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h264: Fix null pointer dereference with disabled error concealment

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Fixes Ticket2551

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-06-24 16:05:19 +02:00
parent a46e578dda
commit bbe26eff22
1 changed files with 1 additions and 1 deletions
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2
libavcodec/h264.c
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@ -4287,7 +4287,7 @@ static int decode_slice(struct AVCodecContext *avctx, void *arg)
avctx->codec_id != AV_CODEC_ID_H264 ||
(CONFIG_GRAY && (h->flags & CODEC_FLAG_GRAY));
if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME) {
if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && h->er.error_status_table) {
const int start_i = av_clip(h->resync_mb_x + h->resync_mb_y * h->mb_width, 0, h->mb_num - 1);
if (start_i) {
int prev_status = h->er.error_status_table[h->er.mb_index2xy[start_i - 1]];