[FFmpeg-cvslog] avcodec/dcadec: Search and decode frame in case it starts later in a packet
Michael Niedermayer
git at videolan.org
Sat May 23 16:38:42 CEST 2015
ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sat May 23 16:23:52 2015 +0200| [4ae15605f6298d8369a1f1374596b52a3839c703] | committer: Michael Niedermayer
avcodec/dcadec: Search and decode frame in case it starts later in a packet
This fixes decoding the first frame of some dts files
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4ae15605f6298d8369a1f1374596b52a3839c703
---
libavcodec/dcadec.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/libavcodec/dcadec.c b/libavcodec/dcadec.c
index 91db893..3ea1bcf 100644
--- a/libavcodec/dcadec.c
+++ b/libavcodec/dcadec.c
@@ -1487,8 +1487,11 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
s->exss_ext_mask = 0;
s->xch_present = 0;
- s->dca_buffer_size = avpriv_dca_convert_bitstream(buf, buf_size, s->dca_buffer,
- DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE);
+ s->dca_buffer_size = AVERROR_INVALIDDATA;
+ for (i = 0; i < buf_size - 3 && s->dca_buffer_size == AVERROR_INVALIDDATA; i++)
+ s->dca_buffer_size = avpriv_dca_convert_bitstream(buf + i, buf_size - i, s->dca_buffer,
+ DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE);
+
if (s->dca_buffer_size == AVERROR_INVALIDDATA) {
av_log(avctx, AV_LOG_ERROR, "Not a valid DCA frame\n");
return AVERROR_INVALIDDATA;
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