7612bf90 |
1 | /* |
2 | * libretro core glue for PicoDrive |
3 | * (C) notaz, 2013 |
4 | * (C) aliaspider, 2016 |
5 | * (C) Daniel De Matteis, 2013 |
6 | * |
7 | * This work is licensed under the terms of MAME license. |
8 | * See COPYING file in the top-level directory. |
9 | */ |
10 | |
11 | #define _GNU_SOURCE 1 // mremap |
12 | #include <stdio.h> |
13 | #include <stdarg.h> |
14 | #include <string.h> |
15 | #ifndef _WIN32 |
16 | #ifndef NO_MMAP |
17 | #include <sys/mman.h> |
18 | #endif |
19 | #else |
20 | #include <io.h> |
21 | #include <windows.h> |
22 | #include <sys/types.h> |
23 | #endif |
24 | #include <errno.h> |
25 | #ifdef __MACH__ |
26 | #include <libkern/OSCacheControl.h> |
27 | #endif |
28 | |
29 | #ifdef _3DS |
30 | #include "3ds/3ds_utils.h" |
31 | #define MEMOP_MAP 4 |
32 | #define MEMOP_UNMAP 5 |
33 | #define MEMOP_PROT 6 |
34 | |
35 | int svcDuplicateHandle(unsigned int* out, unsigned int original); |
36 | int svcCloseHandle(unsigned int handle); |
37 | int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1, |
38 | unsigned int size, unsigned int type, unsigned int perm); |
39 | void* linearMemAlign(size_t size, size_t alignment); |
40 | void linearFree(void* mem); |
41 | |
42 | static int ctr_svchack_successful = 0; |
43 | |
44 | #elif defined(VITA) |
45 | #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes |
46 | |
47 | #include <psp2/kernel/sysmem.h> |
48 | static int sceBlock; |
49 | int getVMBlock(); |
50 | int _newlib_vm_size_user = 1 << TARGET_SIZE_2; |
51 | |
52 | #endif |
53 | |
54 | #include <pico/pico_int.h> |
55 | #include <pico/state.h> |
56 | #include <pico/patch.h> |
57 | #include "../common/input_pico.h" |
58 | #include "../common/version.h" |
59 | #include "libretro.h" |
60 | |
61 | static retro_log_printf_t log_cb; |
62 | static retro_video_refresh_t video_cb; |
63 | static retro_input_poll_t input_poll_cb; |
64 | static retro_input_state_t input_state_cb; |
65 | static retro_environment_t environ_cb; |
66 | static retro_audio_sample_batch_t audio_batch_cb; |
67 | |
68 | #define VOUT_MAX_WIDTH 320 |
69 | #define VOUT_MAX_HEIGHT 240 |
70 | |
71 | static const float VOUT_PAR = 0.0; |
72 | static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f)); |
73 | static const float VOUT_CRT = (224.0f * 1.29911f); |
74 | |
75 | bool show_overscan = false; |
76 | |
77 | static void *vout_buf; |
78 | static int vout_width, vout_height, vout_offset; |
79 | static float user_vout_width = 0.0; |
80 | |
81 | #ifdef _MSC_VER |
82 | static short sndBuffer[2*44100/50]; |
83 | #else |
84 | static short __attribute__((aligned(4))) sndBuffer[2*44100/50]; |
85 | #endif |
86 | |
87 | static void snd_write(int len); |
88 | |
89 | #ifdef _WIN32 |
90 | #define SLASH '\\' |
91 | #else |
92 | #define SLASH '/' |
93 | #endif |
94 | |
95 | /* functions called by the core */ |
96 | |
97 | void cache_flush_d_inval_i(void *start, void *end) |
98 | { |
99 | #ifdef __arm__ |
100 | size_t len = (char *)end - (char *)start; |
101 | #if defined(__BLACKBERRY_QNX__) |
102 | msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE); |
103 | #elif defined(__MACH__) |
104 | sys_dcache_flush(start, len); |
105 | sys_icache_invalidate(start, len); |
106 | #elif defined(_3DS) |
107 | ctr_flush_invalidate_cache(); |
108 | #elif defined(VITA) |
109 | sceKernelSyncVMDomain(sceBlock, start, len); |
110 | #else |
111 | __clear_cache(start, end); |
112 | #endif |
113 | #endif |
114 | } |
115 | |
116 | #ifdef _WIN32 |
117 | /* mmap() replacement for Windows |
118 | * |
119 | * Author: Mike Frysinger <vapier@gentoo.org> |
120 | * Placed into the public domain |
121 | */ |
122 | |
123 | /* References: |
124 | * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx |
125 | * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx |
126 | * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx |
127 | * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx |
128 | */ |
129 | |
130 | #define PROT_READ 0x1 |
131 | #define PROT_WRITE 0x2 |
132 | /* This flag is only available in WinXP+ */ |
133 | #ifdef FILE_MAP_EXECUTE |
134 | #define PROT_EXEC 0x4 |
135 | #else |
136 | #define PROT_EXEC 0x0 |
137 | #define FILE_MAP_EXECUTE 0 |
138 | #endif |
139 | |
140 | #define MAP_SHARED 0x01 |
141 | #define MAP_PRIVATE 0x02 |
142 | #define MAP_ANONYMOUS 0x20 |
143 | #define MAP_ANON MAP_ANONYMOUS |
144 | #define MAP_FAILED ((void *) -1) |
145 | |
146 | #ifdef __USE_FILE_OFFSET64 |
147 | # define DWORD_HI(x) (x >> 32) |
148 | # define DWORD_LO(x) ((x) & 0xffffffff) |
149 | #else |
150 | # define DWORD_HI(x) (0) |
151 | # define DWORD_LO(x) (x) |
152 | #endif |
153 | |
154 | static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset) |
155 | { |
156 | uint32_t flProtect, dwDesiredAccess; |
157 | off_t end; |
158 | HANDLE mmap_fd, h; |
159 | void *ret; |
160 | |
161 | if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC)) |
162 | return MAP_FAILED; |
163 | if (fd == -1) { |
164 | if (!(flags & MAP_ANON) || offset) |
165 | return MAP_FAILED; |
166 | } else if (flags & MAP_ANON) |
167 | return MAP_FAILED; |
168 | |
169 | if (prot & PROT_WRITE) { |
170 | if (prot & PROT_EXEC) |
171 | flProtect = PAGE_EXECUTE_READWRITE; |
172 | else |
173 | flProtect = PAGE_READWRITE; |
174 | } else if (prot & PROT_EXEC) { |
175 | if (prot & PROT_READ) |
176 | flProtect = PAGE_EXECUTE_READ; |
177 | else if (prot & PROT_EXEC) |
178 | flProtect = PAGE_EXECUTE; |
179 | } else |
180 | flProtect = PAGE_READONLY; |
181 | |
182 | end = length + offset; |
183 | |
184 | if (fd == -1) |
185 | mmap_fd = INVALID_HANDLE_VALUE; |
186 | else |
187 | mmap_fd = (HANDLE)_get_osfhandle(fd); |
188 | h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL); |
189 | if (h == NULL) |
190 | return MAP_FAILED; |
191 | |
192 | if (prot & PROT_WRITE) |
193 | dwDesiredAccess = FILE_MAP_WRITE; |
194 | else |
195 | dwDesiredAccess = FILE_MAP_READ; |
196 | if (prot & PROT_EXEC) |
197 | dwDesiredAccess |= FILE_MAP_EXECUTE; |
198 | if (flags & MAP_PRIVATE) |
199 | dwDesiredAccess |= FILE_MAP_COPY; |
200 | ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length); |
201 | if (ret == NULL) { |
202 | CloseHandle(h); |
203 | ret = MAP_FAILED; |
204 | } |
205 | return ret; |
206 | } |
207 | |
208 | static void munmap(void *addr, size_t length) |
209 | { |
210 | UnmapViewOfFile(addr); |
211 | /* ruh-ro, we leaked handle from CreateFileMapping() ... */ |
212 | } |
213 | #elif defined(NO_MMAP) |
214 | #define PROT_EXEC 0x04 |
215 | #define MAP_FAILED 0 |
216 | #define PROT_READ 0 |
217 | #define PROT_WRITE 0 |
218 | #define MAP_PRIVATE 0 |
219 | #define MAP_ANONYMOUS 0 |
220 | |
221 | void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off) |
222 | { |
223 | return malloc(len); |
224 | } |
225 | |
226 | void munmap(void *base_addr, size_t len) |
227 | { |
228 | free(base_addr); |
229 | } |
230 | |
231 | int mprotect(void *addr, size_t len, int prot) |
232 | { |
233 | /* stub - not really needed at this point since this codepath has no dynarecs */ |
234 | return 0; |
235 | } |
236 | |
237 | #endif |
238 | |
239 | #ifndef MAP_ANONYMOUS |
240 | #define MAP_ANONYMOUS MAP_ANON |
241 | #endif |
242 | |
243 | #ifdef _3DS |
244 | typedef struct |
245 | { |
246 | unsigned int requested_map; |
247 | void* buffer; |
248 | }pico_mmap_t; |
249 | |
250 | pico_mmap_t pico_mmaps[] = { |
251 | {0x02000000, 0}, |
252 | {0x06000000, 0}, |
253 | {NULL, 0} |
254 | }; |
255 | |
256 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) |
257 | { |
258 | (void)is_fixed; |
259 | |
260 | if (ctr_svchack_successful) |
261 | { |
262 | pico_mmap_t* pico_mmap; |
263 | |
264 | for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++) |
265 | { |
266 | if ((pico_mmap->requested_map == addr)) |
267 | { |
268 | unsigned int ptr_aligned, tmp; |
269 | unsigned int currentHandle; |
270 | unsigned int perm = 0b011; |
271 | |
272 | if (need_exec) |
273 | perm = 0b111; |
274 | |
275 | size = (size + 0xFFF) & ~0xFFF; |
276 | pico_mmap->buffer = malloc(size + 0x1000); |
277 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
278 | |
279 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
280 | |
281 | if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0) |
282 | { |
283 | if (log_cb) |
284 | log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map); |
285 | exit(1); |
286 | } |
287 | |
288 | svcCloseHandle(currentHandle); |
289 | return (void*)pico_mmap->requested_map; |
290 | } |
291 | } |
292 | } |
293 | |
294 | return malloc(size); |
295 | } |
296 | |
297 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
298 | { |
299 | if (ctr_svchack_successful) |
300 | { |
301 | pico_mmap_t* pico_mmap; |
302 | |
303 | for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++) |
304 | { |
305 | if ((pico_mmap->requested_map == (unsigned int)ptr)) |
306 | { |
307 | unsigned int ptr_aligned; |
308 | unsigned int currentHandle; |
309 | void* tmp; |
310 | |
311 | oldsize = (oldsize + 0xFFF) & ~0xFFF; |
312 | newsize = (newsize + 0xFFF) & ~0xFFF; |
313 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
314 | |
315 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
316 | |
317 | svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011); |
318 | |
319 | tmp = realloc(pico_mmap->buffer, newsize + 0x1000); |
320 | if(!tmp) |
321 | return NULL; |
322 | |
323 | pico_mmap->buffer = tmp; |
324 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
325 | |
326 | svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3); |
327 | |
328 | svcCloseHandle(currentHandle); |
329 | |
330 | return ptr; |
331 | } |
332 | } |
333 | } |
334 | |
335 | return realloc(ptr, newsize); |
336 | |
337 | } |
338 | void plat_munmap(void *ptr, size_t size) |
339 | { |
340 | if (ctr_svchack_successful) |
341 | { |
342 | pico_mmap_t* pico_mmap; |
343 | |
344 | for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++) |
345 | { |
346 | if ((pico_mmap->requested_map == (unsigned int)ptr)) |
347 | { |
348 | unsigned int ptr_aligned; |
349 | unsigned int currentHandle; |
350 | |
351 | size = (size + 0xFFF) & ~0xFFF; |
352 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
353 | |
354 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
355 | |
356 | svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011); |
357 | |
358 | svcCloseHandle(currentHandle); |
359 | |
360 | free(pico_mmap->buffer); |
361 | pico_mmap->buffer = NULL; |
362 | return; |
363 | } |
364 | } |
365 | } |
366 | |
367 | free(ptr); |
368 | } |
369 | |
370 | #else |
371 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) |
372 | { |
373 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; |
374 | void *req, *ret; |
375 | |
376 | req = (void *)addr; |
377 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); |
378 | if (ret == MAP_FAILED) { |
379 | if (log_cb) |
380 | log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno); |
381 | return NULL; |
382 | } |
383 | |
384 | if (addr != 0 && ret != (void *)addr) { |
385 | if (log_cb) |
386 | log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n", |
387 | addr, ret); |
388 | |
389 | if (is_fixed) { |
390 | munmap(ret, size); |
391 | return NULL; |
392 | } |
393 | } |
394 | |
395 | return ret; |
396 | } |
397 | |
398 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
399 | { |
400 | #ifdef __linux__ |
401 | void *ret = mremap(ptr, oldsize, newsize, 0); |
402 | if (ret == MAP_FAILED) |
403 | return NULL; |
404 | |
405 | return ret; |
406 | #else |
407 | void *tmp, *ret; |
408 | size_t preserve_size; |
409 | |
410 | preserve_size = oldsize; |
411 | if (preserve_size > newsize) |
412 | preserve_size = newsize; |
413 | tmp = malloc(preserve_size); |
414 | if (tmp == NULL) |
415 | return NULL; |
416 | memcpy(tmp, ptr, preserve_size); |
417 | |
418 | munmap(ptr, oldsize); |
419 | ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE, |
420 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
421 | if (ret == MAP_FAILED) { |
422 | free(tmp); |
423 | return NULL; |
424 | } |
425 | memcpy(ret, tmp, preserve_size); |
426 | free(tmp); |
427 | return ret; |
428 | #endif |
429 | } |
430 | |
431 | void plat_munmap(void *ptr, size_t size) |
432 | { |
433 | if (ptr != NULL) |
434 | munmap(ptr, size); |
435 | } |
436 | #endif |
437 | |
438 | int plat_mem_set_exec(void *ptr, size_t size) |
439 | { |
440 | #ifdef _WIN32 |
441 | int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0); |
442 | if (ret == 0 && log_cb) |
443 | log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, 0); |
444 | #elif defined(_3DS) |
445 | int ret = -1; |
446 | if (ctr_svchack_successful) |
447 | { |
448 | unsigned int currentHandle; |
449 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
450 | ret = svcControlProcessMemory(currentHandle, ptr, 0x0, |
451 | size, MEMOP_PROT, 0b111); |
452 | svcCloseHandle(currentHandle); |
453 | ctr_flush_invalidate_cache(); |
454 | |
455 | } |
456 | else |
457 | { |
458 | if (log_cb) |
459 | log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n"); |
460 | exit(1); |
461 | } |
462 | |
463 | #elif defined(VITA) |
464 | int ret = sceKernelOpenVMDomain(); |
465 | #else |
466 | int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC); |
467 | if (ret != 0 && log_cb) |
468 | log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno); |
469 | #endif |
470 | return ret; |
471 | } |
472 | |
473 | void emu_video_mode_change(int start_line, int line_count, int is_32cols) |
474 | { |
475 | memset(vout_buf, 0, 320 * 240 * 2); |
476 | vout_width = is_32cols ? 256 : 320; |
477 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
478 | if (show_overscan == true) line_count += 16; |
479 | if (show_overscan == true) start_line -= 8; |
480 | |
481 | vout_height = line_count; |
482 | vout_offset = vout_width * start_line; |
483 | |
484 | // Update the geometry |
485 | struct retro_system_av_info av_info; |
486 | retro_get_system_av_info(&av_info); |
487 | environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info); |
488 | } |
489 | |
490 | void emu_32x_startup(void) |
491 | { |
492 | } |
493 | |
494 | void lprintf(const char *fmt, ...) |
495 | { |
496 | char buffer[256]; |
497 | va_list ap; |
498 | va_start(ap, fmt); |
499 | vsprintf(buffer, fmt, ap); |
500 | /* TODO - add 'level' param for warning/error messages? */ |
501 | if (log_cb) |
502 | log_cb(RETRO_LOG_INFO, "%s", buffer); |
503 | va_end(ap); |
504 | } |
505 | |
506 | /* libretro */ |
507 | void retro_set_environment(retro_environment_t cb) |
508 | { |
509 | static const struct retro_variable vars[] = { |
510 | { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" }, |
511 | { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" }, |
512 | { "picodrive_sprlim", "No sprite limit; disabled|enabled" }, |
513 | { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" }, |
514 | { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" }, |
7612bf90 |
515 | { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" }, |
516 | { "picodrive_overscan", "Show Overscan; disabled|enabled" }, |
517 | #ifdef DRC_SH2 |
518 | { "picodrive_drc", "Dynamic recompilers; enabled|disabled" }, |
519 | #endif |
520 | { NULL, NULL }, |
521 | }; |
522 | |
523 | environ_cb = cb; |
524 | |
525 | cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars); |
526 | } |
527 | |
528 | void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; } |
529 | void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; } |
530 | void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; } |
531 | void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; } |
532 | void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; } |
533 | |
534 | unsigned retro_api_version(void) |
535 | { |
536 | return RETRO_API_VERSION; |
537 | } |
538 | |
539 | void retro_set_controller_port_device(unsigned port, unsigned device) |
540 | { |
541 | } |
542 | |
543 | void retro_get_system_info(struct retro_system_info *info) |
544 | { |
545 | memset(info, 0, sizeof(*info)); |
546 | info->library_name = "PicoDrive"; |
547 | #ifndef GIT_VERSION |
548 | #define GIT_VERSION "" |
549 | #endif |
550 | info->library_version = VERSION GIT_VERSION; |
551 | info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms"; |
552 | info->need_fullpath = true; |
553 | } |
554 | |
555 | void retro_get_system_av_info(struct retro_system_av_info *info) |
556 | { |
557 | memset(info, 0, sizeof(*info)); |
558 | info->timing.fps = Pico.m.pal ? 50 : 60; |
559 | info->timing.sample_rate = 44100; |
560 | info->geometry.base_width = vout_width; |
561 | info->geometry.base_height = vout_height; |
562 | info->geometry.max_width = vout_width; |
563 | info->geometry.max_height = vout_height; |
564 | |
565 | float common_width = vout_width; |
566 | if (user_vout_width != 0) |
567 | common_width = user_vout_width; |
568 | |
569 | info->geometry.aspect_ratio = common_width / vout_height; |
570 | } |
571 | |
572 | /* savestates */ |
573 | struct savestate_state { |
574 | const char *load_buf; |
575 | char *save_buf; |
576 | size_t size; |
577 | size_t pos; |
578 | }; |
579 | |
580 | size_t state_read(void *p, size_t size, size_t nmemb, void *file) |
581 | { |
582 | struct savestate_state *state = file; |
583 | size_t bsize = size * nmemb; |
584 | |
585 | if (state->pos + bsize > state->size) { |
586 | if (log_cb) |
587 | log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n", |
588 | state->pos + bsize, state->size); |
589 | bsize = state->size - state->pos; |
590 | if ((int)bsize <= 0) |
591 | return 0; |
592 | } |
593 | |
594 | memcpy(p, state->load_buf + state->pos, bsize); |
595 | state->pos += bsize; |
596 | return bsize; |
597 | } |
598 | |
599 | size_t state_write(void *p, size_t size, size_t nmemb, void *file) |
600 | { |
601 | struct savestate_state *state = file; |
602 | size_t bsize = size * nmemb; |
603 | |
604 | if (state->pos + bsize > state->size) { |
605 | if (log_cb) |
606 | log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n", |
607 | state->pos + bsize, state->size); |
608 | bsize = state->size - state->pos; |
609 | if ((int)bsize <= 0) |
610 | return 0; |
611 | } |
612 | |
613 | memcpy(state->save_buf + state->pos, p, bsize); |
614 | state->pos += bsize; |
615 | return bsize; |
616 | } |
617 | |
618 | size_t state_skip(void *p, size_t size, size_t nmemb, void *file) |
619 | { |
620 | struct savestate_state *state = file; |
621 | size_t bsize = size * nmemb; |
622 | |
623 | state->pos += bsize; |
624 | return bsize; |
625 | } |
626 | |
627 | size_t state_eof(void *file) |
628 | { |
629 | struct savestate_state *state = file; |
630 | |
631 | return state->pos >= state->size; |
632 | } |
633 | |
634 | int state_fseek(void *file, long offset, int whence) |
635 | { |
636 | struct savestate_state *state = file; |
637 | |
638 | switch (whence) { |
639 | case SEEK_SET: |
640 | state->pos = offset; |
641 | break; |
642 | case SEEK_CUR: |
643 | state->pos += offset; |
644 | break; |
645 | case SEEK_END: |
646 | state->pos = state->size + offset; |
647 | break; |
648 | } |
649 | return (int)state->pos; |
650 | } |
651 | |
652 | /* savestate sizes vary wildly depending if cd/32x or |
653 | * carthw is active, so run the whole thing to get size */ |
654 | size_t retro_serialize_size(void) |
655 | { |
656 | struct savestate_state state = { 0, }; |
657 | int ret; |
658 | |
659 | ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek); |
660 | if (ret != 0) |
661 | return 0; |
662 | |
663 | return state.pos; |
664 | } |
665 | |
666 | bool retro_serialize(void *data, size_t size) |
667 | { |
668 | struct savestate_state state = { 0, }; |
669 | int ret; |
670 | |
671 | state.save_buf = data; |
672 | state.size = size; |
673 | state.pos = 0; |
674 | |
675 | ret = PicoStateFP(&state, 1, NULL, state_write, |
676 | NULL, state_fseek); |
677 | return ret == 0; |
678 | } |
679 | |
680 | bool retro_unserialize(const void *data, size_t size) |
681 | { |
682 | struct savestate_state state = { 0, }; |
683 | int ret; |
684 | |
685 | state.load_buf = data; |
686 | state.size = size; |
687 | state.pos = 0; |
688 | |
689 | ret = PicoStateFP(&state, 0, state_read, NULL, |
690 | state_eof, state_fseek); |
691 | return ret == 0; |
692 | } |
693 | |
694 | typedef struct patch |
695 | { |
696 | unsigned int addr; |
697 | unsigned short data; |
698 | unsigned char comp; |
699 | } patch; |
700 | |
701 | extern void decode(char *buff, patch *dest); |
702 | extern uint16_t m68k_read16(uint32_t a); |
703 | extern void m68k_write16(uint32_t a, uint16_t d); |
704 | |
705 | void retro_cheat_reset(void) |
706 | { |
707 | int i=0; |
708 | unsigned int addr; |
709 | |
710 | for (i = 0; i < PicoPatchCount; i++) |
711 | { |
712 | addr = PicoPatches[i].addr; |
713 | if (addr < Pico.romsize) { |
714 | if (PicoPatches[i].active) |
715 | *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old; |
716 | } else { |
717 | if (PicoPatches[i].active) |
718 | m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old); |
719 | } |
720 | } |
721 | |
722 | PicoPatchUnload(); |
723 | } |
724 | |
725 | void retro_cheat_set(unsigned index, bool enabled, const char *code) |
726 | { |
727 | patch pt; |
728 | int array_len = PicoPatchCount; |
729 | char codeCopy[256]; |
730 | char *buff; |
731 | |
732 | if (code=='\0') return; |
733 | strcpy(codeCopy,code); |
734 | buff = strtok(codeCopy,"+"); |
735 | |
736 | while (buff != NULL) |
737 | { |
738 | decode(buff, &pt); |
739 | if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1) |
740 | { |
741 | log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff); |
742 | return; |
743 | } |
744 | |
745 | /* code was good, add it */ |
746 | if (array_len < PicoPatchCount + 1) |
747 | { |
748 | void *ptr; |
749 | array_len *= 2; |
750 | array_len++; |
751 | ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0])); |
752 | if (ptr == NULL) { |
753 | log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff); |
754 | return; |
755 | } |
756 | PicoPatches = ptr; |
757 | } |
758 | strcpy(PicoPatches[PicoPatchCount].code, buff); |
759 | |
760 | PicoPatches[PicoPatchCount].active = enabled; |
761 | PicoPatches[PicoPatchCount].addr = pt.addr; |
762 | PicoPatches[PicoPatchCount].data = pt.data; |
763 | PicoPatches[PicoPatchCount].comp = pt.comp; |
764 | if (PicoPatches[PicoPatchCount].addr < Pico.romsize) |
765 | PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr); |
766 | else |
767 | PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr); |
768 | PicoPatchCount++; |
769 | |
770 | buff = strtok(NULL,"+"); |
771 | } |
772 | } |
773 | |
774 | /* multidisk support */ |
775 | static bool disk_ejected; |
776 | static unsigned int disk_current_index; |
777 | static unsigned int disk_count; |
778 | static struct disks_state { |
779 | char *fname; |
780 | } disks[8]; |
781 | |
782 | static bool disk_set_eject_state(bool ejected) |
783 | { |
784 | // TODO? |
785 | disk_ejected = ejected; |
786 | return true; |
787 | } |
788 | |
789 | static bool disk_get_eject_state(void) |
790 | { |
791 | return disk_ejected; |
792 | } |
793 | |
794 | static unsigned int disk_get_image_index(void) |
795 | { |
796 | return disk_current_index; |
797 | } |
798 | |
799 | static bool disk_set_image_index(unsigned int index) |
800 | { |
801 | enum cd_img_type cd_type; |
802 | int ret; |
803 | |
804 | if (index >= sizeof(disks) / sizeof(disks[0])) |
805 | return false; |
806 | |
807 | if (disks[index].fname == NULL) { |
808 | if (log_cb) |
809 | log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index); |
810 | |
811 | // RetroArch specifies "no disk" with index == count, |
812 | // so don't fail here.. |
813 | disk_current_index = index; |
814 | return true; |
815 | } |
816 | |
817 | if (log_cb) |
818 | log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index, |
819 | disks[index].fname); |
820 | |
821 | ret = -1; |
822 | cd_type = PicoCdCheck(disks[index].fname, NULL); |
823 | if (cd_type != CIT_NOT_CD) |
824 | ret = cdd_load(disks[index].fname, cd_type); |
825 | if (ret != 0) { |
826 | if (log_cb) |
827 | log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n"); |
828 | return 0; |
829 | } |
830 | |
831 | disk_current_index = index; |
832 | return true; |
833 | } |
834 | |
835 | static unsigned int disk_get_num_images(void) |
836 | { |
837 | return disk_count; |
838 | } |
839 | |
840 | static bool disk_replace_image_index(unsigned index, |
841 | const struct retro_game_info *info) |
842 | { |
843 | bool ret = true; |
844 | |
845 | if (index >= sizeof(disks) / sizeof(disks[0])) |
846 | return false; |
847 | |
848 | if (disks[index].fname != NULL) |
849 | free(disks[index].fname); |
850 | disks[index].fname = NULL; |
851 | |
852 | if (info != NULL) { |
853 | disks[index].fname = strdup(info->path); |
854 | if (index == disk_current_index) |
855 | ret = disk_set_image_index(index); |
856 | } |
857 | |
858 | return ret; |
859 | } |
860 | |
861 | static bool disk_add_image_index(void) |
862 | { |
863 | if (disk_count >= sizeof(disks) / sizeof(disks[0])) |
864 | return false; |
865 | |
866 | disk_count++; |
867 | return true; |
868 | } |
869 | |
870 | static struct retro_disk_control_callback disk_control = { |
871 | disk_set_eject_state, |
872 | disk_get_eject_state, |
873 | disk_get_image_index, |
874 | disk_set_image_index, |
875 | disk_get_num_images, |
876 | disk_replace_image_index, |
877 | disk_add_image_index, |
878 | }; |
879 | |
880 | static void disk_tray_open(void) |
881 | { |
882 | if (log_cb) |
883 | log_cb(RETRO_LOG_INFO, "cd tray open\n"); |
884 | disk_ejected = 1; |
885 | } |
886 | |
887 | static void disk_tray_close(void) |
888 | { |
889 | if (log_cb) |
890 | log_cb(RETRO_LOG_INFO, "cd tray close\n"); |
891 | disk_ejected = 0; |
892 | } |
893 | |
894 | |
895 | static const char * const biosfiles_us[] = { |
896 | "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U" |
897 | }; |
898 | static const char * const biosfiles_eu[] = { |
899 | "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E" |
900 | }; |
901 | static const char * const biosfiles_jp[] = { |
902 | "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J" |
903 | }; |
904 | |
905 | static void make_system_path(char *buf, size_t buf_size, |
906 | const char *name, const char *ext) |
907 | { |
908 | const char *dir = NULL; |
909 | |
910 | if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) { |
911 | snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext); |
912 | } |
913 | else { |
914 | snprintf(buf, buf_size, "%s%s", name, ext); |
915 | } |
916 | } |
917 | |
918 | static const char *find_bios(int *region, const char *cd_fname) |
919 | { |
920 | const char * const *files; |
921 | static char path[256]; |
922 | int i, count; |
923 | FILE *f = NULL; |
924 | |
925 | if (*region == 4) { // US |
926 | files = biosfiles_us; |
927 | count = sizeof(biosfiles_us) / sizeof(char *); |
928 | } else if (*region == 8) { // EU |
929 | files = biosfiles_eu; |
930 | count = sizeof(biosfiles_eu) / sizeof(char *); |
931 | } else if (*region == 1 || *region == 2) { |
932 | files = biosfiles_jp; |
933 | count = sizeof(biosfiles_jp) / sizeof(char *); |
934 | } else { |
935 | return NULL; |
936 | } |
937 | |
938 | for (i = 0; i < count; i++) |
939 | { |
940 | make_system_path(path, sizeof(path), files[i], ".bin"); |
941 | f = fopen(path, "rb"); |
942 | if (f != NULL) |
943 | break; |
944 | |
945 | make_system_path(path, sizeof(path), files[i], ".zip"); |
946 | f = fopen(path, "rb"); |
947 | if (f != NULL) |
948 | break; |
949 | } |
950 | |
951 | if (f != NULL) { |
952 | if (log_cb) |
953 | log_cb(RETRO_LOG_INFO, "using bios: %s\n", path); |
954 | fclose(f); |
955 | return path; |
956 | } |
957 | |
958 | return NULL; |
959 | } |
960 | |
7612bf90 |
961 | bool retro_load_game(const struct retro_game_info *info) |
962 | { |
963 | enum media_type_e media_type; |
964 | static char carthw_path[256]; |
965 | size_t i; |
966 | |
967 | struct retro_input_descriptor desc[] = { |
968 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
969 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
970 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
971 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
972 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, |
973 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, |
974 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, |
975 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, |
976 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, |
977 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, |
978 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" }, |
979 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, |
980 | |
981 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
982 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
983 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
984 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
985 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, |
986 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, |
987 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, |
988 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, |
989 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, |
990 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, |
991 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" }, |
992 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, |
993 | |
994 | { 0 }, |
995 | }; |
996 | |
997 | struct retro_input_descriptor desc_sms[] = { |
998 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
999 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
1000 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
1001 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
1002 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" }, |
1003 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" }, |
1004 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" }, |
1005 | |
1006 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
1007 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
1008 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
1009 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
1010 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" }, |
1011 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" }, |
1012 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" }, |
1013 | |
1014 | { 0 }, |
1015 | }; |
1016 | |
7612bf90 |
1017 | enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565; |
1018 | if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { |
1019 | if (log_cb) |
1020 | log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n"); |
1021 | return false; |
1022 | } |
1023 | |
1024 | if (info == NULL || info->path == NULL) { |
1025 | if (log_cb) |
1026 | log_cb(RETRO_LOG_ERROR, "info->path required\n"); |
1027 | return false; |
1028 | } |
1029 | |
1030 | for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) { |
1031 | if (disks[i].fname != NULL) { |
1032 | free(disks[i].fname); |
1033 | disks[i].fname = NULL; |
1034 | } |
1035 | } |
1036 | |
1037 | disk_current_index = 0; |
1038 | disk_count = 1; |
1039 | disks[0].fname = strdup(info->path); |
1040 | |
1041 | make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg"); |
1042 | |
1043 | media_type = PicoLoadMedia(info->path, carthw_path, |
1044 | find_bios, NULL); |
1045 | |
1046 | switch (media_type) { |
1047 | case PM_BAD_DETECT: |
1048 | if (log_cb) |
1049 | log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n"); |
1050 | return false; |
1051 | case PM_BAD_CD: |
1052 | if (log_cb) |
1053 | log_cb(RETRO_LOG_ERROR, "Invalid CD image\n"); |
1054 | return false; |
1055 | case PM_BAD_CD_NO_BIOS: |
1056 | if (log_cb) |
1057 | log_cb(RETRO_LOG_ERROR, "Missing BIOS\n"); |
1058 | return false; |
1059 | case PM_ERROR: |
1060 | if (log_cb) |
1061 | log_cb(RETRO_LOG_ERROR, "Load error\n"); |
1062 | return false; |
1063 | default: |
1064 | break; |
1065 | } |
1066 | |
1067 | if (media_type == PM_MARK3) |
1068 | environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms); |
1069 | else |
1070 | environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc); |
1071 | |
1072 | PicoLoopPrepare(); |
1073 | |
1074 | PicoWriteSound = snd_write; |
1075 | memset(sndBuffer, 0, sizeof(sndBuffer)); |
1076 | PsndOut = sndBuffer; |
1077 | PsndRerate(0); |
1078 | |
1079 | return true; |
1080 | } |
1081 | |
1082 | bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info) |
1083 | { |
1084 | return false; |
1085 | } |
1086 | |
1087 | void retro_unload_game(void) |
1088 | { |
1089 | } |
1090 | |
1091 | unsigned retro_get_region(void) |
1092 | { |
1093 | return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC; |
1094 | } |
1095 | |
1096 | void *retro_get_memory_data(unsigned type) |
1097 | { |
1098 | uint8_t* data; |
1099 | |
1100 | switch(type) |
1101 | { |
1102 | case RETRO_MEMORY_SAVE_RAM: |
1103 | if (PicoAHW & PAHW_MCD) |
1104 | data = Pico_mcd->bram; |
1105 | else |
28a5b392 |
1106 | data = Pico.sv.data; |
7612bf90 |
1107 | break; |
1108 | case RETRO_MEMORY_SYSTEM_RAM: |
1109 | if (PicoAHW & PAHW_SMS) |
28a5b392 |
1110 | data = PicoMem.zram; |
7612bf90 |
1111 | else |
28a5b392 |
1112 | data = PicoMem.ram; |
7612bf90 |
1113 | break; |
1114 | default: |
1115 | data = NULL; |
1116 | break; |
1117 | } |
1118 | |
1119 | return data; |
1120 | } |
1121 | |
1122 | size_t retro_get_memory_size(unsigned type) |
1123 | { |
1124 | unsigned int i; |
1125 | int sum; |
1126 | |
1127 | switch(type) |
1128 | { |
1129 | case RETRO_MEMORY_SAVE_RAM: |
1130 | if (PicoAHW & PAHW_MCD) |
1131 | // bram |
1132 | return 0x2000; |
1133 | |
1134 | if (Pico.m.frame_count == 0) |
28a5b392 |
1135 | return Pico.sv.size; |
7612bf90 |
1136 | |
1137 | // if game doesn't write to sram, don't report it to |
1138 | // libretro so that RA doesn't write out zeroed .srm |
28a5b392 |
1139 | for (i = 0, sum = 0; i < Pico.sv.size; i++) |
1140 | sum |= Pico.sv.data[i]; |
7612bf90 |
1141 | |
28a5b392 |
1142 | return (sum != 0) ? Pico.sv.size : 0; |
7612bf90 |
1143 | |
1144 | case RETRO_MEMORY_SYSTEM_RAM: |
1145 | if (PicoAHW & PAHW_SMS) |
1146 | return 0x2000; |
1147 | else |
28a5b392 |
1148 | return sizeof(PicoMem.ram); |
7612bf90 |
1149 | |
1150 | default: |
1151 | return 0; |
1152 | } |
1153 | |
1154 | } |
1155 | |
1156 | void retro_reset(void) |
1157 | { |
1158 | PicoReset(); |
1159 | } |
1160 | |
1161 | static const unsigned short retro_pico_map[] = { |
1162 | 1 << GBTN_B, |
1163 | 1 << GBTN_A, |
1164 | 1 << GBTN_MODE, |
1165 | 1 << GBTN_START, |
1166 | 1 << GBTN_UP, |
1167 | 1 << GBTN_DOWN, |
1168 | 1 << GBTN_LEFT, |
1169 | 1 << GBTN_RIGHT, |
1170 | 1 << GBTN_C, |
1171 | 1 << GBTN_Y, |
1172 | 1 << GBTN_X, |
1173 | 1 << GBTN_Z, |
1174 | }; |
1175 | #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0])) |
1176 | |
1177 | static void snd_write(int len) |
1178 | { |
1179 | audio_batch_cb(PsndOut, len / 4); |
1180 | } |
1181 | |
1182 | static enum input_device input_name_to_val(const char *name) |
1183 | { |
1184 | if (strcmp(name, "3 button pad") == 0) |
1185 | return PICO_INPUT_PAD_3BTN; |
1186 | if (strcmp(name, "6 button pad") == 0) |
1187 | return PICO_INPUT_PAD_6BTN; |
1188 | if (strcmp(name, "None") == 0) |
1189 | return PICO_INPUT_NOTHING; |
1190 | |
1191 | if (log_cb) |
1192 | log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name); |
1193 | return PICO_INPUT_PAD_3BTN; |
1194 | } |
1195 | |
1196 | static void update_variables(void) |
1197 | { |
1198 | struct retro_variable var; |
1199 | |
1200 | var.value = NULL; |
1201 | var.key = "picodrive_input1"; |
1202 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) |
1203 | PicoSetInputDevice(0, input_name_to_val(var.value)); |
1204 | |
1205 | var.value = NULL; |
1206 | var.key = "picodrive_input2"; |
1207 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) |
1208 | PicoSetInputDevice(1, input_name_to_val(var.value)); |
1209 | |
1210 | var.value = NULL; |
1211 | var.key = "picodrive_sprlim"; |
1212 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1213 | if (strcmp(var.value, "enabled") == 0) |
1214 | PicoOpt |= POPT_DIS_SPRITE_LIM; |
1215 | else |
1216 | PicoOpt &= ~POPT_DIS_SPRITE_LIM; |
1217 | } |
1218 | |
1219 | var.value = NULL; |
1220 | var.key = "picodrive_ramcart"; |
1221 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1222 | if (strcmp(var.value, "enabled") == 0) |
1223 | PicoOpt |= POPT_EN_MCD_RAMCART; |
1224 | else |
1225 | PicoOpt &= ~POPT_EN_MCD_RAMCART; |
1226 | } |
1227 | |
1228 | int OldPicoRegionOverride = PicoRegionOverride; |
1229 | var.value = NULL; |
1230 | var.key = "picodrive_region"; |
1231 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1232 | if (strcmp(var.value, "Auto") == 0) |
1233 | PicoRegionOverride = 0; |
1234 | else if (strcmp(var.value, "Japan NTSC") == 0) |
1235 | PicoRegionOverride = 1; |
1236 | else if (strcmp(var.value, "Japan PAL") == 0) |
1237 | PicoRegionOverride = 2; |
1238 | else if (strcmp(var.value, "US") == 0) |
1239 | PicoRegionOverride = 4; |
1240 | else if (strcmp(var.value, "Europe") == 0) |
1241 | PicoRegionOverride = 8; |
1242 | } |
1243 | |
7612bf90 |
1244 | // Update region, fps and sound flags if needed |
28a5b392 |
1245 | if (Pico.rom && PicoRegionOverride != OldPicoRegionOverride) |
7612bf90 |
1246 | { |
1247 | PicoDetectRegion(); |
1248 | PicoLoopPrepare(); |
1249 | PsndRerate(1); |
1250 | } |
1251 | |
1252 | float old_user_vout_width = user_vout_width; |
1253 | var.value = NULL; |
1254 | var.key = "picodrive_aspect"; |
1255 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1256 | if (strcmp(var.value, "4/3") == 0) |
1257 | user_vout_width = VOUT_4_3; |
1258 | else if (strcmp(var.value, "CRT") == 0) |
1259 | user_vout_width = VOUT_CRT; |
1260 | else |
1261 | user_vout_width = VOUT_PAR; |
1262 | } |
1263 | |
1264 | var.value = NULL; |
1265 | var.key = "picodrive_overscan"; |
1266 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1267 | if (strcmp(var.value, "enabled") == 0) |
1268 | show_overscan = true; |
1269 | else |
1270 | show_overscan = false; |
1271 | } |
1272 | |
1273 | if (user_vout_width != old_user_vout_width) |
1274 | { |
1275 | // Update the geometry |
1276 | struct retro_system_av_info av_info; |
1277 | retro_get_system_av_info(&av_info); |
1278 | environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info); |
1279 | } |
1280 | |
1281 | #ifdef DRC_SH2 |
1282 | var.value = NULL; |
1283 | var.key = "picodrive_drc"; |
1284 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1285 | if (strcmp(var.value, "enabled") == 0) |
1286 | PicoOpt |= POPT_EN_DRC; |
1287 | else |
1288 | PicoOpt &= ~POPT_EN_DRC; |
1289 | } |
1290 | #endif |
1291 | #ifdef _3DS |
1292 | if(!ctr_svchack_successful) |
1293 | PicoOpt &= ~POPT_EN_DRC; |
1294 | #endif |
1295 | } |
1296 | |
1297 | void retro_run(void) |
1298 | { |
1299 | bool updated = false; |
1300 | int pad, i; |
1301 | |
1302 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) |
1303 | update_variables(); |
1304 | |
1305 | input_poll_cb(); |
1306 | |
1307 | PicoPad[0] = PicoPad[1] = 0; |
1308 | for (pad = 0; pad < 2; pad++) |
1309 | for (i = 0; i < RETRO_PICO_MAP_LEN; i++) |
1310 | if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i)) |
1311 | PicoPad[pad] |= retro_pico_map[i]; |
1312 | |
1313 | PicoPatchApply(); |
1314 | PicoFrame(); |
1315 | |
1316 | video_cb((short *)vout_buf + vout_offset, |
1317 | vout_width, vout_height, vout_width * 2); |
1318 | } |
1319 | |
7612bf90 |
1320 | void retro_init(void) |
1321 | { |
1322 | struct retro_log_callback log; |
1323 | int level; |
1324 | |
1325 | level = 0; |
1326 | environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level); |
1327 | |
1328 | if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log)) |
1329 | log_cb = log.log; |
1330 | else |
1331 | log_cb = NULL; |
1332 | |
1333 | environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control); |
1334 | |
1335 | #ifdef _3DS |
1336 | ctr_svchack_successful = ctr_svchack_init(); |
1337 | #elif defined(VITA) |
1338 | sceBlock = getVMBlock(); |
1339 | #endif |
1340 | |
1341 | PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |
1342 | | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX |
1343 | | POPT_EN_32X|POPT_EN_PWM |
1344 | | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER; |
1345 | #ifdef __arm__ |
1346 | #ifdef _3DS |
1347 | if (ctr_svchack_successful) |
1348 | #endif |
1349 | PicoOpt |= POPT_EN_DRC; |
1350 | #endif |
1351 | PsndRate = 44100; |
1352 | PicoAutoRgnOrder = 0x184; // US, EU, JP |
1353 | |
1354 | vout_width = 320; |
1355 | vout_height = 240; |
1356 | #ifdef _3DS |
1357 | vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80); |
1358 | #else |
1359 | vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2); |
1360 | #endif |
1361 | |
1362 | PicoInit(); |
1363 | PicoDrawSetOutFormat(PDF_RGB555, 0); |
1364 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
1365 | |
1366 | //PicoMessage = plat_status_msg_busy_next; |
1367 | PicoMCDopenTray = disk_tray_open; |
1368 | PicoMCDcloseTray = disk_tray_close; |
1369 | |
1370 | update_variables(); |
1371 | } |
1372 | |
1373 | void retro_deinit(void) |
1374 | { |
1375 | #ifdef _3DS |
1376 | linearFree(vout_buf); |
1377 | #else |
1378 | free(vout_buf); |
1379 | #endif |
1380 | vout_buf = NULL; |
1381 | PicoExit(); |
1382 | } |