12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442144314441445144614471448144914501451145214531454145514561457145814591460146114621463146414651466146714681469147014711472147314741475147614771478147914801481148214831484148514861487148814891490149114921493149414951496149714981499150015011502150315041505150615071508150915101511151215131514151515161517151815191520152115221523152415251526152715281529153015311532153315341535153615371538153915401541154215431544154515461547154815491550155115521553155415551556155715581559156015611562156315641565156615671568156915701571157215731574157515761577157815791580158115821583158415851586158715881589159015911592159315941595159615971598159916001601160216031604160516061607160816091610161116121613161416151616161716181619162016211622162316241625162616271628162916301631163216331634163516361637163816391640164116421643164416451646164716481649165016511652165316541655165616571658165916601661166216631664166516661667166816691670167116721673167416751676167716781679168016811682168316841685168616871688168916901691169216931694169516961697169816991700170117021703170417051706170717081709171017111712171317141715171617171718171917201721172217231724172517261727172817291730173117321733173417351736173717381739174017411742174317441745174617471748174917501751175217531754175517561757175817591760176117621763176417651766176717681769177017711772177317741775177617771778177917801781178217831784178517861787178817891790179117921793179417951796179717981799180018011802180318041805180618071808180918101811181218131814181518161817181818191820182118221823182418251826182718281829183018311832183318341835183618371838183918401841184218431844184518461847184818491850185118521853 |
- /*
- * libretro core glue for PicoDrive
- * (C) notaz, 2013
- * (C) aliaspider, 2016
- * (C) Daniel De Matteis, 2013
- * (C) kub, 2020
- *
- * This work is licensed under the terms of MAME license.
- * See COPYING file in the top-level directory.
- */
- #define _GNU_SOURCE 1 // mremap
- #include <stdio.h>
- #include <stdlib.h>
- #include <stdarg.h>
- #include <string.h>
- #ifndef _WIN32
- #ifndef NO_MMAP
- #ifdef __SWITCH__
- #include "switch/mman.h"
- #else
- #include <sys/mman.h>
- #endif
- #endif
- #else
- #include <io.h>
- #include <windows.h>
- #include <sys/types.h>
- #endif
- #include <errno.h>
- #ifdef __MACH__
- #include <libkern/OSCacheControl.h>
- #endif
- #ifdef USE_LIBRETRO_VFS
- #include "file_stream_transforms.h"
- #endif
- #if defined(RENDER_GSKIT_PS2)
- #include <malloc.h>
- #include "libretro-common/include/libretro_gskit_ps2.h"
- #include "ps2/asm.h"
- #endif
- #ifdef _3DS
- #include "3ds/3ds_utils.h"
- #define MEMOP_MAP 4
- #define MEMOP_UNMAP 5
- #define MEMOP_PROT 6
- int svcDuplicateHandle(unsigned int* out, unsigned int original);
- int svcCloseHandle(unsigned int handle);
- int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
- unsigned int size, unsigned int type, unsigned int perm);
- void* linearMemAlign(size_t size, size_t alignment);
- void linearFree(void* mem);
- static int ctr_svchack_successful = 0;
- #elif defined(VITA)
- #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
- #include <psp2/kernel/sysmem.h>
- static int sceBlock;
- int getVMBlock();
- int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
- #endif
- #include "libretro_core_options.h"
- #include <pico/pico_int.h>
- #include <pico/state.h>
- #include <pico/patch.h>
- #include <pico/sound/mix.h>
- #include "../common/input_pico.h"
- #include "../common/version.h"
- #include <libretro.h>
- static retro_log_printf_t log_cb;
- static retro_video_refresh_t video_cb;
- static retro_input_poll_t input_poll_cb;
- static retro_input_state_t input_state_cb;
- static retro_environment_t environ_cb;
- static retro_audio_sample_batch_t audio_batch_cb;
- #define VOUT_MAX_WIDTH 320
- #define VOUT_32COL_WIDTH 256
- #define VOUT_MAX_HEIGHT 240
- #define INITIAL_SND_RATE 44100
- static const float VOUT_PAR = 0.0;
- static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
- static const float VOUT_CRT = (224.0f * 1.29911f);
- static bool show_overscan = false;
- static bool old_show_overscan = false;
- /* Required to allow on the fly changes to 'show overscan' */
- static int vm_current_start_line = -1;
- static int vm_current_line_count = -1;
- static int vm_current_is_32cols = -1;
- static int vout_16bit = 1;
- static int vout_format = PDF_RGB555;
- static void *vout_buf;
- static int vout_width, vout_height, vout_offset;
- static float user_vout_width = 0.0;
- #if defined(RENDER_GSKIT_PS2)
- #define VOUT_8BIT_WIDTH 328
- #define VOUT_8BIT_HEIGHT 256
- RETRO_HW_RENDER_INTEFACE_GSKIT_PS2 *ps2 = NULL;
- static void *retro_palette;
- static struct retro_hw_ps2_insets padding;
- #endif
- static short ALIGNED(4) sndBuffer[2*INITIAL_SND_RATE/50];
- static void snd_write(int len);
- char **g_argv;
- #ifdef _WIN32
- #define SLASH '\\'
- #else
- #define SLASH '/'
- #endif
- /* Frameskipping Support */
- static unsigned frameskip_type = 0;
- static unsigned frameskip_threshold = 0;
- static uint16_t frameskip_counter = 0;
- static bool retro_audio_buff_active = false;
- static unsigned retro_audio_buff_occupancy = 0;
- static bool retro_audio_buff_underrun = false;
- /* Maximum number of consecutive frames that
- * can be skipped */
- #define FRAMESKIP_MAX 60
- static unsigned audio_latency = 0;
- static bool update_audio_latency = false;
- static void retro_audio_buff_status_cb(
- bool active, unsigned occupancy, bool underrun_likely)
- {
- retro_audio_buff_active = active;
- retro_audio_buff_occupancy = occupancy;
- retro_audio_buff_underrun = underrun_likely;
- }
- static void init_frameskip(void)
- {
- if (frameskip_type > 0)
- {
- struct retro_audio_buffer_status_callback buf_status_cb;
- buf_status_cb.callback = retro_audio_buff_status_cb;
- if (!environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK,
- &buf_status_cb))
- {
- if (log_cb)
- log_cb(RETRO_LOG_WARN, "Frameskip disabled - frontend does not support audio buffer status monitoring.\n");
- retro_audio_buff_active = false;
- retro_audio_buff_occupancy = 0;
- retro_audio_buff_underrun = false;
- audio_latency = 0;
- }
- else
- {
- /* Frameskip is enabled - increase frontend
- * audio latency to minimise potential
- * buffer underruns */
- float frame_time_msec = 1000.0f / (Pico.m.pal ? 50.0f : 60.0f);
- /* Set latency to 6x current frame time... */
- audio_latency = (unsigned)((6.0f * frame_time_msec) + 0.5f);
- /* ...then round up to nearest multiple of 32 */
- audio_latency = (audio_latency + 0x1F) & ~0x1F;
- }
- }
- else
- {
- environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK, NULL);
- audio_latency = 0;
- }
- update_audio_latency = true;
- }
- /* functions called by the core */
- void cache_flush_d_inval_i(void *start, void *end)
- {
- #ifdef __arm__
- size_t len = (char *)end - (char *)start;
- (void)len;
- #if defined(__BLACKBERRY_QNX__)
- msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
- #elif defined(__MACH__)
- sys_dcache_flush(start, len);
- sys_icache_invalidate(start, len);
- #elif defined(_3DS)
- ctr_flush_invalidate_cache();
- #elif defined(VITA)
- sceKernelSyncVMDomain(sceBlock, start, len);
- #else
- __clear_cache(start, end);
- #endif
- #endif
- }
- #ifdef RENDER_GSKIT_PS2
- /* ee-gcc is version 3.2, where these aren't yet defined */
- void __builtin___clear_cache(void *b, void *e)
- {
- #if 0 /* which of these is overall faster for lots of small cache updates? */
- SyncDCache(b, e);
- #else
- FlushCache(0); /* WRITEBACK_DCACHE */
- #endif
- FlushCache(2); /* INVALIDATE_ICACHE */
- }
- int __builtin_parity(unsigned v)
- {
- /* credits to bit twiddling hacks, https://graphics.stanford.edu/~seander/bithacks.html */
- v ^= v >> 16;
- v ^= v >> 8;
- v ^= v >> 4;
- return (0x6996 >> (v&0xf)) & 1;
- }
- #endif
- #ifdef __MACH__
- /* calls to this may be generated by the compiler, but it's missing in libc? */
- void __clear_cache(void *start, void *end)
- {
- size_t len = (char *)end - (char *)start;
- sys_dcache_flush(start, len);
- sys_icache_invalidate(start, len);
- }
- #endif
- #ifdef _WIN32
- /* mmap() replacement for Windows
- *
- * Author: Mike Frysinger <vapier@gentoo.org>
- * Placed into the public domain
- */
- /* References:
- * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
- * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
- * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
- * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
- */
- #define PROT_READ 0x1
- #define PROT_WRITE 0x2
- /* This flag is only available in WinXP+ */
- #ifdef FILE_MAP_EXECUTE
- #define PROT_EXEC 0x4
- #else
- #define PROT_EXEC 0x0
- #define FILE_MAP_EXECUTE 0
- #endif
- #define MAP_SHARED 0x01
- #define MAP_PRIVATE 0x02
- #define MAP_ANONYMOUS 0x20
- #define MAP_ANON MAP_ANONYMOUS
- #define MAP_FAILED ((void *) -1)
- #ifdef __USE_FILE_OFFSET64
- # define DWORD_HI(x) (x >> 32)
- # define DWORD_LO(x) ((x) & 0xffffffff)
- #else
- # define DWORD_HI(x) (0)
- # define DWORD_LO(x) (x)
- #endif
- static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
- {
- uint32_t flProtect, dwDesiredAccess;
- off_t end;
- HANDLE mmap_fd, h;
- void *ret;
- if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
- return MAP_FAILED;
- if (fd == -1) {
- if (!(flags & MAP_ANON) || offset)
- return MAP_FAILED;
- } else if (flags & MAP_ANON)
- return MAP_FAILED;
- if (prot & PROT_WRITE) {
- if (prot & PROT_EXEC)
- flProtect = PAGE_EXECUTE_READWRITE;
- else
- flProtect = PAGE_READWRITE;
- } else if (prot & PROT_EXEC) {
- if (prot & PROT_READ)
- flProtect = PAGE_EXECUTE_READ;
- else if (prot & PROT_EXEC)
- flProtect = PAGE_EXECUTE;
- } else
- flProtect = PAGE_READONLY;
- end = length + offset;
- if (fd == -1)
- mmap_fd = INVALID_HANDLE_VALUE;
- else
- mmap_fd = (HANDLE)_get_osfhandle(fd);
- h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
- if (h == NULL)
- return MAP_FAILED;
- if (prot & PROT_WRITE)
- dwDesiredAccess = FILE_MAP_WRITE;
- else
- dwDesiredAccess = FILE_MAP_READ;
- if (prot & PROT_EXEC)
- dwDesiredAccess |= FILE_MAP_EXECUTE;
- if (flags & MAP_PRIVATE)
- dwDesiredAccess |= FILE_MAP_COPY;
- ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
- if (ret == NULL) {
- CloseHandle(h);
- ret = MAP_FAILED;
- }
- return ret;
- }
- static void munmap(void *addr, size_t length)
- {
- UnmapViewOfFile(addr);
- /* ruh-ro, we leaked handle from CreateFileMapping() ... */
- }
- #elif defined(NO_MMAP)
- #define PROT_EXEC 0x04
- #define MAP_FAILED 0
- #define PROT_READ 0
- #define PROT_WRITE 0
- #define MAP_PRIVATE 0
- #define MAP_ANONYMOUS 0
- void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
- {
- return malloc(len);
- }
- void munmap(void *base_addr, size_t len)
- {
- free(base_addr);
- }
- int mprotect(void *addr, size_t len, int prot)
- {
- /* stub - not really needed at this point since this codepath has no dynarecs */
- return 0;
- }
- #endif
- #ifndef MAP_ANONYMOUS
- #define MAP_ANONYMOUS MAP_ANON
- #endif
- #ifdef _3DS
- typedef struct
- {
- unsigned int requested_map;
- void* buffer;
- }pico_mmap_t;
- pico_mmap_t pico_mmaps[] = {
- {0x02000000, 0},
- {0x06000000, 0},
- {NULL, 0}
- };
- void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
- {
- (void)is_fixed;
- if (ctr_svchack_successful)
- {
- pico_mmap_t* pico_mmap;
- for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
- {
- if ((pico_mmap->requested_map == addr))
- {
- unsigned int ptr_aligned, tmp;
- unsigned int currentHandle;
- unsigned int perm = 0b011;
- if (need_exec)
- perm = 0b111;
- size = (size + 0xFFF) & ~0xFFF;
- pico_mmap->buffer = malloc(size + 0x1000);
- ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
- svcDuplicateHandle(¤tHandle, 0xFFFF8001);
- if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
- {
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
- exit(1);
- }
- svcCloseHandle(currentHandle);
- return (void*)pico_mmap->requested_map;
- }
- }
- }
- return malloc(size);
- }
- void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
- {
- if (ctr_svchack_successful)
- {
- pico_mmap_t* pico_mmap;
- for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
- {
- if ((pico_mmap->requested_map == (unsigned int)ptr))
- {
- unsigned int ptr_aligned;
- unsigned int currentHandle;
- void* tmp;
- oldsize = (oldsize + 0xFFF) & ~0xFFF;
- newsize = (newsize + 0xFFF) & ~0xFFF;
- ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
- svcDuplicateHandle(¤tHandle, 0xFFFF8001);
- svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
- tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
- if(!tmp)
- return NULL;
- pico_mmap->buffer = tmp;
- ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
- svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
- svcCloseHandle(currentHandle);
- return ptr;
- }
- }
- }
- return realloc(ptr, newsize);
- }
- void plat_munmap(void *ptr, size_t size)
- {
- if (ctr_svchack_successful)
- {
- pico_mmap_t* pico_mmap;
- for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
- {
- if ((pico_mmap->requested_map == (unsigned int)ptr))
- {
- unsigned int ptr_aligned;
- unsigned int currentHandle;
- size = (size + 0xFFF) & ~0xFFF;
- ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
- svcDuplicateHandle(¤tHandle, 0xFFFF8001);
- svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
- svcCloseHandle(currentHandle);
- free(pico_mmap->buffer);
- pico_mmap->buffer = NULL;
- return;
- }
- }
- }
- free(ptr);
- }
- #else
- void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
- {
- int flags = MAP_PRIVATE | MAP_ANONYMOUS;
- void *req, *ret;
- req = (void *)(uintptr_t)addr;
- ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
- if (ret == MAP_FAILED) {
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
- return NULL;
- }
- if (addr != 0 && ret != (void *)(uintptr_t)addr) {
- if (log_cb)
- log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
- addr, ret);
- if (is_fixed) {
- munmap(ret, size);
- return NULL;
- }
- }
- return ret;
- }
- void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
- {
- #if defined(__linux__) && !defined(__SWITCH__)
- void *ret = mremap(ptr, oldsize, newsize, 0);
- if (ret == MAP_FAILED)
- return NULL;
- return ret;
- #else
- void *tmp, *ret;
- size_t preserve_size;
- preserve_size = oldsize;
- if (preserve_size > newsize)
- preserve_size = newsize;
- tmp = malloc(preserve_size);
- if (tmp == NULL)
- return NULL;
- memcpy(tmp, ptr, preserve_size);
- munmap(ptr, oldsize);
- ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- if (ret == MAP_FAILED) {
- free(tmp);
- return NULL;
- }
- memcpy(ret, tmp, preserve_size);
- free(tmp);
- return ret;
- #endif
- }
- void plat_munmap(void *ptr, size_t size)
- {
- if (ptr != NULL)
- munmap(ptr, size);
- }
- #endif
- // if NULL is returned, static buffer is used
- void *plat_mem_get_for_drc(size_t size)
- {
- void *mem = NULL;
- #ifdef VITA
- sceKernelGetMemBlockBase(sceBlock, &mem);
- #endif
- return mem;
- }
- int plat_mem_set_exec(void *ptr, size_t size)
- {
- int ret = -1;
- #ifdef _WIN32
- DWORD oldProtect = 0;
- ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, &oldProtect);
- if (ret == 0 && log_cb)
- log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
- GetLastError());
- #elif defined(_3DS)
- if (ctr_svchack_successful)
- {
- unsigned int currentHandle;
- svcDuplicateHandle(¤tHandle, 0xFFFF8001);
- ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
- size, MEMOP_PROT, 0b111);
- svcCloseHandle(currentHandle);
- ctr_flush_invalidate_cache();
- }
- else
- {
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
- exit(1);
- }
- #elif defined(VITA)
- ret = sceKernelOpenVMDomain();
- #else
- ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
- if (ret != 0 && log_cb)
- log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
- #endif
- return ret;
- }
- void emu_video_mode_change(int start_line, int line_count, int is_32cols)
- {
- struct retro_system_av_info av_info;
- vm_current_start_line = start_line;
- vm_current_line_count = line_count;
- vm_current_is_32cols = is_32cols;
- // 8bit renderes create a 328x256 CLUT image, while 16bit creates 320x240 RGB
- vout_16bit = vout_format == PDF_RGB555 || (PicoIn.AHW & PAHW_32X);
- #if defined(RENDER_GSKIT_PS2)
- // calculate the borders of the real image inside the picodrive image
- vout_width = (vout_16bit ? VOUT_MAX_WIDTH : VOUT_8BIT_WIDTH);
- vout_height = (vout_16bit ? VOUT_MAX_HEIGHT : VOUT_8BIT_HEIGHT);
- vout_offset = (vout_16bit ? 0 : 8); // 8bit has 8 px overlap area on the left
- if (is_32cols) {
- // 256x240, with or w/o overlap on the left and 64 px on the right
- padding = (struct retro_hw_ps2_insets){start_line, vout_offset, vout_height - line_count - start_line, vout_width - 256.0f - vout_offset};
- } else {
- // 320x240, with or w/o overlap on the left and none on the right
- padding = (struct retro_hw_ps2_insets){start_line, vout_offset, vout_height - line_count - start_line, vout_width - 320.0f - vout_offset};
- }
- int pxsz = (vout_16bit ? 2 : 1); // pixel size: RGB = 16 bits, CLUT = 8 bits
- memset(vout_buf, 0, pxsz * vout_width * vout_height);
- memset(retro_palette, 0, gsKit_texture_size_ee(16, 16, GS_PSM_CT16));
- PicoDrawSetOutBuf(vout_buf, pxsz * vout_width);
- if (ps2) {
- // prepare image as texture for rendering
- ps2->coreTexture->Width = vout_width;
- ps2->coreTexture->Height = vout_height;
- ps2->coreTexture->PSM = (vout_16bit ? GS_PSM_CT16 : GS_PSM_T8);
- ps2->padding = padding;
- }
- #else
- vout_width = is_32cols ? VOUT_32COL_WIDTH : VOUT_MAX_WIDTH;
- memset(vout_buf, 0, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
- if (vout_16bit)
- PicoDrawSetOutBuf(vout_buf, vout_width * 2);
- if (show_overscan)
- {
- vout_height = line_count + (start_line * 2);
- vout_offset = 0;
- }
- else
- {
- vout_height = line_count;
- /* Note: We multiply by 2 here to account for pitch */
- vout_offset = vout_width * start_line * 2;
- }
- /* Redundant sanity check... */
- vout_height = (vout_height > VOUT_MAX_HEIGHT) ?
- VOUT_MAX_HEIGHT : vout_height;
- vout_offset = (vout_offset > vout_width * (VOUT_MAX_HEIGHT - 1) * 2) ?
- vout_width * (VOUT_MAX_HEIGHT - 1) * 2 : vout_offset;
- #endif
- Pico.m.dirtyPal = 1;
- // Update the geometry
- retro_get_system_av_info(&av_info);
- environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
- }
- void emu_32x_startup(void)
- {
- PicoDrawSetOutFormat(vout_format, 0);
- if ((vm_current_start_line != -1) &&
- (vm_current_line_count != -1) &&
- (vm_current_is_32cols != -1))
- emu_video_mode_change(
- vm_current_start_line,
- vm_current_line_count,
- vm_current_is_32cols);
- }
- void lprintf(const char *fmt, ...)
- {
- char buffer[256];
- va_list ap;
- va_start(ap, fmt);
- vsprintf(buffer, fmt, ap);
- /* TODO - add 'level' param for warning/error messages? */
- if (log_cb)
- log_cb(RETRO_LOG_INFO, "%s", buffer);
- va_end(ap);
- }
- /* libretro */
- void retro_set_environment(retro_environment_t cb)
- {
- #ifdef USE_LIBRETRO_VFS
- struct retro_vfs_interface_info vfs_iface_info;
- #endif
- environ_cb = cb;
- libretro_set_core_options(environ_cb);
- #ifdef USE_LIBRETRO_VFS
- vfs_iface_info.required_interface_version = 1;
- vfs_iface_info.iface = NULL;
- if (environ_cb(RETRO_ENVIRONMENT_GET_VFS_INTERFACE, &vfs_iface_info))
- filestream_vfs_init(&vfs_iface_info);
- #endif
- }
- void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
- void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
- void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
- void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
- void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
- unsigned retro_api_version(void)
- {
- return RETRO_API_VERSION;
- }
- void retro_set_controller_port_device(unsigned port, unsigned device)
- {
- }
- void retro_get_system_info(struct retro_system_info *info)
- {
- memset(info, 0, sizeof(*info));
- info->library_name = "PicoDrive";
- #ifndef GIT_VERSION
- #define _GIT_VERSION ""
- #else
- #define _GIT_VERSION "-" GIT_VERSION
- #endif
- info->library_version = VERSION _GIT_VERSION;
- info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
- info->need_fullpath = true;
- }
- void retro_get_system_av_info(struct retro_system_av_info *info)
- {
- float common_width;
- memset(info, 0, sizeof(*info));
- info->timing.fps = Pico.m.pal ? 50 : 60;
- info->timing.sample_rate = PicoIn.sndRate;
- info->geometry.base_width = vout_width;
- info->geometry.base_height = vout_height;
- info->geometry.max_width = vout_width;
- info->geometry.max_height = vout_height;
- common_width = vout_width;
- if (user_vout_width != 0)
- common_width = user_vout_width;
- info->geometry.aspect_ratio = common_width / vout_height;
- }
- /* savestates */
- struct savestate_state {
- const char *load_buf;
- char *save_buf;
- size_t size;
- size_t pos;
- };
- size_t state_read(void *p, size_t size, size_t nmemb, void *file)
- {
- struct savestate_state *state = file;
- size_t bsize = size * nmemb;
- if (state->pos + bsize > state->size) {
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
- state->pos + bsize, state->size);
- bsize = state->size - state->pos;
- if ((int)bsize <= 0)
- return 0;
- }
- memcpy(p, state->load_buf + state->pos, bsize);
- state->pos += bsize;
- return bsize;
- }
- size_t state_write(void *p, size_t size, size_t nmemb, void *file)
- {
- struct savestate_state *state = file;
- size_t bsize = size * nmemb;
- if (state->pos + bsize > state->size) {
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
- state->pos + bsize, state->size);
- bsize = state->size - state->pos;
- if ((int)bsize <= 0)
- return 0;
- }
- memcpy(state->save_buf + state->pos, p, bsize);
- state->pos += bsize;
- return bsize;
- }
- size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
- {
- struct savestate_state *state = file;
- size_t bsize = size * nmemb;
- state->pos += bsize;
- return bsize;
- }
- size_t state_eof(void *file)
- {
- struct savestate_state *state = file;
- return state->pos >= state->size;
- }
- int state_fseek(void *file, long offset, int whence)
- {
- struct savestate_state *state = file;
- switch (whence) {
- case SEEK_SET:
- state->pos = offset;
- break;
- case SEEK_CUR:
- state->pos += offset;
- break;
- case SEEK_END:
- state->pos = state->size + offset;
- break;
- }
- return (int)state->pos;
- }
- /* savestate sizes vary wildly depending if cd/32x or
- * carthw is active, so run the whole thing to get size */
- size_t retro_serialize_size(void)
- {
- struct savestate_state state = { 0, };
- int ret;
- ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
- if (ret != 0)
- return 0;
- return state.pos;
- }
- bool retro_serialize(void *data, size_t size)
- {
- struct savestate_state state = { 0, };
- int ret;
- state.save_buf = data;
- state.size = size;
- state.pos = 0;
- ret = PicoStateFP(&state, 1, NULL, state_write,
- NULL, state_fseek);
- return ret == 0;
- }
- bool retro_unserialize(const void *data, size_t size)
- {
- struct savestate_state state = { 0, };
- int ret;
- state.load_buf = data;
- state.size = size;
- state.pos = 0;
- ret = PicoStateFP(&state, 0, state_read, NULL,
- state_eof, state_fseek);
- return ret == 0;
- }
- typedef struct patch
- {
- unsigned int addr;
- unsigned short data;
- unsigned char comp;
- } patch;
- extern void decode(char *buff, patch *dest);
- extern uint16_t m68k_read16(uint32_t a);
- extern void m68k_write16(uint32_t a, uint16_t d);
- void retro_cheat_reset(void)
- {
- int i=0;
- unsigned int addr;
- for (i = 0; i < PicoPatchCount; i++)
- {
- addr = PicoPatches[i].addr;
- if (addr < Pico.romsize) {
- if (PicoPatches[i].active)
- *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
- } else {
- if (PicoPatches[i].active)
- m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
- }
- }
- PicoPatchUnload();
- }
- void retro_cheat_set(unsigned index, bool enabled, const char *code)
- {
- patch pt;
- int array_len = PicoPatchCount;
- char codeCopy[256];
- char *buff;
- if (*code == '\0')
- return;
- strcpy(codeCopy, code);
- buff = strtok(codeCopy,"+");
- while (buff != NULL)
- {
- decode(buff, &pt);
- if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
- {
- log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
- return;
- }
- /* code was good, add it */
- if (array_len < PicoPatchCount + 1)
- {
- void *ptr;
- array_len *= 2;
- array_len++;
- ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
- if (ptr == NULL) {
- log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
- return;
- }
- PicoPatches = ptr;
- }
- strcpy(PicoPatches[PicoPatchCount].code, buff);
- PicoPatches[PicoPatchCount].active = enabled;
- PicoPatches[PicoPatchCount].addr = pt.addr;
- PicoPatches[PicoPatchCount].data = pt.data;
- PicoPatches[PicoPatchCount].comp = pt.comp;
- if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
- PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
- else
- PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
- PicoPatchCount++;
- buff = strtok(NULL,"+");
- }
- }
- /* multidisk support */
- static bool disk_ejected;
- static unsigned int disk_current_index;
- static unsigned int disk_count;
- static struct disks_state {
- char *fname;
- } disks[8];
- static bool disk_set_eject_state(bool ejected)
- {
- // TODO?
- disk_ejected = ejected;
- return true;
- }
- static bool disk_get_eject_state(void)
- {
- return disk_ejected;
- }
- static unsigned int disk_get_image_index(void)
- {
- return disk_current_index;
- }
- static bool disk_set_image_index(unsigned int index)
- {
- enum cd_img_type cd_type;
- int ret;
- if (index >= sizeof(disks) / sizeof(disks[0]))
- return false;
- if (disks[index].fname == NULL) {
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
- // RetroArch specifies "no disk" with index == count,
- // so don't fail here..
- disk_current_index = index;
- return true;
- }
- if (log_cb)
- log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
- disks[index].fname);
- ret = -1;
- cd_type = PicoCdCheck(disks[index].fname, NULL);
- if (cd_type != CIT_NOT_CD)
- ret = cdd_load(disks[index].fname, cd_type);
- if (ret != 0) {
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
- return 0;
- }
- disk_current_index = index;
- return true;
- }
- static unsigned int disk_get_num_images(void)
- {
- return disk_count;
- }
- static bool disk_replace_image_index(unsigned index,
- const struct retro_game_info *info)
- {
- bool ret = true;
- if (index >= sizeof(disks) / sizeof(disks[0]))
- return false;
- if (disks[index].fname != NULL)
- free(disks[index].fname);
- disks[index].fname = NULL;
- if (info != NULL) {
- disks[index].fname = strdup(info->path);
- if (index == disk_current_index)
- ret = disk_set_image_index(index);
- }
- return ret;
- }
- static bool disk_add_image_index(void)
- {
- if (disk_count >= sizeof(disks) / sizeof(disks[0]))
- return false;
- disk_count++;
- return true;
- }
- static struct retro_disk_control_callback disk_control = {
- disk_set_eject_state,
- disk_get_eject_state,
- disk_get_image_index,
- disk_set_image_index,
- disk_get_num_images,
- disk_replace_image_index,
- disk_add_image_index,
- };
- static void disk_tray_open(void)
- {
- if (log_cb)
- log_cb(RETRO_LOG_INFO, "cd tray open\n");
- disk_ejected = 1;
- }
- static void disk_tray_close(void)
- {
- if (log_cb)
- log_cb(RETRO_LOG_INFO, "cd tray close\n");
- disk_ejected = 0;
- }
- static const char * const biosfiles_us[] = {
- "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
- };
- static const char * const biosfiles_eu[] = {
- "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
- };
- static const char * const biosfiles_jp[] = {
- "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
- };
- static void make_system_path(char *buf, size_t buf_size,
- const char *name, const char *ext)
- {
- const char *dir = NULL;
- if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
- snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
- }
- else {
- snprintf(buf, buf_size, "%s%s", name, ext);
- }
- }
- static const char *find_bios(int *region, const char *cd_fname)
- {
- const char * const *files;
- static char path[256];
- int i, count;
- FILE *f = NULL;
- if (*region == 4) { // US
- files = biosfiles_us;
- count = sizeof(biosfiles_us) / sizeof(char *);
- } else if (*region == 8) { // EU
- files = biosfiles_eu;
- count = sizeof(biosfiles_eu) / sizeof(char *);
- } else if (*region == 1 || *region == 2) {
- files = biosfiles_jp;
- count = sizeof(biosfiles_jp) / sizeof(char *);
- } else {
- return NULL;
- }
- for (i = 0; i < count; i++)
- {
- make_system_path(path, sizeof(path), files[i], ".bin");
- f = fopen(path, "rb");
- if (f != NULL)
- break;
- make_system_path(path, sizeof(path), files[i], ".zip");
- f = fopen(path, "rb");
- if (f != NULL)
- break;
- }
- if (f != NULL) {
- if (log_cb)
- log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
- fclose(f);
- return path;
- }
- return NULL;
- }
- static void set_memory_maps(void)
- {
- if (PicoIn.AHW & PAHW_MCD)
- {
- const size_t SCD_BIT = 1ULL << 31ULL;
- const uint64_t mem = RETRO_MEMDESC_SYSTEM_RAM;
- struct retro_memory_map mmaps;
- struct retro_memory_descriptor descs[] = {
- { mem, PicoMem.ram, 0, 0xFF0000, 0, 0, 0x10000, "68KRAM" },
- /* virtual address using SCD_BIT so all 512M of prg_ram can be accessed */
- /* at address $80020000 */
- { mem, Pico_mcd->prg_ram, 0, SCD_BIT | 0x020000, 0, 0, 0x80000, "PRGRAM" },
- };
- mmaps.descriptors = descs;
- mmaps.num_descriptors = sizeof(descs) / sizeof(descs[0]);
- environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps);
- }
- }
- bool retro_load_game(const struct retro_game_info *info)
- {
- enum media_type_e media_type;
- static char carthw_path[256];
- size_t i;
- struct retro_input_descriptor desc[] = {
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
- { 0 },
- };
- struct retro_input_descriptor desc_sms[] = {
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
- { 0 },
- };
- enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
- if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
- return false;
- }
- if (info == NULL || info->path == NULL) {
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "info->path required\n");
- return false;
- }
- for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
- if (disks[i].fname != NULL) {
- free(disks[i].fname);
- disks[i].fname = NULL;
- }
- }
- disk_current_index = 0;
- disk_count = 1;
- disks[0].fname = strdup(info->path);
- make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
- media_type = PicoLoadMedia(info->path, carthw_path,
- find_bios, NULL);
- switch (media_type) {
- case PM_BAD_DETECT:
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
- return false;
- case PM_BAD_CD:
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
- return false;
- case PM_BAD_CD_NO_BIOS:
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
- return false;
- case PM_ERROR:
- if (log_cb)
- log_cb(RETRO_LOG_ERROR, "Load error\n");
- return false;
- default:
- break;
- }
- if (media_type == PM_MARK3)
- environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
- else
- environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
- PicoLoopPrepare();
- PicoIn.writeSound = snd_write;
- memset(sndBuffer, 0, sizeof(sndBuffer));
- PicoIn.sndOut = sndBuffer;
- PsndRerate(0);
- /* Setup retro memory maps */
- set_memory_maps();
- init_frameskip();
- return true;
- }
- bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
- {
- return false;
- }
- void retro_unload_game(void)
- {
- }
- unsigned retro_get_region(void)
- {
- return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
- }
- void *retro_get_memory_data(unsigned type)
- {
- uint8_t* data;
- switch(type)
- {
- case RETRO_MEMORY_SAVE_RAM:
- /* Note: MCD RAM cart uses Pico.sv.data */
- if ((PicoIn.AHW & PAHW_MCD) &&
- !(PicoIn.opt & POPT_EN_MCD_RAMCART))
- data = Pico_mcd->bram;
- else
- data = Pico.sv.data;
- break;
- case RETRO_MEMORY_SYSTEM_RAM:
- if (PicoIn.AHW & PAHW_SMS)
- data = PicoMem.zram;
- else
- data = PicoMem.ram;
- break;
- default:
- data = NULL;
- break;
- }
- return data;
- }
- size_t retro_get_memory_size(unsigned type)
- {
- unsigned int i;
- int sum;
- switch(type)
- {
- case RETRO_MEMORY_SAVE_RAM:
- if (PicoIn.AHW & PAHW_MCD)
- {
- if (PicoIn.opt & POPT_EN_MCD_RAMCART)
- return 0x12000;
- else /* bram */
- return 0x2000;
- }
- if (Pico.m.frame_count == 0)
- return Pico.sv.size;
- // if game doesn't write to sram, don't report it to
- // libretro so that RA doesn't write out zeroed .srm
- for (i = 0, sum = 0; i < Pico.sv.size; i++)
- sum |= Pico.sv.data[i];
- return (sum != 0) ? Pico.sv.size : 0;
- case RETRO_MEMORY_SYSTEM_RAM:
- if (PicoIn.AHW & PAHW_SMS)
- return 0x2000;
- else
- return sizeof(PicoMem.ram);
- default:
- return 0;
- }
- }
- void retro_reset(void)
- {
- PicoReset();
- }
- static const unsigned short retro_pico_map[] = {
- 1 << GBTN_B,
- 1 << GBTN_A,
- 1 << GBTN_MODE,
- 1 << GBTN_START,
- 1 << GBTN_UP,
- 1 << GBTN_DOWN,
- 1 << GBTN_LEFT,
- 1 << GBTN_RIGHT,
- 1 << GBTN_C,
- 1 << GBTN_Y,
- 1 << GBTN_X,
- 1 << GBTN_Z,
- };
- #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
- static void snd_write(int len)
- {
- audio_batch_cb(PicoIn.sndOut, len / 4);
- }
- static enum input_device input_name_to_val(const char *name)
- {
- if (strcmp(name, "3 button pad") == 0)
- return PICO_INPUT_PAD_3BTN;
- if (strcmp(name, "6 button pad") == 0)
- return PICO_INPUT_PAD_6BTN;
- if (strcmp(name, "None") == 0)
- return PICO_INPUT_NOTHING;
- if (log_cb)
- log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
- return PICO_INPUT_PAD_3BTN;
- }
- static void update_variables(bool first_run)
- {
- struct retro_variable var;
- int OldPicoRegionOverride;
- float old_user_vout_width;
- unsigned old_frameskip_type;
- int old_vout_format;
- double new_sound_rate;
- unsigned short old_snd_filter;
- int32_t old_snd_filter_range;
- var.value = NULL;
- var.key = "picodrive_input1";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
- PicoSetInputDevice(0, input_name_to_val(var.value));
- var.value = NULL;
- var.key = "picodrive_input2";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
- PicoSetInputDevice(1, input_name_to_val(var.value));
- var.value = NULL;
- var.key = "picodrive_sprlim";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- if (strcmp(var.value, "enabled") == 0)
- PicoIn.opt |= POPT_DIS_SPRITE_LIM;
- else
- PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
- }
- var.value = NULL;
- var.key = "picodrive_ramcart";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- if (strcmp(var.value, "enabled") == 0)
- PicoIn.opt |= POPT_EN_MCD_RAMCART;
- else
- PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
- }
- OldPicoRegionOverride = PicoIn.regionOverride;
- var.value = NULL;
- var.key = "picodrive_region";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- if (strcmp(var.value, "Auto") == 0)
- PicoIn.regionOverride = 0;
- else if (strcmp(var.value, "Japan NTSC") == 0)
- PicoIn.regionOverride = 1;
- else if (strcmp(var.value, "Japan PAL") == 0)
- PicoIn.regionOverride = 2;
- else if (strcmp(var.value, "US") == 0)
- PicoIn.regionOverride = 4;
- else if (strcmp(var.value, "Europe") == 0)
- PicoIn.regionOverride = 8;
- }
- // Update region, fps and sound flags if needed
- if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
- {
- PicoDetectRegion();
- PicoLoopPrepare();
- PsndRerate(1);
- }
- old_user_vout_width = user_vout_width;
- var.value = NULL;
- var.key = "picodrive_aspect";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- if (strcmp(var.value, "4/3") == 0)
- user_vout_width = VOUT_4_3;
- else if (strcmp(var.value, "CRT") == 0)
- user_vout_width = VOUT_CRT;
- else
- user_vout_width = VOUT_PAR;
- }
- if (user_vout_width != old_user_vout_width)
- {
- // Update the geometry
- struct retro_system_av_info av_info;
- retro_get_system_av_info(&av_info);
- environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
- }
- old_show_overscan = show_overscan;
- var.value = NULL;
- var.key = "picodrive_overscan";
- show_overscan = false;
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- if (strcmp(var.value, "enabled") == 0)
- show_overscan = true;
- }
- var.value = NULL;
- var.key = "picodrive_overclk68k";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- PicoIn.overclockM68k = 0;
- if (var.value[0] == '+')
- PicoIn.overclockM68k = atoi(var.value + 1);
- }
- #ifdef DRC_SH2
- var.value = NULL;
- var.key = "picodrive_drc";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- if (strcmp(var.value, "enabled") == 0)
- PicoIn.opt |= POPT_EN_DRC;
- else
- PicoIn.opt &= ~POPT_EN_DRC;
- }
- #endif
- #ifdef _3DS
- if(!ctr_svchack_successful)
- PicoIn.opt &= ~POPT_EN_DRC;
- #endif
- old_snd_filter = PicoIn.sndFilter;
- var.value = NULL;
- var.key = "picodrive_audio_filter";
- PicoIn.sndFilter = 0;
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- if (strcmp(var.value, "low-pass") == 0)
- PicoIn.sndFilter = 1;
- }
- old_snd_filter_range = PicoIn.sndFilterRange;
- var.value = NULL;
- var.key = "picodrive_lowpass_range";
- PicoIn.sndFilterRange = (60 * 65536) / 100;
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- PicoIn.sndFilterRange = (atoi(var.value) * 65536) / 100;
- }
- if (old_snd_filter != PicoIn.sndFilter || old_snd_filter_range != PicoIn.sndFilterRange) {
- mix_reset(PicoIn.sndFilter ? PicoIn.sndFilterRange : 0);
- }
- old_frameskip_type = frameskip_type;
- frameskip_type = 0;
- var.key = "picodrive_frameskip";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- if (strcmp(var.value, "auto") == 0)
- frameskip_type = 1;
- else if (strcmp(var.value, "manual") == 0)
- frameskip_type = 2;
- }
- frameskip_threshold = 33;
- var.key = "picodrive_frameskip_threshold";
- var.value = NULL;
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
- frameskip_threshold = strtol(var.value, NULL, 10);
- old_vout_format = vout_format;
- var.value = NULL;
- var.key = "picodrive_renderer";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- if (strcmp(var.value, "fast") == 0)
- vout_format = PDF_NONE;
- else if (strcmp(var.value, "good") == 0)
- vout_format = PDF_8BIT;
- else if (strcmp(var.value, "accurate") == 0)
- vout_format = PDF_RGB555;
- PicoIn.opt &= ~POPT_ALT_RENDERER;
- if (vout_format == PDF_NONE)
- PicoIn.opt |= POPT_ALT_RENDERER;
- PicoDrawSetOutFormat(vout_format, 0);
- }
- var.value = NULL;
- var.key = "picodrive_sound_rate";
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
- new_sound_rate = atoi(var.value);
- if (new_sound_rate != PicoIn.sndRate) {
- /* Update the sound rate */
- PicoIn.sndRate = new_sound_rate;
- PsndRerate(1);
- struct retro_system_av_info av_info;
- retro_get_system_av_info(&av_info);
- environ_cb(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &av_info);
- }
- }
- /* setup video if required */
- if (show_overscan != old_show_overscan || vout_format != old_vout_format)
- {
- if ((vm_current_start_line != -1) &&
- (vm_current_line_count != -1) &&
- (vm_current_is_32cols != -1))
- emu_video_mode_change(
- vm_current_start_line,
- vm_current_line_count,
- vm_current_is_32cols);
- }
- /* Reinitialise frameskipping, if required */
- if (((frameskip_type != old_frameskip_type) ||
- (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)) &&
- !first_run)
- init_frameskip();
- }
- void retro_run(void)
- {
- bool updated = false;
- int pad, i;
- static void *buff;
- PicoIn.skipFrame = 0;
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
- update_variables(false);
- input_poll_cb();
- PicoIn.pad[0] = PicoIn.pad[1] = 0;
- for (pad = 0; pad < 2; pad++)
- for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
- if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
- PicoIn.pad[pad] |= retro_pico_map[i];
- if (PicoPatches)
- PicoPatchApply();
- /* Check whether current frame should
- * be skipped */
- if ((frameskip_type > 0) && retro_audio_buff_active) {
- switch (frameskip_type)
- {
- case 1: /* auto */
- PicoIn.skipFrame = retro_audio_buff_underrun ? 1 : 0;
- break;
- case 2: /* manual */
- PicoIn.skipFrame = (retro_audio_buff_occupancy < frameskip_threshold) ? 1 : 0;
- break;
- default:
- PicoIn.skipFrame = 0;
- break;
- }
- if (!PicoIn.skipFrame || (frameskip_counter >= FRAMESKIP_MAX)) {
- PicoIn.skipFrame = 0;
- frameskip_counter = 0;
- } else
- frameskip_counter++;
- }
- /* If frameskip settings have changed, update
- * frontend audio latency */
- if (update_audio_latency) {
- environ_cb(RETRO_ENVIRONMENT_SET_MINIMUM_AUDIO_LATENCY,
- &audio_latency);
- update_audio_latency = false;
- }
- PicoFrame();
- /* If frame was skipped, call video_cb() with
- * a NULL buffer and return immediately */
- if (PicoIn.skipFrame) {
- video_cb(NULL, vout_width, vout_height, vout_width * 2);
- return;
- }
- #if defined(RENDER_GSKIT_PS2)
- buff = (uint32_t *)RETRO_HW_FRAME_BUFFER_VALID;
- if (!ps2) {
- // get access to the graphics hardware
- if (!environ_cb(RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE, (void **)&ps2) || !ps2) {
- printf("Failed to get HW rendering interface!\n");
- return;
- }
- if (ps2->interface_version != RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION) {
- printf("HW render interface mismatch, expected %u, got %u!\n",
- RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION, ps2->interface_version);
- return;
- }
- ps2->coreTexture->ClutPSM = GS_PSM_CT16;
- ps2->coreTexture->Filter = GS_FILTER_LINEAR;
- ps2->coreTexture->Clut = retro_palette;
- ps2->coreTexture->Mem = vout_buf;
- ps2->coreTexture->Width = vout_width;
- ps2->coreTexture->Height = vout_height;
- ps2->coreTexture->PSM = (vout_16bit ? GS_PSM_CT16 : GS_PSM_T8);
- ps2->padding = padding;
- }
- // CLUT update needed?
- if (!vout_16bit && Pico.m.dirtyPal) {
- PicoDrawUpdateHighPal();
- // Rotate CLUT. PS2 is special since entries in CLUT are not in sequence.
- unsigned short int *pal=(void *)retro_palette;
- for (i = 0; i < 256; i+=8) {
- if ((i&0x18) == 0x08)
- memcpy(pal+i,Pico.est.HighPal+i+8,16);
- else if ((i&0x18) == 0x10)
- memcpy(pal+i,Pico.est.HighPal+i-8,16);
- else
- memcpy(pal+i,Pico.est.HighPal+i,16);
- }
- }
- #else
- if (!vout_16bit) {
- /* The 8 bit renderers write a CLUT image in Pico.est.Draw2FB, while libretro wants RGB in vout_buf.
- * We need to manually copy that to vout_buf, applying the CLUT on the way. Especially
- * with the fast renderer this is improving performance, at the expense of accuracy.
- */
- /* This section is mostly copied from pemu_finalize_frame in platform/linux/emu.c */
- unsigned short *pd = (unsigned short *)vout_buf;
- /* Skip the leftmost 8 columns (it is used as an overlap area for rendering) */
- unsigned char *ps = Pico.est.Draw2FB + 8;
- unsigned short *pal = Pico.est.HighPal;
- int x;
- if (Pico.m.dirtyPal)
- PicoDrawUpdateHighPal();
- /* Copy up to the max height to include the overscan area, and skip the leftmost 8 columns again */
- for (i = 0; i < VOUT_MAX_HEIGHT; i++, ps += 8) {
- for (x = 0; x < vout_width; x+=4) {
- *pd++ = pal[*ps++];
- *pd++ = pal[*ps++];
- *pd++ = pal[*ps++];
- *pd++ = pal[*ps++];
- }
- ps += 320-vout_width; /* Advance to next line in case of 32col mode */
- }
- }
- buff = (char*)vout_buf + vout_offset;
- #endif
- video_cb((short *)buff,
- vout_width, vout_height, vout_width * 2);
- }
- void retro_init(void)
- {
- struct retro_log_callback log;
- int level;
- level = 0;
- environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
- if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
- log_cb = log.log;
- else
- log_cb = NULL;
- environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
- #ifdef _3DS
- ctr_svchack_successful = ctr_svchack_init();
- check_rosalina();
- #elif defined(VITA)
- sceBlock = getVMBlock();
- #endif
- PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80|POPT_EN_YM2413
- | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
- | POPT_EN_32X|POPT_EN_PWM
- | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
- #ifdef __arm__
- #ifdef _3DS
- if (ctr_svchack_successful)
- #endif
- PicoIn.opt |= POPT_EN_DRC;
- #endif
- struct retro_variable var = { .key = "picodrive_sound_rate" };
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
- PicoIn.sndRate = atoi(var.value);
- else
- PicoIn.sndRate = INITIAL_SND_RATE;
- PicoIn.autoRgnOrder = 0x184; // US, EU, JP
- vout_width = VOUT_MAX_WIDTH;
- vout_height = VOUT_MAX_HEIGHT;
- #ifdef _3DS
- vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
- #elif defined(RENDER_GSKIT_PS2)
- vout_buf = memalign(4096, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
- retro_palette = memalign(128, gsKit_texture_size_ee(16, 16, GS_PSM_CT16));
- #else
- vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
- #endif
- PicoInit();
- //PicoIn.osdMessage = plat_status_msg_busy_next;
- PicoIn.mcdTrayOpen = disk_tray_open;
- PicoIn.mcdTrayClose = disk_tray_close;
- frameskip_type = 0;
- frameskip_threshold = 0;
- frameskip_counter = 0;
- retro_audio_buff_active = false;
- retro_audio_buff_occupancy = 0;
- retro_audio_buff_underrun = false;
- audio_latency = 0;
- update_audio_latency = false;
- update_variables(true);
- }
- void retro_deinit(void)
- {
- #ifdef _3DS
- linearFree(vout_buf);
- #elif defined(RENDER_GSKIT_PS2)
- free(vout_buf);
- free(retro_palette);
- ps2 = NULL;
- #else
- free(vout_buf);
- #endif
- vout_buf = NULL;
- PicoExit();
- }
|