#include "convert.h"
-typedef struct {
- unsigned long rgb; /* on screen */
- char c; /* canonical */
-} CanonColourInfo;
-
-extern const CanonColourInfo canoncolourinfos[];
+typedef struct { char blue2[256]; } CanonColourInfoBlues;
+typedef struct { CanonColourInfoBlues *green2[256]; } CanonColourInfoGreens;
+typedef struct { CanonColourInfoGreens *red2[256]; } CanonColourInfoReds;
+extern CanonColourInfoReds canoncolourinfo_tree;
CanonImage *alloc_canon_image(int w, int h);
+static inline char canon_lookup_colour(unsigned char r,
+ unsigned char g,
+ unsigned char b) {
+ CanonColourInfoGreens *greens= canoncolourinfo_tree.red2[r];
+ if (!greens) return '?';
+ CanonColourInfoBlues *blues= greens->green2[g];
+ if (!blues) return '?';
+ return blues->blue2[b];
+}
+
#define CANONICALISE_IMAGE(im,w,h, COMPUTE_RGB) do{ \
/* compute_rgb should be a number of statements, or \
* a block, which assigns to \
- * unsigned long rgb; \
+ * Rgb rgb; \
* given the values of \
* int x,y; \
* all of which are anamorphic. Result is stored in im. \
* each pixel in reading order. \
*/ \
(im)= alloc_canon_image((w), (h)); \
+ (im)->rgb= alloc_rgb_image((w), (h)); \
\
int x,y; \
for (y=0; y<(h); y++) { \
for (x=0; x<(w); x++) { \
- const CanonColourInfo *cci; \
- unsigned long rgb; \
+ unsigned char r,g,b; \
COMPUTE_RGB; \
- for (cci=canoncolourinfos; cci->c; cci++) { \
- if (cci->rgb == rgb) { \
- (im)->d[y*(w) + x]= cci->c; \
- break; \
- } \
- } \
+ CANONIMG_ALSO_STORERGB((im)->rgb); \
+ (im)->d[y*(w) + x]= canon_lookup_colour(r,g,b); \
} \
if (DEBUGP(rect)) { \
fprintf(debug, "%4d ",y); \
- fwrite(im->d + y*w, 1,w, debug); \
+ fwrite(im->d + y*(w), 1,(w), debug); \
fputc('\n',debug); \
} \
} \
}while(0)
-typedef struct {
- int w, h;
- char data[];
- /* red = data[ y*w*3 + x*3 + 0 ] = RI_PIXEL(ri,x,y)[0]
- * green = data[ y*w*3 + x*3 + 1 ] = RI_PIXEL(ri,x,y)[1]
- * blue = data[ y*w*3 + x*3 + 2 ] = RI_PIXEL(ri,x,y)[2]
- */
-} RawImage;
-
-RawImage *alloc_raw_image(int w, int h);
-
-#define RI_PIXEL(ri,x,y) ((ri)->data + ((y)*(ri)->w + (x)) * 3)
-
-#define CANONIMG_ALSO_STORERAW(ri) \
+#define CANONIMG_ALSO_STORERGB(ri) \
do{ \
- char *rip= RI_PIXEL((ri),x,y); \
- rip[0]= rgb >> 16; \
- rip[1]= rgb >> 8; \
- rip[2]= rgb; \
+ unsigned char *rip= RI_PIXEL((ri),x,y); \
+ rip[0]= r; \
+ rip[1]= g; \
+ rip[2]= b; \
}while(0)
+
#endif /*STRUCTURE_H*/