libretro.c 54 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. /* 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. bool option_categories_supported;
  600. #ifdef USE_LIBRETRO_VFS
  601. struct retro_vfs_interface_info vfs_iface_info;
  602. #endif
  603. environ_cb = cb;
  604. libretro_set_core_options(environ_cb,
  605. &option_categories_supported);
  606. #ifdef USE_LIBRETRO_VFS
  607. vfs_iface_info.required_interface_version = 1;
  608. vfs_iface_info.iface = NULL;
  609. if (environ_cb(RETRO_ENVIRONMENT_GET_VFS_INTERFACE, &vfs_iface_info))
  610. filestream_vfs_init(&vfs_iface_info);
  611. #endif
  612. }
  613. void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
  614. void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
  615. void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
  616. void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
  617. void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
  618. unsigned retro_api_version(void)
  619. {
  620. return RETRO_API_VERSION;
  621. }
  622. void retro_set_controller_port_device(unsigned port, unsigned device)
  623. {
  624. }
  625. void retro_get_system_info(struct retro_system_info *info)
  626. {
  627. memset(info, 0, sizeof(*info));
  628. info->library_name = "PicoDrive";
  629. #ifndef GIT_VERSION
  630. #define _GIT_VERSION ""
  631. #else
  632. #define _GIT_VERSION "-" GIT_VERSION
  633. #endif
  634. info->library_version = VERSION _GIT_VERSION;
  635. info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|chd|sms|gg";
  636. info->need_fullpath = true;
  637. }
  638. void retro_get_system_av_info(struct retro_system_av_info *info)
  639. {
  640. float tv_height = (vout_height > 144 ? Pico.m.pal ? 240 : 224 : 144);
  641. float common_width;
  642. memset(info, 0, sizeof(*info));
  643. info->timing.fps = Pico.m.pal ? 50 : 60;
  644. info->timing.sample_rate = PicoIn.sndRate;
  645. info->geometry.base_width = vout_width;
  646. info->geometry.base_height = vout_height;
  647. info->geometry.max_width = vout_width;
  648. info->geometry.max_height = vout_height;
  649. common_width = vout_width;
  650. if (vout_aspect != 0)
  651. common_width = vout_aspect * tv_height;
  652. info->geometry.aspect_ratio = common_width / vout_height;
  653. }
  654. /* savestates */
  655. struct savestate_state {
  656. const char *load_buf;
  657. char *save_buf;
  658. size_t size;
  659. size_t pos;
  660. };
  661. size_t state_read(void *p, size_t size, size_t nmemb, void *file)
  662. {
  663. struct savestate_state *state = file;
  664. size_t bsize = size * nmemb;
  665. if (state->pos + bsize > state->size) {
  666. if (log_cb)
  667. log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
  668. state->pos + bsize, state->size);
  669. bsize = state->size - state->pos;
  670. if ((int)bsize <= 0)
  671. return 0;
  672. }
  673. memcpy(p, state->load_buf + state->pos, bsize);
  674. state->pos += bsize;
  675. return bsize;
  676. }
  677. size_t state_write(void *p, size_t size, size_t nmemb, void *file)
  678. {
  679. struct savestate_state *state = file;
  680. size_t bsize = size * nmemb;
  681. if (state->pos + bsize > state->size) {
  682. if (log_cb)
  683. log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
  684. state->pos + bsize, state->size);
  685. bsize = state->size - state->pos;
  686. if ((int)bsize <= 0)
  687. return 0;
  688. }
  689. memcpy(state->save_buf + state->pos, p, bsize);
  690. state->pos += bsize;
  691. return bsize;
  692. }
  693. size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
  694. {
  695. struct savestate_state *state = file;
  696. size_t bsize = size * nmemb;
  697. state->pos += bsize;
  698. return bsize;
  699. }
  700. size_t state_eof(void *file)
  701. {
  702. struct savestate_state *state = file;
  703. return state->pos >= state->size;
  704. }
  705. int state_fseek(void *file, long offset, int whence)
  706. {
  707. struct savestate_state *state = file;
  708. switch (whence) {
  709. case SEEK_SET:
  710. state->pos = offset;
  711. break;
  712. case SEEK_CUR:
  713. state->pos += offset;
  714. break;
  715. case SEEK_END:
  716. state->pos = state->size + offset;
  717. break;
  718. }
  719. return (int)state->pos;
  720. }
  721. /* savestate sizes vary wildly depending if cd/32x or
  722. * carthw is active, so run the whole thing to get size */
  723. size_t retro_serialize_size(void)
  724. {
  725. struct savestate_state state = { 0, };
  726. int ret;
  727. ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
  728. if (ret != 0)
  729. return 0;
  730. return state.pos;
  731. }
  732. bool retro_serialize(void *data, size_t size)
  733. {
  734. struct savestate_state state = { 0, };
  735. int ret;
  736. state.save_buf = data;
  737. state.size = size;
  738. state.pos = 0;
  739. ret = PicoStateFP(&state, 1, NULL, state_write,
  740. NULL, state_fseek);
  741. return ret == 0;
  742. }
  743. bool retro_unserialize(const void *data, size_t size)
  744. {
  745. struct savestate_state state = { 0, };
  746. int ret;
  747. state.load_buf = data;
  748. state.size = size;
  749. state.pos = 0;
  750. ret = PicoStateFP(&state, 0, state_read, NULL,
  751. state_eof, state_fseek);
  752. return ret == 0;
  753. }
  754. typedef struct patch
  755. {
  756. unsigned int addr;
  757. unsigned short data;
  758. unsigned char comp;
  759. } patch;
  760. extern void decode(char *buff, patch *dest);
  761. extern uint32_t m68k_read16(uint32_t a);
  762. extern void m68k_write16(uint32_t a, uint16_t d);
  763. void retro_cheat_reset(void)
  764. {
  765. int i=0;
  766. unsigned int addr;
  767. for (i = 0; i < PicoPatchCount; i++)
  768. {
  769. addr = PicoPatches[i].addr;
  770. if (addr < Pico.romsize) {
  771. if (PicoPatches[i].active)
  772. *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
  773. } else {
  774. if (PicoPatches[i].active)
  775. m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
  776. }
  777. }
  778. PicoPatchUnload();
  779. }
  780. void retro_cheat_set(unsigned index, bool enabled, const char *code)
  781. {
  782. patch pt;
  783. int array_len = PicoPatchCount;
  784. char codeCopy[256];
  785. char *buff;
  786. if (*code == '\0')
  787. return;
  788. strcpy(codeCopy, code);
  789. buff = strtok(codeCopy,"+");
  790. while (buff != NULL)
  791. {
  792. decode(buff, &pt);
  793. if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
  794. {
  795. log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
  796. return;
  797. }
  798. /* code was good, add it */
  799. if (array_len < PicoPatchCount + 1)
  800. {
  801. void *ptr;
  802. array_len *= 2;
  803. array_len++;
  804. ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
  805. if (ptr == NULL) {
  806. log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
  807. return;
  808. }
  809. PicoPatches = ptr;
  810. }
  811. strcpy(PicoPatches[PicoPatchCount].code, buff);
  812. PicoPatches[PicoPatchCount].active = enabled;
  813. PicoPatches[PicoPatchCount].addr = pt.addr;
  814. PicoPatches[PicoPatchCount].data = pt.data;
  815. PicoPatches[PicoPatchCount].comp = pt.comp;
  816. if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
  817. PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
  818. else
  819. PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
  820. PicoPatchCount++;
  821. buff = strtok(NULL,"+");
  822. }
  823. }
  824. /* multidisk support */
  825. static bool disk_ejected;
  826. static unsigned int disk_current_index;
  827. static unsigned int disk_count;
  828. static struct disks_state {
  829. char *fname;
  830. } disks[8];
  831. static bool disk_set_eject_state(bool ejected)
  832. {
  833. // TODO?
  834. disk_ejected = ejected;
  835. return true;
  836. }
  837. static bool disk_get_eject_state(void)
  838. {
  839. return disk_ejected;
  840. }
  841. static unsigned int disk_get_image_index(void)
  842. {
  843. return disk_current_index;
  844. }
  845. static bool disk_set_image_index(unsigned int index)
  846. {
  847. enum cd_track_type cd_type;
  848. int ret;
  849. if (index >= sizeof(disks) / sizeof(disks[0]))
  850. return false;
  851. if (disks[index].fname == NULL) {
  852. if (log_cb)
  853. log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
  854. // RetroArch specifies "no disk" with index == count,
  855. // so don't fail here..
  856. disk_current_index = index;
  857. return true;
  858. }
  859. if (log_cb)
  860. log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
  861. disks[index].fname);
  862. ret = -1;
  863. cd_type = PicoCdCheck(disks[index].fname, NULL);
  864. if (cd_type >= 0 && cd_type != CT_UNKNOWN)
  865. ret = cdd_load(disks[index].fname, cd_type);
  866. if (ret != 0) {
  867. if (log_cb)
  868. log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
  869. return 0;
  870. }
  871. disk_current_index = index;
  872. return true;
  873. }
  874. static unsigned int disk_get_num_images(void)
  875. {
  876. return disk_count;
  877. }
  878. static bool disk_replace_image_index(unsigned index,
  879. const struct retro_game_info *info)
  880. {
  881. bool ret = true;
  882. if (index >= sizeof(disks) / sizeof(disks[0]))
  883. return false;
  884. if (disks[index].fname != NULL)
  885. free(disks[index].fname);
  886. disks[index].fname = NULL;
  887. if (info != NULL) {
  888. disks[index].fname = strdup(info->path);
  889. if (index == disk_current_index)
  890. ret = disk_set_image_index(index);
  891. }
  892. return ret;
  893. }
  894. static bool disk_add_image_index(void)
  895. {
  896. if (disk_count >= sizeof(disks) / sizeof(disks[0]))
  897. return false;
  898. disk_count++;
  899. return true;
  900. }
  901. static struct retro_disk_control_callback disk_control = {
  902. disk_set_eject_state,
  903. disk_get_eject_state,
  904. disk_get_image_index,
  905. disk_set_image_index,
  906. disk_get_num_images,
  907. disk_replace_image_index,
  908. disk_add_image_index,
  909. };
  910. static void disk_tray_open(void)
  911. {
  912. if (log_cb)
  913. log_cb(RETRO_LOG_INFO, "cd tray open\n");
  914. disk_ejected = 1;
  915. }
  916. static void disk_tray_close(void)
  917. {
  918. if (log_cb)
  919. log_cb(RETRO_LOG_INFO, "cd tray close\n");
  920. disk_ejected = 0;
  921. }
  922. static const char * const biosfiles_us[] = {
  923. "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
  924. };
  925. static const char * const biosfiles_eu[] = {
  926. "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
  927. };
  928. static const char * const biosfiles_jp[] = {
  929. "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
  930. };
  931. static void make_system_path(char *buf, size_t buf_size,
  932. const char *name, const char *ext)
  933. {
  934. const char *dir = NULL;
  935. if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
  936. snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
  937. }
  938. else {
  939. snprintf(buf, buf_size, "%s%s", name, ext);
  940. }
  941. }
  942. static const char *find_bios(int *region, const char *cd_fname)
  943. {
  944. const char * const *files;
  945. static char path[256];
  946. int i, count;
  947. FILE *f = NULL;
  948. if (*region == 4) { // US
  949. files = biosfiles_us;
  950. count = sizeof(biosfiles_us) / sizeof(char *);
  951. } else if (*region == 8) { // EU
  952. files = biosfiles_eu;
  953. count = sizeof(biosfiles_eu) / sizeof(char *);
  954. } else if (*region == 1 || *region == 2) {
  955. files = biosfiles_jp;
  956. count = sizeof(biosfiles_jp) / sizeof(char *);
  957. } else {
  958. return NULL;
  959. }
  960. for (i = 0; i < count; i++)
  961. {
  962. make_system_path(path, sizeof(path), files[i], ".bin");
  963. f = fopen(path, "rb");
  964. if (f != NULL)
  965. break;
  966. make_system_path(path, sizeof(path), files[i], ".zip");
  967. f = fopen(path, "rb");
  968. if (f != NULL)
  969. break;
  970. }
  971. if (f != NULL) {
  972. if (log_cb)
  973. log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
  974. fclose(f);
  975. return path;
  976. }
  977. return NULL;
  978. }
  979. static void set_memory_maps(void)
  980. {
  981. if (PicoIn.AHW & PAHW_MCD)
  982. {
  983. const size_t SCD_BIT = 1ULL << 31ULL;
  984. const uint64_t mem = RETRO_MEMDESC_SYSTEM_RAM;
  985. struct retro_memory_map mmaps;
  986. struct retro_memory_descriptor descs[] = {
  987. { mem, PicoMem.ram, 0, 0xFF0000, 0, 0, 0x10000, "68KRAM" },
  988. /* virtual address using SCD_BIT so all 512M of prg_ram can be accessed */
  989. /* at address $80020000 */
  990. { mem, Pico_mcd->prg_ram, 0, SCD_BIT | 0x020000, 0, 0, 0x80000, "PRGRAM" },
  991. };
  992. mmaps.descriptors = descs;
  993. mmaps.num_descriptors = sizeof(descs) / sizeof(descs[0]);
  994. environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps);
  995. }
  996. }
  997. bool retro_load_game(const struct retro_game_info *info)
  998. {
  999. enum media_type_e media_type;
  1000. static char carthw_path[256];
  1001. size_t i;
  1002. struct retro_input_descriptor desc[] = {
  1003. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1004. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1005. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1006. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1007. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
  1008. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
  1009. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
  1010. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
  1011. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
  1012. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
  1013. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
  1014. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
  1015. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1016. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1017. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1018. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1019. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
  1020. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
  1021. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
  1022. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
  1023. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
  1024. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
  1025. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
  1026. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
  1027. { 0 },
  1028. };
  1029. struct retro_input_descriptor desc_sms[] = {
  1030. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1031. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1032. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1033. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1034. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
  1035. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
  1036. { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
  1037. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
  1038. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
  1039. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
  1040. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
  1041. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
  1042. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
  1043. { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
  1044. { 0 },
  1045. };
  1046. enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
  1047. if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
  1048. if (log_cb)
  1049. log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
  1050. return false;
  1051. }
  1052. if (info == NULL || info->path == NULL) {
  1053. if (log_cb)
  1054. log_cb(RETRO_LOG_ERROR, "info->path required\n");
  1055. return false;
  1056. }
  1057. for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
  1058. if (disks[i].fname != NULL) {
  1059. free(disks[i].fname);
  1060. disks[i].fname = NULL;
  1061. }
  1062. }
  1063. disk_current_index = 0;
  1064. disk_count = 1;
  1065. disks[0].fname = strdup(info->path);
  1066. make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
  1067. media_type = PicoLoadMedia(info->path, carthw_path,
  1068. find_bios, NULL);
  1069. switch (media_type) {
  1070. case PM_BAD_DETECT:
  1071. if (log_cb)
  1072. log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
  1073. return false;
  1074. case PM_BAD_CD:
  1075. if (log_cb)
  1076. log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
  1077. return false;
  1078. case PM_BAD_CD_NO_BIOS:
  1079. if (log_cb)
  1080. log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
  1081. return false;
  1082. case PM_ERROR:
  1083. if (log_cb)
  1084. log_cb(RETRO_LOG_ERROR, "Load error\n");
  1085. return false;
  1086. default:
  1087. break;
  1088. }
  1089. if (media_type == PM_MARK3)
  1090. environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
  1091. else
  1092. environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
  1093. PicoLoopPrepare();
  1094. PicoIn.writeSound = snd_write;
  1095. memset(sndBuffer, 0, sizeof(sndBuffer));
  1096. PicoIn.sndOut = sndBuffer;
  1097. PsndRerate(0);
  1098. PicoDrawSetOutFormat(vout_format, 0);
  1099. if (vout_format == PDF_8BIT)
  1100. PicoDrawSetOutBuf(Pico.est.Draw2FB, 328);
  1101. /* Setup retro memory maps */
  1102. set_memory_maps();
  1103. init_frameskip();
  1104. return true;
  1105. }
  1106. bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
  1107. {
  1108. return false;
  1109. }
  1110. void retro_unload_game(void)
  1111. {
  1112. }
  1113. unsigned retro_get_region(void)
  1114. {
  1115. return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
  1116. }
  1117. void *retro_get_memory_data(unsigned type)
  1118. {
  1119. uint8_t* data;
  1120. switch(type)
  1121. {
  1122. case RETRO_MEMORY_SAVE_RAM:
  1123. /* Note: MCD RAM cart uses Pico.sv.data */
  1124. if ((PicoIn.AHW & PAHW_MCD) &&
  1125. !(PicoIn.opt & POPT_EN_MCD_RAMCART))
  1126. data = Pico_mcd->bram;
  1127. else
  1128. data = Pico.sv.data;
  1129. break;
  1130. case RETRO_MEMORY_SYSTEM_RAM:
  1131. if (PicoIn.AHW & PAHW_SMS)
  1132. data = PicoMem.zram;
  1133. else
  1134. data = PicoMem.ram;
  1135. break;
  1136. default:
  1137. data = NULL;
  1138. break;
  1139. }
  1140. return data;
  1141. }
  1142. size_t retro_get_memory_size(unsigned type)
  1143. {
  1144. unsigned int i;
  1145. int sum;
  1146. switch(type)
  1147. {
  1148. case RETRO_MEMORY_SAVE_RAM:
  1149. if (PicoIn.AHW & PAHW_MCD)
  1150. {
  1151. if (PicoIn.opt & POPT_EN_MCD_RAMCART)
  1152. return 0x12000;
  1153. else /* bram */
  1154. return 0x2000;
  1155. }
  1156. if (Pico.m.frame_count == 0)
  1157. return Pico.sv.size;
  1158. // if game doesn't write to sram, don't report it to
  1159. // libretro so that RA doesn't write out zeroed .srm
  1160. for (i = 0, sum = 0; i < Pico.sv.size; i++)
  1161. sum |= Pico.sv.data[i];
  1162. return (sum != 0) ? Pico.sv.size : 0;
  1163. case RETRO_MEMORY_SYSTEM_RAM:
  1164. if (PicoIn.AHW & PAHW_SMS)
  1165. return 0x2000;
  1166. else
  1167. return sizeof(PicoMem.ram);
  1168. default:
  1169. return 0;
  1170. }
  1171. }
  1172. void retro_reset(void)
  1173. {
  1174. PicoReset();
  1175. }
  1176. static const unsigned short retro_pico_map[] = {
  1177. [RETRO_DEVICE_ID_JOYPAD_B] = 1 << GBTN_B,
  1178. [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << GBTN_A,
  1179. [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << GBTN_MODE,
  1180. [RETRO_DEVICE_ID_JOYPAD_START] = 1 << GBTN_START,
  1181. [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << GBTN_UP,
  1182. [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << GBTN_DOWN,
  1183. [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << GBTN_LEFT,
  1184. [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << GBTN_RIGHT,
  1185. [RETRO_DEVICE_ID_JOYPAD_A] = 1 << GBTN_C,
  1186. [RETRO_DEVICE_ID_JOYPAD_X] = 1 << GBTN_Y,
  1187. [RETRO_DEVICE_ID_JOYPAD_L] = 1 << GBTN_X,
  1188. [RETRO_DEVICE_ID_JOYPAD_R] = 1 << GBTN_Z,
  1189. };
  1190. #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
  1191. static void snd_write(int len)
  1192. {
  1193. audio_batch_cb(PicoIn.sndOut, len / 4);
  1194. }
  1195. static enum input_device input_name_to_val(const char *name)
  1196. {
  1197. if (strcmp(name, "3 button pad") == 0)
  1198. return PICO_INPUT_PAD_3BTN;
  1199. if (strcmp(name, "6 button pad") == 0)
  1200. return PICO_INPUT_PAD_6BTN;
  1201. if (strcmp(name, "None") == 0)
  1202. return PICO_INPUT_NOTHING;
  1203. if (log_cb)
  1204. log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
  1205. return PICO_INPUT_PAD_3BTN;
  1206. }
  1207. static void update_variables(bool first_run)
  1208. {
  1209. struct retro_variable var;
  1210. int OldPicoRegionOverride;
  1211. float old_vout_aspect;
  1212. unsigned old_frameskip_type;
  1213. int old_vout_format;
  1214. double new_sound_rate;
  1215. unsigned short old_snd_filter;
  1216. int32_t old_snd_filter_range;
  1217. var.value = NULL;
  1218. var.key = "picodrive_input1";
  1219. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1220. PicoSetInputDevice(0, input_name_to_val(var.value));
  1221. var.value = NULL;
  1222. var.key = "picodrive_input2";
  1223. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1224. PicoSetInputDevice(1, input_name_to_val(var.value));
  1225. var.value = NULL;
  1226. var.key = "picodrive_ramcart";
  1227. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1228. if (strcmp(var.value, "enabled") == 0)
  1229. PicoIn.opt |= POPT_EN_MCD_RAMCART;
  1230. else
  1231. PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
  1232. }
  1233. var.value = NULL;
  1234. var.key = "picodrive_smstype";
  1235. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1236. if (strcmp(var.value, "Auto") == 0)
  1237. PicoIn.hwSelect = PHWS_AUTO;
  1238. else if (strcmp(var.value, "Game Gear") == 0)
  1239. PicoIn.hwSelect = PHWS_GG;
  1240. else
  1241. PicoIn.hwSelect = PHWS_SMS;
  1242. }
  1243. var.value = NULL;
  1244. var.key = "picodrive_smsfm";
  1245. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1246. if (strcmp(var.value, "on") == 0)
  1247. PicoIn.opt |= POPT_EN_YM2413;
  1248. else
  1249. PicoIn.opt &= ~POPT_EN_YM2413;
  1250. }
  1251. var.value = NULL;
  1252. var.key = "picodrive_smsmapper";
  1253. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1254. if (strcmp(var.value, "Auto") == 0)
  1255. PicoIn.mapper = PMS_MAP_AUTO;
  1256. else if (strcmp(var.value, "Codemasters") == 0)
  1257. PicoIn.mapper = PMS_MAP_CODEM;
  1258. else if (strcmp(var.value, "Korea") == 0)
  1259. PicoIn.mapper = PMS_MAP_KOREA;
  1260. else if (strcmp(var.value, "Korea MSX") == 0)
  1261. PicoIn.mapper = PMS_MAP_MSX;
  1262. else if (strcmp(var.value, "Korea X-in-1") == 0)
  1263. PicoIn.mapper = PMS_MAP_N32K;
  1264. else if (strcmp(var.value, "Korea 4-Pak") == 0)
  1265. PicoIn.mapper = PMS_MAP_N16K;
  1266. else if (strcmp(var.value, "Korea Janggun") == 0)
  1267. PicoIn.mapper = PMS_MAP_JANGGUN;
  1268. else if (strcmp(var.value, "Korea Nemesis") == 0)
  1269. PicoIn.mapper = PMS_MAP_NEMESIS;
  1270. else
  1271. PicoIn.mapper = PMS_MAP_SEGA;
  1272. }
  1273. var.value = NULL;
  1274. var.key = "picodrive_ggghost";
  1275. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1276. if (strcmp(var.value, "normal") == 0)
  1277. vout_ghosting = 2;
  1278. else if (strcmp(var.value, "weak") == 0)
  1279. vout_ghosting = 1;
  1280. else
  1281. vout_ghosting = 0;
  1282. }
  1283. OldPicoRegionOverride = PicoIn.regionOverride;
  1284. var.value = NULL;
  1285. var.key = "picodrive_region";
  1286. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1287. if (strcmp(var.value, "Auto") == 0)
  1288. PicoIn.regionOverride = 0;
  1289. else if (strcmp(var.value, "Japan NTSC") == 0)
  1290. PicoIn.regionOverride = 1;
  1291. else if (strcmp(var.value, "Japan PAL") == 0)
  1292. PicoIn.regionOverride = 2;
  1293. else if (strcmp(var.value, "US") == 0)
  1294. PicoIn.regionOverride = 4;
  1295. else if (strcmp(var.value, "Europe") == 0)
  1296. PicoIn.regionOverride = 8;
  1297. }
  1298. // Update region, fps and sound flags if needed
  1299. if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
  1300. {
  1301. PicoDetectRegion();
  1302. PicoLoopPrepare();
  1303. PsndRerate(1);
  1304. }
  1305. old_vout_aspect = vout_aspect;
  1306. var.value = NULL;
  1307. var.key = "picodrive_aspect";
  1308. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1309. if (strcmp(var.value, "4/3") == 0)
  1310. vout_aspect = VOUT_4_3;
  1311. else if (strcmp(var.value, "CRT") == 0)
  1312. vout_aspect = VOUT_CRT;
  1313. else
  1314. vout_aspect = VOUT_PAR;
  1315. }
  1316. if (vout_aspect != old_vout_aspect)
  1317. {
  1318. // Update the geometry
  1319. struct retro_system_av_info av_info;
  1320. retro_get_system_av_info(&av_info);
  1321. environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
  1322. }
  1323. var.value = NULL;
  1324. var.key = "picodrive_sprlim";
  1325. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1326. if (strcmp(var.value, "enabled") == 0)
  1327. PicoIn.opt |= POPT_DIS_SPRITE_LIM;
  1328. else
  1329. PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
  1330. }
  1331. var.value = NULL;
  1332. var.key = "picodrive_overclk68k";
  1333. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1334. PicoIn.overclockM68k = 0;
  1335. if (var.value[0] == '+')
  1336. PicoIn.overclockM68k = atoi(var.value + 1);
  1337. }
  1338. #ifdef DRC_SH2
  1339. var.value = NULL;
  1340. var.key = "picodrive_drc";
  1341. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1342. if (strcmp(var.value, "enabled") == 0)
  1343. PicoIn.opt |= POPT_EN_DRC;
  1344. else
  1345. PicoIn.opt &= ~POPT_EN_DRC;
  1346. }
  1347. #endif
  1348. #ifdef _3DS
  1349. if(!ctr_svchack_successful)
  1350. PicoIn.opt &= ~POPT_EN_DRC;
  1351. #endif
  1352. var.value = NULL;
  1353. var.key = "picodrive_dacnoise";
  1354. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1355. if (strcmp(var.value, "enabled") == 0)
  1356. PicoIn.opt |= POPT_EN_FM_DAC;
  1357. else
  1358. PicoIn.opt &= ~POPT_EN_FM_DAC;
  1359. }
  1360. old_snd_filter = PicoIn.opt & POPT_EN_SNDFILTER;
  1361. var.value = NULL;
  1362. var.key = "picodrive_audio_filter";
  1363. PicoIn.opt &= ~POPT_EN_SNDFILTER;
  1364. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1365. if (strcmp(var.value, "low-pass") == 0)
  1366. PicoIn.opt |= POPT_EN_SNDFILTER;
  1367. }
  1368. old_snd_filter_range = PicoIn.sndFilterAlpha;
  1369. var.value = NULL;
  1370. var.key = "picodrive_lowpass_range";
  1371. PicoIn.sndFilterAlpha = (60 * 0x10000 / 100);
  1372. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1373. PicoIn.sndFilterAlpha = (atoi(var.value) * 0x10000 / 100);
  1374. }
  1375. if (((old_snd_filter ^ PicoIn.opt) & POPT_EN_SNDFILTER) ||
  1376. old_snd_filter_range != PicoIn.sndFilterAlpha) {
  1377. mix_reset (PicoIn.opt & POPT_EN_SNDFILTER ? PicoIn.sndFilterAlpha : 0);
  1378. }
  1379. old_frameskip_type = frameskip_type;
  1380. frameskip_type = 0;
  1381. var.key = "picodrive_frameskip";
  1382. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1383. if (strcmp(var.value, "auto") == 0)
  1384. frameskip_type = 1;
  1385. else if (strcmp(var.value, "manual") == 0)
  1386. frameskip_type = 2;
  1387. }
  1388. frameskip_threshold = 33;
  1389. var.key = "picodrive_frameskip_threshold";
  1390. var.value = NULL;
  1391. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1392. frameskip_threshold = strtol(var.value, NULL, 10);
  1393. old_vout_format = vout_format;
  1394. var.value = NULL;
  1395. var.key = "picodrive_renderer";
  1396. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1397. if (strcmp(var.value, "fast") == 0)
  1398. vout_format = PDF_NONE;
  1399. else if (strcmp(var.value, "good") == 0)
  1400. vout_format = PDF_8BIT;
  1401. else if (strcmp(var.value, "accurate") == 0)
  1402. vout_format = PDF_RGB555;
  1403. PicoIn.opt &= ~POPT_ALT_RENDERER;
  1404. if (vout_format == PDF_NONE)
  1405. PicoIn.opt |= POPT_ALT_RENDERER;
  1406. PicoDrawSetOutFormat(vout_format, 0);
  1407. if (vout_format == PDF_8BIT)
  1408. PicoDrawSetOutBuf(Pico.est.Draw2FB, 328);
  1409. }
  1410. var.value = NULL;
  1411. var.key = "picodrive_sound_rate";
  1412. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
  1413. new_sound_rate = atoi(var.value);
  1414. if (new_sound_rate != PicoIn.sndRate) {
  1415. /* Update the sound rate */
  1416. PicoIn.sndRate = new_sound_rate;
  1417. PsndRerate(1);
  1418. struct retro_system_av_info av_info;
  1419. retro_get_system_av_info(&av_info);
  1420. environ_cb(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &av_info);
  1421. }
  1422. }
  1423. /* setup video if required */
  1424. if (vout_format != old_vout_format)
  1425. {
  1426. if ((vm_current_start_line != -1) &&
  1427. (vm_current_line_count != -1) &&
  1428. (vm_current_start_col != -1) &&
  1429. (vm_current_col_count != -1))
  1430. emu_video_mode_change(
  1431. vm_current_start_line, vm_current_line_count,
  1432. vm_current_start_col, vm_current_col_count);
  1433. }
  1434. /* Reinitialise frameskipping, if required */
  1435. if (((frameskip_type != old_frameskip_type) ||
  1436. (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)) &&
  1437. !first_run)
  1438. init_frameskip();
  1439. }
  1440. void retro_run(void)
  1441. {
  1442. bool updated = false;
  1443. int pad, i;
  1444. static void *buff;
  1445. int16_t input;
  1446. PicoIn.skipFrame = 0;
  1447. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
  1448. update_variables(false);
  1449. input_poll_cb();
  1450. PicoIn.pad[0] = PicoIn.pad[1] = 0;
  1451. for (pad = 0; pad < 2; pad++) {
  1452. if (libretro_supports_bitmasks) {
  1453. input = input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK);
  1454. for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
  1455. if (input & (1 << i))
  1456. PicoIn.pad[pad] |= retro_pico_map[i];
  1457. } else {
  1458. for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
  1459. if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
  1460. PicoIn.pad[pad] |= retro_pico_map[i];
  1461. }
  1462. }
  1463. if (PicoPatches)
  1464. PicoPatchApply();
  1465. /* Check whether current frame should
  1466. * be skipped */
  1467. if ((frameskip_type > 0) && retro_audio_buff_active) {
  1468. switch (frameskip_type)
  1469. {
  1470. case 1: /* auto */
  1471. PicoIn.skipFrame = retro_audio_buff_underrun ? 1 : 0;
  1472. break;
  1473. case 2: /* manual */
  1474. PicoIn.skipFrame = (retro_audio_buff_occupancy < frameskip_threshold) ? 1 : 0;
  1475. break;
  1476. default:
  1477. PicoIn.skipFrame = 0;
  1478. break;
  1479. }
  1480. if (!PicoIn.skipFrame || (frameskip_counter >= FRAMESKIP_MAX)) {
  1481. PicoIn.skipFrame = 0;
  1482. frameskip_counter = 0;
  1483. } else
  1484. frameskip_counter++;
  1485. }
  1486. /* If frameskip settings have changed, update
  1487. * frontend audio latency */
  1488. if (update_audio_latency) {
  1489. environ_cb(RETRO_ENVIRONMENT_SET_MINIMUM_AUDIO_LATENCY,
  1490. &audio_latency);
  1491. update_audio_latency = false;
  1492. }
  1493. PicoFrame();
  1494. /* If frame was skipped, call video_cb() with
  1495. * a NULL buffer and return immediately */
  1496. if (PicoIn.skipFrame) {
  1497. video_cb(NULL, vout_width, vout_height, vout_width * 2);
  1498. return;
  1499. }
  1500. #if defined(RENDER_GSKIT_PS2)
  1501. buff = (uint32_t *)RETRO_HW_FRAME_BUFFER_VALID;
  1502. if (!ps2) {
  1503. // get access to the graphics hardware
  1504. if (!environ_cb(RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE, (void **)&ps2) || !ps2) {
  1505. printf("Failed to get HW rendering interface!\n");
  1506. return;
  1507. }
  1508. if (ps2->interface_version != RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION) {
  1509. printf("HW render interface mismatch, expected %u, got %u!\n",
  1510. RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION, ps2->interface_version);
  1511. return;
  1512. }
  1513. ps2->coreTexture->ClutPSM = GS_PSM_CT16;
  1514. ps2->coreTexture->Filter = GS_FILTER_LINEAR;
  1515. ps2->coreTexture->Clut = retro_palette;
  1516. ps2->coreTexture->Mem = vout_buf;
  1517. ps2->coreTexture->Width = vout_width;
  1518. ps2->coreTexture->Height = vout_height;
  1519. ps2->coreTexture->PSM = (vout_16bit ? GS_PSM_CT16 : GS_PSM_T8);
  1520. ps2->padding = padding;
  1521. }
  1522. // CLUT update needed?
  1523. if (!vout_16bit && Pico.m.dirtyPal) {
  1524. PicoDrawUpdateHighPal();
  1525. // Rotate CLUT. PS2 is special since entries in CLUT are not in sequence.
  1526. unsigned short int *pal=(void *)retro_palette;
  1527. for (i = 0; i < 256; i+=8) {
  1528. if ((i&0x18) == 0x08)
  1529. memcpy(pal+i,Pico.est.HighPal+i+8,16);
  1530. else if ((i&0x18) == 0x10)
  1531. memcpy(pal+i,Pico.est.HighPal+i-8,16);
  1532. else
  1533. memcpy(pal+i,Pico.est.HighPal+i,16);
  1534. }
  1535. }
  1536. #else
  1537. if (!vout_16bit) {
  1538. /* The 8 bit renderers write a CLUT image in Pico.est.Draw2FB, while libretro wants RGB in vout_buf.
  1539. * We need to manually copy that to vout_buf, applying the CLUT on the way. Especially
  1540. * with the fast renderer this is improving performance, at the expense of accuracy.
  1541. */
  1542. /* This section is mostly copied from pemu_finalize_frame in platform/linux/emu.c */
  1543. unsigned short *pd = (unsigned short *)((char *)vout_buf + vout_offset);
  1544. /* Skip the leftmost 8 columns (it is used as an overlap area for rendering) */
  1545. unsigned char *ps = Pico.est.Draw2FB + vm_current_start_line * 328 + 8;
  1546. unsigned short *pal = Pico.est.HighPal;
  1547. int x;
  1548. if (Pico.m.dirtyPal)
  1549. PicoDrawUpdateHighPal();
  1550. /* Copy, and skip the leftmost 8 columns again */
  1551. for (i = 0; i < vout_height; i++, ps += 8) {
  1552. for (x = 0; x < vout_width; x+=4) {
  1553. *pd++ = pal[*ps++];
  1554. *pd++ = pal[*ps++];
  1555. *pd++ = pal[*ps++];
  1556. *pd++ = pal[*ps++];
  1557. }
  1558. ps += 320-vout_width; /* Advance to next line in case of 32col mode */
  1559. }
  1560. }
  1561. if (vout_ghosting && vout_height == 144) {
  1562. unsigned short *pd = (unsigned short *)vout_buf;
  1563. unsigned short *ps = (unsigned short *)vout_ghosting_buf;
  1564. int y;
  1565. for (y = 0; y < vout_height; y++) {
  1566. if (vout_ghosting == 1)
  1567. v_blend(pd, ps, vout_width, p_075_round);
  1568. else
  1569. v_blend(pd, ps, vout_width, p_05_round);
  1570. pd += vout_width;
  1571. ps += vout_width;
  1572. }
  1573. }
  1574. buff = (char*)vout_buf + vout_offset;
  1575. #endif
  1576. video_cb((short *)buff,
  1577. vout_width, vout_height, vout_width * 2);
  1578. }
  1579. void retro_init(void)
  1580. {
  1581. struct retro_log_callback log;
  1582. int level;
  1583. level = 0;
  1584. environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
  1585. if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
  1586. log_cb = log.log;
  1587. else
  1588. log_cb = NULL;
  1589. environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
  1590. if (environ_cb(RETRO_ENVIRONMENT_GET_INPUT_BITMASKS, NULL))
  1591. libretro_supports_bitmasks = true;
  1592. #ifdef _3DS
  1593. ctr_svchack_successful = ctr_svchack_init();
  1594. check_rosalina();
  1595. #elif defined(VITA)
  1596. sceBlock = getVMBlock();
  1597. #endif
  1598. PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM
  1599. | POPT_EN_PSG|POPT_EN_Z80|POPT_EN_GG_LCD
  1600. | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
  1601. | POPT_EN_32X|POPT_EN_PWM
  1602. | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
  1603. #ifdef __arm__
  1604. #ifdef _3DS
  1605. if (ctr_svchack_successful)
  1606. #endif
  1607. PicoIn.opt |= POPT_EN_DRC;
  1608. #endif
  1609. struct retro_variable var = { .key = "picodrive_sound_rate" };
  1610. if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
  1611. PicoIn.sndRate = atoi(var.value);
  1612. else
  1613. PicoIn.sndRate = INITIAL_SND_RATE;
  1614. PicoIn.autoRgnOrder = 0x184; // US, EU, JP
  1615. vout_width = VOUT_MAX_WIDTH;
  1616. vout_height = VOUT_MAX_HEIGHT;
  1617. #ifdef _3DS
  1618. vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
  1619. #elif defined(RENDER_GSKIT_PS2)
  1620. vout_buf = memalign(4096, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
  1621. retro_palette = memalign(128, gsKit_texture_size_ee(16, 16, GS_PSM_CT16));
  1622. #else
  1623. vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
  1624. #endif
  1625. PicoInit();
  1626. //PicoIn.osdMessage = plat_status_msg_busy_next;
  1627. PicoIn.mcdTrayOpen = disk_tray_open;
  1628. PicoIn.mcdTrayClose = disk_tray_close;
  1629. frameskip_type = 0;
  1630. frameskip_threshold = 0;
  1631. frameskip_counter = 0;
  1632. retro_audio_buff_active = false;
  1633. retro_audio_buff_occupancy = 0;
  1634. retro_audio_buff_underrun = false;
  1635. audio_latency = 0;
  1636. update_audio_latency = false;
  1637. update_variables(true);
  1638. }
  1639. void retro_deinit(void)
  1640. {
  1641. size_t i;
  1642. #ifdef _3DS
  1643. linearFree(vout_buf);
  1644. #elif defined(RENDER_GSKIT_PS2)
  1645. free(vout_buf);
  1646. free(retro_palette);
  1647. ps2 = NULL;
  1648. #else
  1649. free(vout_buf);
  1650. #endif
  1651. vout_buf = NULL;
  1652. if (vout_ghosting_buf)
  1653. free(vout_ghosting_buf);
  1654. vout_ghosting_buf = NULL;
  1655. PicoExit();
  1656. for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
  1657. if (disks[i].fname != NULL) {
  1658. free(disks[i].fname);
  1659. disks[i].fname = NULL;
  1660. }
  1661. }
  1662. libretro_supports_bitmasks = false;
  1663. }