-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]
- */
-} RgbImage;
-
-RgbImage *alloc_rgb_image(int w, int h);
-
-#define RI_PIXEL(ri,x,y) ((ri)->data + ((y)*(ri)->w + (x)) * 3)
-