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roqvideodec: check dimensions validity

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 3ae6104511)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-29 15:18:17 +01:00
parent a23a3dba25
commit fee26d352a
1 changed files with 6 additions and 0 deletions
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6
libavcodec/roqvideodec.c
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@ -158,6 +158,12 @@ static av_cold int roq_decode_init(AVCodecContext *avctx)
RoqContext *s = avctx->priv_data;
s->avctx = avctx;
if (avctx->width%16 || avctx->height%16) {
av_log(avctx, AV_LOG_ERROR, "dimensions not being a multiple of 16 are unsupported\n");
return AVERROR_PATCHWELCOME;
}
s->width = avctx->width;
s->height = avctx->height;
s->last_frame = &s->frames[0];