libretro.c 35 KB

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