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hevc: Do not right shift a negative value in get_pcm

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This commit is contained in:
Luca Barbato 2014-02-19 22:21:43 +01:00
parent 50c988aa6d
commit ff486c0f7f
1 changed files with 8 additions and 4 deletions
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12
libavcodec/hevc_filter.c
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@ -317,11 +317,15 @@ static void sao_filter_CTB(HEVCContext *s, int x, int y)
static int get_pcm(HEVCContext *s, int x, int y)
{
int log2_min_pu_size = s->sps->log2_min_pu_size;
int x_pu = x >> log2_min_pu_size;
int y_pu = y >> log2_min_pu_size;
int x_pu, y_pu;
if (x < 0 || x_pu >= s->sps->min_pu_width ||
y < 0 || y_pu >= s->sps->min_pu_height)
if (x < 0 || y < 0)
return 2;
x_pu = x >> log2_min_pu_size;
y_pu = y >> log2_min_pu_size;
if (x_pu >= s->sps->min_pu_width || y_pu >= s->sps->min_pu_height)
return 2;
return s->is_pcm[y_pu * s->sps->min_pu_width + x_pu];
}