102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
/*
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* luts15bits.c - new 1 mars 2008 - ave St Exupery
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*
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* voir aussi "calcluts.c"
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef NEED_ALLOCA_H
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#include <alloca.h>
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#endif
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#include "../tthimage.h"
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/*::------------------------------------------------------------------::*/
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int Image_lut15_fill_0(int r[32768], int *g, int *b)
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{
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int foo;
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for (foo=0; foo<32768; foo++)
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{
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r[foo] = foo;
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g[foo] = 0;
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b[foo] = 32768 - foo;
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}
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return FUNC_IS_ALPHA;
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}
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/*::------------------------------------------------------------------::*/
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int Image_lut15_fill_1(int *r, int *g, int *b)
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{
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int foo;
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for (foo=0; foo<32768; foo++)
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{
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r[foo] = foo;
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g[foo] = 12345;
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b[foo] = 32768 - foo;
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}
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return FUNC_IS_ALPHA;
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}
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/*::------------------------------------------------------------------::*/
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/*::------------------------------------------------------------------::*/
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int Image_lut15_essai(char *hfname, char *tganame, int ka)
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{
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Image_Desc *src, *dst;
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int x, y, h;
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int r, g, b;
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int lr[32768];
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int lg[32768];
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int lb[32768];
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#if DEBUG_LEVEL
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fprintf(stderr, "'%s' : premier essai pour les LUTs en 15 bits\n", __func__);
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fprintf(stderr, " image source : %s\n", hfname);
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fprintf(stderr, " image resultat : %s\n", tganame);
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fprintf(stderr, " dummy argument : %d\n", ka);
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#endif
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if (ka) {
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fprintf(stderr, "%s : ka (%d) not zero !\n", __func__, ka);
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return WRONG_FLAG;
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}
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if ( NULL==(src=Image_TGA_alloc_load(hfname)) )
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{
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fprintf(stderr, "%s: err load %s, aborting\n", __func__, hfname);
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abort();
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}
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/* convert the source image to an valid height-field */
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Image_hf15_rgb2hf(src, src, 0);
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/* save a 16 bits pgm for visual check */
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Image_hf15_save_PGM("aaaa-hf15-lut15.pgm", src, __FILE__);
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if ( NULL==(dst=Image_clone(src, 0)) )
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{
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abort();
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}
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for (y=0; y<src->height; y++)
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{
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for (x=0; x<src->width; x++)
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{
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h = Image_hf15_height(src, x, y);
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r = lr[h] / 256;
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g = lg[h] / 255;
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b = lb[h] / 255;
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Image_plotRGB(dst, x, y, r, g, b);
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}
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}
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Image_TGA_save(tganame, dst, 0);
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return FULL_NUCKED;
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}
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/*::------------------------------------------------------------------::*/
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