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vf_lut: optimize planar case

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2500 -> 1900 cpu cycles

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-03 17:49:04 +02:00
parent 24e90d0c05
commit 79a1d98676
1 changed files with 4 additions and 2 deletions
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6
libavfilter/vf_lut.c
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@ -318,8 +318,10 @@ static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
outrow = outpic->data[plane] + (y>>vsub) * outpic->linesize[plane];
for (i = 0; i < h>>vsub; i ++) {
for (j = 0; j < inlink->w>>hsub; j++)
outrow[j] = lut->lut[plane][inrow[j]];
const uint8_t *tab = lut->lut[plane];
int w = inlink->w>>hsub;
for (j = 0; j < w; j++)
outrow[j] = tab[inrow[j]];
inrow += inpic ->linesize[plane];
outrow += outpic->linesize[plane];
}