convert external image for test tile and blit hardcoded grid

[retrocrawl] / tools / conv_gimp.c

diff --git a/tools/conv_gimp.c b/tools/conv_gimp.c
new file mode 100644 (file)
index 0000000..b124d37
--- /dev/null
+++ b/tools/conv_gimp.c
@@ -0,0 +1,71 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include HDRFILE
+
+#define NBPL   5
+
+int main(int argc, char **argv)
+{
+       int i, j, k, palsz;
+       FILE *fp;
+       char *buf;
+       unsigned char *src;
+
+       if(!argv[1]) {
+               fprintf(stderr, "missing argument: output name\n");
+               return 1;
+       }
+
+       if(!(buf = malloc(strlen(argv[1]) + 4))) {
+               perror("malloc failed");
+               return 1;
+       }
+       sprintf(buf, "%s.img", argv[1]);
+
+       if(!(fp = fopen(buf, "wb"))) {
+               perror("failed to open output file");
+               return 1;
+       }
+
+       src = header_data;
+
+       printf("image: %dx%d\n", width, height);
+       for(i=0; i<height; i++) {
+               for(j=0; j<NBPL; j++) {
+                       int bit = j;
+                       unsigned char out = 0;
+                       for(k=0; k<width; k++) {
+                               out = (out << 1) | ((src[k] >> bit) & 1);
+                               if((k & 7) == 7) {
+                                       fputc(out, fp);
+                               }
+                       }
+               }
+               src += width;
+       }
+       fclose(fp);
+
+       sprintf(buf, "%s.pal", argv[1]);
+       if(!(fp = fopen(buf, "wb"))) {
+               perror("failed to open palette output file");
+               return 1;
+       }
+
+       palsz = 1 << NBPL;
+
+       printf("palette:\n");
+       for(i=0; i<palsz; i++) {
+               int r = header_data_cmap[i][0] >> 4;
+               int g = header_data_cmap[i][1] >> 4;
+               int b = header_data_cmap[i][2] >> 4;
+               unsigned int col = ((r & 0xf) << 8) | ((g & 0xf) << 4) | (b & 0xf);
+               printf("0x%03x\n", col);
+               fputc(col >> 8, fp);
+               fputc(col, fp);
+       }
+       fclose(fp);
+
+       return 0;
+}