forked from tTh/FloatImg
171 lines
3.8 KiB
C
171 lines
3.8 KiB
C
/*
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* converting a floatimg to a machinable text file
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* an ugly software from tTh - february 2021
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "../floatimg.h"
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int verbosity;
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/* --------------------------------------------------------------------- */
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int export_as_machinable(FloatImg *src, char *fname, int steps, int flags)
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{
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FILE *fp;
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int x, y;
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float rgb[3];
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %25s ( %p '%s' %d )\n", __func__,
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src, fname, flags);
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#endif
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fp = NULL; /* molly guard */
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if (strcmp("-", fname)) { /* real file */
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fprintf(stderr, "real file '%s'\n", fname);
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}
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else {
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// fprintf(stderr, "kitchen sink\n");
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}
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fp = stdout; /* XXX */
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for (y=0; y<src->height; y+=steps) {
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for (x=0; x<src->width; x+=steps) {
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fimg_get_rgb(src, x, y, rgb);
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fprintf(fp, "%d %d ", x, y);
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fprintf(fp, "%f %f %f\n", rgb[0], rgb[1], rgb[2]);
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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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static int normalize(FloatImg *pimg, float vmax)
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{
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float mmv[6], maxi, coef;
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int foo, sz, idx;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %g )\n", __func__, pimg, vmax);
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#endif
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foo = fimg_get_minmax_rgb(pimg, mmv);
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if (foo) {
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fprintf(stderr, "%s: ABEND\n", __func__);
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abort();
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}
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maxi = mmv[1];
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if (mmv[3] > maxi) maxi = mmv[3];
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if (mmv[5] > maxi) maxi = mmv[5];
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coef = vmax / maxi;
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if (verbosity) {
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fprintf(stderr, "mins %f %f %f\n", mmv[0], mmv[2], mmv[4]);
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fprintf(stderr, "maxs %f %f %f\n", mmv[1], mmv[3], mmv[5]);
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fprintf(stderr, "coef = %f\n", coef);
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}
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sz = pimg->width * pimg->height;
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for (idx=0; idx<sz; idx++) {
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pimg->R[idx] *= coef;
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pimg->G[idx] *= coef;
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pimg->B[idx] *= coef;
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}
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return 0;
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}
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/* --------------------------------------------------------------------- */
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int convertir_fimg_en_machinable(char *srcname, char *dstname,
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int steps, float norm)
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{
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int foo, infos[3];
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FloatImg fimg;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %25s ( '%s' '%s' %d )\n", __func__,
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srcname, dstname, notused);
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#endif
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foo = fimg_fileinfos(srcname, infos);
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if (foo) {
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fprintf(stderr, "'%s' get dims -> %d\n", srcname, foo);
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return foo;
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}
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if (verbosity) {
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fprintf(stderr, "%s: image '%s' is %d x %d %s\n",
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__func__,
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srcname, infos[0], infos[1],
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fimg_str_type(infos[2]));
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}
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foo = fimg_create_from_dump(srcname, &fimg);
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if (foo) {
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fprintf(stderr, "create fimg from '%s' -> %d\n", srcname, foo);
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return -1;
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}
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if (verbosity) {
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fimg_describe(&fimg, srcname);
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fprintf(stderr, "normalize to %f\n", norm);
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}
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if (norm > 0.0) {
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// fprintf(stderr, "normalize %p\n", &fimg);
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foo = normalize(&fimg, norm);
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}
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foo = export_as_machinable(&fimg, dstname, steps, 0);
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if (foo) {
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fprintf(stderr,"%s: err %d on export\n", __func__, foo);
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}
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fimg_destroy(&fimg);
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return 0;
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}
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/* --------------------------------------------------------------------- */
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void help(int k)
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{
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puts("usage:\n\tfimg2text [options] foo.fimg > bar.csv");
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puts("options:");
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puts("\t-v\t\tincrease verbosity");
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puts("\t-n 3.14\t\tnormalize picture");
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puts("\t-s N\t\tsteps on x & y");
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if (verbosity) fimg_print_version(1);
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exit(0);
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}
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/* --------------------------------------------------------------------- */
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int main(int argc, char *argv[])
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{
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int foo, opt;
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int steps = 16;
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float norm_val = 222.0; /* < 0 : don't normalize */
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while ((opt = getopt(argc, argv, "hn:s:v")) != -1) {
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switch(opt) {
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case 'v': verbosity++; break;
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case 'h': help(1); exit(1);
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case 's': steps = atoi(optarg); break;
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case 'n': norm_val = atof(optarg); break;
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}
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}
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if (1 != argc-optind) {
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fprintf(stderr, "error: %s need one intput filename\n", argv[0]);
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exit(1);
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}
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foo = convertir_fimg_en_machinable(argv[optind], "-", steps, norm_val);
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if (foo) {
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fprintf(stderr, "%s : got a %d from convertor\n", argv[0], foo);
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}
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return 0;
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}
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/* --------------------------------------------------------------------- */
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