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; |
df925153 |
101 | (void)len; |
7612bf90 |
102 | #if defined(__BLACKBERRY_QNX__) |
103 | msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE); |
104 | #elif defined(__MACH__) |
105 | sys_dcache_flush(start, len); |
106 | sys_icache_invalidate(start, len); |
107 | #elif defined(_3DS) |
108 | ctr_flush_invalidate_cache(); |
109 | #elif defined(VITA) |
110 | sceKernelSyncVMDomain(sceBlock, start, len); |
111 | #else |
112 | __clear_cache(start, end); |
113 | #endif |
114 | #endif |
115 | } |
116 | |
117 | #ifdef _WIN32 |
118 | /* mmap() replacement for Windows |
119 | * |
120 | * Author: Mike Frysinger <vapier@gentoo.org> |
121 | * Placed into the public domain |
122 | */ |
123 | |
124 | /* References: |
125 | * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx |
126 | * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx |
127 | * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx |
128 | * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx |
129 | */ |
130 | |
131 | #define PROT_READ 0x1 |
132 | #define PROT_WRITE 0x2 |
133 | /* This flag is only available in WinXP+ */ |
134 | #ifdef FILE_MAP_EXECUTE |
135 | #define PROT_EXEC 0x4 |
136 | #else |
137 | #define PROT_EXEC 0x0 |
138 | #define FILE_MAP_EXECUTE 0 |
139 | #endif |
140 | |
141 | #define MAP_SHARED 0x01 |
142 | #define MAP_PRIVATE 0x02 |
143 | #define MAP_ANONYMOUS 0x20 |
144 | #define MAP_ANON MAP_ANONYMOUS |
145 | #define MAP_FAILED ((void *) -1) |
146 | |
147 | #ifdef __USE_FILE_OFFSET64 |
148 | # define DWORD_HI(x) (x >> 32) |
149 | # define DWORD_LO(x) ((x) & 0xffffffff) |
150 | #else |
151 | # define DWORD_HI(x) (0) |
152 | # define DWORD_LO(x) (x) |
153 | #endif |
154 | |
155 | static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset) |
156 | { |
157 | uint32_t flProtect, dwDesiredAccess; |
158 | off_t end; |
159 | HANDLE mmap_fd, h; |
160 | void *ret; |
161 | |
162 | if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC)) |
163 | return MAP_FAILED; |
164 | if (fd == -1) { |
165 | if (!(flags & MAP_ANON) || offset) |
166 | return MAP_FAILED; |
167 | } else if (flags & MAP_ANON) |
168 | return MAP_FAILED; |
169 | |
170 | if (prot & PROT_WRITE) { |
171 | if (prot & PROT_EXEC) |
172 | flProtect = PAGE_EXECUTE_READWRITE; |
173 | else |
174 | flProtect = PAGE_READWRITE; |
175 | } else if (prot & PROT_EXEC) { |
176 | if (prot & PROT_READ) |
177 | flProtect = PAGE_EXECUTE_READ; |
178 | else if (prot & PROT_EXEC) |
179 | flProtect = PAGE_EXECUTE; |
180 | } else |
181 | flProtect = PAGE_READONLY; |
182 | |
183 | end = length + offset; |
184 | |
185 | if (fd == -1) |
186 | mmap_fd = INVALID_HANDLE_VALUE; |
187 | else |
188 | mmap_fd = (HANDLE)_get_osfhandle(fd); |
189 | h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL); |
190 | if (h == NULL) |
191 | return MAP_FAILED; |
192 | |
193 | if (prot & PROT_WRITE) |
194 | dwDesiredAccess = FILE_MAP_WRITE; |
195 | else |
196 | dwDesiredAccess = FILE_MAP_READ; |
197 | if (prot & PROT_EXEC) |
198 | dwDesiredAccess |= FILE_MAP_EXECUTE; |
199 | if (flags & MAP_PRIVATE) |
200 | dwDesiredAccess |= FILE_MAP_COPY; |
201 | ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length); |
202 | if (ret == NULL) { |
203 | CloseHandle(h); |
204 | ret = MAP_FAILED; |
205 | } |
206 | return ret; |
207 | } |
208 | |
209 | static void munmap(void *addr, size_t length) |
210 | { |
211 | UnmapViewOfFile(addr); |
212 | /* ruh-ro, we leaked handle from CreateFileMapping() ... */ |
213 | } |
214 | #elif defined(NO_MMAP) |
215 | #define PROT_EXEC 0x04 |
216 | #define MAP_FAILED 0 |
217 | #define PROT_READ 0 |
218 | #define PROT_WRITE 0 |
219 | #define MAP_PRIVATE 0 |
220 | #define MAP_ANONYMOUS 0 |
221 | |
222 | void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off) |
223 | { |
224 | return malloc(len); |
225 | } |
226 | |
227 | void munmap(void *base_addr, size_t len) |
228 | { |
229 | free(base_addr); |
230 | } |
231 | |
232 | int mprotect(void *addr, size_t len, int prot) |
233 | { |
234 | /* stub - not really needed at this point since this codepath has no dynarecs */ |
235 | return 0; |
236 | } |
237 | |
238 | #endif |
239 | |
240 | #ifndef MAP_ANONYMOUS |
241 | #define MAP_ANONYMOUS MAP_ANON |
242 | #endif |
243 | |
244 | #ifdef _3DS |
245 | typedef struct |
246 | { |
247 | unsigned int requested_map; |
248 | void* buffer; |
249 | }pico_mmap_t; |
250 | |
251 | pico_mmap_t pico_mmaps[] = { |
252 | {0x02000000, 0}, |
253 | {0x06000000, 0}, |
254 | {NULL, 0} |
255 | }; |
256 | |
257 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) |
258 | { |
259 | (void)is_fixed; |
260 | |
261 | if (ctr_svchack_successful) |
262 | { |
263 | pico_mmap_t* pico_mmap; |
264 | |
265 | for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++) |
266 | { |
267 | if ((pico_mmap->requested_map == addr)) |
268 | { |
269 | unsigned int ptr_aligned, tmp; |
270 | unsigned int currentHandle; |
271 | unsigned int perm = 0b011; |
272 | |
273 | if (need_exec) |
274 | perm = 0b111; |
275 | |
276 | size = (size + 0xFFF) & ~0xFFF; |
277 | pico_mmap->buffer = malloc(size + 0x1000); |
278 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
279 | |
280 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
281 | |
282 | if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0) |
283 | { |
284 | if (log_cb) |
285 | log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map); |
286 | exit(1); |
287 | } |
288 | |
289 | svcCloseHandle(currentHandle); |
290 | return (void*)pico_mmap->requested_map; |
291 | } |
292 | } |
293 | } |
294 | |
295 | return malloc(size); |
296 | } |
297 | |
298 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
299 | { |
300 | if (ctr_svchack_successful) |
301 | { |
302 | pico_mmap_t* pico_mmap; |
303 | |
304 | for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++) |
305 | { |
306 | if ((pico_mmap->requested_map == (unsigned int)ptr)) |
307 | { |
308 | unsigned int ptr_aligned; |
309 | unsigned int currentHandle; |
310 | void* tmp; |
311 | |
312 | oldsize = (oldsize + 0xFFF) & ~0xFFF; |
313 | newsize = (newsize + 0xFFF) & ~0xFFF; |
314 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
315 | |
316 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
317 | |
318 | svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011); |
319 | |
320 | tmp = realloc(pico_mmap->buffer, newsize + 0x1000); |
321 | if(!tmp) |
322 | return NULL; |
323 | |
324 | pico_mmap->buffer = tmp; |
325 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
326 | |
327 | svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3); |
328 | |
329 | svcCloseHandle(currentHandle); |
330 | |
331 | return ptr; |
332 | } |
333 | } |
334 | } |
335 | |
336 | return realloc(ptr, newsize); |
337 | |
338 | } |
339 | void plat_munmap(void *ptr, size_t size) |
340 | { |
341 | if (ctr_svchack_successful) |
342 | { |
343 | pico_mmap_t* pico_mmap; |
344 | |
345 | for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++) |
346 | { |
347 | if ((pico_mmap->requested_map == (unsigned int)ptr)) |
348 | { |
349 | unsigned int ptr_aligned; |
350 | unsigned int currentHandle; |
351 | |
352 | size = (size + 0xFFF) & ~0xFFF; |
353 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
354 | |
355 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
356 | |
357 | svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011); |
358 | |
359 | svcCloseHandle(currentHandle); |
360 | |
361 | free(pico_mmap->buffer); |
362 | pico_mmap->buffer = NULL; |
363 | return; |
364 | } |
365 | } |
366 | } |
367 | |
368 | free(ptr); |
369 | } |
370 | |
371 | #else |
372 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) |
373 | { |
374 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; |
375 | void *req, *ret; |
376 | |
377 | req = (void *)addr; |
378 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); |
379 | if (ret == MAP_FAILED) { |
380 | if (log_cb) |
381 | log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno); |
382 | return NULL; |
383 | } |
384 | |
385 | if (addr != 0 && ret != (void *)addr) { |
386 | if (log_cb) |
387 | log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n", |
388 | addr, ret); |
389 | |
390 | if (is_fixed) { |
391 | munmap(ret, size); |
392 | return NULL; |
393 | } |
394 | } |
395 | |
396 | return ret; |
397 | } |
398 | |
399 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
400 | { |
401 | #ifdef __linux__ |
402 | void *ret = mremap(ptr, oldsize, newsize, 0); |
403 | if (ret == MAP_FAILED) |
404 | return NULL; |
405 | |
406 | return ret; |
407 | #else |
408 | void *tmp, *ret; |
409 | size_t preserve_size; |
410 | |
411 | preserve_size = oldsize; |
412 | if (preserve_size > newsize) |
413 | preserve_size = newsize; |
414 | tmp = malloc(preserve_size); |
415 | if (tmp == NULL) |
416 | return NULL; |
417 | memcpy(tmp, ptr, preserve_size); |
418 | |
419 | munmap(ptr, oldsize); |
420 | ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE, |
421 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
422 | if (ret == MAP_FAILED) { |
423 | free(tmp); |
424 | return NULL; |
425 | } |
426 | memcpy(ret, tmp, preserve_size); |
427 | free(tmp); |
428 | return ret; |
429 | #endif |
430 | } |
431 | |
432 | void plat_munmap(void *ptr, size_t size) |
433 | { |
434 | if (ptr != NULL) |
435 | munmap(ptr, size); |
436 | } |
437 | #endif |
438 | |
df925153 |
439 | // if NULL is returned, static buffer is used |
440 | void *plat_mem_get_for_drc(size_t size) |
441 | { |
442 | void *mem = NULL; |
443 | #ifdef VITA |
444 | sceKernelGetMemBlockBase(sceBlock, &mem); |
445 | #endif |
446 | return mem; |
447 | } |
448 | |
7612bf90 |
449 | int plat_mem_set_exec(void *ptr, size_t size) |
450 | { |
df925153 |
451 | int ret = -1; |
7612bf90 |
452 | #ifdef _WIN32 |
df925153 |
453 | ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, 0); |
7612bf90 |
454 | if (ret == 0 && log_cb) |
df925153 |
455 | log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size, |
456 | GetLastError()); |
7612bf90 |
457 | #elif defined(_3DS) |
7612bf90 |
458 | if (ctr_svchack_successful) |
459 | { |
460 | unsigned int currentHandle; |
461 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
462 | ret = svcControlProcessMemory(currentHandle, ptr, 0x0, |
463 | size, MEMOP_PROT, 0b111); |
464 | svcCloseHandle(currentHandle); |
465 | ctr_flush_invalidate_cache(); |
466 | |
467 | } |
468 | else |
469 | { |
470 | if (log_cb) |
471 | log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n"); |
472 | exit(1); |
473 | } |
474 | |
475 | #elif defined(VITA) |
df925153 |
476 | ret = sceKernelOpenVMDomain(); |
7612bf90 |
477 | #else |
df925153 |
478 | ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC); |
7612bf90 |
479 | if (ret != 0 && log_cb) |
480 | log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno); |
481 | #endif |
482 | return ret; |
483 | } |
484 | |
485 | void emu_video_mode_change(int start_line, int line_count, int is_32cols) |
486 | { |
24aab4da |
487 | struct retro_system_av_info av_info; |
488 | |
7612bf90 |
489 | memset(vout_buf, 0, 320 * 240 * 2); |
490 | vout_width = is_32cols ? 256 : 320; |
491 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
492 | if (show_overscan == true) line_count += 16; |
493 | if (show_overscan == true) start_line -= 8; |
494 | |
495 | vout_height = line_count; |
496 | vout_offset = vout_width * start_line; |
497 | |
498 | // Update the geometry |
7612bf90 |
499 | retro_get_system_av_info(&av_info); |
500 | environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info); |
501 | } |
502 | |
503 | void emu_32x_startup(void) |
504 | { |
505 | } |
506 | |
507 | void lprintf(const char *fmt, ...) |
508 | { |
509 | char buffer[256]; |
510 | va_list ap; |
511 | va_start(ap, fmt); |
512 | vsprintf(buffer, fmt, ap); |
513 | /* TODO - add 'level' param for warning/error messages? */ |
514 | if (log_cb) |
515 | log_cb(RETRO_LOG_INFO, "%s", buffer); |
516 | va_end(ap); |
517 | } |
518 | |
519 | /* libretro */ |
520 | void retro_set_environment(retro_environment_t cb) |
521 | { |
522 | static const struct retro_variable vars[] = { |
523 | { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" }, |
524 | { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" }, |
525 | { "picodrive_sprlim", "No sprite limit; disabled|enabled" }, |
526 | { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" }, |
527 | { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" }, |
7612bf90 |
528 | { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" }, |
529 | { "picodrive_overscan", "Show Overscan; disabled|enabled" }, |
530 | #ifdef DRC_SH2 |
531 | { "picodrive_drc", "Dynamic recompilers; enabled|disabled" }, |
532 | #endif |
533 | { NULL, NULL }, |
534 | }; |
535 | |
536 | environ_cb = cb; |
537 | |
538 | cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars); |
539 | } |
540 | |
541 | void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; } |
542 | void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; } |
543 | void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; } |
544 | void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; } |
545 | void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; } |
546 | |
547 | unsigned retro_api_version(void) |
548 | { |
549 | return RETRO_API_VERSION; |
550 | } |
551 | |
552 | void retro_set_controller_port_device(unsigned port, unsigned device) |
553 | { |
554 | } |
555 | |
556 | void retro_get_system_info(struct retro_system_info *info) |
557 | { |
558 | memset(info, 0, sizeof(*info)); |
559 | info->library_name = "PicoDrive"; |
560 | #ifndef GIT_VERSION |
561 | #define GIT_VERSION "" |
562 | #endif |
563 | info->library_version = VERSION GIT_VERSION; |
564 | info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms"; |
565 | info->need_fullpath = true; |
566 | } |
567 | |
568 | void retro_get_system_av_info(struct retro_system_av_info *info) |
569 | { |
24aab4da |
570 | float common_width; |
571 | |
7612bf90 |
572 | memset(info, 0, sizeof(*info)); |
573 | info->timing.fps = Pico.m.pal ? 50 : 60; |
574 | info->timing.sample_rate = 44100; |
575 | info->geometry.base_width = vout_width; |
576 | info->geometry.base_height = vout_height; |
577 | info->geometry.max_width = vout_width; |
578 | info->geometry.max_height = vout_height; |
579 | |
24aab4da |
580 | common_width = vout_width; |
7612bf90 |
581 | if (user_vout_width != 0) |
582 | common_width = user_vout_width; |
583 | |
584 | info->geometry.aspect_ratio = common_width / vout_height; |
585 | } |
586 | |
587 | /* savestates */ |
588 | struct savestate_state { |
589 | const char *load_buf; |
590 | char *save_buf; |
591 | size_t size; |
592 | size_t pos; |
593 | }; |
594 | |
595 | size_t state_read(void *p, size_t size, size_t nmemb, void *file) |
596 | { |
597 | struct savestate_state *state = file; |
598 | size_t bsize = size * nmemb; |
599 | |
600 | if (state->pos + bsize > state->size) { |
601 | if (log_cb) |
602 | log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n", |
603 | state->pos + bsize, state->size); |
604 | bsize = state->size - state->pos; |
605 | if ((int)bsize <= 0) |
606 | return 0; |
607 | } |
608 | |
609 | memcpy(p, state->load_buf + state->pos, bsize); |
610 | state->pos += bsize; |
611 | return bsize; |
612 | } |
613 | |
614 | size_t state_write(void *p, size_t size, size_t nmemb, void *file) |
615 | { |
616 | struct savestate_state *state = file; |
617 | size_t bsize = size * nmemb; |
618 | |
619 | if (state->pos + bsize > state->size) { |
620 | if (log_cb) |
621 | log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n", |
622 | state->pos + bsize, state->size); |
623 | bsize = state->size - state->pos; |
624 | if ((int)bsize <= 0) |
625 | return 0; |
626 | } |
627 | |
628 | memcpy(state->save_buf + state->pos, p, bsize); |
629 | state->pos += bsize; |
630 | return bsize; |
631 | } |
632 | |
633 | size_t state_skip(void *p, size_t size, size_t nmemb, void *file) |
634 | { |
635 | struct savestate_state *state = file; |
636 | size_t bsize = size * nmemb; |
637 | |
638 | state->pos += bsize; |
639 | return bsize; |
640 | } |
641 | |
642 | size_t state_eof(void *file) |
643 | { |
644 | struct savestate_state *state = file; |
645 | |
646 | return state->pos >= state->size; |
647 | } |
648 | |
649 | int state_fseek(void *file, long offset, int whence) |
650 | { |
651 | struct savestate_state *state = file; |
652 | |
653 | switch (whence) { |
654 | case SEEK_SET: |
655 | state->pos = offset; |
656 | break; |
657 | case SEEK_CUR: |
658 | state->pos += offset; |
659 | break; |
660 | case SEEK_END: |
661 | state->pos = state->size + offset; |
662 | break; |
663 | } |
664 | return (int)state->pos; |
665 | } |
666 | |
667 | /* savestate sizes vary wildly depending if cd/32x or |
668 | * carthw is active, so run the whole thing to get size */ |
669 | size_t retro_serialize_size(void) |
670 | { |
671 | struct savestate_state state = { 0, }; |
672 | int ret; |
673 | |
674 | ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek); |
675 | if (ret != 0) |
676 | return 0; |
677 | |
678 | return state.pos; |
679 | } |
680 | |
681 | bool retro_serialize(void *data, size_t size) |
682 | { |
683 | struct savestate_state state = { 0, }; |
684 | int ret; |
685 | |
686 | state.save_buf = data; |
687 | state.size = size; |
688 | state.pos = 0; |
689 | |
690 | ret = PicoStateFP(&state, 1, NULL, state_write, |
691 | NULL, state_fseek); |
692 | return ret == 0; |
693 | } |
694 | |
695 | bool retro_unserialize(const void *data, size_t size) |
696 | { |
697 | struct savestate_state state = { 0, }; |
698 | int ret; |
699 | |
700 | state.load_buf = data; |
701 | state.size = size; |
702 | state.pos = 0; |
703 | |
704 | ret = PicoStateFP(&state, 0, state_read, NULL, |
705 | state_eof, state_fseek); |
706 | return ret == 0; |
707 | } |
708 | |
709 | typedef struct patch |
710 | { |
711 | unsigned int addr; |
712 | unsigned short data; |
713 | unsigned char comp; |
714 | } patch; |
715 | |
716 | extern void decode(char *buff, patch *dest); |
717 | extern uint16_t m68k_read16(uint32_t a); |
718 | extern void m68k_write16(uint32_t a, uint16_t d); |
719 | |
720 | void retro_cheat_reset(void) |
721 | { |
722 | int i=0; |
723 | unsigned int addr; |
724 | |
725 | for (i = 0; i < PicoPatchCount; i++) |
726 | { |
727 | addr = PicoPatches[i].addr; |
728 | if (addr < Pico.romsize) { |
729 | if (PicoPatches[i].active) |
730 | *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old; |
731 | } else { |
732 | if (PicoPatches[i].active) |
733 | m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old); |
734 | } |
735 | } |
736 | |
737 | PicoPatchUnload(); |
738 | } |
739 | |
740 | void retro_cheat_set(unsigned index, bool enabled, const char *code) |
741 | { |
742 | patch pt; |
743 | int array_len = PicoPatchCount; |
744 | char codeCopy[256]; |
745 | char *buff; |
746 | |
747 | if (code=='\0') return; |
748 | strcpy(codeCopy,code); |
749 | buff = strtok(codeCopy,"+"); |
750 | |
751 | while (buff != NULL) |
752 | { |
753 | decode(buff, &pt); |
754 | if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1) |
755 | { |
756 | log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff); |
757 | return; |
758 | } |
759 | |
760 | /* code was good, add it */ |
761 | if (array_len < PicoPatchCount + 1) |
762 | { |
763 | void *ptr; |
764 | array_len *= 2; |
765 | array_len++; |
766 | ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0])); |
767 | if (ptr == NULL) { |
768 | log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff); |
769 | return; |
770 | } |
771 | PicoPatches = ptr; |
772 | } |
773 | strcpy(PicoPatches[PicoPatchCount].code, buff); |
774 | |
775 | PicoPatches[PicoPatchCount].active = enabled; |
776 | PicoPatches[PicoPatchCount].addr = pt.addr; |
777 | PicoPatches[PicoPatchCount].data = pt.data; |
778 | PicoPatches[PicoPatchCount].comp = pt.comp; |
779 | if (PicoPatches[PicoPatchCount].addr < Pico.romsize) |
780 | PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr); |
781 | else |
782 | PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr); |
783 | PicoPatchCount++; |
784 | |
785 | buff = strtok(NULL,"+"); |
786 | } |
787 | } |
788 | |
789 | /* multidisk support */ |
790 | static bool disk_ejected; |
791 | static unsigned int disk_current_index; |
792 | static unsigned int disk_count; |
793 | static struct disks_state { |
794 | char *fname; |
795 | } disks[8]; |
796 | |
797 | static bool disk_set_eject_state(bool ejected) |
798 | { |
799 | // TODO? |
800 | disk_ejected = ejected; |
801 | return true; |
802 | } |
803 | |
804 | static bool disk_get_eject_state(void) |
805 | { |
806 | return disk_ejected; |
807 | } |
808 | |
809 | static unsigned int disk_get_image_index(void) |
810 | { |
811 | return disk_current_index; |
812 | } |
813 | |
814 | static bool disk_set_image_index(unsigned int index) |
815 | { |
816 | enum cd_img_type cd_type; |
817 | int ret; |
818 | |
819 | if (index >= sizeof(disks) / sizeof(disks[0])) |
820 | return false; |
821 | |
822 | if (disks[index].fname == NULL) { |
823 | if (log_cb) |
824 | log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index); |
825 | |
826 | // RetroArch specifies "no disk" with index == count, |
827 | // so don't fail here.. |
828 | disk_current_index = index; |
829 | return true; |
830 | } |
831 | |
832 | if (log_cb) |
833 | log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index, |
834 | disks[index].fname); |
835 | |
836 | ret = -1; |
837 | cd_type = PicoCdCheck(disks[index].fname, NULL); |
838 | if (cd_type != CIT_NOT_CD) |
839 | ret = cdd_load(disks[index].fname, cd_type); |
840 | if (ret != 0) { |
841 | if (log_cb) |
842 | log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n"); |
843 | return 0; |
844 | } |
845 | |
846 | disk_current_index = index; |
847 | return true; |
848 | } |
849 | |
850 | static unsigned int disk_get_num_images(void) |
851 | { |
852 | return disk_count; |
853 | } |
854 | |
855 | static bool disk_replace_image_index(unsigned index, |
856 | const struct retro_game_info *info) |
857 | { |
858 | bool ret = true; |
859 | |
860 | if (index >= sizeof(disks) / sizeof(disks[0])) |
861 | return false; |
862 | |
863 | if (disks[index].fname != NULL) |
864 | free(disks[index].fname); |
865 | disks[index].fname = NULL; |
866 | |
867 | if (info != NULL) { |
868 | disks[index].fname = strdup(info->path); |
869 | if (index == disk_current_index) |
870 | ret = disk_set_image_index(index); |
871 | } |
872 | |
873 | return ret; |
874 | } |
875 | |
876 | static bool disk_add_image_index(void) |
877 | { |
878 | if (disk_count >= sizeof(disks) / sizeof(disks[0])) |
879 | return false; |
880 | |
881 | disk_count++; |
882 | return true; |
883 | } |
884 | |
885 | static struct retro_disk_control_callback disk_control = { |
886 | disk_set_eject_state, |
887 | disk_get_eject_state, |
888 | disk_get_image_index, |
889 | disk_set_image_index, |
890 | disk_get_num_images, |
891 | disk_replace_image_index, |
892 | disk_add_image_index, |
893 | }; |
894 | |
895 | static void disk_tray_open(void) |
896 | { |
897 | if (log_cb) |
898 | log_cb(RETRO_LOG_INFO, "cd tray open\n"); |
899 | disk_ejected = 1; |
900 | } |
901 | |
902 | static void disk_tray_close(void) |
903 | { |
904 | if (log_cb) |
905 | log_cb(RETRO_LOG_INFO, "cd tray close\n"); |
906 | disk_ejected = 0; |
907 | } |
908 | |
909 | |
910 | static const char * const biosfiles_us[] = { |
911 | "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U" |
912 | }; |
913 | static const char * const biosfiles_eu[] = { |
914 | "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E" |
915 | }; |
916 | static const char * const biosfiles_jp[] = { |
917 | "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J" |
918 | }; |
919 | |
920 | static void make_system_path(char *buf, size_t buf_size, |
921 | const char *name, const char *ext) |
922 | { |
923 | const char *dir = NULL; |
924 | |
925 | if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) { |
926 | snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext); |
927 | } |
928 | else { |
929 | snprintf(buf, buf_size, "%s%s", name, ext); |
930 | } |
931 | } |
932 | |
933 | static const char *find_bios(int *region, const char *cd_fname) |
934 | { |
935 | const char * const *files; |
936 | static char path[256]; |
937 | int i, count; |
938 | FILE *f = NULL; |
939 | |
940 | if (*region == 4) { // US |
941 | files = biosfiles_us; |
942 | count = sizeof(biosfiles_us) / sizeof(char *); |
943 | } else if (*region == 8) { // EU |
944 | files = biosfiles_eu; |
945 | count = sizeof(biosfiles_eu) / sizeof(char *); |
946 | } else if (*region == 1 || *region == 2) { |
947 | files = biosfiles_jp; |
948 | count = sizeof(biosfiles_jp) / sizeof(char *); |
949 | } else { |
950 | return NULL; |
951 | } |
952 | |
953 | for (i = 0; i < count; i++) |
954 | { |
955 | make_system_path(path, sizeof(path), files[i], ".bin"); |
956 | f = fopen(path, "rb"); |
957 | if (f != NULL) |
958 | break; |
959 | |
960 | make_system_path(path, sizeof(path), files[i], ".zip"); |
961 | f = fopen(path, "rb"); |
962 | if (f != NULL) |
963 | break; |
964 | } |
965 | |
966 | if (f != NULL) { |
967 | if (log_cb) |
968 | log_cb(RETRO_LOG_INFO, "using bios: %s\n", path); |
969 | fclose(f); |
970 | return path; |
971 | } |
972 | |
973 | return NULL; |
974 | } |
975 | |
7612bf90 |
976 | bool retro_load_game(const struct retro_game_info *info) |
977 | { |
978 | enum media_type_e media_type; |
979 | static char carthw_path[256]; |
980 | size_t i; |
981 | |
982 | struct retro_input_descriptor desc[] = { |
983 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
984 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
985 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
986 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
987 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, |
988 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, |
989 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, |
990 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, |
991 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, |
992 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, |
993 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" }, |
994 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, |
995 | |
996 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
997 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
998 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
999 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
1000 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, |
1001 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, |
1002 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, |
1003 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, |
1004 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, |
1005 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, |
1006 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" }, |
1007 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, |
1008 | |
1009 | { 0 }, |
1010 | }; |
1011 | |
1012 | struct retro_input_descriptor desc_sms[] = { |
1013 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
1014 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
1015 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
1016 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
1017 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" }, |
1018 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" }, |
1019 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" }, |
1020 | |
1021 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
1022 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
1023 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
1024 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
1025 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" }, |
1026 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" }, |
1027 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" }, |
1028 | |
1029 | { 0 }, |
1030 | }; |
1031 | |
7612bf90 |
1032 | enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565; |
1033 | if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { |
1034 | if (log_cb) |
1035 | log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n"); |
1036 | return false; |
1037 | } |
1038 | |
1039 | if (info == NULL || info->path == NULL) { |
1040 | if (log_cb) |
1041 | log_cb(RETRO_LOG_ERROR, "info->path required\n"); |
1042 | return false; |
1043 | } |
1044 | |
1045 | for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) { |
1046 | if (disks[i].fname != NULL) { |
1047 | free(disks[i].fname); |
1048 | disks[i].fname = NULL; |
1049 | } |
1050 | } |
1051 | |
1052 | disk_current_index = 0; |
1053 | disk_count = 1; |
1054 | disks[0].fname = strdup(info->path); |
1055 | |
1056 | make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg"); |
1057 | |
1058 | media_type = PicoLoadMedia(info->path, carthw_path, |
1059 | find_bios, NULL); |
1060 | |
1061 | switch (media_type) { |
1062 | case PM_BAD_DETECT: |
1063 | if (log_cb) |
1064 | log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n"); |
1065 | return false; |
1066 | case PM_BAD_CD: |
1067 | if (log_cb) |
1068 | log_cb(RETRO_LOG_ERROR, "Invalid CD image\n"); |
1069 | return false; |
1070 | case PM_BAD_CD_NO_BIOS: |
1071 | if (log_cb) |
1072 | log_cb(RETRO_LOG_ERROR, "Missing BIOS\n"); |
1073 | return false; |
1074 | case PM_ERROR: |
1075 | if (log_cb) |
1076 | log_cb(RETRO_LOG_ERROR, "Load error\n"); |
1077 | return false; |
1078 | default: |
1079 | break; |
1080 | } |
1081 | |
1082 | if (media_type == PM_MARK3) |
1083 | environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms); |
1084 | else |
1085 | environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc); |
1086 | |
1087 | PicoLoopPrepare(); |
1088 | |
1089 | PicoWriteSound = snd_write; |
1090 | memset(sndBuffer, 0, sizeof(sndBuffer)); |
1091 | PsndOut = sndBuffer; |
1092 | PsndRerate(0); |
1093 | |
1094 | return true; |
1095 | } |
1096 | |
1097 | bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info) |
1098 | { |
1099 | return false; |
1100 | } |
1101 | |
1102 | void retro_unload_game(void) |
1103 | { |
1104 | } |
1105 | |
1106 | unsigned retro_get_region(void) |
1107 | { |
1108 | return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC; |
1109 | } |
1110 | |
1111 | void *retro_get_memory_data(unsigned type) |
1112 | { |
1113 | uint8_t* data; |
1114 | |
1115 | switch(type) |
1116 | { |
1117 | case RETRO_MEMORY_SAVE_RAM: |
1118 | if (PicoAHW & PAHW_MCD) |
1119 | data = Pico_mcd->bram; |
1120 | else |
28a5b392 |
1121 | data = Pico.sv.data; |
7612bf90 |
1122 | break; |
1123 | case RETRO_MEMORY_SYSTEM_RAM: |
1124 | if (PicoAHW & PAHW_SMS) |
28a5b392 |
1125 | data = PicoMem.zram; |
7612bf90 |
1126 | else |
28a5b392 |
1127 | data = PicoMem.ram; |
7612bf90 |
1128 | break; |
1129 | default: |
1130 | data = NULL; |
1131 | break; |
1132 | } |
1133 | |
1134 | return data; |
1135 | } |
1136 | |
1137 | size_t retro_get_memory_size(unsigned type) |
1138 | { |
1139 | unsigned int i; |
1140 | int sum; |
1141 | |
1142 | switch(type) |
1143 | { |
1144 | case RETRO_MEMORY_SAVE_RAM: |
1145 | if (PicoAHW & PAHW_MCD) |
1146 | // bram |
1147 | return 0x2000; |
1148 | |
1149 | if (Pico.m.frame_count == 0) |
28a5b392 |
1150 | return Pico.sv.size; |
7612bf90 |
1151 | |
1152 | // if game doesn't write to sram, don't report it to |
1153 | // libretro so that RA doesn't write out zeroed .srm |
28a5b392 |
1154 | for (i = 0, sum = 0; i < Pico.sv.size; i++) |
1155 | sum |= Pico.sv.data[i]; |
7612bf90 |
1156 | |
28a5b392 |
1157 | return (sum != 0) ? Pico.sv.size : 0; |
7612bf90 |
1158 | |
1159 | case RETRO_MEMORY_SYSTEM_RAM: |
1160 | if (PicoAHW & PAHW_SMS) |
1161 | return 0x2000; |
1162 | else |
28a5b392 |
1163 | return sizeof(PicoMem.ram); |
7612bf90 |
1164 | |
1165 | default: |
1166 | return 0; |
1167 | } |
1168 | |
1169 | } |
1170 | |
1171 | void retro_reset(void) |
1172 | { |
1173 | PicoReset(); |
1174 | } |
1175 | |
1176 | static const unsigned short retro_pico_map[] = { |
1177 | 1 << GBTN_B, |
1178 | 1 << GBTN_A, |
1179 | 1 << GBTN_MODE, |
1180 | 1 << GBTN_START, |
1181 | 1 << GBTN_UP, |
1182 | 1 << GBTN_DOWN, |
1183 | 1 << GBTN_LEFT, |
1184 | 1 << GBTN_RIGHT, |
1185 | 1 << GBTN_C, |
1186 | 1 << GBTN_Y, |
1187 | 1 << GBTN_X, |
1188 | 1 << GBTN_Z, |
1189 | }; |
1190 | #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0])) |
1191 | |
1192 | static void snd_write(int len) |
1193 | { |
1194 | audio_batch_cb(PsndOut, len / 4); |
1195 | } |
1196 | |
1197 | static enum input_device input_name_to_val(const char *name) |
1198 | { |
1199 | if (strcmp(name, "3 button pad") == 0) |
1200 | return PICO_INPUT_PAD_3BTN; |
1201 | if (strcmp(name, "6 button pad") == 0) |
1202 | return PICO_INPUT_PAD_6BTN; |
1203 | if (strcmp(name, "None") == 0) |
1204 | return PICO_INPUT_NOTHING; |
1205 | |
1206 | if (log_cb) |
1207 | log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name); |
1208 | return PICO_INPUT_PAD_3BTN; |
1209 | } |
1210 | |
1211 | static void update_variables(void) |
1212 | { |
1213 | struct retro_variable var; |
24aab4da |
1214 | int OldPicoRegionOverride; |
1215 | float old_user_vout_width; |
7612bf90 |
1216 | |
1217 | var.value = NULL; |
1218 | var.key = "picodrive_input1"; |
1219 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) |
1220 | PicoSetInputDevice(0, input_name_to_val(var.value)); |
1221 | |
1222 | var.value = NULL; |
1223 | var.key = "picodrive_input2"; |
1224 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) |
1225 | PicoSetInputDevice(1, input_name_to_val(var.value)); |
1226 | |
1227 | var.value = NULL; |
1228 | var.key = "picodrive_sprlim"; |
1229 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1230 | if (strcmp(var.value, "enabled") == 0) |
1231 | PicoOpt |= POPT_DIS_SPRITE_LIM; |
1232 | else |
1233 | PicoOpt &= ~POPT_DIS_SPRITE_LIM; |
1234 | } |
1235 | |
1236 | var.value = NULL; |
1237 | var.key = "picodrive_ramcart"; |
1238 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1239 | if (strcmp(var.value, "enabled") == 0) |
1240 | PicoOpt |= POPT_EN_MCD_RAMCART; |
1241 | else |
1242 | PicoOpt &= ~POPT_EN_MCD_RAMCART; |
1243 | } |
1244 | |
24aab4da |
1245 | OldPicoRegionOverride = PicoRegionOverride; |
7612bf90 |
1246 | var.value = NULL; |
1247 | var.key = "picodrive_region"; |
1248 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1249 | if (strcmp(var.value, "Auto") == 0) |
1250 | PicoRegionOverride = 0; |
1251 | else if (strcmp(var.value, "Japan NTSC") == 0) |
1252 | PicoRegionOverride = 1; |
1253 | else if (strcmp(var.value, "Japan PAL") == 0) |
1254 | PicoRegionOverride = 2; |
1255 | else if (strcmp(var.value, "US") == 0) |
1256 | PicoRegionOverride = 4; |
1257 | else if (strcmp(var.value, "Europe") == 0) |
1258 | PicoRegionOverride = 8; |
1259 | } |
1260 | |
7612bf90 |
1261 | // Update region, fps and sound flags if needed |
28a5b392 |
1262 | if (Pico.rom && PicoRegionOverride != OldPicoRegionOverride) |
7612bf90 |
1263 | { |
1264 | PicoDetectRegion(); |
1265 | PicoLoopPrepare(); |
1266 | PsndRerate(1); |
1267 | } |
1268 | |
24aab4da |
1269 | old_user_vout_width = user_vout_width; |
7612bf90 |
1270 | var.value = NULL; |
1271 | var.key = "picodrive_aspect"; |
1272 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1273 | if (strcmp(var.value, "4/3") == 0) |
1274 | user_vout_width = VOUT_4_3; |
1275 | else if (strcmp(var.value, "CRT") == 0) |
1276 | user_vout_width = VOUT_CRT; |
1277 | else |
1278 | user_vout_width = VOUT_PAR; |
1279 | } |
1280 | |
1281 | var.value = NULL; |
1282 | var.key = "picodrive_overscan"; |
1283 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1284 | if (strcmp(var.value, "enabled") == 0) |
1285 | show_overscan = true; |
1286 | else |
1287 | show_overscan = false; |
1288 | } |
1289 | |
1290 | if (user_vout_width != old_user_vout_width) |
1291 | { |
1292 | // Update the geometry |
1293 | struct retro_system_av_info av_info; |
1294 | retro_get_system_av_info(&av_info); |
1295 | environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info); |
1296 | } |
1297 | |
1298 | #ifdef DRC_SH2 |
1299 | var.value = NULL; |
1300 | var.key = "picodrive_drc"; |
1301 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1302 | if (strcmp(var.value, "enabled") == 0) |
1303 | PicoOpt |= POPT_EN_DRC; |
1304 | else |
1305 | PicoOpt &= ~POPT_EN_DRC; |
1306 | } |
1307 | #endif |
1308 | #ifdef _3DS |
1309 | if(!ctr_svchack_successful) |
1310 | PicoOpt &= ~POPT_EN_DRC; |
1311 | #endif |
1312 | } |
1313 | |
1314 | void retro_run(void) |
1315 | { |
1316 | bool updated = false; |
1317 | int pad, i; |
1318 | |
1319 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) |
1320 | update_variables(); |
1321 | |
1322 | input_poll_cb(); |
1323 | |
1324 | PicoPad[0] = PicoPad[1] = 0; |
1325 | for (pad = 0; pad < 2; pad++) |
1326 | for (i = 0; i < RETRO_PICO_MAP_LEN; i++) |
1327 | if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i)) |
1328 | PicoPad[pad] |= retro_pico_map[i]; |
1329 | |
1330 | PicoPatchApply(); |
1331 | PicoFrame(); |
1332 | |
1333 | video_cb((short *)vout_buf + vout_offset, |
1334 | vout_width, vout_height, vout_width * 2); |
1335 | } |
1336 | |
7612bf90 |
1337 | void retro_init(void) |
1338 | { |
1339 | struct retro_log_callback log; |
1340 | int level; |
1341 | |
1342 | level = 0; |
1343 | environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level); |
1344 | |
1345 | if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log)) |
1346 | log_cb = log.log; |
1347 | else |
1348 | log_cb = NULL; |
1349 | |
1350 | environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control); |
1351 | |
1352 | #ifdef _3DS |
1353 | ctr_svchack_successful = ctr_svchack_init(); |
1354 | #elif defined(VITA) |
1355 | sceBlock = getVMBlock(); |
1356 | #endif |
1357 | |
1358 | PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |
1359 | | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX |
1360 | | POPT_EN_32X|POPT_EN_PWM |
1361 | | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER; |
1362 | #ifdef __arm__ |
1363 | #ifdef _3DS |
1364 | if (ctr_svchack_successful) |
1365 | #endif |
1366 | PicoOpt |= POPT_EN_DRC; |
1367 | #endif |
1368 | PsndRate = 44100; |
1369 | PicoAutoRgnOrder = 0x184; // US, EU, JP |
1370 | |
1371 | vout_width = 320; |
1372 | vout_height = 240; |
1373 | #ifdef _3DS |
1374 | vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80); |
1375 | #else |
1376 | vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2); |
1377 | #endif |
1378 | |
1379 | PicoInit(); |
1380 | PicoDrawSetOutFormat(PDF_RGB555, 0); |
1381 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
1382 | |
1383 | //PicoMessage = plat_status_msg_busy_next; |
1384 | PicoMCDopenTray = disk_tray_open; |
1385 | PicoMCDcloseTray = disk_tray_close; |
1386 | |
1387 | update_variables(); |
1388 | } |
1389 | |
1390 | void retro_deinit(void) |
1391 | { |
1392 | #ifdef _3DS |
1393 | linearFree(vout_buf); |
1394 | #else |
1395 | free(vout_buf); |
1396 | #endif |
1397 | vout_buf = NULL; |
1398 | PicoExit(); |
1399 | } |
df925153 |
1400 | |
1401 | // vim:shiftwidth=3:ts=3:expandtab |