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| author | Michael Niedermayer <michael@niedermayer.cc> | 2015-09-11 13:28:51 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-11-26 16:58:32 +0100 |
| commit | 93fc958f22499c37bfa5fb9bfd89e2eb75df3bc7 (patch) | |
| tree | 87a013060671ea7ec3d8dbab15cc334174055f8c | |
| parent | 24e9640c049bf5d89771519715016f8d92fd8152 (diff) | |
| download | ffmpeg-93fc958f22499c37bfa5fb9bfd89e2eb75df3bc7.tar.gz | |
avcodec/mjpegdec: Fix decoding RGBA RCT LJPEG
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 055e56e9f76da3298f1b59bf5ea46f570e844600)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mjpegdec.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index af38364e78..1edbe5df9c 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -971,7 +971,14 @@ static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int p skip_bits(&s->gb, 16); /* skip RSTn */ } } - if (s->nb_components == 4) { + if (s->rct && s->nb_components == 4) { + for (mb_x = 0; mb_x < s->mb_width; mb_x++) { + ptr[4*mb_x + 2] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200) >> 2); + ptr[4*mb_x + 1] = buffer[mb_x][1] + ptr[4*mb_x + 2]; + ptr[4*mb_x + 3] = buffer[mb_x][2] + ptr[4*mb_x + 2]; + ptr[4*mb_x + 0] = buffer[mb_x][3]; + } + } else if (s->nb_components == 4) { for(i=0; i<nb_components; i++) { int c= s->comp_index[i]; if (s->bits <= 8) { |