libretro.c 53 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. * (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. static bool show_overscan = false;
  83. /* Required to allow on the fly changes to 'show overscan' */
  84. static int vm_current_start_line = -1;
  85. static int vm_current_line_count = -1;
  86. static int vm_current_start_col = -1;
  87. static int vm_current_col_count = -1;
  88. static int vout_16bit = 1;
  89. static int vout_format = PDF_RGB555;
  90. static void *vout_buf, *vout_ghosting_buf;
  91. static int vout_width, vout_height, vout_offset;
  92. static float vout_aspect = 0.0;
  93. static int vout_ghosting = 0;
  94. #if defined(RENDER_GSKIT_PS2)
  95. #define VOUT_8BIT_WIDTH 328
  96. #define VOUT_8BIT_HEIGHT 256
  97. RETRO_HW_RENDER_INTEFACE_GSKIT_PS2 *ps2 = NULL;
  98. static void *retro_palette;
  99. static struct retro_hw_ps2_insets padding;
  100. #endif
  101. static short ALIGNED(4) sndBuffer[2*INITIAL_SND_RATE/50];
  102. static void snd_write(int len);
  103. char **g_argv;
  104. #ifdef _WIN32
  105. #define SLASH '\\'
  106. #else
  107. #define SLASH '/'
  108. #endif
  109. /* Frameskipping Support */
  110. static unsigned frameskip_type = 0;
  111. static unsigned frameskip_threshold = 0;
  112. static uint16_t frameskip_counter = 0;
  113. static bool retro_audio_buff_active = false;
  114. static unsigned retro_audio_buff_occupancy = 0;
  115. static bool retro_audio_buff_underrun = false;
  116. /* Maximum number of consecutive frames that
  117. * can be skipped */
  118. #define FRAMESKIP_MAX 60
  119. static unsigned audio_latency = 0;
  120. static bool update_audio_latency = false;
  121. static void retro_audio_buff_status_cb(
  122. bool active, unsigned occupancy, bool underrun_likely)
  123. {
  124. retro_audio_buff_active = active;
  125. retro_audio_buff_occupancy = occupancy;
  126. retro_audio_buff_underrun = underrun_likely;
  127. }
  128. static void init_frameskip(void)
  129. {
  130. if (frameskip_type > 0)
  131. {
  132. struct retro_audio_buffer_status_callback buf_status_cb;
  133. buf_status_cb.callback = retro_audio_buff_status_cb;
  134. if (!environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK,
  135. &buf_status_cb))
  136. {
  137. if (log_cb)
  138. log_cb(RETRO_LOG_WARN, "Frameskip disabled - frontend does not support audio buffer status monitoring.\n");
  139. retro_audio_buff_active = false;
  140. retro_audio_buff_occupancy = 0;
  141. retro_audio_buff_underrun = false;
  142. audio_latency = 0;
  143. }
  144. else
  145. {
  146. /* Frameskip is enabled - increase frontend
  147. * audio latency to minimise potential
  148. * buffer underruns */
  149. float frame_time_msec = 1000.0f / (Pico.m.pal ? 50.0f : 60.0f);
  150. /* Set latency to 6x current frame time... */
  151. audio_latency = (unsigned)((6.0f * frame_time_msec) + 0.5f);
  152. /* ...then round up to nearest multiple of 32 */
  153. audio_latency = (audio_latency + 0x1F) & ~0x1F;
  154. }
  155. }
  156. else
  157. {
  158. environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK, NULL);
  159. audio_latency = 0;
  160. }
  161. update_audio_latency = true;
  162. }
  163. /* functions called by the core */
  164. void cache_flush_d_inval_i(void *start, void *end)
  165. {
  166. #ifdef __arm__
  167. size_t len = (char *)end - (char *)start;
  168. (void)len;
  169. #if defined(__BLACKBERRY_QNX__)
  170. msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
  171. #elif defined(__MACH__)
  172. sys_dcache_flush(start, len);
  173. sys_icache_invalidate(start, len);
  174. #elif defined(_3DS)
  175. ctr_flush_invalidate_cache();
  176. #elif defined(VITA)
  177. sceKernelSyncVMDomain(sceBlock, start, len);
  178. #else
  179. __clear_cache(start, end);
  180. #endif
  181. #endif
  182. }
  183. #ifdef RENDER_GSKIT_PS2
  184. /* ee-gcc is version 3.2, where these aren't yet defined */
  185. void __builtin___clear_cache(void *b, void *e)
  186. {
  187. #if 0 /* which of these is overall faster for lots of small cache updates? */
  188. SyncDCache(b, e);
  189. #else
  190. FlushCache(0); /* WRITEBACK_DCACHE */
  191. #endif
  192. FlushCache(2); /* INVALIDATE_ICACHE */
  193. }
  194. int __builtin_parity(unsigned v)
  195. {
  196. /* credits to bit twiddling hacks, https://graphics.stanford.edu/~seander/bithacks.html */
  197. v ^= v >> 16;
  198. v ^= v >> 8;
  199. v ^= v >> 4;
  200. return (0x6996 >> (v&0xf)) & 1;
  201. }
  202. #endif
  203. #ifdef __MACH__
  204. /* calls to this may be generated by the compiler, but it's missing in libc? */
  205. void __clear_cache(void *start, void *end)
  206. {
  207. size_t len = (char *)end - (char *)start;
  208. sys_dcache_flush(start, len);
  209. sys_icache_invalidate(start, len);
  210. }
  211. #endif
  212. #ifdef _WIN32
  213. /* mmap() replacement for Windows
  214. *
  215. * Author: Mike Frysinger <vapier@gentoo.org>
  216. * Placed into the public domain
  217. */
  218. /* References:
  219. * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
  220. * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
  221. * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
  222. * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
  223. */
  224. #define PROT_READ 0x1
  225. #define PROT_WRITE 0x2
  226. /* This flag is only available in WinXP+ */
  227. #ifdef FILE_MAP_EXECUTE
  228. #define PROT_EXEC 0x4
  229. #else
  230. #define PROT_EXEC 0x0
  231. #define FILE_MAP_EXECUTE 0
  232. #endif
  233. #define MAP_SHARED 0x01
  234. #define MAP_PRIVATE 0x02
  235. #define MAP_ANONYMOUS 0x20
  236. #define MAP_ANON MAP_ANONYMOUS
  237. #define MAP_FAILED ((void *) -1)
  238. #ifdef __USE_FILE_OFFSET64
  239. # define DWORD_HI(x) (x >> 32)
  240. # define DWORD_LO(x) ((x) & 0xffffffff)
  241. #else
  242. # define DWORD_HI(x) (0)
  243. # define DWORD_LO(x) (x)
  244. #endif
  245. static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
  246. {
  247. uint32_t flProtect, dwDesiredAccess;
  248. off_t end;
  249. HANDLE mmap_fd, h;
  250. void *ret;
  251. if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
  252. return MAP_FAILED;
  253. if (fd == -1) {
  254. if (!(flags & MAP_ANON) || offset)
  255. return MAP_FAILED;
  256. } else if (flags & MAP_ANON)
  257. return MAP_FAILED;
  258. if (prot & PROT_WRITE) {
  259. if (prot & PROT_EXEC)
  260. flProtect = PAGE_EXECUTE_READWRITE;
  261. else
  262. flProtect = PAGE_READWRITE;
  263. } else if (prot & PROT_EXEC) {
  264. if (prot & PROT_READ)
  265. flProtect = PAGE_EXECUTE_READ;
  266. else if (prot & PROT_EXEC)
  267. flProtect = PAGE_EXECUTE;
  268. } else
  269. flProtect = PAGE_READONLY;
  270. end = length + offset;
  271. if (fd == -1)
  272. mmap_fd = INVALID_HANDLE_VALUE;
  273. else
  274. mmap_fd = (HANDLE)_get_osfhandle(fd);
  275. h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
  276. if (h == NULL)
  277. return MAP_FAILED;
  278. if (prot & PROT_WRITE)
  279. dwDesiredAccess = FILE_MAP_WRITE;
  280. else
  281. dwDesiredAccess = FILE_MAP_READ;
  282. if (prot & PROT_EXEC)
  283. dwDesiredAccess |= FILE_MAP_EXECUTE;
  284. if (flags & MAP_PRIVATE)
  285. dwDesiredAccess |= FILE_MAP_COPY;
  286. ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
  287. if (ret == NULL) {
  288. CloseHandle(h);
  289. ret = MAP_FAILED;
  290. }
  291. return ret;
  292. }
  293. static void munmap(void *addr, size_t length)
  294. {
  295. UnmapViewOfFile(addr);
  296. /* ruh-ro, we leaked handle from CreateFileMapping() ... */
  297. }
  298. #elif defined(NO_MMAP)
  299. #define PROT_EXEC 0x04
  300. #define MAP_FAILED 0
  301. #define PROT_READ 0
  302. #define PROT_WRITE 0
  303. #define MAP_PRIVATE 0
  304. #define MAP_ANONYMOUS 0
  305. void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
  306. {
  307. return calloc(1, len);
  308. }
  309. void munmap(void *base_addr, size_t len)
  310. {
  311. free(base_addr);
  312. }
  313. int mprotect(void *addr, size_t len, int prot)
  314. {
  315. /* stub - not really needed at this point since this codepath has no dynarecs */
  316. return 0;
  317. }
  318. #endif
  319. #ifndef MAP_ANONYMOUS
  320. #define MAP_ANONYMOUS MAP_ANON
  321. #endif
  322. #ifdef _3DS
  323. typedef struct
  324. {
  325. unsigned int requested_map;
  326. void* buffer;
  327. }pico_mmap_t;
  328. pico_mmap_t pico_mmaps[] = {
  329. {0x02000000, 0},
  330. {0x06000000, 0},
  331. {NULL, 0}
  332. };
  333. void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
  334. {
  335. (void)is_fixed;
  336. if (ctr_svchack_successful)
  337. {
  338. pico_mmap_t* pico_mmap;
  339. for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
  340. {
  341. if ((pico_mmap->requested_map == addr))
  342. {
  343. unsigned int ptr_aligned, tmp;
  344. unsigned int currentHandle;
  345. unsigned int perm = 0b011;
  346. if (need_exec)
  347. perm = 0b111;
  348. size = (size + 0xFFF) & ~0xFFF;
  349. pico_mmap->buffer = malloc(size + 0x1000);
  350. ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
  351. svcDuplicateHandle(&currentHandle, 0xFFFF8001);
  352. if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
  353. {
  354. if (log_cb)
  355. log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
  356. exit(1);
  357. }
  358. svcCloseHandle(currentHandle);
  359. return (void*)pico_mmap->requested_map;
  360. }
  361. }
  362. }
  363. return malloc(size);
  364. }
  365. void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
  366. {
  367. if (ctr_svchack_successful)
  368. {
  369. pico_mmap_t* pico_mmap;
  370. for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
  371. {
  372. if ((pico_mmap->requested_map == (unsigned int)ptr))
  373. {
  374. unsigned int ptr_aligned;
  375. unsigned int currentHandle;
  376. void* tmp;
  377. oldsize = (oldsize + 0xFFF) & ~0xFFF;
  378. newsize = (newsize + 0xFFF) & ~0xFFF;
  379. ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
  380. svcDuplicateHandle(&currentHandle, 0xFFFF8001);
  381. svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
  382. tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
  383. if(!tmp)
  384. return NULL;
  385. pico_mmap->buffer = tmp;
  386. ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
  387. svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
  388. svcCloseHandle(currentHandle);
  389. return ptr;
  390. }
  391. }
  392. }
  393. return realloc(ptr, newsize);
  394. }
  395. void plat_munmap(void *ptr, size_t size)
  396. {
  397. if (ctr_svchack_successful)
  398. {
  399. pico_mmap_t* pico_mmap;
  400. for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
  401. {
  402. if ((pico_mmap->requested_map == (unsigned int)ptr))
  403. {
  404. unsigned int ptr_aligned;
  405. unsigned int currentHandle;
  406. size = (size + 0xFFF) & ~0xFFF;
  407. ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
  408. svcDuplicateHandle(&currentHandle, 0xFFFF8001);
  409. svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
  410. svcCloseHandle(currentHandle);
  411. free(pico_mmap->buffer);
  412. pico_mmap->buffer = NULL;
  413. return;
  414. }
  415. }
  416. }
  417. free(ptr);
  418. }
  419. #else
  420. void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
  421. {
  422. int flags = MAP_PRIVATE | MAP_ANONYMOUS;
  423. void *req, *ret;
  424. req = (void *)(uintptr_t)addr;
  425. ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
  426. if (ret == MAP_FAILED) {
  427. if (log_cb)
  428. log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
  429. return NULL;
  430. }
  431. if (addr != 0 && ret != (void *)(uintptr_t)addr) {
  432. if (log_cb)
  433. log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
  434. addr, ret);
  435. if (is_fixed) {
  436. munmap(ret, size);
  437. return NULL;
  438. }
  439. }
  440. return ret;
  441. }
  442. void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
  443. {
  444. #if defined(__linux__) && !defined(__SWITCH__)
  445. void *ret = mremap(ptr, oldsize, newsize, 0);
  446. if (ret == MAP_FAILED)
  447. return NULL;
  448. return ret;
  449. #else
  450. void *tmp, *ret;
  451. size_t preserve_size;
  452. preserve_size = oldsize;
  453. if (preserve_size > newsize)
  454. preserve_size = newsize;
  455. tmp = malloc(preserve_size);
  456. if (tmp == NULL)
  457. return NULL;
  458. memcpy(tmp, ptr, preserve_size);
  459. munmap(ptr, oldsize);
  460. ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
  461. MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  462. if (ret == MAP_FAILED) {
  463. free(tmp);
  464. return NULL;
  465. }
  466. memcpy(ret, tmp, preserve_size);
  467. free(tmp);
  468. return ret;
  469. #endif
  470. }
  471. void plat_munmap(void *ptr, size_t size)
  472. {
  473. if (ptr != NULL)
  474. munmap(ptr, size);
  475. }
  476. #endif
  477. // if NULL is returned, static buffer is used
  478. void *plat_mem_get_for_drc(size_t size)
  479. {
  480. void *mem = NULL;
  481. #if defined VITA
  482. sceKernelGetMemBlockBase(sceBlock, &mem);
  483. #elif defined HW_WUP
  484. // For WiiU, a slice of RWX memory left from the exploit is used, see:
  485. // https://github.com/embercold/pcsx_rearmed/commit/af0453223
  486. mem = (void *)(0x01000000 - size);
  487. #endif
  488. return mem;
  489. }
  490. int plat_mem_set_exec(void *ptr, size_t size)
  491. {
  492. int ret = -1;
  493. #ifdef _WIN32
  494. DWORD oldProtect = 0;
  495. ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, &oldProtect);
  496. if (ret == 0 && log_cb)
  497. log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
  498. GetLastError());
  499. #elif defined(_3DS)
  500. if (ctr_svchack_successful)
  501. {
  502. unsigned int currentHandle;
  503. svcDuplicateHandle(&currentHandle, 0xFFFF8001);
  504. ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
  505. size, MEMOP_PROT, 0b111);
  506. svcCloseHandle(currentHandle);
  507. ctr_flush_invalidate_cache();
  508. }
  509. else
  510. {
  511. if (log_cb)
  512. log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
  513. exit(1);
  514. }
  515. #elif defined(VITA)
  516. ret = sceKernelOpenVMDomain();
  517. #else
  518. ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
  519. if (ret != 0 && log_cb)
  520. log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
  521. #endif
  522. return ret;
  523. }
  524. void emu_video_mode_change(int start_line, int line_count, int start_col, int col_count)
  525. {
  526. struct retro_system_av_info av_info;
  527. vm_current_start_line = start_line;
  528. vm_current_line_count = line_count;
  529. vm_current_start_col = start_col;
  530. vm_current_col_count = col_count;
  531. // 8bit renderes create a 328x256 CLUT image, while 16bit creates 320x240 RGB
  532. vout_16bit = vout_format == PDF_RGB555 || (PicoIn.AHW & PAHW_32X);
  533. #if defined(RENDER_GSKIT_PS2)
  534. // calculate the borders of the real image inside the picodrive image
  535. vout_width = (vout_16bit ? VOUT_MAX_WIDTH : VOUT_8BIT_WIDTH);
  536. vout_height = (vout_16bit ? VOUT_MAX_HEIGHT : VOUT_8BIT_HEIGHT);
  537. vout_offset = (vout_16bit ? 0 : 8); // 8bit has 8 px overlap area on the left
  538. padding = (struct retro_hw_ps2_insets){start_line, vout_offset, vout_height - line_count - start_line, vout_width - col_count - vout_offset};
  539. int pxsz = (vout_16bit ? 2 : 1); // pixel size: RGB = 16 bits, CLUT = 8 bits
  540. memset(vout_buf, 0, pxsz * vout_width * vout_height);
  541. memset(retro_palette, 0, gsKit_texture_size_ee(16, 16, GS_PSM_CT16));
  542. PicoDrawSetOutBuf(vout_buf, pxsz * vout_width);
  543. if (ps2) {
  544. // prepare image as texture for rendering
  545. ps2->coreTexture->Width = vout_width;
  546. ps2->coreTexture->Height = vout_height;
  547. ps2->coreTexture->PSM = (vout_16bit ? GS_PSM_CT16 : GS_PSM_T8);
  548. ps2->padding = padding;
  549. }
  550. #else
  551. vout_width = col_count;
  552. memset(vout_buf, 0, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
  553. if (vout_16bit)
  554. PicoDrawSetOutBuf(vout_buf, vout_width * 2);
  555. if (show_overscan)
  556. {
  557. vout_height = line_count + (start_line * 2);
  558. vout_offset = 0;
  559. }
  560. else
  561. {
  562. vout_height = line_count;
  563. /* Note: We multiply by 2 here to account for pitch */
  564. vout_offset = vout_width * start_line * 2;
  565. }
  566. /* Redundant sanity check... */
  567. vout_height = (vout_height > VOUT_MAX_HEIGHT) ?
  568. VOUT_MAX_HEIGHT : vout_height;
  569. vout_offset = (vout_offset > vout_width * (VOUT_MAX_HEIGHT - 1) * 2) ?
  570. vout_width * (VOUT_MAX_HEIGHT - 1) * 2 : vout_offset;
  571. /* LCD ghosting */
  572. if (vout_ghosting && vout_height == 144) {
  573. vout_ghosting_buf = realloc(vout_ghosting_buf, VOUT_MAX_HEIGHT*vout_width*2);
  574. memset(vout_ghosting_buf, 0, vout_width*vout_height*2);
  575. }
  576. #endif
  577. Pico.m.dirtyPal = 1;
  578. // Update the geometry
  579. retro_get_system_av_info(&av_info);
  580. environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
  581. }
  582. void emu_32x_startup(void)
  583. {
  584. PicoDrawSetOutFormat(vout_format, 0);
  585. if ((vm_current_start_line != -1) &&
  586. (vm_current_line_count != -1) &&
  587. (vm_current_start_col != -1) &&
  588. (vm_current_col_count != -1))
  589. emu_video_mode_change(
  590. vm_current_start_line, vm_current_line_count,
  591. vm_current_start_col, vm_current_col_count);
  592. }
  593. void lprintf(const char *fmt, ...)
  594. {
  595. char buffer[256];
  596. va_list ap;
  597. va_start(ap, fmt);
  598. vsprintf(buffer, fmt, ap);
  599. /* TODO - add 'level' param for warning/error messages? */
  600. if (log_cb)
  601. log_cb(RETRO_LOG_INFO, "%s", buffer);
  602. va_end(ap);
  603. }
  604. /* libretro */
  605. bool libretro_supports_bitmasks = false;
  606. void retro_set_environment(retro_environment_t cb)
  607. {
  608. #ifdef USE_LIBRETRO_VFS
  609. struct retro_vfs_interface_info vfs_iface_info;
  610. #endif
  611. environ_cb = cb;
  612. libretro_set_core_options(environ_cb);
  613. #ifdef USE_LIBRETRO_VFS
  614. vfs_iface_info.required_interface_version = 1;
  615. vfs_iface_info.iface = NULL;
  616. if (environ_cb(RETRO_ENVIRONMENT_GET_VFS_INTERFACE, &vfs_iface_info))
  617. filestream_vfs_init(&vfs_iface_info);
  618. #endif
  619. }
  620. void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
  621. void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
  622. void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
  623. void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
  624. void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
  625. unsigned retro_api_version(void)
  626. {
  627. return RETRO_API_VERSION;
  628. }
  629. void retro_set_controller_port_device(unsigned port, unsigned device)
  630. {
  631. }
  632. void retro_get_system_info(struct retro_system_info *info)
  633. {
  634. memset(info, 0, sizeof(*info));
  635. info->library_name = "PicoDrive";
  636. #ifndef GIT_VERSION
  637. #define _GIT_VERSION ""
  638. #else
  639. #define _GIT_VERSION "-" GIT_VERSION
  640. #endif
  641. info->library_version = VERSION _GIT_VERSION;
  642. info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|chd|sms|gg";
  643. info->need_fullpath = true;
  644. }
  645. void retro_get_system_av_info(struct retro_system_av_info *info)
  646. {
  647. int common_height;
  648. float common_width;
  649. memset(info, 0, sizeof(*info));
  650. info->timing.fps = Pico.m.pal ? 50 : 60;
  651. info->timing.sample_rate = PicoIn.sndRate;
  652. info->geometry.base_width = vout_width;
  653. info->geometry.base_height = vout_height;
  654. info->geometry.max_width = vout_width;
  655. info->geometry.max_height = vout_height;
  656. common_width = vout_width;
  657. common_height = vout_height >= 192 && vout_height <= 224 ? 224 : vout_height;
  658. if (vout_aspect != 0)
  659. common_width = vout_aspect * common_height;
  660. info->geometry.aspect_ratio = common_width / common_height;
  661. }
  662. /* savestates */
  663. struct savestate_state {
  664. const char *load_buf;
  665. char *save_buf;
  666. size_t size;
  667. size_t pos;
  668. };
  669. size_t state_read(void *p, size_t size, size_t nmemb, void *file)
  670. {
  671. struct savestate_state *state = file;
  672. size_t bsize = size * nmemb;
  673. if (state->pos + bsize > state->size) {
  674. if (log_cb)
  675. log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
  676. state->pos + bsize, state->size);
  677. bsize = state->size - state->pos;
  678. if ((int)bsize <= 0)
  679. return 0;
  680. }
  681. memcpy(p, state->load_buf + state->pos, bsize);
  682. state->pos += bsize;
  683. return bsize;
  684. }
  685. size_t state_write(void *p, size_t size, size_t nmemb, void *file)
  686. {
  687. struct savestate_state *state = file;
  688. size_t bsize = size * nmemb;
  689. if (state->pos + bsize > state->size) {
  690. if (log_cb)
  691. log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
  692. state->pos + bsize, state->size);
  693. bsize = state->size - state->pos;
  694. if ((int)bsize <= 0)
  695. return 0;
  696. }
  697. memcpy(state->save_buf + state->pos, p, bsize);
  698. state->pos += bsize;
  699. return bsize;
  700. }
  701. size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
  702. {
  703. struct savestate_state *state = file;
  704. size_t bsize = size * nmemb;
  705. state->pos += bsize;
  706. return bsize;
  707. }
  708. size_t state_eof(void *file)
  709. {
  710. struct savestate_state *state = file;
  711. return state->pos >= state->size;
  712. }
  713. int state_fseek(void *file, long offset, int whence)
  714. {
  715. struct savestate_state *state = file;
  716. switch (whence) {
  717. case SEEK_SET:
  718. state->pos = offset;
  719. break;
  720. case SEEK_CUR:
  721. state->pos += offset;
  722. break;
  723. case SEEK_END:
  724. state->pos = state->size + offset;
  725. break;
  726. }
  727. return (int)state->pos;
  728. }
  729. /* savestate sizes vary wildly depending if cd/32x or
  730. * carthw is active, so run the whole thing to get size */
  731. size_t retro_serialize_size(void)
  732. {
  733. struct savestate_state state = { 0, };
  734. int ret;
  735. ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
  736. if (ret != 0)
  737. return 0;
  738. return state.pos;
  739. }
  740. bool retro_serialize(void *data, size_t size)
  741. {
  742. struct savestate_state state = { 0, };
  743. int ret;
  744. state.save_buf = data;
  745. state.size = size;
  746. state.pos = 0;
  747. ret = PicoStateFP(&state, 1, NULL, state_write,
  748. NULL, state_fseek);
  749. return ret == 0;
  750. }
  751. bool retro_unserialize(const void *data, size_t size)
  752. {
  753. struct savestate_state state = { 0, };
  754. int ret;
  755. state.load_buf = data;
  756. state.size = size;
  757. state.pos = 0;
  758. ret = PicoStateFP(&state, 0, state_read, NULL,
  759. state_eof, state_fseek);
  760. return ret == 0;
  761. }
  762. typedef struct patch
  763. {
  764. unsigned int addr;
  765. unsigned short data;
  766. unsigned char comp;
  767. } patch;
  768. extern void decode(char *buff, patch *dest);
  769. extern uint32_t m68k_read16(uint32_t a);
  770. extern void m68k_write16(uint32_t a, uint16_t d);
  771. void retro_cheat_reset(void)
  772. {
  773. int i=0;
  774. unsigned int addr;
  775. for (i = 0; i < PicoPatchCount; i++)
  776. {
  777. addr = PicoPatches[i].addr;
  778. if (addr < Pico.romsize) {
  779. if (PicoPatches[i].active)
  780. *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
  781. } else {
  782. if (PicoPatches[i].active)
  783. m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
  784. }
  785. }
  786. PicoPatchUnload();
  787. }
  788. void retro_cheat_set(unsigned index, bool enabled, const char *code)
  789. {
  790. patch pt;
  791. int array_len = PicoPatchCount;
  792. char codeCopy[256];
  793. char *buff;
  794. if (*code == '\0')
  795. return;
  796. strcpy(codeCopy, code);
  797. buff = strtok(codeCopy,"+");
  798. while (buff != NULL)
  799. {
  800. decode(buff, &pt);
  801. if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
  802. {
  803. log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
  804. return;
  805. }
  806. /* code was good, add it */
  807. if (array_len < PicoPatchCount + 1)
  808. {
  809. void *ptr;
  810. array_len *= 2;
  811. array_len++;
  812. ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
  813. if (ptr == NULL) {
  814. log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
  815. return;
  816. }
  817. PicoPatches = ptr;
  818. }
  819. strcpy(PicoPatches[PicoPatchCount].code, buff);
  820. PicoPatches[PicoPatchCount].active = enabled;
  821. PicoPatches[PicoPatchCount].addr = pt.addr;
  822. PicoPatches[PicoPatchCount].data = pt.data;
  823. PicoPatches[PicoPatchCount].comp = pt.comp;
  824. if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
  825. PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
  826. else
  827. PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
  828. PicoPatchCount++;
  829. buff = strtok(NULL,"+");
  830. }
  831. }
  832. /* multidisk support */
  833. static bool disk_ejected;
  834. static unsigned int disk_current_index;
  835. static unsigned int disk_count;
  836. static struct disks_state {
  837. char *fname;
  838. } disks[8];
  839. static bool disk_set_eject_state(bool ejected)
  840. {
  841. // TODO?
  842. disk_ejected = ejected;
  843. return true;
  844. }
  845. static bool disk_get_eject_state(void)
  846. {
  847. return disk_ejected;
  848. }
  849. static unsigned int disk_get_image_index(void)
  850. {
  851. return disk_current_index;
  852. }
  853. static bool disk_set_image_index(unsigned int index)
  854. {
  855. enum cd_track_type cd_type;
  856. int ret;
  857. if (index >= sizeof(disks) / sizeof(disks[0]))
  858. return false;
  859. if (disks[index].fname == NULL) {
  860. if (log_cb)
  861. log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
  862. // RetroArch specifies "no disk" with index == count,
  863. // so don't fail here..
  864. disk_current_index = index;
  865. return true;
  866. }
  867. if (log_cb)
  868. log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
  869. disks[index].fname);
  870. ret = -1;
  871. cd_type = PicoCdCheck(disks[index].fname, NULL);
  872. if (cd_type >= 0 && cd_type != CT_UNKNOWN)
  873. ret = cdd_load(disks[index].fname, cd_type);
  874. if (ret != 0) {
  875. if (log_cb)
  876. log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
  877. return 0;
  878. }
  879. disk_current_index = index;
  880. return true;
  881. }
  882. static unsigned int disk_get_num_images(void)
  883. {
  884. return disk_count;
  885. }
  886. static bool disk_replace_image_index(unsigned index,
  887. const struct retro_game_info *info)
  888. {
  889. bool ret = true;
  890. if (index >= sizeof(disks) / sizeof(disks[0]))
  891. return false;
  892. if (disks[index].fname != NULL)
  893. free(disks[index].fname);
  894. disks[index].fname = NULL;
  895. if (info != NULL) {
  896. disks[index].fname = strdup(info->path);
  897. if (index == disk_current_index)
  898. ret = disk_set_image_index(index);
  899. }
  900. return ret;
  901. }
  902. static bool disk_add_image_index(void)
  903. {
  904. if (disk_count >= sizeof(disks) / sizeof(disks[0]))
  905. return false;
  906. disk_count++;
  907. return true;
  908. }
  909. static struct retro_disk_control_callback disk_control = {
  910. disk_set_eject_state,
  911. disk_get_eject_state,
  912. disk_get_image_index,
  913. disk_set_image_index,
  914. disk_get_num_images,
  915. disk_replace_image_index,
  916. disk_add_image_index,
  917. };
  918. static void disk_tray_open(void)
  919. {
  920. if (log_cb)
  921. log_cb(RETRO_LOG_INFO, "cd tray open\n");
  922. disk_ejected = 1;
  923. }
  924. static void disk_tray_close(void)
  925. {
  926. if (log_cb)
  927. log_cb(RETRO_LOG_INFO, "cd tray close\n");
  928. disk_ejected = 0;
  929. }
  930. static const char * const biosfiles_us[] = {
  931. "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
  932. };
  933. static const char * const biosfiles_eu[] = {
  934. "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
  935. };
  936. static const char * const biosfiles_jp[] = {
  937. "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
  938. };
  939. static void make_system_path(char *buf, size_t buf_size,
  940. const char *name, const char *ext)
  941. {
  942. const char *dir = NULL;
  943. if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
  944. snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
  945. }
  946. else {
  947. snprintf(buf, buf_size, "%s%s", name, ext);
  948. }
  949. }
  950. static const char *find_bios(int *region, const char *cd_fname)
  951. {
  952. const char * const *files;
  953. static char path[256];
  954. int i, count;
  955. FILE *f = NULL;
  956. if (*region == 4) { // US
  957. files = biosfiles_us;
  958. count = sizeof(biosfiles_us) / sizeof(char *);
  959. } else if (*region == 8) { // EU
  960. files = biosfiles_eu;
  961. count = sizeof(biosfiles_eu) / sizeof(char *);
  962. } else if (*region == 1 || *region == 2) {
  963. files = biosfiles_jp;
  964. count = sizeof(biosfiles_jp) / sizeof(char *);
  965. } else {
  966. return NULL;
  967. }
  968. for (i = 0; i < count; i++)
  969. {
  970. make_system_path(path, sizeof(path), files[i], ".bin");
  971. f = fopen(path, "rb");
  972. if (f != NULL)
  973. break;
  974. make_system_path(path, sizeof(path), files[i], ".zip");
  975. f = fopen(path, "rb");
  976. if (f != NULL)
  977. break;
  978. }
  979. if (f != NULL) {
  980. if (log_cb)
  981. log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
  982. fclose(f);
  983. return path;
  984. }
  985. return NULL;
  986. }
  987. static void set_memory_maps(void)
  988. {
  989. if (PicoIn.AHW & PAHW_MCD)
  990. {
  991. const size_t SCD_BIT = 1ULL << 31ULL;
  992. const uint64_t mem = RETRO_MEMDESC_SYSTEM_RAM;
  993. struct retro_memory_map mmaps;
  994. struct retro_memory_descriptor descs[] = {
  995. { mem, PicoMem.ram, 0, 0xFF0000, 0, 0, 0x10000, "68KRAM" },
  996. /* virtual address using SCD_BIT so all 512M of prg_ram can be accessed */
  997. /* at address $80020000 */
  998. { mem, Pico_mcd->prg_ram, 0, SCD_BIT | 0x020000, 0, 0, 0x80000, "PRGRAM" },
  999. };
  1000. mmaps.descriptors = descs;
  1001. mmaps.num_descriptors = sizeof(descs) / sizeof(descs[0]);
  1002. environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps);
  1003. }
  1004. }
  1005. bool retro_load_game(const struct retro_game_info *info)
  1006. {
  1007. enum media_type_e media_type;
  1008. static char carthw_path[256];
  1009. size_t i;
  1010. struct retro_input_descriptor desc[] = {
  1011. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1012. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1013. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1014. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1015. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
  1016. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
  1017. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
  1018. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
  1019. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
  1020. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
  1021. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
  1022. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
  1023. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1024. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1025. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1026. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1027. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
  1028. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
  1029. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
  1030. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
  1031. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
  1032. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
  1033. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
  1034. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
  1035. { 0 },
  1036. };
  1037. struct retro_input_descriptor desc_sms[] = {
  1038. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1039. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1040. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1041. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1042. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
  1043. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
  1044. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
  1045. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1046. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1047. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1048. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1049. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
  1050. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
  1051. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
  1052. { 0 },
  1053. };
  1054. enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
  1055. if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
  1056. if (log_cb)
  1057. log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
  1058. return false;
  1059. }
  1060. if (info == NULL || info->path == NULL) {
  1061. if (log_cb)
  1062. log_cb(RETRO_LOG_ERROR, "info->path required\n");
  1063. return false;
  1064. }
  1065. for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
  1066. if (disks[i].fname != NULL) {
  1067. free(disks[i].fname);
  1068. disks[i].fname = NULL;
  1069. }
  1070. }
  1071. disk_current_index = 0;
  1072. disk_count = 1;
  1073. disks[0].fname = strdup(info->path);
  1074. make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
  1075. media_type = PicoLoadMedia(info->path, carthw_path,
  1076. find_bios, NULL);
  1077. switch (media_type) {
  1078. case PM_BAD_DETECT:
  1079. if (log_cb)
  1080. log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
  1081. return false;
  1082. case PM_BAD_CD:
  1083. if (log_cb)
  1084. log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
  1085. return false;
  1086. case PM_BAD_CD_NO_BIOS:
  1087. if (log_cb)
  1088. log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
  1089. return false;
  1090. case PM_ERROR:
  1091. if (log_cb)
  1092. log_cb(RETRO_LOG_ERROR, "Load error\n");
  1093. return false;
  1094. default:
  1095. break;
  1096. }
  1097. if (media_type == PM_MARK3)
  1098. environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
  1099. else
  1100. environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
  1101. PicoLoopPrepare();
  1102. PicoIn.writeSound = snd_write;
  1103. memset(sndBuffer, 0, sizeof(sndBuffer));
  1104. PicoIn.sndOut = sndBuffer;
  1105. PsndRerate(0);
  1106. PicoDrawSetOutFormat(vout_format, 0);
  1107. /* Setup retro memory maps */
  1108. set_memory_maps();
  1109. init_frameskip();
  1110. return true;
  1111. }
  1112. bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
  1113. {
  1114. return false;
  1115. }
  1116. void retro_unload_game(void)
  1117. {
  1118. }
  1119. unsigned retro_get_region(void)
  1120. {
  1121. return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
  1122. }
  1123. void *retro_get_memory_data(unsigned type)
  1124. {
  1125. uint8_t* data;
  1126. switch(type)
  1127. {
  1128. case RETRO_MEMORY_SAVE_RAM:
  1129. /* Note: MCD RAM cart uses Pico.sv.data */
  1130. if ((PicoIn.AHW & PAHW_MCD) &&
  1131. !(PicoIn.opt & POPT_EN_MCD_RAMCART))
  1132. data = Pico_mcd->bram;
  1133. else
  1134. data = Pico.sv.data;
  1135. break;
  1136. case RETRO_MEMORY_SYSTEM_RAM:
  1137. if (PicoIn.AHW & PAHW_SMS)
  1138. data = PicoMem.zram;
  1139. else
  1140. data = PicoMem.ram;
  1141. break;
  1142. default:
  1143. data = NULL;
  1144. break;
  1145. }
  1146. return data;
  1147. }
  1148. size_t retro_get_memory_size(unsigned type)
  1149. {
  1150. unsigned int i;
  1151. int sum;
  1152. switch(type)
  1153. {
  1154. case RETRO_MEMORY_SAVE_RAM:
  1155. if (PicoIn.AHW & PAHW_MCD)
  1156. {
  1157. if (PicoIn.opt & POPT_EN_MCD_RAMCART)
  1158. return 0x12000;
  1159. else /* bram */
  1160. return 0x2000;
  1161. }
  1162. if (Pico.m.frame_count == 0)
  1163. return Pico.sv.size;
  1164. // if game doesn't write to sram, don't report it to
  1165. // libretro so that RA doesn't write out zeroed .srm
  1166. for (i = 0, sum = 0; i < Pico.sv.size; i++)
  1167. sum |= Pico.sv.data[i];
  1168. return (sum != 0) ? Pico.sv.size : 0;
  1169. case RETRO_MEMORY_SYSTEM_RAM:
  1170. if (PicoIn.AHW & PAHW_SMS)
  1171. return 0x2000;
  1172. else
  1173. return sizeof(PicoMem.ram);
  1174. default:
  1175. return 0;
  1176. }
  1177. }
  1178. void retro_reset(void)
  1179. {
  1180. PicoReset();
  1181. }
  1182. static const unsigned short retro_pico_map[] = {
  1183. 1 << GBTN_B,
  1184. 1 << GBTN_A,
  1185. 1 << GBTN_MODE,
  1186. 1 << GBTN_START,
  1187. 1 << GBTN_UP,
  1188. 1 << GBTN_DOWN,
  1189. 1 << GBTN_LEFT,
  1190. 1 << GBTN_RIGHT,
  1191. 1 << GBTN_C,
  1192. 1 << GBTN_Y,
  1193. 1 << GBTN_X,
  1194. 1 << GBTN_Z,
  1195. };
  1196. #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
  1197. static void snd_write(int len)
  1198. {
  1199. audio_batch_cb(PicoIn.sndOut, len / 4);
  1200. }
  1201. static enum input_device input_name_to_val(const char *name)
  1202. {
  1203. if (strcmp(name, "3 button pad") == 0)
  1204. return PICO_INPUT_PAD_3BTN;
  1205. if (strcmp(name, "6 button pad") == 0)
  1206. return PICO_INPUT_PAD_6BTN;
  1207. if (strcmp(name, "None") == 0)
  1208. return PICO_INPUT_NOTHING;
  1209. if (log_cb)
  1210. log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
  1211. return PICO_INPUT_PAD_3BTN;
  1212. }
  1213. static void update_variables(bool first_run)
  1214. {
  1215. struct retro_variable var;
  1216. int OldPicoRegionOverride;
  1217. float old_vout_aspect;
  1218. unsigned old_frameskip_type;
  1219. int old_vout_format;
  1220. double new_sound_rate;
  1221. unsigned short old_snd_filter;
  1222. int32_t old_snd_filter_range;
  1223. bool old_show_overscan;
  1224. var.value = NULL;
  1225. var.key = "picodrive_input1";
  1226. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1227. PicoSetInputDevice(0, input_name_to_val(var.value));
  1228. var.value = NULL;
  1229. var.key = "picodrive_input2";
  1230. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1231. PicoSetInputDevice(1, input_name_to_val(var.value));
  1232. var.value = NULL;
  1233. var.key = "picodrive_ramcart";
  1234. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1235. if (strcmp(var.value, "enabled") == 0)
  1236. PicoIn.opt |= POPT_EN_MCD_RAMCART;
  1237. else
  1238. PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
  1239. }
  1240. var.value = NULL;
  1241. var.key = "picodrive_smstype";
  1242. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1243. if (strcmp(var.value, "Auto") == 0)
  1244. PicoIn.hwSelect = PHWS_AUTO;
  1245. else if (strcmp(var.value, "Game Gear") == 0)
  1246. PicoIn.hwSelect = PHWS_GG;
  1247. else
  1248. PicoIn.hwSelect = PHWS_SMS;
  1249. }
  1250. var.value = NULL;
  1251. var.key = "picodrive_smsfm";
  1252. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1253. if (strcmp(var.value, "on") == 0)
  1254. PicoIn.opt |= POPT_EN_YM2413;
  1255. else
  1256. PicoIn.opt &= ~POPT_EN_YM2413;
  1257. }
  1258. var.value = NULL;
  1259. var.key = "picodrive_smsmapper";
  1260. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1261. if (strcmp(var.value, "Auto") == 0)
  1262. PicoIn.hwSelect = PMS_MAP_AUTO;
  1263. else if (strcmp(var.value, "Codemasters") == 0)
  1264. PicoIn.hwSelect = PMS_MAP_CODEM;
  1265. else if (strcmp(var.value, "Korea") == 0)
  1266. PicoIn.hwSelect = PMS_MAP_KOREA;
  1267. else if (strcmp(var.value, "Korea MSX") == 0)
  1268. PicoIn.hwSelect = PMS_MAP_MSX;
  1269. else if (strcmp(var.value, "Korea X-in-1") == 0)
  1270. PicoIn.hwSelect = PMS_MAP_N32K;
  1271. else if (strcmp(var.value, "Korea 4-Pak") == 0)
  1272. PicoIn.hwSelect = PMS_MAP_N16K;
  1273. else if (strcmp(var.value, "Korea Janggun") == 0)
  1274. PicoIn.hwSelect = PMS_MAP_JANGGUN;
  1275. else if (strcmp(var.value, "Korea Nemesis") == 0)
  1276. PicoIn.hwSelect = PMS_MAP_NEMESIS;
  1277. else
  1278. PicoIn.hwSelect = PMS_MAP_SEGA;
  1279. }
  1280. var.value = NULL;
  1281. var.key = "picodrive_ggghost";
  1282. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1283. if (strcmp(var.value, "normal") == 0)
  1284. vout_ghosting = 2;
  1285. else if (strcmp(var.value, "weak") == 0)
  1286. vout_ghosting = 1;
  1287. else
  1288. vout_ghosting = 0;
  1289. }
  1290. OldPicoRegionOverride = PicoIn.regionOverride;
  1291. var.value = NULL;
  1292. var.key = "picodrive_region";
  1293. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1294. if (strcmp(var.value, "Auto") == 0)
  1295. PicoIn.regionOverride = 0;
  1296. else if (strcmp(var.value, "Japan NTSC") == 0)
  1297. PicoIn.regionOverride = 1;
  1298. else if (strcmp(var.value, "Japan PAL") == 0)
  1299. PicoIn.regionOverride = 2;
  1300. else if (strcmp(var.value, "US") == 0)
  1301. PicoIn.regionOverride = 4;
  1302. else if (strcmp(var.value, "Europe") == 0)
  1303. PicoIn.regionOverride = 8;
  1304. }
  1305. // Update region, fps and sound flags if needed
  1306. if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
  1307. {
  1308. PicoDetectRegion();
  1309. PicoLoopPrepare();
  1310. PsndRerate(1);
  1311. }
  1312. old_vout_aspect = vout_aspect;
  1313. var.value = NULL;
  1314. var.key = "picodrive_aspect";
  1315. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1316. if (strcmp(var.value, "4/3") == 0)
  1317. vout_aspect = VOUT_4_3;
  1318. else if (strcmp(var.value, "CRT") == 0)
  1319. vout_aspect = VOUT_CRT;
  1320. else
  1321. vout_aspect = VOUT_PAR;
  1322. }
  1323. if (vout_aspect != old_vout_aspect)
  1324. {
  1325. // Update the geometry
  1326. struct retro_system_av_info av_info;
  1327. retro_get_system_av_info(&av_info);
  1328. environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
  1329. }
  1330. var.value = NULL;
  1331. var.key = "picodrive_sprlim";
  1332. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1333. if (strcmp(var.value, "enabled") == 0)
  1334. PicoIn.opt |= POPT_DIS_SPRITE_LIM;
  1335. else
  1336. PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
  1337. }
  1338. old_show_overscan = show_overscan;
  1339. var.value = NULL;
  1340. var.key = "picodrive_overscan";
  1341. show_overscan = false;
  1342. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1343. if (strcmp(var.value, "enabled") == 0)
  1344. show_overscan = true;
  1345. }
  1346. var.value = NULL;
  1347. var.key = "picodrive_overclk68k";
  1348. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1349. PicoIn.overclockM68k = 0;
  1350. if (var.value[0] == '+')
  1351. PicoIn.overclockM68k = atoi(var.value + 1);
  1352. }
  1353. #ifdef DRC_SH2
  1354. var.value = NULL;
  1355. var.key = "picodrive_drc";
  1356. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1357. if (strcmp(var.value, "enabled") == 0)
  1358. PicoIn.opt |= POPT_EN_DRC;
  1359. else
  1360. PicoIn.opt &= ~POPT_EN_DRC;
  1361. }
  1362. #endif
  1363. #ifdef _3DS
  1364. if(!ctr_svchack_successful)
  1365. PicoIn.opt &= ~POPT_EN_DRC;
  1366. #endif
  1367. old_snd_filter = PicoIn.opt & POPT_EN_SNDFILTER;
  1368. var.value = NULL;
  1369. var.key = "picodrive_audio_filter";
  1370. PicoIn.opt &= ~POPT_EN_SNDFILTER;
  1371. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1372. if (strcmp(var.value, "low-pass") == 0)
  1373. PicoIn.opt |= POPT_EN_SNDFILTER;
  1374. }
  1375. old_snd_filter_range = PicoIn.sndFilterAlpha;
  1376. var.value = NULL;
  1377. var.key = "picodrive_lowpass_range";
  1378. PicoIn.sndFilterAlpha = (60 * 0x10000 / 100);
  1379. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1380. PicoIn.sndFilterAlpha = (atoi(var.value) * 0x10000 / 100);
  1381. }
  1382. if (((old_snd_filter ^ PicoIn.opt) & POPT_EN_SNDFILTER) ||
  1383. old_snd_filter_range != PicoIn.sndFilterAlpha) {
  1384. mix_reset (PicoIn.opt & POPT_EN_SNDFILTER ? PicoIn.sndFilterAlpha : 0);
  1385. }
  1386. old_frameskip_type = frameskip_type;
  1387. frameskip_type = 0;
  1388. var.key = "picodrive_frameskip";
  1389. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1390. if (strcmp(var.value, "auto") == 0)
  1391. frameskip_type = 1;
  1392. else if (strcmp(var.value, "manual") == 0)
  1393. frameskip_type = 2;
  1394. }
  1395. frameskip_threshold = 33;
  1396. var.key = "picodrive_frameskip_threshold";
  1397. var.value = NULL;
  1398. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1399. frameskip_threshold = strtol(var.value, NULL, 10);
  1400. old_vout_format = vout_format;
  1401. var.value = NULL;
  1402. var.key = "picodrive_renderer";
  1403. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1404. if (strcmp(var.value, "fast") == 0)
  1405. vout_format = PDF_NONE;
  1406. else if (strcmp(var.value, "good") == 0)
  1407. vout_format = PDF_8BIT;
  1408. else if (strcmp(var.value, "accurate") == 0)
  1409. vout_format = PDF_RGB555;
  1410. PicoIn.opt &= ~POPT_ALT_RENDERER;
  1411. if (vout_format == PDF_NONE)
  1412. PicoIn.opt |= POPT_ALT_RENDERER;
  1413. PicoDrawSetOutFormat(vout_format, 0);
  1414. }
  1415. var.value = NULL;
  1416. var.key = "picodrive_sound_rate";
  1417. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1418. new_sound_rate = atoi(var.value);
  1419. if (new_sound_rate != PicoIn.sndRate) {
  1420. /* Update the sound rate */
  1421. PicoIn.sndRate = new_sound_rate;
  1422. PsndRerate(1);
  1423. struct retro_system_av_info av_info;
  1424. retro_get_system_av_info(&av_info);
  1425. environ_cb(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &av_info);
  1426. }
  1427. }
  1428. /* setup video if required */
  1429. if (show_overscan != old_show_overscan || vout_format != old_vout_format)
  1430. {
  1431. if ((vm_current_start_line != -1) &&
  1432. (vm_current_line_count != -1) &&
  1433. (vm_current_start_col != -1) &&
  1434. (vm_current_col_count != -1))
  1435. emu_video_mode_change(
  1436. vm_current_start_line, vm_current_line_count,
  1437. vm_current_start_col, vm_current_col_count);
  1438. }
  1439. /* Reinitialise frameskipping, if required */
  1440. if (((frameskip_type != old_frameskip_type) ||
  1441. (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)) &&
  1442. !first_run)
  1443. init_frameskip();
  1444. }
  1445. void retro_run(void)
  1446. {
  1447. bool updated = false;
  1448. int pad, i;
  1449. static void *buff;
  1450. int16_t input;
  1451. PicoIn.skipFrame = 0;
  1452. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
  1453. update_variables(false);
  1454. input_poll_cb();
  1455. PicoIn.pad[0] = PicoIn.pad[1] = 0;
  1456. for (pad = 0; pad < 2; pad++) {
  1457. if (libretro_supports_bitmasks) {
  1458. input = input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK);
  1459. for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
  1460. if (input & (1 << i))
  1461. PicoIn.pad[pad] |= retro_pico_map[i];
  1462. } else {
  1463. for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
  1464. if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
  1465. PicoIn.pad[pad] |= retro_pico_map[i];
  1466. }
  1467. }
  1468. if (PicoPatches)
  1469. PicoPatchApply();
  1470. /* Check whether current frame should
  1471. * be skipped */
  1472. if ((frameskip_type > 0) && retro_audio_buff_active) {
  1473. switch (frameskip_type)
  1474. {
  1475. case 1: /* auto */
  1476. PicoIn.skipFrame = retro_audio_buff_underrun ? 1 : 0;
  1477. break;
  1478. case 2: /* manual */
  1479. PicoIn.skipFrame = (retro_audio_buff_occupancy < frameskip_threshold) ? 1 : 0;
  1480. break;
  1481. default:
  1482. PicoIn.skipFrame = 0;
  1483. break;
  1484. }
  1485. if (!PicoIn.skipFrame || (frameskip_counter >= FRAMESKIP_MAX)) {
  1486. PicoIn.skipFrame = 0;
  1487. frameskip_counter = 0;
  1488. } else
  1489. frameskip_counter++;
  1490. }
  1491. /* If frameskip settings have changed, update
  1492. * frontend audio latency */
  1493. if (update_audio_latency) {
  1494. environ_cb(RETRO_ENVIRONMENT_SET_MINIMUM_AUDIO_LATENCY,
  1495. &audio_latency);
  1496. update_audio_latency = false;
  1497. }
  1498. PicoFrame();
  1499. /* If frame was skipped, call video_cb() with
  1500. * a NULL buffer and return immediately */
  1501. if (PicoIn.skipFrame) {
  1502. video_cb(NULL, vout_width, vout_height, vout_width * 2);
  1503. return;
  1504. }
  1505. #if defined(RENDER_GSKIT_PS2)
  1506. buff = (uint32_t *)RETRO_HW_FRAME_BUFFER_VALID;
  1507. if (!ps2) {
  1508. // get access to the graphics hardware
  1509. if (!environ_cb(RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE, (void **)&ps2) || !ps2) {
  1510. printf("Failed to get HW rendering interface!\n");
  1511. return;
  1512. }
  1513. if (ps2->interface_version != RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION) {
  1514. printf("HW render interface mismatch, expected %u, got %u!\n",
  1515. RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION, ps2->interface_version);
  1516. return;
  1517. }
  1518. ps2->coreTexture->ClutPSM = GS_PSM_CT16;
  1519. ps2->coreTexture->Filter = GS_FILTER_LINEAR;
  1520. ps2->coreTexture->Clut = retro_palette;
  1521. ps2->coreTexture->Mem = vout_buf;
  1522. ps2->coreTexture->Width = vout_width;
  1523. ps2->coreTexture->Height = vout_height;
  1524. ps2->coreTexture->PSM = (vout_16bit ? GS_PSM_CT16 : GS_PSM_T8);
  1525. ps2->padding = padding;
  1526. }
  1527. // CLUT update needed?
  1528. if (!vout_16bit && Pico.m.dirtyPal) {
  1529. PicoDrawUpdateHighPal();
  1530. // Rotate CLUT. PS2 is special since entries in CLUT are not in sequence.
  1531. unsigned short int *pal=(void *)retro_palette;
  1532. for (i = 0; i < 256; i+=8) {
  1533. if ((i&0x18) == 0x08)
  1534. memcpy(pal+i,Pico.est.HighPal+i+8,16);
  1535. else if ((i&0x18) == 0x10)
  1536. memcpy(pal+i,Pico.est.HighPal+i-8,16);
  1537. else
  1538. memcpy(pal+i,Pico.est.HighPal+i,16);
  1539. }
  1540. }
  1541. #else
  1542. if (!vout_16bit) {
  1543. /* The 8 bit renderers write a CLUT image in Pico.est.Draw2FB, while libretro wants RGB in vout_buf.
  1544. * We need to manually copy that to vout_buf, applying the CLUT on the way. Especially
  1545. * with the fast renderer this is improving performance, at the expense of accuracy.
  1546. */
  1547. /* This section is mostly copied from pemu_finalize_frame in platform/linux/emu.c */
  1548. unsigned short *pd = (unsigned short *)vout_buf;
  1549. /* Skip the leftmost 8 columns (it is used as an overlap area for rendering) */
  1550. unsigned char *ps = Pico.est.Draw2FB + 8;
  1551. unsigned short *pal = Pico.est.HighPal;
  1552. int x;
  1553. if (Pico.m.dirtyPal)
  1554. PicoDrawUpdateHighPal();
  1555. /* Copy up to the max height to include the overscan area, and skip the leftmost 8 columns again */
  1556. for (i = 0; i < VOUT_MAX_HEIGHT; i++, ps += 8) {
  1557. for (x = 0; x < vout_width; x+=4) {
  1558. *pd++ = pal[*ps++];
  1559. *pd++ = pal[*ps++];
  1560. *pd++ = pal[*ps++];
  1561. *pd++ = pal[*ps++];
  1562. }
  1563. ps += 320-vout_width; /* Advance to next line in case of 32col mode */
  1564. }
  1565. }
  1566. if (vout_ghosting && vout_height == 144) {
  1567. unsigned short *pd = (unsigned short *)vout_buf;
  1568. unsigned short *ps = (unsigned short *)vout_ghosting_buf;
  1569. int y;
  1570. for (y = 0; y < VOUT_MAX_HEIGHT; y++) {
  1571. if (vout_ghosting == 1)
  1572. v_blend(pd, ps, vout_width, p_075_round);
  1573. else
  1574. v_blend(pd, ps, vout_width, p_05_round);
  1575. pd += vout_width;
  1576. ps += vout_width;
  1577. }
  1578. }
  1579. buff = (char*)vout_buf + vout_offset;
  1580. #endif
  1581. video_cb((short *)buff,
  1582. vout_width, vout_height, vout_width * 2);
  1583. }
  1584. void retro_init(void)
  1585. {
  1586. struct retro_log_callback log;
  1587. int level;
  1588. level = 0;
  1589. environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
  1590. if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
  1591. log_cb = log.log;
  1592. else
  1593. log_cb = NULL;
  1594. environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
  1595. if (environ_cb(RETRO_ENVIRONMENT_GET_INPUT_BITMASKS, NULL))
  1596. libretro_supports_bitmasks = true;
  1597. #ifdef _3DS
  1598. ctr_svchack_successful = ctr_svchack_init();
  1599. check_rosalina();
  1600. #elif defined(VITA)
  1601. sceBlock = getVMBlock();
  1602. #endif
  1603. PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM
  1604. | POPT_EN_PSG|POPT_EN_Z80|POPT_EN_GG_LCD
  1605. | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
  1606. | POPT_EN_32X|POPT_EN_PWM
  1607. | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
  1608. #ifdef __arm__
  1609. #ifdef _3DS
  1610. if (ctr_svchack_successful)
  1611. #endif
  1612. PicoIn.opt |= POPT_EN_DRC;
  1613. #endif
  1614. struct retro_variable var = { .key = "picodrive_sound_rate" };
  1615. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1616. PicoIn.sndRate = atoi(var.value);
  1617. else
  1618. PicoIn.sndRate = INITIAL_SND_RATE;
  1619. PicoIn.autoRgnOrder = 0x184; // US, EU, JP
  1620. vout_width = VOUT_MAX_WIDTH;
  1621. vout_height = VOUT_MAX_HEIGHT;
  1622. #ifdef _3DS
  1623. vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
  1624. #elif defined(RENDER_GSKIT_PS2)
  1625. vout_buf = memalign(4096, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
  1626. retro_palette = memalign(128, gsKit_texture_size_ee(16, 16, GS_PSM_CT16));
  1627. #else
  1628. vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
  1629. #endif
  1630. PicoInit();
  1631. //PicoIn.osdMessage = plat_status_msg_busy_next;
  1632. PicoIn.mcdTrayOpen = disk_tray_open;
  1633. PicoIn.mcdTrayClose = disk_tray_close;
  1634. frameskip_type = 0;
  1635. frameskip_threshold = 0;
  1636. frameskip_counter = 0;
  1637. retro_audio_buff_active = false;
  1638. retro_audio_buff_occupancy = 0;
  1639. retro_audio_buff_underrun = false;
  1640. audio_latency = 0;
  1641. update_audio_latency = false;
  1642. update_variables(true);
  1643. }
  1644. void retro_deinit(void)
  1645. {
  1646. size_t i;
  1647. #ifdef _3DS
  1648. linearFree(vout_buf);
  1649. #elif defined(RENDER_GSKIT_PS2)
  1650. free(vout_buf);
  1651. free(retro_palette);
  1652. ps2 = NULL;
  1653. #else
  1654. free(vout_buf);
  1655. #endif
  1656. vout_buf = NULL;
  1657. if (vout_ghosting_buf)
  1658. free(vout_ghosting_buf);
  1659. vout_ghosting_buf = NULL;
  1660. PicoExit();
  1661. for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
  1662. if (disks[i].fname != NULL) {
  1663. free(disks[i].fname);
  1664. disks[i].fname = NULL;
  1665. }
  1666. }
  1667. libretro_supports_bitmasks = false;
  1668. }