2 * libretro core glue for PicoDrive
5 * (C) Daniel De Matteis, 2013
7 * This work is licensed under the terms of MAME license.
8 * See COPYING file in the top-level directory.
11 #define _GNU_SOURCE 1 // mremap
23 #include <sys/types.h>
27 #include <libkern/OSCacheControl.h>
31 #include "3ds/3ds_utils.h"
36 int svcDuplicateHandle(unsigned int* out, unsigned int original);
37 int svcCloseHandle(unsigned int handle);
38 int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
39 unsigned int size, unsigned int type, unsigned int perm);
40 void* linearMemAlign(size_t size, size_t alignment);
41 void linearFree(void* mem);
43 static int ctr_svchack_successful = 0;
46 #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
48 #include <psp2/kernel/sysmem.h>
51 int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
55 #include <pico/pico_int.h>
56 #include <pico/state.h>
57 #include <pico/patch.h>
58 #include "../common/input_pico.h"
59 #include "../common/version.h"
62 static retro_log_printf_t log_cb;
63 static retro_video_refresh_t video_cb;
64 static retro_input_poll_t input_poll_cb;
65 static retro_input_state_t input_state_cb;
66 static retro_environment_t environ_cb;
67 static retro_audio_sample_batch_t audio_batch_cb;
69 #define VOUT_MAX_WIDTH 320
70 #define VOUT_MAX_HEIGHT 240
72 static const float VOUT_PAR = 0.0;
73 static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
74 static const float VOUT_CRT = (224.0f * 1.29911f);
76 bool show_overscan = false;
78 static void *vout_buf;
79 static int vout_width, vout_height, vout_offset;
80 static float user_vout_width = 0.0;
83 static short sndBuffer[2*44100/50];
85 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
88 static void snd_write(int len);
96 /* functions called by the core */
98 void cache_flush_d_inval_i(void *start, void *end)
101 size_t len = (char *)end - (char *)start;
103 #if defined(__BLACKBERRY_QNX__)
104 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
105 #elif defined(__MACH__)
106 sys_dcache_flush(start, len);
107 sys_icache_invalidate(start, len);
109 ctr_flush_invalidate_cache();
111 sceKernelSyncVMDomain(sceBlock, start, len);
113 __clear_cache(start, end);
119 /* mmap() replacement for Windows
121 * Author: Mike Frysinger <vapier@gentoo.org>
122 * Placed into the public domain
126 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
127 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
128 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
129 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
132 #define PROT_READ 0x1
133 #define PROT_WRITE 0x2
134 /* This flag is only available in WinXP+ */
135 #ifdef FILE_MAP_EXECUTE
136 #define PROT_EXEC 0x4
138 #define PROT_EXEC 0x0
139 #define FILE_MAP_EXECUTE 0
142 #define MAP_SHARED 0x01
143 #define MAP_PRIVATE 0x02
144 #define MAP_ANONYMOUS 0x20
145 #define MAP_ANON MAP_ANONYMOUS
146 #define MAP_FAILED ((void *) -1)
148 #ifdef __USE_FILE_OFFSET64
149 # define DWORD_HI(x) (x >> 32)
150 # define DWORD_LO(x) ((x) & 0xffffffff)
152 # define DWORD_HI(x) (0)
153 # define DWORD_LO(x) (x)
156 static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
158 uint32_t flProtect, dwDesiredAccess;
163 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
166 if (!(flags & MAP_ANON) || offset)
168 } else if (flags & MAP_ANON)
171 if (prot & PROT_WRITE) {
172 if (prot & PROT_EXEC)
173 flProtect = PAGE_EXECUTE_READWRITE;
175 flProtect = PAGE_READWRITE;
176 } else if (prot & PROT_EXEC) {
177 if (prot & PROT_READ)
178 flProtect = PAGE_EXECUTE_READ;
179 else if (prot & PROT_EXEC)
180 flProtect = PAGE_EXECUTE;
182 flProtect = PAGE_READONLY;
184 end = length + offset;
187 mmap_fd = INVALID_HANDLE_VALUE;
189 mmap_fd = (HANDLE)_get_osfhandle(fd);
190 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
194 if (prot & PROT_WRITE)
195 dwDesiredAccess = FILE_MAP_WRITE;
197 dwDesiredAccess = FILE_MAP_READ;
198 if (prot & PROT_EXEC)
199 dwDesiredAccess |= FILE_MAP_EXECUTE;
200 if (flags & MAP_PRIVATE)
201 dwDesiredAccess |= FILE_MAP_COPY;
202 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
210 static void munmap(void *addr, size_t length)
212 UnmapViewOfFile(addr);
213 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
215 #elif defined(NO_MMAP)
216 #define PROT_EXEC 0x04
220 #define MAP_PRIVATE 0
221 #define MAP_ANONYMOUS 0
223 void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
228 void munmap(void *base_addr, size_t len)
233 int mprotect(void *addr, size_t len, int prot)
235 /* stub - not really needed at this point since this codepath has no dynarecs */
241 #ifndef MAP_ANONYMOUS
242 #define MAP_ANONYMOUS MAP_ANON
248 unsigned int requested_map;
252 pico_mmap_t pico_mmaps[] = {
258 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
262 if (ctr_svchack_successful)
264 pico_mmap_t* pico_mmap;
266 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
268 if ((pico_mmap->requested_map == addr))
270 unsigned int ptr_aligned, tmp;
271 unsigned int currentHandle;
272 unsigned int perm = 0b011;
277 size = (size + 0xFFF) & ~0xFFF;
278 pico_mmap->buffer = malloc(size + 0x1000);
279 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
281 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
283 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
286 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
290 svcCloseHandle(currentHandle);
291 return (void*)pico_mmap->requested_map;
299 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
301 if (ctr_svchack_successful)
303 pico_mmap_t* pico_mmap;
305 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
307 if ((pico_mmap->requested_map == (unsigned int)ptr))
309 unsigned int ptr_aligned;
310 unsigned int currentHandle;
313 oldsize = (oldsize + 0xFFF) & ~0xFFF;
314 newsize = (newsize + 0xFFF) & ~0xFFF;
315 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
317 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
319 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
321 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
325 pico_mmap->buffer = tmp;
326 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
328 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
330 svcCloseHandle(currentHandle);
337 return realloc(ptr, newsize);
340 void plat_munmap(void *ptr, size_t size)
342 if (ctr_svchack_successful)
344 pico_mmap_t* pico_mmap;
346 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
348 if ((pico_mmap->requested_map == (unsigned int)ptr))
350 unsigned int ptr_aligned;
351 unsigned int currentHandle;
353 size = (size + 0xFFF) & ~0xFFF;
354 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
356 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
358 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
360 svcCloseHandle(currentHandle);
362 free(pico_mmap->buffer);
363 pico_mmap->buffer = NULL;
373 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
375 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
379 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
380 if (ret == MAP_FAILED) {
382 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
386 if (addr != 0 && ret != (void *)addr) {
388 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
400 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
403 void *ret = mremap(ptr, oldsize, newsize, 0);
404 if (ret == MAP_FAILED)
410 size_t preserve_size;
412 preserve_size = oldsize;
413 if (preserve_size > newsize)
414 preserve_size = newsize;
415 tmp = malloc(preserve_size);
418 memcpy(tmp, ptr, preserve_size);
420 munmap(ptr, oldsize);
421 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
422 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
423 if (ret == MAP_FAILED) {
427 memcpy(ret, tmp, preserve_size);
433 void plat_munmap(void *ptr, size_t size)
440 // if NULL is returned, static buffer is used
441 void *plat_mem_get_for_drc(size_t size)
445 sceKernelGetMemBlockBase(sceBlock, &mem);
450 int plat_mem_set_exec(void *ptr, size_t size)
454 DWORD oldProtect = 0;
455 ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, &oldProtect);
456 if (ret == 0 && log_cb)
457 log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
460 if (ctr_svchack_successful)
462 unsigned int currentHandle;
463 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
464 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
465 size, MEMOP_PROT, 0b111);
466 svcCloseHandle(currentHandle);
467 ctr_flush_invalidate_cache();
473 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
478 ret = sceKernelOpenVMDomain();
480 ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
481 if (ret != 0 && log_cb)
482 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
487 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
489 struct retro_system_av_info av_info;
491 memset(vout_buf, 0, 320 * 240 * 2);
492 vout_width = is_32cols ? 256 : 320;
493 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
494 if (show_overscan == true) line_count += 16;
495 if (show_overscan == true) start_line -= 8;
497 vout_height = line_count;
498 vout_offset = vout_width * start_line;
500 // Update the geometry
501 retro_get_system_av_info(&av_info);
502 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
505 void emu_32x_startup(void)
509 void lprintf(const char *fmt, ...)
514 vsprintf(buffer, fmt, ap);
515 /* TODO - add 'level' param for warning/error messages? */
517 log_cb(RETRO_LOG_INFO, "%s", buffer);
522 void retro_set_environment(retro_environment_t cb)
524 static const struct retro_variable vars[] = {
525 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
526 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
527 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
528 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
529 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
530 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
531 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
532 { "picodrive_overclk68k", "68k overclock; disabled|+25%|+50%|+75%|+100%|+200%|+400%" },
534 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
541 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
544 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
545 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
546 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
547 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
548 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
550 unsigned retro_api_version(void)
552 return RETRO_API_VERSION;
555 void retro_set_controller_port_device(unsigned port, unsigned device)
559 void retro_get_system_info(struct retro_system_info *info)
561 memset(info, 0, sizeof(*info));
562 info->library_name = "PicoDrive";
564 #define GIT_VERSION ""
566 info->library_version = VERSION GIT_VERSION;
567 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
568 info->need_fullpath = true;
571 void retro_get_system_av_info(struct retro_system_av_info *info)
575 memset(info, 0, sizeof(*info));
576 info->timing.fps = Pico.m.pal ? 50 : 60;
577 info->timing.sample_rate = 44100;
578 info->geometry.base_width = vout_width;
579 info->geometry.base_height = vout_height;
580 info->geometry.max_width = vout_width;
581 info->geometry.max_height = vout_height;
583 common_width = vout_width;
584 if (user_vout_width != 0)
585 common_width = user_vout_width;
587 info->geometry.aspect_ratio = common_width / vout_height;
591 struct savestate_state {
592 const char *load_buf;
598 size_t state_read(void *p, size_t size, size_t nmemb, void *file)
600 struct savestate_state *state = file;
601 size_t bsize = size * nmemb;
603 if (state->pos + bsize > state->size) {
605 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
606 state->pos + bsize, state->size);
607 bsize = state->size - state->pos;
612 memcpy(p, state->load_buf + state->pos, bsize);
617 size_t state_write(void *p, size_t size, size_t nmemb, void *file)
619 struct savestate_state *state = file;
620 size_t bsize = size * nmemb;
622 if (state->pos + bsize > state->size) {
624 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
625 state->pos + bsize, state->size);
626 bsize = state->size - state->pos;
631 memcpy(state->save_buf + state->pos, p, bsize);
636 size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
638 struct savestate_state *state = file;
639 size_t bsize = size * nmemb;
645 size_t state_eof(void *file)
647 struct savestate_state *state = file;
649 return state->pos >= state->size;
652 int state_fseek(void *file, long offset, int whence)
654 struct savestate_state *state = file;
661 state->pos += offset;
664 state->pos = state->size + offset;
667 return (int)state->pos;
670 /* savestate sizes vary wildly depending if cd/32x or
671 * carthw is active, so run the whole thing to get size */
672 size_t retro_serialize_size(void)
674 struct savestate_state state = { 0, };
677 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
684 bool retro_serialize(void *data, size_t size)
686 struct savestate_state state = { 0, };
689 state.save_buf = data;
693 ret = PicoStateFP(&state, 1, NULL, state_write,
698 bool retro_unserialize(const void *data, size_t size)
700 struct savestate_state state = { 0, };
703 state.load_buf = data;
707 ret = PicoStateFP(&state, 0, state_read, NULL,
708 state_eof, state_fseek);
719 extern void decode(char *buff, patch *dest);
720 extern uint16_t m68k_read16(uint32_t a);
721 extern void m68k_write16(uint32_t a, uint16_t d);
723 void retro_cheat_reset(void)
728 for (i = 0; i < PicoPatchCount; i++)
730 addr = PicoPatches[i].addr;
731 if (addr < Pico.romsize) {
732 if (PicoPatches[i].active)
733 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
735 if (PicoPatches[i].active)
736 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
743 void retro_cheat_set(unsigned index, bool enabled, const char *code)
746 int array_len = PicoPatchCount;
750 if (code=='\0') return;
751 strcpy(codeCopy,code);
752 buff = strtok(codeCopy,"+");
757 if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
759 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
763 /* code was good, add it */
764 if (array_len < PicoPatchCount + 1)
769 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
771 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
776 strcpy(PicoPatches[PicoPatchCount].code, buff);
778 PicoPatches[PicoPatchCount].active = enabled;
779 PicoPatches[PicoPatchCount].addr = pt.addr;
780 PicoPatches[PicoPatchCount].data = pt.data;
781 PicoPatches[PicoPatchCount].comp = pt.comp;
782 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
783 PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
785 PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
788 buff = strtok(NULL,"+");
792 /* multidisk support */
793 static bool disk_ejected;
794 static unsigned int disk_current_index;
795 static unsigned int disk_count;
796 static struct disks_state {
800 static bool disk_set_eject_state(bool ejected)
803 disk_ejected = ejected;
807 static bool disk_get_eject_state(void)
812 static unsigned int disk_get_image_index(void)
814 return disk_current_index;
817 static bool disk_set_image_index(unsigned int index)
819 enum cd_img_type cd_type;
822 if (index >= sizeof(disks) / sizeof(disks[0]))
825 if (disks[index].fname == NULL) {
827 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
829 // RetroArch specifies "no disk" with index == count,
830 // so don't fail here..
831 disk_current_index = index;
836 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
840 cd_type = PicoCdCheck(disks[index].fname, NULL);
841 if (cd_type != CIT_NOT_CD)
842 ret = cdd_load(disks[index].fname, cd_type);
845 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
849 disk_current_index = index;
853 static unsigned int disk_get_num_images(void)
858 static bool disk_replace_image_index(unsigned index,
859 const struct retro_game_info *info)
863 if (index >= sizeof(disks) / sizeof(disks[0]))
866 if (disks[index].fname != NULL)
867 free(disks[index].fname);
868 disks[index].fname = NULL;
871 disks[index].fname = strdup(info->path);
872 if (index == disk_current_index)
873 ret = disk_set_image_index(index);
879 static bool disk_add_image_index(void)
881 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
888 static struct retro_disk_control_callback disk_control = {
889 disk_set_eject_state,
890 disk_get_eject_state,
891 disk_get_image_index,
892 disk_set_image_index,
894 disk_replace_image_index,
895 disk_add_image_index,
898 static void disk_tray_open(void)
901 log_cb(RETRO_LOG_INFO, "cd tray open\n");
905 static void disk_tray_close(void)
908 log_cb(RETRO_LOG_INFO, "cd tray close\n");
913 static const char * const biosfiles_us[] = {
914 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
916 static const char * const biosfiles_eu[] = {
917 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
919 static const char * const biosfiles_jp[] = {
920 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
923 static void make_system_path(char *buf, size_t buf_size,
924 const char *name, const char *ext)
926 const char *dir = NULL;
928 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
929 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
932 snprintf(buf, buf_size, "%s%s", name, ext);
936 static const char *find_bios(int *region, const char *cd_fname)
938 const char * const *files;
939 static char path[256];
943 if (*region == 4) { // US
944 files = biosfiles_us;
945 count = sizeof(biosfiles_us) / sizeof(char *);
946 } else if (*region == 8) { // EU
947 files = biosfiles_eu;
948 count = sizeof(biosfiles_eu) / sizeof(char *);
949 } else if (*region == 1 || *region == 2) {
950 files = biosfiles_jp;
951 count = sizeof(biosfiles_jp) / sizeof(char *);
956 for (i = 0; i < count; i++)
958 make_system_path(path, sizeof(path), files[i], ".bin");
959 f = fopen(path, "rb");
963 make_system_path(path, sizeof(path), files[i], ".zip");
964 f = fopen(path, "rb");
971 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
979 bool retro_load_game(const struct retro_game_info *info)
981 enum media_type_e media_type;
982 static char carthw_path[256];
985 struct retro_input_descriptor desc[] = {
986 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
987 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
988 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
989 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
990 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
991 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
992 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
993 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
994 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
995 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
996 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
997 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
999 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1000 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1001 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1002 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1003 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
1004 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
1005 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
1006 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
1007 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
1008 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
1009 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
1010 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
1015 struct retro_input_descriptor desc_sms[] = {
1016 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1017 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1018 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1019 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1020 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1021 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1022 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1024 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1025 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1026 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1027 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1028 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1029 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1030 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1035 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1036 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1038 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1042 if (info == NULL || info->path == NULL) {
1044 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1048 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1049 if (disks[i].fname != NULL) {
1050 free(disks[i].fname);
1051 disks[i].fname = NULL;
1055 disk_current_index = 0;
1057 disks[0].fname = strdup(info->path);
1059 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1061 media_type = PicoLoadMedia(info->path, carthw_path,
1064 switch (media_type) {
1067 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1071 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1073 case PM_BAD_CD_NO_BIOS:
1075 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1079 log_cb(RETRO_LOG_ERROR, "Load error\n");
1085 if (media_type == PM_MARK3)
1086 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1088 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1092 PicoIn.writeSound = snd_write;
1093 memset(sndBuffer, 0, sizeof(sndBuffer));
1094 PicoIn.sndOut = sndBuffer;
1100 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1105 void retro_unload_game(void)
1109 unsigned retro_get_region(void)
1111 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1114 void *retro_get_memory_data(unsigned type)
1120 case RETRO_MEMORY_SAVE_RAM:
1121 if (PicoIn.AHW & PAHW_MCD)
1122 data = Pico_mcd->bram;
1124 data = Pico.sv.data;
1126 case RETRO_MEMORY_SYSTEM_RAM:
1127 if (PicoIn.AHW & PAHW_SMS)
1128 data = PicoMem.zram;
1140 size_t retro_get_memory_size(unsigned type)
1147 case RETRO_MEMORY_SAVE_RAM:
1148 if (PicoIn.AHW & PAHW_MCD)
1152 if (Pico.m.frame_count == 0)
1153 return Pico.sv.size;
1155 // if game doesn't write to sram, don't report it to
1156 // libretro so that RA doesn't write out zeroed .srm
1157 for (i = 0, sum = 0; i < Pico.sv.size; i++)
1158 sum |= Pico.sv.data[i];
1160 return (sum != 0) ? Pico.sv.size : 0;
1162 case RETRO_MEMORY_SYSTEM_RAM:
1163 if (PicoIn.AHW & PAHW_SMS)
1166 return sizeof(PicoMem.ram);
1174 void retro_reset(void)
1179 static const unsigned short retro_pico_map[] = {
1193 #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1195 static void snd_write(int len)
1197 audio_batch_cb(PicoIn.sndOut, len / 4);
1200 static enum input_device input_name_to_val(const char *name)
1202 if (strcmp(name, "3 button pad") == 0)
1203 return PICO_INPUT_PAD_3BTN;
1204 if (strcmp(name, "6 button pad") == 0)
1205 return PICO_INPUT_PAD_6BTN;
1206 if (strcmp(name, "None") == 0)
1207 return PICO_INPUT_NOTHING;
1210 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1211 return PICO_INPUT_PAD_3BTN;
1214 static void update_variables(void)
1216 struct retro_variable var;
1217 int OldPicoRegionOverride;
1218 float old_user_vout_width;
1221 var.key = "picodrive_input1";
1222 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1223 PicoSetInputDevice(0, input_name_to_val(var.value));
1226 var.key = "picodrive_input2";
1227 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1228 PicoSetInputDevice(1, input_name_to_val(var.value));
1231 var.key = "picodrive_sprlim";
1232 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1233 if (strcmp(var.value, "enabled") == 0)
1234 PicoIn.opt |= POPT_DIS_SPRITE_LIM;
1236 PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
1240 var.key = "picodrive_ramcart";
1241 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1242 if (strcmp(var.value, "enabled") == 0)
1243 PicoIn.opt |= POPT_EN_MCD_RAMCART;
1245 PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
1248 OldPicoRegionOverride = PicoIn.regionOverride;
1250 var.key = "picodrive_region";
1251 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1252 if (strcmp(var.value, "Auto") == 0)
1253 PicoIn.regionOverride = 0;
1254 else if (strcmp(var.value, "Japan NTSC") == 0)
1255 PicoIn.regionOverride = 1;
1256 else if (strcmp(var.value, "Japan PAL") == 0)
1257 PicoIn.regionOverride = 2;
1258 else if (strcmp(var.value, "US") == 0)
1259 PicoIn.regionOverride = 4;
1260 else if (strcmp(var.value, "Europe") == 0)
1261 PicoIn.regionOverride = 8;
1264 // Update region, fps and sound flags if needed
1265 if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
1272 old_user_vout_width = user_vout_width;
1274 var.key = "picodrive_aspect";
1275 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1276 if (strcmp(var.value, "4/3") == 0)
1277 user_vout_width = VOUT_4_3;
1278 else if (strcmp(var.value, "CRT") == 0)
1279 user_vout_width = VOUT_CRT;
1281 user_vout_width = VOUT_PAR;
1285 var.key = "picodrive_overscan";
1286 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1287 if (strcmp(var.value, "enabled") == 0)
1288 show_overscan = true;
1290 show_overscan = false;
1293 if (user_vout_width != old_user_vout_width)
1295 // Update the geometry
1296 struct retro_system_av_info av_info;
1297 retro_get_system_av_info(&av_info);
1298 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1302 var.key = "picodrive_overclk68k";
1303 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1304 PicoIn.overclockM68k = 0;
1305 if (var.value[0] == '+')
1306 PicoIn.overclockM68k = atoi(var.value + 1);
1311 var.key = "picodrive_drc";
1312 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1313 if (strcmp(var.value, "enabled") == 0)
1314 PicoIn.opt |= POPT_EN_DRC;
1316 PicoIn.opt &= ~POPT_EN_DRC;
1320 if(!ctr_svchack_successful)
1321 PicoIn.opt &= ~POPT_EN_DRC;
1325 void retro_run(void)
1327 bool updated = false;
1330 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1335 PicoIn.pad[0] = PicoIn.pad[1] = 0;
1336 for (pad = 0; pad < 2; pad++)
1337 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1338 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1339 PicoIn.pad[pad] |= retro_pico_map[i];
1344 video_cb((short *)vout_buf + vout_offset,
1345 vout_width, vout_height, vout_width * 2);
1348 void retro_init(void)
1350 struct retro_log_callback log;
1354 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1356 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1361 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1364 ctr_svchack_successful = ctr_svchack_init();
1366 sceBlock = getVMBlock();
1369 PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
1370 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1371 | POPT_EN_32X|POPT_EN_PWM
1372 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1375 if (ctr_svchack_successful)
1377 PicoIn.opt |= POPT_EN_DRC;
1379 PicoIn.sndRate = 44100;
1380 PicoIn.autoRgnOrder = 0x184; // US, EU, JP
1385 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1387 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1391 PicoDrawSetOutFormat(PDF_RGB555, 0);
1392 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1394 //PicoIn.osdMessage = plat_status_msg_busy_next;
1395 PicoIn.mcdTrayOpen = disk_tray_open;
1396 PicoIn.mcdTrayClose = disk_tray_close;
1401 void retro_deinit(void)
1404 linearFree(vout_buf);
1412 // vim:shiftwidth=3:ts=3:expandtab