97 lines
1.9 KiB
C
97 lines
1.9 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <float.h>
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#include "../floatimg.h"
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/* -------------------------------------------------------------------- */
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int fimg_lissage_2x2(FloatImg *img)
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{
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int x, y, offset;
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float cr, cg, cb;
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float *pr, *pg, *pb;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p )\n", __func__, img);
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fprintf(stderr," type %d size %dx%d\n", img->type,
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img->width, img->height);
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#endif
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pr = img->R; pg = img->G; pb = img->B;
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for (y=1; y < img->height-1; y++) {
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for (x=1; x < img->width-1; x++) {
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offset = x + (y * img->width);
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cr = pr[offset] + pr[offset+1] +
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pr[offset+img->width] + pr[offset+img->width+1];
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cg = pg[offset] + pg[offset+1] +
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pg[offset+img->width] + pg[offset+img->width+1];
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cb = pb[offset] + pb[offset+1] +
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pb[offset+img->width] + pb[offset+img->width+1];
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pr[offset] = cr / 4.0;
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pg[offset] = cg / 4.0;
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pb[offset] = cb / 4.0;
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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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int fimg_killborders(FloatImg *img)
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{
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int idx, h, w, o;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p )\n", __func__, img);
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fprintf(stderr," type %d size %dx%d\n", img->type,
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img->width, img->height);
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#endif
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h = img->height; w = img->width;
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for (idx=0; idx<h; idx++) {
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#define FAST 1
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#if FAST
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img->R[idx*w] = 0.0;
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img->G[idx*w] = 0.0;
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img->B[idx*w] = 0.0;
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img->R[(idx*w)+w-1] = 0.0;
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img->G[(idx*w)+w-1] = 0.0;
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img->B[(idx*w)+w-1] = 0.0;
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#else
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fimg_plot_rgb(img, 0, idx, 0.0, 0.0, 0.0);
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fimg_plot_rgb(img, w-1, idx, 0.0, 0.0, 0.0);
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#endif
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}
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o = w * (h - 1);
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for (idx=0; idx<w; idx++) {
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#if FAST
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img->R[idx] = 0.0;
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img->G[idx] = 0.0;
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img->B[idx] = 0.0;
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img->R[idx+o] = 0.0;
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img->G[idx+o] = 0.0;
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img->B[idx+o] = 0.0;
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#else
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fimg_plot_rgb(img, idx, 0, 0.0, 0.0, 0.0);
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fimg_plot_rgb(img, idx, h-1, 0.0, 0.0, 0.0);
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#endif
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}
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return -1;
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}
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/* -------------------------------------------------------------------- */
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