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avcodec/error_resilience: Factor block parity check out

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This makes the code noticably faster when there are lots of blocks

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-12-25 20:16:00 +01:00
parent c6c888e996
commit cafc72bd7b
1 changed files with 1 additions and 4 deletions
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5
libavcodec/error_resilience.c
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@ -450,7 +450,7 @@ static void guess_mv(ERContext *s)
changed = 0;
for (mb_y = 0; mb_y < mb_height; mb_y++) {
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
for (mb_x = (mb_y ^ pass) & 1; mb_x < s->mb_width; mb_x+=2) {
const int mb_xy = mb_x + mb_y * s->mb_stride;
int mv_predictor[8][2] = { { 0 } };
int ref[8] = { 0 };
@ -461,9 +461,6 @@ static void guess_mv(ERContext *s)
const int mot_index = (mb_x + mb_y * mot_stride) * mot_step;
int prev_x = 0, prev_y = 0, prev_ref = 0;
if ((mb_x ^ mb_y ^ pass) & 1)
continue;
if (fixed[mb_xy] == MV_FROZEN)
continue;
av_assert1(!IS_INTRA(s->cur_pic.mb_type[mb_xy]));