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roqvideodec: check dimensions validity

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-29 15:18:17 +01:00
parent a9236b87b7
commit 3ae6104511

View File

@ -170,6 +170,12 @@ 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_ask_for_sample(avctx, "dimensions not being a multiple of 16 are unsupported\n");
return AVERROR_PATCHWELCOME;
}
s->width = avctx->width;
s->height = avctx->height;
avcodec_get_frame_defaults(&s->frames[0]);