4 * Copyright 2003, 2004, 2005, 2006 Develer S.r.l. (http://www.develer.com/)
5 * Copyright 1999 Bernardo Innocenti <bernie@develer.com>
6 * This file is part of DevLib - See README.devlib for information.
11 * \author Bernardo Innocenti <bernie@develer.com>
13 * \brief Graphics private header.
18 *#* Revision 1.3 2006/02/15 09:10:15 bernie
19 *#* Implement prop fonts; Fix algo styles.
21 *#* Revision 1.2 2006/02/10 12:28:33 bernie
22 *#* Add font support in bitmaps; Make bitmap formats public.
24 *#* Revision 1.1 2006/01/26 00:32:49 bernie
25 *#* Graphics private header.
33 #if CONFIG_BITMAP_FMT == BITMAP_FMT_PLANAR_H_MSB
35 //TODO: Collapse with RAST_* macros
36 #define BM_ADDR(bm, x, y) ((bm)->raster + (y) * (bm)->stride + ((x) / 8))
37 #define BM_MASK(bm, x, y) (1 << (7 - (x) % 8))
39 #define RAST_ADDR(raster, x, y, stride) ((raster) + (y) * (stride) + (x) / 8)
40 #define RAST_MASK(raster, x, y) (1 << (7 - (x) % 8))
42 #elif CONFIG_BITMAP_FMT == BITMAP_FMT_PLANAR_V_LSB
44 #define BM_ADDR(bm, x, y) ((bm)->raster + ((y) / 8) * (bm)->stride + (x))
45 #define BM_MASK(bm, x, y) (1 << ((y) % 8))
47 // FIXME: not the same format of bitmaps!
48 #define RAST_ADDR(raster, x, y, stride) ((raster) + (y) / 8 + (x) * (stride))
49 #define RAST_MASK(raster, x, y) (1 << ((y) % 8))
51 #error Unknown value of CONFIG_BITMAP_FMT
52 #endif /* CONFIG_BITMAP_FMT */
55 * Plot a pixel in bitmap \a bm.
57 * \note bm is evaluated twice.
58 * \see BM_CLEAR BM_DRAWPIXEL
60 #define BM_PLOT(bm, x, y) \
61 ( *BM_ADDR(bm, x, y) |= BM_MASK(bm, x, y) )
64 * Clear a pixel in bitmap \a bm.
66 * \note bm is evaluated twice.
67 * \see BM_PLOT BM_DRAWPIXEL
69 #define BM_CLEAR(bm, x, y) \
70 ( *BM_ADDR(bm, x, y) &= ~BM_MASK(bm, x, y) )
73 * Set a pixel in bitmap \a bm to the specified color.
75 * \note bm is evaluated twice.
76 * \note This macro is somewhat slower than BM_PLOT and BM_CLEAR.
77 * \see BM_PLOT BM_CLEAR
79 #define BM_DRAWPIXEL(bm, x, y, fg_pen) \
81 uint8_t *p = BM_ADDR(bm, x, y); \
82 uint8_t mask = BM_MASK(bm, x, y); \
83 *p = (*p & ~mask) | ((fg_pen) ? mask : 0); \
87 * Get the value of the pixel in bitmap \a bm.
89 * \return The returned value is either 0 or 1.
91 * \note bm is evaluated twice.
94 #define BM_READPIXEL(bm, x, y) \
95 ( *BM_ADDR(bm, x, y) & BM_MASK(bm, x, y) ? 1 : 0 )
97 #define RAST_READPIXEL(raster, x, y, stride) \
98 ( *RAST_ADDR(raster, x, y, stride) & RAST_MASK(raster, x, y) ? 1 : 0 )
100 #endif /* GFX_GFX_P_H */