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avcodec/h264: finish previous slices before switching to single thread mode

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Fixes null pointer dereference
Fixes Ticket4438

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit c4b2017ba6)

Conflicts:

	libavcodec/h264.c
(cherry picked from commit 09cc7aee3f4d1bd1d7107d38520f782c62c14036)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-04-07 02:47:36 +02:00
parent 48f616ceee
commit 7fa861dfe0
1 changed files with 6 additions and 0 deletions
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6
libavcodec/h264.c
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@ -1736,6 +1736,12 @@ again:
av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
h->ref_count[0] = h->ref_count[1] = h->list_count = 0;
} else if (err == SLICE_SINGLETHREAD) {
if (context_count > 1) {
ret = ff_h264_execute_decode_slices(h, context_count - 1);
if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
goto end;
context_count = 0;
}
/* Slice could not be decoded in parallel mode, copy down
* NAL unit stuff to context 0 and restart. Note that
* rbsp_buffer is not transferred, but since we no longer