X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~yarrgweb/git?a=blobdiff_plain;f=pctb%2Fconvert.h;h=b61563fd32449c200b6915484b4fcc9a3d3c7a33;hb=cec9583fe97a74a44625e63cfa22318db2699ee4;hp=80979ec2e885829f8d15faccd887c9c63a6812b0;hpb=dac0bb3ca1c725ef968a07bb89fa96ebdc7fb0b9;p=ypp-sc-tools.db-test.git

diff --git a/pctb/convert.h b/pctb/convert.h
index 80979ec..b61563f 100644
--- a/pctb/convert.h
+++ b/pctb/convert.h
@@ -51,6 +51,8 @@ typedef struct RgbImage {
    */
 } RgbImage;
 
+typedef unsigned long Rgb;
+
 void identify_rgbimage(const RgbImage *base, Rect portion,
 		       char result[MAXIMGIDENT], const char *what);
 RgbImage *alloc_rgb_image(int w, int h);
@@ -58,6 +60,13 @@ void fwrite_ppmraw(FILE *f, const RgbImage *ri);
 
 #define RI_PIXEL(ri,x,y) ((ri)->data + ((y)*(ri)->w + (x)) * 3)
 
+static inline Rgb ri_rgb(const RgbImage *ri, int x, int y) {
+  const unsigned char *rip= RI_PIXEL(ri,x,y);
+  return (rip[0] << 16) |
+         (rip[1] <<  8) |
+         (rip[2]      );
+}
+
 /*----- from structure.c -----*/
 
 void find_structure(const CanonImage *im, int *max_relevant_y_r);
@@ -118,7 +127,6 @@ void take_one_screenshot(void);
 #define MAX_PAGES 100
 extern CanonImage *page_images[MAX_PAGES];
 extern int npages;
-RgbImage *page0_rgbimage;
 
 extern const char *ocean, *pirate;
 extern char *archipelago, *island;