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lavfi/lut: simplify nested component stepping.

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This commit is contained in:
Clément Bœsch 2013-04-17 12:08:13 +02:00
parent 45f5bf917b
commit 4c6fa4ef45
1 changed files with 5 additions and 9 deletions
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14
libavfilter/vf_lut.c
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@ -285,15 +285,11 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
inrow = inrow0;
outrow = outrow0;
for (j = 0; j < w; j++) {
outrow[0] = tab[0][inrow[0]];
if (lut->step>1) {
outrow[1] = tab[1][inrow[1]];
if (lut->step>2) {
outrow[2] = tab[2][inrow[2]];
if (lut->step>3) {
outrow[3] = tab[3][inrow[3]];
}
}
switch (lut->step) {
case 3: outrow[3] = tab[3][inrow[3]]; // Fall-through
case 2: outrow[2] = tab[2][inrow[2]]; // Fall-through
case 1: outrow[1] = tab[1][inrow[1]]; // Fall-through
default: outrow[0] = tab[0][inrow[0]];
}
outrow += lut->step;
inrow += lut->step;