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Merge remote-tracking branch 'qatar/master'

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* qatar/master: (51 commits)
  cin audio: use sign_extend() instead of casting to int16_t
  cin audio: restructure decoding loop to avoid a separate counter variable
  cin audio: use local variable for delta value
  cin audio: remove unneeded cast from void*
  cin audio: validate the channel count
  cin audio: remove unneeded AVCodecContext pointer from CinAudioContext
  dsicin: fix several audio-related fields in the CIN demuxer
  flacdec: use av_get_bytes_per_sample() to get sample size
  dca: handle errors from dca_decode_block()
  dca: return error if the frame header is invalid
  dca: return proper error codes instead of -1
  utvideo: handle empty Huffman trees
  binkaudio: change short to int16_t
  binkaudio: only decode one block at a time.
  binkaudio: store interleaved overlap samples in BinkAudioContext.
  binkaudio: pre-calculate quantization factors
  binkaudio: add some buffer overread checks.
  atrac3: support float or int16 output using request_sample_fmt
  atrac3: add CODEC_CAP_SUBFRAMES capability
  atrac3: return appropriate error codes instead of -1
  ...

Conflicts:
	libavcodec/atrac1.c
	libavcodec/dca.c
	libavformat/mov.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2011-10-30 01:33:41 +02:00
parent 1af3571e05 7d1b17b833
commit d17e7070a0
14 changed files with 492 additions and 276 deletions
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42
libavcodec/dsicinav.c
View File

@@ -26,6 +26,7 @@
#include "avcodec.h"
#include "bytestream.h"
#include "mathops.h"
typedef enum CinVideoBitmapIndex {
@@ -43,7 +44,6 @@ typedef struct CinVideoContext {
} CinVideoContext;
typedef struct CinAudioContext {
AVCodecContext *avctx;
int initial_decode_frame;
int delta;
} CinAudioContext;
@@ -309,7 +309,11 @@ static av_cold int cinaudio_decode_init(AVCodecContext *avctx)
{
CinAudioContext *cin = avctx->priv_data;
cin->avctx = avctx;
if (avctx->channels != 1) {
av_log_ask_for_sample(avctx, "Number of channels is not supported\n");
return AVERROR_PATCHWELCOME;
}
cin->initial_decode_frame = 1;
cin->delta = 0;
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
@@ -322,29 +326,35 @@ static int cinaudio_decode_frame(AVCodecContext *avctx,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
CinAudioContext *cin = avctx->priv_data;
const uint8_t *src = buf;
int16_t *samples = (int16_t *)data;
const uint8_t *buf_end = buf + avpkt->size;
int16_t *samples = data;
int delta, out_size;
buf_size = FFMIN(buf_size, *data_size/2);
out_size = (avpkt->size - cin->initial_decode_frame) *
av_get_bytes_per_sample(avctx->sample_fmt);
if (*data_size < out_size) {
av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
return AVERROR(EINVAL);
}
delta = cin->delta;
if (cin->initial_decode_frame) {
cin->initial_decode_frame = 0;
cin->delta = (int16_t)AV_RL16(src); src += 2;
*samples++ = cin->delta;
buf_size -= 2;
delta = sign_extend(AV_RL16(buf), 16);
buf += 2;
*samples++ = delta;
}
while (buf_size > 0) {
cin->delta += cinaudio_delta16_table[*src++];
cin->delta = av_clip_int16(cin->delta);
*samples++ = cin->delta;
--buf_size;
while (buf < buf_end) {
delta += cinaudio_delta16_table[*buf++];
delta = av_clip_int16(delta);
*samples++ = delta;
}
cin->delta = delta;
*data_size = (uint8_t *)samples - (uint8_t *)data;
*data_size = out_size;
return src - buf;
return avpkt->size;
}