Commit | Line | Data |
---|---|---|
2446536b | 1 | /* |
2 | * libretro core glue for PicoDrive | |
3 | * (C) notaz, 2013 | |
4 | * | |
5 | * This work is licensed under the terms of MAME license. | |
6 | * See COPYING file in the top-level directory. | |
7 | */ | |
8 | ||
9 | #define _GNU_SOURCE 1 // mremap | |
10 | #include <stdio.h> | |
11 | #include <stdarg.h> | |
12 | #include <string.h> | |
e8b61936 | 13 | #ifndef _WIN32 |
2446536b | 14 | #include <sys/mman.h> |
e8b61936 | 15 | #else |
6f1133bc | 16 | #include <io.h> |
e8b61936 | 17 | #include <windows.h> |
6f1133bc | 18 | #include <sys/types.h> |
e8b61936 | 19 | #endif |
c25d78ee | 20 | #include <errno.h> |
2446536b | 21 | #ifdef __MACH__ |
22 | #include <libkern/OSCacheControl.h> | |
23 | #endif | |
24 | ||
25 | #include <pico/pico_int.h> | |
86b38dc4 | 26 | #include <pico/state.h> |
2446536b | 27 | #include "common/input_pico.h" |
28 | #include "common/version.h" | |
29 | #include "libretro.h" | |
30 | ||
8c8b7284 | 31 | #ifndef MAP_ANONYMOUS |
32 | #define MAP_ANONYMOUS MAP_ANON | |
33 | #endif | |
34 | ||
2446536b | 35 | static retro_video_refresh_t video_cb; |
36 | static retro_input_poll_t input_poll_cb; | |
37 | static retro_input_state_t input_state_cb; | |
38 | static retro_environment_t environ_cb; | |
39 | static retro_audio_sample_batch_t audio_batch_cb; | |
40 | ||
41 | static FILE *emu_log; | |
42 | ||
43 | #define VOUT_MAX_WIDTH 320 | |
44 | #define VOUT_MAX_HEIGHT 240 | |
45 | static void *vout_buf; | |
46 | static int vout_width, vout_height; | |
47 | ||
48 | static short __attribute__((aligned(4))) sndBuffer[2*44100/50]; | |
49 | ||
2446536b | 50 | static void snd_write(int len); |
51 | ||
52 | #ifdef _WIN32 | |
53 | #define SLASH '\\' | |
54 | #else | |
55 | #define SLASH '/' | |
56 | #endif | |
57 | ||
58 | /* functions called by the core */ | |
59 | ||
60 | void cache_flush_d_inval_i(void *start, void *end) | |
61 | { | |
62 | #ifdef __arm__ | |
63 | #if defined(__BLACKBERRY_QNX__) | |
64 | msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE); | |
65 | #elif defined(__MACH__) | |
66 | size_t len = (char *)end - (char *)start; | |
67 | sys_dcache_flush(start, len); | |
68 | sys_icache_invalidate(start, len); | |
69 | #else | |
70 | __clear_cache(start, end); | |
71 | #endif | |
72 | #endif | |
73 | } | |
74 | ||
e8b61936 | 75 | #ifdef _WIN32 |
6f1133bc T |
76 | /* mmap() replacement for Windows |
77 | * | |
78 | * Author: Mike Frysinger <vapier@gentoo.org> | |
79 | * Placed into the public domain | |
80 | */ | |
81 | ||
82 | /* References: | |
83 | * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx | |
84 | * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx | |
85 | * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx | |
86 | * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx | |
87 | */ | |
88 | ||
89 | #define PROT_READ 0x1 | |
90 | #define PROT_WRITE 0x2 | |
91 | /* This flag is only available in WinXP+ */ | |
92 | #ifdef FILE_MAP_EXECUTE | |
93 | #define PROT_EXEC 0x4 | |
94 | #else | |
95 | #define PROT_EXEC 0x0 | |
96 | #define FILE_MAP_EXECUTE 0 | |
97 | #endif | |
98 | ||
99 | #define MAP_SHARED 0x01 | |
100 | #define MAP_PRIVATE 0x02 | |
101 | #define MAP_ANONYMOUS 0x20 | |
102 | #define MAP_ANON MAP_ANONYMOUS | |
103 | #define MAP_FAILED ((void *) -1) | |
104 | ||
105 | #ifdef __USE_FILE_OFFSET64 | |
106 | # define DWORD_HI(x) (x >> 32) | |
107 | # define DWORD_LO(x) ((x) & 0xffffffff) | |
108 | #else | |
109 | # define DWORD_HI(x) (0) | |
110 | # define DWORD_LO(x) (x) | |
111 | #endif | |
112 | ||
113 | static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset) | |
2446536b | 114 | { |
6f1133bc T |
115 | if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC)) |
116 | return MAP_FAILED; | |
117 | if (fd == -1) { | |
118 | if (!(flags & MAP_ANON) || offset) | |
119 | return MAP_FAILED; | |
120 | } else if (flags & MAP_ANON) | |
121 | return MAP_FAILED; | |
122 | ||
123 | DWORD flProtect; | |
124 | if (prot & PROT_WRITE) { | |
125 | if (prot & PROT_EXEC) | |
126 | flProtect = PAGE_EXECUTE_READWRITE; | |
127 | else | |
128 | flProtect = PAGE_READWRITE; | |
129 | } else if (prot & PROT_EXEC) { | |
130 | if (prot & PROT_READ) | |
131 | flProtect = PAGE_EXECUTE_READ; | |
132 | else if (prot & PROT_EXEC) | |
133 | flProtect = PAGE_EXECUTE; | |
134 | } else | |
135 | flProtect = PAGE_READONLY; | |
136 | ||
137 | off_t end = length + offset; | |
138 | HANDLE mmap_fd, h; | |
139 | if (fd == -1) | |
140 | mmap_fd = INVALID_HANDLE_VALUE; | |
141 | else | |
142 | mmap_fd = (HANDLE)_get_osfhandle(fd); | |
143 | h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL); | |
144 | if (h == NULL) | |
145 | return MAP_FAILED; | |
146 | ||
147 | DWORD dwDesiredAccess; | |
148 | if (prot & PROT_WRITE) | |
149 | dwDesiredAccess = FILE_MAP_WRITE; | |
150 | else | |
151 | dwDesiredAccess = FILE_MAP_READ; | |
152 | if (prot & PROT_EXEC) | |
153 | dwDesiredAccess |= FILE_MAP_EXECUTE; | |
154 | if (flags & MAP_PRIVATE) | |
155 | dwDesiredAccess |= FILE_MAP_COPY; | |
156 | void *ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length); | |
157 | if (ret == NULL) { | |
158 | CloseHandle(h); | |
159 | ret = MAP_FAILED; | |
160 | } | |
161 | return ret; | |
e8b61936 | 162 | } |
2446536b | 163 | |
6f1133bc | 164 | static void munmap(void *addr, size_t length) |
e8b61936 | 165 | { |
6f1133bc T |
166 | UnmapViewOfFile(addr); |
167 | /* ruh-ro, we leaked handle from CreateFileMapping() ... */ | |
e8b61936 | 168 | } |
e8b61936 | 169 | #endif |
170 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) | |
171 | { | |
172 | #ifndef _WIN32 | |
173 | int flags = 0; | |
174 | void *ret = mmap((void*)addr,size,PROT_READ | PROT_WRITE, flags, -1, 0); | |
175 | if (addr != 0 && ret != (void *)addr) { | |
176 | lprintf("warning: wanted to map @%08lx, got %p\n", | |
177 | addr, ret); | |
178 | ||
179 | if (is_fixed) { | |
180 | munmap(ret, size); | |
181 | return NULL; | |
182 | } | |
183 | } | |
184 | #else | |
185 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
186 | void *req, *ret; | |
187 | ||
188 | req = (void *)addr; | |
189 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); | |
190 | if (ret == MAP_FAILED) { | |
191 | lprintf("mmap(%08lx, %zd) failed: %d\n", addr, size, errno); | |
192 | return NULL; | |
193 | } | |
194 | ||
195 | if (addr != 0 && ret != (void *)addr) { | |
196 | lprintf("warning: wanted to map @%08lx, got %p\n", | |
197 | addr, ret); | |
198 | ||
199 | if (is_fixed) { | |
200 | munmap(ret, size); | |
201 | return NULL; | |
202 | } | |
203 | } | |
204 | #endif | |
2446536b | 205 | |
206 | return ret; | |
207 | } | |
208 | ||
209 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) | |
210 | { | |
8c8b7284 | 211 | #ifdef __linux__ |
2446536b | 212 | void *ret = mremap(ptr, oldsize, newsize, 0); |
213 | if (ret == MAP_FAILED) | |
214 | return NULL; | |
215 | ||
216 | return ret; | |
8c8b7284 | 217 | #else |
218 | void *tmp, *ret; | |
219 | size_t preserve_size; | |
220 | ||
221 | preserve_size = oldsize; | |
222 | if (preserve_size > newsize) | |
223 | preserve_size = newsize; | |
224 | tmp = malloc(preserve_size); | |
225 | if (tmp == NULL) | |
226 | return NULL; | |
227 | memcpy(tmp, ptr, preserve_size); | |
228 | ||
229 | munmap(ptr, oldsize); | |
230 | ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE, | |
231 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); | |
232 | if (ret == MAP_FAILED) { | |
233 | free(tmp); | |
234 | return NULL; | |
235 | } | |
236 | memcpy(ret, tmp, preserve_size); | |
237 | free(tmp); | |
238 | return ret; | |
239 | #endif | |
2446536b | 240 | } |
241 | ||
242 | void plat_munmap(void *ptr, size_t size) | |
243 | { | |
244 | if (ptr != NULL) | |
245 | munmap(ptr, size); | |
246 | } | |
247 | ||
c25d78ee | 248 | int plat_mem_set_exec(void *ptr, size_t size) |
249 | { | |
e8b61936 | 250 | #ifdef _WIN32 |
251 | int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0); | |
252 | if (ret == 0) | |
253 | lprintf("mprotect(%p, %zd) failed: %d\n", ptr, size, 0); | |
254 | #else | |
255 | int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC); | |
256 | if (ret != 0) | |
257 | lprintf("mprotect(%p, %zd) failed: %d\n", ptr, size, errno); | |
258 | #endif | |
c25d78ee | 259 | return ret; |
260 | } | |
261 | ||
2446536b | 262 | void emu_video_mode_change(int start_line, int line_count, int is_32cols) |
263 | { | |
264 | memset(vout_buf, 0, 320 * 240 * 2); | |
265 | vout_width = is_32cols ? 256 : 320; | |
266 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); | |
267 | } | |
268 | ||
269 | void emu_32x_startup(void) | |
270 | { | |
2446536b | 271 | } |
272 | ||
273 | #ifndef ANDROID | |
274 | ||
275 | void lprintf(const char *fmt, ...) | |
276 | { | |
277 | va_list list; | |
278 | ||
279 | va_start(list, fmt); | |
280 | fprintf(emu_log, "PicoDrive: "); | |
281 | vfprintf(emu_log, fmt, list); | |
282 | va_end(list); | |
283 | fflush(emu_log); | |
284 | } | |
285 | ||
286 | #else | |
287 | ||
288 | #include <android/log.h> | |
289 | ||
290 | void lprintf(const char *fmt, ...) | |
291 | { | |
292 | va_list list; | |
293 | ||
294 | va_start(list, fmt); | |
295 | __android_log_vprint(ANDROID_LOG_INFO, "PicoDrive", fmt, list); | |
296 | va_end(list); | |
297 | } | |
298 | ||
299 | #endif | |
300 | ||
301 | /* libretro */ | |
302 | void retro_set_environment(retro_environment_t cb) | |
303 | { | |
304 | static const struct retro_variable vars[] = { | |
305 | //{ "region", "Region; Auto|NTSC|PAL" }, | |
306 | { NULL, NULL }, | |
307 | }; | |
308 | ||
309 | environ_cb = cb; | |
310 | ||
311 | cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars); | |
312 | } | |
313 | ||
314 | void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; } | |
315 | void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; } | |
316 | void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; } | |
317 | void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; } | |
318 | void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; } | |
319 | ||
320 | unsigned retro_api_version(void) | |
321 | { | |
322 | return RETRO_API_VERSION; | |
323 | } | |
324 | ||
325 | void retro_set_controller_port_device(unsigned port, unsigned device) | |
326 | { | |
327 | } | |
328 | ||
329 | void retro_get_system_info(struct retro_system_info *info) | |
330 | { | |
331 | memset(info, 0, sizeof(*info)); | |
332 | info->library_name = "PicoDrive"; | |
333 | info->library_version = VERSION; | |
53b2e51c | 334 | info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms"; |
2446536b | 335 | info->need_fullpath = true; |
336 | } | |
337 | ||
338 | void retro_get_system_av_info(struct retro_system_av_info *info) | |
339 | { | |
340 | memset(info, 0, sizeof(*info)); | |
341 | info->timing.fps = Pico.m.pal ? 50 : 60; | |
342 | info->timing.sample_rate = 44100; | |
343 | info->geometry.base_width = 320; | |
344 | info->geometry.base_height = 240; | |
345 | info->geometry.max_width = VOUT_MAX_WIDTH; | |
346 | info->geometry.max_height = VOUT_MAX_HEIGHT; | |
347 | info->geometry.aspect_ratio = 4.0 / 3.0; | |
348 | } | |
349 | ||
86b38dc4 | 350 | /* savestates */ |
351 | struct savestate_state { | |
352 | const char *load_buf; | |
353 | char *save_buf; | |
354 | size_t size; | |
355 | size_t pos; | |
356 | }; | |
357 | ||
358 | size_t state_read(void *p, size_t size, size_t nmemb, void *file) | |
359 | { | |
360 | struct savestate_state *state = file; | |
361 | size_t bsize = size * nmemb; | |
362 | ||
363 | if (state->pos + bsize > state->size) { | |
364 | lprintf("savestate error: %u/%u\n", | |
365 | state->pos + bsize, state->size); | |
366 | bsize = state->size - state->pos; | |
367 | if ((int)bsize <= 0) | |
368 | return 0; | |
369 | } | |
370 | ||
371 | memcpy(p, state->load_buf + state->pos, bsize); | |
372 | state->pos += bsize; | |
373 | return bsize; | |
374 | } | |
375 | ||
376 | size_t state_write(void *p, size_t size, size_t nmemb, void *file) | |
377 | { | |
378 | struct savestate_state *state = file; | |
379 | size_t bsize = size * nmemb; | |
380 | ||
381 | if (state->pos + bsize > state->size) { | |
382 | lprintf("savestate error: %u/%u\n", | |
383 | state->pos + bsize, state->size); | |
384 | bsize = state->size - state->pos; | |
385 | if ((int)bsize <= 0) | |
386 | return 0; | |
387 | } | |
388 | ||
389 | memcpy(state->save_buf + state->pos, p, bsize); | |
390 | state->pos += bsize; | |
391 | return bsize; | |
392 | } | |
393 | ||
394 | size_t state_skip(void *p, size_t size, size_t nmemb, void *file) | |
395 | { | |
396 | struct savestate_state *state = file; | |
397 | size_t bsize = size * nmemb; | |
398 | ||
399 | state->pos += bsize; | |
400 | return bsize; | |
401 | } | |
402 | ||
403 | size_t state_eof(void *file) | |
404 | { | |
405 | struct savestate_state *state = file; | |
406 | ||
407 | return state->pos >= state->size; | |
408 | } | |
409 | ||
410 | int state_fseek(void *file, long offset, int whence) | |
411 | { | |
412 | struct savestate_state *state = file; | |
413 | ||
414 | switch (whence) { | |
415 | case SEEK_SET: | |
416 | state->pos = offset; | |
417 | break; | |
418 | case SEEK_CUR: | |
419 | state->pos += offset; | |
420 | break; | |
421 | case SEEK_END: | |
422 | state->pos = state->size + offset; | |
423 | break; | |
424 | } | |
425 | return (int)state->pos; | |
426 | } | |
427 | ||
428 | /* savestate sizes vary wildly depending if cd/32x or | |
429 | * carthw is active, so run the whole thing to get size */ | |
2446536b | 430 | size_t retro_serialize_size(void) |
431 | { | |
86b38dc4 | 432 | struct savestate_state state = { 0, }; |
433 | int ret; | |
434 | ||
435 | ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek); | |
436 | if (ret != 0) | |
437 | return 0; | |
438 | ||
439 | return state.pos; | |
2446536b | 440 | } |
441 | ||
442 | bool retro_serialize(void *data, size_t size) | |
443 | { | |
86b38dc4 | 444 | struct savestate_state state = { 0, }; |
445 | int ret; | |
446 | ||
447 | state.save_buf = data; | |
448 | state.size = size; | |
449 | state.pos = 0; | |
450 | ||
451 | ret = PicoStateFP(&state, 1, NULL, state_write, | |
452 | NULL, state_fseek); | |
453 | return ret == 0; | |
2446536b | 454 | } |
455 | ||
456 | bool retro_unserialize(const void *data, size_t size) | |
457 | { | |
86b38dc4 | 458 | struct savestate_state state = { 0, }; |
459 | int ret; | |
460 | ||
461 | state.load_buf = data; | |
462 | state.size = size; | |
463 | state.pos = 0; | |
464 | ||
465 | ret = PicoStateFP(&state, 0, state_read, NULL, | |
466 | state_eof, state_fseek); | |
467 | return ret == 0; | |
2446536b | 468 | } |
469 | ||
470 | /* cheats - TODO */ | |
471 | void retro_cheat_reset(void) | |
472 | { | |
473 | } | |
474 | ||
475 | void retro_cheat_set(unsigned index, bool enabled, const char *code) | |
476 | { | |
477 | } | |
478 | ||
479 | /* multidisk support */ | |
480 | static bool disk_ejected; | |
481 | static unsigned int disk_current_index; | |
482 | static unsigned int disk_count; | |
483 | static struct disks_state { | |
484 | char *fname; | |
485 | } disks[8]; | |
486 | ||
487 | static bool disk_set_eject_state(bool ejected) | |
488 | { | |
489 | // TODO? | |
490 | disk_ejected = ejected; | |
491 | return true; | |
492 | } | |
493 | ||
494 | static bool disk_get_eject_state(void) | |
495 | { | |
496 | return disk_ejected; | |
497 | } | |
498 | ||
499 | static unsigned int disk_get_image_index(void) | |
500 | { | |
501 | return disk_current_index; | |
502 | } | |
503 | ||
504 | static bool disk_set_image_index(unsigned int index) | |
505 | { | |
506 | cd_img_type cd_type; | |
507 | int ret; | |
508 | ||
509 | if (index >= sizeof(disks) / sizeof(disks[0])) | |
510 | return false; | |
511 | ||
512 | if (disks[index].fname == NULL) { | |
513 | lprintf("missing disk #%u\n", index); | |
514 | ||
515 | // RetroArch specifies "no disk" with index == count, | |
516 | // so don't fail here.. | |
517 | disk_current_index = index; | |
518 | return true; | |
519 | } | |
520 | ||
521 | lprintf("switching to disk %u: \"%s\"\n", index, | |
522 | disks[index].fname); | |
523 | ||
524 | ret = -1; | |
525 | cd_type = PicoCdCheck(disks[index].fname, NULL); | |
526 | if (cd_type != CIT_NOT_CD) | |
527 | ret = Insert_CD(disks[index].fname, cd_type); | |
528 | if (ret != 0) { | |
529 | lprintf("Load failed, invalid CD image?\n"); | |
530 | return 0; | |
531 | } | |
532 | ||
533 | disk_current_index = index; | |
534 | return true; | |
535 | } | |
536 | ||
537 | static unsigned int disk_get_num_images(void) | |
538 | { | |
539 | return disk_count; | |
540 | } | |
541 | ||
542 | static bool disk_replace_image_index(unsigned index, | |
543 | const struct retro_game_info *info) | |
544 | { | |
545 | bool ret = true; | |
546 | ||
547 | if (index >= sizeof(disks) / sizeof(disks[0])) | |
548 | return false; | |
549 | ||
550 | if (disks[index].fname != NULL) | |
551 | free(disks[index].fname); | |
552 | disks[index].fname = NULL; | |
553 | ||
554 | if (info != NULL) { | |
555 | disks[index].fname = strdup(info->path); | |
556 | if (index == disk_current_index) | |
557 | ret = disk_set_image_index(index); | |
558 | } | |
559 | ||
560 | return ret; | |
561 | } | |
562 | ||
563 | static bool disk_add_image_index(void) | |
564 | { | |
565 | if (disk_count >= sizeof(disks) / sizeof(disks[0])) | |
566 | return false; | |
567 | ||
568 | disk_count++; | |
569 | return true; | |
570 | } | |
571 | ||
572 | static struct retro_disk_control_callback disk_control = { | |
573 | .set_eject_state = disk_set_eject_state, | |
574 | .get_eject_state = disk_get_eject_state, | |
575 | .get_image_index = disk_get_image_index, | |
576 | .set_image_index = disk_set_image_index, | |
577 | .get_num_images = disk_get_num_images, | |
578 | .replace_image_index = disk_replace_image_index, | |
579 | .add_image_index = disk_add_image_index, | |
580 | }; | |
581 | ||
582 | static void disk_tray_open(void) | |
583 | { | |
584 | lprintf("cd tray open\n"); | |
585 | disk_ejected = 1; | |
586 | } | |
587 | ||
588 | static void disk_tray_close(void) | |
589 | { | |
590 | lprintf("cd tray close\n"); | |
591 | disk_ejected = 0; | |
592 | } | |
593 | ||
594 | ||
595 | static const char * const biosfiles_us[] = { | |
596 | "us_scd1_9210", "us_scd2_9306", "SegaCDBIOS9303", "bios_CD_U" | |
597 | }; | |
598 | static const char * const biosfiles_eu[] = { | |
599 | "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303", "bios_CD_E" | |
600 | }; | |
601 | static const char * const biosfiles_jp[] = { | |
602 | "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J" | |
603 | }; | |
604 | ||
605 | static void make_system_path(char *buf, size_t buf_size, | |
606 | const char *name, const char *ext) | |
607 | { | |
608 | const char *dir = NULL; | |
609 | ||
610 | if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) { | |
611 | snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext); | |
612 | } | |
613 | else { | |
614 | snprintf(buf, buf_size, "%s%s", name, ext); | |
615 | } | |
616 | } | |
617 | ||
618 | static const char *find_bios(int *region, const char *cd_fname) | |
619 | { | |
620 | const char * const *files; | |
621 | static char path[256]; | |
622 | int i, count; | |
623 | FILE *f = NULL; | |
624 | ||
625 | if (*region == 4) { // US | |
626 | files = biosfiles_us; | |
627 | count = sizeof(biosfiles_us) / sizeof(char *); | |
628 | } else if (*region == 8) { // EU | |
629 | files = biosfiles_eu; | |
630 | count = sizeof(biosfiles_eu) / sizeof(char *); | |
631 | } else if (*region == 1 || *region == 2) { | |
632 | files = biosfiles_jp; | |
633 | count = sizeof(biosfiles_jp) / sizeof(char *); | |
634 | } else { | |
635 | return NULL; | |
636 | } | |
637 | ||
638 | for (i = 0; i < count; i++) | |
639 | { | |
640 | make_system_path(path, sizeof(path), files[i], ".bin"); | |
641 | f = fopen(path, "rb"); | |
642 | if (f != NULL) | |
643 | break; | |
644 | ||
645 | make_system_path(path, sizeof(path), files[i], ".zip"); | |
646 | f = fopen(path, "rb"); | |
647 | if (f != NULL) | |
648 | break; | |
649 | } | |
650 | ||
651 | if (f != NULL) { | |
652 | lprintf("using bios: %s\n", path); | |
653 | fclose(f); | |
654 | return path; | |
655 | } | |
656 | ||
657 | return NULL; | |
658 | } | |
659 | ||
660 | bool retro_load_game(const struct retro_game_info *info) | |
661 | { | |
662 | enum media_type_e media_type; | |
663 | static char carthw_path[256]; | |
664 | size_t i; | |
665 | ||
666 | enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565; | |
667 | if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { | |
668 | lprintf("RGB565 suppot required, sorry\n"); | |
669 | return false; | |
670 | } | |
671 | ||
672 | if (info == NULL || info->path == NULL) { | |
673 | lprintf("info->path required\n"); | |
674 | return false; | |
675 | } | |
676 | ||
677 | for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) { | |
678 | if (disks[i].fname != NULL) { | |
679 | free(disks[i].fname); | |
680 | disks[i].fname = NULL; | |
681 | } | |
682 | } | |
683 | ||
684 | disk_current_index = 0; | |
685 | disk_count = 1; | |
686 | disks[0].fname = strdup(info->path); | |
687 | ||
688 | make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg"); | |
689 | ||
690 | media_type = PicoLoadMedia(info->path, carthw_path, | |
691 | find_bios, NULL); | |
692 | ||
693 | switch (media_type) { | |
694 | case PM_BAD_DETECT: | |
695 | lprintf("Failed to detect ROM/CD image type.\n"); | |
696 | return false; | |
697 | case PM_BAD_CD: | |
698 | lprintf("Invalid CD image\n"); | |
699 | return false; | |
700 | case PM_BAD_CD_NO_BIOS: | |
701 | lprintf("Missing BIOS\n"); | |
702 | return false; | |
703 | case PM_ERROR: | |
704 | lprintf("Load error\n"); | |
705 | return false; | |
706 | default: | |
707 | break; | |
708 | } | |
709 | ||
710 | PicoLoopPrepare(); | |
711 | ||
712 | PicoWriteSound = snd_write; | |
713 | memset(sndBuffer, 0, sizeof(sndBuffer)); | |
714 | PsndOut = sndBuffer; | |
715 | PsndRerate(1); | |
716 | ||
717 | return true; | |
718 | } | |
719 | ||
720 | bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info) | |
721 | { | |
722 | return false; | |
723 | } | |
724 | ||
725 | void retro_unload_game(void) | |
726 | { | |
727 | } | |
728 | ||
729 | unsigned retro_get_region(void) | |
730 | { | |
731 | return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC; | |
732 | } | |
733 | ||
734 | void *retro_get_memory_data(unsigned id) | |
735 | { | |
736 | if (id != RETRO_MEMORY_SAVE_RAM) | |
737 | return NULL; | |
738 | ||
739 | if (PicoAHW & PAHW_MCD) | |
740 | return Pico_mcd->bram; | |
741 | else | |
742 | return SRam.data; | |
743 | } | |
744 | ||
745 | size_t retro_get_memory_size(unsigned id) | |
746 | { | |
747 | if (id != RETRO_MEMORY_SAVE_RAM) | |
748 | return 0; | |
749 | ||
750 | if (PicoAHW & PAHW_MCD) | |
751 | // bram | |
752 | return 0x2000; | |
753 | else | |
754 | return SRam.size; | |
755 | } | |
756 | ||
757 | void retro_reset(void) | |
758 | { | |
759 | PicoReset(); | |
760 | } | |
761 | ||
762 | static const unsigned short retro_pico_map[] = { | |
763 | [RETRO_DEVICE_ID_JOYPAD_B] = 1 << GBTN_B, | |
764 | [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << GBTN_A, | |
765 | [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << GBTN_MODE, | |
766 | [RETRO_DEVICE_ID_JOYPAD_START] = 1 << GBTN_START, | |
767 | [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << GBTN_UP, | |
768 | [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << GBTN_DOWN, | |
769 | [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << GBTN_LEFT, | |
770 | [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << GBTN_RIGHT, | |
771 | [RETRO_DEVICE_ID_JOYPAD_A] = 1 << GBTN_C, | |
772 | [RETRO_DEVICE_ID_JOYPAD_X] = 1 << GBTN_Y, | |
773 | [RETRO_DEVICE_ID_JOYPAD_L] = 1 << GBTN_X, | |
774 | [RETRO_DEVICE_ID_JOYPAD_R] = 1 << GBTN_Z, | |
775 | }; | |
776 | #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0])) | |
777 | ||
778 | static void snd_write(int len) | |
779 | { | |
780 | audio_batch_cb(PsndOut, len / 4); | |
781 | } | |
782 | ||
783 | void retro_run(void) | |
784 | { | |
785 | bool updated = false; | |
786 | int pad, i; | |
787 | ||
788 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) | |
789 | ; //update_variables(true); | |
790 | ||
791 | input_poll_cb(); | |
792 | ||
793 | PicoPad[0] = PicoPad[1] = 0; | |
794 | for (pad = 0; pad < 2; pad++) | |
795 | for (i = 0; i < RETRO_PICO_MAP_LEN; i++) | |
796 | if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i)) | |
797 | PicoPad[pad] |= retro_pico_map[i]; | |
798 | ||
799 | PicoFrame(); | |
800 | ||
801 | video_cb(vout_buf, vout_width, vout_height, vout_width * 2); | |
802 | } | |
803 | ||
804 | void retro_init(void) | |
805 | { | |
806 | int level; | |
807 | ||
808 | #ifdef IOS | |
809 | emu_log = fopen("/User/Documents/PicoDrive.log", "w"); | |
810 | if (emu_log == NULL) | |
811 | emu_log = fopen("PicoDrive.log", "w"); | |
812 | if (emu_log == NULL) | |
813 | #endif | |
814 | emu_log = stdout; | |
815 | ||
816 | level = 0; | |
817 | environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level); | |
818 | ||
819 | environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control); | |
820 | ||
821 | PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 | |
720bfc5d | 822 | | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX |
823 | | POPT_EN_32X|POPT_EN_PWM | |
824 | | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER; | |
825 | #ifdef __arm__ | |
826 | PicoOpt |= POPT_EN_SVP_DRC; | |
827 | #endif | |
2446536b | 828 | PsndRate = 44100; |
829 | PicoAutoRgnOrder = 0x184; // US, EU, JP | |
830 | PicoCDBuffers = 0; | |
831 | ||
2446536b | 832 | vout_width = 320; |
833 | vout_height = 240; | |
834 | vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2); | |
835 | ||
836 | PicoInit(); | |
41946d70 | 837 | PicoDrawSetOutFormat(PDF_RGB555, 0); |
2446536b | 838 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
839 | ||
840 | //PicoMessage = plat_status_msg_busy_next; | |
841 | PicoMCDopenTray = disk_tray_open; | |
842 | PicoMCDcloseTray = disk_tray_close; | |
843 | } | |
844 | ||
845 | void retro_deinit(void) | |
846 | { | |
847 | PicoExit(); | |
848 | } |