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vc1dec: require a minimum of 2x2 for the edge pos. Avoid assertion failure

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-14 19:03:07 +01:00
parent dbc44667ce
commit ab8517b891
1 changed files with 2 additions and 0 deletions
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2
libavcodec/vc1dec.c
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@ -5498,6 +5498,8 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
s->low_delay = !avctx->has_b_frames || v->res_sprite;
if (v->profile == PROFILE_ADVANCED) {
if(avctx->coded_width<=1 || avctx->coded_height<=1)
goto err;
s->h_edge_pos = avctx->coded_width;
s->v_edge_pos = avctx->coded_height;
}