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> |
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13 | #include <stdlib.h> |
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14 | #include <stdarg.h> |
15 | #include <string.h> |
16 | #ifndef _WIN32 |
17 | #ifndef NO_MMAP |
18 | #include <sys/mman.h> |
19 | #endif |
20 | #else |
21 | #include <io.h> |
22 | #include <windows.h> |
23 | #include <sys/types.h> |
24 | #endif |
25 | #include <errno.h> |
26 | #ifdef __MACH__ |
27 | #include <libkern/OSCacheControl.h> |
28 | #endif |
29 | |
30 | #ifdef _3DS |
31 | #include "3ds/3ds_utils.h" |
32 | #define MEMOP_MAP 4 |
33 | #define MEMOP_UNMAP 5 |
34 | #define MEMOP_PROT 6 |
35 | |
36 | int svcDuplicateHandle(unsigned int* out, unsigned int original); |
37 | int svcCloseHandle(unsigned int handle); |
38 | int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1, |
39 | unsigned int size, unsigned int type, unsigned int perm); |
40 | void* linearMemAlign(size_t size, size_t alignment); |
41 | void linearFree(void* mem); |
42 | |
43 | static int ctr_svchack_successful = 0; |
44 | |
45 | #elif defined(VITA) |
46 | #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes |
47 | |
48 | #include <psp2/kernel/sysmem.h> |
49 | static int sceBlock; |
50 | int getVMBlock(); |
51 | int _newlib_vm_size_user = 1 << TARGET_SIZE_2; |
52 | |
53 | #endif |
54 | |
55 | #include <pico/pico_int.h> |
56 | #include <pico/state.h> |
57 | #include <pico/patch.h> |
58 | #include "../common/input_pico.h" |
59 | #include "../common/version.h" |
60 | #include "libretro.h" |
61 | |
62 | static retro_log_printf_t log_cb; |
63 | static retro_video_refresh_t video_cb; |
64 | static retro_input_poll_t input_poll_cb; |
65 | static retro_input_state_t input_state_cb; |
66 | static retro_environment_t environ_cb; |
67 | static retro_audio_sample_batch_t audio_batch_cb; |
68 | |
69 | #define VOUT_MAX_WIDTH 320 |
70 | #define VOUT_MAX_HEIGHT 240 |
71 | |
72 | static const float VOUT_PAR = 0.0; |
73 | static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f)); |
74 | static const float VOUT_CRT = (224.0f * 1.29911f); |
75 | |
76 | bool show_overscan = false; |
77 | |
78 | static void *vout_buf; |
79 | static int vout_width, vout_height, vout_offset; |
80 | static float user_vout_width = 0.0; |
81 | |
82 | #ifdef _MSC_VER |
83 | static short sndBuffer[2*44100/50]; |
84 | #else |
85 | static short __attribute__((aligned(4))) sndBuffer[2*44100/50]; |
86 | #endif |
87 | |
88 | static void snd_write(int len); |
89 | |
90 | #ifdef _WIN32 |
91 | #define SLASH '\\' |
92 | #else |
93 | #define SLASH '/' |
94 | #endif |
95 | |
96 | /* functions called by the core */ |
97 | |
98 | void cache_flush_d_inval_i(void *start, void *end) |
99 | { |
100 | #ifdef __arm__ |
101 | size_t len = (char *)end - (char *)start; |
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102 | (void)len; |
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103 | #if defined(__BLACKBERRY_QNX__) |
104 | msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE); |
105 | #elif defined(__MACH__) |
106 | sys_dcache_flush(start, len); |
107 | sys_icache_invalidate(start, len); |
108 | #elif defined(_3DS) |
109 | ctr_flush_invalidate_cache(); |
110 | #elif defined(VITA) |
111 | sceKernelSyncVMDomain(sceBlock, start, len); |
112 | #else |
113 | __clear_cache(start, end); |
114 | #endif |
115 | #endif |
116 | } |
117 | |
118 | #ifdef _WIN32 |
119 | /* mmap() replacement for Windows |
120 | * |
121 | * Author: Mike Frysinger <vapier@gentoo.org> |
122 | * Placed into the public domain |
123 | */ |
124 | |
125 | /* References: |
126 | * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx |
127 | * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx |
128 | * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx |
129 | * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx |
130 | */ |
131 | |
132 | #define PROT_READ 0x1 |
133 | #define PROT_WRITE 0x2 |
134 | /* This flag is only available in WinXP+ */ |
135 | #ifdef FILE_MAP_EXECUTE |
136 | #define PROT_EXEC 0x4 |
137 | #else |
138 | #define PROT_EXEC 0x0 |
139 | #define FILE_MAP_EXECUTE 0 |
140 | #endif |
141 | |
142 | #define MAP_SHARED 0x01 |
143 | #define MAP_PRIVATE 0x02 |
144 | #define MAP_ANONYMOUS 0x20 |
145 | #define MAP_ANON MAP_ANONYMOUS |
146 | #define MAP_FAILED ((void *) -1) |
147 | |
148 | #ifdef __USE_FILE_OFFSET64 |
149 | # define DWORD_HI(x) (x >> 32) |
150 | # define DWORD_LO(x) ((x) & 0xffffffff) |
151 | #else |
152 | # define DWORD_HI(x) (0) |
153 | # define DWORD_LO(x) (x) |
154 | #endif |
155 | |
156 | static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset) |
157 | { |
158 | uint32_t flProtect, dwDesiredAccess; |
159 | off_t end; |
160 | HANDLE mmap_fd, h; |
161 | void *ret; |
162 | |
163 | if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC)) |
164 | return MAP_FAILED; |
165 | if (fd == -1) { |
166 | if (!(flags & MAP_ANON) || offset) |
167 | return MAP_FAILED; |
168 | } else if (flags & MAP_ANON) |
169 | return MAP_FAILED; |
170 | |
171 | if (prot & PROT_WRITE) { |
172 | if (prot & PROT_EXEC) |
173 | flProtect = PAGE_EXECUTE_READWRITE; |
174 | else |
175 | flProtect = PAGE_READWRITE; |
176 | } else if (prot & PROT_EXEC) { |
177 | if (prot & PROT_READ) |
178 | flProtect = PAGE_EXECUTE_READ; |
179 | else if (prot & PROT_EXEC) |
180 | flProtect = PAGE_EXECUTE; |
181 | } else |
182 | flProtect = PAGE_READONLY; |
183 | |
184 | end = length + offset; |
185 | |
186 | if (fd == -1) |
187 | mmap_fd = INVALID_HANDLE_VALUE; |
188 | else |
189 | mmap_fd = (HANDLE)_get_osfhandle(fd); |
190 | h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL); |
191 | if (h == NULL) |
192 | return MAP_FAILED; |
193 | |
194 | if (prot & PROT_WRITE) |
195 | dwDesiredAccess = FILE_MAP_WRITE; |
196 | else |
197 | dwDesiredAccess = FILE_MAP_READ; |
198 | if (prot & PROT_EXEC) |
199 | dwDesiredAccess |= FILE_MAP_EXECUTE; |
200 | if (flags & MAP_PRIVATE) |
201 | dwDesiredAccess |= FILE_MAP_COPY; |
202 | ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length); |
203 | if (ret == NULL) { |
204 | CloseHandle(h); |
205 | ret = MAP_FAILED; |
206 | } |
207 | return ret; |
208 | } |
209 | |
210 | static void munmap(void *addr, size_t length) |
211 | { |
212 | UnmapViewOfFile(addr); |
213 | /* ruh-ro, we leaked handle from CreateFileMapping() ... */ |
214 | } |
215 | #elif defined(NO_MMAP) |
216 | #define PROT_EXEC 0x04 |
217 | #define MAP_FAILED 0 |
218 | #define PROT_READ 0 |
219 | #define PROT_WRITE 0 |
220 | #define MAP_PRIVATE 0 |
221 | #define MAP_ANONYMOUS 0 |
222 | |
223 | void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off) |
224 | { |
225 | return malloc(len); |
226 | } |
227 | |
228 | void munmap(void *base_addr, size_t len) |
229 | { |
230 | free(base_addr); |
231 | } |
232 | |
233 | int mprotect(void *addr, size_t len, int prot) |
234 | { |
235 | /* stub - not really needed at this point since this codepath has no dynarecs */ |
236 | return 0; |
237 | } |
238 | |
239 | #endif |
240 | |
241 | #ifndef MAP_ANONYMOUS |
242 | #define MAP_ANONYMOUS MAP_ANON |
243 | #endif |
244 | |
245 | #ifdef _3DS |
246 | typedef struct |
247 | { |
248 | unsigned int requested_map; |
249 | void* buffer; |
250 | }pico_mmap_t; |
251 | |
252 | pico_mmap_t pico_mmaps[] = { |
253 | {0x02000000, 0}, |
254 | {0x06000000, 0}, |
255 | {NULL, 0} |
256 | }; |
257 | |
258 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) |
259 | { |
260 | (void)is_fixed; |
261 | |
262 | if (ctr_svchack_successful) |
263 | { |
264 | pico_mmap_t* pico_mmap; |
265 | |
266 | for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++) |
267 | { |
268 | if ((pico_mmap->requested_map == addr)) |
269 | { |
270 | unsigned int ptr_aligned, tmp; |
271 | unsigned int currentHandle; |
272 | unsigned int perm = 0b011; |
273 | |
274 | if (need_exec) |
275 | perm = 0b111; |
276 | |
277 | size = (size + 0xFFF) & ~0xFFF; |
278 | pico_mmap->buffer = malloc(size + 0x1000); |
279 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
280 | |
281 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
282 | |
283 | if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0) |
284 | { |
285 | if (log_cb) |
286 | log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map); |
287 | exit(1); |
288 | } |
289 | |
290 | svcCloseHandle(currentHandle); |
291 | return (void*)pico_mmap->requested_map; |
292 | } |
293 | } |
294 | } |
295 | |
296 | return malloc(size); |
297 | } |
298 | |
299 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
300 | { |
301 | if (ctr_svchack_successful) |
302 | { |
303 | pico_mmap_t* pico_mmap; |
304 | |
305 | for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++) |
306 | { |
307 | if ((pico_mmap->requested_map == (unsigned int)ptr)) |
308 | { |
309 | unsigned int ptr_aligned; |
310 | unsigned int currentHandle; |
311 | void* tmp; |
312 | |
313 | oldsize = (oldsize + 0xFFF) & ~0xFFF; |
314 | newsize = (newsize + 0xFFF) & ~0xFFF; |
315 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
316 | |
317 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
318 | |
319 | svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011); |
320 | |
321 | tmp = realloc(pico_mmap->buffer, newsize + 0x1000); |
322 | if(!tmp) |
323 | return NULL; |
324 | |
325 | pico_mmap->buffer = tmp; |
326 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
327 | |
328 | svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3); |
329 | |
330 | svcCloseHandle(currentHandle); |
331 | |
332 | return ptr; |
333 | } |
334 | } |
335 | } |
336 | |
337 | return realloc(ptr, newsize); |
338 | |
339 | } |
340 | void plat_munmap(void *ptr, size_t size) |
341 | { |
342 | if (ctr_svchack_successful) |
343 | { |
344 | pico_mmap_t* pico_mmap; |
345 | |
346 | for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++) |
347 | { |
348 | if ((pico_mmap->requested_map == (unsigned int)ptr)) |
349 | { |
350 | unsigned int ptr_aligned; |
351 | unsigned int currentHandle; |
352 | |
353 | size = (size + 0xFFF) & ~0xFFF; |
354 | ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF; |
355 | |
356 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
357 | |
358 | svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011); |
359 | |
360 | svcCloseHandle(currentHandle); |
361 | |
362 | free(pico_mmap->buffer); |
363 | pico_mmap->buffer = NULL; |
364 | return; |
365 | } |
366 | } |
367 | } |
368 | |
369 | free(ptr); |
370 | } |
371 | |
372 | #else |
373 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) |
374 | { |
375 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; |
376 | void *req, *ret; |
377 | |
378 | req = (void *)addr; |
379 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); |
380 | if (ret == MAP_FAILED) { |
381 | if (log_cb) |
382 | log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno); |
383 | return NULL; |
384 | } |
385 | |
386 | if (addr != 0 && ret != (void *)addr) { |
387 | if (log_cb) |
388 | log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n", |
389 | addr, ret); |
390 | |
391 | if (is_fixed) { |
392 | munmap(ret, size); |
393 | return NULL; |
394 | } |
395 | } |
396 | |
397 | return ret; |
398 | } |
399 | |
400 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
401 | { |
402 | #ifdef __linux__ |
403 | void *ret = mremap(ptr, oldsize, newsize, 0); |
404 | if (ret == MAP_FAILED) |
405 | return NULL; |
406 | |
407 | return ret; |
408 | #else |
409 | void *tmp, *ret; |
410 | size_t preserve_size; |
411 | |
412 | preserve_size = oldsize; |
413 | if (preserve_size > newsize) |
414 | preserve_size = newsize; |
415 | tmp = malloc(preserve_size); |
416 | if (tmp == NULL) |
417 | return NULL; |
418 | memcpy(tmp, ptr, preserve_size); |
419 | |
420 | munmap(ptr, oldsize); |
421 | ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE, |
422 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
423 | if (ret == MAP_FAILED) { |
424 | free(tmp); |
425 | return NULL; |
426 | } |
427 | memcpy(ret, tmp, preserve_size); |
428 | free(tmp); |
429 | return ret; |
430 | #endif |
431 | } |
432 | |
433 | void plat_munmap(void *ptr, size_t size) |
434 | { |
435 | if (ptr != NULL) |
436 | munmap(ptr, size); |
437 | } |
438 | #endif |
439 | |
df925153 |
440 | // if NULL is returned, static buffer is used |
441 | void *plat_mem_get_for_drc(size_t size) |
442 | { |
443 | void *mem = NULL; |
444 | #ifdef VITA |
445 | sceKernelGetMemBlockBase(sceBlock, &mem); |
446 | #endif |
447 | return mem; |
448 | } |
449 | |
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450 | int plat_mem_set_exec(void *ptr, size_t size) |
451 | { |
df925153 |
452 | int ret = -1; |
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453 | #ifdef _WIN32 |
df925153 |
454 | ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, 0); |
7612bf90 |
455 | if (ret == 0 && log_cb) |
df925153 |
456 | log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size, |
457 | GetLastError()); |
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458 | #elif defined(_3DS) |
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459 | if (ctr_svchack_successful) |
460 | { |
461 | unsigned int currentHandle; |
462 | svcDuplicateHandle(¤tHandle, 0xFFFF8001); |
463 | ret = svcControlProcessMemory(currentHandle, ptr, 0x0, |
464 | size, MEMOP_PROT, 0b111); |
465 | svcCloseHandle(currentHandle); |
466 | ctr_flush_invalidate_cache(); |
467 | |
468 | } |
469 | else |
470 | { |
471 | if (log_cb) |
472 | log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n"); |
473 | exit(1); |
474 | } |
475 | |
476 | #elif defined(VITA) |
df925153 |
477 | ret = sceKernelOpenVMDomain(); |
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478 | #else |
df925153 |
479 | ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC); |
7612bf90 |
480 | if (ret != 0 && log_cb) |
481 | log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno); |
482 | #endif |
483 | return ret; |
484 | } |
485 | |
486 | void emu_video_mode_change(int start_line, int line_count, int is_32cols) |
487 | { |
24aab4da |
488 | struct retro_system_av_info av_info; |
489 | |
7612bf90 |
490 | memset(vout_buf, 0, 320 * 240 * 2); |
491 | vout_width = is_32cols ? 256 : 320; |
492 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
493 | if (show_overscan == true) line_count += 16; |
494 | if (show_overscan == true) start_line -= 8; |
495 | |
496 | vout_height = line_count; |
497 | vout_offset = vout_width * start_line; |
498 | |
499 | // Update the geometry |
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500 | retro_get_system_av_info(&av_info); |
501 | environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info); |
502 | } |
503 | |
504 | void emu_32x_startup(void) |
505 | { |
506 | } |
507 | |
508 | void lprintf(const char *fmt, ...) |
509 | { |
510 | char buffer[256]; |
511 | va_list ap; |
512 | va_start(ap, fmt); |
513 | vsprintf(buffer, fmt, ap); |
514 | /* TODO - add 'level' param for warning/error messages? */ |
515 | if (log_cb) |
516 | log_cb(RETRO_LOG_INFO, "%s", buffer); |
517 | va_end(ap); |
518 | } |
519 | |
520 | /* libretro */ |
521 | void retro_set_environment(retro_environment_t cb) |
522 | { |
523 | static const struct retro_variable vars[] = { |
524 | { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" }, |
525 | { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" }, |
526 | { "picodrive_sprlim", "No sprite limit; disabled|enabled" }, |
527 | { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" }, |
528 | { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" }, |
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529 | { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" }, |
530 | { "picodrive_overscan", "Show Overscan; disabled|enabled" }, |
35f2b65e |
531 | { "picodrive_overclk68k", "68k overclock; disabled|+25%|+50%|+75%|+100%|+200%|+400%" }, |
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532 | #ifdef DRC_SH2 |
533 | { "picodrive_drc", "Dynamic recompilers; enabled|disabled" }, |
534 | #endif |
535 | { NULL, NULL }, |
536 | }; |
537 | |
538 | environ_cb = cb; |
539 | |
540 | cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars); |
541 | } |
542 | |
543 | void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; } |
544 | void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; } |
545 | void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; } |
546 | void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; } |
547 | void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; } |
548 | |
549 | unsigned retro_api_version(void) |
550 | { |
551 | return RETRO_API_VERSION; |
552 | } |
553 | |
554 | void retro_set_controller_port_device(unsigned port, unsigned device) |
555 | { |
556 | } |
557 | |
558 | void retro_get_system_info(struct retro_system_info *info) |
559 | { |
560 | memset(info, 0, sizeof(*info)); |
561 | info->library_name = "PicoDrive"; |
562 | #ifndef GIT_VERSION |
563 | #define GIT_VERSION "" |
564 | #endif |
565 | info->library_version = VERSION GIT_VERSION; |
566 | info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms"; |
567 | info->need_fullpath = true; |
568 | } |
569 | |
570 | void retro_get_system_av_info(struct retro_system_av_info *info) |
571 | { |
24aab4da |
572 | float common_width; |
573 | |
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574 | memset(info, 0, sizeof(*info)); |
575 | info->timing.fps = Pico.m.pal ? 50 : 60; |
576 | info->timing.sample_rate = 44100; |
577 | info->geometry.base_width = vout_width; |
578 | info->geometry.base_height = vout_height; |
579 | info->geometry.max_width = vout_width; |
580 | info->geometry.max_height = vout_height; |
581 | |
24aab4da |
582 | common_width = vout_width; |
7612bf90 |
583 | if (user_vout_width != 0) |
584 | common_width = user_vout_width; |
585 | |
586 | info->geometry.aspect_ratio = common_width / vout_height; |
587 | } |
588 | |
589 | /* savestates */ |
590 | struct savestate_state { |
591 | const char *load_buf; |
592 | char *save_buf; |
593 | size_t size; |
594 | size_t pos; |
595 | }; |
596 | |
597 | size_t state_read(void *p, size_t size, size_t nmemb, void *file) |
598 | { |
599 | struct savestate_state *state = file; |
600 | size_t bsize = size * nmemb; |
601 | |
602 | if (state->pos + bsize > state->size) { |
603 | if (log_cb) |
604 | log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n", |
605 | state->pos + bsize, state->size); |
606 | bsize = state->size - state->pos; |
607 | if ((int)bsize <= 0) |
608 | return 0; |
609 | } |
610 | |
611 | memcpy(p, state->load_buf + state->pos, bsize); |
612 | state->pos += bsize; |
613 | return bsize; |
614 | } |
615 | |
616 | size_t state_write(void *p, size_t size, size_t nmemb, void *file) |
617 | { |
618 | struct savestate_state *state = file; |
619 | size_t bsize = size * nmemb; |
620 | |
621 | if (state->pos + bsize > state->size) { |
622 | if (log_cb) |
623 | log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n", |
624 | state->pos + bsize, state->size); |
625 | bsize = state->size - state->pos; |
626 | if ((int)bsize <= 0) |
627 | return 0; |
628 | } |
629 | |
630 | memcpy(state->save_buf + state->pos, p, bsize); |
631 | state->pos += bsize; |
632 | return bsize; |
633 | } |
634 | |
635 | size_t state_skip(void *p, size_t size, size_t nmemb, void *file) |
636 | { |
637 | struct savestate_state *state = file; |
638 | size_t bsize = size * nmemb; |
639 | |
640 | state->pos += bsize; |
641 | return bsize; |
642 | } |
643 | |
644 | size_t state_eof(void *file) |
645 | { |
646 | struct savestate_state *state = file; |
647 | |
648 | return state->pos >= state->size; |
649 | } |
650 | |
651 | int state_fseek(void *file, long offset, int whence) |
652 | { |
653 | struct savestate_state *state = file; |
654 | |
655 | switch (whence) { |
656 | case SEEK_SET: |
657 | state->pos = offset; |
658 | break; |
659 | case SEEK_CUR: |
660 | state->pos += offset; |
661 | break; |
662 | case SEEK_END: |
663 | state->pos = state->size + offset; |
664 | break; |
665 | } |
666 | return (int)state->pos; |
667 | } |
668 | |
669 | /* savestate sizes vary wildly depending if cd/32x or |
670 | * carthw is active, so run the whole thing to get size */ |
671 | size_t retro_serialize_size(void) |
672 | { |
673 | struct savestate_state state = { 0, }; |
674 | int ret; |
675 | |
676 | ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek); |
677 | if (ret != 0) |
678 | return 0; |
679 | |
680 | return state.pos; |
681 | } |
682 | |
683 | bool retro_serialize(void *data, size_t size) |
684 | { |
685 | struct savestate_state state = { 0, }; |
686 | int ret; |
687 | |
688 | state.save_buf = data; |
689 | state.size = size; |
690 | state.pos = 0; |
691 | |
692 | ret = PicoStateFP(&state, 1, NULL, state_write, |
693 | NULL, state_fseek); |
694 | return ret == 0; |
695 | } |
696 | |
697 | bool retro_unserialize(const void *data, size_t size) |
698 | { |
699 | struct savestate_state state = { 0, }; |
700 | int ret; |
701 | |
702 | state.load_buf = data; |
703 | state.size = size; |
704 | state.pos = 0; |
705 | |
706 | ret = PicoStateFP(&state, 0, state_read, NULL, |
707 | state_eof, state_fseek); |
708 | return ret == 0; |
709 | } |
710 | |
711 | typedef struct patch |
712 | { |
713 | unsigned int addr; |
714 | unsigned short data; |
715 | unsigned char comp; |
716 | } patch; |
717 | |
718 | extern void decode(char *buff, patch *dest); |
719 | extern uint16_t m68k_read16(uint32_t a); |
720 | extern void m68k_write16(uint32_t a, uint16_t d); |
721 | |
722 | void retro_cheat_reset(void) |
723 | { |
724 | int i=0; |
725 | unsigned int addr; |
726 | |
727 | for (i = 0; i < PicoPatchCount; i++) |
728 | { |
729 | addr = PicoPatches[i].addr; |
730 | if (addr < Pico.romsize) { |
731 | if (PicoPatches[i].active) |
732 | *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old; |
733 | } else { |
734 | if (PicoPatches[i].active) |
735 | m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old); |
736 | } |
737 | } |
738 | |
739 | PicoPatchUnload(); |
740 | } |
741 | |
742 | void retro_cheat_set(unsigned index, bool enabled, const char *code) |
743 | { |
744 | patch pt; |
745 | int array_len = PicoPatchCount; |
746 | char codeCopy[256]; |
747 | char *buff; |
748 | |
749 | if (code=='\0') return; |
750 | strcpy(codeCopy,code); |
751 | buff = strtok(codeCopy,"+"); |
752 | |
753 | while (buff != NULL) |
754 | { |
755 | decode(buff, &pt); |
756 | if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1) |
757 | { |
758 | log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff); |
759 | return; |
760 | } |
761 | |
762 | /* code was good, add it */ |
763 | if (array_len < PicoPatchCount + 1) |
764 | { |
765 | void *ptr; |
766 | array_len *= 2; |
767 | array_len++; |
768 | ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0])); |
769 | if (ptr == NULL) { |
770 | log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff); |
771 | return; |
772 | } |
773 | PicoPatches = ptr; |
774 | } |
775 | strcpy(PicoPatches[PicoPatchCount].code, buff); |
776 | |
777 | PicoPatches[PicoPatchCount].active = enabled; |
778 | PicoPatches[PicoPatchCount].addr = pt.addr; |
779 | PicoPatches[PicoPatchCount].data = pt.data; |
780 | PicoPatches[PicoPatchCount].comp = pt.comp; |
781 | if (PicoPatches[PicoPatchCount].addr < Pico.romsize) |
782 | PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr); |
783 | else |
784 | PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr); |
785 | PicoPatchCount++; |
786 | |
787 | buff = strtok(NULL,"+"); |
788 | } |
789 | } |
790 | |
791 | /* multidisk support */ |
792 | static bool disk_ejected; |
793 | static unsigned int disk_current_index; |
794 | static unsigned int disk_count; |
795 | static struct disks_state { |
796 | char *fname; |
797 | } disks[8]; |
798 | |
799 | static bool disk_set_eject_state(bool ejected) |
800 | { |
801 | // TODO? |
802 | disk_ejected = ejected; |
803 | return true; |
804 | } |
805 | |
806 | static bool disk_get_eject_state(void) |
807 | { |
808 | return disk_ejected; |
809 | } |
810 | |
811 | static unsigned int disk_get_image_index(void) |
812 | { |
813 | return disk_current_index; |
814 | } |
815 | |
816 | static bool disk_set_image_index(unsigned int index) |
817 | { |
818 | enum cd_img_type cd_type; |
819 | int ret; |
820 | |
821 | if (index >= sizeof(disks) / sizeof(disks[0])) |
822 | return false; |
823 | |
824 | if (disks[index].fname == NULL) { |
825 | if (log_cb) |
826 | log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index); |
827 | |
828 | // RetroArch specifies "no disk" with index == count, |
829 | // so don't fail here.. |
830 | disk_current_index = index; |
831 | return true; |
832 | } |
833 | |
834 | if (log_cb) |
835 | log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index, |
836 | disks[index].fname); |
837 | |
838 | ret = -1; |
839 | cd_type = PicoCdCheck(disks[index].fname, NULL); |
840 | if (cd_type != CIT_NOT_CD) |
841 | ret = cdd_load(disks[index].fname, cd_type); |
842 | if (ret != 0) { |
843 | if (log_cb) |
844 | log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n"); |
845 | return 0; |
846 | } |
847 | |
848 | disk_current_index = index; |
849 | return true; |
850 | } |
851 | |
852 | static unsigned int disk_get_num_images(void) |
853 | { |
854 | return disk_count; |
855 | } |
856 | |
857 | static bool disk_replace_image_index(unsigned index, |
858 | const struct retro_game_info *info) |
859 | { |
860 | bool ret = true; |
861 | |
862 | if (index >= sizeof(disks) / sizeof(disks[0])) |
863 | return false; |
864 | |
865 | if (disks[index].fname != NULL) |
866 | free(disks[index].fname); |
867 | disks[index].fname = NULL; |
868 | |
869 | if (info != NULL) { |
870 | disks[index].fname = strdup(info->path); |
871 | if (index == disk_current_index) |
872 | ret = disk_set_image_index(index); |
873 | } |
874 | |
875 | return ret; |
876 | } |
877 | |
878 | static bool disk_add_image_index(void) |
879 | { |
880 | if (disk_count >= sizeof(disks) / sizeof(disks[0])) |
881 | return false; |
882 | |
883 | disk_count++; |
884 | return true; |
885 | } |
886 | |
887 | static struct retro_disk_control_callback disk_control = { |
888 | disk_set_eject_state, |
889 | disk_get_eject_state, |
890 | disk_get_image_index, |
891 | disk_set_image_index, |
892 | disk_get_num_images, |
893 | disk_replace_image_index, |
894 | disk_add_image_index, |
895 | }; |
896 | |
897 | static void disk_tray_open(void) |
898 | { |
899 | if (log_cb) |
900 | log_cb(RETRO_LOG_INFO, "cd tray open\n"); |
901 | disk_ejected = 1; |
902 | } |
903 | |
904 | static void disk_tray_close(void) |
905 | { |
906 | if (log_cb) |
907 | log_cb(RETRO_LOG_INFO, "cd tray close\n"); |
908 | disk_ejected = 0; |
909 | } |
910 | |
911 | |
912 | static const char * const biosfiles_us[] = { |
913 | "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U" |
914 | }; |
915 | static const char * const biosfiles_eu[] = { |
916 | "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E" |
917 | }; |
918 | static const char * const biosfiles_jp[] = { |
919 | "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J" |
920 | }; |
921 | |
922 | static void make_system_path(char *buf, size_t buf_size, |
923 | const char *name, const char *ext) |
924 | { |
925 | const char *dir = NULL; |
926 | |
927 | if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) { |
928 | snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext); |
929 | } |
930 | else { |
931 | snprintf(buf, buf_size, "%s%s", name, ext); |
932 | } |
933 | } |
934 | |
935 | static const char *find_bios(int *region, const char *cd_fname) |
936 | { |
937 | const char * const *files; |
938 | static char path[256]; |
939 | int i, count; |
940 | FILE *f = NULL; |
941 | |
942 | if (*region == 4) { // US |
943 | files = biosfiles_us; |
944 | count = sizeof(biosfiles_us) / sizeof(char *); |
945 | } else if (*region == 8) { // EU |
946 | files = biosfiles_eu; |
947 | count = sizeof(biosfiles_eu) / sizeof(char *); |
948 | } else if (*region == 1 || *region == 2) { |
949 | files = biosfiles_jp; |
950 | count = sizeof(biosfiles_jp) / sizeof(char *); |
951 | } else { |
952 | return NULL; |
953 | } |
954 | |
955 | for (i = 0; i < count; i++) |
956 | { |
957 | make_system_path(path, sizeof(path), files[i], ".bin"); |
958 | f = fopen(path, "rb"); |
959 | if (f != NULL) |
960 | break; |
961 | |
962 | make_system_path(path, sizeof(path), files[i], ".zip"); |
963 | f = fopen(path, "rb"); |
964 | if (f != NULL) |
965 | break; |
966 | } |
967 | |
968 | if (f != NULL) { |
969 | if (log_cb) |
970 | log_cb(RETRO_LOG_INFO, "using bios: %s\n", path); |
971 | fclose(f); |
972 | return path; |
973 | } |
974 | |
975 | return NULL; |
976 | } |
977 | |
7612bf90 |
978 | bool retro_load_game(const struct retro_game_info *info) |
979 | { |
980 | enum media_type_e media_type; |
981 | static char carthw_path[256]; |
982 | size_t i; |
983 | |
984 | struct retro_input_descriptor desc[] = { |
985 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
986 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
987 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
988 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
989 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, |
990 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, |
991 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, |
992 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, |
993 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, |
994 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, |
995 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" }, |
996 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, |
997 | |
998 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
999 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
1000 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
1001 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
1002 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, |
1003 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, |
1004 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, |
1005 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, |
1006 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, |
1007 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, |
1008 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" }, |
1009 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, |
1010 | |
1011 | { 0 }, |
1012 | }; |
1013 | |
1014 | struct retro_input_descriptor desc_sms[] = { |
1015 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
1016 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
1017 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
1018 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
1019 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" }, |
1020 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" }, |
1021 | { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" }, |
1022 | |
1023 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, |
1024 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, |
1025 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, |
1026 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, |
1027 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" }, |
1028 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" }, |
1029 | { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" }, |
1030 | |
1031 | { 0 }, |
1032 | }; |
1033 | |
7612bf90 |
1034 | enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565; |
1035 | if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { |
1036 | if (log_cb) |
1037 | log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n"); |
1038 | return false; |
1039 | } |
1040 | |
1041 | if (info == NULL || info->path == NULL) { |
1042 | if (log_cb) |
1043 | log_cb(RETRO_LOG_ERROR, "info->path required\n"); |
1044 | return false; |
1045 | } |
1046 | |
1047 | for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) { |
1048 | if (disks[i].fname != NULL) { |
1049 | free(disks[i].fname); |
1050 | disks[i].fname = NULL; |
1051 | } |
1052 | } |
1053 | |
1054 | disk_current_index = 0; |
1055 | disk_count = 1; |
1056 | disks[0].fname = strdup(info->path); |
1057 | |
1058 | make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg"); |
1059 | |
1060 | media_type = PicoLoadMedia(info->path, carthw_path, |
1061 | find_bios, NULL); |
1062 | |
1063 | switch (media_type) { |
1064 | case PM_BAD_DETECT: |
1065 | if (log_cb) |
1066 | log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n"); |
1067 | return false; |
1068 | case PM_BAD_CD: |
1069 | if (log_cb) |
1070 | log_cb(RETRO_LOG_ERROR, "Invalid CD image\n"); |
1071 | return false; |
1072 | case PM_BAD_CD_NO_BIOS: |
1073 | if (log_cb) |
1074 | log_cb(RETRO_LOG_ERROR, "Missing BIOS\n"); |
1075 | return false; |
1076 | case PM_ERROR: |
1077 | if (log_cb) |
1078 | log_cb(RETRO_LOG_ERROR, "Load error\n"); |
1079 | return false; |
1080 | default: |
1081 | break; |
1082 | } |
1083 | |
1084 | if (media_type == PM_MARK3) |
1085 | environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms); |
1086 | else |
1087 | environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc); |
1088 | |
1089 | PicoLoopPrepare(); |
1090 | |
6311a3ba |
1091 | PicoIn.writeSound = snd_write; |
7612bf90 |
1092 | memset(sndBuffer, 0, sizeof(sndBuffer)); |
6311a3ba |
1093 | PicoIn.sndOut = sndBuffer; |
7612bf90 |
1094 | PsndRerate(0); |
1095 | |
1096 | return true; |
1097 | } |
1098 | |
1099 | bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info) |
1100 | { |
1101 | return false; |
1102 | } |
1103 | |
1104 | void retro_unload_game(void) |
1105 | { |
1106 | } |
1107 | |
1108 | unsigned retro_get_region(void) |
1109 | { |
1110 | return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC; |
1111 | } |
1112 | |
1113 | void *retro_get_memory_data(unsigned type) |
1114 | { |
1115 | uint8_t* data; |
1116 | |
1117 | switch(type) |
1118 | { |
1119 | case RETRO_MEMORY_SAVE_RAM: |
93f9619e |
1120 | if (PicoIn.AHW & PAHW_MCD) |
7612bf90 |
1121 | data = Pico_mcd->bram; |
1122 | else |
28a5b392 |
1123 | data = Pico.sv.data; |
7612bf90 |
1124 | break; |
1125 | case RETRO_MEMORY_SYSTEM_RAM: |
93f9619e |
1126 | if (PicoIn.AHW & PAHW_SMS) |
28a5b392 |
1127 | data = PicoMem.zram; |
7612bf90 |
1128 | else |
28a5b392 |
1129 | data = PicoMem.ram; |
7612bf90 |
1130 | break; |
1131 | default: |
1132 | data = NULL; |
1133 | break; |
1134 | } |
1135 | |
1136 | return data; |
1137 | } |
1138 | |
1139 | size_t retro_get_memory_size(unsigned type) |
1140 | { |
1141 | unsigned int i; |
1142 | int sum; |
1143 | |
1144 | switch(type) |
1145 | { |
1146 | case RETRO_MEMORY_SAVE_RAM: |
93f9619e |
1147 | if (PicoIn.AHW & PAHW_MCD) |
7612bf90 |
1148 | // bram |
1149 | return 0x2000; |
1150 | |
1151 | if (Pico.m.frame_count == 0) |
28a5b392 |
1152 | return Pico.sv.size; |
7612bf90 |
1153 | |
1154 | // if game doesn't write to sram, don't report it to |
1155 | // libretro so that RA doesn't write out zeroed .srm |
28a5b392 |
1156 | for (i = 0, sum = 0; i < Pico.sv.size; i++) |
1157 | sum |= Pico.sv.data[i]; |
7612bf90 |
1158 | |
28a5b392 |
1159 | return (sum != 0) ? Pico.sv.size : 0; |
7612bf90 |
1160 | |
1161 | case RETRO_MEMORY_SYSTEM_RAM: |
93f9619e |
1162 | if (PicoIn.AHW & PAHW_SMS) |
7612bf90 |
1163 | return 0x2000; |
1164 | else |
28a5b392 |
1165 | return sizeof(PicoMem.ram); |
7612bf90 |
1166 | |
1167 | default: |
1168 | return 0; |
1169 | } |
1170 | |
1171 | } |
1172 | |
1173 | void retro_reset(void) |
1174 | { |
1175 | PicoReset(); |
1176 | } |
1177 | |
1178 | static const unsigned short retro_pico_map[] = { |
1179 | 1 << GBTN_B, |
1180 | 1 << GBTN_A, |
1181 | 1 << GBTN_MODE, |
1182 | 1 << GBTN_START, |
1183 | 1 << GBTN_UP, |
1184 | 1 << GBTN_DOWN, |
1185 | 1 << GBTN_LEFT, |
1186 | 1 << GBTN_RIGHT, |
1187 | 1 << GBTN_C, |
1188 | 1 << GBTN_Y, |
1189 | 1 << GBTN_X, |
1190 | 1 << GBTN_Z, |
1191 | }; |
1192 | #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0])) |
1193 | |
1194 | static void snd_write(int len) |
1195 | { |
6311a3ba |
1196 | audio_batch_cb(PicoIn.sndOut, len / 4); |
7612bf90 |
1197 | } |
1198 | |
1199 | static enum input_device input_name_to_val(const char *name) |
1200 | { |
1201 | if (strcmp(name, "3 button pad") == 0) |
1202 | return PICO_INPUT_PAD_3BTN; |
1203 | if (strcmp(name, "6 button pad") == 0) |
1204 | return PICO_INPUT_PAD_6BTN; |
1205 | if (strcmp(name, "None") == 0) |
1206 | return PICO_INPUT_NOTHING; |
1207 | |
1208 | if (log_cb) |
1209 | log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name); |
1210 | return PICO_INPUT_PAD_3BTN; |
1211 | } |
1212 | |
1213 | static void update_variables(void) |
1214 | { |
1215 | struct retro_variable var; |
24aab4da |
1216 | int OldPicoRegionOverride; |
1217 | float old_user_vout_width; |
7612bf90 |
1218 | |
1219 | var.value = NULL; |
1220 | var.key = "picodrive_input1"; |
1221 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) |
1222 | PicoSetInputDevice(0, input_name_to_val(var.value)); |
1223 | |
1224 | var.value = NULL; |
1225 | var.key = "picodrive_input2"; |
1226 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) |
1227 | PicoSetInputDevice(1, input_name_to_val(var.value)); |
1228 | |
1229 | var.value = NULL; |
1230 | var.key = "picodrive_sprlim"; |
1231 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1232 | if (strcmp(var.value, "enabled") == 0) |
93f9619e |
1233 | PicoIn.opt |= POPT_DIS_SPRITE_LIM; |
7612bf90 |
1234 | else |
93f9619e |
1235 | PicoIn.opt &= ~POPT_DIS_SPRITE_LIM; |
7612bf90 |
1236 | } |
1237 | |
1238 | var.value = NULL; |
1239 | var.key = "picodrive_ramcart"; |
1240 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1241 | if (strcmp(var.value, "enabled") == 0) |
93f9619e |
1242 | PicoIn.opt |= POPT_EN_MCD_RAMCART; |
7612bf90 |
1243 | else |
93f9619e |
1244 | PicoIn.opt &= ~POPT_EN_MCD_RAMCART; |
7612bf90 |
1245 | } |
1246 | |
93f9619e |
1247 | OldPicoRegionOverride = PicoIn.regionOverride; |
7612bf90 |
1248 | var.value = NULL; |
1249 | var.key = "picodrive_region"; |
1250 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1251 | if (strcmp(var.value, "Auto") == 0) |
93f9619e |
1252 | PicoIn.regionOverride = 0; |
7612bf90 |
1253 | else if (strcmp(var.value, "Japan NTSC") == 0) |
93f9619e |
1254 | PicoIn.regionOverride = 1; |
7612bf90 |
1255 | else if (strcmp(var.value, "Japan PAL") == 0) |
93f9619e |
1256 | PicoIn.regionOverride = 2; |
7612bf90 |
1257 | else if (strcmp(var.value, "US") == 0) |
93f9619e |
1258 | PicoIn.regionOverride = 4; |
7612bf90 |
1259 | else if (strcmp(var.value, "Europe") == 0) |
93f9619e |
1260 | PicoIn.regionOverride = 8; |
7612bf90 |
1261 | } |
1262 | |
7612bf90 |
1263 | // Update region, fps and sound flags if needed |
93f9619e |
1264 | if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride) |
7612bf90 |
1265 | { |
1266 | PicoDetectRegion(); |
1267 | PicoLoopPrepare(); |
1268 | PsndRerate(1); |
1269 | } |
1270 | |
24aab4da |
1271 | old_user_vout_width = user_vout_width; |
7612bf90 |
1272 | var.value = NULL; |
1273 | var.key = "picodrive_aspect"; |
1274 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1275 | if (strcmp(var.value, "4/3") == 0) |
1276 | user_vout_width = VOUT_4_3; |
1277 | else if (strcmp(var.value, "CRT") == 0) |
1278 | user_vout_width = VOUT_CRT; |
1279 | else |
1280 | user_vout_width = VOUT_PAR; |
1281 | } |
1282 | |
1283 | var.value = NULL; |
1284 | var.key = "picodrive_overscan"; |
1285 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1286 | if (strcmp(var.value, "enabled") == 0) |
1287 | show_overscan = true; |
1288 | else |
1289 | show_overscan = false; |
1290 | } |
1291 | |
1292 | if (user_vout_width != old_user_vout_width) |
1293 | { |
1294 | // Update the geometry |
1295 | struct retro_system_av_info av_info; |
1296 | retro_get_system_av_info(&av_info); |
1297 | environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info); |
1298 | } |
1299 | |
35f2b65e |
1300 | var.value = NULL; |
1301 | var.key = "picodrive_overclk68k"; |
1302 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1303 | PicoIn.overclockM68k = 0; |
1304 | if (var.value[0] == '+') |
1305 | PicoIn.overclockM68k = atoi(var.value + 1); |
1306 | } |
1307 | |
7612bf90 |
1308 | #ifdef DRC_SH2 |
1309 | var.value = NULL; |
1310 | var.key = "picodrive_drc"; |
1311 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) { |
1312 | if (strcmp(var.value, "enabled") == 0) |
93f9619e |
1313 | PicoIn.opt |= POPT_EN_DRC; |
7612bf90 |
1314 | else |
93f9619e |
1315 | PicoIn.opt &= ~POPT_EN_DRC; |
7612bf90 |
1316 | } |
1317 | #endif |
1318 | #ifdef _3DS |
1319 | if(!ctr_svchack_successful) |
93f9619e |
1320 | PicoIn.opt &= ~POPT_EN_DRC; |
7612bf90 |
1321 | #endif |
1322 | } |
1323 | |
1324 | void retro_run(void) |
1325 | { |
1326 | bool updated = false; |
1327 | int pad, i; |
1328 | |
1329 | if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) |
1330 | update_variables(); |
1331 | |
1332 | input_poll_cb(); |
1333 | |
93f9619e |
1334 | PicoIn.pad[0] = PicoIn.pad[1] = 0; |
7612bf90 |
1335 | for (pad = 0; pad < 2; pad++) |
1336 | for (i = 0; i < RETRO_PICO_MAP_LEN; i++) |
1337 | if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i)) |
93f9619e |
1338 | PicoIn.pad[pad] |= retro_pico_map[i]; |
7612bf90 |
1339 | |
1340 | PicoPatchApply(); |
1341 | PicoFrame(); |
1342 | |
1343 | video_cb((short *)vout_buf + vout_offset, |
1344 | vout_width, vout_height, vout_width * 2); |
1345 | } |
1346 | |
7612bf90 |
1347 | void retro_init(void) |
1348 | { |
1349 | struct retro_log_callback log; |
1350 | int level; |
1351 | |
1352 | level = 0; |
1353 | environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level); |
1354 | |
1355 | if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log)) |
1356 | log_cb = log.log; |
1357 | else |
1358 | log_cb = NULL; |
1359 | |
1360 | environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control); |
1361 | |
1362 | #ifdef _3DS |
1363 | ctr_svchack_successful = ctr_svchack_init(); |
1364 | #elif defined(VITA) |
1365 | sceBlock = getVMBlock(); |
1366 | #endif |
1367 | |
93f9619e |
1368 | PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |
7612bf90 |
1369 | | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX |
1370 | | POPT_EN_32X|POPT_EN_PWM |
1371 | | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER; |
1372 | #ifdef __arm__ |
1373 | #ifdef _3DS |
1374 | if (ctr_svchack_successful) |
1375 | #endif |
93f9619e |
1376 | PicoIn.opt |= POPT_EN_DRC; |
7612bf90 |
1377 | #endif |
6311a3ba |
1378 | PicoIn.sndRate = 44100; |
93f9619e |
1379 | PicoIn.autoRgnOrder = 0x184; // US, EU, JP |
7612bf90 |
1380 | |
1381 | vout_width = 320; |
1382 | vout_height = 240; |
1383 | #ifdef _3DS |
1384 | vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80); |
1385 | #else |
1386 | vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2); |
1387 | #endif |
1388 | |
1389 | PicoInit(); |
1390 | PicoDrawSetOutFormat(PDF_RGB555, 0); |
1391 | PicoDrawSetOutBuf(vout_buf, vout_width * 2); |
1392 | |
6311a3ba |
1393 | //PicoIn.osdMessage = plat_status_msg_busy_next; |
1394 | PicoIn.mcdTrayOpen = disk_tray_open; |
1395 | PicoIn.mcdTrayClose = disk_tray_close; |
7612bf90 |
1396 | |
1397 | update_variables(); |
1398 | } |
1399 | |
1400 | void retro_deinit(void) |
1401 | { |
1402 | #ifdef _3DS |
1403 | linearFree(vout_buf); |
1404 | #else |
1405 | free(vout_buf); |
1406 | #endif |
1407 | vout_buf = NULL; |
1408 | PicoExit(); |
1409 | } |
df925153 |
1410 | |
1411 | // vim:shiftwidth=3:ts=3:expandtab |