tTh/FloatImg
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commit du soir, espoir

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Tonton Th
2019-09-10 01:31:48 +02:00
parent a7392df682
commit 2aabc8b26b
7 changed files with 140 additions and 47 deletions
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71
lib/interpolate.c
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@@ -1,3 +1,6 @@
/*
* interpolate.c
*/
#include <stdio.h>
#include <stdlib.h>
@@ -12,37 +15,53 @@ int verbosity;
/* ---------------------------------------------------------------- */
static int gray_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef)
{
return -1;
}
/* ---------------------------------------------------------------- */
int fimg_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef)
{
int picsize, idx;
if (FIMG_TYPE_RGB != s1->type) {
fprintf(stderr, "%s : bad src 1 type %d on %p\n", __func__,
s1->type, s1);
return -8;
}
if (FIMG_TYPE_RGB != s2->type) {
fprintf(stderr, "%s : bad src 2 type %d on %p\n", __func__,
s2->type, s2);
return -8;
}
if (FIMG_TYPE_RGB != d->type) {
fprintf(stderr, "%s : bad dst type %d on %p\n", __func__,
d->type, d);
return -9;
}
picsize = d->width * d->height * 3;
picsize = d->width * d->height;
for (idx=0; idx<picsize; idx++) {
d->R[idx] = (coef * s1->R[idx]) + ((1.0-coef) * s2->R[idx]);
}
return 0;
}
/* ---------------------------------------------------------------- */
static int rgb_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef)
{
int picsize, idx;
picsize = d->width * d->height * 3; /* rude hack ? */
for (idx=0; idx<picsize; idx++) {
d->R[idx] = (coef * s1->R[idx]) + ((1.0-coef) * s2->R[idx]);
}
return 0;
}
/* ---------------------------------------------------------------- */
int fimg_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef)
{
int foo;
foo = fimg_images_compatible(s1, s2);
if (foo) {
fprintf(stderr, "compat -> %d\n", foo);
return foo;
}
foo = fimg_images_compatible(s1, d);
if (foo) {
fprintf(stderr, "compat -> %d\n", foo);
return foo;
}
switch (s1->type) {
case FIMG_TYPE_GRAY:
gray_interpolate(s1, s2, d, coef); break;
case FIMG_TYPE_RGB:
rgb_interpolate(s1, s2, d, coef); break;
default:
fprintf(stderr, "%s, %d is a bad type\n", __func__, s1->type);
return -18;
}
return 0;