avcodec/avrndec: Use the AVFrame format instead of the context

Fixes out of array read Fixes: 20dd01398dee0f6d83d7e5410a2ae8eb/signal_sigsegv_39eeb1f_4001_62efbdf1c60748dabf1ec310b59525fd.mov Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago · ccba8aaff2
parent 6f520ce1a6
commit ccba8aaff2
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/avrndec.c
+++ b/libavcodec/avrndec.c
@ -113,7 +113,7 @@ static int decode_frame(AVCodecContext *avctx, void *data,
            int shift = p->height - avctx->height;
            int subsample_h, subsample_v;

-            av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &subsample_h, &subsample_v);
+            av_pix_fmt_get_chroma_sub_sample(p->format, &subsample_h, &subsample_v);

            p->data[0] += p->linesize[0] * shift;
            if (p->data[2]) {