9 unsigned long rgb; /* on screen */
10 char c; /* canonical */
13 extern const CanonColourInfo canoncolourinfos[];
15 CanonImage *alloc_canon_image(int w, int h);
17 #ifdef DEBUG_RECTANGLES
18 # define CANIMG_DEBUG_RECTANGLE_1LINE(im,w,h) \
19 fprintf(debug, "%4d ",y); \
20 int r= fwrite(im->d + y*w, 1,w, debug); \
24 # define CANIMG_DEBUG_RECTANGLE_1LINE(im,y,h) /* nothing */
27 #define CANONICALISE_IMAGE(im,w,h, COMPUTE_RGB) do{ \
28 /* compute_rgb should be a number of statements, or \
29 * a block, which assigns to \
30 * unsigned long rgb; \
31 * given the values of \
33 * all of which are anamorphic. Result is stored in im. \
34 * The COMPUTE_RGB is executed exactly once for \
35 * each pixel in reading order. \
37 (im)= alloc_canon_image((w), (h)); \
40 for (y=0; y<(h); y++) { \
41 for (x=0; x<(w); x++) { \
42 const CanonColourInfo *cci; \
45 for (cci=canoncolourinfos; cci->c; cci++) \
46 if (cci->rgb == rgb) { \
47 (im)->d[y*(w) + x]= cci->c; \
51 CANIMG_DEBUG_RECTANGLE_1LINE((im),(w),(h)) \
57 #endif /*STRUCTURE_H*/