libretro.c 53 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152215231524152515261527152815291530153115321533153415351536153715381539154015411542154315441545154615471548154915501551155215531554155515561557155815591560156115621563156415651566156715681569157015711572157315741575157615771578157915801581158215831584158515861587158815891590159115921593159415951596159715981599160016011602160316041605160616071608160916101611161216131614161516161617161816191620162116221623162416251626162716281629163016311632163316341635163616371638163916401641164216431644164516461647164816491650165116521653165416551656165716581659166016611662166316641665166616671668166916701671167216731674167516761677167816791680168116821683168416851686168716881689169016911692169316941695169616971698169917001701170217031704170517061707170817091710171117121713171417151716171717181719172017211722172317241725172617271728172917301731173217331734173517361737173817391740174117421743174417451746174717481749175017511752175317541755175617571758175917601761176217631764176517661767176817691770177117721773177417751776177717781779178017811782178317841785178617871788178917901791179217931794179517961797179817991800180118021803180418051806180718081809181018111812181318141815181618171818181918201821182218231824182518261827182818291830183118321833183418351836183718381839184018411842184318441845184618471848184918501851185218531854185518561857185818591860186118621863186418651866186718681869187018711872187318741875187618771878187918801881188218831884188518861887188818891890189118921893189418951896189718981899190019011902190319041905190619071908190919101911191219131914191519161917191819191920192119221923192419251926192719281929193019311932193319341935193619371938193919401941194219431944194519461947
  1. /*
  2. * libretro core glue for PicoDrive
  3. * (C) notaz, 2013
  4. * (C) aliaspider, 2016
  5. * (C) Daniel De Matteis, 2013
  6. * (C) kub, 2020
  7. *
  8. * This work is licensed under the terms of MAME license.
  9. * See COPYING file in the top-level directory.
  10. */
  11. #define _GNU_SOURCE 1 // mremap
  12. #include <stdio.h>
  13. #include <stdlib.h>
  14. #include <stdarg.h>
  15. #include <string.h>
  16. #ifndef _WIN32
  17. #ifndef NO_MMAP
  18. #ifdef __SWITCH__
  19. #include "switch/mman.h"
  20. #else
  21. #include <sys/mman.h>
  22. #endif
  23. #endif
  24. #else
  25. #include <io.h>
  26. #include <windows.h>
  27. #include <sys/types.h>
  28. #endif
  29. #include <errno.h>
  30. #ifdef __MACH__
  31. #include <libkern/OSCacheControl.h>
  32. #endif
  33. #ifdef USE_LIBRETRO_VFS
  34. #include "file_stream_transforms.h"
  35. #endif
  36. #if defined(RENDER_GSKIT_PS2)
  37. #include <malloc.h>
  38. #include "libretro-common/include/libretro_gskit_ps2.h"
  39. #include "ps2/asm.h"
  40. #else
  41. #include <platform/common/upscale.h>
  42. #endif
  43. #ifdef _3DS
  44. #include "3ds/3ds_utils.h"
  45. #define MEMOP_MAP 4
  46. #define MEMOP_UNMAP 5
  47. #define MEMOP_PROT 6
  48. int svcDuplicateHandle(unsigned int* out, unsigned int original);
  49. int svcCloseHandle(unsigned int handle);
  50. int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
  51. unsigned int size, unsigned int type, unsigned int perm);
  52. void* linearMemAlign(size_t size, size_t alignment);
  53. void linearFree(void* mem);
  54. static int ctr_svchack_successful = 0;
  55. #elif defined(VITA)
  56. #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
  57. #include <psp2/kernel/sysmem.h>
  58. static int sceBlock;
  59. int getVMBlock();
  60. int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
  61. #endif
  62. #include "libretro_core_options.h"
  63. #include <pico/pico_int.h>
  64. #include <pico/state.h>
  65. #include <pico/patch.h>
  66. #include <pico/sound/mix.h>
  67. #include "../common/input_pico.h"
  68. #include "../common/version.h"
  69. #include <libretro.h>
  70. static retro_log_printf_t log_cb;
  71. static retro_video_refresh_t video_cb;
  72. static retro_input_poll_t input_poll_cb;
  73. static retro_input_state_t input_state_cb;
  74. static retro_environment_t environ_cb;
  75. static retro_audio_sample_batch_t audio_batch_cb;
  76. #define VOUT_MAX_WIDTH 320
  77. #define VOUT_MAX_HEIGHT 240
  78. #define INITIAL_SND_RATE 44100
  79. static const float VOUT_PAR = 0.0;
  80. static const float VOUT_4_3 = (4.0f / 3.0f);
  81. static const float VOUT_CRT = (1.29911f);
  82. /* Required to allow on the fly changes to 'renderer' */
  83. static int vm_current_start_line = -1;
  84. static int vm_current_line_count = -1;
  85. static int vm_current_start_col = -1;
  86. static int vm_current_col_count = -1;
  87. static int vout_16bit = 1;
  88. static int vout_format = PDF_RGB555;
  89. static void *vout_buf, *vout_ghosting_buf;
  90. static int vout_width, vout_height, vout_offset;
  91. static float vout_aspect = 0.0;
  92. static int vout_ghosting = 0;
  93. #if defined(RENDER_GSKIT_PS2)
  94. #define VOUT_8BIT_WIDTH 328
  95. #define VOUT_8BIT_HEIGHT 256
  96. RETRO_HW_RENDER_INTEFACE_GSKIT_PS2 *ps2 = NULL;
  97. static void *retro_palette;
  98. static struct retro_hw_ps2_insets padding;
  99. #endif
  100. static short ALIGNED(4) sndBuffer[2*INITIAL_SND_RATE/50];
  101. static void snd_write(int len);
  102. char **g_argv;
  103. #ifdef _WIN32
  104. #define SLASH '\\'
  105. #else
  106. #define SLASH '/'
  107. #endif
  108. /* Frameskipping Support */
  109. static unsigned frameskip_type = 0;
  110. static unsigned frameskip_threshold = 0;
  111. static uint16_t frameskip_counter = 0;
  112. static bool retro_audio_buff_active = false;
  113. static unsigned retro_audio_buff_occupancy = 0;
  114. static bool retro_audio_buff_underrun = false;
  115. /* Maximum number of consecutive frames that
  116. * can be skipped */
  117. #define FRAMESKIP_MAX 60
  118. static unsigned audio_latency = 0;
  119. static bool update_audio_latency = false;
  120. static void retro_audio_buff_status_cb(
  121. bool active, unsigned occupancy, bool underrun_likely)
  122. {
  123. retro_audio_buff_active = active;
  124. retro_audio_buff_occupancy = occupancy;
  125. retro_audio_buff_underrun = underrun_likely;
  126. }
  127. static void init_frameskip(void)
  128. {
  129. if (frameskip_type > 0)
  130. {
  131. struct retro_audio_buffer_status_callback buf_status_cb;
  132. buf_status_cb.callback = retro_audio_buff_status_cb;
  133. if (!environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK,
  134. &buf_status_cb))
  135. {
  136. if (log_cb)
  137. log_cb(RETRO_LOG_WARN, "Frameskip disabled - frontend does not support audio buffer status monitoring.\n");
  138. retro_audio_buff_active = false;
  139. retro_audio_buff_occupancy = 0;
  140. retro_audio_buff_underrun = false;
  141. audio_latency = 0;
  142. }
  143. else
  144. {
  145. /* Frameskip is enabled - increase frontend
  146. * audio latency to minimise potential
  147. * buffer underruns */
  148. float frame_time_msec = 1000.0f / (Pico.m.pal ? 50.0f : 60.0f);
  149. /* Set latency to 6x current frame time... */
  150. audio_latency = (unsigned)((6.0f * frame_time_msec) + 0.5f);
  151. /* ...then round up to nearest multiple of 32 */
  152. audio_latency = (audio_latency + 0x1F) & ~0x1F;
  153. }
  154. }
  155. else
  156. {
  157. environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK, NULL);
  158. audio_latency = 0;
  159. }
  160. update_audio_latency = true;
  161. }
  162. /* functions called by the core */
  163. void cache_flush_d_inval_i(void *start, void *end)
  164. {
  165. #ifdef __arm__
  166. size_t len = (char *)end - (char *)start;
  167. (void)len;
  168. #if defined(__BLACKBERRY_QNX__)
  169. msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
  170. #elif defined(__MACH__)
  171. sys_dcache_flush(start, len);
  172. sys_icache_invalidate(start, len);
  173. #elif defined(_3DS)
  174. ctr_flush_invalidate_cache();
  175. #elif defined(VITA)
  176. sceKernelSyncVMDomain(sceBlock, start, len);
  177. #else
  178. __clear_cache(start, end);
  179. #endif
  180. #endif
  181. }
  182. #ifdef RENDER_GSKIT_PS2
  183. /* ee-gcc is version 3.2, where these aren't yet defined */
  184. void __builtin___clear_cache(void *b, void *e)
  185. {
  186. #if 0 /* which of these is overall faster for lots of small cache updates? */
  187. SyncDCache(b, e);
  188. #else
  189. FlushCache(0); /* WRITEBACK_DCACHE */
  190. #endif
  191. FlushCache(2); /* INVALIDATE_ICACHE */
  192. }
  193. int __builtin_parity(unsigned v)
  194. {
  195. /* credits to bit twiddling hacks, https://graphics.stanford.edu/~seander/bithacks.html */
  196. v ^= v >> 16;
  197. v ^= v >> 8;
  198. v ^= v >> 4;
  199. return (0x6996 >> (v&0xf)) & 1;
  200. }
  201. #endif
  202. #ifdef __MACH__
  203. /* calls to this may be generated by the compiler, but it's missing in libc? */
  204. void __clear_cache(void *start, void *end)
  205. {
  206. size_t len = (char *)end - (char *)start;
  207. sys_dcache_flush(start, len);
  208. sys_icache_invalidate(start, len);
  209. }
  210. #endif
  211. #ifdef _WIN32
  212. /* mmap() replacement for Windows
  213. *
  214. * Author: Mike Frysinger <vapier@gentoo.org>
  215. * Placed into the public domain
  216. */
  217. /* References:
  218. * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
  219. * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
  220. * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
  221. * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
  222. */
  223. #define PROT_READ 0x1
  224. #define PROT_WRITE 0x2
  225. /* This flag is only available in WinXP+ */
  226. #ifdef FILE_MAP_EXECUTE
  227. #define PROT_EXEC 0x4
  228. #else
  229. #define PROT_EXEC 0x0
  230. #define FILE_MAP_EXECUTE 0
  231. #endif
  232. #define MAP_SHARED 0x01
  233. #define MAP_PRIVATE 0x02
  234. #define MAP_ANONYMOUS 0x20
  235. #define MAP_ANON MAP_ANONYMOUS
  236. #define MAP_FAILED ((void *) -1)
  237. #ifdef __USE_FILE_OFFSET64
  238. # define DWORD_HI(x) (x >> 32)
  239. # define DWORD_LO(x) ((x) & 0xffffffff)
  240. #else
  241. # define DWORD_HI(x) (0)
  242. # define DWORD_LO(x) (x)
  243. #endif
  244. static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
  245. {
  246. uint32_t flProtect, dwDesiredAccess;
  247. off_t end;
  248. HANDLE mmap_fd, h;
  249. void *ret;
  250. if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
  251. return MAP_FAILED;
  252. if (fd == -1) {
  253. if (!(flags & MAP_ANON) || offset)
  254. return MAP_FAILED;
  255. } else if (flags & MAP_ANON)
  256. return MAP_FAILED;
  257. if (prot & PROT_WRITE) {
  258. if (prot & PROT_EXEC)
  259. flProtect = PAGE_EXECUTE_READWRITE;
  260. else
  261. flProtect = PAGE_READWRITE;
  262. } else if (prot & PROT_EXEC) {
  263. if (prot & PROT_READ)
  264. flProtect = PAGE_EXECUTE_READ;
  265. else if (prot & PROT_EXEC)
  266. flProtect = PAGE_EXECUTE;
  267. } else
  268. flProtect = PAGE_READONLY;
  269. end = length + offset;
  270. if (fd == -1)
  271. mmap_fd = INVALID_HANDLE_VALUE;
  272. else
  273. mmap_fd = (HANDLE)_get_osfhandle(fd);
  274. h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
  275. if (h == NULL)
  276. return MAP_FAILED;
  277. if (prot & PROT_WRITE)
  278. dwDesiredAccess = FILE_MAP_WRITE;
  279. else
  280. dwDesiredAccess = FILE_MAP_READ;
  281. if (prot & PROT_EXEC)
  282. dwDesiredAccess |= FILE_MAP_EXECUTE;
  283. if (flags & MAP_PRIVATE)
  284. dwDesiredAccess |= FILE_MAP_COPY;
  285. ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
  286. if (ret == NULL) {
  287. CloseHandle(h);
  288. ret = MAP_FAILED;
  289. }
  290. return ret;
  291. }
  292. static void munmap(void *addr, size_t length)
  293. {
  294. UnmapViewOfFile(addr);
  295. /* ruh-ro, we leaked handle from CreateFileMapping() ... */
  296. }
  297. #elif defined(NO_MMAP)
  298. #define PROT_EXEC 0x04
  299. #define MAP_FAILED 0
  300. #define PROT_READ 0
  301. #define PROT_WRITE 0
  302. #define MAP_PRIVATE 0
  303. #define MAP_ANONYMOUS 0
  304. void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
  305. {
  306. return calloc(1, len);
  307. }
  308. void munmap(void *base_addr, size_t len)
  309. {
  310. free(base_addr);
  311. }
  312. int mprotect(void *addr, size_t len, int prot)
  313. {
  314. /* stub - not really needed at this point since this codepath has no dynarecs */
  315. return 0;
  316. }
  317. #endif
  318. #ifndef MAP_ANONYMOUS
  319. #define MAP_ANONYMOUS MAP_ANON
  320. #endif
  321. #ifdef _3DS
  322. typedef struct
  323. {
  324. unsigned int requested_map;
  325. void* buffer;
  326. }pico_mmap_t;
  327. pico_mmap_t pico_mmaps[] = {
  328. {0x02000000, 0},
  329. {0x06000000, 0},
  330. {NULL, 0}
  331. };
  332. void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
  333. {
  334. (void)is_fixed;
  335. if (ctr_svchack_successful)
  336. {
  337. pico_mmap_t* pico_mmap;
  338. for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
  339. {
  340. if ((pico_mmap->requested_map == addr))
  341. {
  342. unsigned int ptr_aligned, tmp;
  343. unsigned int currentHandle;
  344. unsigned int perm = 0b011;
  345. if (need_exec)
  346. perm = 0b111;
  347. size = (size + 0xFFF) & ~0xFFF;
  348. pico_mmap->buffer = malloc(size + 0x1000);
  349. ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
  350. svcDuplicateHandle(&currentHandle, 0xFFFF8001);
  351. if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
  352. {
  353. if (log_cb)
  354. log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
  355. exit(1);
  356. }
  357. svcCloseHandle(currentHandle);
  358. return (void*)pico_mmap->requested_map;
  359. }
  360. }
  361. }
  362. return malloc(size);
  363. }
  364. void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
  365. {
  366. if (ctr_svchack_successful)
  367. {
  368. pico_mmap_t* pico_mmap;
  369. for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
  370. {
  371. if ((pico_mmap->requested_map == (unsigned int)ptr))
  372. {
  373. unsigned int ptr_aligned;
  374. unsigned int currentHandle;
  375. void* tmp;
  376. oldsize = (oldsize + 0xFFF) & ~0xFFF;
  377. newsize = (newsize + 0xFFF) & ~0xFFF;
  378. ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
  379. svcDuplicateHandle(&currentHandle, 0xFFFF8001);
  380. svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
  381. tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
  382. if(!tmp)
  383. return NULL;
  384. pico_mmap->buffer = tmp;
  385. ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
  386. svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
  387. svcCloseHandle(currentHandle);
  388. return ptr;
  389. }
  390. }
  391. }
  392. return realloc(ptr, newsize);
  393. }
  394. void plat_munmap(void *ptr, size_t size)
  395. {
  396. if (ctr_svchack_successful)
  397. {
  398. pico_mmap_t* pico_mmap;
  399. for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
  400. {
  401. if ((pico_mmap->requested_map == (unsigned int)ptr))
  402. {
  403. unsigned int ptr_aligned;
  404. unsigned int currentHandle;
  405. size = (size + 0xFFF) & ~0xFFF;
  406. ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
  407. svcDuplicateHandle(&currentHandle, 0xFFFF8001);
  408. svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
  409. svcCloseHandle(currentHandle);
  410. free(pico_mmap->buffer);
  411. pico_mmap->buffer = NULL;
  412. return;
  413. }
  414. }
  415. }
  416. free(ptr);
  417. }
  418. #else
  419. void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
  420. {
  421. int flags = MAP_PRIVATE | MAP_ANONYMOUS;
  422. void *req, *ret;
  423. req = (void *)(uintptr_t)addr;
  424. ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
  425. if (ret == MAP_FAILED) {
  426. if (log_cb)
  427. log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
  428. return NULL;
  429. }
  430. if (addr != 0 && ret != (void *)(uintptr_t)addr) {
  431. if (log_cb)
  432. log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
  433. addr, ret);
  434. if (is_fixed) {
  435. munmap(ret, size);
  436. return NULL;
  437. }
  438. }
  439. return ret;
  440. }
  441. void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
  442. {
  443. #if defined(__linux__) && !defined(__SWITCH__)
  444. void *ret = mremap(ptr, oldsize, newsize, 0);
  445. if (ret == MAP_FAILED)
  446. return NULL;
  447. return ret;
  448. #else
  449. void *tmp, *ret;
  450. size_t preserve_size;
  451. preserve_size = oldsize;
  452. if (preserve_size > newsize)
  453. preserve_size = newsize;
  454. tmp = malloc(preserve_size);
  455. if (tmp == NULL)
  456. return NULL;
  457. memcpy(tmp, ptr, preserve_size);
  458. munmap(ptr, oldsize);
  459. ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
  460. MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  461. if (ret == MAP_FAILED) {
  462. free(tmp);
  463. return NULL;
  464. }
  465. memcpy(ret, tmp, preserve_size);
  466. free(tmp);
  467. return ret;
  468. #endif
  469. }
  470. void plat_munmap(void *ptr, size_t size)
  471. {
  472. if (ptr != NULL)
  473. munmap(ptr, size);
  474. }
  475. #endif
  476. // if NULL is returned, static buffer is used
  477. void *plat_mem_get_for_drc(size_t size)
  478. {
  479. void *mem = NULL;
  480. #if defined VITA
  481. sceKernelGetMemBlockBase(sceBlock, &mem);
  482. #elif defined HW_WUP
  483. // For WiiU, a slice of RWX memory left from the exploit is used, see:
  484. // https://github.com/embercold/pcsx_rearmed/commit/af0453223
  485. mem = (void *)(0x01000000 - size);
  486. #endif
  487. return mem;
  488. }
  489. int plat_mem_set_exec(void *ptr, size_t size)
  490. {
  491. int ret = -1;
  492. #ifdef _WIN32
  493. DWORD oldProtect = 0;
  494. ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, &oldProtect);
  495. if (ret == 0 && log_cb)
  496. log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
  497. GetLastError());
  498. #elif defined(_3DS)
  499. if (ctr_svchack_successful)
  500. {
  501. unsigned int currentHandle;
  502. svcDuplicateHandle(&currentHandle, 0xFFFF8001);
  503. ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
  504. size, MEMOP_PROT, 0b111);
  505. svcCloseHandle(currentHandle);
  506. ctr_flush_invalidate_cache();
  507. }
  508. else
  509. {
  510. if (log_cb)
  511. log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
  512. exit(1);
  513. }
  514. #elif defined(VITA)
  515. ret = sceKernelOpenVMDomain();
  516. #else
  517. ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
  518. if (ret != 0 && log_cb)
  519. log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
  520. #endif
  521. return ret;
  522. }
  523. void emu_video_mode_change(int start_line, int line_count, int start_col, int col_count)
  524. {
  525. struct retro_system_av_info av_info;
  526. vm_current_start_line = start_line;
  527. vm_current_line_count = line_count;
  528. vm_current_start_col = start_col;
  529. vm_current_col_count = col_count;
  530. // 8bit renderes create a 328x256 CLUT image, while 16bit creates 320x240 RGB
  531. vout_16bit = vout_format == PDF_RGB555 || (PicoIn.AHW & PAHW_32X);
  532. #if defined(RENDER_GSKIT_PS2)
  533. // calculate the borders of the real image inside the picodrive image
  534. vout_width = (vout_16bit ? VOUT_MAX_WIDTH : VOUT_8BIT_WIDTH);
  535. vout_height = (vout_16bit ? VOUT_MAX_HEIGHT : VOUT_8BIT_HEIGHT);
  536. vout_offset = (vout_16bit ? 0 : 8); // 8bit has 8 px overlap area on the left
  537. padding = (struct retro_hw_ps2_insets){start_line, vout_offset, vout_height - line_count - start_line, vout_width - col_count - vout_offset};
  538. int pxsz = (vout_16bit ? 2 : 1); // pixel size: RGB = 16 bits, CLUT = 8 bits
  539. memset(vout_buf, 0, pxsz * vout_width * vout_height);
  540. memset(retro_palette, 0, gsKit_texture_size_ee(16, 16, GS_PSM_CT16));
  541. PicoDrawSetOutBuf(vout_buf, pxsz * vout_width);
  542. if (ps2) {
  543. // prepare image as texture for rendering
  544. ps2->coreTexture->Width = vout_width;
  545. ps2->coreTexture->Height = vout_height;
  546. ps2->coreTexture->PSM = (vout_16bit ? GS_PSM_CT16 : GS_PSM_T8);
  547. ps2->padding = padding;
  548. }
  549. #else
  550. vout_width = col_count;
  551. memset(vout_buf, 0, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
  552. if (vout_16bit)
  553. PicoDrawSetOutBuf(vout_buf, vout_width * 2);
  554. vout_height = line_count;
  555. /* Note: We multiply by 2 here to account for pitch */
  556. vout_offset = vout_width * start_line * 2;
  557. /* Redundant sanity check... */
  558. vout_height = (vout_height > VOUT_MAX_HEIGHT) ?
  559. VOUT_MAX_HEIGHT : vout_height;
  560. vout_offset = (vout_offset > vout_width * (VOUT_MAX_HEIGHT - 1) * 2) ?
  561. vout_width * (VOUT_MAX_HEIGHT - 1) * 2 : vout_offset;
  562. /* LCD ghosting */
  563. if (vout_ghosting && vout_height == 144) {
  564. vout_ghosting_buf = realloc(vout_ghosting_buf, VOUT_MAX_HEIGHT*vout_width*2);
  565. memset(vout_ghosting_buf, 0, vout_width*vout_height*2);
  566. }
  567. #endif
  568. Pico.m.dirtyPal = 1;
  569. // Update the geometry
  570. retro_get_system_av_info(&av_info);
  571. environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
  572. }
  573. void emu_32x_startup(void)
  574. {
  575. PicoDrawSetOutFormat(vout_format, 0);
  576. if ((vm_current_start_line != -1) &&
  577. (vm_current_line_count != -1) &&
  578. (vm_current_start_col != -1) &&
  579. (vm_current_col_count != -1))
  580. emu_video_mode_change(
  581. vm_current_start_line, vm_current_line_count,
  582. vm_current_start_col, vm_current_col_count);
  583. }
  584. void lprintf(const char *fmt, ...)
  585. {
  586. char buffer[256];
  587. va_list ap;
  588. va_start(ap, fmt);
  589. vsprintf(buffer, fmt, ap);
  590. /* TODO - add 'level' param for warning/error messages? */
  591. if (log_cb)
  592. log_cb(RETRO_LOG_INFO, "%s", buffer);
  593. va_end(ap);
  594. }
  595. /* libretro */
  596. bool libretro_supports_bitmasks = false;
  597. void retro_set_environment(retro_environment_t cb)
  598. {
  599. #ifdef USE_LIBRETRO_VFS
  600. struct retro_vfs_interface_info vfs_iface_info;
  601. #endif
  602. environ_cb = cb;
  603. libretro_set_core_options(environ_cb);
  604. #ifdef USE_LIBRETRO_VFS
  605. vfs_iface_info.required_interface_version = 1;
  606. vfs_iface_info.iface = NULL;
  607. if (environ_cb(RETRO_ENVIRONMENT_GET_VFS_INTERFACE, &vfs_iface_info))
  608. filestream_vfs_init(&vfs_iface_info);
  609. #endif
  610. }
  611. void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
  612. void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
  613. void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
  614. void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
  615. void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
  616. unsigned retro_api_version(void)
  617. {
  618. return RETRO_API_VERSION;
  619. }
  620. void retro_set_controller_port_device(unsigned port, unsigned device)
  621. {
  622. }
  623. void retro_get_system_info(struct retro_system_info *info)
  624. {
  625. memset(info, 0, sizeof(*info));
  626. info->library_name = "PicoDrive";
  627. #ifndef GIT_VERSION
  628. #define _GIT_VERSION ""
  629. #else
  630. #define _GIT_VERSION "-" GIT_VERSION
  631. #endif
  632. info->library_version = VERSION _GIT_VERSION;
  633. info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|chd|sms|gg";
  634. info->need_fullpath = true;
  635. }
  636. void retro_get_system_av_info(struct retro_system_av_info *info)
  637. {
  638. float tv_height = (vout_height > 144 ? Pico.m.pal ? 240 : 224 : 144);
  639. float common_width;
  640. memset(info, 0, sizeof(*info));
  641. info->timing.fps = Pico.m.pal ? 50 : 60;
  642. info->timing.sample_rate = PicoIn.sndRate;
  643. info->geometry.base_width = vout_width;
  644. info->geometry.base_height = vout_height;
  645. info->geometry.max_width = vout_width;
  646. info->geometry.max_height = vout_height;
  647. common_width = vout_width;
  648. if (vout_aspect != 0)
  649. common_width = vout_aspect * tv_height;
  650. info->geometry.aspect_ratio = common_width / vout_height;
  651. }
  652. /* savestates */
  653. struct savestate_state {
  654. const char *load_buf;
  655. char *save_buf;
  656. size_t size;
  657. size_t pos;
  658. };
  659. size_t state_read(void *p, size_t size, size_t nmemb, void *file)
  660. {
  661. struct savestate_state *state = file;
  662. size_t bsize = size * nmemb;
  663. if (state->pos + bsize > state->size) {
  664. if (log_cb)
  665. log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
  666. state->pos + bsize, state->size);
  667. bsize = state->size - state->pos;
  668. if ((int)bsize <= 0)
  669. return 0;
  670. }
  671. memcpy(p, state->load_buf + state->pos, bsize);
  672. state->pos += bsize;
  673. return bsize;
  674. }
  675. size_t state_write(void *p, size_t size, size_t nmemb, void *file)
  676. {
  677. struct savestate_state *state = file;
  678. size_t bsize = size * nmemb;
  679. if (state->pos + bsize > state->size) {
  680. if (log_cb)
  681. log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
  682. state->pos + bsize, state->size);
  683. bsize = state->size - state->pos;
  684. if ((int)bsize <= 0)
  685. return 0;
  686. }
  687. memcpy(state->save_buf + state->pos, p, bsize);
  688. state->pos += bsize;
  689. return bsize;
  690. }
  691. size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
  692. {
  693. struct savestate_state *state = file;
  694. size_t bsize = size * nmemb;
  695. state->pos += bsize;
  696. return bsize;
  697. }
  698. size_t state_eof(void *file)
  699. {
  700. struct savestate_state *state = file;
  701. return state->pos >= state->size;
  702. }
  703. int state_fseek(void *file, long offset, int whence)
  704. {
  705. struct savestate_state *state = file;
  706. switch (whence) {
  707. case SEEK_SET:
  708. state->pos = offset;
  709. break;
  710. case SEEK_CUR:
  711. state->pos += offset;
  712. break;
  713. case SEEK_END:
  714. state->pos = state->size + offset;
  715. break;
  716. }
  717. return (int)state->pos;
  718. }
  719. /* savestate sizes vary wildly depending if cd/32x or
  720. * carthw is active, so run the whole thing to get size */
  721. size_t retro_serialize_size(void)
  722. {
  723. struct savestate_state state = { 0, };
  724. int ret;
  725. ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
  726. if (ret != 0)
  727. return 0;
  728. return state.pos;
  729. }
  730. bool retro_serialize(void *data, size_t size)
  731. {
  732. struct savestate_state state = { 0, };
  733. int ret;
  734. state.save_buf = data;
  735. state.size = size;
  736. state.pos = 0;
  737. ret = PicoStateFP(&state, 1, NULL, state_write,
  738. NULL, state_fseek);
  739. return ret == 0;
  740. }
  741. bool retro_unserialize(const void *data, size_t size)
  742. {
  743. struct savestate_state state = { 0, };
  744. int ret;
  745. state.load_buf = data;
  746. state.size = size;
  747. state.pos = 0;
  748. ret = PicoStateFP(&state, 0, state_read, NULL,
  749. state_eof, state_fseek);
  750. return ret == 0;
  751. }
  752. typedef struct patch
  753. {
  754. unsigned int addr;
  755. unsigned short data;
  756. unsigned char comp;
  757. } patch;
  758. extern void decode(char *buff, patch *dest);
  759. extern uint32_t m68k_read16(uint32_t a);
  760. extern void m68k_write16(uint32_t a, uint16_t d);
  761. void retro_cheat_reset(void)
  762. {
  763. int i=0;
  764. unsigned int addr;
  765. for (i = 0; i < PicoPatchCount; i++)
  766. {
  767. addr = PicoPatches[i].addr;
  768. if (addr < Pico.romsize) {
  769. if (PicoPatches[i].active)
  770. *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
  771. } else {
  772. if (PicoPatches[i].active)
  773. m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
  774. }
  775. }
  776. PicoPatchUnload();
  777. }
  778. void retro_cheat_set(unsigned index, bool enabled, const char *code)
  779. {
  780. patch pt;
  781. int array_len = PicoPatchCount;
  782. char codeCopy[256];
  783. char *buff;
  784. if (*code == '\0')
  785. return;
  786. strcpy(codeCopy, code);
  787. buff = strtok(codeCopy,"+");
  788. while (buff != NULL)
  789. {
  790. decode(buff, &pt);
  791. if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
  792. {
  793. log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
  794. return;
  795. }
  796. /* code was good, add it */
  797. if (array_len < PicoPatchCount + 1)
  798. {
  799. void *ptr;
  800. array_len *= 2;
  801. array_len++;
  802. ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
  803. if (ptr == NULL) {
  804. log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
  805. return;
  806. }
  807. PicoPatches = ptr;
  808. }
  809. strcpy(PicoPatches[PicoPatchCount].code, buff);
  810. PicoPatches[PicoPatchCount].active = enabled;
  811. PicoPatches[PicoPatchCount].addr = pt.addr;
  812. PicoPatches[PicoPatchCount].data = pt.data;
  813. PicoPatches[PicoPatchCount].comp = pt.comp;
  814. if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
  815. PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
  816. else
  817. PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
  818. PicoPatchCount++;
  819. buff = strtok(NULL,"+");
  820. }
  821. }
  822. /* multidisk support */
  823. static bool disk_ejected;
  824. static unsigned int disk_current_index;
  825. static unsigned int disk_count;
  826. static struct disks_state {
  827. char *fname;
  828. } disks[8];
  829. static bool disk_set_eject_state(bool ejected)
  830. {
  831. // TODO?
  832. disk_ejected = ejected;
  833. return true;
  834. }
  835. static bool disk_get_eject_state(void)
  836. {
  837. return disk_ejected;
  838. }
  839. static unsigned int disk_get_image_index(void)
  840. {
  841. return disk_current_index;
  842. }
  843. static bool disk_set_image_index(unsigned int index)
  844. {
  845. enum cd_track_type cd_type;
  846. int ret;
  847. if (index >= sizeof(disks) / sizeof(disks[0]))
  848. return false;
  849. if (disks[index].fname == NULL) {
  850. if (log_cb)
  851. log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
  852. // RetroArch specifies "no disk" with index == count,
  853. // so don't fail here..
  854. disk_current_index = index;
  855. return true;
  856. }
  857. if (log_cb)
  858. log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
  859. disks[index].fname);
  860. ret = -1;
  861. cd_type = PicoCdCheck(disks[index].fname, NULL);
  862. if (cd_type >= 0 && cd_type != CT_UNKNOWN)
  863. ret = cdd_load(disks[index].fname, cd_type);
  864. if (ret != 0) {
  865. if (log_cb)
  866. log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
  867. return 0;
  868. }
  869. disk_current_index = index;
  870. return true;
  871. }
  872. static unsigned int disk_get_num_images(void)
  873. {
  874. return disk_count;
  875. }
  876. static bool disk_replace_image_index(unsigned index,
  877. const struct retro_game_info *info)
  878. {
  879. bool ret = true;
  880. if (index >= sizeof(disks) / sizeof(disks[0]))
  881. return false;
  882. if (disks[index].fname != NULL)
  883. free(disks[index].fname);
  884. disks[index].fname = NULL;
  885. if (info != NULL) {
  886. disks[index].fname = strdup(info->path);
  887. if (index == disk_current_index)
  888. ret = disk_set_image_index(index);
  889. }
  890. return ret;
  891. }
  892. static bool disk_add_image_index(void)
  893. {
  894. if (disk_count >= sizeof(disks) / sizeof(disks[0]))
  895. return false;
  896. disk_count++;
  897. return true;
  898. }
  899. static struct retro_disk_control_callback disk_control = {
  900. disk_set_eject_state,
  901. disk_get_eject_state,
  902. disk_get_image_index,
  903. disk_set_image_index,
  904. disk_get_num_images,
  905. disk_replace_image_index,
  906. disk_add_image_index,
  907. };
  908. static void disk_tray_open(void)
  909. {
  910. if (log_cb)
  911. log_cb(RETRO_LOG_INFO, "cd tray open\n");
  912. disk_ejected = 1;
  913. }
  914. static void disk_tray_close(void)
  915. {
  916. if (log_cb)
  917. log_cb(RETRO_LOG_INFO, "cd tray close\n");
  918. disk_ejected = 0;
  919. }
  920. static const char * const biosfiles_us[] = {
  921. "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
  922. };
  923. static const char * const biosfiles_eu[] = {
  924. "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
  925. };
  926. static const char * const biosfiles_jp[] = {
  927. "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
  928. };
  929. static void make_system_path(char *buf, size_t buf_size,
  930. const char *name, const char *ext)
  931. {
  932. const char *dir = NULL;
  933. if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
  934. snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
  935. }
  936. else {
  937. snprintf(buf, buf_size, "%s%s", name, ext);
  938. }
  939. }
  940. static const char *find_bios(int *region, const char *cd_fname)
  941. {
  942. const char * const *files;
  943. static char path[256];
  944. int i, count;
  945. FILE *f = NULL;
  946. if (*region == 4) { // US
  947. files = biosfiles_us;
  948. count = sizeof(biosfiles_us) / sizeof(char *);
  949. } else if (*region == 8) { // EU
  950. files = biosfiles_eu;
  951. count = sizeof(biosfiles_eu) / sizeof(char *);
  952. } else if (*region == 1 || *region == 2) {
  953. files = biosfiles_jp;
  954. count = sizeof(biosfiles_jp) / sizeof(char *);
  955. } else {
  956. return NULL;
  957. }
  958. for (i = 0; i < count; i++)
  959. {
  960. make_system_path(path, sizeof(path), files[i], ".bin");
  961. f = fopen(path, "rb");
  962. if (f != NULL)
  963. break;
  964. make_system_path(path, sizeof(path), files[i], ".zip");
  965. f = fopen(path, "rb");
  966. if (f != NULL)
  967. break;
  968. }
  969. if (f != NULL) {
  970. if (log_cb)
  971. log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
  972. fclose(f);
  973. return path;
  974. }
  975. return NULL;
  976. }
  977. static void set_memory_maps(void)
  978. {
  979. if (PicoIn.AHW & PAHW_MCD)
  980. {
  981. const size_t SCD_BIT = 1ULL << 31ULL;
  982. const uint64_t mem = RETRO_MEMDESC_SYSTEM_RAM;
  983. struct retro_memory_map mmaps;
  984. struct retro_memory_descriptor descs[] = {
  985. { mem, PicoMem.ram, 0, 0xFF0000, 0, 0, 0x10000, "68KRAM" },
  986. /* virtual address using SCD_BIT so all 512M of prg_ram can be accessed */
  987. /* at address $80020000 */
  988. { mem, Pico_mcd->prg_ram, 0, SCD_BIT | 0x020000, 0, 0, 0x80000, "PRGRAM" },
  989. };
  990. mmaps.descriptors = descs;
  991. mmaps.num_descriptors = sizeof(descs) / sizeof(descs[0]);
  992. environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps);
  993. }
  994. }
  995. bool retro_load_game(const struct retro_game_info *info)
  996. {
  997. enum media_type_e media_type;
  998. static char carthw_path[256];
  999. size_t i;
  1000. struct retro_input_descriptor desc[] = {
  1001. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1002. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1003. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1004. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1005. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
  1006. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
  1007. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
  1008. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
  1009. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
  1010. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
  1011. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
  1012. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
  1013. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1014. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1015. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1016. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1017. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
  1018. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
  1019. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
  1020. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
  1021. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
  1022. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
  1023. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
  1024. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
  1025. { 0 },
  1026. };
  1027. struct retro_input_descriptor desc_sms[] = {
  1028. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1029. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1030. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1031. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1032. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
  1033. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
  1034. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
  1035. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1036. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1037. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1038. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1039. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
  1040. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
  1041. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
  1042. { 0 },
  1043. };
  1044. enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
  1045. if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
  1046. if (log_cb)
  1047. log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
  1048. return false;
  1049. }
  1050. if (info == NULL || info->path == NULL) {
  1051. if (log_cb)
  1052. log_cb(RETRO_LOG_ERROR, "info->path required\n");
  1053. return false;
  1054. }
  1055. for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
  1056. if (disks[i].fname != NULL) {
  1057. free(disks[i].fname);
  1058. disks[i].fname = NULL;
  1059. }
  1060. }
  1061. disk_current_index = 0;
  1062. disk_count = 1;
  1063. disks[0].fname = strdup(info->path);
  1064. make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
  1065. media_type = PicoLoadMedia(info->path, carthw_path,
  1066. find_bios, NULL);
  1067. switch (media_type) {
  1068. case PM_BAD_DETECT:
  1069. if (log_cb)
  1070. log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
  1071. return false;
  1072. case PM_BAD_CD:
  1073. if (log_cb)
  1074. log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
  1075. return false;
  1076. case PM_BAD_CD_NO_BIOS:
  1077. if (log_cb)
  1078. log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
  1079. return false;
  1080. case PM_ERROR:
  1081. if (log_cb)
  1082. log_cb(RETRO_LOG_ERROR, "Load error\n");
  1083. return false;
  1084. default:
  1085. break;
  1086. }
  1087. if (media_type == PM_MARK3)
  1088. environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
  1089. else
  1090. environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
  1091. PicoLoopPrepare();
  1092. PicoIn.writeSound = snd_write;
  1093. memset(sndBuffer, 0, sizeof(sndBuffer));
  1094. PicoIn.sndOut = sndBuffer;
  1095. PsndRerate(0);
  1096. PicoDrawSetOutFormat(vout_format, 0);
  1097. if (vout_format == PDF_8BIT)
  1098. PicoDrawSetOutBuf(Pico.est.Draw2FB, 328);
  1099. /* Setup retro memory maps */
  1100. set_memory_maps();
  1101. init_frameskip();
  1102. return true;
  1103. }
  1104. bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
  1105. {
  1106. return false;
  1107. }
  1108. void retro_unload_game(void)
  1109. {
  1110. }
  1111. unsigned retro_get_region(void)
  1112. {
  1113. return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
  1114. }
  1115. void *retro_get_memory_data(unsigned type)
  1116. {
  1117. uint8_t* data;
  1118. switch(type)
  1119. {
  1120. case RETRO_MEMORY_SAVE_RAM:
  1121. /* Note: MCD RAM cart uses Pico.sv.data */
  1122. if ((PicoIn.AHW & PAHW_MCD) &&
  1123. !(PicoIn.opt & POPT_EN_MCD_RAMCART))
  1124. data = Pico_mcd->bram;
  1125. else
  1126. data = Pico.sv.data;
  1127. break;
  1128. case RETRO_MEMORY_SYSTEM_RAM:
  1129. if (PicoIn.AHW & PAHW_SMS)
  1130. data = PicoMem.zram;
  1131. else
  1132. data = PicoMem.ram;
  1133. break;
  1134. default:
  1135. data = NULL;
  1136. break;
  1137. }
  1138. return data;
  1139. }
  1140. size_t retro_get_memory_size(unsigned type)
  1141. {
  1142. unsigned int i;
  1143. int sum;
  1144. switch(type)
  1145. {
  1146. case RETRO_MEMORY_SAVE_RAM:
  1147. if (PicoIn.AHW & PAHW_MCD)
  1148. {
  1149. if (PicoIn.opt & POPT_EN_MCD_RAMCART)
  1150. return 0x12000;
  1151. else /* bram */
  1152. return 0x2000;
  1153. }
  1154. if (Pico.m.frame_count == 0)
  1155. return Pico.sv.size;
  1156. // if game doesn't write to sram, don't report it to
  1157. // libretro so that RA doesn't write out zeroed .srm
  1158. for (i = 0, sum = 0; i < Pico.sv.size; i++)
  1159. sum |= Pico.sv.data[i];
  1160. return (sum != 0) ? Pico.sv.size : 0;
  1161. case RETRO_MEMORY_SYSTEM_RAM:
  1162. if (PicoIn.AHW & PAHW_SMS)
  1163. return 0x2000;
  1164. else
  1165. return sizeof(PicoMem.ram);
  1166. default:
  1167. return 0;
  1168. }
  1169. }
  1170. void retro_reset(void)
  1171. {
  1172. PicoReset();
  1173. }
  1174. static const unsigned short retro_pico_map[] = {
  1175. [RETRO_DEVICE_ID_JOYPAD_B] = 1 << GBTN_B,
  1176. [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << GBTN_A,
  1177. [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << GBTN_MODE,
  1178. [RETRO_DEVICE_ID_JOYPAD_START] = 1 << GBTN_START,
  1179. [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << GBTN_UP,
  1180. [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << GBTN_DOWN,
  1181. [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << GBTN_LEFT,
  1182. [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << GBTN_RIGHT,
  1183. [RETRO_DEVICE_ID_JOYPAD_A] = 1 << GBTN_C,
  1184. [RETRO_DEVICE_ID_JOYPAD_X] = 1 << GBTN_Y,
  1185. [RETRO_DEVICE_ID_JOYPAD_L] = 1 << GBTN_X,
  1186. [RETRO_DEVICE_ID_JOYPAD_R] = 1 << GBTN_Z,
  1187. };
  1188. #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
  1189. static void snd_write(int len)
  1190. {
  1191. audio_batch_cb(PicoIn.sndOut, len / 4);
  1192. }
  1193. static enum input_device input_name_to_val(const char *name)
  1194. {
  1195. if (strcmp(name, "3 button pad") == 0)
  1196. return PICO_INPUT_PAD_3BTN;
  1197. if (strcmp(name, "6 button pad") == 0)
  1198. return PICO_INPUT_PAD_6BTN;
  1199. if (strcmp(name, "None") == 0)
  1200. return PICO_INPUT_NOTHING;
  1201. if (log_cb)
  1202. log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
  1203. return PICO_INPUT_PAD_3BTN;
  1204. }
  1205. static void update_variables(bool first_run)
  1206. {
  1207. struct retro_variable var;
  1208. int OldPicoRegionOverride;
  1209. float old_vout_aspect;
  1210. unsigned old_frameskip_type;
  1211. int old_vout_format;
  1212. double new_sound_rate;
  1213. unsigned short old_snd_filter;
  1214. int32_t old_snd_filter_range;
  1215. var.value = NULL;
  1216. var.key = "picodrive_input1";
  1217. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1218. PicoSetInputDevice(0, input_name_to_val(var.value));
  1219. var.value = NULL;
  1220. var.key = "picodrive_input2";
  1221. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1222. PicoSetInputDevice(1, input_name_to_val(var.value));
  1223. var.value = NULL;
  1224. var.key = "picodrive_ramcart";
  1225. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1226. if (strcmp(var.value, "enabled") == 0)
  1227. PicoIn.opt |= POPT_EN_MCD_RAMCART;
  1228. else
  1229. PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
  1230. }
  1231. var.value = NULL;
  1232. var.key = "picodrive_smstype";
  1233. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1234. if (strcmp(var.value, "Auto") == 0)
  1235. PicoIn.hwSelect = PHWS_AUTO;
  1236. else if (strcmp(var.value, "Game Gear") == 0)
  1237. PicoIn.hwSelect = PHWS_GG;
  1238. else
  1239. PicoIn.hwSelect = PHWS_SMS;
  1240. }
  1241. var.value = NULL;
  1242. var.key = "picodrive_smsfm";
  1243. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1244. if (strcmp(var.value, "on") == 0)
  1245. PicoIn.opt |= POPT_EN_YM2413;
  1246. else
  1247. PicoIn.opt &= ~POPT_EN_YM2413;
  1248. }
  1249. var.value = NULL;
  1250. var.key = "picodrive_smsmapper";
  1251. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1252. if (strcmp(var.value, "Auto") == 0)
  1253. PicoIn.hwSelect = PMS_MAP_AUTO;
  1254. else if (strcmp(var.value, "Codemasters") == 0)
  1255. PicoIn.hwSelect = PMS_MAP_CODEM;
  1256. else if (strcmp(var.value, "Korea") == 0)
  1257. PicoIn.hwSelect = PMS_MAP_KOREA;
  1258. else if (strcmp(var.value, "Korea MSX") == 0)
  1259. PicoIn.hwSelect = PMS_MAP_MSX;
  1260. else if (strcmp(var.value, "Korea X-in-1") == 0)
  1261. PicoIn.hwSelect = PMS_MAP_N32K;
  1262. else if (strcmp(var.value, "Korea 4-Pak") == 0)
  1263. PicoIn.hwSelect = PMS_MAP_N16K;
  1264. else if (strcmp(var.value, "Korea Janggun") == 0)
  1265. PicoIn.hwSelect = PMS_MAP_JANGGUN;
  1266. else if (strcmp(var.value, "Korea Nemesis") == 0)
  1267. PicoIn.hwSelect = PMS_MAP_NEMESIS;
  1268. else
  1269. PicoIn.hwSelect = PMS_MAP_SEGA;
  1270. }
  1271. var.value = NULL;
  1272. var.key = "picodrive_ggghost";
  1273. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1274. if (strcmp(var.value, "normal") == 0)
  1275. vout_ghosting = 2;
  1276. else if (strcmp(var.value, "weak") == 0)
  1277. vout_ghosting = 1;
  1278. else
  1279. vout_ghosting = 0;
  1280. }
  1281. OldPicoRegionOverride = PicoIn.regionOverride;
  1282. var.value = NULL;
  1283. var.key = "picodrive_region";
  1284. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1285. if (strcmp(var.value, "Auto") == 0)
  1286. PicoIn.regionOverride = 0;
  1287. else if (strcmp(var.value, "Japan NTSC") == 0)
  1288. PicoIn.regionOverride = 1;
  1289. else if (strcmp(var.value, "Japan PAL") == 0)
  1290. PicoIn.regionOverride = 2;
  1291. else if (strcmp(var.value, "US") == 0)
  1292. PicoIn.regionOverride = 4;
  1293. else if (strcmp(var.value, "Europe") == 0)
  1294. PicoIn.regionOverride = 8;
  1295. }
  1296. // Update region, fps and sound flags if needed
  1297. if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
  1298. {
  1299. PicoDetectRegion();
  1300. PicoLoopPrepare();
  1301. PsndRerate(1);
  1302. }
  1303. old_vout_aspect = vout_aspect;
  1304. var.value = NULL;
  1305. var.key = "picodrive_aspect";
  1306. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1307. if (strcmp(var.value, "4/3") == 0)
  1308. vout_aspect = VOUT_4_3;
  1309. else if (strcmp(var.value, "CRT") == 0)
  1310. vout_aspect = VOUT_CRT;
  1311. else
  1312. vout_aspect = VOUT_PAR;
  1313. }
  1314. if (vout_aspect != old_vout_aspect)
  1315. {
  1316. // Update the geometry
  1317. struct retro_system_av_info av_info;
  1318. retro_get_system_av_info(&av_info);
  1319. environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
  1320. }
  1321. var.value = NULL;
  1322. var.key = "picodrive_sprlim";
  1323. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1324. if (strcmp(var.value, "enabled") == 0)
  1325. PicoIn.opt |= POPT_DIS_SPRITE_LIM;
  1326. else
  1327. PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
  1328. }
  1329. var.value = NULL;
  1330. var.key = "picodrive_overclk68k";
  1331. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1332. PicoIn.overclockM68k = 0;
  1333. if (var.value[0] == '+')
  1334. PicoIn.overclockM68k = atoi(var.value + 1);
  1335. }
  1336. #ifdef DRC_SH2
  1337. var.value = NULL;
  1338. var.key = "picodrive_drc";
  1339. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1340. if (strcmp(var.value, "enabled") == 0)
  1341. PicoIn.opt |= POPT_EN_DRC;
  1342. else
  1343. PicoIn.opt &= ~POPT_EN_DRC;
  1344. }
  1345. #endif
  1346. #ifdef _3DS
  1347. if(!ctr_svchack_successful)
  1348. PicoIn.opt &= ~POPT_EN_DRC;
  1349. #endif
  1350. old_snd_filter = PicoIn.opt & POPT_EN_SNDFILTER;
  1351. var.value = NULL;
  1352. var.key = "picodrive_audio_filter";
  1353. PicoIn.opt &= ~POPT_EN_SNDFILTER;
  1354. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1355. if (strcmp(var.value, "low-pass") == 0)
  1356. PicoIn.opt |= POPT_EN_SNDFILTER;
  1357. }
  1358. old_snd_filter_range = PicoIn.sndFilterAlpha;
  1359. var.value = NULL;
  1360. var.key = "picodrive_lowpass_range";
  1361. PicoIn.sndFilterAlpha = (60 * 0x10000 / 100);
  1362. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1363. PicoIn.sndFilterAlpha = (atoi(var.value) * 0x10000 / 100);
  1364. }
  1365. if (((old_snd_filter ^ PicoIn.opt) & POPT_EN_SNDFILTER) ||
  1366. old_snd_filter_range != PicoIn.sndFilterAlpha) {
  1367. mix_reset (PicoIn.opt & POPT_EN_SNDFILTER ? PicoIn.sndFilterAlpha : 0);
  1368. }
  1369. old_frameskip_type = frameskip_type;
  1370. frameskip_type = 0;
  1371. var.key = "picodrive_frameskip";
  1372. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1373. if (strcmp(var.value, "auto") == 0)
  1374. frameskip_type = 1;
  1375. else if (strcmp(var.value, "manual") == 0)
  1376. frameskip_type = 2;
  1377. }
  1378. frameskip_threshold = 33;
  1379. var.key = "picodrive_frameskip_threshold";
  1380. var.value = NULL;
  1381. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1382. frameskip_threshold = strtol(var.value, NULL, 10);
  1383. old_vout_format = vout_format;
  1384. var.value = NULL;
  1385. var.key = "picodrive_renderer";
  1386. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1387. if (strcmp(var.value, "fast") == 0)
  1388. vout_format = PDF_NONE;
  1389. else if (strcmp(var.value, "good") == 0)
  1390. vout_format = PDF_8BIT;
  1391. else if (strcmp(var.value, "accurate") == 0)
  1392. vout_format = PDF_RGB555;
  1393. PicoIn.opt &= ~POPT_ALT_RENDERER;
  1394. if (vout_format == PDF_NONE)
  1395. PicoIn.opt |= POPT_ALT_RENDERER;
  1396. PicoDrawSetOutFormat(vout_format, 0);
  1397. if (vout_format == PDF_8BIT)
  1398. PicoDrawSetOutBuf(Pico.est.Draw2FB, 328);
  1399. }
  1400. var.value = NULL;
  1401. var.key = "picodrive_sound_rate";
  1402. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1403. new_sound_rate = atoi(var.value);
  1404. if (new_sound_rate != PicoIn.sndRate) {
  1405. /* Update the sound rate */
  1406. PicoIn.sndRate = new_sound_rate;
  1407. PsndRerate(1);
  1408. struct retro_system_av_info av_info;
  1409. retro_get_system_av_info(&av_info);
  1410. environ_cb(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &av_info);
  1411. }
  1412. }
  1413. /* setup video if required */
  1414. if (vout_format != old_vout_format)
  1415. {
  1416. if ((vm_current_start_line != -1) &&
  1417. (vm_current_line_count != -1) &&
  1418. (vm_current_start_col != -1) &&
  1419. (vm_current_col_count != -1))
  1420. emu_video_mode_change(
  1421. vm_current_start_line, vm_current_line_count,
  1422. vm_current_start_col, vm_current_col_count);
  1423. }
  1424. /* Reinitialise frameskipping, if required */
  1425. if (((frameskip_type != old_frameskip_type) ||
  1426. (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)) &&
  1427. !first_run)
  1428. init_frameskip();
  1429. }
  1430. void retro_run(void)
  1431. {
  1432. bool updated = false;
  1433. int pad, i;
  1434. static void *buff;
  1435. int16_t input;
  1436. PicoIn.skipFrame = 0;
  1437. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
  1438. update_variables(false);
  1439. input_poll_cb();
  1440. PicoIn.pad[0] = PicoIn.pad[1] = 0;
  1441. for (pad = 0; pad < 2; pad++) {
  1442. if (libretro_supports_bitmasks) {
  1443. input = input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK);
  1444. for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
  1445. if (input & (1 << i))
  1446. PicoIn.pad[pad] |= retro_pico_map[i];
  1447. } else {
  1448. for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
  1449. if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
  1450. PicoIn.pad[pad] |= retro_pico_map[i];
  1451. }
  1452. }
  1453. if (PicoPatches)
  1454. PicoPatchApply();
  1455. /* Check whether current frame should
  1456. * be skipped */
  1457. if ((frameskip_type > 0) && retro_audio_buff_active) {
  1458. switch (frameskip_type)
  1459. {
  1460. case 1: /* auto */
  1461. PicoIn.skipFrame = retro_audio_buff_underrun ? 1 : 0;
  1462. break;
  1463. case 2: /* manual */
  1464. PicoIn.skipFrame = (retro_audio_buff_occupancy < frameskip_threshold) ? 1 : 0;
  1465. break;
  1466. default:
  1467. PicoIn.skipFrame = 0;
  1468. break;
  1469. }
  1470. if (!PicoIn.skipFrame || (frameskip_counter >= FRAMESKIP_MAX)) {
  1471. PicoIn.skipFrame = 0;
  1472. frameskip_counter = 0;
  1473. } else
  1474. frameskip_counter++;
  1475. }
  1476. /* If frameskip settings have changed, update
  1477. * frontend audio latency */
  1478. if (update_audio_latency) {
  1479. environ_cb(RETRO_ENVIRONMENT_SET_MINIMUM_AUDIO_LATENCY,
  1480. &audio_latency);
  1481. update_audio_latency = false;
  1482. }
  1483. PicoFrame();
  1484. /* If frame was skipped, call video_cb() with
  1485. * a NULL buffer and return immediately */
  1486. if (PicoIn.skipFrame) {
  1487. video_cb(NULL, vout_width, vout_height, vout_width * 2);
  1488. return;
  1489. }
  1490. #if defined(RENDER_GSKIT_PS2)
  1491. buff = (uint32_t *)RETRO_HW_FRAME_BUFFER_VALID;
  1492. if (!ps2) {
  1493. // get access to the graphics hardware
  1494. if (!environ_cb(RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE, (void **)&ps2) || !ps2) {
  1495. printf("Failed to get HW rendering interface!\n");
  1496. return;
  1497. }
  1498. if (ps2->interface_version != RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION) {
  1499. printf("HW render interface mismatch, expected %u, got %u!\n",
  1500. RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION, ps2->interface_version);
  1501. return;
  1502. }
  1503. ps2->coreTexture->ClutPSM = GS_PSM_CT16;
  1504. ps2->coreTexture->Filter = GS_FILTER_LINEAR;
  1505. ps2->coreTexture->Clut = retro_palette;
  1506. ps2->coreTexture->Mem = vout_buf;
  1507. ps2->coreTexture->Width = vout_width;
  1508. ps2->coreTexture->Height = vout_height;
  1509. ps2->coreTexture->PSM = (vout_16bit ? GS_PSM_CT16 : GS_PSM_T8);
  1510. ps2->padding = padding;
  1511. }
  1512. // CLUT update needed?
  1513. if (!vout_16bit && Pico.m.dirtyPal) {
  1514. PicoDrawUpdateHighPal();
  1515. // Rotate CLUT. PS2 is special since entries in CLUT are not in sequence.
  1516. unsigned short int *pal=(void *)retro_palette;
  1517. for (i = 0; i < 256; i+=8) {
  1518. if ((i&0x18) == 0x08)
  1519. memcpy(pal+i,Pico.est.HighPal+i+8,16);
  1520. else if ((i&0x18) == 0x10)
  1521. memcpy(pal+i,Pico.est.HighPal+i-8,16);
  1522. else
  1523. memcpy(pal+i,Pico.est.HighPal+i,16);
  1524. }
  1525. }
  1526. #else
  1527. if (!vout_16bit) {
  1528. /* The 8 bit renderers write a CLUT image in Pico.est.Draw2FB, while libretro wants RGB in vout_buf.
  1529. * We need to manually copy that to vout_buf, applying the CLUT on the way. Especially
  1530. * with the fast renderer this is improving performance, at the expense of accuracy.
  1531. */
  1532. /* This section is mostly copied from pemu_finalize_frame in platform/linux/emu.c */
  1533. unsigned short *pd = (unsigned short *)((char *)vout_buf + vout_offset);
  1534. /* Skip the leftmost 8 columns (it is used as an overlap area for rendering) */
  1535. unsigned char *ps = Pico.est.Draw2FB + vm_current_start_line * 328 + 8;
  1536. unsigned short *pal = Pico.est.HighPal;
  1537. int x;
  1538. if (Pico.m.dirtyPal)
  1539. PicoDrawUpdateHighPal();
  1540. /* Copy, and skip the leftmost 8 columns again */
  1541. for (i = 0; i < vout_height; i++, ps += 8) {
  1542. for (x = 0; x < vout_width; x+=4) {
  1543. *pd++ = pal[*ps++];
  1544. *pd++ = pal[*ps++];
  1545. *pd++ = pal[*ps++];
  1546. *pd++ = pal[*ps++];
  1547. }
  1548. ps += 320-vout_width; /* Advance to next line in case of 32col mode */
  1549. }
  1550. }
  1551. if (vout_ghosting && vout_height == 144) {
  1552. unsigned short *pd = (unsigned short *)vout_buf;
  1553. unsigned short *ps = (unsigned short *)vout_ghosting_buf;
  1554. int y;
  1555. for (y = 0; y < vout_height; y++) {
  1556. if (vout_ghosting == 1)
  1557. v_blend(pd, ps, vout_width, p_075_round);
  1558. else
  1559. v_blend(pd, ps, vout_width, p_05_round);
  1560. pd += vout_width;
  1561. ps += vout_width;
  1562. }
  1563. }
  1564. buff = (char*)vout_buf + vout_offset;
  1565. #endif
  1566. video_cb((short *)buff,
  1567. vout_width, vout_height, vout_width * 2);
  1568. }
  1569. void retro_init(void)
  1570. {
  1571. struct retro_log_callback log;
  1572. int level;
  1573. level = 0;
  1574. environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
  1575. if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
  1576. log_cb = log.log;
  1577. else
  1578. log_cb = NULL;
  1579. environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
  1580. if (environ_cb(RETRO_ENVIRONMENT_GET_INPUT_BITMASKS, NULL))
  1581. libretro_supports_bitmasks = true;
  1582. #ifdef _3DS
  1583. ctr_svchack_successful = ctr_svchack_init();
  1584. check_rosalina();
  1585. #elif defined(VITA)
  1586. sceBlock = getVMBlock();
  1587. #endif
  1588. PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM
  1589. | POPT_EN_PSG|POPT_EN_Z80|POPT_EN_GG_LCD
  1590. | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
  1591. | POPT_EN_32X|POPT_EN_PWM
  1592. | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
  1593. #ifdef __arm__
  1594. #ifdef _3DS
  1595. if (ctr_svchack_successful)
  1596. #endif
  1597. PicoIn.opt |= POPT_EN_DRC;
  1598. #endif
  1599. struct retro_variable var = { .key = "picodrive_sound_rate" };
  1600. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1601. PicoIn.sndRate = atoi(var.value);
  1602. else
  1603. PicoIn.sndRate = INITIAL_SND_RATE;
  1604. PicoIn.autoRgnOrder = 0x184; // US, EU, JP
  1605. vout_width = VOUT_MAX_WIDTH;
  1606. vout_height = VOUT_MAX_HEIGHT;
  1607. #ifdef _3DS
  1608. vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
  1609. #elif defined(RENDER_GSKIT_PS2)
  1610. vout_buf = memalign(4096, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
  1611. retro_palette = memalign(128, gsKit_texture_size_ee(16, 16, GS_PSM_CT16));
  1612. #else
  1613. vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
  1614. #endif
  1615. PicoInit();
  1616. //PicoIn.osdMessage = plat_status_msg_busy_next;
  1617. PicoIn.mcdTrayOpen = disk_tray_open;
  1618. PicoIn.mcdTrayClose = disk_tray_close;
  1619. frameskip_type = 0;
  1620. frameskip_threshold = 0;
  1621. frameskip_counter = 0;
  1622. retro_audio_buff_active = false;
  1623. retro_audio_buff_occupancy = 0;
  1624. retro_audio_buff_underrun = false;
  1625. audio_latency = 0;
  1626. update_audio_latency = false;
  1627. update_variables(true);
  1628. }
  1629. void retro_deinit(void)
  1630. {
  1631. size_t i;
  1632. #ifdef _3DS
  1633. linearFree(vout_buf);
  1634. #elif defined(RENDER_GSKIT_PS2)
  1635. free(vout_buf);
  1636. free(retro_palette);
  1637. ps2 = NULL;
  1638. #else
  1639. free(vout_buf);
  1640. #endif
  1641. vout_buf = NULL;
  1642. if (vout_ghosting_buf)
  1643. free(vout_ghosting_buf);
  1644. vout_ghosting_buf = NULL;
  1645. PicoExit();
  1646. for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
  1647. if (disks[i].fname != NULL) {
  1648. free(disks[i].fname);
  1649. disks[i].fname = NULL;
  1650. }
  1651. }
  1652. libretro_supports_bitmasks = false;
  1653. }