diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2011-06-09 03:35:50 +0200 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2011-08-21 11:08:27 +0200 |
| commit | 00c5cf4beb0e45e936544a5766b56e241ae03234 (patch) | |
| tree | ee4aab975f08f3128dc85280963af8a81b855274 /libavcodec/mjpegdec.c | |
| parent | a05219d801cdf0fd83301e893301e9f6ba0ab6ed (diff) | |
| download | ffmpeg-00c5cf4beb0e45e936544a5766b56e241ae03234.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 8c0fa61a9713a1306fca7997dd04d72ea1f060ea)
Diffstat (limited to 'libavcodec/mjpegdec.c')
| -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 391d58de6b..3f6b1f111e 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; } |