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cavsdec: Make sure a sequence header has been decoded before decoding pictures

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit e90a6846c2c006fbebd00e1f2789f4a86fafacef)
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Conflicts:
	libavcodec/cavsdec.c
This commit is contained in:
Martin Storsjö 2013-09-12 11:58:25 +03:00 committed by Luca Barbato
parent b9e90b36cd
commit 7f80928c0e
1 changed files with 5 additions and 0 deletions
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5
libavcodec/cavsdec.c
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@ -467,6 +467,11 @@ static int decode_pic(AVSContext *h) {
int skip_count = -1;
enum cavs_mb mb_type;
if (!h->top_qp) {
av_log(h, AV_LOG_ERROR, "No sequence header decoded yet\n");
return AVERROR_INVALIDDATA;
}
if (!s->context_initialized) {
s->avctx->idct_algo = FF_IDCT_CAVS;
if (MPV_common_init(s) < 0)