tTh/FloatImg
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useless comments

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tth 2019-12-21 12:37:26 +01:00
parent 3712ef9efe
commit 29fff3c578
2 changed files with 9 additions and 0 deletions
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7
lib/operators.c
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@ -15,6 +15,10 @@
extern int verbosity; /* must be declared around main() */ extern int verbosity; /* must be declared around main() */
/* ---------------------------------------------------------------- */ /* ---------------------------------------------------------------- */
/*
* A + B -> D
* why is this func so slow ?
*/
int fimg_add(FloatImg *a, FloatImg *b, FloatImg *d) int fimg_add(FloatImg *a, FloatImg *b, FloatImg *d)
{ {
int idx, nbiter; int idx, nbiter;
@ -57,6 +61,9 @@ if (3 != a->type || 3 != b->type || 3 != d->type) {
nbiter = a->width * a->height; nbiter = a->width * a->height;
/* maybe we can speedup this loop for
* avoiding the cache strashing ?
*/
for (idx=0; idx<nbiter; idx++) { for (idx=0; idx<nbiter; idx++) {
d->R[idx] = fabs(a->R[idx] - b->R[idx]); d->R[idx] = fabs(a->R[idx] - b->R[idx]);
d->G[idx] = fabs(a->G[idx] - b->G[idx]); d->G[idx] = fabs(a->G[idx] - b->G[idx]);

2
v4l2/rgb2fimg.c
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@ -41,6 +41,8 @@ for (y=0; y<h; y++) {
r = (float)*src++; r = (float)*src++;
g = (float)*src++; g = (float)*src++;
b = (float)*src++; b = (float)*src++;
/* may be, here, we can speed up the job */
fimg_add_rgb(d, xx, yy, r, g, b); fimg_add_rgb(d, xx, yy, r, g, b);
} }
} }