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 | { | |
e8b61936 | 172 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; |
173 | void *req, *ret; | |
174 | ||
175 | req = (void *)addr; | |
176 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); | |
177 | if (ret == MAP_FAILED) { | |
178 | lprintf("mmap(%08lx, %zd) failed: %d\n", addr, size, errno); | |
179 | return NULL; | |
180 | } | |
181 | ||
182 | if (addr != 0 && ret != (void *)addr) { | |
183 | lprintf("warning: wanted to map @%08lx, got %p\n", | |
184 | addr, ret); | |
185 | ||
186 | if (is_fixed) { | |
187 | munmap(ret, size); | |
188 | return NULL; | |
189 | } | |
190 | } | |
2446536b | 191 | |
192 | return ret; | |
193 | } | |
194 | ||
195 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) | |
196 | { | |
8c8b7284 | 197 | #ifdef __linux__ |
2446536b | 198 | void *ret = mremap(ptr, oldsize, newsize, 0); |
199 | if (ret == MAP_FAILED) | |
200 | return NULL; | |
201 | ||
202 | return ret; | |
8c8b7284 | 203 | #else |
204 | void *tmp, *ret; | |
205 | size_t preserve_size; | |
206 | ||
207 | preserve_size = oldsize; | |
208 | if (preserve_size > newsize) | |
209 | preserve_size = newsize; | |
210 | tmp = malloc(preserve_size); | |
211 | if (tmp == NULL) | |
212 | return NULL; | |
213 | memcpy(tmp, ptr, preserve_size); | |
214 | ||
215 | munmap(ptr, oldsize); | |
216 | ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE, | |
217 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); | |
218 | if (ret == MAP_FAILED) { | |
219 | free(tmp); | |
220 | return NULL; | |
221 | } | |
222 | memcpy(ret, tmp, preserve_size); | |
223 | free(tmp); | |
224 | return ret; | |
225 | #endif | |
2446536b | 226 | } |
227 | ||
228 | void plat_munmap(void *ptr, size_t size) | |
229 | { | |
230 | if (ptr != NULL) | |
231 | munmap(ptr, size); | |
232 | } | |
233 | ||
c25d78ee | 234 | int plat_mem_set_exec(void *ptr, size_t size) |
235 | { | |
e8b61936 | 236 | #ifdef _WIN32 |
237 | int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0); | |
238 | if (ret == 0) | |
239 | lprintf("mprotect(%p, %zd) failed: %d\n", ptr, size, 0); | |
240 | #else | |
241 | int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC); | |
242 | if (ret != 0) | |
243 | lprintf("mprotect(%p, %zd) failed: %d\n", ptr, size, errno); | |
244 | #endif | |
c25d78ee | 245 | return ret; |
246 | } | |
247 | ||
2446536b | 248 | void emu_video_mode_change(int start_line, int line_count, int is_32cols) |
249 | { | |
250 | memset(vout_buf, 0, 320 * 240 * 2); | |
251 | vout_width = is_32cols ? 256 : 320; | |
252 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); | |
253 | } | |
254 | ||
255 | void emu_32x_startup(void) | |
256 | { | |
2446536b | 257 | } |
258 | ||
259 | #ifndef ANDROID | |
260 | ||
261 | void lprintf(const char *fmt, ...) | |
262 | { | |
263 | va_list list; | |
264 | ||
265 | va_start(list, fmt); | |
266 | fprintf(emu_log, "PicoDrive: "); | |
267 | vfprintf(emu_log, fmt, list); | |
268 | va_end(list); | |
269 | fflush(emu_log); | |
270 | } | |
271 | ||
272 | #else | |
273 | ||
274 | #include <android/log.h> | |
275 | ||
276 | void lprintf(const char *fmt, ...) | |
277 | { | |
278 | va_list list; | |
279 | ||
280 | va_start(list, fmt); | |
281 | __android_log_vprint(ANDROID_LOG_INFO, "PicoDrive", fmt, list); | |
282 | va_end(list); | |
283 | } | |
284 | ||
285 | #endif | |
286 | ||
287 | /* libretro */ | |
288 | void retro_set_environment(retro_environment_t cb) | |
289 | { | |
290 | static const struct retro_variable vars[] = { | |
291 | //{ "region", "Region; Auto|NTSC|PAL" }, | |
292 | { NULL, NULL }, | |
293 | }; | |
294 | ||
295 | environ_cb = cb; | |
296 | ||
297 | cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars); | |
298 | } | |
299 | ||
300 | void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; } | |
301 | void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; } | |
302 | void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; } | |
303 | void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; } | |
304 | void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; } | |
305 | ||
306 | unsigned retro_api_version(void) | |
307 | { | |
308 | return RETRO_API_VERSION; | |
309 | } | |
310 | ||
311 | void retro_set_controller_port_device(unsigned port, unsigned device) | |
312 | { | |
313 | } | |
314 | ||
315 | void retro_get_system_info(struct retro_system_info *info) | |
316 | { | |
317 | memset(info, 0, sizeof(*info)); | |
318 | info->library_name = "PicoDrive"; | |
319 | info->library_version = VERSION; | |
53b2e51c | 320 | info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms"; |
2446536b | 321 | info->need_fullpath = true; |
322 | } | |
323 | ||
324 | void retro_get_system_av_info(struct retro_system_av_info *info) | |
325 | { | |
326 | memset(info, 0, sizeof(*info)); | |
327 | info->timing.fps = Pico.m.pal ? 50 : 60; | |
328 | info->timing.sample_rate = 44100; | |
329 | info->geometry.base_width = 320; | |
330 | info->geometry.base_height = 240; | |
331 | info->geometry.max_width = VOUT_MAX_WIDTH; | |
332 | info->geometry.max_height = VOUT_MAX_HEIGHT; | |
333 | info->geometry.aspect_ratio = 4.0 / 3.0; | |
334 | } | |
335 | ||
86b38dc4 | 336 | /* savestates */ |
337 | struct savestate_state { | |
338 | const char *load_buf; | |
339 | char *save_buf; | |
340 | size_t size; | |
341 | size_t pos; | |
342 | }; | |
343 | ||
344 | size_t state_read(void *p, size_t size, size_t nmemb, void *file) | |
345 | { | |
346 | struct savestate_state *state = file; | |
347 | size_t bsize = size * nmemb; | |
348 | ||
349 | if (state->pos + bsize > state->size) { | |
350 | lprintf("savestate error: %u/%u\n", | |
351 | state->pos + bsize, state->size); | |
352 | bsize = state->size - state->pos; | |
353 | if ((int)bsize <= 0) | |
354 | return 0; | |
355 | } | |
356 | ||
357 | memcpy(p, state->load_buf + state->pos, bsize); | |
358 | state->pos += bsize; | |
359 | return bsize; | |
360 | } | |
361 | ||
362 | size_t state_write(void *p, size_t size, size_t nmemb, void *file) | |
363 | { | |
364 | struct savestate_state *state = file; | |
365 | size_t bsize = size * nmemb; | |
366 | ||
367 | if (state->pos + bsize > state->size) { | |
368 | lprintf("savestate error: %u/%u\n", | |
369 | state->pos + bsize, state->size); | |
370 | bsize = state->size - state->pos; | |
371 | if ((int)bsize <= 0) | |
372 | return 0; | |
373 | } | |
374 | ||
375 | memcpy(state->save_buf + state->pos, p, bsize); | |
376 | state->pos += bsize; | |
377 | return bsize; | |
378 | } | |
379 | ||
380 | size_t state_skip(void *p, size_t size, size_t nmemb, void *file) | |
381 | { | |
382 | struct savestate_state *state = file; | |
383 | size_t bsize = size * nmemb; | |
384 | ||
385 | state->pos += bsize; | |
386 | return bsize; | |
387 | } | |
388 | ||
389 | size_t state_eof(void *file) | |
390 | { | |
391 | struct savestate_state *state = file; | |
392 | ||
393 | return state->pos >= state->size; | |
394 | } | |
395 | ||
396 | int state_fseek(void *file, long offset, int whence) | |
397 | { | |
398 | struct savestate_state *state = file; | |
399 | ||
400 | switch (whence) { | |
401 | case SEEK_SET: | |
402 | state->pos = offset; | |
403 | break; | |
404 | case SEEK_CUR: | |
405 | state->pos += offset; | |
406 | break; | |
407 | case SEEK_END: | |
408 | state->pos = state->size + offset; | |
409 | break; | |
410 | } | |
411 | return (int)state->pos; | |
412 | } | |
413 | ||
414 | /* savestate sizes vary wildly depending if cd/32x or | |
415 | * carthw is active, so run the whole thing to get size */ | |
2446536b | 416 | size_t retro_serialize_size(void) |
417 | { | |
86b38dc4 | 418 | struct savestate_state state = { 0, }; |
419 | int ret; | |
420 | ||
421 | ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek); | |
422 | if (ret != 0) | |
423 | return 0; | |
424 | ||
425 | return state.pos; | |
2446536b | 426 | } |
427 | ||
428 | bool retro_serialize(void *data, size_t size) | |
429 | { | |
86b38dc4 | 430 | struct savestate_state state = { 0, }; |
431 | int ret; | |
432 | ||
433 | state.save_buf = data; | |
434 | state.size = size; | |
435 | state.pos = 0; | |
436 | ||
437 | ret = PicoStateFP(&state, 1, NULL, state_write, | |
438 | NULL, state_fseek); | |
439 | return ret == 0; | |
2446536b | 440 | } |
441 | ||
442 | bool retro_unserialize(const void *data, size_t size) | |
443 | { | |
86b38dc4 | 444 | struct savestate_state state = { 0, }; |
445 | int ret; | |
446 | ||
447 | state.load_buf = data; | |
448 | state.size = size; | |
449 | state.pos = 0; | |
450 | ||
451 | ret = PicoStateFP(&state, 0, state_read, NULL, | |
452 | state_eof, state_fseek); | |
453 | return ret == 0; | |
2446536b | 454 | } |
455 | ||
456 | /* cheats - TODO */ | |
457 | void retro_cheat_reset(void) | |
458 | { | |
459 | } | |
460 | ||
461 | void retro_cheat_set(unsigned index, bool enabled, const char *code) | |
462 | { | |
463 | } | |
464 | ||
465 | /* multidisk support */ | |
466 | static bool disk_ejected; | |
467 | static unsigned int disk_current_index; | |
468 | static unsigned int disk_count; | |
469 | static struct disks_state { | |
470 | char *fname; | |
471 | } disks[8]; | |
472 | ||
473 | static bool disk_set_eject_state(bool ejected) | |
474 | { | |
475 | // TODO? | |
476 | disk_ejected = ejected; | |
477 | return true; | |
478 | } | |
479 | ||
480 | static bool disk_get_eject_state(void) | |
481 | { | |
482 | return disk_ejected; | |
483 | } | |
484 | ||
485 | static unsigned int disk_get_image_index(void) | |
486 | { | |
487 | return disk_current_index; | |
488 | } | |
489 | ||
490 | static bool disk_set_image_index(unsigned int index) | |
491 | { | |
492 | cd_img_type cd_type; | |
493 | int ret; | |
494 | ||
495 | if (index >= sizeof(disks) / sizeof(disks[0])) | |
496 | return false; | |
497 | ||
498 | if (disks[index].fname == NULL) { | |
499 | lprintf("missing disk #%u\n", index); | |
500 | ||
501 | // RetroArch specifies "no disk" with index == count, | |
502 | // so don't fail here.. | |
503 | disk_current_index = index; | |
504 | return true; | |
505 | } | |
506 | ||
507 | lprintf("switching to disk %u: \"%s\"\n", index, | |
508 | disks[index].fname); | |
509 | ||
510 | ret = -1; | |
511 | cd_type = PicoCdCheck(disks[index].fname, NULL); | |
512 | if (cd_type != CIT_NOT_CD) | |
513 | ret = Insert_CD(disks[index].fname, cd_type); | |
514 | if (ret != 0) { | |
515 | lprintf("Load failed, invalid CD image?\n"); | |
516 | return 0; | |
517 | } | |
518 | ||
519 | disk_current_index = index; | |
520 | return true; | |
521 | } | |
522 | ||
523 | static unsigned int disk_get_num_images(void) | |
524 | { | |
525 | return disk_count; | |
526 | } | |
527 | ||
528 | static bool disk_replace_image_index(unsigned index, | |
529 | const struct retro_game_info *info) | |
530 | { | |
531 | bool ret = true; | |
532 | ||
533 | if (index >= sizeof(disks) / sizeof(disks[0])) | |
534 | return false; | |
535 | ||
536 | if (disks[index].fname != NULL) | |
537 | free(disks[index].fname); | |
538 | disks[index].fname = NULL; | |
539 | ||
540 | if (info != NULL) { | |
541 | disks[index].fname = strdup(info->path); | |
542 | if (index == disk_current_index) | |
543 | ret = disk_set_image_index(index); | |
544 | } | |
545 | ||
546 | return ret; | |
547 | } | |
548 | ||
549 | static bool disk_add_image_index(void) | |
550 | { | |
551 | if (disk_count >= sizeof(disks) / sizeof(disks[0])) | |
552 | return false; | |
553 | ||
554 | disk_count++; | |
555 | return true; | |
556 | } | |
557 | ||
558 | static struct retro_disk_control_callback disk_control = { | |
559 | .set_eject_state = disk_set_eject_state, | |
560 | .get_eject_state = disk_get_eject_state, | |
561 | .get_image_index = disk_get_image_index, | |
562 | .set_image_index = disk_set_image_index, | |
563 | .get_num_images = disk_get_num_images, | |
564 | .replace_image_index = disk_replace_image_index, | |
565 | .add_image_index = disk_add_image_index, | |
566 | }; | |
567 | ||
568 | static void disk_tray_open(void) | |
569 | { | |
570 | lprintf("cd tray open\n"); | |
571 | disk_ejected = 1; | |
572 | } | |
573 | ||
574 | static void disk_tray_close(void) | |
575 | { | |
576 | lprintf("cd tray close\n"); | |
577 | disk_ejected = 0; | |
578 | } | |
579 | ||
580 | ||
581 | static const char * const biosfiles_us[] = { | |
582 | "us_scd1_9210", "us_scd2_9306", "SegaCDBIOS9303", "bios_CD_U" | |
583 | }; | |
584 | static const char * const biosfiles_eu[] = { | |
585 | "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303", "bios_CD_E" | |
586 | }; | |
587 | static const char * const biosfiles_jp[] = { | |
588 | "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J" | |
589 | }; | |
590 | ||
591 | static void make_system_path(char *buf, size_t buf_size, | |
592 | const char *name, const char *ext) | |
593 | { | |
594 | const char *dir = NULL; | |
595 | ||
596 | if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) { | |
597 | snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext); | |
598 | } | |
599 | else { | |
600 | snprintf(buf, buf_size, "%s%s", name, ext); | |
601 | } | |
602 | } | |
603 | ||
604 | static const char *find_bios(int *region, const char *cd_fname) | |
605 | { | |
606 | const char * const *files; | |
607 | static char path[256]; | |
608 | int i, count; | |
609 | FILE *f = NULL; | |
610 | ||
611 | if (*region == 4) { // US | |
612 | files = biosfiles_us; | |
613 | count = sizeof(biosfiles_us) / sizeof(char *); | |
614 | } else if (*region == 8) { // EU | |
615 | files = biosfiles_eu; | |
616 | count = sizeof(biosfiles_eu) / sizeof(char *); | |
617 | } else if (*region == 1 || *region == 2) { | |
618 | files = biosfiles_jp; | |
619 | count = sizeof(biosfiles_jp) / sizeof(char *); | |
620 | } else { | |
621 | return NULL; | |
622 | } | |
623 | ||
624 | for (i = 0; i < count; i++) | |
625 | { | |
626 | make_system_path(path, sizeof(path), files[i], ".bin"); | |
627 | f = fopen(path, "rb"); | |
628 | if (f != NULL) | |
629 | break; | |
630 | ||
631 | make_system_path(path, sizeof(path), files[i], ".zip"); | |
632 | f = fopen(path, "rb"); | |
633 | if (f != NULL) | |
634 | break; | |
635 | } | |
636 | ||
637 | if (f != NULL) { | |
638 | lprintf("using bios: %s\n", path); | |
639 | fclose(f); | |
640 | return path; | |
641 | } | |
642 | ||
643 | return NULL; | |
644 | } | |
645 | ||
646 | bool retro_load_game(const struct retro_game_info *info) | |
647 | { | |
648 | enum media_type_e media_type; | |
649 | static char carthw_path[256]; | |
650 | size_t i; | |
651 | ||
652 | enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565; | |
653 | if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { | |
654 | lprintf("RGB565 suppot required, sorry\n"); | |
655 | return false; | |
656 | } | |
657 | ||
658 | if (info == NULL || info->path == NULL) { | |
659 | lprintf("info->path required\n"); | |
660 | return false; | |
661 | } | |
662 | ||
663 | for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) { | |
664 | if (disks[i].fname != NULL) { | |
665 | free(disks[i].fname); | |
666 | disks[i].fname = NULL; | |
667 | } | |
668 | } | |
669 | ||
670 | disk_current_index = 0; | |
671 | disk_count = 1; | |
672 | disks[0].fname = strdup(info->path); | |
673 | ||
674 | make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg"); | |
675 | ||
676 | media_type = PicoLoadMedia(info->path, carthw_path, | |
677 | find_bios, NULL); | |
678 | ||
679 | switch (media_type) { | |
680 | case PM_BAD_DETECT: | |
681 | lprintf("Failed to detect ROM/CD image type.\n"); | |
682 | return false; | |
683 | case PM_BAD_CD: | |
684 | lprintf("Invalid CD image\n"); | |
685 | return false; | |
686 | case PM_BAD_CD_NO_BIOS: | |
687 | lprintf("Missing BIOS\n"); | |
688 | return false; | |
689 | case PM_ERROR: | |
690 | lprintf("Load error\n"); | |
691 | return false; | |
692 | default: | |
693 | break; | |
694 | } | |
695 | ||
696 | PicoLoopPrepare(); | |
697 | ||
698 | PicoWriteSound = snd_write; | |
699 | memset(sndBuffer, 0, sizeof(sndBuffer)); | |
700 | PsndOut = sndBuffer; | |
701 | PsndRerate(1); | |
702 | ||
703 | return true; | |
704 | } | |
705 | ||
706 | bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info) | |
707 | { | |
708 | return false; | |
709 | } | |
710 | ||
711 | void retro_unload_game(void) | |
712 | { | |
713 | } | |
714 | ||
715 | unsigned retro_get_region(void) | |
716 | { | |
717 | return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC; | |
718 | } | |
719 | ||
720 | void *retro_get_memory_data(unsigned id) | |
721 | { | |
722 | if (id != RETRO_MEMORY_SAVE_RAM) | |
723 | return NULL; | |
724 | ||
725 | if (PicoAHW & PAHW_MCD) | |
726 | return Pico_mcd->bram; | |
727 | else | |
728 | return SRam.data; | |
729 | } | |
730 | ||
731 | size_t retro_get_memory_size(unsigned id) | |
732 | { | |
733 | if (id != RETRO_MEMORY_SAVE_RAM) | |
734 | return 0; | |
735 | ||
736 | if (PicoAHW & PAHW_MCD) | |
737 | // bram | |
738 | return 0x2000; | |
739 | else | |
740 | return SRam.size; | |
741 | } | |
742 | ||
743 | void retro_reset(void) | |
744 | { | |
745 | PicoReset(); | |
746 | } | |
747 | ||
748 | static const unsigned short retro_pico_map[] = { | |
749 | [RETRO_DEVICE_ID_JOYPAD_B] = 1 << GBTN_B, | |
750 | [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << GBTN_A, | |
751 | [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << GBTN_MODE, | |
752 | [RETRO_DEVICE_ID_JOYPAD_START] = 1 << GBTN_START, | |
753 | [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << GBTN_UP, | |
754 | [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << GBTN_DOWN, | |
755 | [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << GBTN_LEFT, | |
756 | [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << GBTN_RIGHT, | |
757 | [RETRO_DEVICE_ID_JOYPAD_A] = 1 << GBTN_C, | |
758 | [RETRO_DEVICE_ID_JOYPAD_X] = 1 << GBTN_Y, | |
759 | [RETRO_DEVICE_ID_JOYPAD_L] = 1 << GBTN_X, | |
760 | [RETRO_DEVICE_ID_JOYPAD_R] = 1 << GBTN_Z, | |
761 | }; | |
762 | #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0])) | |
763 | ||
764 | static void snd_write(int len) | |
765 | { | |
766 | audio_batch_cb(PsndOut, len / 4); | |
767 | } | |
768 | ||
769 | void retro_run(void) | |
770 | { | |
771 | bool updated = false; | |
772 | int pad, i; | |
773 | ||
774 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) | |
775 | ; //update_variables(true); | |
776 | ||
777 | input_poll_cb(); | |
778 | ||
779 | PicoPad[0] = PicoPad[1] = 0; | |
780 | for (pad = 0; pad < 2; pad++) | |
781 | for (i = 0; i < RETRO_PICO_MAP_LEN; i++) | |
782 | if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i)) | |
783 | PicoPad[pad] |= retro_pico_map[i]; | |
784 | ||
785 | PicoFrame(); | |
786 | ||
787 | video_cb(vout_buf, vout_width, vout_height, vout_width * 2); | |
788 | } | |
789 | ||
790 | void retro_init(void) | |
791 | { | |
792 | int level; | |
793 | ||
794 | #ifdef IOS | |
795 | emu_log = fopen("/User/Documents/PicoDrive.log", "w"); | |
796 | if (emu_log == NULL) | |
797 | emu_log = fopen("PicoDrive.log", "w"); | |
798 | if (emu_log == NULL) | |
799 | #endif | |
800 | emu_log = stdout; | |
801 | ||
802 | level = 0; | |
803 | environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level); | |
804 | ||
805 | environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control); | |
806 | ||
807 | PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 | |
720bfc5d | 808 | | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX |
809 | | POPT_EN_32X|POPT_EN_PWM | |
810 | | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER; | |
811 | #ifdef __arm__ | |
812 | PicoOpt |= POPT_EN_SVP_DRC; | |
813 | #endif | |
2446536b | 814 | PsndRate = 44100; |
815 | PicoAutoRgnOrder = 0x184; // US, EU, JP | |
816 | PicoCDBuffers = 0; | |
817 | ||
2446536b | 818 | vout_width = 320; |
819 | vout_height = 240; | |
820 | vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2); | |
821 | ||
822 | PicoInit(); | |
41946d70 | 823 | PicoDrawSetOutFormat(PDF_RGB555, 0); |
2446536b | 824 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
825 | ||
826 | //PicoMessage = plat_status_msg_busy_next; | |
827 | PicoMCDopenTray = disk_tray_open; | |
828 | PicoMCDcloseTray = disk_tray_close; | |
829 | } | |
830 | ||
831 | void retro_deinit(void) | |
832 | { | |
833 | PicoExit(); | |
834 | } |