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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-03-10 22:02:46 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-03-10 23:12:42 +0100 |
| commit | ecc31630f9a16ead4272a078c281afcb4db87f21 (patch) | |
| tree | eb23b9bc2a1e4f459a38ba66c4d8d5228fa77f39 /libavcodec/mjpegdec.c | |
| parent | 50f4f272fe3f09d757f5255c722ac34a4740f969 (diff) | |
| download | ffmpeg-ecc31630f9a16ead4272a078c281afcb4db87f21.tar.gz | |
mjpegb: Detect changing nb of planes in interlaced video.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/mjpegdec.c')
| -rw-r--r-- | libavcodec/mjpegdec.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 499ed4ca0e..19d44e4bd7 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -251,6 +251,12 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s) if (nb_components <= 0 || nb_components > MAX_COMPONENTS) return -1; + if (s->interlaced && (s->bottom_field == !s->interlace_polarity)) { + if (nb_components != s->nb_components) { + av_log(s->avctx, AV_LOG_ERROR, "nb_components changing in interlaced picture\n"); + return AVERROR_INVALIDDATA; + } + } if (s->ls && !(s->bits <= 8 || nb_components == 1)) { av_log(s->avctx, AV_LOG_ERROR, "only <= 8 bits/component or 16-bit gray accepted for JPEG-LS\n"); |