diff options
author | Reimar Döffinger <Reimar.Doeffinger@gmx.de> | 2009-11-19 14:49:03 +0300 |
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committer | Reimar Döffinger <Reimar.Doeffinger@gmx.de> | 2009-11-19 14:49:03 +0300 |
commit | b711aaa2d8035b8a14bbdf0315cf2cea48dee890 (patch) | |
tree | 2ea93da1f02d1eb77fc4b1ed5acdea1093588d2c /libavcodec/mjpegdec.c | |
parent | 8a724ed84d954a36325a4b5fccb60f819bcfc3c0 (diff) |
Disable image flipping during JPEG decoding if CODEC_FLAG_EMU_EDGE is set
instead of either aborting on the assert or crashing due to writing beyond
the array due to insufficient padding.
Originally committed as revision 20552 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/mjpegdec.c')
-rw-r--r-- | libavcodec/mjpegdec.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 812d69bd06..3cf408dfe9 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -770,6 +770,10 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i uint8_t* data[MAX_COMPONENTS]; int linesize[MAX_COMPONENTS]; + if(s->flipped && s->avctx->flags & CODEC_FLAG_EMU_EDGE) { + av_log(s->avctx, AV_LOG_ERROR, "Can not flip image with CODEC_FLAG_EMU_EDGE set!\n"); + s->flipped = 0; + } for(i=0; i < nb_components; i++) { int c = s->comp_index[i]; data[c] = s->picture.data[c]; @@ -777,7 +781,6 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i s->coefs_finished[c] |= 1; if(s->flipped) { //picture should be flipped upside-down for this codec - assert(!(s->avctx->flags & CODEC_FLAG_EMU_EDGE)); data[c] += (linesize[c] * (s->v_scount[i] * (8 * s->mb_height -((s->height/s->v_max)&7)) - 1 )); linesize[c] *= -1; } |