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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-03-20 00:29:34 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-03-20 00:29:34 +0100 |
| commit | e01f478dd25ec64cce5064de361881e60c9db651 (patch) | |
| tree | 75470d8813fac597d6815edb8a77fed7605f3793 | |
| parent | 479fb7b8afcf0711b93b48c7d634e9f464d8b336 (diff) | |
| download | ffmpeg-e01f478dd25ec64cce5064de361881e60c9db651.tar.gz | |
ffv1enc: Check context_model
Fixes crash
Found-by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/ffv1.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/ffv1.c b/libavcodec/ffv1.c index fb9b03041b..95beddf283 100644 --- a/libavcodec/ffv1.c +++ b/libavcodec/ffv1.c @@ -936,6 +936,10 @@ static av_cold int encode_init(AVCodecContext *avctx) if (s->transparency) { av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n"); } + if (avctx->context_model > 1U) { + av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model); + return AVERROR(EINVAL); + } for(i=0; i<256; i++){ s->quant_table_count=2; |