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avcodec/error_resilience: Merge surrounding status checks 

Simplifies code and is also faster

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-12-25 20:22:06 +01:00
parent cafc72bd7b
commit d5ecffbac6
1 changed files with 12 additions and 20 deletions
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32
libavcodec/error_resilience.c
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@ -376,7 +376,7 @@ static void v_block_filter(ERContext *s, uint8_t *dst, int w, int h,
static void guess_mv(ERContext *s)
{
uint8_t *fixed = s->er_temp_buffer;
#define MV_FROZEN 3
#define MV_FROZEN 4
#define MV_CHANGED 2
#define MV_UNCHANGED 1
const int mb_stride = s->mb_stride;
@ -467,27 +467,19 @@ static void guess_mv(ERContext *s)
av_assert1(s->last_pic.f && s->last_pic.f->data[0]);
j = 0;
if (mb_x > 0 && fixed[mb_xy - 1] == MV_FROZEN)
j = 1;
if (mb_x + 1 < mb_width && fixed[mb_xy + 1] == MV_FROZEN)
j = 1;
if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_FROZEN)
j = 1;
if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_FROZEN)
j = 1;
if (j == 0)
if (mb_x > 0)
j |= fixed[mb_xy - 1];
if (mb_x + 1 < mb_width)
j |= fixed[mb_xy + 1];
if (mb_y > 0)
j |= fixed[mb_xy - mb_stride];
if (mb_y + 1 < mb_height)
j |= fixed[mb_xy + mb_stride];
if (!(j & MV_FROZEN))
continue;
j = 0;
if (mb_x > 0 && fixed[mb_xy - 1 ] == MV_CHANGED)
j = 1;
if (mb_x + 1 < mb_width && fixed[mb_xy + 1 ] == MV_CHANGED)
j = 1;
if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_CHANGED)
j = 1;
if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_CHANGED)
j = 1;
if (j == 0 && pass > 1)
if (!(j & MV_CHANGED) && pass > 1)
continue;
none_left = 0;