forked from tTh/FloatImg
this is romulian saturation control
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@ -63,7 +63,8 @@ void fimg_print_sizeof(void);
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void fimg_printhead(FloatImg *h);
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int fimg_describe(FloatImg *head, char *txt);
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char *fimg_str_type(int type);
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int fimg_plot_rgb (FloatImg *head, int x, int y, float r, float g, float b);
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int fimg_plot_rgb (FloatImg *head, int x, int y,
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float r, float g, float b);
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int fimg_get_rgb(FloatImg *head, int x, int y, float *rgb);
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int fimg_put_rgb(FloatImg *head, int x, int y, float *rgb);
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int fimg_clear(FloatImg *fimg);
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@ -119,6 +120,10 @@ int fimg_power_2(FloatImg *s, FloatImg *d, double maxval);
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int fimg_cos_01(FloatImg *s, FloatImg *d, double maxval);
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int fimg_cos_010(FloatImg *s, FloatImg *d, double maxval);
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int fimg_mix_rgb_gray(FloatImg *img, float mix);
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/* module funcs/geometry.c */
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int fimg_equalize_compute(FloatImg *src, void *vptr);
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@ -4,7 +4,7 @@ COPT = -Wall -fpic -g -no-pie -DDEBUG_LEVEL=0
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DEPS = ../floatimg.h Makefile
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OBJS = fimg-png.o fimg-tiff.o misc-plots.o filtrage.o utils.o \
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fimg-libpnm.o rampes.o sfx0.o geometry.o rotate.o \
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equalize.o fimg-fits.o
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equalize.o fimg-fits.o saturation.o
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#---------------------------------------------------------------
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@ -41,6 +41,9 @@ geometry.o: geometry.c $(DEPS)
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rotate.o: rotate.c $(DEPS)
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gcc $(COPT) -c $<
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saturation.o: saturation.c $(DEPS)
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gcc $(COPT) -c $<
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equalize.o: equalize.c $(DEPS)
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gcc $(COPT) -c $<
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@ -0,0 +1,44 @@
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/*
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* FloatImg library from tTh
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*/
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#include <stdio.h>
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#include "../floatimg.h"
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/* -------------------------------------------------------------- */
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/* global vars from main
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*/
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extern int verbosity;
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/* -------------------------------------------------------------- */
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int fimg_mix_rgb_gray(FloatImg *img, float mix)
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{
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int x, y, p;
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float gr;
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if (FIMG_TYPE_RGB != img->type) {
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fprintf(stderr, "%s bad type\n", __func__);
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return -6;
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}
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for (y=0; y<img->height; y++) {
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p = y * img->width;
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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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img->R[p] = ((gr * mix) + (img->R[p] * (1.0-mix))) / 2.0;
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img->G[p] = ((gr * mix) + (img->G[p] * (1.0-mix))) / 2.0;
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img->B[p] = ((gr * mix) + (img->B[p] * (1.0-mix))) / 2.0;
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p++; /* next pixel in the row */
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}
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}
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return 0;
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}
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/* -------------------------------------------------------------- */
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