/*#*
*#* $Log$
+ *#* Revision 1.6 2006/05/27 17:17:34 bernie
+ *#* Optimize away divisions in RAST_ADDR/MASK macros.
+ *#*
+ *#* Revision 1.5 2006/05/25 23:35:40 bernie
+ *#* Cleanup.
+ *#*
+ *#* Revision 1.4 2006/03/22 09:50:37 bernie
+ *#* Use the same format for fonts and rasters.
+ *#*
+ *#* Revision 1.3 2006/02/15 09:10:15 bernie
+ *#* Implement prop fonts; Fix algo styles.
+ *#*
*#* Revision 1.2 2006/02/10 12:28:33 bernie
*#* Add font support in bitmaps; Make bitmap formats public.
*#*
#ifndef GFX_GFX_P_H
#define GFX_GFX_P_H
+#include <gfx/gfx.h>
#if CONFIG_BITMAP_FMT == BITMAP_FMT_PLANAR_H_MSB
- #define BM_ADDR(bm, x, y) ((bm)->raster + (y) * (bm)->stride + ((x) / 8))
- #define BM_MASK(bm, x, y) (1 << (7 - (x) % 8))
+ /* We use ucoord_t to let the compiler optimize away the division/modulo. */
+ #define RAST_ADDR(raster, x, y, stride) \
+ ((raster) + (ucoord_t)(y) * (ucoord_t)(stride) + (ucoord_t)(x) / 8)
+ #define RAST_MASK(raster, x, y) \
+ (1 << (7 - (ucoord_t)(x) % 8))
#elif CONFIG_BITMAP_FMT == BITMAP_FMT_PLANAR_V_LSB
- #define BM_ADDR(bm, x, y) ((bm)->raster + ((y) / 8) * (bm)->stride + (x))
- #define BM_MASK(bm, x, y) (1 << ((y) % 8))
+ /* We use ucoord_t to let the compiler optimize away the division/modulo. */
+ #define RAST_ADDR(raster, x, y, stride) \
+ ((raster) + ((ucoord_t)(y) / 8) * (ucoord_t)(stride) + (ucoord_t)(x))
+ #define RAST_MASK(raster, x, y) \
+ (1 << ((ucoord_t)(y) % 8))
#else
#error Unknown value of CONFIG_BITMAP_FMT
#endif /* CONFIG_BITMAP_FMT */
+#define BM_ADDR(bm, x, y) RAST_ADDR((bm)->raster, (x), (y), (bm)->stride)
+#define BM_MASK(bm, x, y) RAST_MASK((bm)->raster, (x), (y))
+
/*!
* Plot a pixel in bitmap \a bm.
*
#define BM_READPIXEL(bm, x, y) \
( *BM_ADDR(bm, x, y) & BM_MASK(bm, x, y) ? 1 : 0 )
+#define RAST_READPIXEL(raster, x, y, stride) \
+ ( *RAST_ADDR(raster, x, y, stride) & RAST_MASK(raster, x, y) ? 1 : 0 )
#endif /* GFX_GFX_P_H */