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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-06-13 17:12:00 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-06-13 18:40:21 +0200 |
| commit | dffb85a98271826f6b38835b3c38399704bca3c0 (patch) | |
| tree | 641098a0129a5dc0def19f1e5f1daad673eb348d /libavcodec/mpegvideo.c | |
| parent | 4a0ec85b85090c5ed7af232007d3e11308c926dc (diff) | |
| download | ffmpeg-dffb85a98271826f6b38835b3c38399704bca3c0.tar.gz | |
avcodec/mpegvideo: check that linesize is not too small
Note linesize is rounded up to at least a multiple of 8
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/mpegvideo.c')
| -rw-r--r-- | libavcodec/mpegvideo.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c index 1cef34ab0b..97f22d2dc0 100644 --- a/libavcodec/mpegvideo.c +++ b/libavcodec/mpegvideo.c @@ -434,6 +434,11 @@ static int frame_size_alloc(MpegEncContext *s, int linesize) { int alloc_size = FFALIGN(FFABS(linesize) + 64, 32); + if (linesize < 24) { + av_log(s->avctx, AV_LOG_ERROR, "Image too small, temporary buffers cannot function\n"); + return AVERROR_PATCHWELCOME; + } + // edge emu needs blocksize + filter length - 1 // (= 17x17 for halfpel / 21x21 for h264) // VC1 computes luma and chroma simultaneously and needs 19X19 + 9x9 |