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avcodec/hevc.c: for big negative mvy value, should wait line 0 of ref frame due to edge extending

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Reviewed-by: Mickaël Raulet <mraulet@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Changjiang Wei 2014-11-11 10:39:39 +08:00 committed by Michael Niedermayer
parent cfaa233962
commit 6f2068e626
1 changed files with 1 additions and 1 deletions
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libavcodec/hevc.c
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@ -1571,7 +1571,7 @@ static void chroma_mc_bi(HEVCContext *s, uint8_t *dst0, ptrdiff_t dststride, AVF
static void hevc_await_progress(HEVCContext *s, HEVCFrame *ref,
const Mv *mv, int y0, int height)
{
int y = (mv->y >> 2) + y0 + height + 9;
int y = FFMAX(0, (mv->y >> 2) + y0 + height + 9);
if (s->threads_type == FF_THREAD_FRAME )
ff_thread_await_progress(&ref->tf, y, 0);