPEG-2?
 
 '-mbd rd -trellis 2 -cmp 2 -subcmp 2 -g 100 -pass 1/2'
 but beware the '-g 100' might cause problems with some decoders.
-Things to try: '-bf 2', '-mpv_flags qp_rd', '-mpv_flags mv0', '-mpv_flags skip_rd'.
+Things to try: '-bf 2', '-flags qprd', '-flags mv0', '-flags skiprd.
 
 @section Interlaced video looks very bad when encoded with ffmpeg, what is wrong?
 
@@ -385,7 +385,7 @@ mkfifo intermediate2.mpg
 ffmpeg -i input1.avi -qscale:v 1 -y intermediate1.mpg < /dev/null &
 ffmpeg -i input2.avi -qscale:v 1 -y intermediate2.mpg < /dev/null &
 cat intermediate1.mpg intermediate2.mpg |\
-ffmpeg -f mpeg -i - -c:v mpeg4 -c:a libmp3lame output.avi
+ffmpeg -f mpeg -i - -c:v mpeg4 -acodec libmp3lame output.avi
 @end example
 
 @subsection Concatenating using raw audio and video
@@ -407,13 +407,13 @@ mkfifo temp2.a
 mkfifo temp2.v
 mkfifo all.a
 mkfifo all.v
-ffmpeg -i input1.flv -vn -f u16le -c:a pcm_s16le -ac 2 -ar 44100 - > temp1.a < /dev/null &
-ffmpeg -i input2.flv -vn -f u16le -c:a pcm_s16le -ac 2 -ar 44100 - > temp2.a < /dev/null &
+ffmpeg -i input1.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp1.a < /dev/null &
+ffmpeg -i input2.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp2.a < /dev/null &
 ffmpeg -i input1.flv -an -f yuv4mpegpipe - > temp1.v < /dev/null &
 @{ ffmpeg -i input2.flv -an -f yuv4mpegpipe - < /dev/null | tail -n +2 > temp2.v ; @} &
 cat temp1.a temp2.a > all.a &
 cat temp1.v temp2.v > all.v &
-ffmpeg -f u16le -c:a pcm_s16le -ac 2 -ar 44100 -i all.a \
+ffmpeg -f u16le -acodec pcm_s16le -ac 2 -ar 44100 -i all.a \
        -f yuv4mpegpipe -i all.v \
        -y output.flv
 rm temp[12].[av] all.[av]
@@ -501,71 +501,6 @@ ffmpeg -i ega_screen.nut -vf setdar=4/3 ega_screen_anamorphic.nut
 ffmpeg -i ega_screen.nut -aspect 4/3 -c copy ega_screen_overridden.nut
 @end example
 
-@anchor{background task}
-@section How do I run ffmpeg as a background task?
-
-ffmpeg normally checks the console input, for entries like "q" to stop
-and "?" to give help, while performing operations. ffmpeg does not have a way of
-detecting when it is running as a background task.
-When it checks the console input, that can cause the process running ffmpeg
-in the background to suspend.
-
-To prevent those input checks, allowing ffmpeg to run as a background task,
-use the @url{ffmpeg.html#stdin-option, @code{-nostdin} option}
-in the ffmpeg invocation. This is effective whether you run ffmpeg in a shell
-or invoke ffmpeg in its own process via an operating system API.
-
-As an alternative, when you are running ffmpeg in a shell, you can redirect
-standard input to @code{/dev/null} (on Linux and macOS)
-or @code{NUL} (on Windows). You can do this redirect either
-on the ffmpeg invocation, or from a shell script which calls ffmpeg.
-
-For example:
-
-@example
-ffmpeg -nostdin -i INPUT OUTPUT
-@end example
-
-or (on Linux, macOS, and other UNIX-like shells):
-
-@example
-ffmpeg -i INPUT OUTPUT </dev/null
-@end example
-
-or (on Windows):
-
-@example
-ffmpeg -i INPUT OUTPUT <NUL
-@end example
-
-@section How do I prevent ffmpeg from suspending with a message like @emph{suspended (tty output)}?
-
-If you run ffmpeg in the background, you may find that its process suspends.
-There may be a message like @emph{suspended (tty output)}. The question is how
-to prevent the process from being suspended.
-
-For example:
-
-@example
-% ffmpeg -i INPUT OUTPUT &> ~/tmp/log.txt &
-[1] 93352
-%
-[1]  + suspended (tty output)  ffmpeg -i INPUT OUTPUT &>
-@end example
-
-The message "tty output" notwithstanding, the problem here is that
-ffmpeg normally checks the console input when it runs. The operating system
-detects this, and suspends the process until you can bring it to the
-foreground and attend to it.
-
-The solution is to use the right techniques to tell ffmpeg not to consult
-console input. You can use the
-@url{ffmpeg.html#stdin-option, @code{-nostdin} option},
-or redirect standard input with @code{< /dev/null}.
-See FAQ
-@ref{background task, @emph{How do I run ffmpeg as a background task?}}
-for details.
-
 @chapter Development
 
 @section Are there examples illustrating how to use the FFmpeg libraries, particularly libavcodec and libavformat?
@@ -601,7 +536,7 @@ No. These tools are too bloated and they complicate the build.
 FFmpeg is already organized in a highly modular manner and does not need to
 be rewritten in a formal object language. Further, many of the developers
 favor straight C; it works for them. For more arguments on this matter,
-read @uref{https://web.archive.org/web/20111004021423/http://kernel.org/pub/linux/docs/lkml/#s15, "Programming Religion"}.
+read @uref{http://www.tux.org/lkml/#s15, "Programming Religion"}.
 
 @section Why are the ffmpeg programs devoid of debugging symbols?
 

doc/fate.texi

@@ -79,21 +79,6 @@ Do not put a '~' character in the samples path to indicate a home
 directory. Because of shell nuances, this will cause FATE to fail.
 @end float
 
-To get the complete list of tests, run the command:
-@example
-make fate-list
-@end example
-
-You can specify a subset of tests to run by specifying the
-corresponding elements from the list with the @code{fate-} prefix,
-e.g. as in:
-@example
-make fate-ffprobe_compact fate-ffprobe_xml
-@end example
-
-This makes it easier to run a few tests in case of failure without
-running the complete test suite.
-
 To use a custom wrapper to run the test, pass @option{--target-exec} to
 @command{configure} or set the @var{TARGET_EXEC} Make variable.
 
@@ -162,32 +147,6 @@ process.
 The only thing left is to automate the execution of the fate.sh script and
 the synchronisation of the samples directory.
 
-@chapter Uploading new samples to the fate suite
-
-If you need a sample uploaded send a mail to samples-request.
-
-This is for developers who have an account on the fate suite server.
-If you upload new samples, please make sure they are as small as possible,
-space on each client, network bandwidth and so on benefit from smaller test cases.
-Also keep in mind older checkouts use existing sample files, that means in
-practice generally do not replace, remove or overwrite files as it likely would
-break older checkouts or releases.
-Also all needed samples for a commit should be uploaded, ideally 24
-hours, before the push.
-If you need an account for frequently uploading samples or you wish to help
-others by doing that send a mail to ffmpeg-devel.
-
-@example
-#First update your local samples copy:
-rsync -vauL --chmod=Dg+s,Duo+x,ug+rw,o+r,o-w,+X fate-suite.ffmpeg.org:/home/samples/fate-suite/ ~/fate-suite
-
-#Then do a dry run checking what would be uploaded:
-rsync -vanL --no-g --chmod=Dg+s,Duo+x,ug+rw,o+r,o-w,+X ~/fate-suite/ fate-suite.ffmpeg.org:/home/samples/fate-suite
-
-#Upload the files:
-rsync -vaL  --no-g --chmod=Dg+s,Duo+x,ug+rw,o+r,o-w,+X ~/fate-suite/ fate-suite.ffmpeg.org:/home/samples/fate-suite
-@end example
-
 
 @chapter FATE makefile targets and variables
 
@@ -223,14 +182,6 @@ meaning only while running the regression tests.
 Specify how many threads to use while running regression tests, it is
 quite useful to detect thread-related regressions.
 
-This variable may be set to the string "random", optionally followed by a
-number, like "random99", This will cause each test to use a random number of
-threads. If a number is specified, it is used as a maximum number of threads,
-otherwise 16 is the maximum.
-
-In case a test fails, the thread count used for it will be written into the
-errfile.
-
 @item THREAD_TYPE
 Specify which threading strategy test, either @samp{slice} or @samp{frame},
 by default @samp{slice+frame}
@@ -251,11 +202,6 @@ Set to @samp{1} to generate the missing or mismatched references.
 Specify which hardware acceleration to use while running regression tests,
 by default @samp{none} is used.
 
-@item KEEP
-Set to @samp{1} to keep temp files generated by fate test(s) when test is successful.
-Default is @samp{0}, which removes these files. Files are always kept when a test
-fails.
-
 @end table
 
 @section Examples

doc/fate_config.sh.template

@@ -6,7 +6,6 @@ workdir=                                 # directory in which to do all the work
 #fate_recv="ssh -T fate@fate.ffmpeg.org" # command to submit report
 comment=                                 # optional description
 build_only=     # set to "yes" for a compile-only instance that skips tests
-ignore_tests=
 
 # the following are optional and map to configure options
 arch=
@@ -27,7 +26,5 @@ extra_conf=     # extra configure options not covered above
 
 #make=          # name of GNU make if not 'make'
 makeopts=       # extra options passed to 'make'
-#makeopts_fate= # extra options passed to 'make' when running tests,
-                # defaulting to makeopts above if this is not set
 #tar=           # command to create a tar archive from its arguments on stdout,
                 # defaults to 'tar c'

doc/ffmpeg-bitstream-filters.texi

@@ -26,12 +26,12 @@ bitstream level modifications without performing decoding.
 @chapter See Also
 
 @ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
 @url{libavcodec.html,libavcodec}
 @end ifhtml
 
 @ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavcodec(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
 @end ifnothtml
 
 @include authors.texi

doc/ffmpeg-codecs.texi

@@ -23,12 +23,12 @@ the libavcodec library.
 @chapter See Also
 
 @ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
 @url{libavcodec.html,libavcodec}
 @end ifhtml
 
 @ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavcodec(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
 @end ifnothtml
 
 @include authors.texi

doc/ffmpeg-devices.texi

@@ -23,12 +23,12 @@ libavdevice library.
 @chapter See Also
 
 @ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
 @url{libavdevice.html,libavdevice}
 @end ifhtml
 
 @ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavdevice(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavdevice(3)
 @end ifnothtml
 
 @include authors.texi

doc/ffmpeg-filters.texi

@@ -23,12 +23,12 @@ libavfilter library.
 @chapter See Also
 
 @ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
 @url{libavfilter.html,libavfilter}
 @end ifhtml
 
 @ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavfilter(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavfilter(3)
 @end ifnothtml
 
 @include authors.texi

doc/ffmpeg-formats.texi

@@ -23,12 +23,12 @@ provided by the libavformat library.
 @chapter See Also
 
 @ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
 @url{libavformat.html,libavformat}
 @end ifhtml
 
 @ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavformat(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
 @end ifnothtml
 
 @include authors.texi

doc/ffmpeg-protocols.texi

@@ -23,12 +23,12 @@ libavformat library.
 @chapter See Also
 
 @ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
 @url{libavformat.html,libavformat}
 @end ifhtml
 
 @ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavformat(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
 @end ifnothtml
 
 @include authors.texi