1 | /* |
2 | * Arm PrimeCell PL110 Color LCD Controller |
3 | * |
4 | * Copyright (c) 2005 CodeSourcery, LLC. |
5 | * Written by Paul Brook |
6 | * |
7 | * This code is licensed under the GNU LGPL |
8 | * |
9 | * Framebuffer format conversion routines. |
10 | */ |
11 | |
12 | #ifndef ORDER |
13 | |
14 | #if BITS == 8 |
15 | #define COPY_PIXEL(to, from) *(to++) = from |
16 | #elif BITS == 15 || BITS == 16 |
17 | #define COPY_PIXEL(to, from) do { *(uint16_t *)to = from; to += 2; } while (0) |
18 | #elif BITS == 24 |
19 | #define COPY_PIXEL(to, from) \ |
20 | do { \ |
21 | *(to++) = from; \ |
22 | *(to++) = (from) >> 8; \ |
23 | *(to++) = (from) >> 16; \ |
24 | } while (0) |
25 | #elif BITS == 32 |
26 | #define COPY_PIXEL(to, from) do { *(uint32_t *)to = from; to += 4; } while (0) |
27 | #else |
28 | #error unknown bit depth |
29 | #endif |
30 | |
31 | #undef RGB |
32 | #define BORDER bgr |
33 | #define ORDER 0 |
34 | #include "pl110_template.h" |
35 | #define ORDER 1 |
36 | #include "pl110_template.h" |
37 | #define ORDER 2 |
38 | #include "pl110_template.h" |
39 | #undef BORDER |
40 | #define RGB |
41 | #define BORDER rgb |
42 | #define ORDER 0 |
43 | #include "pl110_template.h" |
44 | #define ORDER 1 |
45 | #include "pl110_template.h" |
46 | #define ORDER 2 |
47 | #include "pl110_template.h" |
48 | #undef BORDER |
49 | |
50 | static drawfn glue(pl110_draw_fn_,BITS)[48] = |
51 | { |
52 | glue(pl110_draw_line1_lblp_bgr,BITS), |
53 | glue(pl110_draw_line2_lblp_bgr,BITS), |
54 | glue(pl110_draw_line4_lblp_bgr,BITS), |
55 | glue(pl110_draw_line8_lblp_bgr,BITS), |
56 | glue(pl110_draw_line16_555_lblp_bgr,BITS), |
57 | glue(pl110_draw_line32_lblp_bgr,BITS), |
58 | glue(pl110_draw_line16_lblp_bgr,BITS), |
59 | glue(pl110_draw_line12_lblp_bgr,BITS), |
60 | |
61 | glue(pl110_draw_line1_bbbp_bgr,BITS), |
62 | glue(pl110_draw_line2_bbbp_bgr,BITS), |
63 | glue(pl110_draw_line4_bbbp_bgr,BITS), |
64 | glue(pl110_draw_line8_bbbp_bgr,BITS), |
65 | glue(pl110_draw_line16_555_bbbp_bgr,BITS), |
66 | glue(pl110_draw_line32_bbbp_bgr,BITS), |
67 | glue(pl110_draw_line16_bbbp_bgr,BITS), |
68 | glue(pl110_draw_line12_bbbp_bgr,BITS), |
69 | |
70 | glue(pl110_draw_line1_lbbp_bgr,BITS), |
71 | glue(pl110_draw_line2_lbbp_bgr,BITS), |
72 | glue(pl110_draw_line4_lbbp_bgr,BITS), |
73 | glue(pl110_draw_line8_lbbp_bgr,BITS), |
74 | glue(pl110_draw_line16_555_lbbp_bgr,BITS), |
75 | glue(pl110_draw_line32_lbbp_bgr,BITS), |
76 | glue(pl110_draw_line16_lbbp_bgr,BITS), |
77 | glue(pl110_draw_line12_lbbp_bgr,BITS), |
78 | |
79 | glue(pl110_draw_line1_lblp_rgb,BITS), |
80 | glue(pl110_draw_line2_lblp_rgb,BITS), |
81 | glue(pl110_draw_line4_lblp_rgb,BITS), |
82 | glue(pl110_draw_line8_lblp_rgb,BITS), |
83 | glue(pl110_draw_line16_555_lblp_rgb,BITS), |
84 | glue(pl110_draw_line32_lblp_rgb,BITS), |
85 | glue(pl110_draw_line16_lblp_rgb,BITS), |
86 | glue(pl110_draw_line12_lblp_rgb,BITS), |
87 | |
88 | glue(pl110_draw_line1_bbbp_rgb,BITS), |
89 | glue(pl110_draw_line2_bbbp_rgb,BITS), |
90 | glue(pl110_draw_line4_bbbp_rgb,BITS), |
91 | glue(pl110_draw_line8_bbbp_rgb,BITS), |
92 | glue(pl110_draw_line16_555_bbbp_rgb,BITS), |
93 | glue(pl110_draw_line32_bbbp_rgb,BITS), |
94 | glue(pl110_draw_line16_bbbp_rgb,BITS), |
95 | glue(pl110_draw_line12_bbbp_rgb,BITS), |
96 | |
97 | glue(pl110_draw_line1_lbbp_rgb,BITS), |
98 | glue(pl110_draw_line2_lbbp_rgb,BITS), |
99 | glue(pl110_draw_line4_lbbp_rgb,BITS), |
100 | glue(pl110_draw_line8_lbbp_rgb,BITS), |
101 | glue(pl110_draw_line16_555_lbbp_rgb,BITS), |
102 | glue(pl110_draw_line32_lbbp_rgb,BITS), |
103 | glue(pl110_draw_line16_lbbp_rgb,BITS), |
104 | glue(pl110_draw_line12_lbbp_rgb,BITS), |
105 | }; |
106 | |
107 | #undef BITS |
108 | #undef COPY_PIXEL |
109 | |
110 | #else |
111 | |
112 | #if ORDER == 0 |
113 | #define NAME glue(glue(lblp_, BORDER), BITS) |
114 | #ifdef HOST_WORDS_BIGENDIAN |
115 | #define SWAP_WORDS 1 |
116 | #endif |
117 | #elif ORDER == 1 |
118 | #define NAME glue(glue(bbbp_, BORDER), BITS) |
119 | #ifndef HOST_WORDS_BIGENDIAN |
120 | #define SWAP_WORDS 1 |
121 | #endif |
122 | #else |
123 | #define SWAP_PIXELS 1 |
124 | #define NAME glue(glue(lbbp_, BORDER), BITS) |
125 | #ifdef HOST_WORDS_BIGENDIAN |
126 | #define SWAP_WORDS 1 |
127 | #endif |
128 | #endif |
129 | |
130 | #define FN_2(x, y) FN(x, y) FN(x+1, y) |
131 | #define FN_4(x, y) FN_2(x, y) FN_2(x+2, y) |
132 | #define FN_8(y) FN_4(0, y) FN_4(4, y) |
133 | |
134 | static void glue(pl110_draw_line1_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
135 | { |
136 | uint32_t *palette = opaque; |
137 | uint32_t data; |
138 | while (width > 0) { |
139 | data = *(uint32_t *)src; |
140 | #ifdef SWAP_PIXELS |
141 | #define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 7 - (x))) & 1]); |
142 | #else |
143 | #define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x) + y)) & 1]); |
144 | #endif |
145 | #ifdef SWAP_WORDS |
146 | FN_8(24) |
147 | FN_8(16) |
148 | FN_8(8) |
149 | FN_8(0) |
150 | #else |
151 | FN_8(0) |
152 | FN_8(8) |
153 | FN_8(16) |
154 | FN_8(24) |
155 | #endif |
156 | #undef FN |
157 | width -= 32; |
158 | src += 4; |
159 | } |
160 | } |
161 | |
162 | static void glue(pl110_draw_line2_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
163 | { |
164 | uint32_t *palette = opaque; |
165 | uint32_t data; |
166 | while (width > 0) { |
167 | data = *(uint32_t *)src; |
168 | #ifdef SWAP_PIXELS |
169 | #define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 6 - (x)*2)) & 3]); |
170 | #else |
171 | #define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x)*2 + y)) & 3]); |
172 | #endif |
173 | #ifdef SWAP_WORDS |
174 | FN_4(0, 24) |
175 | FN_4(0, 16) |
176 | FN_4(0, 8) |
177 | FN_4(0, 0) |
178 | #else |
179 | FN_4(0, 0) |
180 | FN_4(0, 8) |
181 | FN_4(0, 16) |
182 | FN_4(0, 24) |
183 | #endif |
184 | #undef FN |
185 | width -= 16; |
186 | src += 4; |
187 | } |
188 | } |
189 | |
190 | static void glue(pl110_draw_line4_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
191 | { |
192 | uint32_t *palette = opaque; |
193 | uint32_t data; |
194 | while (width > 0) { |
195 | data = *(uint32_t *)src; |
196 | #ifdef SWAP_PIXELS |
197 | #define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 4 - (x)*4)) & 0xf]); |
198 | #else |
199 | #define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x)*4 + y)) & 0xf]); |
200 | #endif |
201 | #ifdef SWAP_WORDS |
202 | FN_2(0, 24) |
203 | FN_2(0, 16) |
204 | FN_2(0, 8) |
205 | FN_2(0, 0) |
206 | #else |
207 | FN_2(0, 0) |
208 | FN_2(0, 8) |
209 | FN_2(0, 16) |
210 | FN_2(0, 24) |
211 | #endif |
212 | #undef FN |
213 | width -= 8; |
214 | src += 4; |
215 | } |
216 | } |
217 | |
218 | static void glue(pl110_draw_line8_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
219 | { |
220 | uint32_t *palette = opaque; |
221 | uint32_t data; |
222 | while (width > 0) { |
223 | data = *(uint32_t *)src; |
224 | #define FN(x) COPY_PIXEL(d, palette[(data >> (x)) & 0xff]); |
225 | #ifdef SWAP_WORDS |
226 | FN(24) |
227 | FN(16) |
228 | FN(8) |
229 | FN(0) |
230 | #else |
231 | FN(0) |
232 | FN(8) |
233 | FN(16) |
234 | FN(24) |
235 | #endif |
236 | #undef FN |
237 | width -= 4; |
238 | src += 4; |
239 | } |
240 | } |
241 | |
242 | static void glue(pl110_draw_line16_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
243 | { |
244 | uint32_t data; |
245 | unsigned int r, g, b; |
246 | while (width > 0) { |
247 | data = *(uint32_t *)src; |
248 | #ifdef SWAP_WORDS |
249 | data = bswap32(data); |
250 | #endif |
251 | #ifdef RGB |
252 | #define LSB r |
253 | #define MSB b |
254 | #else |
255 | #define LSB b |
256 | #define MSB r |
257 | #endif |
258 | #if 0 |
259 | LSB = data & 0x1f; |
260 | data >>= 5; |
261 | g = data & 0x3f; |
262 | data >>= 6; |
263 | MSB = data & 0x1f; |
264 | data >>= 5; |
265 | #else |
266 | LSB = (data & 0x1f) << 3; |
267 | data >>= 5; |
268 | g = (data & 0x3f) << 2; |
269 | data >>= 6; |
270 | MSB = (data & 0x1f) << 3; |
271 | data >>= 5; |
272 | #endif |
273 | COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
274 | LSB = (data & 0x1f) << 3; |
275 | data >>= 5; |
276 | g = (data & 0x3f) << 2; |
277 | data >>= 6; |
278 | MSB = (data & 0x1f) << 3; |
279 | data >>= 5; |
280 | COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
281 | #undef MSB |
282 | #undef LSB |
283 | width -= 2; |
284 | src += 4; |
285 | } |
286 | } |
287 | |
288 | static void glue(pl110_draw_line32_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
289 | { |
290 | uint32_t data; |
291 | unsigned int r, g, b; |
292 | while (width > 0) { |
293 | data = *(uint32_t *)src; |
294 | #ifdef RGB |
295 | #define LSB r |
296 | #define MSB b |
297 | #else |
298 | #define LSB b |
299 | #define MSB r |
300 | #endif |
301 | #ifndef SWAP_WORDS |
302 | LSB = data & 0xff; |
303 | g = (data >> 8) & 0xff; |
304 | MSB = (data >> 16) & 0xff; |
305 | #else |
306 | LSB = (data >> 24) & 0xff; |
307 | g = (data >> 16) & 0xff; |
308 | MSB = (data >> 8) & 0xff; |
309 | #endif |
310 | COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
311 | #undef MSB |
312 | #undef LSB |
313 | width--; |
314 | src += 4; |
315 | } |
316 | } |
317 | |
318 | static void glue(pl110_draw_line16_555_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
319 | { |
320 | /* RGB 555 plus an intensity bit (which we ignore) */ |
321 | uint32_t data; |
322 | unsigned int r, g, b; |
323 | while (width > 0) { |
324 | data = *(uint32_t *)src; |
325 | #ifdef SWAP_WORDS |
326 | data = bswap32(data); |
327 | #endif |
328 | #ifdef RGB |
329 | #define LSB r |
330 | #define MSB b |
331 | #else |
332 | #define LSB b |
333 | #define MSB r |
334 | #endif |
335 | LSB = (data & 0x1f) << 3; |
336 | data >>= 5; |
337 | g = (data & 0x1f) << 3; |
338 | data >>= 5; |
339 | MSB = (data & 0x1f) << 3; |
340 | data >>= 5; |
341 | COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
342 | LSB = (data & 0x1f) << 3; |
343 | data >>= 5; |
344 | g = (data & 0x1f) << 3; |
345 | data >>= 5; |
346 | MSB = (data & 0x1f) << 3; |
347 | data >>= 6; |
348 | COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
349 | #undef MSB |
350 | #undef LSB |
351 | width -= 2; |
352 | src += 4; |
353 | } |
354 | } |
355 | |
356 | static void glue(pl110_draw_line12_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
357 | { |
358 | /* RGB 444 with 4 bits of zeroes at the top of each halfword */ |
359 | uint32_t data; |
360 | unsigned int r, g, b; |
361 | while (width > 0) { |
362 | data = *(uint32_t *)src; |
363 | #ifdef SWAP_WORDS |
364 | data = bswap32(data); |
365 | #endif |
366 | #ifdef RGB |
367 | #define LSB r |
368 | #define MSB b |
369 | #else |
370 | #define LSB b |
371 | #define MSB r |
372 | #endif |
373 | LSB = (data & 0xf) << 4; |
374 | data >>= 4; |
375 | g = (data & 0xf) << 4; |
376 | data >>= 4; |
377 | MSB = (data & 0xf) << 4; |
378 | data >>= 8; |
379 | COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
380 | LSB = (data & 0xf) << 4; |
381 | data >>= 4; |
382 | g = (data & 0xf) << 4; |
383 | data >>= 4; |
384 | MSB = (data & 0xf) << 4; |
385 | data >>= 8; |
386 | COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
387 | #undef MSB |
388 | #undef LSB |
389 | width -= 2; |
390 | src += 4; |
391 | } |
392 | } |
393 | |
394 | #undef SWAP_PIXELS |
395 | #undef NAME |
396 | #undef SWAP_WORDS |
397 | #undef ORDER |
398 | |
399 | #endif |
400 | |