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avcodec/hevcdec: constrained intra predict, do not check top left IS_INTRA if it's not available

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fix ticket: 8932

For poc 2, we have tile boundary at x = 640.
When we predict cu(640,912),the top left pixel is not avaliable to the cu.
So, we can not check it's intra or not. We need set top[-1] = top[0] directly.
see 8.4.4.2.1 for details

Signed-off-by: Xu Guangxin <oddstone@gmail.com>
Signed-off-by: Linjie Fu <linjie.justin.fu@gmail.com>
This commit is contained in:
Xu Guangxin 2020-10-16 21:57:34 +08:00 committed by Linjie Fu
parent c7ece8e26f
commit e5be4c5a88
1 changed files with 1 additions and 1 deletions
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2
libavcodec/hevcpred_template.c
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@ -214,7 +214,7 @@ do { \
while (j < size_max_x && !IS_INTRA(j, -1))
j++;
if (j > 0)
if (x0 > 0) {
if (cand_up_left) {
EXTEND_LEFT_CIP(top, j, j + 1);
} else {
EXTEND_LEFT_CIP(top, j, j);