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 | |
b78828bf |
14 | #include "omapsdl.h" |
0ec348b9 |
15 | #include "linux/fbdev.h" |
3cb98c5e |
16 | #include "linux/oshide.h" |
0ec348b9 |
17 | |
18 | static SDL_Surface *g_screen; |
19 | static void *g_screen_fbp; |
20 | static Uint16 g_8bpp_pal[256]; |
21 | static Uint32 g_start_ticks; |
0ec348b9 |
22 | |
23 | static inline int min(int v1, int v2) |
24 | { |
25 | return v1 < v2 ? v1 : v2; |
26 | } |
27 | |
0ec348b9 |
28 | static SDL_Surface *alloc_surface(int w, int h, int bpp) |
29 | { |
30 | // SDL has some pointer overuse, every surface has a format, |
31 | // why make format accessible through pointer? |
32 | struct { |
33 | SDL_Surface s; |
34 | SDL_PixelFormat f; |
35 | } *ret; |
36 | |
37 | ret = calloc(1, sizeof(*ret)); |
38 | if (ret == NULL) |
39 | return NULL; |
40 | |
41 | ret->s.format = &ret->f; |
42 | ret->f.BitsPerPixel = bpp; |
43 | ret->f.BytesPerPixel = (bpp + 7) / 8; |
44 | |
45 | ret->s.w = w; |
46 | ret->s.h = h; |
47 | ret->s.pitch = w * ret->f.BytesPerPixel; |
48 | // XXX: more fields |
49 | |
50 | return &ret->s; |
51 | } |
52 | |
53 | DECLSPEC int SDLCALL |
54 | SDL_Init(Uint32 flags) |
55 | { |
56 | trace("%08x", flags); |
57 | |
3cb98c5e |
58 | if (g_start_ticks == 0) { |
b78828bf |
59 | omapsdl_input_init(); |
3cb98c5e |
60 | oshide_init(); |
b78828bf |
61 | omapsdl_config(); |
3cb98c5e |
62 | } |
63 | |
0ec348b9 |
64 | g_start_ticks = 0; |
65 | g_start_ticks = SDL_GetTicks(); |
66 | |
67 | return 0; |
68 | } |
69 | |
70 | DECLSPEC void SDLCALL |
71 | SDL_Quit(void) |
72 | { |
73 | trace(""); |
3cb98c5e |
74 | |
75 | if (g_start_ticks != 0) { |
76 | oshide_finish(); |
77 | g_start_ticks = 0; |
78 | } |
0ec348b9 |
79 | } |
80 | |
81 | DECLSPEC int SDLCALL |
82 | SDL_InitSubSystem(Uint32 flags) |
83 | { |
84 | trace("%08x", flags); |
85 | return 0; |
86 | } |
87 | |
88 | DECLSPEC void SDLCALL |
89 | SDL_QuitSubSystem(Uint32 flags) |
90 | { |
91 | trace("%08x", flags); |
92 | } |
93 | |
94 | DECLSPEC Uint32 SDLCALL |
95 | SDL_GetTicks(void) |
96 | { |
97 | struct timeval tv; |
98 | Uint32 ret; |
99 | |
100 | gettimeofday(&tv, NULL); |
101 | ret = tv.tv_sec * 1000; |
102 | ret += tv.tv_usec * 1048 >> 20; |
103 | |
104 | ret -= g_start_ticks; |
105 | dbg(" SDL_GetTicks %d", ret); |
106 | return ret; |
107 | } |
108 | |
109 | DECLSPEC SDL_Surface * SDLCALL |
110 | SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags) |
111 | { |
112 | struct vout_fbdev *fbdev; |
113 | |
114 | trace("%d, %d, %d, %08x", width, height, bpp, flags); |
115 | |
3cb98c5e |
116 | if (bpp == 0) |
117 | bpp = 16; |
118 | |
0ec348b9 |
119 | if (bpp != 8 && bpp != 16) { |
120 | err("unsupported bpp: %d\n", bpp); |
121 | return NULL; |
122 | } |
123 | |
124 | // XXX: destroy old g_screen? |
125 | |
126 | g_screen = alloc_surface(width, height, bpp); |
127 | if (g_screen == NULL) |
128 | return NULL; |
129 | |
130 | fbdev = vout_fbdev_init("/dev/fb0", &width, &height, 0); |
131 | if (fbdev == NULL) |
132 | goto fail_fbdev_init; |
133 | |
134 | g_screen_fbp = vout_fbdev_flip(fbdev); |
135 | if (bpp == 16) |
136 | g_screen->pixels = g_screen_fbp; |
137 | else |
138 | // we have to fake this for now.. |
139 | g_screen->pixels = calloc(g_screen->pitch * height, 1); |
140 | |
141 | if (g_screen->pixels == NULL) { |
142 | err("fb NULL"); |
143 | goto fail_pixels; |
144 | } |
145 | g_screen->hwdata = (void *)fbdev; |
146 | |
147 | dbg("returning %p", g_screen); |
148 | return g_screen; |
149 | |
150 | fail_pixels: |
151 | vout_fbdev_finish(fbdev); |
152 | fail_fbdev_init: |
153 | free(g_screen); |
154 | g_screen = NULL; |
155 | return NULL; |
156 | } |
157 | |
158 | DECLSPEC int SDLCALL |
159 | SDL_Flip(SDL_Surface *screen) |
160 | { |
161 | struct vout_fbdev *fbdev; |
162 | |
163 | trace("%p", screen); |
164 | |
165 | if (screen != g_screen) { |
166 | err("flip not on screen surface?"); |
167 | return -1; |
168 | } |
169 | |
170 | if (screen->format->BitsPerPixel == 8) { |
171 | int l = screen->pitch * screen->h; |
3cb98c5e |
172 | #ifdef __arm__ |
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173 | do_clut(g_screen_fbp, screen->pixels, g_8bpp_pal, l); |
174 | #else |
175 | Uint16 *d = g_screen_fbp; |
176 | Uint8 *s = screen->pixels; |
177 | |
178 | // XXX: perhaps optimize this sh*t |
179 | for (; l > 0; d++, s++, l--) |
180 | *d = g_8bpp_pal[*s]; |
181 | #endif |
182 | } |
183 | |
184 | fbdev = (void *)screen->hwdata; |
185 | g_screen_fbp = vout_fbdev_flip(fbdev); |
186 | |
187 | if (screen->format->BitsPerPixel != 8) |
188 | screen->pixels = g_screen_fbp; |
189 | |
190 | return 0; |
191 | } |
192 | |
193 | static int do_rect_clip(const SDL_Surface *s, SDL_Rect *r) |
194 | { |
195 | int x = r->x, y = r->y, w = r->w, h = r->h; |
196 | |
197 | if (x < 0) { |
198 | w += x; |
199 | if (w < 0) |
200 | w = 0; |
201 | x = 0; |
202 | } |
203 | if (y < 0) { |
204 | h += y; |
205 | if (h < 0) |
206 | h = 0; |
207 | y = 0; |
208 | } |
209 | if (x + w > s->w) { |
210 | w = s->w - x; |
211 | if (w < 0) |
212 | w = 0; |
213 | } |
214 | if (y + h > s->h) { |
215 | h = s->h - y; |
216 | if (h < 0) |
217 | h = 0; |
218 | } |
219 | |
220 | r->x = x; r->y = y; r->w = w; r->h = h; |
221 | return (w > 0 && h > 0) ? 0 : -1; |
222 | } |
223 | |
224 | DECLSPEC int SDLCALL |
225 | SDL_UpperBlit(SDL_Surface *src, SDL_Rect *srcrect, |
226 | SDL_Surface *dst, SDL_Rect *dstrect) |
227 | { |
228 | int sx = 0, sy = 0, sw, sh; |
229 | int dx = 0, dy = 0; |
230 | SDL_Rect tmprect = { 0, }; |
231 | |
232 | trace("%p, %p, %p, %p", src, srcrect, dst, dstrect); |
233 | |
234 | if (src == NULL || dst == NULL) |
235 | return -1; |
236 | |
237 | if (srcrect != NULL) { |
238 | // XXX: dst pos may need to be adjusted in some corner cases |
239 | if (do_rect_clip(src, srcrect) < 0) |
240 | return -1; |
241 | sx = srcrect->x; |
242 | sy = srcrect->y; |
243 | sw = srcrect->w; |
244 | sh = srcrect->h; |
245 | } else { |
246 | sw = src->w; |
247 | sh = src->h; |
248 | } |
249 | |
250 | if (dstrect == NULL) |
251 | dstrect = &tmprect; |
252 | |
253 | // SDL just uses source w and h |
254 | dstrect->w = sw; |
255 | dstrect->h = sh; |
256 | if (do_rect_clip(dst, dstrect) < 0) |
257 | return -1; |
258 | dx = dstrect->x; |
259 | dy = dstrect->y; |
260 | sw = dstrect->w; |
261 | sh = dstrect->h; |
262 | |
263 | dbg("(%d %d %d %d) -> (%d %d %d %d)", sx, sy, sw, sh, dx, dy, sw, sh); |
264 | |
265 | if (src->format->BitsPerPixel == dst->format->BitsPerPixel) { |
266 | int Bpp = src->format->BytesPerPixel; |
267 | int dpitch = dst->pitch; |
268 | int spitch = src->pitch; |
269 | Uint8 *d = (Uint8 *)dst->pixels + dpitch * dy + dx * Bpp; |
270 | Uint8 *s = (Uint8 *)src->pixels + spitch * sy + sx * Bpp; |
271 | |
272 | for (sw *= Bpp; sh > 0; d += dpitch, s += spitch, sh--) |
273 | memcpy(d, s, sw); |
274 | } |
3cb98c5e |
275 | else |
276 | not_supported(); |
0ec348b9 |
277 | |
278 | return 0; |
279 | } |
280 | |
281 | DECLSPEC SDL_Surface * SDLCALL |
282 | SDL_CreateRGBSurface(Uint32 flags, int width, int height, int depth, |
283 | Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask) |
284 | { |
285 | SDL_Surface *ret; |
286 | |
287 | trace("%08x, %d, %d, %d, %04x, %04x, %04x, %04x", |
288 | flags, width, height, depth, Rmask, Gmask, Bmask, Amask); |
289 | |
290 | ret = alloc_surface(width, height, depth); |
291 | if (ret == NULL) |
292 | return NULL; |
293 | |
294 | ret->pixels = calloc(ret->pitch * height, 1); |
295 | if (ret->pixels == NULL) |
296 | goto fail; |
297 | |
298 | dbg("returning %p", ret); |
299 | return ret; |
300 | |
301 | fail: |
302 | free(ret); |
303 | return NULL; |
304 | } |
305 | |
306 | DECLSPEC int SDLCALL |
307 | SDL_SetColors(SDL_Surface *surface, SDL_Color *colors, int firstcolor, int ncolors) |
308 | { |
309 | int i, to; |
310 | |
311 | trace("%p, %p, %d, %d", surface, colors, firstcolor, ncolors); |
312 | |
313 | if (surface != g_screen) |
314 | return 0; |
315 | |
316 | to = min(ARRAY_SIZE(g_8bpp_pal), firstcolor + ncolors); |
317 | for (i = firstcolor; i < to; i++) { |
318 | SDL_Color *c = &colors[i - firstcolor]; |
319 | int r = c->r, g = c->g, b = c->b; |
320 | // noiz2sa gets a good deal darker that real SDL, |
321 | // don't know what's going on there |
322 | /* |
323 | if (r < 0xf8 && (r & 7) > 3) r += 8; |
324 | if (g < 0xfc && (g & 3) > 1) g += 4; |
325 | if (b < 0xf8 && (b & 7) > 3) b += 8; |
326 | */ |
327 | g_8bpp_pal[i] = ((r << 8) & 0xf800) | ((g << 3) & 0x07e0) | (b >> 3); |
328 | // g_8bpp_pal[i] += 0x0821; |
329 | } |
330 | |
331 | return 0; |
332 | } |
333 | |
334 | DECLSPEC int SDLCALL |
335 | SDL_FillRect(SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color) |
336 | { |
337 | trace("%p, %p, %04x", dst, dstrect, color); |
338 | |
3cb98c5e |
339 | if (dst->format->BytesPerPixel != 1) { |
340 | not_supported(); |
0ec348b9 |
341 | return -1; |
342 | } |
343 | else |
344 | memset(dst->pixels, color, dst->pitch * dst->h); |
345 | |
346 | return 0; |
347 | } |
348 | |
349 | /* |
350 | DECLSPEC SDL_Surface * SDLCALL |
351 | SDL_CreateRGBSurfaceFrom(void *pixels, int width, int height, int depth, int pitch, |
352 | Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask) |
353 | { |
354 | } |
355 | */ |
356 | |
357 | DECLSPEC SDL_RWops * SDLCALL |
358 | SDL_RWFromFile(const char *file, const char *mode) |
359 | { |
360 | SDL_RWops *ret; |
361 | FILE *f; |
362 | |
363 | trace("%s, %s", file, mode); |
364 | |
365 | f = fopen(file, mode); |
366 | if (f == NULL) |
367 | return NULL; |
368 | |
369 | ret = calloc(1, sizeof(*ret)); |
370 | if (ret == NULL) { |
371 | fclose(f); |
372 | return NULL; |
373 | } |
374 | ret->hidden.stdio.fp = f; |
375 | |
376 | return ret; |
377 | } |
378 | |
379 | DECLSPEC void SDLCALL |
380 | SDL_FreeRW(SDL_RWops *area) |
381 | { |
382 | if (area->hidden.stdio.fp) { |
383 | fclose(area->hidden.stdio.fp); |
384 | area->hidden.stdio.fp = NULL; |
385 | } |
386 | free(area); |
387 | } |
388 | |
389 | DECLSPEC SDL_Surface * SDLCALL |
390 | SDL_LoadBMP_RW(SDL_RWops *src, int freesrc) |
391 | { |
392 | struct bmp_dib_v3 { |
393 | unsigned char magic[2]; |
394 | uint32_t filesz; |
395 | uint16_t creator1; |
396 | uint16_t creator2; |
397 | uint32_t bmp_offset; |
398 | uint32_t header_sz; |
399 | int32_t width; |
400 | int32_t height; |
401 | uint16_t nplanes; |
402 | uint16_t bitspp; |
403 | uint32_t compress_type; |
404 | uint32_t bmp_bytesz; |
405 | int32_t hres; |
406 | int32_t vres; |
407 | uint32_t ncolors; |
408 | uint32_t nimpcolors; |
409 | } __attribute__((packed)) bmp; |
410 | SDL_Surface *ret = NULL; |
411 | int data_size, read_size; |
3cb98c5e |
412 | uint8_t *tmp_buf = NULL; |
0ec348b9 |
413 | int i, bytespp; |
414 | FILE *f; |
415 | |
416 | trace("%p, %d", src, freesrc); |
417 | |
418 | f = src->hidden.stdio.fp; |
419 | if (f == NULL) |
420 | goto out; |
421 | |
422 | if (fread(&bmp, 1, sizeof(bmp), f) != sizeof(bmp)) { |
423 | err("bmp read error"); |
424 | goto out; |
425 | } |
426 | |
427 | if (bmp.magic[0] != 'B' || bmp.magic[1] != 'M' || bmp.header_sz != 40) { |
428 | err("unhandled BMP format, sz=%d", bmp.header_sz); |
429 | goto out; |
430 | } |
431 | |
432 | if ((unsigned)bmp.width > 0xffff || (unsigned)bmp.height > 0xffff) { |
433 | err("BMP size %dx%d out of range", bmp.width, bmp.height); |
434 | goto out; |
435 | } |
436 | |
437 | if (bmp.bitspp != 4) { |
438 | err("BMP unhandled bpp: %d", bmp.bitspp); |
439 | goto out; |
440 | } |
441 | |
442 | bytespp = bmp.bitspp < 8 ? 1 : (bmp.bitspp + 7) / 8; |
443 | data_size = bmp.width * bmp.height * bytespp; |
444 | tmp_buf = malloc(data_size); |
445 | if (tmp_buf == NULL) |
446 | goto out; |
447 | |
448 | if (fseek(f, bmp.bmp_offset, SEEK_SET) != 0) { |
449 | err("BMP seek error"); |
450 | goto out; |
451 | } |
452 | |
453 | read_size = bmp.width * bmp.bitspp / 8; |
454 | for (i = bmp.height - 1; i > 0; i--) { |
455 | if (fread((char *)tmp_buf + i * read_size, 1, read_size, f) != read_size) { |
456 | err("BMP read error"); |
457 | goto out; |
458 | } |
459 | } |
460 | |
461 | if (bmp.bitspp == 4) { |
462 | // just convert to 8bpp now |
463 | int c = bmp.width * bmp.height / 2; |
464 | uint8_t *p = tmp_buf; |
465 | for (i = c - 1; i >= 0; i--) { |
466 | p[i * 2 + 1] = p[i] & 0xf; |
467 | p[i * 2] = p[i] >> 4; |
468 | } |
469 | } |
470 | |
471 | ret = alloc_surface(bmp.width, bmp.height, 8); |
472 | if (ret == NULL) |
473 | goto out; |
474 | |
475 | ret->pixels = tmp_buf; |
476 | tmp_buf = NULL; |
477 | |
478 | out: |
479 | if (tmp_buf != NULL) |
480 | free(tmp_buf); |
481 | if (freesrc) |
482 | SDL_FreeRW(src); |
483 | |
484 | return ret; |
485 | } |
486 | |
487 | DECLSPEC SDL_Surface * SDLCALL |
488 | SDL_ConvertSurface(SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags) |
489 | { |
490 | SDL_Surface *ret; |
491 | void *data; |
492 | |
493 | trace("%p, %p, %08x", src, fmt, flags); |
494 | |
495 | if (src->format->BitsPerPixel != fmt->BitsPerPixel) { |
496 | err("convert: not implemented"); |
497 | return NULL; |
498 | } |
499 | |
500 | data = malloc(src->pitch * src->h); |
501 | if (data == NULL) |
502 | return NULL; |
503 | memcpy(data, src->pixels, src->pitch * src->h); |
504 | |
505 | ret = alloc_surface(src->w, src->h, fmt->BitsPerPixel); |
506 | if (ret == NULL) { |
507 | free(data); |
508 | return NULL; |
509 | } |
510 | ret->pixels = data; |
511 | return ret; |
512 | } |
513 | |
514 | DECLSPEC int SDLCALL |
515 | SDL_SetColorKey(SDL_Surface *surface, Uint32 flag, Uint32 key) |
516 | { |
517 | trace("%p, %08x, %04x", surface, flag, key); |
518 | return 0; |
519 | } |
520 | |
0ec348b9 |
521 | DECLSPEC void SDLCALL |
522 | SDL_WM_SetCaption(const char *title, const char *icon) |
523 | { |
524 | trace("%s, %s", title, icon); |
525 | } |
526 | |
527 | DECLSPEC int SDLCALL |
528 | SDL_ShowCursor(int toggle) |
529 | { |
530 | trace("%d", toggle); |
531 | return 0; |
532 | } |
533 | |
534 | DECLSPEC char * SDLCALL |
535 | SDL_GetError(void) |
536 | { |
537 | trace(""); |
538 | |
539 | return ""; |
540 | } |
541 | |