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