#include <assert.h>
#include "image.h"
+enum {
+ MODE_PIXELS,
+ MODE_CMAP,
+ MODE_INFO,
+ MODE_SHADE_CMAP,
+ MODE_SHADE_LUT
+};
+
void print_usage(const char *argv0);
int main(int argc, char **argv)
int num_infiles = 0;
struct image img, tmpimg;
FILE *out = stdout;
+ struct cmapent shade_cmap[256] = {0};
+ int *shade_lut = 0;
+ int shade_levels = 8;
for(i=1; i<argc; i++) {
if(argv[i][0] == '-') {
if(argv[i][2] == 0) {
switch(argv[i][1]) {
case 'p':
- mode = 0;
+ mode = MODE_PIXELS;
break;
case 'c':
- mode = 1;
+ mode = MODE_CMAP;
break;
case 'i':
- mode = 2;
+ mode = MODE_INFO;
+ break;
+
+ case 'C':
+ mode = MODE_SHADE_CMAP;
+ break;
+
+ case 'S':
+ mode = MODE_SHADE_LUT;
+ break;
+
+ case 's':
+ if(!argv[++i] || (shade_levels = atoi(argv[i])) == 0) {
+ fprintf(stderr, "-s must be followed by the number of shade levels\n");
+ return 1;
+ }
break;
case 't':
}
switch(mode) {
- case 0:
+ case MODE_PIXELS:
fwrite(img.pixels, 1, img.scansz * img.height, out);
break;
- case 1:
+ case MODE_CMAP:
if(text) {
for(i=0; i<img.cmap_ncolors; i++) {
printf("%d %d %d\n", img.cmap[i].r, img.cmap[i].g, img.cmap[i].b);
}
break;
- case 2:
+ case MODE_INFO:
printf("size: %dx%d\n", img.width, img.height);
printf("bit depth: %d\n", img.bpp);
printf("scanline size: %d bytes\n", img.scansz);
printf("color channels: %d\n", img.nchan);
}
break;
+
+ case MODE_SHADE_LUT:
+ if(!(shade_lut = malloc(256 * shade_levels * sizeof *shade_lut))) {
+ fprintf(stderr, "failed to allocate shading look-up table\n");
+ return 1;
+ }
+ case MODE_SHADE_CMAP:
+ if(!img.cmap_ncolors) {
+ fprintf(stderr, "can't generate shade levels for non-indexed images\n");
+ return 1;
+ }
+ if(gen_shade_lut(&img, shade_levels, 256, shade_cmap, shade_lut) == -1) {
+ return 1;
+ }
+ if(mode == MODE_SHADE_CMAP) {
+ fwrite(shade_cmap, sizeof shade_cmap, 1, out);
+ } else {
+ for(i=0; i<img.cmap_ncolors * shade_levels; i++) {
+ fputc(shade_lut[i], out);
+ }
+ }
+ break;
}
fclose(out);
printf(" -o <output file>: specify output file (default: stdout)\n");
printf(" -p: dump pixels (default)\n");
printf(" -c: dump colormap (palette) entries\n");
+ printf(" -C: generate shading colormap\n");
+ printf(" -S: generate shading LUT\n");
+ printf(" -s <shade levels>: used in conjunction with -C or -S (default: 8)\n");
printf(" -i: print image information\n");
printf(" -t: dump as text\n");
printf(" -n: swap the order of nibbles (for 4bpp)\n");