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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-06-09 03:35:50 +0200 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2011-07-23 19:19:13 +0200 |
| commit | 8c0fa61a9713a1306fca7997dd04d72ea1f060ea (patch) | |
| tree | 317c3d8be1f4c38d9d54bb5a45f661666200139c | |
| parent | b4cfb8254eeeb2fc0aa2c0c36a5ede208af47a79 (diff) | |
| download | ffmpeg-8c0fa61a9713a1306fca7997dd04d72ea1f060ea.tar.gz | |
jpegdec: actually search for and parse RSTn
Fixes decoding of MJPEG files produced by some UVC Logitec web cameras,
such as "Notebook Pro" and "HD C910".
References:
http://trac.videolan.org/vlc/ticket/4215
http://ffmpeg.org/trac/ffmpeg/ticket/267
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Reviewed-by: Kostya <kostya.shishkov@gmail.com>
(cherry picked from commit 7b8ed831eb8432d202dad16dedc1758b018bb1fa)
| -rw-r--r-- | libavcodec/mjpegdec.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index b28fdf8549..7eea6d78aa 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -879,9 +879,12 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i } } - if (s->restart_interval && !--s->restart_count) { + if (s->restart_interval && show_bits(&s->gb, 8) == 0xFF){ /* skip RSTn */ + --s->restart_count; align_get_bits(&s->gb); - skip_bits(&s->gb, 16); /* skip RSTn */ + while(show_bits(&s->gb, 8) == 0xFF) + skip_bits(&s->gb, 8); + skip_bits(&s->gb, 8); for (i=0; i<nb_components; i++) /* reset dc */ s->last_dc[i] = 1024; } |