diff options
| author | James Almer <jamrial@gmail.com> | 2016-11-05 17:46:52 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2016-11-08 13:43:53 -0300 |
| commit | 70c6a1bcf021b396c9186c4a46dd6c96cc9f59f8 (patch) | |
| tree | 6fe4179e298813ac11f59c309e20d929e5340560 /libavformat/matroskadec.c | |
| parent | 317be31eaf4f07b3bbeb703e8ee73d04b08a587c (diff) | |
avformat/matroskadec: fix DiscardPadding element parsing
If the value is negative then it means padding at the start of the packet
instead of at the end.
Based on a patch by Hendrik Leppkes.
Reviewed-by: James Zern <jzern-at-google.com@ffmpeg.org>
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavformat/matroskadec.c')
| -rw-r--r-- | libavformat/matroskadec.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index 32f5e49f0c..d2a691bc06 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -3082,10 +3082,14 @@ static int matroska_parse_frame(MatroskaDemuxContext *matroska, av_free(pkt); return AVERROR(ENOMEM); } - AV_WL32(side_data, 0); - AV_WL32(side_data + 4, av_rescale_q(discard_padding, + discard_padding = av_rescale_q(discard_padding, (AVRational){1, 1000000000}, - (AVRational){1, st->codecpar->sample_rate})); + (AVRational){1, st->codecpar->sample_rate}); + if (discard_padding > 0) { + AV_WL32(side_data + 4, discard_padding); + } else { + AV_WL32(side_data, -discard_padding); + } } if (track->ms_compat) |