b78828bf |
1 | /* |
83b5751b |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2010 |
b78828bf |
3 | * |
4 | * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. |
5 | * See the COPYING file in the top-level directory. |
6 | */ |
7 | |
0ec348b9 |
8 | #include <stdio.h> |
9 | #include <stdlib.h> |
10 | #include <string.h> |
11 | #include <sys/time.h> |
12 | #include <SDL/SDL.h> |
13 | |
9ab462cd |
14 | #include "osdl.h" |
0ec348b9 |
15 | |
f641fccb |
16 | static struct SDL_PrivateVideoData state; |
0ec348b9 |
17 | static SDL_Surface *g_screen; |
18 | static void *g_screen_fbp; |
19 | static Uint16 g_8bpp_pal[256]; |
20 | static Uint32 g_start_ticks; |
0ec348b9 |
21 | |
22 | static inline int min(int v1, int v2) |
23 | { |
24 | return v1 < v2 ? v1 : v2; |
25 | } |
26 | |
0ec348b9 |
27 | static SDL_Surface *alloc_surface(int w, int h, int bpp) |
28 | { |
29 | // SDL has some pointer overuse, every surface has a format, |
30 | // why make format accessible through pointer? |
31 | struct { |
32 | SDL_Surface s; |
33 | SDL_PixelFormat f; |
34 | } *ret; |
35 | |
36 | ret = calloc(1, sizeof(*ret)); |
37 | if (ret == NULL) |
38 | return NULL; |
39 | |
40 | ret->s.format = &ret->f; |
41 | ret->f.BitsPerPixel = bpp; |
42 | ret->f.BytesPerPixel = (bpp + 7) / 8; |
43 | |
44 | ret->s.w = w; |
45 | ret->s.h = h; |
46 | ret->s.pitch = w * ret->f.BytesPerPixel; |
47 | // XXX: more fields |
48 | |
49 | return &ret->s; |
50 | } |
51 | |
52 | DECLSPEC int SDLCALL |
53 | SDL_Init(Uint32 flags) |
54 | { |
55 | trace("%08x", flags); |
56 | |
3cb98c5e |
57 | if (g_start_ticks == 0) { |
b78828bf |
58 | omapsdl_input_init(); |
b78828bf |
59 | omapsdl_config(); |
3cb98c5e |
60 | } |
61 | |
0ec348b9 |
62 | g_start_ticks = 0; |
63 | g_start_ticks = SDL_GetTicks(); |
64 | |
65 | return 0; |
66 | } |
67 | |
68 | DECLSPEC void SDLCALL |
69 | SDL_Quit(void) |
70 | { |
71 | trace(""); |
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72 | |
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73 | osdl_video_finish(&state); |
0ec348b9 |
74 | } |
75 | |
76 | DECLSPEC int SDLCALL |
77 | SDL_InitSubSystem(Uint32 flags) |
78 | { |
79 | trace("%08x", flags); |
80 | return 0; |
81 | } |
82 | |
83 | DECLSPEC void SDLCALL |
84 | SDL_QuitSubSystem(Uint32 flags) |
85 | { |
86 | trace("%08x", flags); |
87 | } |
88 | |
89 | DECLSPEC Uint32 SDLCALL |
90 | SDL_GetTicks(void) |
91 | { |
92 | struct timeval tv; |
93 | Uint32 ret; |
94 | |
95 | gettimeofday(&tv, NULL); |
96 | ret = tv.tv_sec * 1000; |
97 | ret += tv.tv_usec * 1048 >> 20; |
98 | |
99 | ret -= g_start_ticks; |
100 | dbg(" SDL_GetTicks %d", ret); |
101 | return ret; |
102 | } |
103 | |
104 | DECLSPEC SDL_Surface * SDLCALL |
105 | SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags) |
106 | { |
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107 | int ret; |
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108 | |
109 | trace("%d, %d, %d, %08x", width, height, bpp, flags); |
110 | |
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111 | if (bpp == 0) |
112 | bpp = 16; |
113 | |
0ec348b9 |
114 | if (bpp != 8 && bpp != 16) { |
115 | err("unsupported bpp: %d\n", bpp); |
116 | return NULL; |
117 | } |
118 | |
119 | // XXX: destroy old g_screen? |
120 | |
121 | g_screen = alloc_surface(width, height, bpp); |
122 | if (g_screen == NULL) |
123 | return NULL; |
124 | |
f641fccb |
125 | ret = osdl_video_set_mode(&state, width, height, 16); |
126 | if (ret < 0) |
0ec348b9 |
127 | goto fail_fbdev_init; |
128 | |
f641fccb |
129 | g_screen_fbp = osdl_video_flip(&state); |
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130 | if (bpp == 16) |
131 | g_screen->pixels = g_screen_fbp; |
132 | else |
133 | // we have to fake this for now.. |
134 | g_screen->pixels = calloc(g_screen->pitch * height, 1); |
135 | |
136 | if (g_screen->pixels == NULL) { |
137 | err("fb NULL"); |
138 | goto fail_pixels; |
139 | } |
0ec348b9 |
140 | |
141 | dbg("returning %p", g_screen); |
142 | return g_screen; |
143 | |
144 | fail_pixels: |
f641fccb |
145 | osdl_video_finish(&state); |
0ec348b9 |
146 | fail_fbdev_init: |
147 | free(g_screen); |
148 | g_screen = NULL; |
149 | return NULL; |
150 | } |
151 | |
152 | DECLSPEC int SDLCALL |
153 | SDL_Flip(SDL_Surface *screen) |
154 | { |
0ec348b9 |
155 | trace("%p", screen); |
156 | |
157 | if (screen != g_screen) { |
158 | err("flip not on screen surface?"); |
159 | return -1; |
160 | } |
161 | |
162 | if (screen->format->BitsPerPixel == 8) { |
163 | int l = screen->pitch * screen->h; |
3cb98c5e |
164 | #ifdef __arm__ |
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165 | do_clut(g_screen_fbp, screen->pixels, g_8bpp_pal, l); |
166 | #else |
167 | Uint16 *d = g_screen_fbp; |
168 | Uint8 *s = screen->pixels; |
169 | |
170 | // XXX: perhaps optimize this sh*t |
171 | for (; l > 0; d++, s++, l--) |
172 | *d = g_8bpp_pal[*s]; |
173 | #endif |
174 | } |
175 | |
f641fccb |
176 | g_screen_fbp = osdl_video_flip(&state); |
0ec348b9 |
177 | |
178 | if (screen->format->BitsPerPixel != 8) |
179 | screen->pixels = g_screen_fbp; |
180 | |
181 | return 0; |
182 | } |
183 | |
184 | static int do_rect_clip(const SDL_Surface *s, SDL_Rect *r) |
185 | { |
186 | int x = r->x, y = r->y, w = r->w, h = r->h; |
187 | |
188 | if (x < 0) { |
189 | w += x; |
190 | if (w < 0) |
191 | w = 0; |
192 | x = 0; |
193 | } |
194 | if (y < 0) { |
195 | h += y; |
196 | if (h < 0) |
197 | h = 0; |
198 | y = 0; |
199 | } |
200 | if (x + w > s->w) { |
201 | w = s->w - x; |
202 | if (w < 0) |
203 | w = 0; |
204 | } |
205 | if (y + h > s->h) { |
206 | h = s->h - y; |
207 | if (h < 0) |
208 | h = 0; |
209 | } |
210 | |
211 | r->x = x; r->y = y; r->w = w; r->h = h; |
212 | return (w > 0 && h > 0) ? 0 : -1; |
213 | } |
214 | |
215 | DECLSPEC int SDLCALL |
216 | SDL_UpperBlit(SDL_Surface *src, SDL_Rect *srcrect, |
217 | SDL_Surface *dst, SDL_Rect *dstrect) |
218 | { |
219 | int sx = 0, sy = 0, sw, sh; |
220 | int dx = 0, dy = 0; |
221 | SDL_Rect tmprect = { 0, }; |
222 | |
223 | trace("%p, %p, %p, %p", src, srcrect, dst, dstrect); |
224 | |
225 | if (src == NULL || dst == NULL) |
226 | return -1; |
227 | |
228 | if (srcrect != NULL) { |
229 | // XXX: dst pos may need to be adjusted in some corner cases |
230 | if (do_rect_clip(src, srcrect) < 0) |
231 | return -1; |
232 | sx = srcrect->x; |
233 | sy = srcrect->y; |
234 | sw = srcrect->w; |
235 | sh = srcrect->h; |
236 | } else { |
237 | sw = src->w; |
238 | sh = src->h; |
239 | } |
240 | |
241 | if (dstrect == NULL) |
242 | dstrect = &tmprect; |
243 | |
244 | // SDL just uses source w and h |
245 | dstrect->w = sw; |
246 | dstrect->h = sh; |
247 | if (do_rect_clip(dst, dstrect) < 0) |
248 | return -1; |
249 | dx = dstrect->x; |
250 | dy = dstrect->y; |
251 | sw = dstrect->w; |
252 | sh = dstrect->h; |
253 | |
254 | dbg("(%d %d %d %d) -> (%d %d %d %d)", sx, sy, sw, sh, dx, dy, sw, sh); |
255 | |
256 | if (src->format->BitsPerPixel == dst->format->BitsPerPixel) { |
257 | int Bpp = src->format->BytesPerPixel; |
258 | int dpitch = dst->pitch; |
259 | int spitch = src->pitch; |
260 | Uint8 *d = (Uint8 *)dst->pixels + dpitch * dy + dx * Bpp; |
261 | Uint8 *s = (Uint8 *)src->pixels + spitch * sy + sx * Bpp; |
262 | |
263 | for (sw *= Bpp; sh > 0; d += dpitch, s += spitch, sh--) |
264 | memcpy(d, s, sw); |
265 | } |
3cb98c5e |
266 | else |
267 | not_supported(); |
0ec348b9 |
268 | |
269 | return 0; |
270 | } |
271 | |
272 | DECLSPEC SDL_Surface * SDLCALL |
273 | SDL_CreateRGBSurface(Uint32 flags, int width, int height, int depth, |
274 | Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask) |
275 | { |
276 | SDL_Surface *ret; |
277 | |
278 | trace("%08x, %d, %d, %d, %04x, %04x, %04x, %04x", |
279 | flags, width, height, depth, Rmask, Gmask, Bmask, Amask); |
280 | |
281 | ret = alloc_surface(width, height, depth); |
282 | if (ret == NULL) |
283 | return NULL; |
284 | |
285 | ret->pixels = calloc(ret->pitch * height, 1); |
286 | if (ret->pixels == NULL) |
287 | goto fail; |
288 | |
289 | dbg("returning %p", ret); |
290 | return ret; |
291 | |
292 | fail: |
293 | free(ret); |
294 | return NULL; |
295 | } |
296 | |
297 | DECLSPEC int SDLCALL |
298 | SDL_SetColors(SDL_Surface *surface, SDL_Color *colors, int firstcolor, int ncolors) |
299 | { |
300 | int i, to; |
301 | |
302 | trace("%p, %p, %d, %d", surface, colors, firstcolor, ncolors); |
303 | |
304 | if (surface != g_screen) |
305 | return 0; |
306 | |
307 | to = min(ARRAY_SIZE(g_8bpp_pal), firstcolor + ncolors); |
308 | for (i = firstcolor; i < to; i++) { |
309 | SDL_Color *c = &colors[i - firstcolor]; |
310 | int r = c->r, g = c->g, b = c->b; |
311 | // noiz2sa gets a good deal darker that real SDL, |
312 | // don't know what's going on there |
313 | /* |
314 | if (r < 0xf8 && (r & 7) > 3) r += 8; |
315 | if (g < 0xfc && (g & 3) > 1) g += 4; |
316 | if (b < 0xf8 && (b & 7) > 3) b += 8; |
317 | */ |
318 | g_8bpp_pal[i] = ((r << 8) & 0xf800) | ((g << 3) & 0x07e0) | (b >> 3); |
319 | // g_8bpp_pal[i] += 0x0821; |
320 | } |
321 | |
322 | return 0; |
323 | } |
324 | |
325 | DECLSPEC int SDLCALL |
326 | SDL_FillRect(SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color) |
327 | { |
328 | trace("%p, %p, %04x", dst, dstrect, color); |
329 | |
3cb98c5e |
330 | if (dst->format->BytesPerPixel != 1) { |
331 | not_supported(); |
0ec348b9 |
332 | return -1; |
333 | } |
334 | else |
335 | memset(dst->pixels, color, dst->pitch * dst->h); |
336 | |
337 | return 0; |
338 | } |
339 | |
340 | /* |
341 | DECLSPEC SDL_Surface * SDLCALL |
342 | SDL_CreateRGBSurfaceFrom(void *pixels, int width, int height, int depth, int pitch, |
343 | Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask) |
344 | { |
345 | } |
346 | */ |
347 | |
348 | DECLSPEC SDL_RWops * SDLCALL |
349 | SDL_RWFromFile(const char *file, const char *mode) |
350 | { |
351 | SDL_RWops *ret; |
352 | FILE *f; |
353 | |
354 | trace("%s, %s", file, mode); |
355 | |
356 | f = fopen(file, mode); |
357 | if (f == NULL) |
358 | return NULL; |
359 | |
360 | ret = calloc(1, sizeof(*ret)); |
361 | if (ret == NULL) { |
362 | fclose(f); |
363 | return NULL; |
364 | } |
365 | ret->hidden.stdio.fp = f; |
366 | |
367 | return ret; |
368 | } |
369 | |
370 | DECLSPEC void SDLCALL |
371 | SDL_FreeRW(SDL_RWops *area) |
372 | { |
373 | if (area->hidden.stdio.fp) { |
374 | fclose(area->hidden.stdio.fp); |
375 | area->hidden.stdio.fp = NULL; |
376 | } |
377 | free(area); |
378 | } |
379 | |
380 | DECLSPEC SDL_Surface * SDLCALL |
381 | SDL_LoadBMP_RW(SDL_RWops *src, int freesrc) |
382 | { |
383 | struct bmp_dib_v3 { |
384 | unsigned char magic[2]; |
385 | uint32_t filesz; |
386 | uint16_t creator1; |
387 | uint16_t creator2; |
388 | uint32_t bmp_offset; |
389 | uint32_t header_sz; |
390 | int32_t width; |
391 | int32_t height; |
392 | uint16_t nplanes; |
393 | uint16_t bitspp; |
394 | uint32_t compress_type; |
395 | uint32_t bmp_bytesz; |
396 | int32_t hres; |
397 | int32_t vres; |
398 | uint32_t ncolors; |
399 | uint32_t nimpcolors; |
400 | } __attribute__((packed)) bmp; |
401 | SDL_Surface *ret = NULL; |
402 | int data_size, read_size; |
3cb98c5e |
403 | uint8_t *tmp_buf = NULL; |
0ec348b9 |
404 | int i, bytespp; |
405 | FILE *f; |
406 | |
407 | trace("%p, %d", src, freesrc); |
408 | |
409 | f = src->hidden.stdio.fp; |
410 | if (f == NULL) |
411 | goto out; |
412 | |
413 | if (fread(&bmp, 1, sizeof(bmp), f) != sizeof(bmp)) { |
414 | err("bmp read error"); |
415 | goto out; |
416 | } |
417 | |
418 | if (bmp.magic[0] != 'B' || bmp.magic[1] != 'M' || bmp.header_sz != 40) { |
419 | err("unhandled BMP format, sz=%d", bmp.header_sz); |
420 | goto out; |
421 | } |
422 | |
423 | if ((unsigned)bmp.width > 0xffff || (unsigned)bmp.height > 0xffff) { |
424 | err("BMP size %dx%d out of range", bmp.width, bmp.height); |
425 | goto out; |
426 | } |
427 | |
428 | if (bmp.bitspp != 4) { |
429 | err("BMP unhandled bpp: %d", bmp.bitspp); |
430 | goto out; |
431 | } |
432 | |
433 | bytespp = bmp.bitspp < 8 ? 1 : (bmp.bitspp + 7) / 8; |
434 | data_size = bmp.width * bmp.height * bytespp; |
435 | tmp_buf = malloc(data_size); |
436 | if (tmp_buf == NULL) |
437 | goto out; |
438 | |
439 | if (fseek(f, bmp.bmp_offset, SEEK_SET) != 0) { |
440 | err("BMP seek error"); |
441 | goto out; |
442 | } |
443 | |
444 | read_size = bmp.width * bmp.bitspp / 8; |
445 | for (i = bmp.height - 1; i > 0; i--) { |
446 | if (fread((char *)tmp_buf + i * read_size, 1, read_size, f) != read_size) { |
447 | err("BMP read error"); |
448 | goto out; |
449 | } |
450 | } |
451 | |
452 | if (bmp.bitspp == 4) { |
453 | // just convert to 8bpp now |
454 | int c = bmp.width * bmp.height / 2; |
455 | uint8_t *p = tmp_buf; |
456 | for (i = c - 1; i >= 0; i--) { |
457 | p[i * 2 + 1] = p[i] & 0xf; |
458 | p[i * 2] = p[i] >> 4; |
459 | } |
460 | } |
461 | |
462 | ret = alloc_surface(bmp.width, bmp.height, 8); |
463 | if (ret == NULL) |
464 | goto out; |
465 | |
466 | ret->pixels = tmp_buf; |
467 | tmp_buf = NULL; |
468 | |
469 | out: |
470 | if (tmp_buf != NULL) |
471 | free(tmp_buf); |
472 | if (freesrc) |
473 | SDL_FreeRW(src); |
474 | |
475 | return ret; |
476 | } |
477 | |
478 | DECLSPEC SDL_Surface * SDLCALL |
479 | SDL_ConvertSurface(SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags) |
480 | { |
481 | SDL_Surface *ret; |
482 | void *data; |
483 | |
484 | trace("%p, %p, %08x", src, fmt, flags); |
485 | |
486 | if (src->format->BitsPerPixel != fmt->BitsPerPixel) { |
487 | err("convert: not implemented"); |
488 | return NULL; |
489 | } |
490 | |
491 | data = malloc(src->pitch * src->h); |
492 | if (data == NULL) |
493 | return NULL; |
494 | memcpy(data, src->pixels, src->pitch * src->h); |
495 | |
496 | ret = alloc_surface(src->w, src->h, fmt->BitsPerPixel); |
497 | if (ret == NULL) { |
498 | free(data); |
499 | return NULL; |
500 | } |
501 | ret->pixels = data; |
502 | return ret; |
503 | } |
504 | |
505 | DECLSPEC int SDLCALL |
506 | SDL_SetColorKey(SDL_Surface *surface, Uint32 flag, Uint32 key) |
507 | { |
508 | trace("%p, %08x, %04x", surface, flag, key); |
509 | return 0; |
510 | } |
511 | |
0ec348b9 |
512 | DECLSPEC void SDLCALL |
513 | SDL_WM_SetCaption(const char *title, const char *icon) |
514 | { |
515 | trace("%s, %s", title, icon); |
516 | } |
517 | |
518 | DECLSPEC int SDLCALL |
519 | SDL_ShowCursor(int toggle) |
520 | { |
521 | trace("%d", toggle); |
522 | return 0; |
523 | } |
524 | |
525 | DECLSPEC char * SDLCALL |
526 | SDL_GetError(void) |
527 | { |
528 | trace(""); |
529 | |
530 | return ""; |
531 | } |
532 | |