forked from tTh/FloatImg
sorry again...
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@ -1,5 +1,5 @@
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/*
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/*
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* FloatImg library from tTh
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* FloatImg library from tTh - ugly code inside
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*/
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*/
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#include <stdio.h>
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#include <stdio.h>
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@ -12,7 +12,10 @@
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extern int verbosity;
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extern int verbosity;
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/* -------------------------------------------------------------- */
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/* -------------------------------------------------------------- */
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/*
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* parameter mix is between 0.0 and 1.0 but other
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* values give sometime good vibrations.
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*/
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int fimg_mix_rgb_gray(FloatImg *img, float mix)
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int fimg_mix_rgb_gray(FloatImg *img, float mix)
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{
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{
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int x, y, p;
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int x, y, p;
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@ -24,7 +27,8 @@ if (FIMG_TYPE_RGB != img->type) {
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}
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}
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for (y=0; y<img->height; y++) {
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for (y=0; y<img->height; y++) {
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p = y * img->width;
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p = y * img->width; /* first pixel of the row */
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for (x=0; x<img->width; x++) {
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for (x=0; x<img->width; x++) {
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gr = (img->R[p] + img->G[p] + img->R[p]) / 3.0;
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gr = (img->R[p] + img->G[p] + img->R[p]) / 3.0;
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@ -42,17 +46,21 @@ return 0;
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}
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}
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/* -------------------------------------------------------------- */
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/* -------------------------------------------------------------- */
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/*
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* The third parameter was a six value array with min and max
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* values maybe computed by the 'fimg_get_minmax_rgb' function.
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*/
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int fimg_shift_to_zero(FloatImg *s, FloatImg *d, float coefs[6])
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int fimg_shift_to_zero(FloatImg *s, FloatImg *d, float coefs[6])
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{
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{
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int sz, idx;
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int sz, idx;
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sz = s->width * s->height;
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if (FIMG_TYPE_RGB != s->type) {
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if (FIMG_TYPE_RGB != s->type) {
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fprintf(stderr, "%s bad type\n", __func__);
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fprintf(stderr, "%s bad type\n", __func__);
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return -6;
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return -6;
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}
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}
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sz = s->width * s->height;
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for (idx=0; idx<sz; idx++) {
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for (idx=0; idx<sz; idx++) {
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d->R[idx] = s->R[idx] - coefs[0];
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d->R[idx] = s->R[idx] - coefs[0];
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d->G[idx] = s->G[idx] - coefs[2];
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d->G[idx] = s->G[idx] - coefs[2];
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