diff --git a/libretro/libretro.c b/libretro/libretro.c index 7b8ee9144..5df6ff4e8 100644 --- a/libretro/libretro.c +++ b/libretro/libretro.c @@ -1,3881 +1,3962 @@ -/**************************************************************************** - * libretro.c - * - * Genesis Plus GX libretro port - * - * Copyright Eke-Eke (2007-2022) - * - * Copyright Daniel De Matteis (2012-2016) - * - * Redistribution and use of this code or any derivative works are permitted - * provided that the following conditions are met: - * - * - Redistributions may not be sold, nor may they be used in a commercial - * product or activity. - * - * - Redistributions that are modified from the original source must include the - * complete source code, including the source code for all components used by a - * binary built from the modified sources. However, as a special exception, the - * source code distributed need not include anything that is normally distributed - * (in either source or binary form) with the major components (compiler, kernel, - * and so on) of the operating system on which the executable runs, unless that - * component itself accompanies the executable. - * - * - Redistributions must reproduce the above copyright notice, this list of - * conditions and the following disclaimer in the documentation and/or other - * materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************************/ - -#ifndef _MSC_VER -#include -#endif -#include -#include -#include - -#ifdef _MSC_VER -#define snprintf _snprintf -#endif - -#ifdef _XBOX1 -#include -#endif - -#define RETRO_DEVICE_MDPAD_3B RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 0) -#define RETRO_DEVICE_MDPAD_6B RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 1) -#define RETRO_DEVICE_MSPAD_2B RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 2) -#define RETRO_DEVICE_MDPAD_3B_WAYPLAY RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 3) -#define RETRO_DEVICE_MDPAD_6B_WAYPLAY RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 4) -#define RETRO_DEVICE_MDPAD_3B_TEAMPLAYER RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 5) -#define RETRO_DEVICE_MDPAD_6B_TEAMPLAYER RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 6) -#define RETRO_DEVICE_MSPAD_2B_MASTERTAP RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 7) -#define RETRO_DEVICE_PADDLE RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_ANALOG, 0) -#define RETRO_DEVICE_SPORTSPAD RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_ANALOG, 1) -#define RETRO_DEVICE_XE_1AP RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_ANALOG, 2) -#define RETRO_DEVICE_PHASER RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_LIGHTGUN, 0) -#define RETRO_DEVICE_MENACER RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_LIGHTGUN, 1) -#define RETRO_DEVICE_JUSTIFIERS RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_LIGHTGUN, 2) -#define RETRO_DEVICE_GRAPHIC_BOARD RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_POINTER, 0) - -#include -#include -#include -#include - -#include "libretro_core_options.h" - -#include "shared.h" -#include "md_ntsc.h" -#include "sms_ntsc.h" -#include "osd.h" - -#define STATIC_ASSERT(name, test) typedef struct { int assert_[(test)?1:-1]; } assert_ ## name ## _ -#define M68K_MAX_CYCLES 1107 -#define Z80_MAX_CYCLES 345 -#define OVERCLOCK_FRAME_DELAY 100 - -#ifdef M68K_OVERCLOCK_SHIFT -#ifndef HAVE_OVERCLOCK -#define HAVE_OVERCLOCK -#endif -STATIC_ASSERT(m68k_overflow, - M68K_MAX_CYCLES <= UINT_MAX >> (M68K_OVERCLOCK_SHIFT + 1)); -#endif - -#ifdef Z80_OVERCLOCK_SHIFT -#ifndef HAVE_OVERCLOCK -#define HAVE_OVERCLOCK -#endif -STATIC_ASSERT(z80_overflow, - Z80_MAX_CYCLES <= UINT_MAX >> (Z80_OVERCLOCK_SHIFT + 1)); -#endif - -t_config config; - -sms_ntsc_t *sms_ntsc = NULL; -md_ntsc_t *md_ntsc = NULL; - -char GG_ROM[256]; -char AR_ROM[256]; -char SK_ROM[256]; -char SK_UPMEM[256]; -char MD_BIOS[256]; -char GG_BIOS[256]; -char MS_BIOS_EU[256]; -char MS_BIOS_JP[256]; -char MS_BIOS_US[256]; -char CD_BIOS_EU[256]; -char CD_BIOS_US[256]; -char CD_BIOS_JP[256]; -char CD_BRAM_JP[256]; -char CD_BRAM_US[256]; -char CD_BRAM_EU[256]; -char CART_BRAM[256]; - -static int vwidth; -static int vheight; -static double vaspect_ratio; - -static uint32_t brm_crc[2]; -static uint8_t brm_format[0x40] = -{ - 0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x00,0x00,0x00,0x00,0x40, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x53,0x45,0x47,0x41,0x5f,0x43,0x44,0x5f,0x52,0x4f,0x4d,0x00,0x01,0x00,0x00,0x00, - 0x52,0x41,0x4d,0x5f,0x43,0x41,0x52,0x54,0x52,0x49,0x44,0x47,0x45,0x5f,0x5f,0x5f -}; -uint8_t cart_size; - -static bool is_running = 0; -static uint8_t temp[0x10000]; -static int16 soundbuffer[3068]; -static uint16_t bitmap_data_[720 * 576]; - -static bool restart_eq = false; - -static char g_rom_dir[256]; -static char g_rom_name[256]; -static const void *g_rom_data = NULL; -static size_t g_rom_size = 0; -static char *save_dir = NULL; - -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_cb; - -enum RetroLightgunInputModes{RetroLightgun, RetroPointer}; -static enum RetroLightgunInputModes retro_gun_mode = RetroLightgun; - -/* Cheat Support */ -#define MAX_CHEATS (150) - -typedef struct -{ - bool enable; - uint16_t data; - uint16_t old; - uint32_t address; - uint8_t *prev; -} CHEATENTRY; - -static int maxcheats = 0; -static int maxROMcheats = 0; -static int maxRAMcheats = 0; - -static CHEATENTRY cheatlist[MAX_CHEATS]; -static uint8_t cheatIndexes[MAX_CHEATS]; - -static char ggvalidchars[] = "ABCDEFGHJKLMNPRSTVWXYZ0123456789"; - -static char arvalidchars[] = "0123456789ABCDEF"; - -/* Some games appear to calibrate music playback speed for PAL/NTSC by - actually counting CPU cycles per frame during startup, resulting in - hilariously fast music. Delay overclocking for a while as a - workaround */ -#ifdef HAVE_OVERCLOCK -static uint32_t overclock_delay; -#endif - -static bool libretro_supports_option_categories = false; -static bool libretro_supports_bitmasks = false; - -#define SOUND_FREQUENCY 44100 - -/*EQ settings*/ -#define HAVE_EQ - -/* 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; - -#ifdef USE_PER_SOUND_CHANNELS_CONFIG -static bool show_advanced_av_settings = true; -#endif - -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; -} - -/* LED interface */ -static retro_set_led_state_t led_state_cb = NULL; -static unsigned int retro_led_state[2] = {0}; - -static void retro_led_interface(void) -{ - /* 0: Power - * 1: CD */ - - unsigned int led_state[2] = {0}; - unsigned int l = 0; - - led_state[0] = (zstate) ? 1 : 0; - led_state[1] = (scd.regs[0x06 >> 1].byte.h & 1) ? 1 : 0; - - for (l = 0; l < sizeof(led_state)/sizeof(led_state[0]); l++) - { - if (retro_led_state[l] != led_state[l]) - { - retro_led_state[l] = led_state[l]; - led_state_cb(l, led_state[l]); - } - } -} - -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 frames_per_sec; - float frame_time_msec; - - /* While system_clock and lines_per_frame will - * always be valid when this function is called, - * it is not guaranteed. Just add a fallback to - * prevent any possible divide-by-zero errors */ - if ((system_clock <= 0) || (lines_per_frame <= 0)) - frames_per_sec = 60.0f; - else - frames_per_sec = (float)system_clock / (float)lines_per_frame / (float)MCYCLES_PER_LINE; - - frame_time_msec = 1000.0f / frames_per_sec; - - /* 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; -} - -/************************************ - * Genesis Plus GX implementation - ************************************/ -#undef CHUNKSIZE -#define CHUNKSIZE (0x10000) - -void error(char * fmt, ...) -{ - char buffer[256]; - va_list ap; - va_start(ap, fmt); - vsprintf(buffer, fmt, ap); - if (log_cb) - log_cb(RETRO_LOG_ERROR, "%s\n", buffer); - va_end(ap); -} - -static void show_rom_size_error_msg(void) -{ - unsigned msg_interface_version = 0; - environ_cb(RETRO_ENVIRONMENT_GET_MESSAGE_INTERFACE_VERSION, - &msg_interface_version); - - if (msg_interface_version >= 1) - { - struct retro_message_ext msg = { - "ROM size exceeds maximum permitted value", - 3000, - 3, - RETRO_LOG_ERROR, - RETRO_MESSAGE_TARGET_ALL, - RETRO_MESSAGE_TYPE_NOTIFICATION, - -1 - }; - environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE_EXT, &msg); - } - else - { - struct retro_message msg = { - "ROM size exceeds maximum permitted value", - 180 - }; - environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE, &msg); - } -} - -int load_archive(char *filename, unsigned char *buffer, int maxsize, char *extension) -{ - int64_t left = 0; - int64_t size = 0; - RFILE *fd; - - /* Get filename extension */ - if (extension) - { - memcpy(extension, &filename[strlen(filename) - 3], 3); - extension[3] = 0; - } - - /* Check if this was called to load ROM file from the frontend (not BOOT ROM or Lock-On ROM files from the core) */ - if (maxsize >= 0x800000) - { - /* Check if loaded game is already in memory */ - if ((g_rom_data != NULL) && (g_rom_size > 0)) - { - size = g_rom_size; - if (size > maxsize) - { - /* ROM exceeds maximum allowed size - * - Notify user and return an error */ - show_rom_size_error_msg(); - return 0; - } - memcpy(buffer, g_rom_data, size); - return size; - } - } - - /* Open file */ - fd = filestream_open(filename, RETRO_VFS_FILE_ACCESS_READ, RETRO_VFS_FILE_ACCESS_HINT_NONE); - - if (!fd) - { - /* Master System & Game Gear BIOS are optional files */ - if (!strcmp(filename,MS_BIOS_US) || !strcmp(filename,MS_BIOS_EU) || !strcmp(filename,MS_BIOS_JP) || !strcmp(filename,GG_BIOS)) - { - return 0; - } - - /* Mega CD BIOS are required files */ - if (!strcmp(filename,CD_BIOS_US) || !strcmp(filename,CD_BIOS_EU) || !strcmp(filename,CD_BIOS_JP)) - { - if (log_cb) - log_cb(RETRO_LOG_ERROR, "Unable to open CD BIOS: %s.\n", filename); - return 0; - } - - if (log_cb) - log_cb(RETRO_LOG_ERROR, "Unable to open file.\n"); - return 0; - } - - /* Get file size */ - filestream_seek(fd, 0, SEEK_END); - size = filestream_tell(fd); - - /* size limit */ - if (size > MAXROMSIZE) - { - /* ROM exceeds maximum allowed size - * - Notify user and return an error */ - filestream_close(fd); - show_rom_size_error_msg(); - return 0; - } - else if (size > maxsize) - size = maxsize; - - if (log_cb) - log_cb(RETRO_LOG_INFO, "INFORMATION - Loading %d bytes ...\n", size); - - /* Read into buffer */ - left = size; - filestream_seek(fd, 0, SEEK_SET); - while (left > CHUNKSIZE) - { - filestream_read(fd, buffer, CHUNKSIZE); - buffer += CHUNKSIZE; - left -= CHUNKSIZE; - } - - /* Read remaining bytes */ - filestream_read(fd, buffer, left); - - /* Close file */ - filestream_close(fd); - - /* Return loaded ROM size */ - return size; -} - -static void RAMCheatUpdate(void); - -static void osd_input_update_internal_bitmasks(void) -{ - int i, player = 0; - unsigned int temp; - int16_t ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - - for (i = 0; i < MAX_INPUTS; i++) - { - temp = 0; - switch (input.dev[i]) - { - case DEVICE_PAD6B: - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_L)) - temp |= INPUT_X; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_X)) - temp |= INPUT_Y; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_R)) - temp |= INPUT_Z; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_SELECT)) - temp |= INPUT_MODE; - - case DEVICE_PAD3B: - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_Y)) - temp |= INPUT_A; - - case DEVICE_PAD2B: - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_B)) - temp |= INPUT_B; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_A)) - temp |= INPUT_C; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_START)) - temp |= INPUT_START; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_UP)) - temp |= INPUT_UP; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_DOWN)) - temp |= INPUT_DOWN; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_LEFT)) - temp |= INPUT_LEFT; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_RIGHT)) - temp |= INPUT_RIGHT; - - player++; - ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - break; - - case DEVICE_MOUSE: - input.analog[i][0] = input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_X); - if (config.invert_mouse) - input.analog[i][1] = input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y); - else - input.analog[i][1] = -input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y); - - if (input.analog[i][0] < -255) - input.analog[i][0] = -255; - else if (input.analog[i][0] > 255) - input.analog[i][0] = 255; - if (input.analog[i][1] < -255) - input.analog[i][1] = -255; - else if (input.analog[i][1] > 255) - input.analog[i][1] = 255; - - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) - temp |= INPUT_MOUSE_LEFT; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) - temp |= INPUT_MOUSE_RIGHT; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN)) - temp |= INPUT_MOUSE_CENTER; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) - temp |= INPUT_START; - - player++; - ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - break; - - case DEVICE_LIGHTGUN: - if ( retro_gun_mode == RetroPointer ) - { - int touch_count; - input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * bitmap.viewport.w) / 0xfffe; - input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * bitmap.viewport.h) / 0xfffe; - if (input_state_cb(player, RETRO_DEVICE_POINTER, 0, - RETRO_DEVICE_ID_POINTER_PRESSED)) - temp |= INPUT_A; - touch_count = input_state_cb(player, - RETRO_DEVICE_POINTER, 0, - RETRO_DEVICE_ID_POINTER_COUNT); - - if (touch_count == 2) - temp |= INPUT_B; - else if (touch_count == 3) - temp |= INPUT_START; - else if (touch_count == 4) - temp |= INPUT_C; - } - else - { - /* RetroLightgun is default */ - if ( input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_IS_OFFSCREEN) ) - { - input.analog[i][0] = -1000; - input.analog[i][1] = -1000; - } - else - { - input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_SCREEN_X) + 0x7fff) * bitmap.viewport.w) / 0xfffe; - input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_SCREEN_Y) + 0x7fff) * bitmap.viewport.h) / 0xfffe; - } - - if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_TRIGGER)) - temp |= INPUT_A; - if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_AUX_A)) - temp |= INPUT_B; - if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_AUX_B)) - temp |= INPUT_C; - if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_START)) - temp |= INPUT_START; - } - - player++; - ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - break; - - case DEVICE_PADDLE: - input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; - - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_B)) - temp |= INPUT_BUTTON1; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_START)) - temp |= INPUT_START; - - player++; - ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - break; - - case DEVICE_SPORTSPAD: - input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; - input.analog[i][1] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_Y) + 0x8000) >> 8; - - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_B)) - temp |= INPUT_BUTTON1; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_A)) - temp |= INPUT_BUTTON2; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_START)) - temp |= INPUT_START; - - player++; - ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - break; - - case DEVICE_PICO: - input.analog[i][0] = 0x03c + ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * (0x17c-0x03c)) / 0xfffe; - input.analog[i][1] = 0x1fc + ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * (0x2f7-0x1fc)) / 0xfffe; - - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) - temp |= INPUT_PICO_PEN; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) - temp |= INPUT_PICO_RED; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELUP)) - pico_current = (pico_current - 1) & 7; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN)) - pico_current = (pico_current + 1) & 7; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_UP)) - temp |= INPUT_UP; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_DOWN)) - temp |= INPUT_DOWN; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_LEFT)) - temp |= INPUT_LEFT; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_RIGHT)) - temp |= INPUT_RIGHT; - - player++; - ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - break; - - case DEVICE_TEREBI: - input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * 250) / 0xfffe; - input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * 250) / 0xfffe; - - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) - temp |= INPUT_BUTTON1; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) - temp |= INPUT_START; - - player++; - ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - break; - - case DEVICE_GRAPHIC_BOARD: - input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * 255) / 0xfffe; - input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * 255) / 0xfffe; - - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) - temp |= INPUT_GRAPHIC_PEN; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) - temp |= INPUT_GRAPHIC_DO; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) - temp |= INPUT_GRAPHIC_MENU; - - player++; - ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - break; - - case DEVICE_XE_1AP: - { - int rx = input.analog[i][0] = input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X); - int ry = input.analog[i][1] = input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y); - if (abs(rx) > abs(ry)) - input.analog[i+1][0] = (rx + 0x8000) >> 8; - else - input.analog[i+1][0] = (0x7fff - ry) >> 8; - input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; - input.analog[i][1] = (input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y) + 0x8000) >> 8; - - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_R)) - temp |= INPUT_XE_A; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_R2)) - temp |= INPUT_XE_B; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_L)) - temp |= INPUT_XE_C; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_L2)) - temp |= INPUT_XE_D; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_Y)) - temp |= INPUT_XE_E1; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_B)) - temp |= INPUT_XE_E2; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_SELECT)) - temp |= INPUT_XE_SELECT; - if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_START)) - temp |= INPUT_XE_START; - - player++; - ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); - break; - } - - default: - break; - } - - input.pad[i] = temp; - } -} - -static void osd_input_update_internal(void) -{ - int i, player = 0; - unsigned int temp; - - for (i = 0; i < MAX_INPUTS; i++) - { - temp = 0; - switch (input.dev[i]) - { - case DEVICE_PAD6B: - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L)) - temp |= INPUT_X; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X)) - temp |= INPUT_Y; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R)) - temp |= INPUT_Z; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT)) - temp |= INPUT_MODE; - - case DEVICE_PAD3B: - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y)) - temp |= INPUT_A; - - case DEVICE_PAD2B: - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) - temp |= INPUT_B; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A)) - temp |= INPUT_C; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) - temp |= INPUT_START; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)) - temp |= INPUT_UP; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)) - temp |= INPUT_DOWN; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)) - temp |= INPUT_LEFT; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)) - temp |= INPUT_RIGHT; - - player++; - break; - - case DEVICE_MOUSE: - input.analog[i][0] = input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_X); - if (config.invert_mouse) - input.analog[i][1] = input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y); - else - input.analog[i][1] = -input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y); - - if (input.analog[i][0] < -255) - input.analog[i][0] = -255; - else if (input.analog[i][0] > 255) - input.analog[i][0] = 255; - if (input.analog[i][1] < -255) - input.analog[i][1] = -255; - else if (input.analog[i][1] > 255) - input.analog[i][1] = 255; - - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) - temp |= INPUT_MOUSE_LEFT; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) - temp |= INPUT_MOUSE_RIGHT; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN)) - temp |= INPUT_MOUSE_CENTER; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) - temp |= INPUT_START; - - player++; - break; - - case DEVICE_LIGHTGUN: - if ( retro_gun_mode == RetroPointer ) - { - input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * bitmap.viewport.w) / 0xfffe; - input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * bitmap.viewport.h) / 0xfffe; - if (input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_PRESSED)) - temp |= INPUT_A; - } - else - { - /* RetroLightgun is default */ - if ( input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_IS_OFFSCREEN) ) - { - input.analog[i][0] = -1000; - input.analog[i][1] = -1000; - } - else - { - input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_SCREEN_X) + 0x7fff) * bitmap.viewport.w) / 0xfffe; - input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_SCREEN_Y) + 0x7fff) * bitmap.viewport.h) / 0xfffe; - } - - if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_TRIGGER)) - temp |= INPUT_A; - if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_AUX_A)) - temp |= INPUT_B; - if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_AUX_B)) - temp |= INPUT_C; - if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_START)) - temp |= INPUT_START; - } - - player++; - break; - - case DEVICE_PADDLE: - input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; - - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) - temp |= INPUT_BUTTON1; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) - temp |= INPUT_START; - - player++; - break; - - case DEVICE_SPORTSPAD: - input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; - input.analog[i][1] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_Y) + 0x8000) >> 8; - - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) - temp |= INPUT_BUTTON1; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A)) - temp |= INPUT_BUTTON2; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) - temp |= INPUT_START; - - player++; - break; - - case DEVICE_PICO: - input.analog[i][0] = 0x03c + ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * (0x17c-0x03c)) / 0xfffe; - input.analog[i][1] = 0x1fc + ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * (0x2f7-0x1fc)) / 0xfffe; - - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) - temp |= INPUT_PICO_PEN; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) - temp |= INPUT_PICO_RED; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELUP)) - pico_current = (pico_current - 1) & 7; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN)) - pico_current = (pico_current + 1) & 7; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)) - temp |= INPUT_UP; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)) - temp |= INPUT_DOWN; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)) - temp |= INPUT_LEFT; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)) - temp |= INPUT_RIGHT; - - player++; - break; - - case DEVICE_TEREBI: - input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * 250) / 0xfffe; - input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * 250) / 0xfffe; - - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) - temp |= INPUT_BUTTON1; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) - temp |= INPUT_START; - - player++; - break; - - case DEVICE_GRAPHIC_BOARD: - input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * 255) / 0xfffe; - input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * 255) / 0xfffe; - - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) - temp |= INPUT_GRAPHIC_PEN; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) - temp |= INPUT_GRAPHIC_DO; - if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) - temp |= INPUT_GRAPHIC_MENU; - - player++; - break; - - case DEVICE_XE_1AP: - { - int rx = input.analog[i][0] = input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X); - int ry = input.analog[i][1] = input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y); - if (abs(rx) > abs(ry)) - input.analog[i+1][0] = (rx + 0x8000) >> 8; - else - input.analog[i+1][0] = (0x7fff - ry) >> 8; - input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; - input.analog[i][1] = (input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y) + 0x8000) >> 8; - - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R)) - temp |= INPUT_XE_A; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2)) - temp |= INPUT_XE_B; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L)) - temp |= INPUT_XE_C; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2)) - temp |= INPUT_XE_D; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y)) - temp |= INPUT_XE_E1; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) - temp |= INPUT_XE_E2; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT)) - temp |= INPUT_XE_SELECT; - if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) - temp |= INPUT_XE_START; - - player++; - break; - } - - default: - break; - } - - input.pad[i] = temp; - } -} - -void osd_input_update(void) -{ - input_poll_cb(); - - /* Update RAM patches */ - RAMCheatUpdate(); - - if (libretro_supports_bitmasks) - osd_input_update_internal_bitmasks(); - else - osd_input_update_internal(); -} - -static void draw_cursor(int16_t x, int16_t y, uint16_t color) -{ - int i; - - /* crosshair center position */ - uint16_t *ptr = (uint16_t *)bitmap.data + ((bitmap.viewport.y + y) * bitmap.width) + x + bitmap.viewport.x; - - /* default crosshair dimension */ - int x_start = x - 3; - int x_end = x + 3; - int y_start = y - 3; - int y_end = y + 3; - - /* off-screen? */ - if ( x < 0 && y < 0 ) - return; - - /* framebuffer limits */ - if (x_start < -bitmap.viewport.x) x_start = -bitmap.viewport.x; - if (x_end >= (bitmap.viewport.w + bitmap.viewport.x)) x_end = bitmap.viewport.w + bitmap.viewport.x - 1; - if (y_start < -bitmap.viewport.y) y_start = -bitmap.viewport.y; - if (y_end >= (bitmap.viewport.h + bitmap.viewport.y)) y_end = bitmap.viewport.h + bitmap.viewport.y - 1; - - /* draw crosshair */ - for (i = (x_start - x); i <= (x_end - x); i++) - ptr[i] = (i & 1) ? color : 0xffff; - for (i = (y_start - y); i <= (y_end - y); i++) - ptr[i * bitmap.width] = (i & 1) ? color : 0xffff; -} - -static void init_bitmap(void) -{ - memset(&bitmap, 0, sizeof(bitmap)); - bitmap.width = 720; - bitmap.height = 576; - bitmap.pitch = 720 * 2; - bitmap.data = (uint8_t *)bitmap_data_; -} - -static void config_default(void) -{ - int i; - - /* sound options */ - config.psg_preamp = 150; - config.fm_preamp = 100; - config.cdda_volume = 100; - config.pcm_volume = 100; - config.hq_fm = 1; /* high-quality FM resampling (slower) */ - config.hq_psg = 1; /* high-quality PSG resampling (slower) */ - config.filter = 1; /* no filter */ - config.lp_range = 0x9999; /* 0.6 in 0.16 fixed point */ - config.low_freq = 880; - config.high_freq = 5000; - config.lg = 100; - config.mg = 100; - config.hg = 100; - config.ym2612 = YM2612_DISCRETE; - config.ym2413 = 2; /* AUTO */ - config.mono = 0; /* STEREO output */ -#ifdef USE_PER_SOUND_CHANNELS_CONFIG - for (i = 0; i < 4; i++) config.psg_ch_volumes[i] = 100; /* individual channel volumes */ - for (i = 0; i < 6; i++) config.md_ch_volumes[i] = 100; /* individual channel volumes */ - for (i = 0; i < 9; i++) config.sms_fm_ch_volumes[i] = 100; /* individual channel volumes */ -#endif -#ifdef HAVE_YM3438_CORE - config.ym3438 = 0; -#endif -#ifdef HAVE_OPLL_CORE - config.opll = 0; -#endif - - /* system options */ - config.system = 0; /* AUTO */ - config.region_detect = 0; /* AUTO */ - config.vdp_mode = 0; /* AUTO */ - config.master_clock = 0; /* AUTO */ - config.force_dtack = 0; - config.addr_error = 1; - config.bios = 0; - config.lock_on = 0; - config.add_on = HW_ADDON_AUTO; - config.lcd = 0; /* 0.8 fixed point */ -#ifdef HAVE_OVERCLOCK - config.overclock = 100; -#endif - config.no_sprite_limit = 0; - config.enhanced_vscroll = 0; - config.enhanced_vscroll_limit = 8; - - /* video options */ - config.overscan = 0; - config.aspect_ratio = 0; - config.gg_extra = 0; - config.ntsc = 0; - config.lcd = 0; - config.render = 0; - config.left_border = 0; - - /* input options */ - input.system[0] = SYSTEM_GAMEPAD; - input.system[1] = SYSTEM_GAMEPAD; - for (i=0; i CHUNKSIZE) - { - filestream_read(fp, scd.cartridge.area + done, CHUNKSIZE); - done += CHUNKSIZE; - filesize -= CHUNKSIZE; - } - - /* Read remaining bytes */ - if (filesize) - { - filestream_read(fp, scd.cartridge.area + done, filesize); - } - - /* close file */ - filestream_close(fp); - - /* update CRC */ - brm_crc[1] = crc32(0, scd.cartridge.area, scd.cartridge.mask + 1); - } - - /* check if cartridge backup RAM is correctly formatted */ - if (memcmp(scd.cartridge.area + scd.cartridge.mask + 1 - 0x20, brm_format + 0x20, 0x20)) - { - /* clear cartridge backup RAM */ - memset(scd.cartridge.area, 0x00, scd.cartridge.mask + 1); - - /* Cartridge Backup RAM size fields */ - brm_format[0x10] = brm_format[0x12] = brm_format[0x14] = brm_format[0x16] = (((scd.cartridge.mask + 1) / 64) - 3) >> 8; - brm_format[0x11] = brm_format[0x13] = brm_format[0x15] = brm_format[0x17] = (((scd.cartridge.mask + 1) / 64) - 3) & 0xff; - - /* format cartridge backup RAM */ - memcpy(scd.cartridge.area + scd.cartridge.mask + 1 - 0x40, brm_format, 0x40); - } - } -} - -static void bram_save(void) -{ - RFILE *fp; - - /* verify that internal backup RAM has been modified */ - if (crc32(0, scd.bram, 0x2000) != brm_crc[0]) - { - /* check if it is correctly formatted before saving */ - if (!memcmp(scd.bram + 0x2000 - 0x20, brm_format + 0x20, 0x20)) - { - switch (region_code) - { - case REGION_JAPAN_NTSC: - fp = filestream_open(CD_BRAM_JP, RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE); - break; - case REGION_EUROPE: - fp = filestream_open(CD_BRAM_EU, RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE); - break; - case REGION_USA: - fp = filestream_open(CD_BRAM_US, RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE); - break; - default: - return; - } - - if (fp != NULL) - { - filestream_write(fp, scd.bram, 0x2000); - filestream_close(fp); - - /* update CRC */ - brm_crc[0] = crc32(0, scd.bram, 0x2000); - } - } - } - - /* verify that cartridge backup RAM has been modified */ - if (scd.cartridge.id && (crc32(0, scd.cartridge.area, scd.cartridge.mask + 1) != brm_crc[1])) - { - /* check if it is correctly formatted before saving */ - if (!memcmp(scd.cartridge.area + scd.cartridge.mask + 1 - 0x20, brm_format + 0x20, 0x20)) - { - fp = filestream_open(CART_BRAM, RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE); - if (fp != NULL) - { - int filesize = scd.cartridge.mask + 1; - int done = 0; - - /* Write to file (2k blocks) */ - while (filesize > CHUNKSIZE) - { - filestream_write(fp, scd.cartridge.area + done, CHUNKSIZE); - done += CHUNKSIZE; - filesize -= CHUNKSIZE; - } - - /* Write remaining bytes */ - if (filesize) - { - filestream_write(fp, scd.cartridge.area + done, filesize); - } - - /* Close file */ - filestream_close(fp); - - /* update CRC */ - brm_crc[1] = crc32(0, scd.cartridge.area, scd.cartridge.mask + 1); - } - } - } -} - -static void extract_name(char *buf, const char *path, size_t size) -{ - char *base = strrchr(path, '/'); - if (!base) - base = strrchr(path, '\\'); - - if (base) - { - strlcpy(buf, base, size); - base = strrchr(buf, '.'); - if (base) - *base = '\0'; - } - else - buf[0] = '\0'; -} - -static void extract_directory(char *buf, const char *path, size_t size) -{ - char *base; - strncpy(buf, path, size - 1); - buf[size - 1] = '\0'; - - if (!(base = strrchr(buf, '/'))) - base = strrchr(buf, '\\'); - - if (base) - *base = '\0'; - else - buf[0] = '\0'; -} - -static double calculate_display_aspect_ratio(void) -{ - double videosamplerate, dotrate; - bool is_h40 = false; - if (config.aspect_ratio == 0) - { - if ((system_hw == SYSTEM_GG || system_hw == SYSTEM_GGMS) && config.overscan == 0 && config.gg_extra == 0) - return (6.0 / 5.0) * ((double)vwidth / (double)vheight); - } - - is_h40 = bitmap.viewport.w == 320; /* Could be read directly from the register as well. */ - dotrate = system_clock / (is_h40 ? 8.0 : 10.0); - - if (config.aspect_ratio == 1) /* Force NTSC PAR */ - videosamplerate = 135000000.0 / 11.0; - else if (config.aspect_ratio == 2) /* Force PAL PAR */ - videosamplerate = 14750000.0; - else if (config.aspect_ratio == 3) /* Force 4:3 */ - return (4.0 / 3.0); - else if (config.aspect_ratio == 4) /* Uncorrected */ - return (0.0); - else - videosamplerate = vdp_pal ? 14750000.0 : 135000000.0 / 11.0; - - return (videosamplerate / dotrate) * ((double)vwidth / ((double)vheight * 2.0)); -} - -static bool update_viewport(void) -{ - int ow = vwidth; - int oh = vheight; - double oar = vaspect_ratio; - - vwidth = bitmap.viewport.w + (bitmap.viewport.x * 2); - vheight = bitmap.viewport.h + (bitmap.viewport.y * 2); - vaspect_ratio = calculate_display_aspect_ratio(); - - if (config.ntsc) - { - if (reg[12] & 1) - vwidth = MD_NTSC_OUT_WIDTH(vwidth); - else - vwidth = SMS_NTSC_OUT_WIDTH(vwidth); - } - - if (config.render && interlaced) - { - vheight = vheight * 2; - } - return ((ow != vwidth) || (oh != vheight) || (oar != vaspect_ratio)); -} - -#ifdef HAVE_OVERCLOCK -static void update_overclock(void) -{ -#ifdef M68K_OVERCLOCK_SHIFT - m68k.cycle_ratio = 1 << M68K_OVERCLOCK_SHIFT; -#endif -#ifdef Z80_OVERCLOCK_SHIFT - z80_cycle_ratio = 1 << Z80_OVERCLOCK_SHIFT; -#endif - if (overclock_delay == 0) - { - /* Cycle ratios multiply per-instruction cycle counts, so use - reciprocals */ -#ifdef M68K_OVERCLOCK_SHIFT - if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) - m68k.cycle_ratio = (100 << M68K_OVERCLOCK_SHIFT) / config.overclock; -#endif -#ifdef Z80_OVERCLOCK_SHIFT - if ((system_hw & SYSTEM_PBC) != SYSTEM_MD) - z80_cycle_ratio = (100 << Z80_OVERCLOCK_SHIFT) / config.overclock; -#endif - } -} -#endif - -static void check_variables(bool first_run) -{ - unsigned orig_value; - struct retro_system_av_info info; -#ifdef USE_PER_SOUND_CHANNELS_CONFIG - unsigned c; - char md_fm_channel_volume_base_str[] = "genesis_plus_gx_md_channel_0_volume"; - char sms_fm_channel_volume_base_str[] = "genesis_plus_gx_sms_fm_channel_0_volume"; - char psg_channel_volume_base_str[] = "genesis_plus_gx_psg_channel_0_volume"; -#endif - bool update_viewports = false; - bool reinit = false; - bool update_frameskip = false; - struct retro_variable var = {0}; - - if (first_run) - { - var.key = "genesis_plus_gx_system_bram"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "per bios")) - { - fill_pathname_join(CD_BRAM_EU, save_dir, "scd_E.brm", sizeof(CD_BRAM_EU)); - fill_pathname_join(CD_BRAM_US, save_dir, "scd_U.brm", sizeof(CD_BRAM_US)); - fill_pathname_join(CD_BRAM_JP, save_dir, "scd_J.brm", sizeof(CD_BRAM_JP)); - } - else - { - char newpath[4096]; - fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); - strlcat(newpath, ".brm", sizeof(newpath)); - strlcpy(CD_BRAM_EU, newpath, sizeof(CD_BRAM_EU)); - strlcpy(CD_BRAM_US, newpath, sizeof(CD_BRAM_US)); - strlcpy(CD_BRAM_JP, newpath, sizeof(CD_BRAM_JP)); - } - } - } - - if (first_run) - { - var.key = "genesis_plus_gx_cart_size"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (var.value && !strcmp(var.value, "disabled")) - cart_size = 0xff; - else if (var.value && !strcmp(var.value, "128k")) - cart_size = 1; - else if (var.value && !strcmp(var.value, "256k")) - cart_size = 2; - else if (var.value && !strcmp(var.value, "512k")) - cart_size = 3; - else if (var.value && !strcmp(var.value, "1meg")) - cart_size = 4; - else if (var.value && !strcmp(var.value, "2meg")) - cart_size = 5; - else if (var.value && !strcmp(var.value, "4meg")) - cart_size = 6; - } - } - - if (first_run) - { - var.key = "genesis_plus_gx_cart_bram"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 1) - { - fill_pathname_join(CART_BRAM, save_dir, "128Kbit_cart.brm", sizeof(CART_BRAM)); - } - else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 2) - { - fill_pathname_join(CART_BRAM, save_dir, "256Kbit_cart.brm", sizeof(CART_BRAM)); - } - else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 3) - { - fill_pathname_join(CART_BRAM, save_dir, "512Kbit_cart.brm", sizeof(CART_BRAM)); - } - else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 4) - { - fill_pathname_join(CART_BRAM, save_dir, "1Mbit_cart.brm", sizeof(CART_BRAM)); - } - else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 5) - { - fill_pathname_join(CART_BRAM, save_dir, "2Mbit_cart.brm", sizeof(CART_BRAM)); - } - else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 6) - { - fill_pathname_join(CART_BRAM, save_dir, "4Mbit_cart.brm", sizeof(CART_BRAM)); - } - else - { - if (cart_size == 1) - { - char newpath[4096]; - fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); - strlcat(newpath, "_128Kbit_cart.brm", sizeof(newpath)); - strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); - } - else if (cart_size == 2) - { - char newpath[4096]; - fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); - strlcat(newpath, "_256Kbit_cart.brm", sizeof(newpath)); - strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); - } - else if (cart_size == 3) - { - char newpath[4096]; - fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); - strlcat(newpath, "_512Kbit_cart.brm", sizeof(newpath)); - strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); - } - else if (cart_size == 4) - { - char newpath[4096]; - fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); - strlcat(newpath, "_1Mbit_cart.brm", sizeof(newpath)); - strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); - } - else if (cart_size == 5) - { - char newpath[4096]; - fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); - strlcat(newpath, "_2Mbit_cart.brm", sizeof(newpath)); - strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); - } - else if (cart_size == 6) - { - char newpath[4096]; - fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); - strlcat(newpath, "_4Mbit_cart.brm", sizeof(newpath)); - strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); - } - } - } - } - - var.key = "genesis_plus_gx_system_hw"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.system; - if (var.value && !strcmp(var.value, "sg-1000")) - config.system = SYSTEM_SG; - else if (var.value && !strcmp(var.value, "sg-1000 II")) - config.system = SYSTEM_SGII; - else if (var.value && !strcmp(var.value, "sg-1000 II + ram ext.")) - config.system = SYSTEM_SGII_RAM_EXT; - else if (var.value && !strcmp(var.value, "mark-III")) - config.system = SYSTEM_MARKIII; - else if (var.value && !strcmp(var.value, "master system")) - config.system = SYSTEM_SMS; - else if (var.value && !strcmp(var.value, "master system II")) - config.system = SYSTEM_SMS2; - else if (var.value && !strcmp(var.value, "game gear")) - config.system = SYSTEM_GG; - else if (var.value && !strcmp(var.value, "mega drive / genesis")) - config.system = SYSTEM_MD; - else - config.system = 0; - - if (orig_value != config.system) - { - if (system_hw) - { - switch (config.system) - { - case 0: - system_hw = romtype; /* AUTO */ - break; - - case SYSTEM_MD: - system_hw = (romtype & SYSTEM_MD) ? romtype : SYSTEM_PBC; - break; - - case SYSTEM_GG: - system_hw = (romtype == SYSTEM_GG) ? SYSTEM_GG : SYSTEM_GGMS; - break; - - default: - system_hw = config.system; - break; - } - - reinit = true; - } - } - } - - var.key = "genesis_plus_gx_bios"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.bios; - if (var.value && !strcmp(var.value, "enabled")) - config.bios = 3; - else - config.bios = 0; - - if (orig_value != config.bios) - { - if (system_hw) - { - reinit = true; - } - } - } - - var.key = "genesis_plus_gx_region_detect"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.region_detect; - if (var.value && !strcmp(var.value, "ntsc-u")) - config.region_detect = 1; - else if (var.value && !strcmp(var.value, "pal")) - config.region_detect = 2; - else if (var.value && !strcmp(var.value, "ntsc-j")) - config.region_detect = 3; - else - config.region_detect = 0; - - if (orig_value != config.region_detect) - { - if (system_hw) - { - get_region(NULL); - - if ((system_hw == SYSTEM_MCD) || ((system_hw & SYSTEM_SMS) && config.bios)) - { - /* system with region BIOS should be reinitialized */ - reinit = true; - } - else - { - static const uint16 vc_table[4][2] = - { - /* NTSC, PAL */ - {0xDA , 0xF2}, /* Mode 4 (192 lines) */ - {0xEA , 0x102}, /* Mode 5 (224 lines) */ - {0xDA , 0xF2}, /* Mode 4 (192 lines) */ - {0x106, 0x10A} /* Mode 5 (240 lines) */ - }; - - /* framerate might have changed, reinitialize audio timings */ - audio_set_rate(44100, 0); - - /* reinitialize I/O region register */ - if (system_hw == SYSTEM_MD) - { - io_reg[0x00] = 0x20 | region_code | (config.bios & 1); - } - else if (system_hw == SYSTEM_MCD) - { - io_reg[0x00] = region_code | (config.bios & 1); - } - else - { - io_reg[0x00] = 0x80 | (region_code >> 1); - } - - /* reinitialize VDP timings */ - lines_per_frame = vdp_pal ? 313 : 262; - - /* reinitialize NTSC/PAL mode in VDP status */ - if (system_hw & SYSTEM_MD) - { - status = (status & ~1) | vdp_pal; - } - - /* reinitialize VC max value */ - switch (bitmap.viewport.h) - { - case 192: - vc_max = vc_table[0][vdp_pal]; - break; - case 224: - vc_max = vc_table[1][vdp_pal]; - break; - case 240: - vc_max = vc_table[3][vdp_pal]; - break; - } - - update_viewports = true; - } - - update_frameskip = true; - } - } - } - - var.key = "genesis_plus_gx_force_dtack"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "enabled")) - config.force_dtack = 1; - else - config.force_dtack = 0; - } - - var.key = "genesis_plus_gx_addr_error"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "enabled")) - m68k.aerr_enabled = config.addr_error = 1; - else - m68k.aerr_enabled = config.addr_error = 0; - } - - var.key = "genesis_plus_gx_cd_latency"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "enabled")) - config.cd_latency = 1; - else - config.cd_latency = 0; - } - - var.key = "genesis_plus_gx_add_on"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.add_on; - if (var.value && !strcmp(var.value, "sega/mega cd")) - config.add_on = HW_ADDON_MEGACD; - else if (var.value && !strcmp(var.value, "megasd")) - config.add_on = HW_ADDON_MEGASD; - else if (var.value && !strcmp(var.value, "none")) - config.add_on = HW_ADDON_NONE; - else - config.add_on = HW_ADDON_AUTO; - /* note: game needs to be reloaded for change to take effect */ - } - - var.key = "genesis_plus_gx_lock_on"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.lock_on; - if (var.value && !strcmp(var.value, "game genie")) - config.lock_on = TYPE_GG; - else if (var.value && !strcmp(var.value, "action replay (pro)")) - config.lock_on = TYPE_AR; - else if (var.value && !strcmp(var.value, "sonic & knuckles")) - config.lock_on = TYPE_SK; - else - config.lock_on = 0; - - if (orig_value != config.lock_on) - { - if (system_hw == SYSTEM_MD) - reinit = true; - } - } - - var.key = "genesis_plus_gx_ym2413"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.ym2413; - if (var.value && !strcmp(var.value, "enabled")) - config.ym2413 = 1; - else if (var.value && !strcmp(var.value, "disabled")) - config.ym2413 = 0; - else - config.ym2413 = 2; - - if (orig_value != config.ym2413) - { - if (system_hw && (config.ym2413 & 2) && ((system_hw & SYSTEM_PBC) != SYSTEM_MD)) - { - memcpy(temp, sram.sram, sizeof(temp)); - sms_cart_init(); - memcpy(sram.sram, temp, sizeof(temp)); - } - } - } - -#ifdef HAVE_OPLL_CORE - var.key = "genesis_plus_gx_ym2413_core"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.opll; - if (var.value && !strcmp(var.value, "nuked")) - { - config.opll = 1; - } - else - { - config.opll = 0; - } - - if (((orig_value == 0) && (config.opll > 0)) || ((orig_value > 0) && (config.opll == 0))) - { - sound_init(); - sound_reset(); - } - } -#endif - - var.key = "genesis_plus_gx_sound_output"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (var.value && !strcmp(var.value, "mono")) - config.mono = 1; - else if (!var.value || !strcmp(var.value, "stereo")) - config.mono = 0; - } - - - var.key = "genesis_plus_gx_psg_preamp"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - config.psg_preamp = (!var.value) ? 150: atoi(var.value); - if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) - { - psg_config(0, config.psg_preamp, 0xff); - } - else - { - psg_config(0, config.psg_preamp, io_reg[6]); - } - } - - var.key = "genesis_plus_gx_fm_preamp"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - config.fm_preamp = (!var.value) ? 100: atoi(var.value); - } - - var.key = "genesis_plus_gx_cdda_volume"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - config.cdda_volume = (!var.value) ? 100: atoi(var.value); - } - - var.key = "genesis_plus_gx_pcm_volume"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - config.pcm_volume = (!var.value) ? 100: atoi(var.value); - } - - var.key = "genesis_plus_gx_audio_filter"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (var.value && !strcmp(var.value, "low-pass")) - config.filter = 1; - -#ifdef HAVE_EQ - else if (var.value && !strcmp(var.value, "EQ")) - config.filter = 2; -#endif - - else - config.filter = 0; - } - - var.key = "genesis_plus_gx_lowpass_range"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - config.lp_range = (!var.value) ? 0x9999 : ((atoi(var.value) * 65536) / 100); - } - -#ifdef HAVE_EQ - var.key = "genesis_plus_gx_audio_eq_low"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - uint8_t new_lg = (!var.value) ? 100 : atoi(var.value); - if (new_lg != config.lg) restart_eq = true; - config.lg = new_lg; - } - - var.key = "genesis_plus_gx_audio_eq_mid"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - uint8_t new_mg = (!var.value) ? 100 : atoi(var.value); - if (new_mg != config.mg) restart_eq = true; - config.mg = new_mg; - } - - var.key = "genesis_plus_gx_audio_eq_high"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - uint8_t new_hg = (!var.value) ? 100 : atoi(var.value); - if (new_hg != config.hg) restart_eq = true; - config.hg = new_hg; - - } -#endif - - var.key = "genesis_plus_gx_ym2612"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { -#ifdef HAVE_YM3438_CORE - orig_value = config.ym3438; - if (var.value && !strcmp(var.value, "nuked (ym2612)")) - { - OPN2_SetChipType(ym3438_mode_ym2612); - config.ym3438 = 1; - } - else if (var.value && !strcmp(var.value, "nuked (ym3438)")) - { - OPN2_SetChipType(ym3438_mode_readmode); - config.ym3438 = 2; - } - else - { - config.ym3438 = 0; - } - - if (((orig_value == 0) && (config.ym3438 > 0)) || ((orig_value > 0) && (config.ym3438 == 0))) - { - sound_init(); - sound_reset(); - } -#endif - - if (!var.value || !strcmp(var.value, "mame (ym2612)")) - { - config.ym2612 = YM2612_DISCRETE; - YM2612Config(YM2612_DISCRETE); - } - else if (var.value && !strcmp(var.value, "mame (asic ym3438)")) - { - config.ym2612 = YM2612_INTEGRATED; - YM2612Config(YM2612_INTEGRATED); - } - else - { - config.ym2612 = YM2612_ENHANCED; - YM2612Config(YM2612_ENHANCED); - } - } - - var.key = "genesis_plus_gx_frameskip"; - var.value = NULL; - orig_value = frameskip_type; - frameskip_type = 0; - - 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; - } - - update_frameskip = update_frameskip || (frameskip_type != orig_value); - - var.key = "genesis_plus_gx_frameskip_threshold"; - var.value = NULL; - frameskip_threshold = 33; - - if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) - frameskip_threshold = strtol(var.value, NULL, 10); - - var.key = "genesis_plus_gx_blargg_ntsc_filter"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.ntsc; - - if (!var.value || !strcmp(var.value, "disabled")) - config.ntsc = 0; - else if (var.value && !strcmp(var.value, "monochrome")) - { - config.ntsc = 1; - sms_ntsc_init(sms_ntsc, &sms_ntsc_monochrome); - md_ntsc_init(md_ntsc, &md_ntsc_monochrome); - } - else if (var.value && !strcmp(var.value, "composite")) - { - config.ntsc = 1; - sms_ntsc_init(sms_ntsc, &sms_ntsc_composite); - md_ntsc_init(md_ntsc, &md_ntsc_composite); - } - else if (var.value && !strcmp(var.value, "svideo")) - { - config.ntsc = 1; - sms_ntsc_init(sms_ntsc, &sms_ntsc_svideo); - md_ntsc_init(md_ntsc, &md_ntsc_svideo); - } - else if (var.value && !strcmp(var.value, "rgb")) - { - config.ntsc = 1; - sms_ntsc_init(sms_ntsc, &sms_ntsc_rgb); - md_ntsc_init(md_ntsc, &md_ntsc_rgb); - } - - if (orig_value != config.ntsc) - update_viewports = true; - } - - var.key = "genesis_plus_gx_lcd_filter"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "disabled")) - config.lcd = 0; - else if (var.value && !strcmp(var.value, "enabled")) - config.lcd = (uint8)(0.80 * 256); - } - - var.key = "genesis_plus_gx_overscan"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.overscan; - if (!var.value || !strcmp(var.value, "disabled")) - config.overscan = 0; - else if (var.value && !strcmp(var.value, "top/bottom")) - config.overscan = 1; - else if (var.value && !strcmp(var.value, "left/right")) - config.overscan = 2; - else if (var.value && !strcmp(var.value, "full")) - config.overscan = 3; - if (orig_value != config.overscan) - update_viewports = true; - } - - var.key = "genesis_plus_gx_gg_extra"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.gg_extra; - if (!var.value || !strcmp(var.value, "disabled")) - config.gg_extra = 0; - else if (var.value && !strcmp(var.value, "enabled")) - config.gg_extra = 1; - if (orig_value != config.gg_extra) - update_viewports = true; - } - - var.key = "genesis_plus_gx_aspect_ratio"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.aspect_ratio; - if (var.value && !strcmp(var.value, "NTSC PAR")) - config.aspect_ratio = 1; - else if (var.value && !strcmp(var.value, "PAL PAR")) - config.aspect_ratio = 2; - else if (var.value && !strcmp(var.value, "4:3")) - config.aspect_ratio = 3; - else if (var.value && !strcmp(var.value, "Uncorrected")) - config.aspect_ratio = 4; - else - config.aspect_ratio = 0; - if (orig_value != config.aspect_ratio) - update_viewports = true; - } - - var.key = "genesis_plus_gx_render"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.render; - if (!var.value || !strcmp(var.value, "single field")) - config.render = 0; - else - config.render = 1; - if (orig_value != config.render) - update_viewports = true; - } - - var.key = "genesis_plus_gx_gun_cursor"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "disabled")) - config.gun_cursor = 0; - else - config.gun_cursor = 1; - } - - var.key = "genesis_plus_gx_gun_input"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "touchscreen")) - retro_gun_mode = RetroPointer; - else - retro_gun_mode = RetroLightgun; - } - - var.key = "genesis_plus_gx_invert_mouse"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "disabled")) - config.invert_mouse = 0; - else - config.invert_mouse = 1; - } - - var.key = "genesis_plus_gx_left_border"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - orig_value = config.left_border; - if (!var.value || !strcmp(var.value, "disabled")) - config.left_border = 0; - else if (var.value && !strcmp(var.value, "left border")) - config.left_border = 1; - else if (var.value && !strcmp(var.value, "left & right borders")) - config.left_border = 2; - if (orig_value != config.left_border) - update_viewports = true; - } - -#ifdef HAVE_OVERCLOCK - var.key = "genesis_plus_gx_overclock"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - config.overclock = (!var.value) ? 100 : atoi(var.value); - - if (system_hw) - update_overclock(); - } -#endif - - var.key = "genesis_plus_gx_no_sprite_limit"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "disabled")) - config.no_sprite_limit = 0; - else - config.no_sprite_limit = 1; - } - - var.key = "genesis_plus_gx_enhanced_vscroll"; - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); - { - if (!var.value || !strcmp(var.value, "disabled")) - config.enhanced_vscroll = 0; - else - config.enhanced_vscroll = 1; - } - - var.key = "genesis_plus_gx_enhanced_vscroll_limit"; - if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) - config.enhanced_vscroll_limit = strtol(var.value, NULL, 10); - -#ifdef USE_PER_SOUND_CHANNELS_CONFIG - var.key = psg_channel_volume_base_str; - for (c = 0; c < 4; c++) - { - psg_channel_volume_base_str[28] = c+'0'; - if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var)) - { - config.psg_ch_volumes[c] = atoi(var.value); - /* need to recall config to have the settings applied */ - if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) - psg_config(0, config.psg_preamp, 0xff); - else - psg_config(0, config.psg_preamp, io_reg[6]); - } - } - - var.key = md_fm_channel_volume_base_str; - for (c = 0; c < 6; c++) - { - md_fm_channel_volume_base_str[27] = c+'0'; - if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var)) - config.md_ch_volumes[c] = atoi(var.value); - } - - var.key = sms_fm_channel_volume_base_str; - for (c = 0; c < 9; c++) - { - sms_fm_channel_volume_base_str[31] = c+'0'; - if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var)) - config.sms_fm_ch_volumes[c] = atoi(var.value); - } - - var.key = "genesis_plus_gx_show_advanced_audio_settings"; - var.value = NULL; - - /* If frontend supports core option categories, - * then genesis_plus_gx_show_advanced_audio_settings - * is ignored and no options should be hidden */ - - if (!libretro_supports_option_categories && - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) - { - bool show_advanced_av_settings_prev = show_advanced_av_settings; - - show_advanced_av_settings = true; - if (strcmp(var.value, "disabled") == 0) - show_advanced_av_settings = false; - - if (show_advanced_av_settings != show_advanced_av_settings_prev) - { - size_t i; - struct retro_core_option_display option_display; - char av_keys[19][40] = { - "genesis_plus_gx_psg_channel_0_volume", - "genesis_plus_gx_psg_channel_1_volume", - "genesis_plus_gx_psg_channel_2_volume", - "genesis_plus_gx_psg_channel_3_volume", - "genesis_plus_gx_md_channel_0_volume", - "genesis_plus_gx_md_channel_1_volume", - "genesis_plus_gx_md_channel_2_volume", - "genesis_plus_gx_md_channel_3_volume", - "genesis_plus_gx_md_channel_4_volume", - "genesis_plus_gx_md_channel_5_volume", - "genesis_plus_gx_sms_fm_channel_0_volume", - "genesis_plus_gx_sms_fm_channel_1_volume", - "genesis_plus_gx_sms_fm_channel_2_volume", - "genesis_plus_gx_sms_fm_channel_3_volume", - "genesis_plus_gx_sms_fm_channel_4_volume", - "genesis_plus_gx_sms_fm_channel_5_volume", - "genesis_plus_gx_sms_fm_channel_6_volume", - "genesis_plus_gx_sms_fm_channel_7_volume", - "genesis_plus_gx_sms_fm_channel_8_volume" - }; - - option_display.visible = show_advanced_av_settings; - - for (i = 0; i < 19; i++) - { - option_display.key = av_keys[i]; - environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_DISPLAY, &option_display); - } - } - } -#endif - - if (reinit) - { -#ifdef HAVE_OVERCLOCK - overclock_delay = OVERCLOCK_FRAME_DELAY; -#endif - audio_init(SOUND_FREQUENCY, 0); - memcpy(temp, sram.sram, sizeof(temp)); - system_init(); - system_reset(); - memcpy(sram.sram, temp, sizeof(temp)); - update_viewports = true; - } - - if (update_viewports) - { - bitmap.viewport.changed = 11; - if ((system_hw == SYSTEM_GG) && !config.gg_extra) - bitmap.viewport.x = (config.overscan & 2) ? 14 : -48; - else - bitmap.viewport.x = (config.overscan & 2) * 7 ; - } - - /* Reinitialise frameskipping, if required */ - if ((update_frameskip || reinit) && !first_run) - init_frameskip(); -} - -/* Cheat Support */ -static uint32_t decode_cheat(char *string, int index) -{ - char *p; - int i,n; - uint32_t len = 0; - uint32_t address = 0; - uint16_t data = 0; - uint8_t ref = 0; - - if ((system_hw & SYSTEM_PBC) == SYSTEM_MD){ - /*If system is Genesis-based*/ - - /*Game-Genie*/ - if ((strlen(string) >= 9) && (string[4] == '-')) - { - for (i = 0; i < 8; i++) - { - if (i == 4) string++; - p = strchr (ggvalidchars, *string++); - if (!p) - return 0; - n = p - ggvalidchars; - switch (i) - { - case 0: - data |= n << 3; - break; - case 1: - data |= n >> 2; - address |= (n & 3) << 14; - break; - case 2: - address |= n << 9; - break; - case 3: - address |= (n & 0xF) << 20 | (n >> 4) << 8; - break; - case 4: - data |= (n & 1) << 12; - address |= (n >> 1) << 16; - break; - case 5: - data |= (n & 1) << 15 | (n >> 1) << 8; - break; - case 6: - data |= (n >> 3) << 13; - address |= (n & 7) << 5; - break; - case 7: - address |= n; - break; - } - } - /* code length */ - len = 9; - } - - /*Patch and PAR*/ - else if ((strlen(string) >=9) && (string[6] == ':')) - { - /* decode 24-bit address */ - for (i=0; i<6; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - address |= (n << ((5 - i) * 4)); - } - /* decode 16-bit data */ - string++; - for (i=0; i<4; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - break; - n = (p - arvalidchars) & 0xF; - data |= (n << ((3 - i) * 4)); - } - /* code length */ - len = 11; - } - } else { - /*If System is Master-based*/ - - /*Game Genie*/ - if ((strlen(string) >=7) && (string[3] == '-')) - { - /* decode 8-bit data */ - for (i=0; i<2; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - data |= (n << ((1 - i) * 4)); - } - - /* decode 16-bit address (low 12-bits) */ - for (i=0; i<3; i++) - { - if (i==1) string++; /* skip separator */ - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - address |= (n << ((2 - i) * 4)); - } - /* decode 16-bit address (high 4-bits) */ - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - n ^= 0xF; /* bits inversion */ - address |= (n << 12); - /* Optional: decode reference 8-bit data */ - if (*string=='-') - { - for (i=0; i<2; i++) - { - string++; /* skip separator and 2nd digit */ - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - ref |= (n << ((1 - i) * 4)); - } - ref = (ref >> 2) | ((ref & 0x03) << 6); /* 2-bit right rotation */ - ref ^= 0xBA; /* XOR */ - /* code length */ - len = 11; - } - else - { - /* code length */ - len = 7; - } - } - - /*Action Replay*/ - else if ((strlen(string) >=9) && (string[4] == '-')){ - string+=2; - /* decode 16-bit address */ - for (i=0; i<4; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - address |= (n << ((3 - i) * 4)); - if (i==1) string++; - } - /* decode 8-bit data */ - for (i=0; i<2; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - data |= (n << ((1 - i) * 4)); - } - /* code length */ - len = 9; - } - - /*Fusion RAM*/ - else if ((strlen(string) >=7) && (string[4] == ':')) - { - /* decode 16-bit address */ - for (i=0; i<4; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - address |= (n << ((3 - i) * 4)); - } - /* decode 8-bit data */ - string++; - for (i=0; i<2; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - data |= (n << ((1 - i) * 4)); - } - /* code length */ - len = 7; - } - - /*Fusion ROM*/ - else if ((strlen(string) >=9) && (string[6] == ':')) - { - /* decode reference 8-bit data */ - for (i=0; i<2; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - ref |= (n << ((1 - i) * 4)); - } - /* decode 16-bit address */ - for (i=0; i<4; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - address |= (n << ((3 - i) * 4)); - } - /* decode 8-bit data */ - string++; - for (i=0; i<2; i++) - { - p = strchr (arvalidchars, *string++); - if (!p) - return 0; - n = (p - arvalidchars) & 0xF; - data |= (n << ((1 - i) * 4)); - } - /* code length */ - len = 9; - } - /* convert to 24-bit Work RAM address */ - if (address >= 0xC000) - address = 0xFF0000 | (address & 0x1FFF); - } - /* Valid code found ? */ - if (len) - { - /* update cheat address & data values */ - cheatlist[index].address = address; - cheatlist[index].data = data; - cheatlist[index].old = ref; - } - /* return code length (0 = invalid) */ - return len; -} - -static void apply_cheats(void) -{ - uint8_t *ptr; - int i; - /* clear ROM&RAM patches counter */ - maxROMcheats = maxRAMcheats = 0; - - for (i = 0; i < maxcheats; i++) - { - if (cheatlist[i].enable) - { - /* detect Work RAM patch */ - if (cheatlist[i].address >= 0xFF0000) - { - /* add RAM patch */ - cheatIndexes[maxRAMcheats++] = i; - } - - /* check if Mega-CD game is running */ - else if ((system_hw == SYSTEM_MCD) && !scd.cartridge.boot) - { - /* detect PRG-RAM patch (Sub-CPU side) */ - if (cheatlist[i].address < 0x80000) - { - /* add RAM patch */ - cheatIndexes[maxRAMcheats++] = i; - } - - /* detect Word-RAM patch (Main-CPU side)*/ - else if ((cheatlist[i].address >= 0x200000) && (cheatlist[i].address < 0x240000)) - { - /* add RAM patch */ - cheatIndexes[maxRAMcheats++] = i; - } - } - - /* detect cartridge ROM patch */ - else if (cheatlist[i].address < cart.romsize) - { - if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) - { - /* patch ROM data */ - cheatlist[i].old = *(uint16_t *)(cart.rom + (cheatlist[i].address & 0xFFFFFE)); - *(uint16_t *)(cart.rom + (cheatlist[i].address & 0xFFFFFE)) = cheatlist[i].data; - } - else - { - /* add ROM patch */ - maxROMcheats++; - cheatIndexes[MAX_CHEATS - maxROMcheats] = i; - /* get current banked ROM address */ - ptr = &z80_readmap[(cheatlist[i].address) >> 10][cheatlist[i].address & 0x03FF]; - /* check if reference matches original ROM data */ - if (((uint8_t)cheatlist[i].old) == *ptr) - { - /* patch data */ - *ptr = cheatlist[i].data; - /* save patched ROM address */ - cheatlist[i].prev = ptr; - } - else - { - /* no patched ROM address yet */ - cheatlist[i].prev = NULL; - } - } - } - } - } -} - -static void clear_cheats(void) -{ - int i; - - /* no ROM patches with Mega-CD games */ - if ((system_hw == SYSTEM_MCD) && !scd.cartridge.boot) - return; - - /* disable cheats in reversed order in case the same address is used by multiple ROM patches */ - i = maxcheats; - while (i > 0) - { - if (cheatlist[i-1].enable) - { - if (cheatlist[i-1].address < cart.romsize) - { - if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) - { - /* restore original ROM data */ - *(uint16_t *)(cart.rom + (cheatlist[i-1].address & 0xFFFFFE)) = cheatlist[i-1].old; - } - else - { - /* check if previous banked ROM address has been patched */ - if (cheatlist[i-1].prev != NULL) - { - /* restore original data */ - *cheatlist[i-1].prev = cheatlist[i-1].old; - /* no more patched ROM address */ - cheatlist[i-1].prev = NULL; - } - } - } - } - i--; - } -} - -/**************************************************************************** -* RAMCheatUpdate -* -* Apply RAM patches (this should be called once per frame) -* -****************************************************************************/ -static void RAMCheatUpdate(void) -{ - uint8_t *base; - uint32_t mask; - int index, cnt = maxRAMcheats; - - while (cnt) - { - /* get cheat index */ - index = cheatIndexes[--cnt]; - - /* detect destination RAM */ - switch ((cheatlist[index].address >> 20) & 0xf) - { - case 0x0: /* Mega-CD PRG-RAM (512 KB) */ - base = scd.prg_ram; - mask = 0x7fffe; - break; - - case 0x2: /* Mega-CD 2M Word-RAM (256 KB) */ - base = scd.word_ram_2M; - mask = 0x3fffe; - break; - - default: /* Work-RAM (64 KB) */ - base = work_ram; - mask = 0xfffe; - break; - } - - /* apply RAM patch */ - if (cheatlist[index].data & 0xFF00) - { - /* word patch */ - *(uint16_t *)(base + (cheatlist[index].address & mask)) = cheatlist[index].data; - } - else - { - /* byte patch */ - mask |= 1; - base[cheatlist[index].address & mask] = cheatlist[index].data; - } - } -} - -/**************************************************************************** - * ROMCheatUpdate - * - * Apply ROM patches (this should be called each time banking is changed) - * - ****************************************************************************/ -void ROMCheatUpdate(void) -{ - int index, cnt = maxROMcheats; - uint8_t *ptr; - - while (cnt) - { - /* get cheat index */ - index = cheatIndexes[MAX_CHEATS - cnt]; - - /* check if previous banked ROM address was patched */ - if (cheatlist[index].prev != NULL) - { - /* restore original data */ - *cheatlist[index].prev = cheatlist[index].old; - - /* no more patched ROM address */ - cheatlist[index].prev = NULL; - } - - /* get current banked ROM address */ - ptr = &z80_readmap[(cheatlist[index].address) >> 10][cheatlist[index].address & 0x03FF]; - - /* check if reference exists and matches original ROM data */ - if (!cheatlist[index].old || ((uint8_t)cheatlist[index].old) == *ptr) - { - /* patch data */ - *ptr = cheatlist[index].data; - - /* save patched ROM address */ - cheatlist[index].prev = ptr; - } - - /* next ROM patch */ - cnt--; - } -} - -static void set_memory_maps(void) -{ - if (system_hw == SYSTEM_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, work_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, scd.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); - } -} - -/**************************************************************************** - * Disk control interface - ****************************************************************************/ -#define MAX_DISKS 4 -static int disk_index; -static int disk_count; -static char *disk_info[MAX_DISKS]; - -static bool disk_set_eject_state(bool ejected) -{ - if (system_hw != SYSTEM_MCD) - return false; - - if (ejected) - { - cdd.status = CD_OPEN; - scd.regs[0x36>>1].byte.h = 0x01; - } - else if (cdd.status == CD_OPEN) - { - cdd.status = cdd.loaded ? CD_TOC : NO_DISC; - } - - return true; -} - -static bool disk_get_eject_state(void) -{ - if (system_hw != SYSTEM_MCD) - return false; - - return (cdd.status == CD_OPEN); -} - -static unsigned int disk_get_image_index(void) -{ - if ((system_hw != SYSTEM_MCD) || !cdd.loaded) - return disk_count; - - return disk_index; -} - -static bool disk_set_image_index(unsigned int index) -{ - char header[0x210]; - - if (system_hw != SYSTEM_MCD) - return false; - - if (index >= disk_count) - { - cdd.loaded = 0; - return true; - } - - if (disk_info[index] == NULL) - return false; - - cdd_load(disk_info[index], header); - - if (!cdd.loaded) - return false; - - disk_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) -{ - if (system_hw != SYSTEM_MCD) - return false; - - if (index >= disk_count) - return false; - - if (disk_info[index] != NULL) - free(disk_info[index]); - - disk_info[index] = NULL; - - if (info != NULL) - { - if (info->path == NULL) - return false; - - disk_info[index] = strdup(info->path); - - if (index == disk_index) - return disk_set_image_index(index); - } - else - { - int i = index; - - while (i < (disk_count-1)) - { - disk_info[i] = disk_info[i+1]; - disk_info[i+1] = NULL; - } - - disk_count--; - - if (index < disk_index) - disk_index--; - } - - return true; -} - -static bool disk_add_image_index(void) -{ - if (system_hw != SYSTEM_MCD) - return false; - - if (disk_count >= MAX_DISKS) - return false; - - disk_count++; - return true; -} - -static struct retro_disk_control_callback disk_ctrl = -{ - 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 -}; - -/************************************ - * libretro implementation - ************************************/ -unsigned retro_api_version(void) { return RETRO_API_VERSION; } - -void retro_set_environment(retro_environment_t cb) -{ - bool option_categories = false; - struct retro_vfs_interface_info vfs_iface_info; - struct retro_led_interface led_interface; - - static const struct retro_controller_description port_1[] = { - { "Joypad Auto", RETRO_DEVICE_JOYPAD }, - { "Joypad Port Empty", RETRO_DEVICE_NONE }, - { "MD Joypad 3 Button", RETRO_DEVICE_MDPAD_3B }, - { "MD Joypad 6 Button", RETRO_DEVICE_MDPAD_6B }, - { "MS Joypad 2 Button", RETRO_DEVICE_MSPAD_2B }, - { "MD Joypad 3 Button + 4-WayPlay", RETRO_DEVICE_MDPAD_3B_WAYPLAY }, - { "MD Joypad 6 Button + 4-WayPlay", RETRO_DEVICE_MDPAD_6B_WAYPLAY }, - { "MD Joypad 3 Button + Teamplayer", RETRO_DEVICE_MDPAD_3B_TEAMPLAYER }, - { "MD Joypad 6 Button + Teamplayer", RETRO_DEVICE_MDPAD_6B_TEAMPLAYER }, - { "MS Joypad 2 Button + Master Tap", RETRO_DEVICE_MSPAD_2B_MASTERTAP }, - { "MS Light Phaser", RETRO_DEVICE_PHASER }, - { "MS Paddle Control", RETRO_DEVICE_PADDLE }, - { "MS Sports Pad", RETRO_DEVICE_SPORTSPAD }, - { "MS Graphic Board", RETRO_DEVICE_GRAPHIC_BOARD }, - { "MD XE-1AP", RETRO_DEVICE_XE_1AP }, - { "MD Mouse", RETRO_DEVICE_MOUSE }, - }; - - static const struct retro_controller_description port_2[] = { - { "Joypad Auto", RETRO_DEVICE_JOYPAD }, - { "Joypad Port Empty", RETRO_DEVICE_NONE }, - { "MD Joypad 3 Button", RETRO_DEVICE_MDPAD_3B }, - { "MD Joypad 6 Button", RETRO_DEVICE_MDPAD_6B }, - { "MS Joypad 2 Button", RETRO_DEVICE_MSPAD_2B }, - { "MD Joypad 3 Button + 4-WayPlay", RETRO_DEVICE_MDPAD_3B_WAYPLAY }, - { "MD Joypad 6 Button + 4-WayPlay", RETRO_DEVICE_MDPAD_6B_WAYPLAY }, - { "MD Joypad 3 Button + Teamplayer", RETRO_DEVICE_MDPAD_3B_TEAMPLAYER }, - { "MD Joypad 6 Button + Teamplayer", RETRO_DEVICE_MDPAD_6B_TEAMPLAYER }, - { "MS Joypad 2 Button + Master Tap", RETRO_DEVICE_MSPAD_2B_MASTERTAP }, - { "MD Menacer", RETRO_DEVICE_MENACER }, - { "MD Justifiers", RETRO_DEVICE_JUSTIFIERS }, - { "MS Light Phaser", RETRO_DEVICE_PHASER }, - { "MS Paddle Control", RETRO_DEVICE_PADDLE }, - { "MS Sports Pad", RETRO_DEVICE_SPORTSPAD }, - { "MS Graphic Board", RETRO_DEVICE_GRAPHIC_BOARD }, - { "MD XE-1AP", RETRO_DEVICE_XE_1AP }, - { "MD Mouse", RETRO_DEVICE_MOUSE }, - }; - - static const struct retro_controller_info ports[] = { - { port_1, 16 }, - { port_2, 18 }, - { 0 }, - }; - - static const 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" }, - - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, - { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, - - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, - { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, - - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, - { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, - - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, - { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, - - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, - { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, - - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, - { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, - - { 0 }, - }; - - static const struct retro_system_content_info_override content_overrides[] = { - { - "mdx|md|bin|smd|gen|bms|sms|gg|sg|68k|sgd", /* extensions */ -#if defined(LOW_MEMORY) - true, /* need_fullpath */ -#else - false, /* need_fullpath */ -#endif - false /* persistent_data */ - }, - { NULL, false, false } - }; - - environ_cb = cb; - - /* An annoyance: retro_set_environment() can be called - * multiple times, and depending upon the current frontend - * state various environment callbacks may be disabled. - * This means the reported 'categories_supported' status - * may change on subsequent iterations. We therefore have - * to record whether 'categories_supported' is true on any - * iteration, and latch the result */ - libretro_set_core_options(environ_cb, &option_categories); - libretro_supports_option_categories |= option_categories; - - /* If frontend supports core option categories, - * genesis_plus_gx_show_advanced_audio_settings - * is unused and should be hidden */ - if (libretro_supports_option_categories) - { - struct retro_core_option_display option_display; - - option_display.visible = false; - option_display.key = "genesis_plus_gx_show_advanced_audio_settings"; - - environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_DISPLAY, - &option_display); - } - - cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports); - cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, (void*)desc); - cb(RETRO_ENVIRONMENT_SET_CONTENT_INFO_OVERRIDE, (void*)content_overrides); - - vfs_iface_info.required_interface_version = 2; - vfs_iface_info.iface = NULL; - if (environ_cb(RETRO_ENVIRONMENT_GET_VFS_INTERFACE, &vfs_iface_info)) - filestream_vfs_init(&vfs_iface_info); - - if (environ_cb(RETRO_ENVIRONMENT_GET_LED_INTERFACE, &led_interface)) { - if (led_interface.set_led_state && !led_state_cb) - led_state_cb = led_interface.set_led_state; - } -} - -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_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; } - - -void retro_get_system_info(struct retro_system_info *info) -{ - info->library_name = "Genesis Plus GX"; -#ifndef GIT_VERSION -#define GIT_VERSION "" -#endif - info->library_version = "v1.7.4" GIT_VERSION; - info->valid_extensions = "m3u|mdx|md|smd|gen|bin|cue|iso|chd|bms|sms|gg|sg|68k|sgd"; - info->block_extract = false; - info->need_fullpath = true; -} - -void retro_get_system_av_info(struct retro_system_av_info *info) -{ - info->geometry.base_width = vwidth; - info->geometry.base_height = bitmap.viewport.h + (2 * bitmap.viewport.y); - /* Set maximum dimensions based upon emulated system/config */ - if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) - { - /* 16 bit system */ - if (config.ntsc) { - info->geometry.max_width = MD_NTSC_OUT_WIDTH(320 + (bitmap.viewport.x * 2)); - } else { - info->geometry.max_width = 320 + (bitmap.viewport.x * 2); - } - if (config.render) { - info->geometry.max_height = 480 + (vdp_pal * 96 * (config.overscan & 1)); - } else { - info->geometry.max_height = 240 + (vdp_pal * 48 * (config.overscan & 1)); - } - } - else - { - /* 8 bit system */ - if (config.ntsc) { - info->geometry.max_width = SMS_NTSC_OUT_WIDTH(256 + (bitmap.viewport.x * 2)); - } else { - info->geometry.max_width = 256 + (bitmap.viewport.x * 2); - } - info->geometry.max_height = 240 + (vdp_pal * 48 * (config.overscan & 1)); - } - info->geometry.aspect_ratio = vaspect_ratio; - info->timing.fps = (double)(system_clock) / (double)lines_per_frame / (double)MCYCLES_PER_LINE; - info->timing.sample_rate = SOUND_FREQUENCY; -} - -void retro_set_controller_port_device(unsigned port, unsigned device) -{ - if (port > 1) - return; - - switch(device) - { - case RETRO_DEVICE_NONE: - input.system[port] = NO_SYSTEM; - break; - case RETRO_DEVICE_MDPAD_3B: - { - if (port && (input.system[0] >= SYSTEM_MASTERTAP) && (input.system[0] <= SYSTEM_WAYPLAY)) - config.input[4].padtype = DEVICE_PAD3B; - else - config.input[port].padtype = DEVICE_PAD3B; - input.system[port] = SYSTEM_GAMEPAD; - break; - } - case RETRO_DEVICE_MDPAD_6B: - { - if (port && (input.system[0] >= SYSTEM_MASTERTAP) && (input.system[0] <= SYSTEM_WAYPLAY)) - config.input[4].padtype = DEVICE_PAD6B; - else - config.input[port].padtype = DEVICE_PAD6B; - input.system[port] = SYSTEM_GAMEPAD; - break; - } - case RETRO_DEVICE_MSPAD_2B: - { - if (port && (input.system[0] >= SYSTEM_MASTERTAP) && (input.system[0] <= SYSTEM_WAYPLAY)) - config.input[4].padtype = DEVICE_PAD2B; - else - config.input[port].padtype = DEVICE_PAD2B; - input.system[port] = SYSTEM_GAMEPAD; - break; - } - case RETRO_DEVICE_MDPAD_3B_WAYPLAY: - { - int i; - for (i=0; i<4; i++) - { - config.input[i].padtype = DEVICE_PAD3B; - } - input.system[0] = input.system[1] = SYSTEM_WAYPLAY; - break; - } - case RETRO_DEVICE_MDPAD_6B_WAYPLAY: - { - int i; - for (i=0; i<4; i++) - { - config.input[i].padtype = DEVICE_PAD6B; - } - input.system[0] = input.system[1] = SYSTEM_WAYPLAY; - break; - } - case RETRO_DEVICE_MDPAD_3B_TEAMPLAYER: - { - int i; - for (i=0; i<4; i++) - { - config.input[port*4 + i].padtype = DEVICE_PAD3B; - } - input.system[port] = SYSTEM_TEAMPLAYER; - break; - } - case RETRO_DEVICE_MDPAD_6B_TEAMPLAYER: - { - int i; - for (i=0; i<4; i++) - { - config.input[port*4 + i].padtype = DEVICE_PAD6B; - } - input.system[port] = SYSTEM_TEAMPLAYER; - break; - } - case RETRO_DEVICE_MSPAD_2B_MASTERTAP: - { - int i; - for (i=0; i<4; i++) - { - config.input[port*4 + i].padtype = DEVICE_PAD2B; - } - input.system[port] = SYSTEM_MASTERTAP; - break; - } - case RETRO_DEVICE_MENACER: - input.system[1] = SYSTEM_MENACER; - break; - case RETRO_DEVICE_JUSTIFIERS: - input.system[1] = SYSTEM_JUSTIFIER; - break; - case RETRO_DEVICE_PHASER: - input.system[port] = SYSTEM_LIGHTPHASER; - break; - case RETRO_DEVICE_PADDLE: - input.system[port] = SYSTEM_PADDLE; - break; - case RETRO_DEVICE_SPORTSPAD: - input.system[port] = SYSTEM_SPORTSPAD; - break; - case RETRO_DEVICE_XE_1AP: - input.system[port] = SYSTEM_XE_1AP; - break; - case RETRO_DEVICE_MOUSE: - input.system[port] = SYSTEM_MOUSE; - break; - case RETRO_DEVICE_GRAPHIC_BOARD: - input.system[port] = SYSTEM_GRAPHIC_BOARD; - break; - case RETRO_DEVICE_JOYPAD: - default: - { - if (port && (input.system[0] >= SYSTEM_MASTERTAP) && (input.system[0] <= SYSTEM_WAYPLAY)) - config.input[4].padtype = DEVICE_PAD2B | DEVICE_PAD6B | DEVICE_PAD3B; - else - config.input[port].padtype = DEVICE_PAD2B | DEVICE_PAD6B | DEVICE_PAD3B; - input.system[port] = SYSTEM_GAMEPAD; - break; - } - } - - old_system[0] = input.system[0]; - old_system[1] = input.system[1]; - - io_init(); - input_reset(); -} - -size_t retro_serialize_size(void) { return STATE_SIZE; } - -extern int8 fast_savestates; - -bool get_fast_savestates(void) -{ - int result = -1; - bool okay = false; - okay = environ_cb(RETRO_ENVIRONMENT_GET_AUDIO_VIDEO_ENABLE, &result); - if (okay) - { - return 0 != (result & 4); - } - else - { - return 0; - } -} - -bool retro_serialize(void *data, size_t size) -{ - fast_savestates = get_fast_savestates(); - if (size != STATE_SIZE) - return FALSE; - - state_save(data); - if (fast_savestates) save_sound_buffer(); - - return TRUE; -} - -bool retro_unserialize(const void *data, size_t size) -{ - fast_savestates = get_fast_savestates(); - if (size != STATE_SIZE) - return FALSE; - - if (!state_load((uint8_t*)data)) - return FALSE; - - if (fast_savestates) restore_sound_buffer(); - -#ifdef HAVE_OVERCLOCK - update_overclock(); -#endif - - return TRUE; -} - -void retro_cheat_reset(void) -{ - /* clear existing ROM patches */ - clear_cheats(); - /* delete all cheats */ - maxcheats = maxROMcheats = maxRAMcheats = 0; -} - -void retro_cheat_set(unsigned index, bool enabled, const char *code) -{ - char codeCopy[256]; - char *buff; - - /* Avoid crashing when giving no input */ - if (code==NULL) return; - - /* clear existing ROM patches */ - clear_cheats(); - - /* Detect and split multiline cheats */ - strncpy(codeCopy,code,255); - codeCopy[255] = '\0'; - buff = strtok(codeCopy,"+"); - - while (buff != NULL) - { - /* interpret code and check if this is a valid cheat code */ - if (decode_cheat((char *)buff, maxcheats)) - { - int i; - - /* check if cheat code already exists */ - for (i=0; idata; - g_rom_size = info_ext->size; -#endif - strncpy(g_rom_dir, info_ext->dir, sizeof(g_rom_dir)); - g_rom_dir[sizeof(g_rom_dir) - 1] = '\0'; - - strncpy(g_rom_name, info_ext->name, sizeof(g_rom_name)); - g_rom_name[sizeof(g_rom_name) - 1] = '\0'; - - strncpy(content_ext, info_ext->ext, sizeof(content_ext)); - content_ext[sizeof(content_ext) - 1] = '\0'; - - if (info_ext->file_in_archive) - { - /* We don't have a 'physical' file in this - * case, but the core still needs a filename - * in order to detect associated content - * (Mega CD Mode 1/MegaSD MD+ mode). We therefore - * fake it, using the content directory, - * canonical content name, and content file - * extension */ - snprintf(content_path, sizeof(content_path), "%s%c%s.%s", - g_rom_dir, slash, g_rom_name, content_ext); - } - else - { - strncpy(content_path, info_ext->full_path, sizeof(content_path)); - content_path[sizeof(content_path) - 1] = '\0'; - } - } - else - { - const char *ext = NULL; - - if (!info || !info->path) - goto error; - - extract_directory(g_rom_dir, info->path, sizeof(g_rom_dir)); - extract_name(g_rom_name, info->path, sizeof(g_rom_name)); - - strncpy(content_path, info->path, sizeof(content_path)); - content_path[sizeof(content_path) - 1] = '\0'; - - if (ext = strrchr(info->path, '.')) - { - strncpy(content_ext, ext + 1, sizeof(content_ext)); - content_ext[sizeof(content_ext) - 1] = '\0'; - } - } - -#ifdef FRONTEND_SUPPORTS_RGB565 - { - unsigned rgb565 = RETRO_PIXEL_FORMAT_RGB565; - if(environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &rgb565)) - if (log_cb) - log_cb(RETRO_LOG_INFO, "Frontend supports RGB565 - will use that instead of XRGB1555.\n"); - } -#endif - - sms_ntsc = calloc(1, sizeof(sms_ntsc_t)); - md_ntsc = calloc(1, sizeof(md_ntsc_t)); - - init_bitmap(); - config_default(); - - if (!environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) || !dir) - { - if (log_cb) - log_cb(RETRO_LOG_INFO, "[genplus]: Defaulting system directory to %s.\n", g_rom_dir); - dir = g_rom_dir; - } - - if (!environ_cb(RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY, &save_dir) || !save_dir) - { - if (log_cb) - log_cb(RETRO_LOG_INFO, "[genplus]: Defaulting save directory to %s.\n", g_rom_dir); - save_dir = g_rom_dir; - } - - fill_pathname_join(GG_ROM, dir, "ggenie.bin", sizeof(GG_ROM)); - fill_pathname_join(AR_ROM, dir, "areplay.bin", sizeof(AR_ROM)); - fill_pathname_join(SK_ROM, dir, "sk.bin", sizeof(SK_ROM)); - fill_pathname_join(SK_UPMEM, dir, "sk2chip.bin", sizeof(SK_UPMEM)); - fill_pathname_join(MD_BIOS, dir, "bios_MD.bin", sizeof(MD_BIOS)); - fill_pathname_join(GG_BIOS, dir, "bios.gg", sizeof(GG_BIOS)); - fill_pathname_join(MS_BIOS_EU, dir, "bios_E.sms", sizeof(MS_BIOS_EU)); - fill_pathname_join(MS_BIOS_US, dir, "bios_U.sms", sizeof(MS_BIOS_US)); - fill_pathname_join(MS_BIOS_JP, dir, "bios_J.sms", sizeof(MS_BIOS_JP)); - fill_pathname_join(CD_BIOS_EU, dir, "bios_CD_E.bin", sizeof(CD_BIOS_EU)); - fill_pathname_join(CD_BIOS_US, dir, "bios_CD_U.bin", sizeof(CD_BIOS_US)); - fill_pathname_join(CD_BIOS_JP, dir, "bios_CD_J.bin", sizeof(CD_BIOS_JP)); - - check_variables(true); - - if (log_cb) - { - log_cb(RETRO_LOG_DEBUG, "Game Genie ROM should be located at: %s\n", GG_ROM); - log_cb(RETRO_LOG_DEBUG, "Action Replay (Pro) ROM should be located at: %s\n", AR_ROM); - log_cb(RETRO_LOG_DEBUG, "Sonic & Knuckles (2 MB) ROM should be located at: %s\n", SK_ROM); - log_cb(RETRO_LOG_DEBUG, "Sonic & Knuckles UPMEM (256 KB) ROM should be located at: %s\n", SK_UPMEM); - log_cb(RETRO_LOG_DEBUG, "Mega Drive TMSS BOOTROM should be located at: %s\n", MD_BIOS); - log_cb(RETRO_LOG_DEBUG, "Game Gear TMSS BOOTROM should be located at: %s\n", GG_BIOS); - log_cb(RETRO_LOG_DEBUG, "Master System (PAL) BOOTROM should be located at: %s\n", MS_BIOS_EU); - log_cb(RETRO_LOG_DEBUG, "Master System (NTSC-U) BOOTROM should be located at: %s\n", MS_BIOS_US); - log_cb(RETRO_LOG_DEBUG, "Master System (NTSC-J) BOOTROM should be located at: %s\n", MS_BIOS_JP); - log_cb(RETRO_LOG_DEBUG, "Mega CD (PAL) BIOS should be located at: %s\n", CD_BIOS_EU); - log_cb(RETRO_LOG_DEBUG, "Sega CD (NTSC-U) BIOS should be located at: %s\n", CD_BIOS_US); - log_cb(RETRO_LOG_DEBUG, "Mega CD (NTSC-J) BIOS should be located at: %s\n", CD_BIOS_JP); - log_cb(RETRO_LOG_DEBUG, "Mega CD (PAL) BRAM is located at: %s\n", CD_BRAM_EU); - log_cb(RETRO_LOG_DEBUG, "Sega CD (NTSC-U) BRAM is located at: %s\n", CD_BRAM_US); - log_cb(RETRO_LOG_DEBUG, "Mega CD (NTSC-J) BRAM is located at: %s\n", CD_BRAM_JP); - log_cb(RETRO_LOG_DEBUG, "Sega/Mega CD RAM CART is located at: %s\n", CART_BRAM); - } - - /* Clear disk interface (already done in retro_unload_game but better be safe) */ - disk_count = 0; - disk_index = 0; - for (i=0; i 0) - { - /* remove end-of-line character */ - if (linebuf[len-1] == '\n') - { - linebuf[len-1] = 0; - len--; - } - - /* remove carriage-return character */ - if (len && (linebuf[len-1] == '\r')) - { - linebuf[len-1] = 0; - len--; - } - - /* append file path to disk image file name */ - disk_info[disk_count] = malloc(strlen(g_rom_dir) + len + 2); - if (disk_info[disk_count] != NULL) - { - /* add file to disk interface */ - sprintf(disk_info[disk_count], "%s%c%s", g_rom_dir, slash, linebuf); - disk_count++; - if (log_cb) - log_cb(RETRO_LOG_INFO, "Disk #%d added from M3U file list: %s\n", disk_count, disk_info[disk_count-1]); - } - } - } - } - } - - /* automatically try to load first disk if at least one file was added to disk interface from M3U file list */ - if (disk_count > 0) - { - if (!load_rom(disk_info[0])) - { - if (log_cb) - log_cb(RETRO_LOG_ERROR, "Could not load %s from M3U file list\n", disk_info[0]); - - /* clear initialized disk interface before returning an error */ - for (i=0; i 0) - { - if (!memcmp((char *)(boot_rom + 0x120),"GENESIS OS", 10)) - { - system_bios |= SYSTEM_MD; - } - -#ifdef LSB_FIRST - for (i=0; i<0x800; i+=2) - { - uint8 temp = boot_rom[i]; - boot_rom[i] = boot_rom[i+1]; - boot_rom[i+1] = temp; - } -#endif - } - } - - audio_init(SOUND_FREQUENCY, 0); - system_init(); - system_reset(); - is_running = false; - - if (system_hw == SYSTEM_MCD) - bram_load(); - - update_viewport(); - -#ifdef HAVE_OVERCLOCK - overclock_delay = OVERCLOCK_FRAME_DELAY; - update_overclock(); -#endif - - set_memory_maps(); - - init_frameskip(); - - return true; - -error: - if (sms_ntsc) - free(sms_ntsc); - sms_ntsc = NULL; - - if (md_ntsc) - free(md_ntsc); - md_ntsc = NULL; - - system_hw = 0; - - return false; -} - -bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info) -{ - (void)game_type; - (void)info; - (void)num_info; - return FALSE; -} - -void retro_unload_game(void) -{ - /* Clear disk interface */ - int i; - disk_count = 0; - disk_index = 0; - for (i=0; i=0; i--) - if (sram.sram[i] != 0xff) - return (i+1); - - /* return 0 if SRAM is not modified */ - return 0; - } - - case RETRO_MEMORY_SYSTEM_RAM: - { - /* 16-bit hardware */ - if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) - return 0x10000; /* 64KB internal RAM */ - - /* get 8-bit cartrige on-board RAM size */ - i = sms_cart_ram_size(); - - if (i > 0) - return i + 0x2000; /* on-board RAM size + max 8KB internal RAM */ - else if (system_hw == SYSTEM_SGII) - return 0x0800; /* 2KB internal RAM */ - else if (system_hw == SYSTEM_SG) - return 0x0400; /* 1KB internal RAM */ - else - return 0x2000; /* 8KB internal RAM */ - } - - default: - return 0; - } -} - -static void check_system_specs(void) -{ - unsigned level = 7; - environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level); -} - -void retro_init(void) -{ - struct retro_log_callback log; - unsigned level = 1; - uint64_t serialization_quirks = RETRO_SERIALIZATION_QUIRK_PLATFORM_DEPENDENT; - - 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; - - if (environ_cb(RETRO_ENVIRONMENT_GET_INPUT_BITMASKS, NULL)) - libretro_supports_bitmasks = true; - - check_system_specs(); - - environ_cb(RETRO_ENVIRONMENT_SET_SERIALIZATION_QUIRKS, &serialization_quirks); - environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_ctrl); - - 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; -} - -void retro_deinit(void) -{ - libretro_supports_option_categories = false; - libretro_supports_bitmasks = false; - - g_rom_data = NULL; - g_rom_size = 0; -} - -void retro_reset(void) -{ -#ifdef HAVE_OVERCLOCK - overclock_delay = OVERCLOCK_FRAME_DELAY; - update_overclock(); -#endif - gen_reset(0); -} - -extern int8 audio_hard_disable; - -extern void sound_update_fm_function_pointers(void); - -void retro_run(void) -{ - bool okay = false; - int result = -1; - int do_skip = 0; - bool updated = false; - int vwoffset = 0; - int bmdoffset = 0; - is_running = true; - -#ifdef HAVE_OVERCLOCK - /* update overclock delay */ - if (overclock_delay && --overclock_delay == 0) - update_overclock(); -#endif - - environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated); - if (updated) - { - check_variables(false); - if (restart_eq) - { - audio_set_equalizer(); - restart_eq = false; - } - } - - okay = environ_cb(RETRO_ENVIRONMENT_GET_AUDIO_VIDEO_ENABLE, &result); - if (okay) - { - bool audioEnabled = 0 != (result & 2); - bool videoEnabled = 0 != (result & 1); - bool hardDisableAudio = 0 != (result & 8); - do_skip = !videoEnabled; - if (audio_hard_disable != hardDisableAudio) - { - audio_hard_disable = hardDisableAudio; - sound_update_fm_function_pointers(); - } - } - else - { - do_skip = false; - audio_hard_disable = false; - } - - /* Check whether current frame should - * be skipped */ - if ((frameskip_type > 0) && - retro_audio_buff_active && - !do_skip) - { - switch (frameskip_type) - { - case 1: /* auto */ - do_skip = retro_audio_buff_underrun ? 1 : 0; - break; - case 2: /* manual */ - do_skip = (retro_audio_buff_occupancy < frameskip_threshold) ? 1 : 0; - break; - default: - do_skip = 0; - break; - } - - if (!do_skip || (frameskip_counter >= FRAMESKIP_MAX)) - { - do_skip = 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; - } - - if (system_hw == SYSTEM_MCD) - { - system_frame_scd(do_skip); - } - else if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) - { - system_frame_gen(do_skip); - } - else - { - system_frame_sms(do_skip); - } - - if (bitmap.viewport.changed & 9) - { - bool geometry_updated = update_viewport(); - bitmap.viewport.changed &= ~1; - if (bitmap.viewport.changed & 8) - { - struct retro_system_av_info info; - bitmap.viewport.changed &= ~8; - retro_get_system_av_info(&info); - environ_cb(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &info); - } - else if (geometry_updated) - { - struct retro_system_av_info info; - retro_get_system_av_info(&info); - environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &info.geometry); - } - } - - if (config.gun_cursor) - { - if (input.system[0] == SYSTEM_LIGHTPHASER) - { - draw_cursor(input.analog[0][0], input.analog[0][1], 0x001f); - } - else if (input.dev[4] == DEVICE_LIGHTGUN) - { - draw_cursor(input.analog[4][0], input.analog[4][1], 0x001f); - } - - if (input.system[1] == SYSTEM_LIGHTPHASER) - { - draw_cursor(input.analog[4][0], input.analog[4][1], 0xf800); - } - else if (input.dev[5] == DEVICE_LIGHTGUN) - { - draw_cursor(input.analog[5][0], input.analog[5][1], 0xf800); - } - } - - if ((config.left_border != 0) && (reg[0] & 0x20) && (bitmap.viewport.x == 0) && ((system_hw == SYSTEM_MARKIII) || (system_hw & SYSTEM_SMS) || (system_hw == SYSTEM_PBC))) - { - bmdoffset = (16 + (config.ntsc ? 24 : 0)); - if (config.left_border == 1) - vwoffset = (8 + (config.ntsc ? 12 : 0)); - else - vwoffset = (16 + (config.ntsc ? 24 : 0)); - } - - /* LED interface */ - if (led_state_cb) - retro_led_interface(); - - if (!do_skip) - { - video_cb(bitmap.data + bmdoffset, vwidth - vwoffset, vheight, 720 * 2); - } - else - { - video_cb(NULL, vwidth - vwoffset, vheight, 720 * 2); - } - - audio_cb(soundbuffer, audio_update(soundbuffer)); -} - -#undef CHUNKSIZE +/**************************************************************************** + * libretro.c + * + * Genesis Plus GX libretro port + * + * Copyright Eke-Eke (2007-2022) + * + * Copyright Daniel De Matteis (2012-2016) + * + * Redistribution and use of this code or any derivative works are permitted + * provided that the following conditions are met: + * + * - Redistributions may not be sold, nor may they be used in a commercial + * product or activity. + * + * - Redistributions that are modified from the original source must include the + * complete source code, including the source code for all components used by a + * binary built from the modified sources. However, as a special exception, the + * source code distributed need not include anything that is normally distributed + * (in either source or binary form) with the major components (compiler, kernel, + * and so on) of the operating system on which the executable runs, unless that + * component itself accompanies the executable. + * + * - Redistributions must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************************/ + +#ifndef _MSC_VER +#include +#endif +#include +#include +#include + +#ifdef _MSC_VER +#define snprintf _snprintf +#endif + +#ifdef _XBOX1 +#include +#endif + +#define RETRO_DEVICE_MDPAD_3B RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 0) +#define RETRO_DEVICE_MDPAD_6B RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 1) +#define RETRO_DEVICE_MSPAD_2B RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 2) +#define RETRO_DEVICE_MDPAD_3B_WAYPLAY RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 3) +#define RETRO_DEVICE_MDPAD_6B_WAYPLAY RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 4) +#define RETRO_DEVICE_MDPAD_3B_TEAMPLAYER RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 5) +#define RETRO_DEVICE_MDPAD_6B_TEAMPLAYER RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 6) +#define RETRO_DEVICE_MSPAD_2B_MASTERTAP RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 7) +#define RETRO_DEVICE_PADDLE RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_ANALOG, 0) +#define RETRO_DEVICE_SPORTSPAD RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_ANALOG, 1) +#define RETRO_DEVICE_XE_1AP RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_ANALOG, 2) +#define RETRO_DEVICE_PHASER RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_LIGHTGUN, 0) +#define RETRO_DEVICE_MENACER RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_LIGHTGUN, 1) +#define RETRO_DEVICE_JUSTIFIERS RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_LIGHTGUN, 2) +#define RETRO_DEVICE_GRAPHIC_BOARD RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_POINTER, 0) + +#include +#include +#include +#include + +#include "libretro_core_options.h" + +#include "shared.h" +#include "md_ntsc.h" +#include "sms_ntsc.h" +#include "osd.h" + +#define STATIC_ASSERT(name, test) typedef struct { int assert_[(test)?1:-1]; } assert_ ## name ## _ +#define M68K_MAX_CYCLES 1107 +#define Z80_MAX_CYCLES 345 +#define OVERCLOCK_FRAME_DELAY 100 + +#ifdef M68K_OVERCLOCK_SHIFT +#ifndef HAVE_OVERCLOCK +#define HAVE_OVERCLOCK +#endif +STATIC_ASSERT(m68k_overflow, + M68K_MAX_CYCLES <= UINT_MAX >> (M68K_OVERCLOCK_SHIFT + 1)); +#endif + +#ifdef Z80_OVERCLOCK_SHIFT +#ifndef HAVE_OVERCLOCK +#define HAVE_OVERCLOCK +#endif +STATIC_ASSERT(z80_overflow, + Z80_MAX_CYCLES <= UINT_MAX >> (Z80_OVERCLOCK_SHIFT + 1)); +#endif + +t_config config; + +sms_ntsc_t *sms_ntsc = NULL; +md_ntsc_t *md_ntsc = NULL; + +char GG_ROM[256]; +char AR_ROM[256]; +char SK_ROM[256]; +char SK_UPMEM[256]; +char MD_BIOS[256]; +char GG_BIOS[256]; +char MS_BIOS_EU[256]; +char MS_BIOS_JP[256]; +char MS_BIOS_US[256]; +char CD_BIOS_EU[256]; +char CD_BIOS_US[256]; +char CD_BIOS_JP[256]; +char CD_BRAM_JP[256]; +char CD_BRAM_US[256]; +char CD_BRAM_EU[256]; +char CART_BRAM[256]; + +static int vwidth; +static int vheight; +static double vaspect_ratio; + +static uint32_t brm_crc[2]; +static uint8_t brm_format[0x40] = +{ + 0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x5f,0x00,0x00,0x00,0x00,0x40, + 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, + 0x53,0x45,0x47,0x41,0x5f,0x43,0x44,0x5f,0x52,0x4f,0x4d,0x00,0x01,0x00,0x00,0x00, + 0x52,0x41,0x4d,0x5f,0x43,0x41,0x52,0x54,0x52,0x49,0x44,0x47,0x45,0x5f,0x5f,0x5f +}; +uint8_t cart_size; + +static bool is_running = 0; +static uint8_t temp[0x10000]; +static int16 soundbuffer[3068]; +static uint16_t bitmap_data_[720 * 576]; + +static bool restart_eq = false; + +static char g_rom_dir[256]; +static char g_rom_name[256]; +static const void *g_rom_data = NULL; +static size_t g_rom_size = 0; +static char *save_dir = NULL; + +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_cb; + +enum RetroLightgunInputModes{RetroLightgun, RetroPointer}; +static enum RetroLightgunInputModes retro_gun_mode = RetroLightgun; + +/* Cheat Support */ +#define MAX_CHEATS (150) + +typedef struct +{ + bool enable; + uint16_t data; + uint16_t old; + uint32_t address; + uint8_t *prev; +} CHEATENTRY; + +static int maxcheats = 0; +static int maxROMcheats = 0; +static int maxRAMcheats = 0; + +static CHEATENTRY cheatlist[MAX_CHEATS]; +static uint8_t cheatIndexes[MAX_CHEATS]; + +static char ggvalidchars[] = "ABCDEFGHJKLMNPRSTVWXYZ0123456789"; + +static char arvalidchars[] = "0123456789ABCDEF"; + +/* Some games appear to calibrate music playback speed for PAL/NTSC by + actually counting CPU cycles per frame during startup, resulting in + hilariously fast music. Delay overclocking for a while as a + workaround */ +#ifdef HAVE_OVERCLOCK +static uint32_t overclock_delay; +#endif + +static bool libretro_supports_option_categories = false; +static bool libretro_supports_bitmasks = false; + +#define SOUND_FREQUENCY 44100 + +/*EQ settings*/ +#define HAVE_EQ + +/* 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; + +#ifdef USE_PER_SOUND_CHANNELS_CONFIG +static bool show_advanced_av_settings = true; +#endif + +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; +} + +/* LED interface */ +static retro_set_led_state_t led_state_cb = NULL; +static unsigned int retro_led_state[2] = {0}; + +static void retro_led_interface(void) +{ + /* 0: Power + * 1: CD */ + + unsigned int led_state[2] = {0}; + unsigned int l = 0; + + led_state[0] = (zstate) ? 1 : 0; + led_state[1] = (scd.regs[0x06 >> 1].byte.h & 1) ? 1 : 0; + + for (l = 0; l < sizeof(led_state)/sizeof(led_state[0]); l++) + { + if (retro_led_state[l] != led_state[l]) + { + retro_led_state[l] = led_state[l]; + led_state_cb(l, led_state[l]); + } + } +} + +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 frames_per_sec; + float frame_time_msec; + + /* While system_clock and lines_per_frame will + * always be valid when this function is called, + * it is not guaranteed. Just add a fallback to + * prevent any possible divide-by-zero errors */ + if ((system_clock <= 0) || (lines_per_frame <= 0)) + frames_per_sec = 60.0f; + else + frames_per_sec = (float)system_clock / (float)lines_per_frame / (float)MCYCLES_PER_LINE; + + frame_time_msec = 1000.0f / frames_per_sec; + + /* 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; +} + +/************************************ + * Genesis Plus GX implementation + ************************************/ +#undef CHUNKSIZE +#define CHUNKSIZE (0x10000) + +void error(char * fmt, ...) +{ + char buffer[256]; + va_list ap; + va_start(ap, fmt); + vsprintf(buffer, fmt, ap); + if (log_cb) + log_cb(RETRO_LOG_ERROR, "%s\n", buffer); + va_end(ap); +} + +static void show_rom_size_error_msg(void) +{ + unsigned msg_interface_version = 0; + environ_cb(RETRO_ENVIRONMENT_GET_MESSAGE_INTERFACE_VERSION, + &msg_interface_version); + + if (msg_interface_version >= 1) + { + struct retro_message_ext msg = { + "ROM size exceeds maximum permitted value", + 3000, + 3, + RETRO_LOG_ERROR, + RETRO_MESSAGE_TARGET_ALL, + RETRO_MESSAGE_TYPE_NOTIFICATION, + -1 + }; + environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE_EXT, &msg); + } + else + { + struct retro_message msg = { + "ROM size exceeds maximum permitted value", + 180 + }; + environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE, &msg); + } +} + +int load_archive(char *filename, unsigned char *buffer, int maxsize, char *extension) +{ + int64_t left = 0; + int64_t size = 0; + RFILE *fd; + + /* Get filename extension */ + if (extension) + { + memcpy(extension, &filename[strlen(filename) - 3], 3); + extension[3] = 0; + } + + /* Check if this was called to load ROM file from the frontend (not BOOT ROM or Lock-On ROM files from the core) */ + if (maxsize >= 0x800000) + { + /* Check if loaded game is already in memory */ + if ((g_rom_data != NULL) && (g_rom_size > 0)) + { + size = g_rom_size; + if (size > maxsize) + { + /* ROM exceeds maximum allowed size + * - Notify user and return an error */ + show_rom_size_error_msg(); + return 0; + } + memcpy(buffer, g_rom_data, size); + return size; + } + } + + /* Open file */ + fd = filestream_open(filename, RETRO_VFS_FILE_ACCESS_READ, RETRO_VFS_FILE_ACCESS_HINT_NONE); + + if (!fd) + { + /* Master System & Game Gear BIOS are optional files */ + if (!strcmp(filename,MS_BIOS_US) || !strcmp(filename,MS_BIOS_EU) || !strcmp(filename,MS_BIOS_JP) || !strcmp(filename,GG_BIOS)) + { + return 0; + } + + /* Mega CD BIOS are required files */ + if (!strcmp(filename,CD_BIOS_US) || !strcmp(filename,CD_BIOS_EU) || !strcmp(filename,CD_BIOS_JP)) + { + if (log_cb) + log_cb(RETRO_LOG_ERROR, "Unable to open CD BIOS: %s.\n", filename); + return 0; + } + + if (log_cb) + log_cb(RETRO_LOG_ERROR, "Unable to open file.\n"); + return 0; + } + + /* Get file size */ + filestream_seek(fd, 0, SEEK_END); + size = filestream_tell(fd); + + /* size limit */ + if (size > MAXROMSIZE) + { + /* ROM exceeds maximum allowed size + * - Notify user and return an error */ + filestream_close(fd); + show_rom_size_error_msg(); + return 0; + } + else if (size > maxsize) + size = maxsize; + + if (log_cb) + log_cb(RETRO_LOG_INFO, "INFORMATION - Loading %d bytes ...\n", size); + + /* Read into buffer */ + left = size; + filestream_seek(fd, 0, SEEK_SET); + while (left > CHUNKSIZE) + { + filestream_read(fd, buffer, CHUNKSIZE); + buffer += CHUNKSIZE; + left -= CHUNKSIZE; + } + + /* Read remaining bytes */ + filestream_read(fd, buffer, left); + + /* Close file */ + filestream_close(fd); + + /* Return loaded ROM size */ + return size; +} + +static void RAMCheatUpdate(void); + +static void osd_input_update_internal_bitmasks(void) +{ + int i, player = 0; + unsigned int temp; + int16_t ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + + for (i = 0; i < MAX_INPUTS; i++) + { + temp = 0; + switch (input.dev[i]) + { + case DEVICE_PAD6B: + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_L)) + temp |= INPUT_X; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_X)) + temp |= INPUT_Y; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_R)) + temp |= INPUT_Z; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_SELECT)) + temp |= INPUT_MODE; + + case DEVICE_PAD3B: + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_Y)) + temp |= INPUT_A; + + case DEVICE_PAD2B: + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_B)) + temp |= INPUT_B; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_A)) + temp |= INPUT_C; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_START)) + temp |= INPUT_START; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_UP)) + temp |= INPUT_UP; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_DOWN)) + temp |= INPUT_DOWN; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_LEFT)) + temp |= INPUT_LEFT; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_RIGHT)) + temp |= INPUT_RIGHT; + + player++; + ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + break; + + case DEVICE_MOUSE: + input.analog[i][0] = input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_X); + if (config.invert_mouse) + input.analog[i][1] = input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y); + else + input.analog[i][1] = -input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y); + + if (input.analog[i][0] < -255) + input.analog[i][0] = -255; + else if (input.analog[i][0] > 255) + input.analog[i][0] = 255; + if (input.analog[i][1] < -255) + input.analog[i][1] = -255; + else if (input.analog[i][1] > 255) + input.analog[i][1] = 255; + + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) + temp |= INPUT_MOUSE_LEFT; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) + temp |= INPUT_MOUSE_RIGHT; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN)) + temp |= INPUT_MOUSE_CENTER; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) + temp |= INPUT_START; + + player++; + ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + break; + + case DEVICE_LIGHTGUN: + if ( retro_gun_mode == RetroPointer ) + { + int touch_count; + input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * bitmap.viewport.w) / 0xfffe; + input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * bitmap.viewport.h) / 0xfffe; + if (input_state_cb(player, RETRO_DEVICE_POINTER, 0, + RETRO_DEVICE_ID_POINTER_PRESSED)) + temp |= INPUT_A; + touch_count = input_state_cb(player, + RETRO_DEVICE_POINTER, 0, + RETRO_DEVICE_ID_POINTER_COUNT); + + if (touch_count == 2) + temp |= INPUT_B; + else if (touch_count == 3) + temp |= INPUT_START; + else if (touch_count == 4) + temp |= INPUT_C; + } + else + { + /* RetroLightgun is default */ + if ( input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_IS_OFFSCREEN) ) + { + input.analog[i][0] = -1000; + input.analog[i][1] = -1000; + } + else + { + input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_SCREEN_X) + 0x7fff) * bitmap.viewport.w) / 0xfffe; + input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_SCREEN_Y) + 0x7fff) * bitmap.viewport.h) / 0xfffe; + } + + if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_TRIGGER)) + temp |= INPUT_A; + if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_AUX_A)) + temp |= INPUT_B; + if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_AUX_B)) + temp |= INPUT_C; + if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_START)) + temp |= INPUT_START; + } + + player++; + ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + break; + + case DEVICE_PADDLE: + input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; + + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_B)) + temp |= INPUT_BUTTON1; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_START)) + temp |= INPUT_START; + + player++; + ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + break; + + case DEVICE_SPORTSPAD: + input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; + input.analog[i][1] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_Y) + 0x8000) >> 8; + + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_B)) + temp |= INPUT_BUTTON1; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_A)) + temp |= INPUT_BUTTON2; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_START)) + temp |= INPUT_START; + + player++; + ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + break; + + case DEVICE_PICO: + input.analog[i][0] = 0x03c + ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * (0x17c-0x03c)) / 0xfffe; + input.analog[i][1] = 0x1fc + ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * (0x2f7-0x1fc)) / 0xfffe; + + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) + temp |= INPUT_PICO_PEN; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) + temp |= INPUT_PICO_RED; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELUP)) + pico_current = (pico_current - 1) & 7; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN)) + pico_current = (pico_current + 1) & 7; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_UP)) + temp |= INPUT_UP; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_DOWN)) + temp |= INPUT_DOWN; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_LEFT)) + temp |= INPUT_LEFT; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_RIGHT)) + temp |= INPUT_RIGHT; + + player++; + ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + break; + + case DEVICE_TEREBI: + input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * 250) / 0xfffe; + input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * 250) / 0xfffe; + + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) + temp |= INPUT_BUTTON1; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) + temp |= INPUT_START; + + player++; + ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + break; + + case DEVICE_GRAPHIC_BOARD: + input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * 255) / 0xfffe; + input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * 255) / 0xfffe; + + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) + temp |= INPUT_GRAPHIC_PEN; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) + temp |= INPUT_GRAPHIC_DO; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) + temp |= INPUT_GRAPHIC_MENU; + + player++; + ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + break; + + case DEVICE_XE_1AP: + { + int rx = input.analog[i][0] = input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X); + int ry = input.analog[i][1] = input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y); + if (abs(rx) > abs(ry)) + input.analog[i+1][0] = (rx + 0x8000) >> 8; + else + input.analog[i+1][0] = (0x7fff - ry) >> 8; + input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; + input.analog[i][1] = (input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y) + 0x8000) >> 8; + + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_R)) + temp |= INPUT_XE_A; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_R2)) + temp |= INPUT_XE_B; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_L)) + temp |= INPUT_XE_C; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_L2)) + temp |= INPUT_XE_D; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_Y)) + temp |= INPUT_XE_E1; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_B)) + temp |= INPUT_XE_E2; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_SELECT)) + temp |= INPUT_XE_SELECT; + if (ret & (1 << RETRO_DEVICE_ID_JOYPAD_START)) + temp |= INPUT_XE_START; + + player++; + ret = input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK); + break; + } + + default: + break; + } + + input.pad[i] = temp; + } +} + +static void osd_input_update_internal(void) +{ + int i, player = 0; + unsigned int temp; + + for (i = 0; i < MAX_INPUTS; i++) + { + temp = 0; + switch (input.dev[i]) + { + case DEVICE_PAD6B: + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L)) + temp |= INPUT_X; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X)) + temp |= INPUT_Y; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R)) + temp |= INPUT_Z; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT)) + temp |= INPUT_MODE; + + case DEVICE_PAD3B: + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y)) + temp |= INPUT_A; + + case DEVICE_PAD2B: + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) + temp |= INPUT_B; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A)) + temp |= INPUT_C; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) + temp |= INPUT_START; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)) + temp |= INPUT_UP; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)) + temp |= INPUT_DOWN; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)) + temp |= INPUT_LEFT; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)) + temp |= INPUT_RIGHT; + + player++; + break; + + case DEVICE_MOUSE: + input.analog[i][0] = input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_X); + if (config.invert_mouse) + input.analog[i][1] = input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y); + else + input.analog[i][1] = -input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y); + + if (input.analog[i][0] < -255) + input.analog[i][0] = -255; + else if (input.analog[i][0] > 255) + input.analog[i][0] = 255; + if (input.analog[i][1] < -255) + input.analog[i][1] = -255; + else if (input.analog[i][1] > 255) + input.analog[i][1] = 255; + + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) + temp |= INPUT_MOUSE_LEFT; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) + temp |= INPUT_MOUSE_RIGHT; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN)) + temp |= INPUT_MOUSE_CENTER; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) + temp |= INPUT_START; + + player++; + break; + + case DEVICE_LIGHTGUN: + if ( retro_gun_mode == RetroPointer ) + { + input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * bitmap.viewport.w) / 0xfffe; + input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * bitmap.viewport.h) / 0xfffe; + if (input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_PRESSED)) + temp |= INPUT_A; + } + else + { + /* RetroLightgun is default */ + if ( input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_IS_OFFSCREEN) ) + { + input.analog[i][0] = -1000; + input.analog[i][1] = -1000; + } + else + { + input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_SCREEN_X) + 0x7fff) * bitmap.viewport.w) / 0xfffe; + input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_SCREEN_Y) + 0x7fff) * bitmap.viewport.h) / 0xfffe; + } + + if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_TRIGGER)) + temp |= INPUT_A; + if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_AUX_A)) + temp |= INPUT_B; + if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_AUX_B)) + temp |= INPUT_C; + if (input_state_cb(player, RETRO_DEVICE_LIGHTGUN, 0, RETRO_DEVICE_ID_LIGHTGUN_START)) + temp |= INPUT_START; + } + + player++; + break; + + case DEVICE_PADDLE: + input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; + + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) + temp |= INPUT_BUTTON1; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) + temp |= INPUT_START; + + player++; + break; + + case DEVICE_SPORTSPAD: + input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; + input.analog[i][1] = (input_state_cb(player, RETRO_DEVICE_ANALOG, 0, RETRO_DEVICE_ID_ANALOG_Y) + 0x8000) >> 8; + + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) + temp |= INPUT_BUTTON1; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A)) + temp |= INPUT_BUTTON2; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) + temp |= INPUT_START; + + player++; + break; + + case DEVICE_PICO: + input.analog[i][0] = 0x03c + ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * (0x17c-0x03c)) / 0xfffe; + input.analog[i][1] = 0x1fc + ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * (0x2f7-0x1fc)) / 0xfffe; + + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) + temp |= INPUT_PICO_PEN; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) + temp |= INPUT_PICO_RED; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELUP)) + pico_current = (pico_current - 1) & 7; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN)) + pico_current = (pico_current + 1) & 7; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)) + temp |= INPUT_UP; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)) + temp |= INPUT_DOWN; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)) + temp |= INPUT_LEFT; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)) + temp |= INPUT_RIGHT; + + player++; + break; + + case DEVICE_TEREBI: + input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * 250) / 0xfffe; + input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * 250) / 0xfffe; + + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) + temp |= INPUT_BUTTON1; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) + temp |= INPUT_START; + + player++; + break; + + case DEVICE_GRAPHIC_BOARD: + input.analog[i][0] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X) + 0x7fff) * 255) / 0xfffe; + input.analog[i][1] = ((input_state_cb(player, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y) + 0x7fff) * 255) / 0xfffe; + + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT)) + temp |= INPUT_GRAPHIC_PEN; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE)) + temp |= INPUT_GRAPHIC_DO; + if (input_state_cb(player, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT)) + temp |= INPUT_GRAPHIC_MENU; + + player++; + break; + + case DEVICE_XE_1AP: + { + int rx = input.analog[i][0] = input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X); + int ry = input.analog[i][1] = input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y); + if (abs(rx) > abs(ry)) + input.analog[i+1][0] = (rx + 0x8000) >> 8; + else + input.analog[i+1][0] = (0x7fff - ry) >> 8; + input.analog[i][0] = (input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X) + 0x8000) >> 8; + input.analog[i][1] = (input_state_cb(player, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y) + 0x8000) >> 8; + + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R)) + temp |= INPUT_XE_A; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2)) + temp |= INPUT_XE_B; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L)) + temp |= INPUT_XE_C; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2)) + temp |= INPUT_XE_D; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y)) + temp |= INPUT_XE_E1; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) + temp |= INPUT_XE_E2; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT)) + temp |= INPUT_XE_SELECT; + if (input_state_cb(player, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) + temp |= INPUT_XE_START; + + player++; + break; + } + + default: + break; + } + + input.pad[i] = temp; + } +} + +void osd_input_update(void) +{ + input_poll_cb(); + + /* Update RAM patches */ + RAMCheatUpdate(); + + if (libretro_supports_bitmasks) + osd_input_update_internal_bitmasks(); + else + osd_input_update_internal(); +} + +static void draw_cursor(int16_t x, int16_t y, uint16_t color) +{ + int i; + + /* crosshair center position */ + uint16_t *ptr = (uint16_t *)bitmap.data + ((bitmap.viewport.y + y) * bitmap.width) + x + bitmap.viewport.x; + + /* default crosshair dimension */ + int x_start = x - 3; + int x_end = x + 3; + int y_start = y - 3; + int y_end = y + 3; + + /* off-screen? */ + if ( x < 0 && y < 0 ) + return; + + /* framebuffer limits */ + if (x_start < -bitmap.viewport.x) x_start = -bitmap.viewport.x; + if (x_end >= (bitmap.viewport.w + bitmap.viewport.x)) x_end = bitmap.viewport.w + bitmap.viewport.x - 1; + if (y_start < -bitmap.viewport.y) y_start = -bitmap.viewport.y; + if (y_end >= (bitmap.viewport.h + bitmap.viewport.y)) y_end = bitmap.viewport.h + bitmap.viewport.y - 1; + + /* draw crosshair */ + for (i = (x_start - x); i <= (x_end - x); i++) + ptr[i] = (i & 1) ? color : 0xffff; + for (i = (y_start - y); i <= (y_end - y); i++) + ptr[i * bitmap.width] = (i & 1) ? color : 0xffff; +} + +static void init_bitmap(void) +{ + memset(&bitmap, 0, sizeof(bitmap)); + bitmap.width = 720; + bitmap.height = 576; + bitmap.pitch = 720 * 2; + bitmap.data = (uint8_t *)bitmap_data_; +} + +static void config_default(void) +{ + int i; + + /* sound options */ + config.psg_preamp = 150; + config.fm_preamp = 100; + config.cdda_volume = 100; + config.pcm_volume = 100; + config.hq_fm = 1; /* high-quality FM resampling (slower) */ + config.hq_psg = 1; /* high-quality PSG resampling (slower) */ + config.filter = 1; /* no filter */ + config.lp_range = 0x9999; /* 0.6 in 0.16 fixed point */ + config.low_freq = 880; + config.high_freq = 5000; + config.lg = 100; + config.mg = 100; + config.hg = 100; + config.ym2612 = YM2612_DISCRETE; + config.ym2413 = 2; /* AUTO */ + config.mono = 0; /* STEREO output */ +#ifdef USE_PER_SOUND_CHANNELS_CONFIG + for (i = 0; i < 4; i++) config.psg_ch_volumes[i] = 100; /* individual channel volumes */ + for (i = 0; i < 6; i++) config.md_ch_volumes[i] = 100; /* individual channel volumes */ + for (i = 0; i < 9; i++) config.sms_fm_ch_volumes[i] = 100; /* individual channel volumes */ +#endif +#ifdef HAVE_YM3438_CORE + config.ym3438 = 0; +#endif +#ifdef HAVE_OPLL_CORE + config.opll = 0; +#endif + + /* system options */ + config.system = 0; /* AUTO */ + config.region_detect = 0; /* AUTO */ + config.vdp_mode = 0; /* AUTO */ + config.master_clock = 0; /* AUTO */ + config.force_dtack = 0; + config.addr_error = 1; + config.bios = 0; + config.lock_on = 0; + config.add_on = HW_ADDON_AUTO; + config.lcd = 0; /* 0.8 fixed point */ +#ifdef HAVE_OVERCLOCK + config.overclock = 100; +#endif + config.no_sprite_limit = 0; + config.enhanced_vscroll = 0; + config.enhanced_vscroll_limit = 8; + + /* video options */ + config.overscan = 0; + config.aspect_ratio = 0; + config.gg_extra = 0; + config.ntsc = 0; + config.lcd = 0; + config.render = 0; + config.left_border = 0; + + /* input options */ + input.system[0] = SYSTEM_GAMEPAD; + input.system[1] = SYSTEM_GAMEPAD; + for (i=0; i CHUNKSIZE) + { + filestream_read(fp, scd.cartridge.area + done, CHUNKSIZE); + done += CHUNKSIZE; + filesize -= CHUNKSIZE; + } + + /* Read remaining bytes */ + if (filesize) + { + filestream_read(fp, scd.cartridge.area + done, filesize); + } + + /* close file */ + filestream_close(fp); + + /* update CRC */ + brm_crc[1] = crc32(0, scd.cartridge.area, scd.cartridge.mask + 1); + } + + /* check if cartridge backup RAM is correctly formatted */ + if (memcmp(scd.cartridge.area + scd.cartridge.mask + 1 - 0x20, brm_format + 0x20, 0x20)) + { + /* clear cartridge backup RAM */ + memset(scd.cartridge.area, 0x00, scd.cartridge.mask + 1); + + /* Cartridge Backup RAM size fields */ + brm_format[0x10] = brm_format[0x12] = brm_format[0x14] = brm_format[0x16] = (((scd.cartridge.mask + 1) / 64) - 3) >> 8; + brm_format[0x11] = brm_format[0x13] = brm_format[0x15] = brm_format[0x17] = (((scd.cartridge.mask + 1) / 64) - 3) & 0xff; + + /* format cartridge backup RAM */ + memcpy(scd.cartridge.area + scd.cartridge.mask + 1 - 0x40, brm_format, 0x40); + } + } +} + +static void bram_save(void) +{ + RFILE *fp; + + /* verify that internal backup RAM has been modified */ + if (crc32(0, scd.bram, 0x2000) != brm_crc[0]) + { + /* check if it is correctly formatted before saving */ + if (!memcmp(scd.bram + 0x2000 - 0x20, brm_format + 0x20, 0x20)) + { + switch (region_code) + { + case REGION_JAPAN_NTSC: + fp = filestream_open(CD_BRAM_JP, RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE); + break; + case REGION_EUROPE: + fp = filestream_open(CD_BRAM_EU, RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE); + break; + case REGION_USA: + fp = filestream_open(CD_BRAM_US, RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE); + break; + default: + return; + } + + if (fp != NULL) + { + filestream_write(fp, scd.bram, 0x2000); + filestream_close(fp); + + /* update CRC */ + brm_crc[0] = crc32(0, scd.bram, 0x2000); + } + } + } + + /* verify that cartridge backup RAM has been modified */ + if (scd.cartridge.id && (crc32(0, scd.cartridge.area, scd.cartridge.mask + 1) != brm_crc[1])) + { + /* check if it is correctly formatted before saving */ + if (!memcmp(scd.cartridge.area + scd.cartridge.mask + 1 - 0x20, brm_format + 0x20, 0x20)) + { + fp = filestream_open(CART_BRAM, RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE); + if (fp != NULL) + { + int filesize = scd.cartridge.mask + 1; + int done = 0; + + /* Write to file (2k blocks) */ + while (filesize > CHUNKSIZE) + { + filestream_write(fp, scd.cartridge.area + done, CHUNKSIZE); + done += CHUNKSIZE; + filesize -= CHUNKSIZE; + } + + /* Write remaining bytes */ + if (filesize) + { + filestream_write(fp, scd.cartridge.area + done, filesize); + } + + /* Close file */ + filestream_close(fp); + + /* update CRC */ + brm_crc[1] = crc32(0, scd.cartridge.area, scd.cartridge.mask + 1); + } + } + } +} + +static void extract_name(char *buf, const char *path, size_t size) +{ + char *base = strrchr(path, '/'); + if (!base) + base = strrchr(path, '\\'); + + if (base) + { + strlcpy(buf, base, size); + base = strrchr(buf, '.'); + if (base) + *base = '\0'; + } + else + buf[0] = '\0'; +} + +static void extract_directory(char *buf, const char *path, size_t size) +{ + char *base; + strncpy(buf, path, size - 1); + buf[size - 1] = '\0'; + + if (!(base = strrchr(buf, '/'))) + base = strrchr(buf, '\\'); + + if (base) + *base = '\0'; + else + buf[0] = '\0'; +} + +static double calculate_display_aspect_ratio(void) +{ + double videosamplerate, dotrate; + bool is_h40 = false; + if (config.aspect_ratio == 0) + { + if ((system_hw == SYSTEM_GG || system_hw == SYSTEM_GGMS) && config.overscan == 0 && config.gg_extra == 0) + return (6.0 / 5.0) * ((double)vwidth / (double)vheight); + } + + is_h40 = bitmap.viewport.w == 320; /* Could be read directly from the register as well. */ + dotrate = system_clock / (is_h40 ? 8.0 : 10.0); + + if (config.aspect_ratio == 1) /* Force NTSC PAR */ + videosamplerate = 135000000.0 / 11.0; + else if (config.aspect_ratio == 2) /* Force PAL PAR */ + videosamplerate = 14750000.0; + else if (config.aspect_ratio == 3) /* Force 4:3 */ + return (4.0 / 3.0); + else if (config.aspect_ratio == 4) /* Uncorrected */ + return (0.0); + else + videosamplerate = vdp_pal ? 14750000.0 : 135000000.0 / 11.0; + + return (videosamplerate / dotrate) * ((double)vwidth / ((double)vheight * 2.0)); +} + +static bool update_viewport(void) +{ + int ow = vwidth; + int oh = vheight; + double oar = vaspect_ratio; + + vwidth = bitmap.viewport.w + (bitmap.viewport.x * 2); + vheight = bitmap.viewport.h + (bitmap.viewport.y * 2); + vaspect_ratio = calculate_display_aspect_ratio(); + + if (config.ntsc) + { + if (reg[12] & 1) + vwidth = MD_NTSC_OUT_WIDTH(vwidth); + else + vwidth = SMS_NTSC_OUT_WIDTH(vwidth); + } + + if (config.render && interlaced) + { + vheight = vheight * 2; + } + return ((ow != vwidth) || (oh != vheight) || (oar != vaspect_ratio)); +} + +#ifdef HAVE_OVERCLOCK +static void update_overclock(void) +{ +#ifdef M68K_OVERCLOCK_SHIFT + m68k.cycle_ratio = 1 << M68K_OVERCLOCK_SHIFT; +#endif +#ifdef Z80_OVERCLOCK_SHIFT + z80_cycle_ratio = 1 << Z80_OVERCLOCK_SHIFT; +#endif + if (overclock_delay == 0) + { + /* Cycle ratios multiply per-instruction cycle counts, so use + reciprocals */ +#ifdef M68K_OVERCLOCK_SHIFT + if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) + m68k.cycle_ratio = (100 << M68K_OVERCLOCK_SHIFT) / config.overclock; +#endif +#ifdef Z80_OVERCLOCK_SHIFT + if ((system_hw & SYSTEM_PBC) != SYSTEM_MD) + z80_cycle_ratio = (100 << Z80_OVERCLOCK_SHIFT) / config.overclock; +#endif + } +} +#endif + +static void check_variables(bool first_run) +{ + unsigned orig_value; + struct retro_system_av_info info; +#ifdef USE_PER_SOUND_CHANNELS_CONFIG + unsigned c; + char md_fm_channel_volume_base_str[] = "genesis_plus_gx_md_channel_0_volume"; + char sms_fm_channel_volume_base_str[] = "genesis_plus_gx_sms_fm_channel_0_volume"; + char psg_channel_volume_base_str[] = "genesis_plus_gx_psg_channel_0_volume"; +#endif + bool update_viewports = false; + bool reinit = false; + bool update_frameskip = false; + struct retro_variable var = {0}; + + if (first_run) + { + var.key = "genesis_plus_gx_system_bram"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "per bios")) + { + fill_pathname_join(CD_BRAM_EU, save_dir, "scd_E.brm", sizeof(CD_BRAM_EU)); + fill_pathname_join(CD_BRAM_US, save_dir, "scd_U.brm", sizeof(CD_BRAM_US)); + fill_pathname_join(CD_BRAM_JP, save_dir, "scd_J.brm", sizeof(CD_BRAM_JP)); + } + else + { + char newpath[4096]; + fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); + strlcat(newpath, ".brm", sizeof(newpath)); + strlcpy(CD_BRAM_EU, newpath, sizeof(CD_BRAM_EU)); + strlcpy(CD_BRAM_US, newpath, sizeof(CD_BRAM_US)); + strlcpy(CD_BRAM_JP, newpath, sizeof(CD_BRAM_JP)); + } + } + } + + if (first_run) + { + var.key = "genesis_plus_gx_cart_size"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (var.value && !strcmp(var.value, "disabled")) + cart_size = 0xff; + else if (var.value && !strcmp(var.value, "128k")) + cart_size = 1; + else if (var.value && !strcmp(var.value, "256k")) + cart_size = 2; + else if (var.value && !strcmp(var.value, "512k")) + cart_size = 3; + else if (var.value && !strcmp(var.value, "1meg")) + cart_size = 4; + else if (var.value && !strcmp(var.value, "2meg")) + cart_size = 5; + else if (var.value && !strcmp(var.value, "4meg")) + cart_size = 6; + } + } + + if (first_run) + { + var.key = "genesis_plus_gx_cart_bram"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 1) + { + fill_pathname_join(CART_BRAM, save_dir, "128Kbit_cart.brm", sizeof(CART_BRAM)); + } + else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 2) + { + fill_pathname_join(CART_BRAM, save_dir, "256Kbit_cart.brm", sizeof(CART_BRAM)); + } + else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 3) + { + fill_pathname_join(CART_BRAM, save_dir, "512Kbit_cart.brm", sizeof(CART_BRAM)); + } + else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 4) + { + fill_pathname_join(CART_BRAM, save_dir, "1Mbit_cart.brm", sizeof(CART_BRAM)); + } + else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 5) + { + fill_pathname_join(CART_BRAM, save_dir, "2Mbit_cart.brm", sizeof(CART_BRAM)); + } + else if ((!var.value || !strcmp(var.value, "per cart")) && cart_size == 6) + { + fill_pathname_join(CART_BRAM, save_dir, "4Mbit_cart.brm", sizeof(CART_BRAM)); + } + else + { + if (cart_size == 1) + { + char newpath[4096]; + fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); + strlcat(newpath, "_128Kbit_cart.brm", sizeof(newpath)); + strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); + } + else if (cart_size == 2) + { + char newpath[4096]; + fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); + strlcat(newpath, "_256Kbit_cart.brm", sizeof(newpath)); + strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); + } + else if (cart_size == 3) + { + char newpath[4096]; + fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); + strlcat(newpath, "_512Kbit_cart.brm", sizeof(newpath)); + strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); + } + else if (cart_size == 4) + { + char newpath[4096]; + fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); + strlcat(newpath, "_1Mbit_cart.brm", sizeof(newpath)); + strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); + } + else if (cart_size == 5) + { + char newpath[4096]; + fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); + strlcat(newpath, "_2Mbit_cart.brm", sizeof(newpath)); + strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); + } + else if (cart_size == 6) + { + char newpath[4096]; + fill_pathname_join(newpath, save_dir, g_rom_name, sizeof(newpath)); + strlcat(newpath, "_4Mbit_cart.brm", sizeof(newpath)); + strlcpy(CART_BRAM, newpath, sizeof(CART_BRAM)); + } + } + } + } + + var.key = "genesis_plus_gx_system_hw"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.system; + if (var.value && !strcmp(var.value, "sg-1000")) + config.system = SYSTEM_SG; + else if (var.value && !strcmp(var.value, "sg-1000 II")) + config.system = SYSTEM_SGII; + else if (var.value && !strcmp(var.value, "sg-1000 II + ram ext.")) + config.system = SYSTEM_SGII_RAM_EXT; + else if (var.value && !strcmp(var.value, "mark-III")) + config.system = SYSTEM_MARKIII; + else if (var.value && !strcmp(var.value, "master system")) + config.system = SYSTEM_SMS; + else if (var.value && !strcmp(var.value, "master system II")) + config.system = SYSTEM_SMS2; + else if (var.value && !strcmp(var.value, "game gear")) + config.system = SYSTEM_GG; + else if (var.value && !strcmp(var.value, "mega drive / genesis")) + config.system = SYSTEM_MD; + else + config.system = 0; + + if (orig_value != config.system) + { + if (system_hw) + { + switch (config.system) + { + case 0: + system_hw = romtype; /* AUTO */ + break; + + case SYSTEM_MD: + system_hw = (romtype & SYSTEM_MD) ? romtype : SYSTEM_PBC; + break; + + case SYSTEM_GG: + system_hw = (romtype == SYSTEM_GG) ? SYSTEM_GG : SYSTEM_GGMS; + break; + + default: + system_hw = config.system; + break; + } + + reinit = true; + } + } + } + + var.key = "genesis_plus_gx_bios"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.bios; + if (var.value && !strcmp(var.value, "enabled")) + config.bios = 3; + else + config.bios = 0; + + if (orig_value != config.bios) + { + if (system_hw) + { + reinit = true; + } + } + } + + var.key = "genesis_plus_gx_region_detect"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.region_detect; + if (var.value && !strcmp(var.value, "ntsc-u")) + config.region_detect = 1; + else if (var.value && !strcmp(var.value, "pal")) + config.region_detect = 2; + else if (var.value && !strcmp(var.value, "ntsc-j")) + config.region_detect = 3; + else + config.region_detect = 0; + + if (orig_value != config.region_detect) + { + if (system_hw) + { + get_region(NULL); + + if ((system_hw == SYSTEM_MCD) || ((system_hw & SYSTEM_SMS) && config.bios)) + { + /* system with region BIOS should be reinitialized */ + reinit = true; + } + else + { + static const uint16 vc_table[4][2] = + { + /* NTSC, PAL */ + {0xDA , 0xF2}, /* Mode 4 (192 lines) */ + {0xEA , 0x102}, /* Mode 5 (224 lines) */ + {0xDA , 0xF2}, /* Mode 4 (192 lines) */ + {0x106, 0x10A} /* Mode 5 (240 lines) */ + }; + + /* framerate might have changed, reinitialize audio timings */ + audio_set_rate(44100, 0); + + /* reinitialize I/O region register */ + if (system_hw == SYSTEM_MD) + { + io_reg[0x00] = 0x20 | region_code | (config.bios & 1); + } + else if (system_hw == SYSTEM_MCD) + { + io_reg[0x00] = region_code | (config.bios & 1); + } + else + { + io_reg[0x00] = 0x80 | (region_code >> 1); + } + + /* reinitialize VDP timings */ + lines_per_frame = vdp_pal ? 313 : 262; + + /* reinitialize NTSC/PAL mode in VDP status */ + if (system_hw & SYSTEM_MD) + { + status = (status & ~1) | vdp_pal; + } + + /* reinitialize VC max value */ + switch (bitmap.viewport.h) + { + case 192: + vc_max = vc_table[0][vdp_pal]; + break; + case 224: + vc_max = vc_table[1][vdp_pal]; + break; + case 240: + vc_max = vc_table[3][vdp_pal]; + break; + } + + update_viewports = true; + } + + update_frameskip = true; + } + } + } + + var.key = "genesis_plus_gx_vdp_mode"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.vdp_mode; + if (var.value && !strcmp(var.value, "60hz")) + config.vdp_mode = 1; + else if (var.value && !strcmp(var.value, "50hz")) + config.vdp_mode = 2; + else + config.vdp_mode = 0; + + if (orig_value != config.vdp_mode) + { + if (system_hw) + { + get_region(NULL); + + if ((system_hw == SYSTEM_MCD) || ((system_hw & SYSTEM_SMS) && config.bios)) + { + /* system with region BIOS should be reinitialized */ + reinit = true; + } + else + { + static const uint16 vc_table[4][2] = + { + /* NTSC, PAL */ + {0xDA , 0xF2}, /* Mode 4 (192 lines) */ + {0xEA , 0x102}, /* Mode 5 (224 lines) */ + {0xDA , 0xF2}, /* Mode 4 (192 lines) */ + {0x106, 0x10A} /* Mode 5 (240 lines) */ + }; + + /* framerate might have changed, reinitialize audio timings */ + audio_set_rate(44100, 0); + + /* reinitialize I/O region register */ + if (system_hw == SYSTEM_MD) + { + io_reg[0x00] = 0x20 | region_code | (config.bios & 1); + } + else if (system_hw == SYSTEM_MCD) + { + io_reg[0x00] = region_code | (config.bios & 1); + } + else + { + io_reg[0x00] = 0x80 | (region_code >> 1); + } + + /* reinitialize VDP timings */ + lines_per_frame = vdp_pal ? 313 : 262; + + /* reinitialize NTSC/PAL mode in VDP status */ + if (system_hw & SYSTEM_MD) + { + status = (status & ~1) | vdp_pal; + } + + /* reinitialize VC max value */ + switch (bitmap.viewport.h) + { + case 192: + vc_max = vc_table[0][vdp_pal]; + break; + case 224: + vc_max = vc_table[1][vdp_pal]; + break; + case 240: + vc_max = vc_table[3][vdp_pal]; + break; + } + + update_viewports = true; + } + + update_frameskip = true; + } + } + } + + var.key = "genesis_plus_gx_force_dtack"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "enabled")) + config.force_dtack = 1; + else + config.force_dtack = 0; + } + + var.key = "genesis_plus_gx_addr_error"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "enabled")) + m68k.aerr_enabled = config.addr_error = 1; + else + m68k.aerr_enabled = config.addr_error = 0; + } + + var.key = "genesis_plus_gx_cd_latency"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "enabled")) + config.cd_latency = 1; + else + config.cd_latency = 0; + } + + var.key = "genesis_plus_gx_add_on"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.add_on; + if (var.value && !strcmp(var.value, "sega/mega cd")) + config.add_on = HW_ADDON_MEGACD; + else if (var.value && !strcmp(var.value, "megasd")) + config.add_on = HW_ADDON_MEGASD; + else if (var.value && !strcmp(var.value, "none")) + config.add_on = HW_ADDON_NONE; + else + config.add_on = HW_ADDON_AUTO; + /* note: game needs to be reloaded for change to take effect */ + } + + var.key = "genesis_plus_gx_lock_on"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.lock_on; + if (var.value && !strcmp(var.value, "game genie")) + config.lock_on = TYPE_GG; + else if (var.value && !strcmp(var.value, "action replay (pro)")) + config.lock_on = TYPE_AR; + else if (var.value && !strcmp(var.value, "sonic & knuckles")) + config.lock_on = TYPE_SK; + else + config.lock_on = 0; + + if (orig_value != config.lock_on) + { + if (system_hw == SYSTEM_MD) + reinit = true; + } + } + + var.key = "genesis_plus_gx_ym2413"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.ym2413; + if (var.value && !strcmp(var.value, "enabled")) + config.ym2413 = 1; + else if (var.value && !strcmp(var.value, "disabled")) + config.ym2413 = 0; + else + config.ym2413 = 2; + + if (orig_value != config.ym2413) + { + if (system_hw && (config.ym2413 & 2) && ((system_hw & SYSTEM_PBC) != SYSTEM_MD)) + { + memcpy(temp, sram.sram, sizeof(temp)); + sms_cart_init(); + memcpy(sram.sram, temp, sizeof(temp)); + } + } + } + +#ifdef HAVE_OPLL_CORE + var.key = "genesis_plus_gx_ym2413_core"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.opll; + if (var.value && !strcmp(var.value, "nuked")) + { + config.opll = 1; + } + else + { + config.opll = 0; + } + + if (((orig_value == 0) && (config.opll > 0)) || ((orig_value > 0) && (config.opll == 0))) + { + sound_init(); + sound_reset(); + } + } +#endif + + var.key = "genesis_plus_gx_sound_output"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (var.value && !strcmp(var.value, "mono")) + config.mono = 1; + else if (!var.value || !strcmp(var.value, "stereo")) + config.mono = 0; + } + + + var.key = "genesis_plus_gx_psg_preamp"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + config.psg_preamp = (!var.value) ? 150: atoi(var.value); + if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) + { + psg_config(0, config.psg_preamp, 0xff); + } + else + { + psg_config(0, config.psg_preamp, io_reg[6]); + } + } + + var.key = "genesis_plus_gx_fm_preamp"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + config.fm_preamp = (!var.value) ? 100: atoi(var.value); + } + + var.key = "genesis_plus_gx_cdda_volume"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + config.cdda_volume = (!var.value) ? 100: atoi(var.value); + } + + var.key = "genesis_plus_gx_pcm_volume"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + config.pcm_volume = (!var.value) ? 100: atoi(var.value); + } + + var.key = "genesis_plus_gx_audio_filter"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (var.value && !strcmp(var.value, "low-pass")) + config.filter = 1; + +#ifdef HAVE_EQ + else if (var.value && !strcmp(var.value, "EQ")) + config.filter = 2; +#endif + + else + config.filter = 0; + } + + var.key = "genesis_plus_gx_lowpass_range"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + config.lp_range = (!var.value) ? 0x9999 : ((atoi(var.value) * 65536) / 100); + } + +#ifdef HAVE_EQ + var.key = "genesis_plus_gx_audio_eq_low"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + uint8_t new_lg = (!var.value) ? 100 : atoi(var.value); + if (new_lg != config.lg) restart_eq = true; + config.lg = new_lg; + } + + var.key = "genesis_plus_gx_audio_eq_mid"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + uint8_t new_mg = (!var.value) ? 100 : atoi(var.value); + if (new_mg != config.mg) restart_eq = true; + config.mg = new_mg; + } + + var.key = "genesis_plus_gx_audio_eq_high"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + uint8_t new_hg = (!var.value) ? 100 : atoi(var.value); + if (new_hg != config.hg) restart_eq = true; + config.hg = new_hg; + + } +#endif + + var.key = "genesis_plus_gx_ym2612"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { +#ifdef HAVE_YM3438_CORE + orig_value = config.ym3438; + if (var.value && !strcmp(var.value, "nuked (ym2612)")) + { + OPN2_SetChipType(ym3438_mode_ym2612); + config.ym3438 = 1; + } + else if (var.value && !strcmp(var.value, "nuked (ym3438)")) + { + OPN2_SetChipType(ym3438_mode_readmode); + config.ym3438 = 2; + } + else + { + config.ym3438 = 0; + } + + if (((orig_value == 0) && (config.ym3438 > 0)) || ((orig_value > 0) && (config.ym3438 == 0))) + { + sound_init(); + sound_reset(); + } +#endif + + if (!var.value || !strcmp(var.value, "mame (ym2612)")) + { + config.ym2612 = YM2612_DISCRETE; + YM2612Config(YM2612_DISCRETE); + } + else if (var.value && !strcmp(var.value, "mame (asic ym3438)")) + { + config.ym2612 = YM2612_INTEGRATED; + YM2612Config(YM2612_INTEGRATED); + } + else + { + config.ym2612 = YM2612_ENHANCED; + YM2612Config(YM2612_ENHANCED); + } + } + + var.key = "genesis_plus_gx_frameskip"; + var.value = NULL; + orig_value = frameskip_type; + frameskip_type = 0; + + 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; + } + + update_frameskip = update_frameskip || (frameskip_type != orig_value); + + var.key = "genesis_plus_gx_frameskip_threshold"; + var.value = NULL; + frameskip_threshold = 33; + + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + frameskip_threshold = strtol(var.value, NULL, 10); + + var.key = "genesis_plus_gx_blargg_ntsc_filter"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.ntsc; + + if (!var.value || !strcmp(var.value, "disabled")) + config.ntsc = 0; + else if (var.value && !strcmp(var.value, "monochrome")) + { + config.ntsc = 1; + sms_ntsc_init(sms_ntsc, &sms_ntsc_monochrome); + md_ntsc_init(md_ntsc, &md_ntsc_monochrome); + } + else if (var.value && !strcmp(var.value, "composite")) + { + config.ntsc = 1; + sms_ntsc_init(sms_ntsc, &sms_ntsc_composite); + md_ntsc_init(md_ntsc, &md_ntsc_composite); + } + else if (var.value && !strcmp(var.value, "svideo")) + { + config.ntsc = 1; + sms_ntsc_init(sms_ntsc, &sms_ntsc_svideo); + md_ntsc_init(md_ntsc, &md_ntsc_svideo); + } + else if (var.value && !strcmp(var.value, "rgb")) + { + config.ntsc = 1; + sms_ntsc_init(sms_ntsc, &sms_ntsc_rgb); + md_ntsc_init(md_ntsc, &md_ntsc_rgb); + } + + if (orig_value != config.ntsc) + update_viewports = true; + } + + var.key = "genesis_plus_gx_lcd_filter"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "disabled")) + config.lcd = 0; + else if (var.value && !strcmp(var.value, "enabled")) + config.lcd = (uint8)(0.80 * 256); + } + + var.key = "genesis_plus_gx_overscan"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.overscan; + if (!var.value || !strcmp(var.value, "disabled")) + config.overscan = 0; + else if (var.value && !strcmp(var.value, "top/bottom")) + config.overscan = 1; + else if (var.value && !strcmp(var.value, "left/right")) + config.overscan = 2; + else if (var.value && !strcmp(var.value, "full")) + config.overscan = 3; + if (orig_value != config.overscan) + update_viewports = true; + } + + var.key = "genesis_plus_gx_gg_extra"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.gg_extra; + if (!var.value || !strcmp(var.value, "disabled")) + config.gg_extra = 0; + else if (var.value && !strcmp(var.value, "enabled")) + config.gg_extra = 1; + if (orig_value != config.gg_extra) + update_viewports = true; + } + + var.key = "genesis_plus_gx_aspect_ratio"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.aspect_ratio; + if (var.value && !strcmp(var.value, "NTSC PAR")) + config.aspect_ratio = 1; + else if (var.value && !strcmp(var.value, "PAL PAR")) + config.aspect_ratio = 2; + else if (var.value && !strcmp(var.value, "4:3")) + config.aspect_ratio = 3; + else if (var.value && !strcmp(var.value, "Uncorrected")) + config.aspect_ratio = 4; + else + config.aspect_ratio = 0; + if (orig_value != config.aspect_ratio) + update_viewports = true; + } + + var.key = "genesis_plus_gx_render"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.render; + if (!var.value || !strcmp(var.value, "single field")) + config.render = 0; + else + config.render = 1; + if (orig_value != config.render) + update_viewports = true; + } + + var.key = "genesis_plus_gx_gun_cursor"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "disabled")) + config.gun_cursor = 0; + else + config.gun_cursor = 1; + } + + var.key = "genesis_plus_gx_gun_input"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "touchscreen")) + retro_gun_mode = RetroPointer; + else + retro_gun_mode = RetroLightgun; + } + + var.key = "genesis_plus_gx_invert_mouse"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "disabled")) + config.invert_mouse = 0; + else + config.invert_mouse = 1; + } + + var.key = "genesis_plus_gx_left_border"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + orig_value = config.left_border; + if (!var.value || !strcmp(var.value, "disabled")) + config.left_border = 0; + else if (var.value && !strcmp(var.value, "left border")) + config.left_border = 1; + else if (var.value && !strcmp(var.value, "left & right borders")) + config.left_border = 2; + if (orig_value != config.left_border) + update_viewports = true; + } + +#ifdef HAVE_OVERCLOCK + var.key = "genesis_plus_gx_overclock"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + config.overclock = (!var.value) ? 100 : atoi(var.value); + + if (system_hw) + update_overclock(); + } +#endif + + var.key = "genesis_plus_gx_no_sprite_limit"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "disabled")) + config.no_sprite_limit = 0; + else + config.no_sprite_limit = 1; + } + + var.key = "genesis_plus_gx_enhanced_vscroll"; + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var); + { + if (!var.value || !strcmp(var.value, "disabled")) + config.enhanced_vscroll = 0; + else + config.enhanced_vscroll = 1; + } + + var.key = "genesis_plus_gx_enhanced_vscroll_limit"; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + config.enhanced_vscroll_limit = strtol(var.value, NULL, 10); + +#ifdef USE_PER_SOUND_CHANNELS_CONFIG + var.key = psg_channel_volume_base_str; + for (c = 0; c < 4; c++) + { + psg_channel_volume_base_str[28] = c+'0'; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var)) + { + config.psg_ch_volumes[c] = atoi(var.value); + /* need to recall config to have the settings applied */ + if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) + psg_config(0, config.psg_preamp, 0xff); + else + psg_config(0, config.psg_preamp, io_reg[6]); + } + } + + var.key = md_fm_channel_volume_base_str; + for (c = 0; c < 6; c++) + { + md_fm_channel_volume_base_str[27] = c+'0'; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var)) + config.md_ch_volumes[c] = atoi(var.value); + } + + var.key = sms_fm_channel_volume_base_str; + for (c = 0; c < 9; c++) + { + sms_fm_channel_volume_base_str[31] = c+'0'; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var)) + config.sms_fm_ch_volumes[c] = atoi(var.value); + } + + var.key = "genesis_plus_gx_show_advanced_audio_settings"; + var.value = NULL; + + /* If frontend supports core option categories, + * then genesis_plus_gx_show_advanced_audio_settings + * is ignored and no advanced options should be hidden */ + + if (!libretro_supports_option_categories && + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + bool show_advanced_av_settings_prev = show_advanced_av_settings; + + show_advanced_av_settings = true; + if (strcmp(var.value, "disabled") == 0) + show_advanced_av_settings = false; + + if (show_advanced_av_settings != show_advanced_av_settings_prev) + { + size_t i; + struct retro_core_option_display option_display; + char av_keys[19][40] = { + "genesis_plus_gx_psg_channel_0_volume", + "genesis_plus_gx_psg_channel_1_volume", + "genesis_plus_gx_psg_channel_2_volume", + "genesis_plus_gx_psg_channel_3_volume", + "genesis_plus_gx_md_channel_0_volume", + "genesis_plus_gx_md_channel_1_volume", + "genesis_plus_gx_md_channel_2_volume", + "genesis_plus_gx_md_channel_3_volume", + "genesis_plus_gx_md_channel_4_volume", + "genesis_plus_gx_md_channel_5_volume", + "genesis_plus_gx_sms_fm_channel_0_volume", + "genesis_plus_gx_sms_fm_channel_1_volume", + "genesis_plus_gx_sms_fm_channel_2_volume", + "genesis_plus_gx_sms_fm_channel_3_volume", + "genesis_plus_gx_sms_fm_channel_4_volume", + "genesis_plus_gx_sms_fm_channel_5_volume", + "genesis_plus_gx_sms_fm_channel_6_volume", + "genesis_plus_gx_sms_fm_channel_7_volume", + "genesis_plus_gx_sms_fm_channel_8_volume" + }; + + option_display.visible = show_advanced_av_settings; + + for (i = 0; i < 19; i++) + { + option_display.key = av_keys[i]; + environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_DISPLAY, &option_display); + } + } + } +#endif + + if (reinit) + { +#ifdef HAVE_OVERCLOCK + overclock_delay = OVERCLOCK_FRAME_DELAY; +#endif + audio_init(SOUND_FREQUENCY, 0); + memcpy(temp, sram.sram, sizeof(temp)); + system_init(); + system_reset(); + memcpy(sram.sram, temp, sizeof(temp)); + update_viewports = true; + } + + if (update_viewports) + { + bitmap.viewport.changed = 11; + if ((system_hw == SYSTEM_GG) && !config.gg_extra) + bitmap.viewport.x = (config.overscan & 2) ? 14 : -48; + else + bitmap.viewport.x = (config.overscan & 2) * 7 ; + } + + /* Reinitialise frameskipping, if required */ + if ((update_frameskip || reinit) && !first_run) + init_frameskip(); +} + +/* Cheat Support */ +static uint32_t decode_cheat(char *string, int index) +{ + char *p; + int i,n; + uint32_t len = 0; + uint32_t address = 0; + uint16_t data = 0; + uint8_t ref = 0; + + if ((system_hw & SYSTEM_PBC) == SYSTEM_MD){ + /*If system is Genesis-based*/ + + /*Game-Genie*/ + if ((strlen(string) >= 9) && (string[4] == '-')) + { + for (i = 0; i < 8; i++) + { + if (i == 4) string++; + p = strchr (ggvalidchars, *string++); + if (!p) + return 0; + n = p - ggvalidchars; + switch (i) + { + case 0: + data |= n << 3; + break; + case 1: + data |= n >> 2; + address |= (n & 3) << 14; + break; + case 2: + address |= n << 9; + break; + case 3: + address |= (n & 0xF) << 20 | (n >> 4) << 8; + break; + case 4: + data |= (n & 1) << 12; + address |= (n >> 1) << 16; + break; + case 5: + data |= (n & 1) << 15 | (n >> 1) << 8; + break; + case 6: + data |= (n >> 3) << 13; + address |= (n & 7) << 5; + break; + case 7: + address |= n; + break; + } + } + /* code length */ + len = 9; + } + + /*Patch and PAR*/ + else if ((strlen(string) >=9) && (string[6] == ':')) + { + /* decode 24-bit address */ + for (i=0; i<6; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + address |= (n << ((5 - i) * 4)); + } + /* decode 16-bit data */ + string++; + for (i=0; i<4; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + break; + n = (p - arvalidchars) & 0xF; + data |= (n << ((3 - i) * 4)); + } + /* code length */ + len = 11; + } + } else { + /*If System is Master-based*/ + + /*Game Genie*/ + if ((strlen(string) >=7) && (string[3] == '-')) + { + /* decode 8-bit data */ + for (i=0; i<2; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + data |= (n << ((1 - i) * 4)); + } + + /* decode 16-bit address (low 12-bits) */ + for (i=0; i<3; i++) + { + if (i==1) string++; /* skip separator */ + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + address |= (n << ((2 - i) * 4)); + } + /* decode 16-bit address (high 4-bits) */ + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + n ^= 0xF; /* bits inversion */ + address |= (n << 12); + /* Optional: decode reference 8-bit data */ + if (*string=='-') + { + for (i=0; i<2; i++) + { + string++; /* skip separator and 2nd digit */ + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + ref |= (n << ((1 - i) * 4)); + } + ref = (ref >> 2) | ((ref & 0x03) << 6); /* 2-bit right rotation */ + ref ^= 0xBA; /* XOR */ + /* code length */ + len = 11; + } + else + { + /* code length */ + len = 7; + } + } + + /*Action Replay*/ + else if ((strlen(string) >=9) && (string[4] == '-')){ + string+=2; + /* decode 16-bit address */ + for (i=0; i<4; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + address |= (n << ((3 - i) * 4)); + if (i==1) string++; + } + /* decode 8-bit data */ + for (i=0; i<2; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + data |= (n << ((1 - i) * 4)); + } + /* code length */ + len = 9; + } + + /*Fusion RAM*/ + else if ((strlen(string) >=7) && (string[4] == ':')) + { + /* decode 16-bit address */ + for (i=0; i<4; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + address |= (n << ((3 - i) * 4)); + } + /* decode 8-bit data */ + string++; + for (i=0; i<2; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + data |= (n << ((1 - i) * 4)); + } + /* code length */ + len = 7; + } + + /*Fusion ROM*/ + else if ((strlen(string) >=9) && (string[6] == ':')) + { + /* decode reference 8-bit data */ + for (i=0; i<2; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + ref |= (n << ((1 - i) * 4)); + } + /* decode 16-bit address */ + for (i=0; i<4; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + address |= (n << ((3 - i) * 4)); + } + /* decode 8-bit data */ + string++; + for (i=0; i<2; i++) + { + p = strchr (arvalidchars, *string++); + if (!p) + return 0; + n = (p - arvalidchars) & 0xF; + data |= (n << ((1 - i) * 4)); + } + /* code length */ + len = 9; + } + /* convert to 24-bit Work RAM address */ + if (address >= 0xC000) + address = 0xFF0000 | (address & 0x1FFF); + } + /* Valid code found ? */ + if (len) + { + /* update cheat address & data values */ + cheatlist[index].address = address; + cheatlist[index].data = data; + cheatlist[index].old = ref; + } + /* return code length (0 = invalid) */ + return len; +} + +static void apply_cheats(void) +{ + uint8_t *ptr; + int i; + /* clear ROM&RAM patches counter */ + maxROMcheats = maxRAMcheats = 0; + + for (i = 0; i < maxcheats; i++) + { + if (cheatlist[i].enable) + { + /* detect Work RAM patch */ + if (cheatlist[i].address >= 0xFF0000) + { + /* add RAM patch */ + cheatIndexes[maxRAMcheats++] = i; + } + + /* check if Mega-CD game is running */ + else if ((system_hw == SYSTEM_MCD) && !scd.cartridge.boot) + { + /* detect PRG-RAM patch (Sub-CPU side) */ + if (cheatlist[i].address < 0x80000) + { + /* add RAM patch */ + cheatIndexes[maxRAMcheats++] = i; + } + + /* detect Word-RAM patch (Main-CPU side)*/ + else if ((cheatlist[i].address >= 0x200000) && (cheatlist[i].address < 0x240000)) + { + /* add RAM patch */ + cheatIndexes[maxRAMcheats++] = i; + } + } + + /* detect cartridge ROM patch */ + else if (cheatlist[i].address < cart.romsize) + { + if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) + { + /* patch ROM data */ + cheatlist[i].old = *(uint16_t *)(cart.rom + (cheatlist[i].address & 0xFFFFFE)); + *(uint16_t *)(cart.rom + (cheatlist[i].address & 0xFFFFFE)) = cheatlist[i].data; + } + else + { + /* add ROM patch */ + maxROMcheats++; + cheatIndexes[MAX_CHEATS - maxROMcheats] = i; + /* get current banked ROM address */ + ptr = &z80_readmap[(cheatlist[i].address) >> 10][cheatlist[i].address & 0x03FF]; + /* check if reference matches original ROM data */ + if (((uint8_t)cheatlist[i].old) == *ptr) + { + /* patch data */ + *ptr = cheatlist[i].data; + /* save patched ROM address */ + cheatlist[i].prev = ptr; + } + else + { + /* no patched ROM address yet */ + cheatlist[i].prev = NULL; + } + } + } + } + } +} + +static void clear_cheats(void) +{ + int i; + + /* no ROM patches with Mega-CD games */ + if ((system_hw == SYSTEM_MCD) && !scd.cartridge.boot) + return; + + /* disable cheats in reversed order in case the same address is used by multiple ROM patches */ + i = maxcheats; + while (i > 0) + { + if (cheatlist[i-1].enable) + { + if (cheatlist[i-1].address < cart.romsize) + { + if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) + { + /* restore original ROM data */ + *(uint16_t *)(cart.rom + (cheatlist[i-1].address & 0xFFFFFE)) = cheatlist[i-1].old; + } + else + { + /* check if previous banked ROM address has been patched */ + if (cheatlist[i-1].prev != NULL) + { + /* restore original data */ + *cheatlist[i-1].prev = cheatlist[i-1].old; + /* no more patched ROM address */ + cheatlist[i-1].prev = NULL; + } + } + } + } + i--; + } +} + +/**************************************************************************** +* RAMCheatUpdate +* +* Apply RAM patches (this should be called once per frame) +* +****************************************************************************/ +static void RAMCheatUpdate(void) +{ + uint8_t *base; + uint32_t mask; + int index, cnt = maxRAMcheats; + + while (cnt) + { + /* get cheat index */ + index = cheatIndexes[--cnt]; + + /* detect destination RAM */ + switch ((cheatlist[index].address >> 20) & 0xf) + { + case 0x0: /* Mega-CD PRG-RAM (512 KB) */ + base = scd.prg_ram; + mask = 0x7fffe; + break; + + case 0x2: /* Mega-CD 2M Word-RAM (256 KB) */ + base = scd.word_ram_2M; + mask = 0x3fffe; + break; + + default: /* Work-RAM (64 KB) */ + base = work_ram; + mask = 0xfffe; + break; + } + + /* apply RAM patch */ + if (cheatlist[index].data & 0xFF00) + { + /* word patch */ + *(uint16_t *)(base + (cheatlist[index].address & mask)) = cheatlist[index].data; + } + else + { + /* byte patch */ + mask |= 1; + base[cheatlist[index].address & mask] = cheatlist[index].data; + } + } +} + +/**************************************************************************** + * ROMCheatUpdate + * + * Apply ROM patches (this should be called each time banking is changed) + * + ****************************************************************************/ +void ROMCheatUpdate(void) +{ + int index, cnt = maxROMcheats; + uint8_t *ptr; + + while (cnt) + { + /* get cheat index */ + index = cheatIndexes[MAX_CHEATS - cnt]; + + /* check if previous banked ROM address was patched */ + if (cheatlist[index].prev != NULL) + { + /* restore original data */ + *cheatlist[index].prev = cheatlist[index].old; + + /* no more patched ROM address */ + cheatlist[index].prev = NULL; + } + + /* get current banked ROM address */ + ptr = &z80_readmap[(cheatlist[index].address) >> 10][cheatlist[index].address & 0x03FF]; + + /* check if reference exists and matches original ROM data */ + if (!cheatlist[index].old || ((uint8_t)cheatlist[index].old) == *ptr) + { + /* patch data */ + *ptr = cheatlist[index].data; + + /* save patched ROM address */ + cheatlist[index].prev = ptr; + } + + /* next ROM patch */ + cnt--; + } +} + +static void set_memory_maps(void) +{ + if (system_hw == SYSTEM_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, work_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, scd.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); + } +} + +/**************************************************************************** + * Disk control interface + ****************************************************************************/ +#define MAX_DISKS 4 +static int disk_index; +static int disk_count; +static char *disk_info[MAX_DISKS]; + +static bool disk_set_eject_state(bool ejected) +{ + if (system_hw != SYSTEM_MCD) + return false; + + if (ejected) + { + cdd.status = CD_OPEN; + scd.regs[0x36>>1].byte.h = 0x01; + } + else if (cdd.status == CD_OPEN) + { + cdd.status = cdd.loaded ? CD_TOC : NO_DISC; + } + + return true; +} + +static bool disk_get_eject_state(void) +{ + if (system_hw != SYSTEM_MCD) + return false; + + return (cdd.status == CD_OPEN); +} + +static unsigned int disk_get_image_index(void) +{ + if ((system_hw != SYSTEM_MCD) || !cdd.loaded) + return disk_count; + + return disk_index; +} + +static bool disk_set_image_index(unsigned int index) +{ + char header[0x210]; + + if (system_hw != SYSTEM_MCD) + return false; + + if (index >= disk_count) + { + cdd.loaded = 0; + return true; + } + + if (disk_info[index] == NULL) + return false; + + cdd_load(disk_info[index], header); + + if (!cdd.loaded) + return false; + + disk_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) +{ + if (system_hw != SYSTEM_MCD) + return false; + + if (index >= disk_count) + return false; + + if (disk_info[index] != NULL) + free(disk_info[index]); + + disk_info[index] = NULL; + + if (info != NULL) + { + if (info->path == NULL) + return false; + + disk_info[index] = strdup(info->path); + + if (index == disk_index) + return disk_set_image_index(index); + } + else + { + int i = index; + + while (i < (disk_count-1)) + { + disk_info[i] = disk_info[i+1]; + disk_info[i+1] = NULL; + } + + disk_count--; + + if (index < disk_index) + disk_index--; + } + + return true; +} + +static bool disk_add_image_index(void) +{ + if (system_hw != SYSTEM_MCD) + return false; + + if (disk_count >= MAX_DISKS) + return false; + + disk_count++; + return true; +} + +static struct retro_disk_control_callback disk_ctrl = +{ + 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 +}; + +/************************************ + * libretro implementation + ************************************/ +unsigned retro_api_version(void) { return RETRO_API_VERSION; } + +void retro_set_environment(retro_environment_t cb) +{ + bool option_categories = false; + struct retro_vfs_interface_info vfs_iface_info; + struct retro_led_interface led_interface; + + static const struct retro_controller_description port_1[] = { + { "Joypad Auto", RETRO_DEVICE_JOYPAD }, + { "Joypad Port Empty", RETRO_DEVICE_NONE }, + { "MD Joypad 3 Button", RETRO_DEVICE_MDPAD_3B }, + { "MD Joypad 6 Button", RETRO_DEVICE_MDPAD_6B }, + { "MS Joypad 2 Button", RETRO_DEVICE_MSPAD_2B }, + { "MD Joypad 3 Button + 4-WayPlay", RETRO_DEVICE_MDPAD_3B_WAYPLAY }, + { "MD Joypad 6 Button + 4-WayPlay", RETRO_DEVICE_MDPAD_6B_WAYPLAY }, + { "MD Joypad 3 Button + Teamplayer", RETRO_DEVICE_MDPAD_3B_TEAMPLAYER }, + { "MD Joypad 6 Button + Teamplayer", RETRO_DEVICE_MDPAD_6B_TEAMPLAYER }, + { "MS Joypad 2 Button + Master Tap", RETRO_DEVICE_MSPAD_2B_MASTERTAP }, + { "MS Light Phaser", RETRO_DEVICE_PHASER }, + { "MS Paddle Control", RETRO_DEVICE_PADDLE }, + { "MS Sports Pad", RETRO_DEVICE_SPORTSPAD }, + { "MS Graphic Board", RETRO_DEVICE_GRAPHIC_BOARD }, + { "MD XE-1AP", RETRO_DEVICE_XE_1AP }, + { "MD Mouse", RETRO_DEVICE_MOUSE }, + }; + + static const struct retro_controller_description port_2[] = { + { "Joypad Auto", RETRO_DEVICE_JOYPAD }, + { "Joypad Port Empty", RETRO_DEVICE_NONE }, + { "MD Joypad 3 Button", RETRO_DEVICE_MDPAD_3B }, + { "MD Joypad 6 Button", RETRO_DEVICE_MDPAD_6B }, + { "MS Joypad 2 Button", RETRO_DEVICE_MSPAD_2B }, + { "MD Joypad 3 Button + 4-WayPlay", RETRO_DEVICE_MDPAD_3B_WAYPLAY }, + { "MD Joypad 6 Button + 4-WayPlay", RETRO_DEVICE_MDPAD_6B_WAYPLAY }, + { "MD Joypad 3 Button + Teamplayer", RETRO_DEVICE_MDPAD_3B_TEAMPLAYER }, + { "MD Joypad 6 Button + Teamplayer", RETRO_DEVICE_MDPAD_6B_TEAMPLAYER }, + { "MS Joypad 2 Button + Master Tap", RETRO_DEVICE_MSPAD_2B_MASTERTAP }, + { "MD Menacer", RETRO_DEVICE_MENACER }, + { "MD Justifiers", RETRO_DEVICE_JUSTIFIERS }, + { "MS Light Phaser", RETRO_DEVICE_PHASER }, + { "MS Paddle Control", RETRO_DEVICE_PADDLE }, + { "MS Sports Pad", RETRO_DEVICE_SPORTSPAD }, + { "MS Graphic Board", RETRO_DEVICE_GRAPHIC_BOARD }, + { "MD XE-1AP", RETRO_DEVICE_XE_1AP }, + { "MD Mouse", RETRO_DEVICE_MOUSE }, + }; + + static const struct retro_controller_info ports[] = { + { port_1, 16 }, + { port_2, 18 }, + { 0 }, + }; + + static const 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" }, + + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, + { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, + + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, + { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, + + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, + { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, + + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, + { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, + + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, + { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, + + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" }, + { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, + + { 0 }, + }; + + static const struct retro_system_content_info_override content_overrides[] = { + { + "mdx|md|bin|smd|gen|bms|sms|gg|sg|68k|sgd", /* extensions */ +#if defined(LOW_MEMORY) + true, /* need_fullpath */ +#else + false, /* need_fullpath */ +#endif + false /* persistent_data */ + }, + { NULL, false, false } + }; + + environ_cb = cb; + + /* An annoyance: retro_set_environment() can be called + * multiple times, and depending upon the current frontend + * state various environment callbacks may be disabled. + * This means the reported 'categories_supported' status + * may change on subsequent iterations. We therefore have + * to record whether 'categories_supported' is true on any + * iteration, and latch the result */ + libretro_set_core_options(environ_cb, &option_categories); + libretro_supports_option_categories |= option_categories; + + /* If frontend supports core option categories, + * genesis_plus_gx_show_advanced_audio_settings + * is unused and should be hidden */ + if (libretro_supports_option_categories) + { + struct retro_core_option_display option_display; + + option_display.visible = false; + option_display.key = "genesis_plus_gx_show_advanced_audio_settings"; + + environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_DISPLAY, + &option_display); + } + + cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports); + cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, (void*)desc); + cb(RETRO_ENVIRONMENT_SET_CONTENT_INFO_OVERRIDE, (void*)content_overrides); + + vfs_iface_info.required_interface_version = 2; + vfs_iface_info.iface = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VFS_INTERFACE, &vfs_iface_info)) + filestream_vfs_init(&vfs_iface_info); + + if (environ_cb(RETRO_ENVIRONMENT_GET_LED_INTERFACE, &led_interface)) { + if (led_interface.set_led_state && !led_state_cb) + led_state_cb = led_interface.set_led_state; + } +} + +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_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; } + + +void retro_get_system_info(struct retro_system_info *info) +{ + info->library_name = "Genesis Plus GX"; +#ifndef GIT_VERSION +#define GIT_VERSION "" +#endif + info->library_version = "v1.7.4" GIT_VERSION; + info->valid_extensions = "m3u|mdx|md|smd|gen|bin|cue|iso|chd|bms|sms|gg|sg|68k|sgd"; + info->block_extract = false; + info->need_fullpath = true; +} + +void retro_get_system_av_info(struct retro_system_av_info *info) +{ + info->geometry.base_width = vwidth; + info->geometry.base_height = bitmap.viewport.h + (2 * bitmap.viewport.y); + /* Set maximum dimensions based upon emulated system/config */ + if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) + { + /* 16 bit system */ + if (config.ntsc) { + info->geometry.max_width = MD_NTSC_OUT_WIDTH(320 + (bitmap.viewport.x * 2)); + } else { + info->geometry.max_width = 320 + (bitmap.viewport.x * 2); + } + if (config.render) { + info->geometry.max_height = 480 + (vdp_pal * 96 * (config.overscan & 1)); + } else { + info->geometry.max_height = 240 + (vdp_pal * 48 * (config.overscan & 1)); + } + } + else + { + /* 8 bit system */ + if (config.ntsc) { + info->geometry.max_width = SMS_NTSC_OUT_WIDTH(256 + (bitmap.viewport.x * 2)); + } else { + info->geometry.max_width = 256 + (bitmap.viewport.x * 2); + } + info->geometry.max_height = 240 + (vdp_pal * 48 * (config.overscan & 1)); + } + info->geometry.aspect_ratio = vaspect_ratio; + info->timing.fps = (double)(system_clock) / (double)lines_per_frame / (double)MCYCLES_PER_LINE; + info->timing.sample_rate = SOUND_FREQUENCY; +} + +void retro_set_controller_port_device(unsigned port, unsigned device) +{ + if (port > 1) + return; + + switch(device) + { + case RETRO_DEVICE_NONE: + input.system[port] = NO_SYSTEM; + break; + case RETRO_DEVICE_MDPAD_3B: + { + if (port && (input.system[0] >= SYSTEM_MASTERTAP) && (input.system[0] <= SYSTEM_WAYPLAY)) + config.input[4].padtype = DEVICE_PAD3B; + else + config.input[port].padtype = DEVICE_PAD3B; + input.system[port] = SYSTEM_GAMEPAD; + break; + } + case RETRO_DEVICE_MDPAD_6B: + { + if (port && (input.system[0] >= SYSTEM_MASTERTAP) && (input.system[0] <= SYSTEM_WAYPLAY)) + config.input[4].padtype = DEVICE_PAD6B; + else + config.input[port].padtype = DEVICE_PAD6B; + input.system[port] = SYSTEM_GAMEPAD; + break; + } + case RETRO_DEVICE_MSPAD_2B: + { + if (port && (input.system[0] >= SYSTEM_MASTERTAP) && (input.system[0] <= SYSTEM_WAYPLAY)) + config.input[4].padtype = DEVICE_PAD2B; + else + config.input[port].padtype = DEVICE_PAD2B; + input.system[port] = SYSTEM_GAMEPAD; + break; + } + case RETRO_DEVICE_MDPAD_3B_WAYPLAY: + { + int i; + for (i=0; i<4; i++) + { + config.input[i].padtype = DEVICE_PAD3B; + } + input.system[0] = input.system[1] = SYSTEM_WAYPLAY; + break; + } + case RETRO_DEVICE_MDPAD_6B_WAYPLAY: + { + int i; + for (i=0; i<4; i++) + { + config.input[i].padtype = DEVICE_PAD6B; + } + input.system[0] = input.system[1] = SYSTEM_WAYPLAY; + break; + } + case RETRO_DEVICE_MDPAD_3B_TEAMPLAYER: + { + int i; + for (i=0; i<4; i++) + { + config.input[port*4 + i].padtype = DEVICE_PAD3B; + } + input.system[port] = SYSTEM_TEAMPLAYER; + break; + } + case RETRO_DEVICE_MDPAD_6B_TEAMPLAYER: + { + int i; + for (i=0; i<4; i++) + { + config.input[port*4 + i].padtype = DEVICE_PAD6B; + } + input.system[port] = SYSTEM_TEAMPLAYER; + break; + } + case RETRO_DEVICE_MSPAD_2B_MASTERTAP: + { + int i; + for (i=0; i<4; i++) + { + config.input[port*4 + i].padtype = DEVICE_PAD2B; + } + input.system[port] = SYSTEM_MASTERTAP; + break; + } + case RETRO_DEVICE_MENACER: + input.system[1] = SYSTEM_MENACER; + break; + case RETRO_DEVICE_JUSTIFIERS: + input.system[1] = SYSTEM_JUSTIFIER; + break; + case RETRO_DEVICE_PHASER: + input.system[port] = SYSTEM_LIGHTPHASER; + break; + case RETRO_DEVICE_PADDLE: + input.system[port] = SYSTEM_PADDLE; + break; + case RETRO_DEVICE_SPORTSPAD: + input.system[port] = SYSTEM_SPORTSPAD; + break; + case RETRO_DEVICE_XE_1AP: + input.system[port] = SYSTEM_XE_1AP; + break; + case RETRO_DEVICE_MOUSE: + input.system[port] = SYSTEM_MOUSE; + break; + case RETRO_DEVICE_GRAPHIC_BOARD: + input.system[port] = SYSTEM_GRAPHIC_BOARD; + break; + case RETRO_DEVICE_JOYPAD: + default: + { + if (port && (input.system[0] >= SYSTEM_MASTERTAP) && (input.system[0] <= SYSTEM_WAYPLAY)) + config.input[4].padtype = DEVICE_PAD2B | DEVICE_PAD6B | DEVICE_PAD3B; + else + config.input[port].padtype = DEVICE_PAD2B | DEVICE_PAD6B | DEVICE_PAD3B; + input.system[port] = SYSTEM_GAMEPAD; + break; + } + } + + old_system[0] = input.system[0]; + old_system[1] = input.system[1]; + + io_init(); + input_reset(); +} + +size_t retro_serialize_size(void) { return STATE_SIZE; } + +extern int8 fast_savestates; + +bool get_fast_savestates(void) +{ + int result = -1; + bool okay = false; + okay = environ_cb(RETRO_ENVIRONMENT_GET_AUDIO_VIDEO_ENABLE, &result); + if (okay) + { + return 0 != (result & 4); + } + else + { + return 0; + } +} + +bool retro_serialize(void *data, size_t size) +{ + fast_savestates = get_fast_savestates(); + if (size != STATE_SIZE) + return FALSE; + + state_save(data); + if (fast_savestates) save_sound_buffer(); + + return TRUE; +} + +bool retro_unserialize(const void *data, size_t size) +{ + fast_savestates = get_fast_savestates(); + if (size != STATE_SIZE) + return FALSE; + + if (!state_load((uint8_t*)data)) + return FALSE; + + if (fast_savestates) restore_sound_buffer(); + +#ifdef HAVE_OVERCLOCK + update_overclock(); +#endif + + return TRUE; +} + +void retro_cheat_reset(void) +{ + /* clear existing ROM patches */ + clear_cheats(); + /* delete all cheats */ + maxcheats = maxROMcheats = maxRAMcheats = 0; +} + +void retro_cheat_set(unsigned index, bool enabled, const char *code) +{ + char codeCopy[256]; + char *buff; + + /* Avoid crashing when giving no input */ + if (code==NULL) return; + + /* clear existing ROM patches */ + clear_cheats(); + + /* Detect and split multiline cheats */ + strncpy(codeCopy,code,255); + codeCopy[255] = '\0'; + buff = strtok(codeCopy,"+"); + + while (buff != NULL) + { + /* interpret code and check if this is a valid cheat code */ + if (decode_cheat((char *)buff, maxcheats)) + { + int i; + + /* check if cheat code already exists */ + for (i=0; idata; + g_rom_size = info_ext->size; +#endif + strncpy(g_rom_dir, info_ext->dir, sizeof(g_rom_dir)); + g_rom_dir[sizeof(g_rom_dir) - 1] = '\0'; + + strncpy(g_rom_name, info_ext->name, sizeof(g_rom_name)); + g_rom_name[sizeof(g_rom_name) - 1] = '\0'; + + strncpy(content_ext, info_ext->ext, sizeof(content_ext)); + content_ext[sizeof(content_ext) - 1] = '\0'; + + if (info_ext->file_in_archive) + { + /* We don't have a 'physical' file in this + * case, but the core still needs a filename + * in order to detect associated content + * (Mega CD Mode 1/MegaSD MD+ mode). We therefore + * fake it, using the content directory, + * canonical content name, and content file + * extension */ + snprintf(content_path, sizeof(content_path), "%s%c%s.%s", + g_rom_dir, slash, g_rom_name, content_ext); + } + else + { + strncpy(content_path, info_ext->full_path, sizeof(content_path)); + content_path[sizeof(content_path) - 1] = '\0'; + } + } + else + { + const char *ext = NULL; + + if (!info || !info->path) + goto error; + + extract_directory(g_rom_dir, info->path, sizeof(g_rom_dir)); + extract_name(g_rom_name, info->path, sizeof(g_rom_name)); + + strncpy(content_path, info->path, sizeof(content_path)); + content_path[sizeof(content_path) - 1] = '\0'; + + if (ext = strrchr(info->path, '.')) + { + strncpy(content_ext, ext + 1, sizeof(content_ext)); + content_ext[sizeof(content_ext) - 1] = '\0'; + } + } + +#ifdef FRONTEND_SUPPORTS_RGB565 + { + unsigned rgb565 = RETRO_PIXEL_FORMAT_RGB565; + if(environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &rgb565)) + if (log_cb) + log_cb(RETRO_LOG_INFO, "Frontend supports RGB565 - will use that instead of XRGB1555.\n"); + } +#endif + + sms_ntsc = calloc(1, sizeof(sms_ntsc_t)); + md_ntsc = calloc(1, sizeof(md_ntsc_t)); + + init_bitmap(); + config_default(); + + if (!environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) || !dir) + { + if (log_cb) + log_cb(RETRO_LOG_INFO, "[genplus]: Defaulting system directory to %s.\n", g_rom_dir); + dir = g_rom_dir; + } + + if (!environ_cb(RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY, &save_dir) || !save_dir) + { + if (log_cb) + log_cb(RETRO_LOG_INFO, "[genplus]: Defaulting save directory to %s.\n", g_rom_dir); + save_dir = g_rom_dir; + } + + fill_pathname_join(GG_ROM, dir, "ggenie.bin", sizeof(GG_ROM)); + fill_pathname_join(AR_ROM, dir, "areplay.bin", sizeof(AR_ROM)); + fill_pathname_join(SK_ROM, dir, "sk.bin", sizeof(SK_ROM)); + fill_pathname_join(SK_UPMEM, dir, "sk2chip.bin", sizeof(SK_UPMEM)); + fill_pathname_join(MD_BIOS, dir, "bios_MD.bin", sizeof(MD_BIOS)); + fill_pathname_join(GG_BIOS, dir, "bios.gg", sizeof(GG_BIOS)); + fill_pathname_join(MS_BIOS_EU, dir, "bios_E.sms", sizeof(MS_BIOS_EU)); + fill_pathname_join(MS_BIOS_US, dir, "bios_U.sms", sizeof(MS_BIOS_US)); + fill_pathname_join(MS_BIOS_JP, dir, "bios_J.sms", sizeof(MS_BIOS_JP)); + fill_pathname_join(CD_BIOS_EU, dir, "bios_CD_E.bin", sizeof(CD_BIOS_EU)); + fill_pathname_join(CD_BIOS_US, dir, "bios_CD_U.bin", sizeof(CD_BIOS_US)); + fill_pathname_join(CD_BIOS_JP, dir, "bios_CD_J.bin", sizeof(CD_BIOS_JP)); + + check_variables(true); + + if (log_cb) + { + log_cb(RETRO_LOG_DEBUG, "Game Genie ROM should be located at: %s\n", GG_ROM); + log_cb(RETRO_LOG_DEBUG, "Action Replay (Pro) ROM should be located at: %s\n", AR_ROM); + log_cb(RETRO_LOG_DEBUG, "Sonic & Knuckles (2 MB) ROM should be located at: %s\n", SK_ROM); + log_cb(RETRO_LOG_DEBUG, "Sonic & Knuckles UPMEM (256 KB) ROM should be located at: %s\n", SK_UPMEM); + log_cb(RETRO_LOG_DEBUG, "Mega Drive TMSS BOOTROM should be located at: %s\n", MD_BIOS); + log_cb(RETRO_LOG_DEBUG, "Game Gear TMSS BOOTROM should be located at: %s\n", GG_BIOS); + log_cb(RETRO_LOG_DEBUG, "Master System (PAL) BOOTROM should be located at: %s\n", MS_BIOS_EU); + log_cb(RETRO_LOG_DEBUG, "Master System (NTSC-U) BOOTROM should be located at: %s\n", MS_BIOS_US); + log_cb(RETRO_LOG_DEBUG, "Master System (NTSC-J) BOOTROM should be located at: %s\n", MS_BIOS_JP); + log_cb(RETRO_LOG_DEBUG, "Mega CD (PAL) BIOS should be located at: %s\n", CD_BIOS_EU); + log_cb(RETRO_LOG_DEBUG, "Sega CD (NTSC-U) BIOS should be located at: %s\n", CD_BIOS_US); + log_cb(RETRO_LOG_DEBUG, "Mega CD (NTSC-J) BIOS should be located at: %s\n", CD_BIOS_JP); + log_cb(RETRO_LOG_DEBUG, "Mega CD (PAL) BRAM is located at: %s\n", CD_BRAM_EU); + log_cb(RETRO_LOG_DEBUG, "Sega CD (NTSC-U) BRAM is located at: %s\n", CD_BRAM_US); + log_cb(RETRO_LOG_DEBUG, "Mega CD (NTSC-J) BRAM is located at: %s\n", CD_BRAM_JP); + log_cb(RETRO_LOG_DEBUG, "Sega/Mega CD RAM CART is located at: %s\n", CART_BRAM); + } + + /* Clear disk interface (already done in retro_unload_game but better be safe) */ + disk_count = 0; + disk_index = 0; + for (i=0; i 0) + { + /* remove end-of-line character */ + if (linebuf[len-1] == '\n') + { + linebuf[len-1] = 0; + len--; + } + + /* remove carriage-return character */ + if (len && (linebuf[len-1] == '\r')) + { + linebuf[len-1] = 0; + len--; + } + + /* append file path to disk image file name */ + disk_info[disk_count] = malloc(strlen(g_rom_dir) + len + 2); + if (disk_info[disk_count] != NULL) + { + /* add file to disk interface */ + sprintf(disk_info[disk_count], "%s%c%s", g_rom_dir, slash, linebuf); + disk_count++; + if (log_cb) + log_cb(RETRO_LOG_INFO, "Disk #%d added from M3U file list: %s\n", disk_count, disk_info[disk_count-1]); + } + } + } + } + } + + /* automatically try to load first disk if at least one file was added to disk interface from M3U file list */ + if (disk_count > 0) + { + if (!load_rom(disk_info[0])) + { + if (log_cb) + log_cb(RETRO_LOG_ERROR, "Could not load %s from M3U file list\n", disk_info[0]); + + /* clear initialized disk interface before returning an error */ + for (i=0; i 0) + { + if (!memcmp((char *)(boot_rom + 0x120),"GENESIS OS", 10)) + { + system_bios |= SYSTEM_MD; + } + +#ifdef LSB_FIRST + for (i=0; i<0x800; i+=2) + { + uint8 temp = boot_rom[i]; + boot_rom[i] = boot_rom[i+1]; + boot_rom[i+1] = temp; + } +#endif + } + } + + audio_init(SOUND_FREQUENCY, 0); + system_init(); + system_reset(); + is_running = false; + + if (system_hw == SYSTEM_MCD) + bram_load(); + + update_viewport(); + +#ifdef HAVE_OVERCLOCK + overclock_delay = OVERCLOCK_FRAME_DELAY; + update_overclock(); +#endif + + set_memory_maps(); + + init_frameskip(); + + return true; + +error: + if (sms_ntsc) + free(sms_ntsc); + sms_ntsc = NULL; + + if (md_ntsc) + free(md_ntsc); + md_ntsc = NULL; + + system_hw = 0; + + return false; +} + +bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info) +{ + (void)game_type; + (void)info; + (void)num_info; + return FALSE; +} + +void retro_unload_game(void) +{ + /* Clear disk interface */ + int i; + disk_count = 0; + disk_index = 0; + for (i=0; i=0; i--) + if (sram.sram[i] != 0xff) + return (i+1); + + /* return 0 if SRAM is not modified */ + return 0; + } + + case RETRO_MEMORY_SYSTEM_RAM: + { + /* 16-bit hardware */ + if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) + return 0x10000; /* 64KB internal RAM */ + + /* get 8-bit cartrige on-board RAM size */ + i = sms_cart_ram_size(); + + if (i > 0) + return i + 0x2000; /* on-board RAM size + max 8KB internal RAM */ + else if (system_hw == SYSTEM_SGII) + return 0x0800; /* 2KB internal RAM */ + else if (system_hw == SYSTEM_SG) + return 0x0400; /* 1KB internal RAM */ + else + return 0x2000; /* 8KB internal RAM */ + } + + default: + return 0; + } +} + +static void check_system_specs(void) +{ + unsigned level = 7; + environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level); +} + +void retro_init(void) +{ + struct retro_log_callback log; + unsigned level = 1; + uint64_t serialization_quirks = RETRO_SERIALIZATION_QUIRK_PLATFORM_DEPENDENT; + + 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; + + if (environ_cb(RETRO_ENVIRONMENT_GET_INPUT_BITMASKS, NULL)) + libretro_supports_bitmasks = true; + + check_system_specs(); + + environ_cb(RETRO_ENVIRONMENT_SET_SERIALIZATION_QUIRKS, &serialization_quirks); + environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_ctrl); + + 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; +} + +void retro_deinit(void) +{ + libretro_supports_option_categories = false; + libretro_supports_bitmasks = false; + + g_rom_data = NULL; + g_rom_size = 0; +} + +void retro_reset(void) +{ +#ifdef HAVE_OVERCLOCK + overclock_delay = OVERCLOCK_FRAME_DELAY; + update_overclock(); +#endif + gen_reset(0); +} + +extern int8 audio_hard_disable; + +extern void sound_update_fm_function_pointers(void); + +void retro_run(void) +{ + bool okay = false; + int result = -1; + int do_skip = 0; + bool updated = false; + int vwoffset = 0; + int bmdoffset = 0; + is_running = true; + +#ifdef HAVE_OVERCLOCK + /* update overclock delay */ + if (overclock_delay && --overclock_delay == 0) + update_overclock(); +#endif + + environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated); + if (updated) + { + check_variables(false); + if (restart_eq) + { + audio_set_equalizer(); + restart_eq = false; + } + } + + okay = environ_cb(RETRO_ENVIRONMENT_GET_AUDIO_VIDEO_ENABLE, &result); + if (okay) + { + bool audioEnabled = 0 != (result & 2); + bool videoEnabled = 0 != (result & 1); + bool hardDisableAudio = 0 != (result & 8); + do_skip = !videoEnabled; + if (audio_hard_disable != hardDisableAudio) + { + audio_hard_disable = hardDisableAudio; + sound_update_fm_function_pointers(); + } + } + else + { + do_skip = false; + audio_hard_disable = false; + } + + /* Check whether current frame should + * be skipped */ + if ((frameskip_type > 0) && + retro_audio_buff_active && + !do_skip) + { + switch (frameskip_type) + { + case 1: /* auto */ + do_skip = retro_audio_buff_underrun ? 1 : 0; + break; + case 2: /* manual */ + do_skip = (retro_audio_buff_occupancy < frameskip_threshold) ? 1 : 0; + break; + default: + do_skip = 0; + break; + } + + if (!do_skip || (frameskip_counter >= FRAMESKIP_MAX)) + { + do_skip = 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; + } + + if (system_hw == SYSTEM_MCD) + { + system_frame_scd(do_skip); + } + else if ((system_hw & SYSTEM_PBC) == SYSTEM_MD) + { + system_frame_gen(do_skip); + } + else + { + system_frame_sms(do_skip); + } + + if (bitmap.viewport.changed & 9) + { + bool geometry_updated = update_viewport(); + bitmap.viewport.changed &= ~1; + if (bitmap.viewport.changed & 8) + { + struct retro_system_av_info info; + bitmap.viewport.changed &= ~8; + retro_get_system_av_info(&info); + environ_cb(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &info); + } + else if (geometry_updated) + { + struct retro_system_av_info info; + retro_get_system_av_info(&info); + environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &info.geometry); + } + } + + if (config.gun_cursor) + { + if (input.system[0] == SYSTEM_LIGHTPHASER) + { + draw_cursor(input.analog[0][0], input.analog[0][1], 0x001f); + } + else if (input.dev[4] == DEVICE_LIGHTGUN) + { + draw_cursor(input.analog[4][0], input.analog[4][1], 0x001f); + } + + if (input.system[1] == SYSTEM_LIGHTPHASER) + { + draw_cursor(input.analog[4][0], input.analog[4][1], 0xf800); + } + else if (input.dev[5] == DEVICE_LIGHTGUN) + { + draw_cursor(input.analog[5][0], input.analog[5][1], 0xf800); + } + } + + if ((config.left_border != 0) && (reg[0] & 0x20) && (bitmap.viewport.x == 0) && ((system_hw == SYSTEM_MARKIII) || (system_hw & SYSTEM_SMS) || (system_hw == SYSTEM_PBC))) + { + bmdoffset = (16 + (config.ntsc ? 24 : 0)); + if (config.left_border == 1) + vwoffset = (8 + (config.ntsc ? 12 : 0)); + else + vwoffset = (16 + (config.ntsc ? 24 : 0)); + } + + /* LED interface */ + if (led_state_cb) + retro_led_interface(); + + if (!do_skip) + { + video_cb(bitmap.data + bmdoffset, vwidth - vwoffset, vheight, 720 * 2); + } + else + { + video_cb(NULL, vwidth - vwoffset, vheight, 720 * 2); + } + + audio_cb(soundbuffer, audio_update(soundbuffer)); +} + +#undef CHUNKSIZE diff --git a/libretro/libretro_core_options.h b/libretro/libretro_core_options.h index b346109ff..93ba14be6 100644 --- a/libretro/libretro_core_options.h +++ b/libretro/libretro_core_options.h @@ -1,1730 +1,1745 @@ -#ifndef LIBRETRO_CORE_OPTIONS_H__ -#define LIBRETRO_CORE_OPTIONS_H__ - -#include -#include - -#include -#include - -#ifndef HAVE_NO_LANGEXTRA -#include "libretro_core_options_intl.h" -#endif - -/* - ******************************** - * VERSION: 2.0 - ******************************** - * - * - 2.0: Add support for core options v2 interface - * - 1.3: Move translations to libretro_core_options_intl.h - * - libretro_core_options_intl.h includes BOM and utf-8 - * fix for MSVC 2010-2013 - * - Added HAVE_NO_LANGEXTRA flag to disable translations - * on platforms/compilers without BOM support - * - 1.2: Use core options v1 interface when - * RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION is >= 1 - * (previously required RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION == 1) - * - 1.1: Support generation of core options v0 retro_core_option_value - * arrays containing options with a single value - * - 1.0: First commit -*/ - -#ifdef __cplusplus -extern "C" { -#endif - -/* - ******************************** - * Core Definitions - ******************************** -*/ - -#if defined(M68K_OVERCLOCK_SHIFT) || defined(Z80_OVERCLOCK_SHIFT) -#define HAVE_OVERCLOCK -#define HAVE_EQ -#endif - -/* - ******************************** - * Core Option Definitions - ******************************** -*/ - -/* RETRO_LANGUAGE_ENGLISH */ - -/* Default language: - * - All other languages must include the same keys and values - * - Will be used as a fallback in the event that frontend language - * is not available - * - Will be used as a fallback for any missing entries in - * frontend language definition */ - -struct retro_core_option_v2_category option_cats_us[] = { - { - "system", - "System", - "Change base hardware selection, region, BIOS and Sega CD/Mega-CD save file settings." - }, - { - "video", - "Video", - "Change aspect ratio, display cropping, video filter and frame skipping settings." - }, - { - "audio", - "Audio", - "Change audio device settings." - }, - { - "input", - "Input", - "Change light gun and/or mouse input settings." - }, - { - "hacks", - "Emulation Hacks", - "Change processor overclocking and emulation accuracy settings that affect low-level performance and compatibility." - }, - { - "channel_volume", - "Advanced Channel Volume Settings", - "Change the volume of individual hardware audio channels." - }, - { NULL, NULL, NULL }, -}; - -struct retro_core_option_v2_definition option_defs_us[] = { - { - "genesis_plus_gx_system_hw", - "System Hardware", - NULL, - "Runs loaded content with a specific emulated console. 'Auto' will select the most appropriate system for the current game.", - NULL, - "system", - { - { "auto", "Auto" }, - { "sg-1000", "SG-1000" }, - { "sg-1000 II", "SG-1000 II" }, - { "sg-1000 II + ram ext.","SG-1000 II + RAM Ext."}, - { "mark-III", "Mark III" }, - { "master system", "Master System" }, - { "master system II", "Master System II" }, - { "game gear", "Game Gear" }, - { "mega drive / genesis", "Mega Drive/Genesis" }, - { NULL, NULL }, - }, - "auto" - }, - { - "genesis_plus_gx_region_detect", - "System Region", - NULL, - "Specify which region the system is from. For consoles other than the Game Gear, 'PAL' is 50 Hz, while 'NTSC' is 60 Hz. Games may run faster or slower than normal if the incorrect region is selected.", - NULL, - "system", - { - { "auto", "Auto" }, - { "ntsc-u", "NTSC-U" }, - { "pal", "PAL" }, - { "ntsc-j", "NTSC-J" }, - { NULL, NULL }, - }, - "auto" - }, - { - "genesis_plus_gx_bios", - "System Boot ROM", - NULL, - "Use official BIOS/bootloader for emulated hardware, if present in RetroArch's system directory. Displays console-specific start-up sequence/animation, then runs loaded content.", - NULL, - "system", - { - { "disabled", NULL }, - { "enabled", NULL }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_system_bram", - "CD System BRAM (Requires Restart)", - NULL, - "When running Sega CD/Mega-CD content, specifies whether to share a single save file between all games from a specific region (Per-BIOS) or to create a separate save file for each game (Per-Game). Note that the Sega CD/Mega-CD has limited internal storage, sufficient only for a handful of titles. To avoid running out of space, the 'Per-Game' setting is recommended.", - NULL, - "system", - { - { "per bios", "Per-BIOS" }, - { "per game", "Per-Game" }, - { NULL, NULL }, - }, - "per bios" - }, - { - "genesis_plus_gx_cart_bram", - "CD Backup Cart BRAM (Requires Restart)", - NULL, - "When running Sega CD/Mega-CD content, specifies whether to share a single backup ram cart for all games (Per-Cart) or to create a separate backup ram cart for each game (Per-Game).", - NULL, - "system", - { - { "per cart", "Per-Cart" }, - { "per game", "Per-Game" }, - { NULL, NULL }, - }, - "per cart" - }, - { - "genesis_plus_gx_cart_size", - "CD Backup Cart BRAM Size (Requires Restart)", - NULL, - "Sets the backup ram cart size when running Sega CD/Mega-CD content. Useful when setting the backup ram cart to Per-Game to avoid multiple larger cart sizes.", - NULL, - "system", - { - { "disabled", "Disabled" }, - { "128k", "128Kbit" }, - { "256k", "256Kbit" }, - { "512k", "512Kbit" }, - { "1meg", "1Mbit" }, - { "2meg", "2Mbit" }, - { "4meg", "4Mbit" }, - { NULL, NULL }, - }, - "4meg" - }, - { - "genesis_plus_gx_add_on", - "CD add-on (MD mode) (Requires Restart)", - NULL, - "Specify which add-on to use for CD audio playback with supported Mega Drive/Genesis games.", - NULL, - "system", - { - { "auto", "Auto" }, - { "sega/mega cd", "Sega/Mega CD" }, - { "megasd", "MegaSD" }, - { "none", "None" }, - { NULL, NULL }, - }, - "auto" - }, - { - "genesis_plus_gx_lock_on", - "Cartridge Lock-On", - NULL, - "Lock-On Technology is a Mega Drive/Genesis feature that allowed an older game to connect to the pass-through port of a special cartridge for extended or altered gameplay. This option specifies which type of special 'lock-on' cartridge to emulate. A corresponding bios file must be present in RetroArch's system directory.", - NULL, - "system", - { - { "disabled", NULL }, - { "game genie", "Game Genie" }, - { "action replay (pro)", "Action Replay (Pro)" }, - { "sonic & knuckles", "Sonic & Knuckles" }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_aspect_ratio", - "Core-Provided Aspect Ratio", - NULL, - "Choose the preferred content aspect ratio. This will only apply when RetroArch's aspect ratio is set to 'Core provided' in the Video settings.", - NULL, - "video", - { - { "auto", "Auto" }, - { "NTSC PAR", NULL }, - { "PAL PAR", NULL }, - { "4:3", NULL }, - { "Uncorrected", NULL }, - }, - "auto" - }, - { - "genesis_plus_gx_overscan", - "Borders", - NULL, - "Enable this to display the overscan regions at the top/bottom and/or left/right of the screen. These would normally be hidden by the bezel around the edge of a standard-definition television.", - NULL, - "video", - { - { "disabled", NULL }, - { "top/bottom", "Top/Bottom" }, - { "left/right", "Left/Right" }, - { "full", "Full" }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_left_border", - "Hide Master System Side Borders", - NULL, - "Cuts off 8 pixels from either the left side of the screen, or both left and right sides when running Master System games.", - NULL, - "video", - { - { "disabled", NULL }, - { "left border", "Left Border Only" }, - { "left & right borders", "Left & Right Borders" }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_gg_extra", - "Game Gear Extended Screen", - NULL, - "Forces Game Gear titles to run in SMS mode, with an increased resolution of 256x192. May show additional content, but typically displays a border of corrupt/unwanted image data.", - NULL, - "video", - { - { "disabled", NULL }, - { "enabled", NULL }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_blargg_ntsc_filter", - "Blargg NTSC Filter", - NULL, - "Apply a video filter to mimic various NTSC TV signals.", - NULL, - "video", - { - { "disabled", NULL }, - { "monochrome", "Monochrome" }, - { "composite", "Composite" }, - { "svideo", "S-Video" }, - { "rgb", "RGB" }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_lcd_filter", - "LCD Ghosting Filter", - NULL, - "Apply an image 'ghosting' filter to mimic the display characteristics of the Game Gear and Genesis Nomad LCD panels.", - NULL, - "video", - { - { "disabled", NULL }, - { "enabled", NULL }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_render", - "Interlaced Mode 2 Output", - NULL, - "Interlaced Mode 2 allows the Mega Drive/Genesis to output a double height (high resolution) 320x448 image by drawing alternate scan lines each frame (this is used by Sonic the Hedgehog 2 and Combat Cars multiplayer modes). 'Double Field' mimics original hardware, producing a sharp image with flickering/interlacing artifacts. 'Single Field' applies a deinterlacing filter, which stabilizes the image but causes mild blurring.", - NULL, - "video", - { - { "single field", "Single Field" }, - { "double field", "Double Field" }, - { NULL, NULL }, - }, - "single field" - }, - { - "genesis_plus_gx_frameskip", - "Frameskip", - NULL, - "Skip frames to avoid audio buffer under-run (crackling). Improves performance at the expense of visual smoothness. 'Auto' skips frames when advised by the frontend. 'Manual' utilizes the 'Frameskip Threshold (%)' setting.", - NULL, - "video", - { - { "disabled", NULL }, - { "auto", "Auto" }, - { "manual", "Manual" }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_frameskip_threshold", - "Frameskip Threshold (%)", - NULL, - "When 'Frameskip' is set to 'Manual', specifies the audio buffer occupancy threshold (percentage) below which frames will be skipped. Higher values reduce the risk of crackling by causing frames to be dropped more frequently.", - NULL, - "video", - { - { "15", NULL }, - { "18", NULL }, - { "21", NULL }, - { "24", NULL }, - { "27", NULL }, - { "30", NULL }, - { "33", NULL }, - { "36", NULL }, - { "39", NULL }, - { "42", NULL }, - { "45", NULL }, - { "48", NULL }, - { "51", NULL }, - { "54", NULL }, - { "57", NULL }, - { "60", NULL }, - { NULL, NULL }, - }, - "33" - }, - { - "genesis_plus_gx_ym2413", - "Master System FM (YM2413)", - NULL, - "Enable emulation of the FM Sound Unit used by certain Sega Mark III/Master System games for enhanced audio output.", - NULL, - "audio", - { - { "auto", "Auto" }, - { "disabled", NULL }, - { "enabled", NULL }, - { NULL, NULL }, - }, - "auto" - }, -#ifdef HAVE_OPLL_CORE - { - "genesis_plus_gx_ym2413_core", - "Master System FM (YM2413) Core", - NULL, - "Select method used to emulate the FM Sound Unit of the Sega Mark III/Master System. 'MAME' option is fast, and runs full speed on most systems. 'Nuked' option is cycle accurate, very high quality, and has substantial CPU requirements.", - NULL, - "audio", - { - { "mame", "MAME" }, - { "nuked", "Nuked" }, - { NULL, NULL }, - }, - "mame" - }, -#endif - { - "genesis_plus_gx_ym2612", - "Mega Drive/Genesis FM", - NULL, -#ifdef HAVE_YM3438_CORE - "Select method used to emulate the FM synthesizer (main sound generator) of the Mega Drive/Genesis. 'MAME' options are fast, and run full speed on most systems. 'Nuked' options are cycle accurate, very high quality, and have substantial CPU requirements. The YM2612 chip is used by the original Model 1 Mega Drive/Genesis. The YM3438 is used in later Mega Drive/Genesis revisions.", -#else - "Select method used to emulate the FM synthesizer (main sound generator) of the Mega Drive/Genesis. The YM2612 chip is used by the original Model 1 Mega Drive/Genesis. The YM3438 is used in later Mega Drive/Genesis revisions.", -#endif - NULL, - "audio", - { - { "mame (ym2612)", "MAME (YM2612)" }, - { "mame (asic ym3438)", "MAME (ASIC YM3438)" }, - { "mame (enhanced ym3438)", "MAME (Enhanced YM3438)" }, -#ifdef HAVE_YM3438_CORE - { "nuked (ym2612)", "Nuked (YM2612)" }, - { "nuked (ym3438)", "Nuked (YM3438)" }, -#endif - { NULL, NULL }, - }, - "mame (ym2612)" - }, - { - "genesis_plus_gx_sound_output", - "Sound Output", - NULL, - "Select stereo or mono sound playback.", - NULL, - "audio", - { - { "stereo", "Stereo" }, - { "mono", "Mono" }, - { NULL, NULL }, - }, - "stereo" - }, - { - "genesis_plus_gx_audio_filter", - "Audio Filter", - NULL, - "Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Mega Drive/Genesis.", - NULL, - "audio", - { - { "disabled", NULL }, - { "low-pass", "Low-Pass" }, -#ifdef HAVE_EQ - { "EQ", NULL }, -#endif - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_lowpass_range", - "Low-Pass Filter %", - NULL, - "Specify the cut-off frequency of the audio low pass filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.", - NULL, - "audio", - { - { "5", NULL }, - { "10", NULL }, - { "15", NULL }, - { "20", NULL }, - { "25", NULL }, - { "30", NULL }, - { "35", NULL }, - { "40", NULL }, - { "45", NULL }, - { "50", NULL }, - { "55", NULL }, - { "60", NULL }, - { "65", NULL }, - { "70", NULL }, - { "75", NULL }, - { "80", NULL }, - { "85", NULL }, - { "90", NULL }, - { "95", NULL }, - { NULL, NULL }, - }, - "60" - }, - { - "genesis_plus_gx_psg_preamp", - "PSG Preamp Level", - NULL, - "Set the audio preamplifier level of the emulated SN76496 4-channel Programmable Sound Generator found in the SG-1000, Sega Mark III, Master System, Game Gear and Mega Drive/Genesis.", - NULL, - "audio", - { - { "0", NULL }, - { "5", NULL }, - { "10", NULL }, - { "15", NULL }, - { "20", NULL }, - { "25", NULL }, - { "30", NULL }, - { "35", NULL }, - { "40", NULL }, - { "45", NULL }, - { "50", NULL }, - { "55", NULL }, - { "60", NULL }, - { "65", NULL }, - { "70", NULL }, - { "75", NULL }, - { "80", NULL }, - { "85", NULL }, - { "90", NULL }, - { "95", NULL }, - { "100", NULL }, - { "105", NULL }, - { "110", NULL }, - { "115", NULL }, - { "120", NULL }, - { "125", NULL }, - { "130", NULL }, - { "135", NULL }, - { "140", NULL }, - { "145", NULL }, - { "150", NULL }, - { "155", NULL }, - { "160", NULL }, - { "165", NULL }, - { "170", NULL }, - { "175", NULL }, - { "180", NULL }, - { "185", NULL }, - { "190", NULL }, - { "195", NULL }, - { "200", NULL }, - { NULL, NULL }, - }, - "150" - }, - { - "genesis_plus_gx_fm_preamp", - "FM Preamp Level", - NULL, - "Set the audio preamplifier level of the emulated Mega Drive/Genesis FM sound synthesizer or Sega Mark III/Master System FM Sound Unit.", - NULL, - "audio", - { - { "0", NULL }, - { "5", NULL }, - { "10", NULL }, - { "15", NULL }, - { "20", NULL }, - { "25", NULL }, - { "30", NULL }, - { "35", NULL }, - { "40", NULL }, - { "45", NULL }, - { "50", NULL }, - { "55", NULL }, - { "60", NULL }, - { "65", NULL }, - { "70", NULL }, - { "75", NULL }, - { "80", NULL }, - { "85", NULL }, - { "90", NULL }, - { "95", NULL }, - { "100", NULL }, - { "105", NULL }, - { "110", NULL }, - { "115", NULL }, - { "120", NULL }, - { "125", NULL }, - { "130", NULL }, - { "135", NULL }, - { "140", NULL }, - { "145", NULL }, - { "150", NULL }, - { "155", NULL }, - { "160", NULL }, - { "165", NULL }, - { "170", NULL }, - { "175", NULL }, - { "180", NULL }, - { "185", NULL }, - { "190", NULL }, - { "195", NULL }, - { "200", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_cdda_volume", - "CD-DA Volume", - NULL, - "Adjust the mixing volume of the emulated CD audio playback output.", - NULL, - "audio", - { - { "0", NULL }, - { "5", NULL }, - { "10", NULL }, - { "15", NULL }, - { "20", NULL }, - { "25", NULL }, - { "30", NULL }, - { "35", NULL }, - { "40", NULL }, - { "45", NULL }, - { "50", NULL }, - { "55", NULL }, - { "60", NULL }, - { "65", NULL }, - { "70", NULL }, - { "75", NULL }, - { "80", NULL }, - { "85", NULL }, - { "90", NULL }, - { "95", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_pcm_volume", - "PCM Volume", - NULL, - "Adjust the mixing volume of the emulated Sega CD/Mega-CD RF5C164 PCM sound generator output.", - NULL, - "audio", - { - { "0", NULL }, - { "5", NULL }, - { "10", NULL }, - { "15", NULL }, - { "20", NULL }, - { "25", NULL }, - { "30", NULL }, - { "35", NULL }, - { "40", NULL }, - { "45", NULL }, - { "50", NULL }, - { "55", NULL }, - { "60", NULL }, - { "65", NULL }, - { "70", NULL }, - { "75", NULL }, - { "80", NULL }, - { "85", NULL }, - { "90", NULL }, - { "95", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, -#ifdef HAVE_EQ - { - "genesis_plus_gx_audio_eq_low", - "EQ Low", - NULL, - "Adjust the low range band of the internal audio equalizer.", - NULL, - "audio", - { - { "0", NULL }, - { "5", NULL }, - { "10", NULL }, - { "15", NULL }, - { "20", NULL }, - { "25", NULL }, - { "30", NULL }, - { "35", NULL }, - { "40", NULL }, - { "45", NULL }, - { "50", NULL }, - { "55", NULL }, - { "60", NULL }, - { "65", NULL }, - { "70", NULL }, - { "75", NULL }, - { "80", NULL }, - { "85", NULL }, - { "90", NULL }, - { "95", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_audio_eq_mid", - "EQ Mid", - NULL, - "Adjust the middle range band of the internal audio equalizer.", - NULL, - "audio", - { - { "0", NULL }, - { "5", NULL }, - { "10", NULL }, - { "15", NULL }, - { "20", NULL }, - { "25", NULL }, - { "30", NULL }, - { "35", NULL }, - { "40", NULL }, - { "45", NULL }, - { "50", NULL }, - { "55", NULL }, - { "60", NULL }, - { "65", NULL }, - { "70", NULL }, - { "75", NULL }, - { "80", NULL }, - { "85", NULL }, - { "90", NULL }, - { "95", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_audio_eq_high", - "EQ High", - NULL, - "Adjust the high range band of the internal audio equalizer.", - NULL, - "audio", - { - { "0", NULL }, - { "5", NULL }, - { "10", NULL }, - { "15", NULL }, - { "20", NULL }, - { "25", NULL }, - { "30", NULL }, - { "35", NULL }, - { "40", NULL }, - { "45", NULL }, - { "50", NULL }, - { "55", NULL }, - { "60", NULL }, - { "65", NULL }, - { "70", NULL }, - { "75", NULL }, - { "80", NULL }, - { "85", NULL }, - { "90", NULL }, - { "95", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, -#endif - { - "genesis_plus_gx_gun_input", - "Light Gun Input", - NULL, - "Use a mouse-controlled 'Light Gun' or 'Touchscreen' input.", - NULL, - "input", - { - { "lightgun", "Light Gun" }, - { "touchscreen", "Touchscreen" }, - { NULL, NULL }, - }, - "lightgun" - }, - { - "genesis_plus_gx_gun_cursor", - "Show Light Gun Crosshair", - NULL, - "Display light gun crosshairs when using the MD Menacer, MD Justifiers and MS Light Phaser input device types.", - NULL, - "input", - { - { "disabled", NULL }, - { "enabled", NULL }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_invert_mouse", - "Invert Mouse Y-Axis", - NULL, - "Inverts the Y-axis of the MD Mouse input device type.", - NULL, - "input", - { - { "disabled", NULL }, - { "enabled", NULL }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_no_sprite_limit", - "Remove Per-Line Sprite Limit", - NULL, - "Removes the original sprite-per-scanline hardware limit. This reduces flickering but can cause visual glitches, as some games exploit the hardware limit to generate special effects.", - NULL, - "hacks", - { - { "disabled", NULL }, - { "enabled", NULL }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_enhanced_vscroll", - "Enhanced per-tile vertical scroll", - NULL, - "Allows each individual cell to be scrolled vertically, instead of 16px 2-cell, by averaging out with the vscroll value of the neighbouring cell. This hack only applies to few games that use 2-cell vertical scroll mode.", - NULL, - "hacks", - { - { "disabled", NULL }, - { "enabled", NULL }, - { NULL, NULL }, - }, - "disabled" - }, - { - "genesis_plus_gx_enhanced_vscroll_limit", - "Enhanced per-tile vertical scroll limit", - NULL, - "Only when Enhanced per-tile vertical scroll is enabled. Adjusts the limit of the vertical scroll enhancement. When the vscroll difference between neighbouring tiles is bigger than this limit, the enhancement is disabled.", - NULL, - "hacks", - { - { "2", NULL }, - { "3", NULL }, - { "4", NULL }, - { "5", NULL }, - { "6", NULL }, - { "7", NULL }, - { "8", NULL }, - { "9", NULL }, - { "10", NULL }, - { "11", NULL }, - { "12", NULL }, - { "13", NULL }, - { "14", NULL }, - { "15", NULL }, - { "16", NULL }, - { NULL, NULL }, - }, - "8" - }, -#ifdef HAVE_OVERCLOCK - { - "genesis_plus_gx_overclock", - "CPU Speed", - NULL, - "Overclock the emulated CPU. Can reduce slowdown, but may cause glitches.", - NULL, - "hacks", - { - { "100", "100%" }, - { "125", "125%" }, - { "150", "150%" }, - { "175", "175%" }, - { "200", "200%" }, - { "225", "225%" }, - { "250", "250%" }, - { "275", "275%" }, - { "300", "300%" }, - { "325", "325%" }, - { "350", "350%" }, - { "375", "375%" }, - { "400", "400%" }, - { "425", "425%" }, - { "450", "450%" }, - { "475", "475%" }, - { "500", "500%" }, - { NULL, NULL }, - }, - "100%" - }, -#endif - { - "genesis_plus_gx_force_dtack", - "System Lock-Ups", - NULL, - "Emulate system lock-ups that occur on real hardware when performing illegal address access. This should only be disabled when playing certain demos and homebrew that rely on illegal behavior for correct operation.", - NULL, - "hacks", - { - { "enabled", NULL }, - { "disabled", NULL }, - { NULL, NULL }, - }, - "enabled" - }, - { - "genesis_plus_gx_addr_error", - "68K Address Error", - NULL, - "The Mega Drive/Genesis main CPU (Motorola 68000) generates an Address Error exception (crash) when attempting to perform unaligned memory access. Enabling this will simulate this behavior. It should only be disabled when playing ROM hacks, since these are typically developed using less accurate emulators and may rely on invalid RAM access for correct operation.", - NULL, - "hacks", - { - { "enabled", NULL }, - { "disabled", NULL }, - { NULL, NULL }, - }, - "enabled" - }, - { - "genesis_plus_gx_cd_latency", - "CD access time", - NULL, - "Simulate original CD hardware latency when initiating a read or seeking to a specific location on loaded disc. This is required by a few CD games that crash if CD data is available too soon and also fixes CD audio desync issues in some games. Disabling this can be useful with MSU-MD games as it makes CD audio tracks loops more seamless.", - NULL, - "hacks", - { - { "enabled", NULL }, - { "disabled", NULL }, - { NULL, NULL }, - }, - "enabled" - }, -#ifdef USE_PER_SOUND_CHANNELS_CONFIG - { - "genesis_plus_gx_show_advanced_audio_settings", - "Show Advanced Audio Volume Settings (Reopen menu)", - NULL, - "Enable configuration of low-level audio channel parameters. NOTE: Quick Menu must be toggled for this setting to take effect.", - NULL, - "channel_volume", - { - { "enabled", NULL }, - { "disabled", NULL }, - { NULL, NULL}, - }, - "disabled" - }, - { - "genesis_plus_gx_psg_channel_0_volume", - "PSG Tone Channel 0 Volume %", - NULL, - "Reduce the volume of the PSG Tone Channel 0.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_psg_channel_1_volume", - "PSG Tone Channel 1 Volume %", - NULL, - "Reduce the volume of the PSG Tone Channel 1.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_psg_channel_2_volume", - "PSG Tone Channel 2 Volume %", - NULL, - "Reduce the volume of the PSG Tone Channel 2.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_psg_channel_3_volume", - "PSG Noise Channel 3 Volume %", - NULL, - "Reduce the volume of the PSG Noise Channel 3.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_md_channel_0_volume", - "Mega Drive/Genesis FM Channel 0 Volume %", - NULL, - "Reduce the volume of the Mega Drive/Genesis FM Channel 0. Only works with MAME FM emulators.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_md_channel_1_volume", - "Mega Drive/Genesis FM Channel 1 Volume %", - NULL, - "Reduce the volume of the Mega Drive/Genesis FM Channel 1. Only works with MAME FM emulators.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_md_channel_2_volume", - "Mega Drive/Genesis FM Channel 2 Volume %", - NULL, - "Reduce the volume of the Mega Drive/Genesis FM Channel 2. Only works with MAME FM emulators.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_md_channel_3_volume", - "Mega Drive/Genesis FM Channel 3 Volume %", - NULL, - "Reduce the volume of the Mega Drive/Genesis FM Channel 3. Only works with MAME FM emulators.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_md_channel_4_volume", - "Mega Drive/Genesis FM Channel 4 Volume %", - NULL, - "Reduce the volume of the Mega Drive/Genesis FM Channel 4. Only works with MAME FM emulators.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_md_channel_5_volume", - "Mega Drive/Genesis FM Channel 5 Volume %", - NULL, - "Reduce the volume of the Mega Drive/Genesis FM Channel 5. Only works with MAME FM emulators.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_sms_fm_channel_0_volume", - "Master System FM (YM2413) Channel 0 Volume %", - NULL, - "Reduce the volume of the Master System FM Channel 0.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_sms_fm_channel_1_volume", - "Master System FM (YM2413) Channel 1 Volume %", - NULL, - "Reduce the volume of the Master System FM Channel 1.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_sms_fm_channel_2_volume", - "Master System FM (YM2413) Channel 2 Volume %", - NULL, - "Reduce the volume of the Master System FM Channel 2.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_sms_fm_channel_3_volume", - "Master System FM (YM2413) Channel 3 Volume %", - NULL, - "Reduce the volume of the Master System FM Channel 3.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_sms_fm_channel_4_volume", - "Master System FM (YM2413) Channel 4 Volume %", - NULL, - "Reduce the volume of the Master System FM Channel 4.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_sms_fm_channel_5_volume", - "Master System FM (YM2413) Channel 5 Volume %", - NULL, - "Reduce the volume of the Master System FM Channel 5.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_sms_fm_channel_6_volume", - "Master System FM (YM2413) Channel 6 Volume %", - NULL, - "Reduce the volume of the Master System FM Channel 6.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_sms_fm_channel_7_volume", - "Master System FM (YM2413) Channel 7 Volume %", - NULL, - "Reduce the volume of the Master System FM Channel 7.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, - { - "genesis_plus_gx_sms_fm_channel_8_volume", - "Master System FM (YM2413) Channel 8 Volume %", - NULL, - "Reduce the volume of the Master System FM Channel 8.", - NULL, - "channel_volume", - { - { "0", NULL }, - { "10", NULL }, - { "20", NULL }, - { "30", NULL }, - { "40", NULL }, - { "50", NULL }, - { "60", NULL }, - { "70", NULL }, - { "80", NULL }, - { "90", NULL }, - { "100", NULL }, - { NULL, NULL }, - }, - "100" - }, -#endif - { NULL, NULL, NULL, NULL, NULL, NULL, {{0}}, NULL }, -}; - -struct retro_core_options_v2 options_us = { - option_cats_us, - option_defs_us -}; - -/* - ******************************** - * Language Mapping - ******************************** -*/ - -#ifndef HAVE_NO_LANGEXTRA -struct retro_core_options_v2 *options_intl[RETRO_LANGUAGE_LAST] = { - &options_us, /* RETRO_LANGUAGE_ENGLISH */ - &options_ja, /* RETRO_LANGUAGE_JAPANESE */ - &options_fr, /* RETRO_LANGUAGE_FRENCH */ - &options_es, /* RETRO_LANGUAGE_SPANISH */ - &options_de, /* RETRO_LANGUAGE_GERMAN */ - &options_it, /* RETRO_LANGUAGE_ITALIAN */ - &options_nl, /* RETRO_LANGUAGE_DUTCH */ - &options_pt_br, /* RETRO_LANGUAGE_PORTUGUESE_BRAZIL */ - &options_pt_pt, /* RETRO_LANGUAGE_PORTUGUESE_PORTUGAL */ - &options_ru, /* RETRO_LANGUAGE_RUSSIAN */ - &options_ko, /* RETRO_LANGUAGE_KOREAN */ - &options_cht, /* RETRO_LANGUAGE_CHINESE_TRADITIONAL */ - &options_chs, /* RETRO_LANGUAGE_CHINESE_SIMPLIFIED */ - &options_eo, /* RETRO_LANGUAGE_ESPERANTO */ - &options_pl, /* RETRO_LANGUAGE_POLISH */ - &options_vn, /* RETRO_LANGUAGE_VIETNAMESE */ - &options_ar, /* RETRO_LANGUAGE_ARABIC */ - &options_el, /* RETRO_LANGUAGE_GREEK */ - &options_tr, /* RETRO_LANGUAGE_TURKISH */ - &options_sk, /* RETRO_LANGUAGE_SLOVAK */ - &options_fa, /* RETRO_LANGUAGE_PERSIAN */ - &options_he, /* RETRO_LANGUAGE_HEBREW */ - &options_ast, /* RETRO_LANGUAGE_ASTURIAN */ - &options_fi, /* RETRO_LANGUAGE_FINNISH */ - &options_id, /* RETRO_LANGUAGE_INDONESIAN */ - &options_sv, /* RETRO_LANGUAGE_SWEDISH */ - &options_uk, /* RETRO_LANGUAGE_UKRAINIAN */ - &options_cs, /* RETRO_LANGUAGE_CZECH */ - &options_val, /* RETRO_LANGUAGE_CATALAN_VALENCIA */ - &options_ca, /* RETRO_LANGUAGE_CATALAN */ - &options_en, /* RETRO_LANGUAGE_BRITISH_ENGLISH */ - &options_hu, /* RETRO_LANGUAGE_HUNGARIAN */ -}; -#endif - -/* - ******************************** - * Functions - ******************************** -*/ - -/* Handles configuration/setting of core options. - * Should be called as early as possible - ideally inside - * retro_set_environment(), and no later than retro_load_game() - * > We place the function body in the header to avoid the - * necessity of adding more .c files (i.e. want this to - * be as painless as possible for core devs) - */ - -INLINE void libretro_set_core_options(retro_environment_t environ_cb, - bool *categories_supported) -{ - unsigned version = 0; -#ifndef HAVE_NO_LANGEXTRA - unsigned language = 0; -#endif - - if (!environ_cb || !categories_supported) - return; - - *categories_supported = false; - - if (!environ_cb(RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION, &version)) - version = 0; - - if (version >= 2) - { -#ifndef HAVE_NO_LANGEXTRA - struct retro_core_options_v2_intl core_options_intl; - - core_options_intl.us = &options_us; - core_options_intl.local = NULL; - - if (environ_cb(RETRO_ENVIRONMENT_GET_LANGUAGE, &language) && - (language < RETRO_LANGUAGE_LAST) && (language != RETRO_LANGUAGE_ENGLISH)) - core_options_intl.local = options_intl[language]; - - *categories_supported = environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_V2_INTL, - &core_options_intl); -#else - *categories_supported = environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_V2, - &options_us); -#endif - } - else - { - size_t i, j; - size_t option_index = 0; - size_t num_options = 0; - struct retro_core_option_definition - *option_v1_defs_us = NULL; -#ifndef HAVE_NO_LANGEXTRA - size_t num_options_intl = 0; - struct retro_core_option_v2_definition - *option_defs_intl = NULL; - struct retro_core_option_definition - *option_v1_defs_intl = NULL; - struct retro_core_options_intl - core_options_v1_intl; -#endif - struct retro_variable *variables = NULL; - char **values_buf = NULL; - - /* Determine total number of options */ - while (true) - { - if (option_defs_us[num_options].key) - num_options++; - else - break; - } - - if (version >= 1) - { - /* Allocate US array */ - option_v1_defs_us = (struct retro_core_option_definition *) - calloc(num_options + 1, sizeof(struct retro_core_option_definition)); - - /* Copy parameters from option_defs_us array */ - for (i = 0; i < num_options; i++) - { - struct retro_core_option_v2_definition *option_def_us = &option_defs_us[i]; - struct retro_core_option_value *option_values = option_def_us->values; - struct retro_core_option_definition *option_v1_def_us = &option_v1_defs_us[i]; - struct retro_core_option_value *option_v1_values = option_v1_def_us->values; - - option_v1_def_us->key = option_def_us->key; - option_v1_def_us->desc = option_def_us->desc; - option_v1_def_us->info = option_def_us->info; - option_v1_def_us->default_value = option_def_us->default_value; - - /* Values must be copied individually... */ - while (option_values->value) - { - option_v1_values->value = option_values->value; - option_v1_values->label = option_values->label; - - option_values++; - option_v1_values++; - } - } - -#ifndef HAVE_NO_LANGEXTRA - if (environ_cb(RETRO_ENVIRONMENT_GET_LANGUAGE, &language) && - (language < RETRO_LANGUAGE_LAST) && (language != RETRO_LANGUAGE_ENGLISH) && - options_intl[language]) - option_defs_intl = options_intl[language]->definitions; - - if (option_defs_intl) - { - /* Determine number of intl options */ - while (true) - { - if (option_defs_intl[num_options_intl].key) - num_options_intl++; - else - break; - } - - /* Allocate intl array */ - option_v1_defs_intl = (struct retro_core_option_definition *) - calloc(num_options_intl + 1, sizeof(struct retro_core_option_definition)); - - /* Copy parameters from option_defs_intl array */ - for (i = 0; i < num_options_intl; i++) - { - struct retro_core_option_v2_definition *option_def_intl = &option_defs_intl[i]; - struct retro_core_option_value *option_values = option_def_intl->values; - struct retro_core_option_definition *option_v1_def_intl = &option_v1_defs_intl[i]; - struct retro_core_option_value *option_v1_values = option_v1_def_intl->values; - - option_v1_def_intl->key = option_def_intl->key; - option_v1_def_intl->desc = option_def_intl->desc; - option_v1_def_intl->info = option_def_intl->info; - option_v1_def_intl->default_value = option_def_intl->default_value; - - /* Values must be copied individually... */ - while (option_values->value) - { - option_v1_values->value = option_values->value; - option_v1_values->label = option_values->label; - - option_values++; - option_v1_values++; - } - } - } - - core_options_v1_intl.us = option_v1_defs_us; - core_options_v1_intl.local = option_v1_defs_intl; - - environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL, &core_options_v1_intl); -#else - environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS, option_v1_defs_us); -#endif - } - else - { - /* Allocate arrays */ - variables = (struct retro_variable *)calloc(num_options + 1, - sizeof(struct retro_variable)); - values_buf = (char **)calloc(num_options, sizeof(char *)); - - if (!variables || !values_buf) - goto error; - - /* Copy parameters from option_defs_us array */ - for (i = 0; i < num_options; i++) - { - const char *key = option_defs_us[i].key; - const char *desc = option_defs_us[i].desc; - const char *default_value = option_defs_us[i].default_value; - struct retro_core_option_value *values = option_defs_us[i].values; - size_t buf_len = 3; - size_t default_index = 0; - - values_buf[i] = NULL; - - /* Skip options that are irrelevant when using the - * old style core options interface */ - if (strcmp(key, "genesis_plus_gx_show_advanced_audio_settings") == 0) - continue; - - if (desc) - { - size_t num_values = 0; - - /* Determine number of values */ - while (true) - { - if (values[num_values].value) - { - /* Check if this is the default value */ - if (default_value) - if (strcmp(values[num_values].value, default_value) == 0) - default_index = num_values; - - buf_len += strlen(values[num_values].value); - num_values++; - } - else - break; - } - - /* Build values string */ - if (num_values > 0) - { - buf_len += num_values - 1; - buf_len += strlen(desc); - - values_buf[i] = (char *)calloc(buf_len, sizeof(char)); - if (!values_buf[i]) - goto error; - - strcpy(values_buf[i], desc); - strcat(values_buf[i], "; "); - - /* Default value goes first */ - strcat(values_buf[i], values[default_index].value); - - /* Add remaining values */ - for (j = 0; j < num_values; j++) - { - if (j != default_index) - { - strcat(values_buf[i], "|"); - strcat(values_buf[i], values[j].value); - } - } - } - } - - variables[option_index].key = key; - variables[option_index].value = values_buf[i]; - option_index++; - } - - /* Set variables */ - environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, variables); - } - -error: - /* Clean up */ - - if (option_v1_defs_us) - { - free(option_v1_defs_us); - option_v1_defs_us = NULL; - } - -#ifndef HAVE_NO_LANGEXTRA - if (option_v1_defs_intl) - { - free(option_v1_defs_intl); - option_v1_defs_intl = NULL; - } -#endif - - if (values_buf) - { - for (i = 0; i < num_options; i++) - { - if (values_buf[i]) - { - free(values_buf[i]); - values_buf[i] = NULL; - } - } - - free(values_buf); - values_buf = NULL; - } - - if (variables) - { - free(variables); - variables = NULL; - } - } -} - -#ifdef __cplusplus -} -#endif - -#endif +#ifndef LIBRETRO_CORE_OPTIONS_H__ +#define LIBRETRO_CORE_OPTIONS_H__ + +#include +#include + +#include +#include + +#ifndef HAVE_NO_LANGEXTRA +#include "libretro_core_options_intl.h" +#endif + +/* + ******************************** + * VERSION: 2.0 + ******************************** + * + * - 2.0: Add support for core options v2 interface + * - 1.3: Move translations to libretro_core_options_intl.h + * - libretro_core_options_intl.h includes BOM and utf-8 + * fix for MSVC 2010-2013 + * - Added HAVE_NO_LANGEXTRA flag to disable translations + * on platforms/compilers without BOM support + * - 1.2: Use core options v1 interface when + * RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION is >= 1 + * (previously required RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION == 1) + * - 1.1: Support generation of core options v0 retro_core_option_value + * arrays containing options with a single value + * - 1.0: First commit +*/ + +#ifdef __cplusplus +extern "C" { +#endif + +/* + ******************************** + * Core Definitions + ******************************** +*/ + +#if defined(M68K_OVERCLOCK_SHIFT) || defined(Z80_OVERCLOCK_SHIFT) +#define HAVE_OVERCLOCK +#define HAVE_EQ +#endif + +/* + ******************************** + * Core Option Definitions + ******************************** +*/ + +/* RETRO_LANGUAGE_ENGLISH */ + +/* Default language: + * - All other languages must include the same keys and values + * - Will be used as a fallback in the event that frontend language + * is not available + * - Will be used as a fallback for any missing entries in + * frontend language definition */ + +struct retro_core_option_v2_category option_cats_us[] = { + { + "system", + "System", + "Change base hardware selection, region, BIOS and Sega CD/Mega-CD save file settings." + }, + { + "video", + "Video", + "Change aspect ratio, display cropping, video filter and frame skipping settings." + }, + { + "audio", + "Audio", + "Change audio device settings." + }, + { + "input", + "Input", + "Change light gun and/or mouse input settings." + }, + { + "hacks", + "Emulation Hacks", + "Change processor overclocking and emulation accuracy settings that affect low-level performance and compatibility." + }, + { + "channel_volume", + "Advanced Channel Volume Settings", + "Change the volume of individual hardware audio channels." + }, + { NULL, NULL, NULL }, +}; + +struct retro_core_option_v2_definition option_defs_us[] = { + { + "genesis_plus_gx_system_hw", + "System Hardware", + NULL, + "Runs loaded content with a specific emulated console. 'Auto' will select the most appropriate system for the current game.", + NULL, + "system", + { + { "auto", "Auto" }, + { "sg-1000", "SG-1000" }, + { "sg-1000 II", "SG-1000 II" }, + { "sg-1000 II + ram ext.","SG-1000 II + RAM Ext."}, + { "mark-III", "Mark III" }, + { "master system", "Master System" }, + { "master system II", "Master System II" }, + { "game gear", "Game Gear" }, + { "mega drive / genesis", "Mega Drive/Genesis" }, + { NULL, NULL }, + }, + "auto" + }, + { + "genesis_plus_gx_region_detect", + "System Region", + NULL, + "Specify which region the system is from. For consoles other than the Game Gear, 'PAL' is 50 Hz, while 'NTSC' is 60 Hz. Games may run faster or slower than normal if the incorrect region is selected.", + NULL, + "system", + { + { "auto", "Auto" }, + { "ntsc-u", "NTSC-U" }, + { "pal", "PAL" }, + { "ntsc-j", "NTSC-J" }, + { NULL, NULL }, + }, + "auto" + }, + { + "genesis_plus_gx_vdp_mode", + "Force VDP Mode", + NULL, + "Overrides the VDP mode to force it to run at either 60Hz (NTSC) or 50Hz (PAL), regardless of system region.", + NULL, + "system", + { + { "auto", "Disabled" }, + { "60hz", "60Hz" }, + { "50hz", "50Hz" }, + { NULL, NULL }, + }, + "auto" + }, + { + "genesis_plus_gx_bios", + "System Boot ROM", + NULL, + "Use official BIOS/bootloader for emulated hardware, if present in RetroArch's system directory. Displays console-specific start-up sequence/animation, then runs loaded content.", + NULL, + "system", + { + { "disabled", NULL }, + { "enabled", NULL }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_system_bram", + "CD System BRAM (Requires Restart)", + NULL, + "When running Sega CD/Mega-CD content, specifies whether to share a single save file between all games from a specific region (Per-BIOS) or to create a separate save file for each game (Per-Game). Note that the Sega CD/Mega-CD has limited internal storage, sufficient only for a handful of titles. To avoid running out of space, the 'Per-Game' setting is recommended.", + NULL, + "system", + { + { "per bios", "Per-BIOS" }, + { "per game", "Per-Game" }, + { NULL, NULL }, + }, + "per bios" + }, + { + "genesis_plus_gx_cart_bram", + "CD Backup Cart BRAM (Requires Restart)", + NULL, + "When running Sega CD/Mega-CD content, specifies whether to share a single backup ram cart for all games (Per-Cart) or to create a separate backup ram cart for each game (Per-Game).", + NULL, + "system", + { + { "per cart", "Per-Cart" }, + { "per game", "Per-Game" }, + { NULL, NULL }, + }, + "per cart" + }, + { + "genesis_plus_gx_cart_size", + "CD Backup Cart BRAM Size (Requires Restart)", + NULL, + "Sets the backup ram cart size when running Sega CD/Mega-CD content. Useful when setting the backup ram cart to Per-Game to avoid multiple larger cart sizes.", + NULL, + "system", + { + { "disabled", "Disabled" }, + { "128k", "128Kbit" }, + { "256k", "256Kbit" }, + { "512k", "512Kbit" }, + { "1meg", "1Mbit" }, + { "2meg", "2Mbit" }, + { "4meg", "4Mbit" }, + { NULL, NULL }, + }, + "4meg" + }, + { + "genesis_plus_gx_add_on", + "CD add-on (MD mode) (Requires Restart)", + NULL, + "Specify which add-on to use for CD audio playback with supported Mega Drive/Genesis games.", + NULL, + "system", + { + { "auto", "Auto" }, + { "sega/mega cd", "Sega/Mega CD" }, + { "megasd", "MegaSD" }, + { "none", "None" }, + { NULL, NULL }, + }, + "auto" + }, + { + "genesis_plus_gx_lock_on", + "Cartridge Lock-On", + NULL, + "Lock-On Technology is a Mega Drive/Genesis feature that allowed an older game to connect to the pass-through port of a special cartridge for extended or altered gameplay. This option specifies which type of special 'lock-on' cartridge to emulate. A corresponding bios file must be present in RetroArch's system directory.", + NULL, + "system", + { + { "disabled", NULL }, + { "game genie", "Game Genie" }, + { "action replay (pro)", "Action Replay (Pro)" }, + { "sonic & knuckles", "Sonic & Knuckles" }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_aspect_ratio", + "Core-Provided Aspect Ratio", + NULL, + "Choose the preferred content aspect ratio. This will only apply when RetroArch's aspect ratio is set to 'Core provided' in the Video settings.", + NULL, + "video", + { + { "auto", "Auto" }, + { "NTSC PAR", NULL }, + { "PAL PAR", NULL }, + { "4:3", NULL }, + { "Uncorrected", NULL }, + }, + "auto" + }, + { + "genesis_plus_gx_overscan", + "Borders", + NULL, + "Enable this to display the overscan regions at the top/bottom and/or left/right of the screen. These would normally be hidden by the bezel around the edge of a standard-definition television.", + NULL, + "video", + { + { "disabled", NULL }, + { "top/bottom", "Top/Bottom" }, + { "left/right", "Left/Right" }, + { "full", "Full" }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_left_border", + "Hide Master System Side Borders", + NULL, + "Cuts off 8 pixels from either the left side of the screen, or both left and right sides when running Master System games.", + NULL, + "video", + { + { "disabled", NULL }, + { "left border", "Left Border Only" }, + { "left & right borders", "Left & Right Borders" }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_gg_extra", + "Game Gear Extended Screen", + NULL, + "Forces Game Gear titles to run in SMS mode, with an increased resolution of 256x192. May show additional content, but typically displays a border of corrupt/unwanted image data.", + NULL, + "video", + { + { "disabled", NULL }, + { "enabled", NULL }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_blargg_ntsc_filter", + "Blargg NTSC Filter", + NULL, + "Apply a video filter to mimic various NTSC TV signals.", + NULL, + "video", + { + { "disabled", NULL }, + { "monochrome", "Monochrome" }, + { "composite", "Composite" }, + { "svideo", "S-Video" }, + { "rgb", "RGB" }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_lcd_filter", + "LCD Ghosting Filter", + NULL, + "Apply an image 'ghosting' filter to mimic the display characteristics of the Game Gear and Genesis Nomad LCD panels.", + NULL, + "video", + { + { "disabled", NULL }, + { "enabled", NULL }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_render", + "Interlaced Mode 2 Output", + NULL, + "Interlaced Mode 2 allows the Mega Drive/Genesis to output a double height (high resolution) 320x448 image by drawing alternate scan lines each frame (this is used by Sonic the Hedgehog 2 and Combat Cars multiplayer modes). 'Double Field' mimics original hardware, producing a sharp image with flickering/interlacing artifacts. 'Single Field' applies a deinterlacing filter, which stabilizes the image but causes mild blurring.", + NULL, + "video", + { + { "single field", "Single Field" }, + { "double field", "Double Field" }, + { NULL, NULL }, + }, + "single field" + }, + { + "genesis_plus_gx_frameskip", + "Frameskip", + NULL, + "Skip frames to avoid audio buffer under-run (crackling). Improves performance at the expense of visual smoothness. 'Auto' skips frames when advised by the frontend. 'Manual' utilizes the 'Frameskip Threshold (%)' setting.", + NULL, + "video", + { + { "disabled", NULL }, + { "auto", "Auto" }, + { "manual", "Manual" }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_frameskip_threshold", + "Frameskip Threshold (%)", + NULL, + "When 'Frameskip' is set to 'Manual', specifies the audio buffer occupancy threshold (percentage) below which frames will be skipped. Higher values reduce the risk of crackling by causing frames to be dropped more frequently.", + NULL, + "video", + { + { "15", NULL }, + { "18", NULL }, + { "21", NULL }, + { "24", NULL }, + { "27", NULL }, + { "30", NULL }, + { "33", NULL }, + { "36", NULL }, + { "39", NULL }, + { "42", NULL }, + { "45", NULL }, + { "48", NULL }, + { "51", NULL }, + { "54", NULL }, + { "57", NULL }, + { "60", NULL }, + { NULL, NULL }, + }, + "33" + }, + { + "genesis_plus_gx_ym2413", + "Master System FM (YM2413)", + NULL, + "Enable emulation of the FM Sound Unit used by certain Sega Mark III/Master System games for enhanced audio output.", + NULL, + "audio", + { + { "auto", "Auto" }, + { "disabled", NULL }, + { "enabled", NULL }, + { NULL, NULL }, + }, + "auto" + }, +#ifdef HAVE_OPLL_CORE + { + "genesis_plus_gx_ym2413_core", + "Master System FM (YM2413) Core", + NULL, + "Select method used to emulate the FM Sound Unit of the Sega Mark III/Master System. 'MAME' option is fast, and runs full speed on most systems. 'Nuked' option is cycle accurate, very high quality, and has substantial CPU requirements.", + NULL, + "audio", + { + { "mame", "MAME" }, + { "nuked", "Nuked" }, + { NULL, NULL }, + }, + "mame" + }, +#endif + { + "genesis_plus_gx_ym2612", + "Mega Drive/Genesis FM", + NULL, +#ifdef HAVE_YM3438_CORE + "Select method used to emulate the FM synthesizer (main sound generator) of the Mega Drive/Genesis. 'MAME' options are fast, and run full speed on most systems. 'Nuked' options are cycle accurate, very high quality, and have substantial CPU requirements. The YM2612 chip is used by the original Model 1 Mega Drive/Genesis. The YM3438 is used in later Mega Drive/Genesis revisions.", +#else + "Select method used to emulate the FM synthesizer (main sound generator) of the Mega Drive/Genesis. The YM2612 chip is used by the original Model 1 Mega Drive/Genesis. The YM3438 is used in later Mega Drive/Genesis revisions.", +#endif + NULL, + "audio", + { + { "mame (ym2612)", "MAME (YM2612)" }, + { "mame (asic ym3438)", "MAME (ASIC YM3438)" }, + { "mame (enhanced ym3438)", "MAME (Enhanced YM3438)" }, +#ifdef HAVE_YM3438_CORE + { "nuked (ym2612)", "Nuked (YM2612)" }, + { "nuked (ym3438)", "Nuked (YM3438)" }, +#endif + { NULL, NULL }, + }, + "mame (ym2612)" + }, + { + "genesis_plus_gx_sound_output", + "Sound Output", + NULL, + "Select stereo or mono sound playback.", + NULL, + "audio", + { + { "stereo", "Stereo" }, + { "mono", "Mono" }, + { NULL, NULL }, + }, + "stereo" + }, + { + "genesis_plus_gx_audio_filter", + "Audio Filter", + NULL, + "Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Mega Drive/Genesis.", + NULL, + "audio", + { + { "disabled", NULL }, + { "low-pass", "Low-Pass" }, +#ifdef HAVE_EQ + { "EQ", NULL }, +#endif + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_lowpass_range", + "Low-Pass Filter %", + NULL, + "Specify the cut-off frequency of the audio low pass filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.", + NULL, + "audio", + { + { "5", NULL }, + { "10", NULL }, + { "15", NULL }, + { "20", NULL }, + { "25", NULL }, + { "30", NULL }, + { "35", NULL }, + { "40", NULL }, + { "45", NULL }, + { "50", NULL }, + { "55", NULL }, + { "60", NULL }, + { "65", NULL }, + { "70", NULL }, + { "75", NULL }, + { "80", NULL }, + { "85", NULL }, + { "90", NULL }, + { "95", NULL }, + { NULL, NULL }, + }, + "60" + }, + { + "genesis_plus_gx_psg_preamp", + "PSG Preamp Level", + NULL, + "Set the audio preamplifier level of the emulated SN76496 4-channel Programmable Sound Generator found in the SG-1000, Sega Mark III, Master System, Game Gear and Mega Drive/Genesis.", + NULL, + "audio", + { + { "0", NULL }, + { "5", NULL }, + { "10", NULL }, + { "15", NULL }, + { "20", NULL }, + { "25", NULL }, + { "30", NULL }, + { "35", NULL }, + { "40", NULL }, + { "45", NULL }, + { "50", NULL }, + { "55", NULL }, + { "60", NULL }, + { "65", NULL }, + { "70", NULL }, + { "75", NULL }, + { "80", NULL }, + { "85", NULL }, + { "90", NULL }, + { "95", NULL }, + { "100", NULL }, + { "105", NULL }, + { "110", NULL }, + { "115", NULL }, + { "120", NULL }, + { "125", NULL }, + { "130", NULL }, + { "135", NULL }, + { "140", NULL }, + { "145", NULL }, + { "150", NULL }, + { "155", NULL }, + { "160", NULL }, + { "165", NULL }, + { "170", NULL }, + { "175", NULL }, + { "180", NULL }, + { "185", NULL }, + { "190", NULL }, + { "195", NULL }, + { "200", NULL }, + { NULL, NULL }, + }, + "150" + }, + { + "genesis_plus_gx_fm_preamp", + "FM Preamp Level", + NULL, + "Set the audio preamplifier level of the emulated Mega Drive/Genesis FM sound synthesizer or Sega Mark III/Master System FM Sound Unit.", + NULL, + "audio", + { + { "0", NULL }, + { "5", NULL }, + { "10", NULL }, + { "15", NULL }, + { "20", NULL }, + { "25", NULL }, + { "30", NULL }, + { "35", NULL }, + { "40", NULL }, + { "45", NULL }, + { "50", NULL }, + { "55", NULL }, + { "60", NULL }, + { "65", NULL }, + { "70", NULL }, + { "75", NULL }, + { "80", NULL }, + { "85", NULL }, + { "90", NULL }, + { "95", NULL }, + { "100", NULL }, + { "105", NULL }, + { "110", NULL }, + { "115", NULL }, + { "120", NULL }, + { "125", NULL }, + { "130", NULL }, + { "135", NULL }, + { "140", NULL }, + { "145", NULL }, + { "150", NULL }, + { "155", NULL }, + { "160", NULL }, + { "165", NULL }, + { "170", NULL }, + { "175", NULL }, + { "180", NULL }, + { "185", NULL }, + { "190", NULL }, + { "195", NULL }, + { "200", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_cdda_volume", + "CD-DA Volume", + NULL, + "Adjust the mixing volume of the emulated CD audio playback output.", + NULL, + "audio", + { + { "0", NULL }, + { "5", NULL }, + { "10", NULL }, + { "15", NULL }, + { "20", NULL }, + { "25", NULL }, + { "30", NULL }, + { "35", NULL }, + { "40", NULL }, + { "45", NULL }, + { "50", NULL }, + { "55", NULL }, + { "60", NULL }, + { "65", NULL }, + { "70", NULL }, + { "75", NULL }, + { "80", NULL }, + { "85", NULL }, + { "90", NULL }, + { "95", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_pcm_volume", + "PCM Volume", + NULL, + "Adjust the mixing volume of the emulated Sega CD/Mega-CD RF5C164 PCM sound generator output.", + NULL, + "audio", + { + { "0", NULL }, + { "5", NULL }, + { "10", NULL }, + { "15", NULL }, + { "20", NULL }, + { "25", NULL }, + { "30", NULL }, + { "35", NULL }, + { "40", NULL }, + { "45", NULL }, + { "50", NULL }, + { "55", NULL }, + { "60", NULL }, + { "65", NULL }, + { "70", NULL }, + { "75", NULL }, + { "80", NULL }, + { "85", NULL }, + { "90", NULL }, + { "95", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, +#ifdef HAVE_EQ + { + "genesis_plus_gx_audio_eq_low", + "EQ Low", + NULL, + "Adjust the low range band of the internal audio equalizer.", + NULL, + "audio", + { + { "0", NULL }, + { "5", NULL }, + { "10", NULL }, + { "15", NULL }, + { "20", NULL }, + { "25", NULL }, + { "30", NULL }, + { "35", NULL }, + { "40", NULL }, + { "45", NULL }, + { "50", NULL }, + { "55", NULL }, + { "60", NULL }, + { "65", NULL }, + { "70", NULL }, + { "75", NULL }, + { "80", NULL }, + { "85", NULL }, + { "90", NULL }, + { "95", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_audio_eq_mid", + "EQ Mid", + NULL, + "Adjust the middle range band of the internal audio equalizer.", + NULL, + "audio", + { + { "0", NULL }, + { "5", NULL }, + { "10", NULL }, + { "15", NULL }, + { "20", NULL }, + { "25", NULL }, + { "30", NULL }, + { "35", NULL }, + { "40", NULL }, + { "45", NULL }, + { "50", NULL }, + { "55", NULL }, + { "60", NULL }, + { "65", NULL }, + { "70", NULL }, + { "75", NULL }, + { "80", NULL }, + { "85", NULL }, + { "90", NULL }, + { "95", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_audio_eq_high", + "EQ High", + NULL, + "Adjust the high range band of the internal audio equalizer.", + NULL, + "audio", + { + { "0", NULL }, + { "5", NULL }, + { "10", NULL }, + { "15", NULL }, + { "20", NULL }, + { "25", NULL }, + { "30", NULL }, + { "35", NULL }, + { "40", NULL }, + { "45", NULL }, + { "50", NULL }, + { "55", NULL }, + { "60", NULL }, + { "65", NULL }, + { "70", NULL }, + { "75", NULL }, + { "80", NULL }, + { "85", NULL }, + { "90", NULL }, + { "95", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, +#endif + { + "genesis_plus_gx_gun_input", + "Light Gun Input", + NULL, + "Use a mouse-controlled 'Light Gun' or 'Touchscreen' input.", + NULL, + "input", + { + { "lightgun", "Light Gun" }, + { "touchscreen", "Touchscreen" }, + { NULL, NULL }, + }, + "lightgun" + }, + { + "genesis_plus_gx_gun_cursor", + "Show Light Gun Crosshair", + NULL, + "Display light gun crosshairs when using the MD Menacer, MD Justifiers and MS Light Phaser input device types.", + NULL, + "input", + { + { "disabled", NULL }, + { "enabled", NULL }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_invert_mouse", + "Invert Mouse Y-Axis", + NULL, + "Inverts the Y-axis of the MD Mouse input device type.", + NULL, + "input", + { + { "disabled", NULL }, + { "enabled", NULL }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_no_sprite_limit", + "Remove Per-Line Sprite Limit", + NULL, + "Removes the original sprite-per-scanline hardware limit. This reduces flickering but can cause visual glitches, as some games exploit the hardware limit to generate special effects.", + NULL, + "hacks", + { + { "disabled", NULL }, + { "enabled", NULL }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_enhanced_vscroll", + "Enhanced per-tile vertical scroll", + NULL, + "Allows each individual cell to be scrolled vertically, instead of 16px 2-cell, by averaging out with the vscroll value of the neighbouring cell. This hack only applies to few games that use 2-cell vertical scroll mode.", + NULL, + "hacks", + { + { "disabled", NULL }, + { "enabled", NULL }, + { NULL, NULL }, + }, + "disabled" + }, + { + "genesis_plus_gx_enhanced_vscroll_limit", + "Enhanced per-tile vertical scroll limit", + NULL, + "Only when Enhanced per-tile vertical scroll is enabled. Adjusts the limit of the vertical scroll enhancement. When the vscroll difference between neighbouring tiles is bigger than this limit, the enhancement is disabled.", + NULL, + "hacks", + { + { "2", NULL }, + { "3", NULL }, + { "4", NULL }, + { "5", NULL }, + { "6", NULL }, + { "7", NULL }, + { "8", NULL }, + { "9", NULL }, + { "10", NULL }, + { "11", NULL }, + { "12", NULL }, + { "13", NULL }, + { "14", NULL }, + { "15", NULL }, + { "16", NULL }, + { NULL, NULL }, + }, + "8" + }, +#ifdef HAVE_OVERCLOCK + { + "genesis_plus_gx_overclock", + "CPU Speed", + NULL, + "Overclock the emulated CPU. Can reduce slowdown, but may cause glitches.", + NULL, + "hacks", + { + { "100", "100%" }, + { "125", "125%" }, + { "150", "150%" }, + { "175", "175%" }, + { "200", "200%" }, + { "225", "225%" }, + { "250", "250%" }, + { "275", "275%" }, + { "300", "300%" }, + { "325", "325%" }, + { "350", "350%" }, + { "375", "375%" }, + { "400", "400%" }, + { "425", "425%" }, + { "450", "450%" }, + { "475", "475%" }, + { "500", "500%" }, + { NULL, NULL }, + }, + "100%" + }, +#endif + { + "genesis_plus_gx_force_dtack", + "System Lock-Ups", + NULL, + "Emulate system lock-ups that occur on real hardware when performing illegal address access. This should only be disabled when playing certain demos and homebrew that rely on illegal behavior for correct operation.", + NULL, + "hacks", + { + { "enabled", NULL }, + { "disabled", NULL }, + { NULL, NULL }, + }, + "enabled" + }, + { + "genesis_plus_gx_addr_error", + "68K Address Error", + NULL, + "The Mega Drive/Genesis main CPU (Motorola 68000) generates an Address Error exception (crash) when attempting to perform unaligned memory access. Enabling this will simulate this behavior. It should only be disabled when playing ROM hacks, since these are typically developed using less accurate emulators and may rely on invalid RAM access for correct operation.", + NULL, + "hacks", + { + { "enabled", NULL }, + { "disabled", NULL }, + { NULL, NULL }, + }, + "enabled" + }, + { + "genesis_plus_gx_cd_latency", + "CD access time", + NULL, + "Simulate original CD hardware latency when initiating a read or seeking to a specific location on loaded disc. This is required by a few CD games that crash if CD data is available too soon and also fixes CD audio desync issues in some games. Disabling this can be useful with MSU-MD games as it makes CD audio tracks loops more seamless.", + NULL, + "hacks", + { + { "enabled", NULL }, + { "disabled", NULL }, + { NULL, NULL }, + }, + "enabled" + }, +#ifdef USE_PER_SOUND_CHANNELS_CONFIG + { + "genesis_plus_gx_show_advanced_audio_settings", + "Show Advanced Audio Volume Settings (Reopen menu)", + NULL, + "Enable configuration of low-level audio channel parameters. NOTE: Quick Menu must be toggled for this setting to take effect.", + NULL, + "channel_volume", + { + { "enabled", NULL }, + { "disabled", NULL }, + { NULL, NULL}, + }, + "disabled" + }, + { + "genesis_plus_gx_psg_channel_0_volume", + "PSG Tone Channel 0 Volume %", + NULL, + "Reduce the volume of the PSG Tone Channel 0.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_psg_channel_1_volume", + "PSG Tone Channel 1 Volume %", + NULL, + "Reduce the volume of the PSG Tone Channel 1.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_psg_channel_2_volume", + "PSG Tone Channel 2 Volume %", + NULL, + "Reduce the volume of the PSG Tone Channel 2.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_psg_channel_3_volume", + "PSG Noise Channel 3 Volume %", + NULL, + "Reduce the volume of the PSG Noise Channel 3.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_md_channel_0_volume", + "Mega Drive/Genesis FM Channel 0 Volume %", + NULL, + "Reduce the volume of the Mega Drive/Genesis FM Channel 0. Only works with MAME FM emulators.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_md_channel_1_volume", + "Mega Drive/Genesis FM Channel 1 Volume %", + NULL, + "Reduce the volume of the Mega Drive/Genesis FM Channel 1. Only works with MAME FM emulators.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_md_channel_2_volume", + "Mega Drive/Genesis FM Channel 2 Volume %", + NULL, + "Reduce the volume of the Mega Drive/Genesis FM Channel 2. Only works with MAME FM emulators.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_md_channel_3_volume", + "Mega Drive/Genesis FM Channel 3 Volume %", + NULL, + "Reduce the volume of the Mega Drive/Genesis FM Channel 3. Only works with MAME FM emulators.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_md_channel_4_volume", + "Mega Drive/Genesis FM Channel 4 Volume %", + NULL, + "Reduce the volume of the Mega Drive/Genesis FM Channel 4. Only works with MAME FM emulators.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_md_channel_5_volume", + "Mega Drive/Genesis FM Channel 5 Volume %", + NULL, + "Reduce the volume of the Mega Drive/Genesis FM Channel 5. Only works with MAME FM emulators.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_sms_fm_channel_0_volume", + "Master System FM (YM2413) Channel 0 Volume %", + NULL, + "Reduce the volume of the Master System FM Channel 0.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_sms_fm_channel_1_volume", + "Master System FM (YM2413) Channel 1 Volume %", + NULL, + "Reduce the volume of the Master System FM Channel 1.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_sms_fm_channel_2_volume", + "Master System FM (YM2413) Channel 2 Volume %", + NULL, + "Reduce the volume of the Master System FM Channel 2.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_sms_fm_channel_3_volume", + "Master System FM (YM2413) Channel 3 Volume %", + NULL, + "Reduce the volume of the Master System FM Channel 3.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_sms_fm_channel_4_volume", + "Master System FM (YM2413) Channel 4 Volume %", + NULL, + "Reduce the volume of the Master System FM Channel 4.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_sms_fm_channel_5_volume", + "Master System FM (YM2413) Channel 5 Volume %", + NULL, + "Reduce the volume of the Master System FM Channel 5.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_sms_fm_channel_6_volume", + "Master System FM (YM2413) Channel 6 Volume %", + NULL, + "Reduce the volume of the Master System FM Channel 6.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_sms_fm_channel_7_volume", + "Master System FM (YM2413) Channel 7 Volume %", + NULL, + "Reduce the volume of the Master System FM Channel 7.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, + { + "genesis_plus_gx_sms_fm_channel_8_volume", + "Master System FM (YM2413) Channel 8 Volume %", + NULL, + "Reduce the volume of the Master System FM Channel 8.", + NULL, + "channel_volume", + { + { "0", NULL }, + { "10", NULL }, + { "20", NULL }, + { "30", NULL }, + { "40", NULL }, + { "50", NULL }, + { "60", NULL }, + { "70", NULL }, + { "80", NULL }, + { "90", NULL }, + { "100", NULL }, + { NULL, NULL }, + }, + "100" + }, +#endif + { NULL, NULL, NULL, NULL, NULL, NULL, {{0}}, NULL }, +}; + +struct retro_core_options_v2 options_us = { + option_cats_us, + option_defs_us +}; + +/* + ******************************** + * Language Mapping + ******************************** +*/ + +#ifndef HAVE_NO_LANGEXTRA +struct retro_core_options_v2 *options_intl[RETRO_LANGUAGE_LAST] = { + &options_us, /* RETRO_LANGUAGE_ENGLISH */ + &options_ja, /* RETRO_LANGUAGE_JAPANESE */ + &options_fr, /* RETRO_LANGUAGE_FRENCH */ + &options_es, /* RETRO_LANGUAGE_SPANISH */ + &options_de, /* RETRO_LANGUAGE_GERMAN */ + &options_it, /* RETRO_LANGUAGE_ITALIAN */ + &options_nl, /* RETRO_LANGUAGE_DUTCH */ + &options_pt_br, /* RETRO_LANGUAGE_PORTUGUESE_BRAZIL */ + &options_pt_pt, /* RETRO_LANGUAGE_PORTUGUESE_PORTUGAL */ + &options_ru, /* RETRO_LANGUAGE_RUSSIAN */ + &options_ko, /* RETRO_LANGUAGE_KOREAN */ + &options_cht, /* RETRO_LANGUAGE_CHINESE_TRADITIONAL */ + &options_chs, /* RETRO_LANGUAGE_CHINESE_SIMPLIFIED */ + &options_eo, /* RETRO_LANGUAGE_ESPERANTO */ + &options_pl, /* RETRO_LANGUAGE_POLISH */ + &options_vn, /* RETRO_LANGUAGE_VIETNAMESE */ + &options_ar, /* RETRO_LANGUAGE_ARABIC */ + &options_el, /* RETRO_LANGUAGE_GREEK */ + &options_tr, /* RETRO_LANGUAGE_TURKISH */ + &options_sk, /* RETRO_LANGUAGE_SLOVAK */ + &options_fa, /* RETRO_LANGUAGE_PERSIAN */ + &options_he, /* RETRO_LANGUAGE_HEBREW */ + &options_ast, /* RETRO_LANGUAGE_ASTURIAN */ + &options_fi, /* RETRO_LANGUAGE_FINNISH */ + &options_id, /* RETRO_LANGUAGE_INDONESIAN */ + &options_sv, /* RETRO_LANGUAGE_SWEDISH */ + &options_uk, /* RETRO_LANGUAGE_UKRAINIAN */ + &options_cs, /* RETRO_LANGUAGE_CZECH */ + &options_val, /* RETRO_LANGUAGE_CATALAN_VALENCIA */ + &options_ca, /* RETRO_LANGUAGE_CATALAN */ + &options_en, /* RETRO_LANGUAGE_BRITISH_ENGLISH */ + &options_hu, /* RETRO_LANGUAGE_HUNGARIAN */ +}; +#endif + +/* + ******************************** + * Functions + ******************************** +*/ + +/* Handles configuration/setting of core options. + * Should be called as early as possible - ideally inside + * retro_set_environment(), and no later than retro_load_game() + * > We place the function body in the header to avoid the + * necessity of adding more .c files (i.e. want this to + * be as painless as possible for core devs) + */ + +INLINE void libretro_set_core_options(retro_environment_t environ_cb, + bool *categories_supported) +{ + unsigned version = 0; +#ifndef HAVE_NO_LANGEXTRA + unsigned language = 0; +#endif + + if (!environ_cb || !categories_supported) + return; + + *categories_supported = false; + + if (!environ_cb(RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION, &version)) + version = 0; + + if (version >= 2) + { +#ifndef HAVE_NO_LANGEXTRA + struct retro_core_options_v2_intl core_options_intl; + + core_options_intl.us = &options_us; + core_options_intl.local = NULL; + + if (environ_cb(RETRO_ENVIRONMENT_GET_LANGUAGE, &language) && + (language < RETRO_LANGUAGE_LAST) && (language != RETRO_LANGUAGE_ENGLISH)) + core_options_intl.local = options_intl[language]; + + *categories_supported = environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_V2_INTL, + &core_options_intl); +#else + *categories_supported = environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_V2, + &options_us); +#endif + } + else + { + size_t i, j; + size_t option_index = 0; + size_t num_options = 0; + struct retro_core_option_definition + *option_v1_defs_us = NULL; +#ifndef HAVE_NO_LANGEXTRA + size_t num_options_intl = 0; + struct retro_core_option_v2_definition + *option_defs_intl = NULL; + struct retro_core_option_definition + *option_v1_defs_intl = NULL; + struct retro_core_options_intl + core_options_v1_intl; +#endif + struct retro_variable *variables = NULL; + char **values_buf = NULL; + + /* Determine total number of options */ + while (true) + { + if (option_defs_us[num_options].key) + num_options++; + else + break; + } + + if (version >= 1) + { + /* Allocate US array */ + option_v1_defs_us = (struct retro_core_option_definition *) + calloc(num_options + 1, sizeof(struct retro_core_option_definition)); + + /* Copy parameters from option_defs_us array */ + for (i = 0; i < num_options; i++) + { + struct retro_core_option_v2_definition *option_def_us = &option_defs_us[i]; + struct retro_core_option_value *option_values = option_def_us->values; + struct retro_core_option_definition *option_v1_def_us = &option_v1_defs_us[i]; + struct retro_core_option_value *option_v1_values = option_v1_def_us->values; + + option_v1_def_us->key = option_def_us->key; + option_v1_def_us->desc = option_def_us->desc; + option_v1_def_us->info = option_def_us->info; + option_v1_def_us->default_value = option_def_us->default_value; + + /* Values must be copied individually... */ + while (option_values->value) + { + option_v1_values->value = option_values->value; + option_v1_values->label = option_values->label; + + option_values++; + option_v1_values++; + } + } + +#ifndef HAVE_NO_LANGEXTRA + if (environ_cb(RETRO_ENVIRONMENT_GET_LANGUAGE, &language) && + (language < RETRO_LANGUAGE_LAST) && (language != RETRO_LANGUAGE_ENGLISH) && + options_intl[language]) + option_defs_intl = options_intl[language]->definitions; + + if (option_defs_intl) + { + /* Determine number of intl options */ + while (true) + { + if (option_defs_intl[num_options_intl].key) + num_options_intl++; + else + break; + } + + /* Allocate intl array */ + option_v1_defs_intl = (struct retro_core_option_definition *) + calloc(num_options_intl + 1, sizeof(struct retro_core_option_definition)); + + /* Copy parameters from option_defs_intl array */ + for (i = 0; i < num_options_intl; i++) + { + struct retro_core_option_v2_definition *option_def_intl = &option_defs_intl[i]; + struct retro_core_option_value *option_values = option_def_intl->values; + struct retro_core_option_definition *option_v1_def_intl = &option_v1_defs_intl[i]; + struct retro_core_option_value *option_v1_values = option_v1_def_intl->values; + + option_v1_def_intl->key = option_def_intl->key; + option_v1_def_intl->desc = option_def_intl->desc; + option_v1_def_intl->info = option_def_intl->info; + option_v1_def_intl->default_value = option_def_intl->default_value; + + /* Values must be copied individually... */ + while (option_values->value) + { + option_v1_values->value = option_values->value; + option_v1_values->label = option_values->label; + + option_values++; + option_v1_values++; + } + } + } + + core_options_v1_intl.us = option_v1_defs_us; + core_options_v1_intl.local = option_v1_defs_intl; + + environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL, &core_options_v1_intl); +#else + environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS, option_v1_defs_us); +#endif + } + else + { + /* Allocate arrays */ + variables = (struct retro_variable *)calloc(num_options + 1, + sizeof(struct retro_variable)); + values_buf = (char **)calloc(num_options, sizeof(char *)); + + if (!variables || !values_buf) + goto error; + + /* Copy parameters from option_defs_us array */ + for (i = 0; i < num_options; i++) + { + const char *key = option_defs_us[i].key; + const char *desc = option_defs_us[i].desc; + const char *default_value = option_defs_us[i].default_value; + struct retro_core_option_value *values = option_defs_us[i].values; + size_t buf_len = 3; + size_t default_index = 0; + + values_buf[i] = NULL; + + /* Skip options that are irrelevant when using the + * old style core options interface */ + if (strcmp(key, "genesis_plus_gx_show_advanced_audio_settings") == 0) + continue; + + if (desc) + { + size_t num_values = 0; + + /* Determine number of values */ + while (true) + { + if (values[num_values].value) + { + /* Check if this is the default value */ + if (default_value) + if (strcmp(values[num_values].value, default_value) == 0) + default_index = num_values; + + buf_len += strlen(values[num_values].value); + num_values++; + } + else + break; + } + + /* Build values string */ + if (num_values > 0) + { + buf_len += num_values - 1; + buf_len += strlen(desc); + + values_buf[i] = (char *)calloc(buf_len, sizeof(char)); + if (!values_buf[i]) + goto error; + + strcpy(values_buf[i], desc); + strcat(values_buf[i], "; "); + + /* Default value goes first */ + strcat(values_buf[i], values[default_index].value); + + /* Add remaining values */ + for (j = 0; j < num_values; j++) + { + if (j != default_index) + { + strcat(values_buf[i], "|"); + strcat(values_buf[i], values[j].value); + } + } + } + } + + variables[option_index].key = key; + variables[option_index].value = values_buf[i]; + option_index++; + } + + /* Set variables */ + environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, variables); + } + +error: + /* Clean up */ + + if (option_v1_defs_us) + { + free(option_v1_defs_us); + option_v1_defs_us = NULL; + } + +#ifndef HAVE_NO_LANGEXTRA + if (option_v1_defs_intl) + { + free(option_v1_defs_intl); + option_v1_defs_intl = NULL; + } +#endif + + if (values_buf) + { + for (i = 0; i < num_options; i++) + { + if (values_buf[i]) + { + free(values_buf[i]); + values_buf[i] = NULL; + } + } + + free(values_buf); + values_buf = NULL; + } + + if (variables) + { + free(variables); + variables = NULL; + } + } +} + +#ifdef __cplusplus +} +#endif + +#endif