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99fb257f58
Doubling the register width allowed to avoid a pshufb and a pmaddubsw. Old benchmarks: vp8_put_epel4_h6_c: 115.9 ( 1.00x) vp8_put_epel4_h6_ssse3: 20.2 ( 5.74x) vp8_put_epel4_h6v4_c: 276.3 ( 1.00x) vp8_put_epel4_h6v4_ssse3: 58.6 ( 4.71x) vp8_put_epel4_h6v6_c: 363.6 ( 1.00x) vp8_put_epel4_h6v6_ssse3: 62.5 ( 5.82x) New benchmarks: vp8_put_epel4_h6_c: 116.4 ( 1.00x) vp8_put_epel4_h6_ssse3: 16.0 ( 7.29x) vp8_put_epel4_h6v4_c: 280.9 ( 1.00x) vp8_put_epel4_h6v4_ssse3: 44.3 ( 6.33x) vp8_put_epel4_h6v6_c: 365.6 ( 1.00x) vp8_put_epel4_h6v6_ssse3: 53.1 ( 6.89x) Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides means to alter decoded audio and video through a directed graph of connected filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements color conversion and scaling routines.
Tools
- ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
- ffplay is a minimalistic multimedia player.
- ffprobe is a simple analysis tool to inspect multimedia content.
- Additional small tools such as
aviocat,ismindexandqt-faststart.
Documentation
The offline documentation is available in the doc/ directory.
The online documentation is available in the main website and in the wiki.
Examples
Coding examples are available in the doc/examples directory.
License
FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.
Contributing
Patches should be submitted to the ffmpeg-devel mailing list using
git format-patch or git send-email. Github pull requests should be
avoided because they are not part of our review process and will be ignored.