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1 | /* | |
2 | * QEMU TCX Frame buffer | |
3 | * | |
4 | * Copyright (c) 2003-2005 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #include "vl.h" | |
25 | #include "pixel_ops.h" | |
26 | ||
27 | #define MAXX 1024 | |
28 | #define MAXY 768 | |
29 | #define TCX_DAC_NREGS 16 | |
30 | #define TCX_THC_NREGS_8 0x081c | |
31 | #define TCX_THC_NREGS_24 0x1000 | |
32 | #define TCX_TEC_NREGS 0x1000 | |
33 | ||
34 | typedef struct TCXState { | |
35 | target_phys_addr_t addr; | |
36 | DisplayState *ds; | |
37 | uint8_t *vram; | |
38 | uint32_t *vram24, *cplane; | |
39 | ram_addr_t vram_offset, vram24_offset, cplane_offset; | |
40 | uint16_t width, height, depth; | |
41 | uint8_t r[256], g[256], b[256]; | |
42 | uint32_t palette[256]; | |
43 | uint8_t dac_index, dac_state; | |
44 | } TCXState; | |
45 | ||
46 | static void tcx_screen_dump(void *opaque, const char *filename); | |
47 | static void tcx24_screen_dump(void *opaque, const char *filename); | |
48 | static void tcx_invalidate_display(void *opaque); | |
49 | static void tcx24_invalidate_display(void *opaque); | |
50 | ||
51 | static void update_palette_entries(TCXState *s, int start, int end) | |
52 | { | |
53 | int i; | |
54 | for(i = start; i < end; i++) { | |
55 | switch(s->ds->depth) { | |
56 | default: | |
57 | case 8: | |
58 | s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]); | |
59 | break; | |
60 | case 15: | |
61 | if (s->ds->bgr) | |
62 | s->palette[i] = rgb_to_pixel15bgr(s->r[i], s->g[i], s->b[i]); | |
63 | else | |
64 | s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]); | |
65 | break; | |
66 | case 16: | |
67 | if (s->ds->bgr) | |
68 | s->palette[i] = rgb_to_pixel16bgr(s->r[i], s->g[i], s->b[i]); | |
69 | else | |
70 | s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]); | |
71 | break; | |
72 | case 32: | |
73 | if (s->ds->bgr) | |
74 | s->palette[i] = rgb_to_pixel32bgr(s->r[i], s->g[i], s->b[i]); | |
75 | else | |
76 | s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]); | |
77 | break; | |
78 | } | |
79 | } | |
80 | if (s->depth == 24) | |
81 | tcx24_invalidate_display(s); | |
82 | else | |
83 | tcx_invalidate_display(s); | |
84 | } | |
85 | ||
86 | static void tcx_draw_line32(TCXState *s1, uint8_t *d, | |
87 | const uint8_t *s, int width) | |
88 | { | |
89 | int x; | |
90 | uint8_t val; | |
91 | uint32_t *p = (uint32_t *)d; | |
92 | ||
93 | for(x = 0; x < width; x++) { | |
94 | val = *s++; | |
95 | *p++ = s1->palette[val]; | |
96 | } | |
97 | } | |
98 | ||
99 | static void tcx_draw_line16(TCXState *s1, uint8_t *d, | |
100 | const uint8_t *s, int width) | |
101 | { | |
102 | int x; | |
103 | uint8_t val; | |
104 | uint16_t *p = (uint16_t *)d; | |
105 | ||
106 | for(x = 0; x < width; x++) { | |
107 | val = *s++; | |
108 | *p++ = s1->palette[val]; | |
109 | } | |
110 | } | |
111 | ||
112 | static void tcx_draw_line8(TCXState *s1, uint8_t *d, | |
113 | const uint8_t *s, int width) | |
114 | { | |
115 | int x; | |
116 | uint8_t val; | |
117 | ||
118 | for(x = 0; x < width; x++) { | |
119 | val = *s++; | |
120 | *d++ = s1->palette[val]; | |
121 | } | |
122 | } | |
123 | ||
124 | static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d, | |
125 | const uint8_t *s, int width, | |
126 | const uint32_t *cplane, | |
127 | const uint32_t *s24) | |
128 | { | |
129 | int x; | |
130 | uint8_t val; | |
131 | uint32_t *p = (uint32_t *)d; | |
132 | uint32_t dval; | |
133 | ||
134 | for(x = 0; x < width; x++, s++, s24++) { | |
135 | if ((bswap32(*cplane++) & 0xff000000) == 0x03000000) { // 24-bit direct | |
136 | dval = bswap32(*s24) & 0x00ffffff; | |
137 | } else { | |
138 | val = *s; | |
139 | dval = s1->palette[val]; | |
140 | } | |
141 | *p++ = dval; | |
142 | } | |
143 | } | |
144 | ||
145 | static inline int check_dirty(TCXState *ts, ram_addr_t page, ram_addr_t page24, | |
146 | ram_addr_t cpage) | |
147 | { | |
148 | int ret; | |
149 | unsigned int off; | |
150 | ||
151 | ret = cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG); | |
152 | for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) { | |
153 | ret |= cpu_physical_memory_get_dirty(page24 + off, VGA_DIRTY_FLAG); | |
154 | ret |= cpu_physical_memory_get_dirty(cpage + off, VGA_DIRTY_FLAG); | |
155 | } | |
156 | return ret; | |
157 | } | |
158 | ||
159 | static inline void reset_dirty(TCXState *ts, ram_addr_t page_min, | |
160 | ram_addr_t page_max, ram_addr_t page24, | |
161 | ram_addr_t cpage) | |
162 | { | |
163 | cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE, | |
164 | VGA_DIRTY_FLAG); | |
165 | page_min -= ts->vram_offset; | |
166 | page_max -= ts->vram_offset; | |
167 | cpu_physical_memory_reset_dirty(page24 + page_min * 4, | |
168 | page24 + page_max * 4 + TARGET_PAGE_SIZE, | |
169 | VGA_DIRTY_FLAG); | |
170 | cpu_physical_memory_reset_dirty(cpage + page_min * 4, | |
171 | cpage + page_max * 4 + TARGET_PAGE_SIZE, | |
172 | VGA_DIRTY_FLAG); | |
173 | } | |
174 | ||
175 | /* Fixed line length 1024 allows us to do nice tricks not possible on | |
176 | VGA... */ | |
177 | static void tcx_update_display(void *opaque) | |
178 | { | |
179 | TCXState *ts = opaque; | |
180 | ram_addr_t page, page_min, page_max; | |
181 | int y, y_start, dd, ds; | |
182 | uint8_t *d, *s; | |
183 | void (*f)(TCXState *s1, uint8_t *dst, const uint8_t *src, int width); | |
184 | ||
185 | if (ts->ds->depth == 0) | |
186 | return; | |
187 | page = ts->vram_offset; | |
188 | y_start = -1; | |
189 | page_min = 0xffffffff; | |
190 | page_max = 0; | |
191 | d = ts->ds->data; | |
192 | s = ts->vram; | |
193 | dd = ts->ds->linesize; | |
194 | ds = 1024; | |
195 | ||
196 | switch (ts->ds->depth) { | |
197 | case 32: | |
198 | f = tcx_draw_line32; | |
199 | break; | |
200 | case 15: | |
201 | case 16: | |
202 | f = tcx_draw_line16; | |
203 | break; | |
204 | default: | |
205 | case 8: | |
206 | f = tcx_draw_line8; | |
207 | break; | |
208 | case 0: | |
209 | return; | |
210 | } | |
211 | ||
212 | for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) { | |
213 | if (cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG)) { | |
214 | if (y_start < 0) | |
215 | y_start = y; | |
216 | if (page < page_min) | |
217 | page_min = page; | |
218 | if (page > page_max) | |
219 | page_max = page; | |
220 | f(ts, d, s, ts->width); | |
221 | d += dd; | |
222 | s += ds; | |
223 | f(ts, d, s, ts->width); | |
224 | d += dd; | |
225 | s += ds; | |
226 | f(ts, d, s, ts->width); | |
227 | d += dd; | |
228 | s += ds; | |
229 | f(ts, d, s, ts->width); | |
230 | d += dd; | |
231 | s += ds; | |
232 | } else { | |
233 | if (y_start >= 0) { | |
234 | /* flush to display */ | |
235 | dpy_update(ts->ds, 0, y_start, | |
236 | ts->width, y - y_start); | |
237 | y_start = -1; | |
238 | } | |
239 | d += dd * 4; | |
240 | s += ds * 4; | |
241 | } | |
242 | } | |
243 | if (y_start >= 0) { | |
244 | /* flush to display */ | |
245 | dpy_update(ts->ds, 0, y_start, | |
246 | ts->width, y - y_start); | |
247 | } | |
248 | /* reset modified pages */ | |
249 | if (page_min <= page_max) { | |
250 | cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE, | |
251 | VGA_DIRTY_FLAG); | |
252 | } | |
253 | } | |
254 | ||
255 | static void tcx24_update_display(void *opaque) | |
256 | { | |
257 | TCXState *ts = opaque; | |
258 | ram_addr_t page, page_min, page_max, cpage, page24; | |
259 | int y, y_start, dd, ds; | |
260 | uint8_t *d, *s; | |
261 | uint32_t *cptr, *s24; | |
262 | ||
263 | if (ts->ds->depth != 32) | |
264 | return; | |
265 | page = ts->vram_offset; | |
266 | page24 = ts->vram24_offset; | |
267 | cpage = ts->cplane_offset; | |
268 | y_start = -1; | |
269 | page_min = 0xffffffff; | |
270 | page_max = 0; | |
271 | d = ts->ds->data; | |
272 | s = ts->vram; | |
273 | s24 = ts->vram24; | |
274 | cptr = ts->cplane; | |
275 | dd = ts->ds->linesize; | |
276 | ds = 1024; | |
277 | ||
278 | for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE, | |
279 | page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) { | |
280 | if (check_dirty(ts, page, page24, cpage)) { | |
281 | if (y_start < 0) | |
282 | y_start = y; | |
283 | if (page < page_min) | |
284 | page_min = page; | |
285 | if (page > page_max) | |
286 | page_max = page; | |
287 | tcx24_draw_line32(ts, d, s, ts->width, cptr, s24); | |
288 | d += dd; | |
289 | s += ds; | |
290 | cptr += ds; | |
291 | s24 += ds; | |
292 | tcx24_draw_line32(ts, d, s, ts->width, cptr, s24); | |
293 | d += dd; | |
294 | s += ds; | |
295 | cptr += ds; | |
296 | s24 += ds; | |
297 | tcx24_draw_line32(ts, d, s, ts->width, cptr, s24); | |
298 | d += dd; | |
299 | s += ds; | |
300 | cptr += ds; | |
301 | s24 += ds; | |
302 | tcx24_draw_line32(ts, d, s, ts->width, cptr, s24); | |
303 | d += dd; | |
304 | s += ds; | |
305 | cptr += ds; | |
306 | s24 += ds; | |
307 | } else { | |
308 | if (y_start >= 0) { | |
309 | /* flush to display */ | |
310 | dpy_update(ts->ds, 0, y_start, | |
311 | ts->width, y - y_start); | |
312 | y_start = -1; | |
313 | } | |
314 | d += dd * 4; | |
315 | s += ds * 4; | |
316 | cptr += ds * 4; | |
317 | s24 += ds * 4; | |
318 | } | |
319 | } | |
320 | if (y_start >= 0) { | |
321 | /* flush to display */ | |
322 | dpy_update(ts->ds, 0, y_start, | |
323 | ts->width, y - y_start); | |
324 | } | |
325 | /* reset modified pages */ | |
326 | if (page_min <= page_max) { | |
327 | reset_dirty(ts, page_min, page_max, page24, cpage); | |
328 | } | |
329 | } | |
330 | ||
331 | static void tcx_invalidate_display(void *opaque) | |
332 | { | |
333 | TCXState *s = opaque; | |
334 | int i; | |
335 | ||
336 | for (i = 0; i < MAXX*MAXY; i += TARGET_PAGE_SIZE) { | |
337 | cpu_physical_memory_set_dirty(s->vram_offset + i); | |
338 | } | |
339 | } | |
340 | ||
341 | static void tcx24_invalidate_display(void *opaque) | |
342 | { | |
343 | TCXState *s = opaque; | |
344 | int i; | |
345 | ||
346 | tcx_invalidate_display(s); | |
347 | for (i = 0; i < MAXX*MAXY * 4; i += TARGET_PAGE_SIZE) { | |
348 | cpu_physical_memory_set_dirty(s->vram24_offset + i); | |
349 | cpu_physical_memory_set_dirty(s->cplane_offset + i); | |
350 | } | |
351 | } | |
352 | ||
353 | static void tcx_save(QEMUFile *f, void *opaque) | |
354 | { | |
355 | TCXState *s = opaque; | |
356 | ||
357 | qemu_put_be16s(f, (uint16_t *)&s->height); | |
358 | qemu_put_be16s(f, (uint16_t *)&s->width); | |
359 | qemu_put_be16s(f, (uint16_t *)&s->depth); | |
360 | qemu_put_buffer(f, s->r, 256); | |
361 | qemu_put_buffer(f, s->g, 256); | |
362 | qemu_put_buffer(f, s->b, 256); | |
363 | qemu_put_8s(f, &s->dac_index); | |
364 | qemu_put_8s(f, &s->dac_state); | |
365 | } | |
366 | ||
367 | static int tcx_load(QEMUFile *f, void *opaque, int version_id) | |
368 | { | |
369 | TCXState *s = opaque; | |
370 | uint32_t dummy; | |
371 | ||
372 | if (version_id != 3 && version_id != 4) | |
373 | return -EINVAL; | |
374 | ||
375 | if (version_id == 3) { | |
376 | qemu_get_be32s(f, (uint32_t *)&dummy); | |
377 | qemu_get_be32s(f, (uint32_t *)&dummy); | |
378 | qemu_get_be32s(f, (uint32_t *)&dummy); | |
379 | } | |
380 | qemu_get_be16s(f, (uint16_t *)&s->height); | |
381 | qemu_get_be16s(f, (uint16_t *)&s->width); | |
382 | qemu_get_be16s(f, (uint16_t *)&s->depth); | |
383 | qemu_get_buffer(f, s->r, 256); | |
384 | qemu_get_buffer(f, s->g, 256); | |
385 | qemu_get_buffer(f, s->b, 256); | |
386 | qemu_get_8s(f, &s->dac_index); | |
387 | qemu_get_8s(f, &s->dac_state); | |
388 | update_palette_entries(s, 0, 256); | |
389 | if (s->depth == 24) | |
390 | tcx24_invalidate_display(s); | |
391 | else | |
392 | tcx_invalidate_display(s); | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
397 | static void tcx_reset(void *opaque) | |
398 | { | |
399 | TCXState *s = opaque; | |
400 | ||
401 | /* Initialize palette */ | |
402 | memset(s->r, 0, 256); | |
403 | memset(s->g, 0, 256); | |
404 | memset(s->b, 0, 256); | |
405 | s->r[255] = s->g[255] = s->b[255] = 255; | |
406 | update_palette_entries(s, 0, 256); | |
407 | memset(s->vram, 0, MAXX*MAXY); | |
408 | cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset + | |
409 | MAXX * MAXY * (1 + 4 + 4), VGA_DIRTY_FLAG); | |
410 | s->dac_index = 0; | |
411 | s->dac_state = 0; | |
412 | } | |
413 | ||
414 | static uint32_t tcx_dac_readl(void *opaque, target_phys_addr_t addr) | |
415 | { | |
416 | return 0; | |
417 | } | |
418 | ||
419 | static void tcx_dac_writel(void *opaque, target_phys_addr_t addr, uint32_t val) | |
420 | { | |
421 | TCXState *s = opaque; | |
422 | uint32_t saddr; | |
423 | ||
424 | saddr = (addr & (TCX_DAC_NREGS - 1)) >> 2; | |
425 | switch (saddr) { | |
426 | case 0: | |
427 | s->dac_index = val >> 24; | |
428 | s->dac_state = 0; | |
429 | break; | |
430 | case 1: | |
431 | switch (s->dac_state) { | |
432 | case 0: | |
433 | s->r[s->dac_index] = val >> 24; | |
434 | update_palette_entries(s, s->dac_index, s->dac_index + 1); | |
435 | s->dac_state++; | |
436 | break; | |
437 | case 1: | |
438 | s->g[s->dac_index] = val >> 24; | |
439 | update_palette_entries(s, s->dac_index, s->dac_index + 1); | |
440 | s->dac_state++; | |
441 | break; | |
442 | case 2: | |
443 | s->b[s->dac_index] = val >> 24; | |
444 | update_palette_entries(s, s->dac_index, s->dac_index + 1); | |
445 | s->dac_index = (s->dac_index + 1) & 255; // Index autoincrement | |
446 | default: | |
447 | s->dac_state = 0; | |
448 | break; | |
449 | } | |
450 | break; | |
451 | default: | |
452 | break; | |
453 | } | |
454 | return; | |
455 | } | |
456 | ||
457 | static CPUReadMemoryFunc *tcx_dac_read[3] = { | |
458 | tcx_dac_readl, | |
459 | tcx_dac_readl, | |
460 | tcx_dac_readl, | |
461 | }; | |
462 | ||
463 | static CPUWriteMemoryFunc *tcx_dac_write[3] = { | |
464 | tcx_dac_writel, | |
465 | tcx_dac_writel, | |
466 | tcx_dac_writel, | |
467 | }; | |
468 | ||
469 | static uint32_t tcx_dummy_readl(void *opaque, target_phys_addr_t addr) | |
470 | { | |
471 | return 0; | |
472 | } | |
473 | ||
474 | static void tcx_dummy_writel(void *opaque, target_phys_addr_t addr, | |
475 | uint32_t val) | |
476 | { | |
477 | } | |
478 | ||
479 | static CPUReadMemoryFunc *tcx_dummy_read[3] = { | |
480 | tcx_dummy_readl, | |
481 | tcx_dummy_readl, | |
482 | tcx_dummy_readl, | |
483 | }; | |
484 | ||
485 | static CPUWriteMemoryFunc *tcx_dummy_write[3] = { | |
486 | tcx_dummy_writel, | |
487 | tcx_dummy_writel, | |
488 | tcx_dummy_writel, | |
489 | }; | |
490 | ||
491 | void tcx_init(DisplayState *ds, target_phys_addr_t addr, uint8_t *vram_base, | |
492 | unsigned long vram_offset, int vram_size, int width, int height, | |
493 | int depth) | |
494 | { | |
495 | TCXState *s; | |
496 | int io_memory, dummy_memory; | |
497 | int size; | |
498 | ||
499 | s = qemu_mallocz(sizeof(TCXState)); | |
500 | if (!s) | |
501 | return; | |
502 | s->ds = ds; | |
503 | s->addr = addr; | |
504 | s->vram_offset = vram_offset; | |
505 | s->width = width; | |
506 | s->height = height; | |
507 | s->depth = depth; | |
508 | ||
509 | // 8-bit plane | |
510 | s->vram = vram_base; | |
511 | size = vram_size; | |
512 | cpu_register_physical_memory(addr + 0x00800000ULL, size, vram_offset); | |
513 | vram_offset += size; | |
514 | vram_base += size; | |
515 | ||
516 | io_memory = cpu_register_io_memory(0, tcx_dac_read, tcx_dac_write, s); | |
517 | cpu_register_physical_memory(addr + 0x00200000ULL, TCX_DAC_NREGS, io_memory); | |
518 | ||
519 | dummy_memory = cpu_register_io_memory(0, tcx_dummy_read, tcx_dummy_write, | |
520 | s); | |
521 | cpu_register_physical_memory(addr + 0x00700000ULL, TCX_TEC_NREGS, | |
522 | dummy_memory); | |
523 | if (depth == 24) { | |
524 | // 24-bit plane | |
525 | size = vram_size * 4; | |
526 | s->vram24 = (uint32_t *)vram_base; | |
527 | s->vram24_offset = vram_offset; | |
528 | cpu_register_physical_memory(addr + 0x02000000ULL, size, vram_offset); | |
529 | vram_offset += size; | |
530 | vram_base += size; | |
531 | ||
532 | // Control plane | |
533 | size = vram_size * 4; | |
534 | s->cplane = (uint32_t *)vram_base; | |
535 | s->cplane_offset = vram_offset; | |
536 | cpu_register_physical_memory(addr + 0x0a000000ULL, size, vram_offset); | |
537 | graphic_console_init(s->ds, tcx24_update_display, | |
538 | tcx24_invalidate_display, tcx24_screen_dump, s); | |
539 | } else { | |
540 | cpu_register_physical_memory(addr + 0x00300000ULL, TCX_THC_NREGS_8, | |
541 | dummy_memory); | |
542 | graphic_console_init(s->ds, tcx_update_display, tcx_invalidate_display, | |
543 | tcx_screen_dump, s); | |
544 | } | |
545 | // NetBSD writes here even with 8-bit display | |
546 | cpu_register_physical_memory(addr + 0x00301000ULL, TCX_THC_NREGS_24, | |
547 | dummy_memory); | |
548 | ||
549 | register_savevm("tcx", addr, 4, tcx_save, tcx_load, s); | |
550 | qemu_register_reset(tcx_reset, s); | |
551 | tcx_reset(s); | |
552 | dpy_resize(s->ds, width, height); | |
553 | } | |
554 | ||
555 | static void tcx_screen_dump(void *opaque, const char *filename) | |
556 | { | |
557 | TCXState *s = opaque; | |
558 | FILE *f; | |
559 | uint8_t *d, *d1, v; | |
560 | int y, x; | |
561 | ||
562 | f = fopen(filename, "wb"); | |
563 | if (!f) | |
564 | return; | |
565 | fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255); | |
566 | d1 = s->vram; | |
567 | for(y = 0; y < s->height; y++) { | |
568 | d = d1; | |
569 | for(x = 0; x < s->width; x++) { | |
570 | v = *d; | |
571 | fputc(s->r[v], f); | |
572 | fputc(s->g[v], f); | |
573 | fputc(s->b[v], f); | |
574 | d++; | |
575 | } | |
576 | d1 += MAXX; | |
577 | } | |
578 | fclose(f); | |
579 | return; | |
580 | } | |
581 | ||
582 | static void tcx24_screen_dump(void *opaque, const char *filename) | |
583 | { | |
584 | TCXState *s = opaque; | |
585 | FILE *f; | |
586 | uint8_t *d, *d1, v; | |
587 | uint32_t *s24, *cptr, dval; | |
588 | int y, x; | |
589 | ||
590 | f = fopen(filename, "wb"); | |
591 | if (!f) | |
592 | return; | |
593 | fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255); | |
594 | d1 = s->vram; | |
595 | s24 = s->vram24; | |
596 | cptr = s->cplane; | |
597 | for(y = 0; y < s->height; y++) { | |
598 | d = d1; | |
599 | for(x = 0; x < s->width; x++, d++, s24++) { | |
600 | if ((*cptr++ & 0xff000000) == 0x03000000) { // 24-bit direct | |
601 | dval = *s24 & 0x00ffffff; | |
602 | fputc((dval >> 16) & 0xff, f); | |
603 | fputc((dval >> 8) & 0xff, f); | |
604 | fputc(dval & 0xff, f); | |
605 | } else { | |
606 | v = *d; | |
607 | fputc(s->r[v], f); | |
608 | fputc(s->g[v], f); | |
609 | fputc(s->b[v], f); | |
610 | } | |
611 | } | |
612 | d1 += MAXX; | |
613 | } | |
614 | fclose(f); | |
615 | return; | |
616 | } |