forked from tTh/FloatImg
93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
/*
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* incrustator experimental
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "../floatimg.h"
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#include "incrustator.h"
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extern int verbosity;
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/* ---------------------------------------------------------------- */
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static int check_boundaries(FloatImg *from, FloatImg *to, FimgArea51 *a51)
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{
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %p %p )\n", __func__, from, to, a51);
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fimg_printdims("from", from);
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fimg_printdims("to ", to);
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#endif
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/* just a small molly-guard */
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if ( (a51->w < 0) || (a51->h < 0) ) {
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fprintf(stderr, "%s: fubar on %p\n", __func__, a51);
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abort(); /* FY Bro ! */
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}
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return -1;
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}
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/* ---------------------------------------------------------------- */
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static int move_pixels(FloatImg *from, FloatImg *to,
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FimgArea51 *a51, int flags)
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{
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %p %p 0x%04x )\n", __func__,
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from, to, a51, flags);
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#endif
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return -1;
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}
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/* ---------------------------------------------------------------- */
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int incrustator_0(FloatImg *psrc, FloatImg *pdst,
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int xpos, int ypos, int flags)
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{
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int y, srcpos, dstpos, szl;
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int foo;
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FimgArea51 area;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %p %d %d 0x%04X\n", __func__, psrc, pdst,
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xpos, ypos, flags);
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#endif
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if (verbosity > 1) {
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fimg_describe(psrc, "source");
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fimg_describe(pdst, "destination");
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}
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/* check boudaries */
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area.x = xpos; area.y = ypos;
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area.w = psrc->width; area.h = psrc->height;
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foo = check_boundaries(psrc, pdst, &area);
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if ( (xpos < 0) || (xpos > pdst->width - psrc->width) ||
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(ypos < 0) || (ypos > pdst->height - psrc->height) ) {
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fprintf(stderr, "%s: boudary error\n", __func__);
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return -2;
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}
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/* move all the data by looping over lines */
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srcpos = 0;
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dstpos = (ypos * pdst->width) + xpos;
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szl = psrc->width * sizeof(float);
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for (y=0; y<psrc->height; y++) {
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// fprintf(stderr, " %7d %7d %7d\n", y, srcpos, dstpos);
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memcpy(pdst->R + dstpos, psrc->R + srcpos, szl);
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memcpy(pdst->G + dstpos, psrc->G + srcpos, szl);
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memcpy(pdst->B + dstpos, psrc->B + srcpos, szl);
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srcpos += psrc->width;
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dstpos += pdst->width;
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}
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return 0;
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}
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/* ---------------------------------------------------------------- */
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