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> |
13 | #include <sys/mman.h> |
c25d78ee |
14 | #include <errno.h> |
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15 | #ifdef __MACH__ |
16 | #include <libkern/OSCacheControl.h> |
17 | #endif |
18 | |
19 | #include <pico/pico_int.h> |
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20 | #include <pico/state.h> |
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21 | #include "common/input_pico.h" |
22 | #include "common/version.h" |
23 | #include "libretro.h" |
24 | |
8c8b7284 |
25 | #ifndef MAP_ANONYMOUS |
26 | #define MAP_ANONYMOUS MAP_ANON |
27 | #endif |
28 | |
2446536b |
29 | static retro_video_refresh_t video_cb; |
30 | static retro_input_poll_t input_poll_cb; |
31 | static retro_input_state_t input_state_cb; |
32 | static retro_environment_t environ_cb; |
33 | static retro_audio_sample_batch_t audio_batch_cb; |
34 | |
35 | static FILE *emu_log; |
36 | |
37 | #define VOUT_MAX_WIDTH 320 |
38 | #define VOUT_MAX_HEIGHT 240 |
39 | static void *vout_buf; |
40 | static int vout_width, vout_height; |
41 | |
42 | static short __attribute__((aligned(4))) sndBuffer[2*44100/50]; |
43 | |
2446536b |
44 | static void snd_write(int len); |
45 | |
46 | #ifdef _WIN32 |
47 | #define SLASH '\\' |
48 | #else |
49 | #define SLASH '/' |
50 | #endif |
51 | |
52 | /* functions called by the core */ |
53 | |
54 | void cache_flush_d_inval_i(void *start, void *end) |
55 | { |
56 | #ifdef __arm__ |
57 | #if defined(__BLACKBERRY_QNX__) |
58 | msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE); |
59 | #elif defined(__MACH__) |
60 | size_t len = (char *)end - (char *)start; |
61 | sys_dcache_flush(start, len); |
62 | sys_icache_invalidate(start, len); |
63 | #else |
64 | __clear_cache(start, end); |
65 | #endif |
66 | #endif |
67 | } |
68 | |
69 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) |
70 | { |
71 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; |
72 | void *req, *ret; |
73 | |
74 | req = (void *)addr; |
75 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); |
c25d78ee |
76 | if (ret == MAP_FAILED) { |
77 | lprintf("mmap(%08lx, %zd) failed: %d\n", addr, size, errno); |
2446536b |
78 | return NULL; |
c25d78ee |
79 | } |
2446536b |
80 | |
81 | if (addr != 0 && ret != (void *)addr) { |
82 | lprintf("warning: wanted to map @%08lx, got %p\n", |
83 | addr, ret); |
84 | |
85 | if (is_fixed) { |
86 | munmap(ret, size); |
87 | return NULL; |
88 | } |
89 | } |
90 | |
91 | return ret; |
92 | } |
93 | |
94 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
95 | { |
8c8b7284 |
96 | #ifdef __linux__ |
2446536b |
97 | void *ret = mremap(ptr, oldsize, newsize, 0); |
98 | if (ret == MAP_FAILED) |
99 | return NULL; |
100 | |
101 | return ret; |
8c8b7284 |
102 | #else |
103 | void *tmp, *ret; |
104 | size_t preserve_size; |
105 | |
106 | preserve_size = oldsize; |
107 | if (preserve_size > newsize) |
108 | preserve_size = newsize; |
109 | tmp = malloc(preserve_size); |
110 | if (tmp == NULL) |
111 | return NULL; |
112 | memcpy(tmp, ptr, preserve_size); |
113 | |
114 | munmap(ptr, oldsize); |
115 | ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE, |
116 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
117 | if (ret == MAP_FAILED) { |
118 | free(tmp); |
119 | return NULL; |
120 | } |
121 | memcpy(ret, tmp, preserve_size); |
122 | free(tmp); |
123 | return ret; |
124 | #endif |
2446536b |
125 | } |
126 | |
127 | void plat_munmap(void *ptr, size_t size) |
128 | { |
129 | if (ptr != NULL) |
130 | munmap(ptr, size); |
131 | } |
132 | |
c25d78ee |
133 | int plat_mem_set_exec(void *ptr, size_t size) |
134 | { |
135 | int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC); |
136 | if (ret != 0) |
137 | lprintf("mprotect(%p, %zd) failed: %d\n", ptr, size, errno); |
138 | |
139 | return ret; |
140 | } |
141 | |
2446536b |
142 | void emu_video_mode_change(int start_line, int line_count, int is_32cols) |
143 | { |
144 | memset(vout_buf, 0, 320 * 240 * 2); |
145 | vout_width = is_32cols ? 256 : 320; |
146 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
147 | } |
148 | |
149 | void emu_32x_startup(void) |
150 | { |
2446536b |
151 | } |
152 | |
153 | #ifndef ANDROID |
154 | |
155 | void lprintf(const char *fmt, ...) |
156 | { |
157 | va_list list; |
158 | |
159 | va_start(list, fmt); |
160 | fprintf(emu_log, "PicoDrive: "); |
161 | vfprintf(emu_log, fmt, list); |
162 | va_end(list); |
163 | fflush(emu_log); |
164 | } |
165 | |
166 | #else |
167 | |
168 | #include <android/log.h> |
169 | |
170 | void lprintf(const char *fmt, ...) |
171 | { |
172 | va_list list; |
173 | |
174 | va_start(list, fmt); |
175 | __android_log_vprint(ANDROID_LOG_INFO, "PicoDrive", fmt, list); |
176 | va_end(list); |
177 | } |
178 | |
179 | #endif |
180 | |
181 | /* libretro */ |
182 | void retro_set_environment(retro_environment_t cb) |
183 | { |
184 | static const struct retro_variable vars[] = { |
185 | //{ "region", "Region; Auto|NTSC|PAL" }, |
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186 | { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" }, |
187 | { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" }, |
2446536b |
188 | { NULL, NULL }, |
189 | }; |
190 | |
191 | environ_cb = cb; |
192 | |
193 | cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars); |
194 | } |
195 | |
196 | void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; } |
197 | void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; } |
198 | void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; } |
199 | void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; } |
200 | void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; } |
201 | |
202 | unsigned retro_api_version(void) |
203 | { |
204 | return RETRO_API_VERSION; |
205 | } |
206 | |
207 | void retro_set_controller_port_device(unsigned port, unsigned device) |
208 | { |
209 | } |
210 | |
211 | void retro_get_system_info(struct retro_system_info *info) |
212 | { |
213 | memset(info, 0, sizeof(*info)); |
214 | info->library_name = "PicoDrive"; |
215 | info->library_version = VERSION; |
53b2e51c |
216 | info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms"; |
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217 | info->need_fullpath = true; |
218 | } |
219 | |
220 | void retro_get_system_av_info(struct retro_system_av_info *info) |
221 | { |
222 | memset(info, 0, sizeof(*info)); |
223 | info->timing.fps = Pico.m.pal ? 50 : 60; |
224 | info->timing.sample_rate = 44100; |
225 | info->geometry.base_width = 320; |
226 | info->geometry.base_height = 240; |
227 | info->geometry.max_width = VOUT_MAX_WIDTH; |
228 | info->geometry.max_height = VOUT_MAX_HEIGHT; |
229 | info->geometry.aspect_ratio = 4.0 / 3.0; |
230 | } |
231 | |
86b38dc4 |
232 | /* savestates */ |
233 | struct savestate_state { |
234 | const char *load_buf; |
235 | char *save_buf; |
236 | size_t size; |
237 | size_t pos; |
238 | }; |
239 | |
240 | size_t state_read(void *p, size_t size, size_t nmemb, void *file) |
241 | { |
242 | struct savestate_state *state = file; |
243 | size_t bsize = size * nmemb; |
244 | |
245 | if (state->pos + bsize > state->size) { |
246 | lprintf("savestate error: %u/%u\n", |
247 | state->pos + bsize, state->size); |
248 | bsize = state->size - state->pos; |
249 | if ((int)bsize <= 0) |
250 | return 0; |
251 | } |
252 | |
253 | memcpy(p, state->load_buf + state->pos, bsize); |
254 | state->pos += bsize; |
255 | return bsize; |
256 | } |
257 | |
258 | size_t state_write(void *p, size_t size, size_t nmemb, void *file) |
259 | { |
260 | struct savestate_state *state = file; |
261 | size_t bsize = size * nmemb; |
262 | |
263 | if (state->pos + bsize > state->size) { |
264 | lprintf("savestate error: %u/%u\n", |
265 | state->pos + bsize, state->size); |
266 | bsize = state->size - state->pos; |
267 | if ((int)bsize <= 0) |
268 | return 0; |
269 | } |
270 | |
271 | memcpy(state->save_buf + state->pos, p, bsize); |
272 | state->pos += bsize; |
273 | return bsize; |
274 | } |
275 | |
276 | size_t state_skip(void *p, size_t size, size_t nmemb, void *file) |
277 | { |
278 | struct savestate_state *state = file; |
279 | size_t bsize = size * nmemb; |
280 | |
281 | state->pos += bsize; |
282 | return bsize; |
283 | } |
284 | |
285 | size_t state_eof(void *file) |
286 | { |
287 | struct savestate_state *state = file; |
288 | |
289 | return state->pos >= state->size; |
290 | } |
291 | |
292 | int state_fseek(void *file, long offset, int whence) |
293 | { |
294 | struct savestate_state *state = file; |
295 | |
296 | switch (whence) { |
297 | case SEEK_SET: |
298 | state->pos = offset; |
299 | break; |
300 | case SEEK_CUR: |
301 | state->pos += offset; |
302 | break; |
303 | case SEEK_END: |
304 | state->pos = state->size + offset; |
305 | break; |
306 | } |
307 | return (int)state->pos; |
308 | } |
309 | |
310 | /* savestate sizes vary wildly depending if cd/32x or |
311 | * carthw is active, so run the whole thing to get size */ |
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312 | size_t retro_serialize_size(void) |
313 | { |
86b38dc4 |
314 | struct savestate_state state = { 0, }; |
315 | int ret; |
316 | |
317 | ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek); |
318 | if (ret != 0) |
319 | return 0; |
320 | |
321 | return state.pos; |
2446536b |
322 | } |
323 | |
324 | bool retro_serialize(void *data, size_t size) |
325 | { |
86b38dc4 |
326 | struct savestate_state state = { 0, }; |
327 | int ret; |
328 | |
329 | state.save_buf = data; |
330 | state.size = size; |
331 | state.pos = 0; |
332 | |
333 | ret = PicoStateFP(&state, 1, NULL, state_write, |
334 | NULL, state_fseek); |
335 | return ret == 0; |
2446536b |
336 | } |
337 | |
338 | bool retro_unserialize(const void *data, size_t size) |
339 | { |
86b38dc4 |
340 | struct savestate_state state = { 0, }; |
341 | int ret; |
342 | |
343 | state.load_buf = data; |
344 | state.size = size; |
345 | state.pos = 0; |
346 | |
347 | ret = PicoStateFP(&state, 0, state_read, NULL, |
348 | state_eof, state_fseek); |
349 | return ret == 0; |
2446536b |
350 | } |
351 | |
352 | /* cheats - TODO */ |
353 | void retro_cheat_reset(void) |
354 | { |
355 | } |
356 | |
357 | void retro_cheat_set(unsigned index, bool enabled, const char *code) |
358 | { |
359 | } |
360 | |
361 | /* multidisk support */ |
362 | static bool disk_ejected; |
363 | static unsigned int disk_current_index; |
364 | static unsigned int disk_count; |
365 | static struct disks_state { |
366 | char *fname; |
367 | } disks[8]; |
368 | |
369 | static bool disk_set_eject_state(bool ejected) |
370 | { |
371 | // TODO? |
372 | disk_ejected = ejected; |
373 | return true; |
374 | } |
375 | |
376 | static bool disk_get_eject_state(void) |
377 | { |
378 | return disk_ejected; |
379 | } |
380 | |
381 | static unsigned int disk_get_image_index(void) |
382 | { |
383 | return disk_current_index; |
384 | } |
385 | |
386 | static bool disk_set_image_index(unsigned int index) |
387 | { |
388 | cd_img_type cd_type; |
389 | int ret; |
390 | |
391 | if (index >= sizeof(disks) / sizeof(disks[0])) |
392 | return false; |
393 | |
394 | if (disks[index].fname == NULL) { |
395 | lprintf("missing disk #%u\n", index); |
396 | |
397 | // RetroArch specifies "no disk" with index == count, |
398 | // so don't fail here.. |
399 | disk_current_index = index; |
400 | return true; |
401 | } |
402 | |
403 | lprintf("switching to disk %u: \"%s\"\n", index, |
404 | disks[index].fname); |
405 | |
406 | ret = -1; |
407 | cd_type = PicoCdCheck(disks[index].fname, NULL); |
408 | if (cd_type != CIT_NOT_CD) |
409 | ret = Insert_CD(disks[index].fname, cd_type); |
410 | if (ret != 0) { |
411 | lprintf("Load failed, invalid CD image?\n"); |
412 | return 0; |
413 | } |
414 | |
415 | disk_current_index = index; |
416 | return true; |
417 | } |
418 | |
419 | static unsigned int disk_get_num_images(void) |
420 | { |
421 | return disk_count; |
422 | } |
423 | |
424 | static bool disk_replace_image_index(unsigned index, |
425 | const struct retro_game_info *info) |
426 | { |
427 | bool ret = true; |
428 | |
429 | if (index >= sizeof(disks) / sizeof(disks[0])) |
430 | return false; |
431 | |
432 | if (disks[index].fname != NULL) |
433 | free(disks[index].fname); |
434 | disks[index].fname = NULL; |
435 | |
436 | if (info != NULL) { |
437 | disks[index].fname = strdup(info->path); |
438 | if (index == disk_current_index) |
439 | ret = disk_set_image_index(index); |
440 | } |
441 | |
442 | return ret; |
443 | } |
444 | |
445 | static bool disk_add_image_index(void) |
446 | { |
447 | if (disk_count >= sizeof(disks) / sizeof(disks[0])) |
448 | return false; |
449 | |
450 | disk_count++; |
451 | return true; |
452 | } |
453 | |
454 | static struct retro_disk_control_callback disk_control = { |
455 | .set_eject_state = disk_set_eject_state, |
456 | .get_eject_state = disk_get_eject_state, |
457 | .get_image_index = disk_get_image_index, |
458 | .set_image_index = disk_set_image_index, |
459 | .get_num_images = disk_get_num_images, |
460 | .replace_image_index = disk_replace_image_index, |
461 | .add_image_index = disk_add_image_index, |
462 | }; |
463 | |
464 | static void disk_tray_open(void) |
465 | { |
466 | lprintf("cd tray open\n"); |
467 | disk_ejected = 1; |
468 | } |
469 | |
470 | static void disk_tray_close(void) |
471 | { |
472 | lprintf("cd tray close\n"); |
473 | disk_ejected = 0; |
474 | } |
475 | |
476 | |
477 | static const char * const biosfiles_us[] = { |
478 | "us_scd1_9210", "us_scd2_9306", "SegaCDBIOS9303", "bios_CD_U" |
479 | }; |
480 | static const char * const biosfiles_eu[] = { |
481 | "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303", "bios_CD_E" |
482 | }; |
483 | static const char * const biosfiles_jp[] = { |
484 | "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J" |
485 | }; |
486 | |
487 | static void make_system_path(char *buf, size_t buf_size, |
488 | const char *name, const char *ext) |
489 | { |
490 | const char *dir = NULL; |
491 | |
492 | if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) { |
493 | snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext); |
494 | } |
495 | else { |
496 | snprintf(buf, buf_size, "%s%s", name, ext); |
497 | } |
498 | } |
499 | |
500 | static const char *find_bios(int *region, const char *cd_fname) |
501 | { |
502 | const char * const *files; |
503 | static char path[256]; |
504 | int i, count; |
505 | FILE *f = NULL; |
506 | |
507 | if (*region == 4) { // US |
508 | files = biosfiles_us; |
509 | count = sizeof(biosfiles_us) / sizeof(char *); |
510 | } else if (*region == 8) { // EU |
511 | files = biosfiles_eu; |
512 | count = sizeof(biosfiles_eu) / sizeof(char *); |
513 | } else if (*region == 1 || *region == 2) { |
514 | files = biosfiles_jp; |
515 | count = sizeof(biosfiles_jp) / sizeof(char *); |
516 | } else { |
517 | return NULL; |
518 | } |
519 | |
520 | for (i = 0; i < count; i++) |
521 | { |
522 | make_system_path(path, sizeof(path), files[i], ".bin"); |
523 | f = fopen(path, "rb"); |
524 | if (f != NULL) |
525 | break; |
526 | |
527 | make_system_path(path, sizeof(path), files[i], ".zip"); |
528 | f = fopen(path, "rb"); |
529 | if (f != NULL) |
530 | break; |
531 | } |
532 | |
533 | if (f != NULL) { |
534 | lprintf("using bios: %s\n", path); |
535 | fclose(f); |
536 | return path; |
537 | } |
538 | |
539 | return NULL; |
540 | } |
541 | |
542 | bool retro_load_game(const struct retro_game_info *info) |
543 | { |
544 | enum media_type_e media_type; |
545 | static char carthw_path[256]; |
546 | size_t i; |
547 | |
548 | enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565; |
549 | if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { |
531a8f38 |
550 | lprintf("RGB565 support required, sorry\n"); |
2446536b |
551 | return false; |
552 | } |
553 | |
554 | if (info == NULL || info->path == NULL) { |
555 | lprintf("info->path required\n"); |
556 | return false; |
557 | } |
558 | |
559 | for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) { |
560 | if (disks[i].fname != NULL) { |
561 | free(disks[i].fname); |
562 | disks[i].fname = NULL; |
563 | } |
564 | } |
565 | |
566 | disk_current_index = 0; |
567 | disk_count = 1; |
568 | disks[0].fname = strdup(info->path); |
569 | |
570 | make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg"); |
571 | |
572 | media_type = PicoLoadMedia(info->path, carthw_path, |
573 | find_bios, NULL); |
574 | |
575 | switch (media_type) { |
576 | case PM_BAD_DETECT: |
577 | lprintf("Failed to detect ROM/CD image type.\n"); |
578 | return false; |
579 | case PM_BAD_CD: |
580 | lprintf("Invalid CD image\n"); |
581 | return false; |
582 | case PM_BAD_CD_NO_BIOS: |
583 | lprintf("Missing BIOS\n"); |
584 | return false; |
585 | case PM_ERROR: |
586 | lprintf("Load error\n"); |
587 | return false; |
588 | default: |
589 | break; |
590 | } |
591 | |
592 | PicoLoopPrepare(); |
593 | |
594 | PicoWriteSound = snd_write; |
595 | memset(sndBuffer, 0, sizeof(sndBuffer)); |
596 | PsndOut = sndBuffer; |
597 | PsndRerate(1); |
598 | |
599 | return true; |
600 | } |
601 | |
602 | bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info) |
603 | { |
604 | return false; |
605 | } |
606 | |
607 | void retro_unload_game(void) |
608 | { |
609 | } |
610 | |
611 | unsigned retro_get_region(void) |
612 | { |
613 | return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC; |
614 | } |
615 | |
616 | void *retro_get_memory_data(unsigned id) |
617 | { |
618 | if (id != RETRO_MEMORY_SAVE_RAM) |
619 | return NULL; |
620 | |
621 | if (PicoAHW & PAHW_MCD) |
622 | return Pico_mcd->bram; |
623 | else |
624 | return SRam.data; |
625 | } |
626 | |
627 | size_t retro_get_memory_size(unsigned id) |
628 | { |
629 | if (id != RETRO_MEMORY_SAVE_RAM) |
630 | return 0; |
631 | |
632 | if (PicoAHW & PAHW_MCD) |
633 | // bram |
634 | return 0x2000; |
635 | else |
636 | return SRam.size; |
637 | } |
638 | |
639 | void retro_reset(void) |
640 | { |
641 | PicoReset(); |
642 | } |
643 | |
644 | static const unsigned short retro_pico_map[] = { |
645 | [RETRO_DEVICE_ID_JOYPAD_B] = 1 << GBTN_B, |
646 | [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << GBTN_A, |
647 | [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << GBTN_MODE, |
648 | [RETRO_DEVICE_ID_JOYPAD_START] = 1 << GBTN_START, |
649 | [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << GBTN_UP, |
650 | [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << GBTN_DOWN, |
651 | [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << GBTN_LEFT, |
652 | [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << GBTN_RIGHT, |
653 | [RETRO_DEVICE_ID_JOYPAD_A] = 1 << GBTN_C, |
654 | [RETRO_DEVICE_ID_JOYPAD_X] = 1 << GBTN_Y, |
655 | [RETRO_DEVICE_ID_JOYPAD_L] = 1 << GBTN_X, |
656 | [RETRO_DEVICE_ID_JOYPAD_R] = 1 << GBTN_Z, |
657 | }; |
658 | #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0])) |
659 | |
660 | static void snd_write(int len) |
661 | { |
662 | audio_batch_cb(PsndOut, len / 4); |
663 | } |
664 | |
531a8f38 |
665 | static enum input_device input_name_to_val(const char *name) |
666 | { |
667 | if (strcmp(name, "3 button pad") == 0) |
668 | return PICO_INPUT_PAD_3BTN; |
669 | if (strcmp(name, "6 button pad") == 0) |
670 | return PICO_INPUT_PAD_6BTN; |
671 | if (strcmp(name, "None") == 0) |
672 | return PICO_INPUT_NOTHING; |
673 | |
674 | lprintf("invalid picodrive_input: '%s'\n", name); |
675 | return PICO_INPUT_PAD_3BTN; |
676 | } |
677 | |
678 | static void update_variables(void) |
679 | { |
680 | struct retro_variable var; |
681 | |
682 | var.value = NULL; |
683 | var.key = "picodrive_input1"; |
684 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) |
685 | PicoSetInputDevice(0, input_name_to_val(var.value)); |
686 | |
687 | var.value = NULL; |
688 | var.key = "picodrive_input2"; |
689 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) |
690 | PicoSetInputDevice(1, input_name_to_val(var.value)); |
691 | } |
692 | |
2446536b |
693 | void retro_run(void) |
694 | { |
695 | bool updated = false; |
696 | int pad, i; |
697 | |
698 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) |
531a8f38 |
699 | update_variables(); |
2446536b |
700 | |
701 | input_poll_cb(); |
702 | |
703 | PicoPad[0] = PicoPad[1] = 0; |
704 | for (pad = 0; pad < 2; pad++) |
705 | for (i = 0; i < RETRO_PICO_MAP_LEN; i++) |
706 | if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i)) |
707 | PicoPad[pad] |= retro_pico_map[i]; |
708 | |
709 | PicoFrame(); |
710 | |
711 | video_cb(vout_buf, vout_width, vout_height, vout_width * 2); |
712 | } |
713 | |
714 | void retro_init(void) |
715 | { |
716 | int level; |
717 | |
718 | #ifdef IOS |
719 | emu_log = fopen("/User/Documents/PicoDrive.log", "w"); |
720 | if (emu_log == NULL) |
721 | emu_log = fopen("PicoDrive.log", "w"); |
722 | if (emu_log == NULL) |
723 | #endif |
724 | emu_log = stdout; |
725 | |
726 | level = 0; |
727 | environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level); |
728 | |
729 | environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control); |
730 | |
731 | PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |
720bfc5d |
732 | | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX |
733 | | POPT_EN_32X|POPT_EN_PWM |
734 | | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER; |
735 | #ifdef __arm__ |
736 | PicoOpt |= POPT_EN_SVP_DRC; |
737 | #endif |
2446536b |
738 | PsndRate = 44100; |
739 | PicoAutoRgnOrder = 0x184; // US, EU, JP |
740 | PicoCDBuffers = 0; |
741 | |
2446536b |
742 | vout_width = 320; |
743 | vout_height = 240; |
744 | vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2); |
745 | |
746 | PicoInit(); |
41946d70 |
747 | PicoDrawSetOutFormat(PDF_RGB555, 0); |
2446536b |
748 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
749 | |
750 | //PicoMessage = plat_status_msg_busy_next; |
751 | PicoMCDopenTray = disk_tray_open; |
752 | PicoMCDcloseTray = disk_tray_close; |
531a8f38 |
753 | |
754 | update_variables(); |
2446536b |
755 | } |
756 | |
757 | void retro_deinit(void) |
758 | { |
759 | PicoExit(); |
760 | } |