+++ /dev/null
-/*
- * libretro core glue for PicoDrive
- * (C) notaz, 2013
- *
- * 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 <stdarg.h>
-#include <string.h>
-#ifndef _WIN32
-#include <sys/mman.h>
-#else
-#include <io.h>
-#include <windows.h>
-#include <sys/types.h>
-#endif
-#include <errno.h>
-#ifdef __MACH__
-#include <libkern/OSCacheControl.h>
-#endif
-
-#include <pico/pico_int.h>
-#include <pico/state.h>
-#include "common/input_pico.h"
-#include "common/version.h"
-#include "libretro.h"
-
-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;
-
-static FILE *emu_log;
-
-#define VOUT_MAX_WIDTH 320
-#define VOUT_MAX_HEIGHT 240
-static void *vout_buf;
-static int vout_width, vout_height, vout_offset;
-
-static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
-
-static void snd_write(int len);
-
-#ifdef _WIN32
-#define SLASH '\\'
-#else
-#define SLASH '/'
-#endif
-
-/* functions called by the core */
-
-void cache_flush_d_inval_i(void *start, void *end)
-{
-#ifdef __arm__
-#if defined(__BLACKBERRY_QNX__)
- msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
-#elif defined(__MACH__)
- size_t len = (char *)end - (char *)start;
- sys_dcache_flush(start, len);
- sys_icache_invalidate(start, len);
-#else
- __clear_cache(start, end);
-#endif
-#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)
-{
- 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;
-
- DWORD flProtect;
- 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;
-
- off_t end = length + offset;
- HANDLE mmap_fd, h;
- 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;
-
- DWORD dwDesiredAccess;
- 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;
- void *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() ... */
-}
-#endif
-
-#ifndef MAP_ANONYMOUS
-#define MAP_ANONYMOUS MAP_ANON
-#endif
-
-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 *)addr;
- ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
- if (ret == MAP_FAILED) {
- lprintf("mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
- return NULL;
- }
-
- if (addr != 0 && ret != (void *)addr) {
- lprintf("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)
-{
-#ifdef __linux__
- 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);
-}
-
-int plat_mem_set_exec(void *ptr, size_t size)
-{
-#ifdef _WIN32
- int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0);
- if (ret == 0)
- lprintf("mprotect(%p, %zd) failed: %d\n", ptr, size, 0);
-#else
- int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
- if (ret != 0)
- lprintf("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)
-{
- memset(vout_buf, 0, 320 * 240 * 2);
- vout_width = is_32cols ? 256 : 320;
- PicoDrawSetOutBuf(vout_buf, vout_width * 2);
-
- vout_height = line_count;
- vout_offset = vout_width * start_line;
-}
-
-void emu_32x_startup(void)
-{
-}
-
-#ifndef ANDROID
-
-void lprintf(const char *fmt, ...)
-{
- va_list list;
-
- va_start(list, fmt);
- fprintf(emu_log, "PicoDrive: ");
- vfprintf(emu_log, fmt, list);
- va_end(list);
- fflush(emu_log);
-}
-
-#else
-
-#include <android/log.h>
-
-void lprintf(const char *fmt, ...)
-{
- va_list list;
-
- va_start(list, fmt);
- __android_log_vprint(ANDROID_LOG_INFO, "PicoDrive", fmt, list);
- va_end(list);
-}
-
-#endif
-
-/* libretro */
-void retro_set_environment(retro_environment_t cb)
-{
- static const struct retro_variable vars[] = {
- //{ "region", "Region; Auto|NTSC|PAL" },
- { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
- { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
- { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
- { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
-#ifdef DRC_SH2
- { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
-#endif
- { NULL, NULL },
- };
-
- environ_cb = cb;
-
- cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
-}
-
-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";
- info->library_version = 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)
-{
- memset(info, 0, sizeof(*info));
- info->timing.fps = Pico.m.pal ? 50 : 60;
- info->timing.sample_rate = 44100;
- info->geometry.base_width = 320;
- info->geometry.base_height = vout_height;
- info->geometry.max_width = VOUT_MAX_WIDTH;
- info->geometry.max_height = VOUT_MAX_HEIGHT;
- info->geometry.aspect_ratio = 0.0f;
-}
-
-/* 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) {
- lprintf("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) {
- lprintf("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;
-}
-
-/* cheats - TODO */
-void retro_cheat_reset(void)
-{
-}
-
-void retro_cheat_set(unsigned index, bool enabled, const char *code)
-{
-}
-
-/* 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) {
- lprintf("missing disk #%u\n", index);
-
- // RetroArch specifies "no disk" with index == count,
- // so don't fail here..
- disk_current_index = index;
- return true;
- }
-
- lprintf("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) {
- lprintf("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 = {
- .set_eject_state = disk_set_eject_state,
- .get_eject_state = disk_get_eject_state,
- .get_image_index = disk_get_image_index,
- .set_image_index = disk_set_image_index,
- .get_num_images = disk_get_num_images,
- .replace_image_index = disk_replace_image_index,
- .add_image_index = disk_add_image_index,
-};
-
-static void disk_tray_open(void)
-{
- lprintf("cd tray open\n");
- disk_ejected = 1;
-}
-
-static void disk_tray_close(void)
-{
- lprintf("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) {
- lprintf("using bios: %s\n", path);
- fclose(f);
- return path;
- }
-
- return NULL;
-}
-
-bool retro_load_game(const struct retro_game_info *info)
-{
- enum media_type_e media_type;
- static char carthw_path[256];
- size_t i;
-
- enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
- if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
- lprintf("RGB565 support required, sorry\n");
- return false;
- }
-
- if (info == NULL || info->path == NULL) {
- lprintf("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:
- lprintf("Failed to detect ROM/CD image type.\n");
- return false;
- case PM_BAD_CD:
- lprintf("Invalid CD image\n");
- return false;
- case PM_BAD_CD_NO_BIOS:
- lprintf("Missing BIOS\n");
- return false;
- case PM_ERROR:
- lprintf("Load error\n");
- return false;
- default:
- break;
- }
-
- PicoLoopPrepare();
-
- PicoWriteSound = snd_write;
- memset(sndBuffer, 0, sizeof(sndBuffer));
- PsndOut = sndBuffer;
- PsndRerate(0);
-
- 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 id)
-{
- if (id != RETRO_MEMORY_SAVE_RAM)
- return NULL;
-
- if (PicoAHW & PAHW_MCD)
- return Pico_mcd->bram;
- else
- return SRam.data;
-}
-
-size_t retro_get_memory_size(unsigned id)
-{
- unsigned int i;
- int sum;
-
- if (id != RETRO_MEMORY_SAVE_RAM)
- return 0;
-
- if (PicoAHW & PAHW_MCD)
- // bram
- return 0x2000;
-
- if (Pico.m.frame_count == 0)
- return SRam.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 < SRam.size; i++)
- sum |= SRam.data[i];
-
- return (sum != 0) ? SRam.size : 0;
-}
-
-void retro_reset(void)
-{
- PicoReset();
-}
-
-static const unsigned short retro_pico_map[] = {
- [RETRO_DEVICE_ID_JOYPAD_B] = 1 << GBTN_B,
- [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << GBTN_A,
- [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << GBTN_MODE,
- [RETRO_DEVICE_ID_JOYPAD_START] = 1 << GBTN_START,
- [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << GBTN_UP,
- [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << GBTN_DOWN,
- [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << GBTN_LEFT,
- [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << GBTN_RIGHT,
- [RETRO_DEVICE_ID_JOYPAD_A] = 1 << GBTN_C,
- [RETRO_DEVICE_ID_JOYPAD_X] = 1 << GBTN_Y,
- [RETRO_DEVICE_ID_JOYPAD_L] = 1 << GBTN_X,
- [RETRO_DEVICE_ID_JOYPAD_R] = 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(PsndOut, 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;
-
- lprintf("invalid picodrive_input: '%s'\n", name);
- return PICO_INPUT_PAD_3BTN;
-}
-
-static void update_variables(void)
-{
- struct retro_variable var;
-
- 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)
- PicoOpt |= POPT_DIS_SPRITE_LIM;
- else
- PicoOpt &= ~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)
- PicoOpt |= POPT_EN_MCD_RAMCART;
- else
- PicoOpt &= ~POPT_EN_MCD_RAMCART;
- }
-
-#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)
- PicoOpt |= POPT_EN_DRC;
- else
- PicoOpt &= ~POPT_EN_DRC;
- }
-#endif
-}
-
-void retro_run(void)
-{
- bool updated = false;
- int pad, i;
-
- if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
- update_variables();
-
- input_poll_cb();
-
- PicoPad[0] = PicoPad[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))
- PicoPad[pad] |= retro_pico_map[i];
-
- PicoFrame();
-
- video_cb((short *)vout_buf + vout_offset,
- vout_width, vout_height, vout_width * 2);
-}
-
-void retro_init(void)
-{
- int level;
-
-#ifdef IOS
- emu_log = fopen("/User/Documents/PicoDrive.log", "w");
- if (emu_log == NULL)
- emu_log = fopen("PicoDrive.log", "w");
- if (emu_log == NULL)
-#endif
- emu_log = stdout;
-
- level = 0;
- environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
-
- environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
-
- PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
- | 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__
- PicoOpt |= POPT_EN_DRC;
-#endif
- PsndRate = 44100;
- PicoAutoRgnOrder = 0x184; // US, EU, JP
-
- vout_width = 320;
- vout_height = 240;
- vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
-
- PicoInit();
- PicoDrawSetOutFormat(PDF_RGB555, 0);
- PicoDrawSetOutBuf(vout_buf, vout_width * 2);
-
- //PicoMessage = plat_status_msg_busy_next;
- PicoMCDopenTray = disk_tray_open;
- PicoMCDcloseTray = disk_tray_close;
-
- update_variables();
-}
-
-void retro_deinit(void)
-{
- PicoExit();
-}
notaz.gp2x.de / picodrive.git / blobdiff