diff --git a/libretro/jni/Android.mk b/libretro/jni/Android.mk index 7deea1c..3401c10 100644 --- a/libretro/jni/Android.mk +++ b/libretro/jni/Android.mk @@ -27,13 +27,6 @@ CORE_DIR := ../.. include ../Makefile.common -$(CORE_DIR)/libretro/%_boot.c: $(CORE_DIR)/BootROMs/prebuilt/%_boot.bin - echo "/* AUTO-GENERATED */" > $@ - echo "const unsigned char $(notdir $(@:%.c=%))[] = {" >> $@ - hexdump -v -e '/1 "0x%02x, "' $< >> $@ - echo "};" >> $@ - echo "const unsigned $(notdir $(@:%.c=%))_length = sizeof($(notdir $(@:%.c=%)));" >> $@ - LOCAL_SRC_FILES := $(SOURCES_CXX) $(SOURCES_C) LOCAL_CFLAGS += -DINLINE=inline -DHAVE_STDINT_H -DHAVE_INTTYPES_H -D__LIBRETRO__ -DNDEBUG -D_USE_MATH_DEFINES -DGB_INTERNAL -std=c99 -I$(CORE_DIR) -DSAMEBOY_CORE_VERSION=\"$(VERSION)\" diff --git a/libretro/libretro.c b/libretro/libretro.c index 3ab408c..dfddc6a 100644 --- a/libretro/libretro.c +++ b/libretro/libretro.c @@ -31,7 +31,14 @@ static const char slash = '/'; #define VIDEO_WIDTH 160 #define VIDEO_HEIGHT 144 -#define VIDEO_PIXELS VIDEO_WIDTH * VIDEO_HEIGHT +#define VIDEO_PIXELS (VIDEO_WIDTH * VIDEO_HEIGHT) + +#define RETRO_MEMORY_GAMEBOY_1_SRAM ((1 << 8) | RETRO_MEMORY_SAVE_RAM) +#define RETRO_MEMORY_GAMEBOY_1_RTC ((2 << 8) | RETRO_MEMORY_RTC) +#define RETRO_MEMORY_GAMEBOY_2_SRAM ((3 << 8) | RETRO_MEMORY_SAVE_RAM) +#define RETRO_MEMORY_GAMEBOY_2_RTC ((3 << 8) | RETRO_MEMORY_RTC) + +#define RETRO_GAME_TYPE_GAMEBOY_LINK_2P 0x101 char battery_save_path[512]; char symbols_path[512]; @@ -43,9 +50,27 @@ enum model { MODEL_AUTO }; -static enum model model = MODEL_AUTO; +enum screen_layout { + LAYOUT_TOP_DOWN, + LAYOUT_LEFT_RIGHT +}; + +enum audio_out { + GB_1, + GB_2 +}; + +enum mode{ + MODE_SINGLE_GAME, + MODE_SINGLE_GAME_DUAL, + MODE_DUAL_GAME +}; + +static enum model model[2]; static enum model auto_model = MODEL_CGB; -static uint32_t *frame_buf; + +static uint32_t *frame_buf = NULL; +static uint32_t *frame_buf_copy = NULL; static struct retro_log_callback logging; static retro_log_printf_t log_cb; @@ -54,15 +79,30 @@ static retro_audio_sample_batch_t audio_batch_cb; static retro_input_poll_t input_poll_cb; static retro_input_state_t input_state_cb; +static unsigned emulated_devices = 1; +static unsigned pre_init = 1; +static unsigned screen_layout = 0; +static unsigned audio_out = 0; + +static enum mode mode = MODE_SINGLE_GAME; + +static bool geometry_updated = false; +static bool sameboy_dual = false; + +static bool link_cable_emulation = false; +/*static bool infrared_emulation = false;*/ + signed short soundbuf[1024 * 2]; char retro_system_directory[4096]; char retro_save_directory[4096]; char retro_game_path[4096]; -GB_gameboy_t gb; +GB_gameboy_t gameboy[2]; + extern const unsigned char dmg_boot[], cgb_boot[], agb_boot[]; extern const unsigned dmg_boot_length, cgb_boot_length, agb_boot_length; +bool vblank1_occurred = false, vblank2_occurred = false; static void fallback_log(enum retro_log_level level, const char *fmt, ...) { @@ -75,24 +115,24 @@ static void fallback_log(enum retro_log_level level, const char *fmt, ...) static struct retro_rumble_interface rumble; -static void GB_update_keys_status(GB_gameboy_t *gb) +static void GB_update_keys_status(GB_gameboy_t *gb, unsigned port) { input_poll_cb(); - GB_set_key_state(gb, GB_KEY_RIGHT,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)); - GB_set_key_state(gb, GB_KEY_LEFT, input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)); - GB_set_key_state(gb, GB_KEY_UP,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP) ); - GB_set_key_state(gb, GB_KEY_DOWN,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)); - GB_set_key_state(gb, GB_KEY_A,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A) ); - GB_set_key_state(gb, GB_KEY_B,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B) ); - GB_set_key_state(gb, GB_KEY_SELECT,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT)); - GB_set_key_state(gb, GB_KEY_START,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START) ); + GB_set_key_state(gb, GB_KEY_RIGHT,input_state_cb(port, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)); + GB_set_key_state(gb, GB_KEY_LEFT, input_state_cb(port, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)); + GB_set_key_state(gb, GB_KEY_UP,input_state_cb(port, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP) ); + GB_set_key_state(gb, GB_KEY_DOWN,input_state_cb(port, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)); + GB_set_key_state(gb, GB_KEY_A,input_state_cb(port, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A) ); + GB_set_key_state(gb, GB_KEY_B,input_state_cb(port, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B) ); + GB_set_key_state(gb, GB_KEY_SELECT,input_state_cb(port, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT)); + GB_set_key_state(gb, GB_KEY_START,input_state_cb(port, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START) ); if (gb->rumble_state) - rumble.set_rumble_state(0, RETRO_RUMBLE_STRONG, 65535); + rumble.set_rumble_state(port, RETRO_RUMBLE_STRONG, 65535); else - rumble.set_rumble_state(0, RETRO_RUMBLE_STRONG, 0); + rumble.set_rumble_state(port, RETRO_RUMBLE_STRONG, 0); } @@ -113,10 +153,44 @@ static void audio_callback(void *gb) } } - -static void vblank(GB_gameboy_t *gb) +static void vblank1(GB_gameboy_t *gb) { - audio_callback(gb); + vblank1_occurred = true; + if (audio_out == GB_1) + audio_callback(gb); +} + +static void vblank2(GB_gameboy_t *gb) +{ + vblank2_occurred = true; + if (audio_out == GB_2) + audio_callback(gb); +} + +static uint8_t byte_to_send1 = 0xFF, byte_to_send2 = 0xFF; + +static void serial_start1(GB_gameboy_t *gb, uint8_t byte_received) +{ + byte_to_send1 = byte_received; +} + +static uint8_t serial_end1(GB_gameboy_t *gb) +{ + uint8_t ret = GB_serial_get_data(&gameboy[1]); + GB_serial_set_data(&gameboy[1], byte_to_send1); + return ret; +} + +static void serial_start2(GB_gameboy_t *gb, uint8_t byte_received) +{ + byte_to_send2 = byte_received; +} + +static uint8_t serial_end2(GB_gameboy_t *gb) +{ + uint8_t ret = GB_serial_get_data(&gameboy[0]); + GB_serial_set_data(&gameboy[0], byte_to_send2); + return ret; } static uint32_t rgb_encode(GB_gameboy_t *gb, uint8_t r, uint8_t g, uint8_t b) @@ -126,9 +200,376 @@ static uint32_t rgb_encode(GB_gameboy_t *gb, uint8_t r, uint8_t g, uint8_t b) static retro_environment_t environ_cb; +static const struct retro_variable vars[] = { + { "sameboy_dual", "Dual Game Boy Mode (restart); disabled|enabled" }, + { "sameboy_color_correction_mode", "Color Correction; off|correct curves|emulate hardware|preserve brightness" }, + { "sameboy_high_pass_filter_mode", "High Pass Filter; off|accurate|remove dc offset" }, + { "sameboy_model", "Emulated Model; Game Boy Color|Game Boy Advance|Game Boy" }, + { NULL } +}; + +static const struct retro_variable vars_sameboy_dual[] = { + { "sameboy_dual", "Dual Game Boy Mode (restart); disabled|enabled" }, + { "sameboy_link", "Link Cable Emulation; enabled|disabled" }, + /*{ "sameboy_ir", "Infrared Sensor Emulation; disabled|enabled" },*/ + { "sameboy_screen_layout", "Screen Layout; top-down|left-right" }, + { "sameboy_audio_output", "Audio output; Game Boy #1|Game Boy #2" }, + { "sameboy_model_1", "Emulated Model for Game Boy #1; Game Boy Color|Game Boy Advance|Game Boy" }, + { "sameboy_model_2", "Emulated Model for Game Boy #2; Game Boy Color|Game Boy Advance|Game Boy" }, + { "sameboy_color_correction_mode_1", "Color Correction for Game Boy #1; off|correct curves|emulate hardware|preserve brightness" }, + { "sameboy_color_correction_mode_2", "Color Correction for Game Boy #2; off|correct curves|emulate hardware|preserve brightness" }, + { "sameboy_high_pass_filter_mode_1", "High Pass Filter for Game Boy #1; off|accurate|remove dc offset" }, + { "sameboy_high_pass_filter_mode_2", "High Pass Filter for Game Boy #2; off|accurate|remove dc offset" }, + { NULL } +}; + +static const struct retro_variable vars_link_dual[] = { + { "sameboy_link", "Link Cable Emulation; enabled|disabled" }, + /*{ "sameboy_ir", "Infrared Sensor Emulation; disabled|enabled" },*/ + { "sameboy_screen_layout", "Screen Layout; top-down|left-right" }, + { "sameboy_audio_output", "Audio output; Game Boy #1|Game Boy #2" }, + { "sameboy_model_1", "Emulated Model for Game Boy #1; Game Boy Color|Game Boy Advance|Game Boy" }, + { "sameboy_model_2", "Emulated Model for Game Boy #2; Game Boy Color|Game Boy Advance|Game Boy" }, + { "sameboy_color_correction_mode_1", "Color Correction for Game Boy #1; off|correct curves|emulate hardware|preserve brightness" }, + { "sameboy_color_correction_mode_2", "Color Correction for Game Boy #2; off|correct curves|emulate hardware|preserve brightness" }, + { "sameboy_high_pass_filter_mode_1", "High Pass Filter for Game Boy #1; off|accurate|remove dc offset" }, + { "sameboy_high_pass_filter_mode_2", "High Pass Filter for Game Boy #2; off|accurate|remove dc offset" }, + { NULL } +}; + +static const struct retro_subsystem_memory_info gb1_memory[] = { + { "srm", RETRO_MEMORY_GAMEBOY_1_SRAM }, + { "rtc", RETRO_MEMORY_GAMEBOY_1_RTC }, +}; + +static const struct retro_subsystem_memory_info gb2_memory[] = { + { "srm", RETRO_MEMORY_GAMEBOY_2_SRAM }, + { "rtc", RETRO_MEMORY_GAMEBOY_2_RTC }, +}; + +static const struct retro_subsystem_rom_info gb_roms[] = { + { "GameBoy #1", "gb|gbc", true, false, true, gb1_memory, 1 }, + { "GameBoy #2", "gb|gbc", true, false, true, gb2_memory, 1 }, +}; + + static const struct retro_subsystem_info subsystems[] = { + { "2 Player Game Boy Link", "gb_link_2p", gb_roms, 2, RETRO_GAME_TYPE_GAMEBOY_LINK_2P }, + { NULL }, +}; + +static const struct retro_controller_description controllers[] = { + { "Nintendo Game Boy", RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 0) }, +}; + +static void set_link_cable_state(bool state) +{ + if (state && emulated_devices == 2) + { + GB_set_serial_transfer_start_callback(&gameboy[0], serial_start1); + GB_set_serial_transfer_end_callback(&gameboy[0], serial_end1); + GB_set_serial_transfer_start_callback(&gameboy[1], serial_start2); + GB_set_serial_transfer_end_callback(&gameboy[1], serial_end2); + } + else if (!state) + { + GB_set_serial_transfer_start_callback(&gameboy[0], NULL); + GB_set_serial_transfer_end_callback(&gameboy[0], NULL); + GB_set_serial_transfer_start_callback(&gameboy[1], NULL); + GB_set_serial_transfer_end_callback(&gameboy[1], NULL); + } +} + +static void init_for_current_model(void) +{ + unsigned i = 0; + enum model effective_model[2]; + for (i=0; i < emulated_devices; i++) + { + effective_model[i] = model[i]; + if (effective_model[i] == MODEL_AUTO) { + effective_model[i] = auto_model; + } + } + + for (i = 0; i < emulated_devices; i++) + { + if (GB_is_inited(&gameboy[i])) + GB_switch_model_and_reset(&gameboy[i], effective_model[i] != MODEL_DMG); + + else + { + if (effective_model[i] == MODEL_DMG) + GB_init(&gameboy[i]); + else + GB_init_cgb(&gameboy[i]); + } + const char *model_name = (const char *[]){"dmg", "cgb", "agb"}[model[i]]; + const unsigned char *boot_code = (const unsigned char *[]){dmg_boot, cgb_boot, agb_boot}[model[i]]; + unsigned boot_length = (unsigned []){dmg_boot_length, cgb_boot_length, agb_boot_length}[model[i]]; + + char buf[256]; + snprintf(buf, sizeof(buf), "%s%c%s_boot.bin", retro_system_directory, slash, model_name); + log_cb(RETRO_LOG_INFO, "Loading boot image: %s\n", buf); + if (GB_load_boot_rom(&gameboy[i], buf)) + GB_load_boot_rom_from_buffer(&gameboy[i], boot_code, boot_length); + GB_set_user_data(&gameboy[i], (void*)NULL); + GB_set_pixels_output(&gameboy[i],(unsigned int*)(frame_buf + i * VIDEO_PIXELS)); + GB_set_rgb_encode_callback(&gameboy[i], rgb_encode); + GB_set_sample_rate(&gameboy[i], AUDIO_FREQUENCY); + } + + /* todo: attempt to make these more generic */ + GB_set_vblank_callback(&gameboy[0], (GB_vblank_callback_t) vblank1); + if (emulated_devices == 2) + { + GB_set_vblank_callback(&gameboy[1], (GB_vblank_callback_t) vblank2); + if (link_cable_emulation) + set_link_cable_state(true); + } + + struct retro_memory_descriptor descs[7]; + size_t size; + uint16_t bank; + + + /* todo: add netplay awareness for this so achievements can be granted on the respective client */ + i = 0; + memset(descs, 0, sizeof(descs)); + + descs[0].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_IE, &size, &bank); + descs[0].start = 0xFFFF; + descs[0].len = 1; + + descs[1].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_HRAM, &size, &bank); + descs[1].start = 0xFF80; + descs[1].len = 0x0080; + + descs[2].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_RAM, &size, &bank); + descs[2].start = 0xC000; + descs[2].len = 0x2000; + + descs[3].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_CART_RAM, &size, &bank); + descs[3].start = 0xA000; + descs[3].len = 0x2000; + + descs[4].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_VRAM, &size, &bank); + descs[4].start = 0x8000; + descs[4].len = 0x2000; + + descs[5].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_ROM, &size, &bank); + descs[5].start = 0x0000; + descs[5].len = 0x4000; + descs[5].flags = RETRO_MEMDESC_CONST; + + descs[6].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_OAM, &size, &bank); + descs[6].start = 0xFE00; + descs[6].len = 0x00A0; + + struct retro_memory_map mmaps; + mmaps.descriptors = descs; + mmaps.num_descriptors = sizeof(descs) / sizeof(descs[0]); + environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps); +} + +static void check_variables(bool link) +{ + struct retro_variable var = {0}; + + if (!link) + { + var.key = "sameboy_color_correction_mode"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && GB_is_cgb(&gameboy[0])) + { + if (strcmp(var.value, "off") == 0) + GB_set_color_correction_mode(&gameboy[0], GB_COLOR_CORRECTION_DISABLED); + else if (strcmp(var.value, "correct curves") == 0) + GB_set_color_correction_mode(&gameboy[0], GB_COLOR_CORRECTION_CORRECT_CURVES); + else if (strcmp(var.value, "emulate hardware") == 0) + GB_set_color_correction_mode(&gameboy[0], GB_COLOR_CORRECTION_EMULATE_HARDWARE); + else if (strcmp(var.value, "preserve brightness") == 0) + GB_set_color_correction_mode(&gameboy[0], GB_COLOR_CORRECTION_PRESERVE_BRIGHTNESS); + } + + var.key = "sameboy_high_pass_filter_mode"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + if (strcmp(var.value, "off") == 0) + GB_set_highpass_filter_mode(&gameboy[0], GB_HIGHPASS_OFF); + else if (strcmp(var.value, "accurate") == 0) + GB_set_highpass_filter_mode(&gameboy[0], GB_HIGHPASS_ACCURATE); + else if (strcmp(var.value, "remove dc offset") == 0) + GB_set_highpass_filter_mode(&gameboy[0], GB_HIGHPASS_REMOVE_DC_OFFSET); + } + + var.key = "sameboy_model"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + enum model new_model = model[0]; + if (strcmp(var.value, "Game Boy") == 0) + new_model = MODEL_DMG; + else if (strcmp(var.value, "Game Boy Color") == 0) + new_model = MODEL_CGB; + else if (strcmp(var.value, "Game Boy Advance") == 0) + new_model = MODEL_AGB; + else + new_model = MODEL_AUTO; + + if (GB_is_inited(&gameboy[0]) && new_model != model[0]) { + model[0] = new_model; + init_for_current_model(); + } + model[0] = new_model; + } + } + else + { + var.key = "sameboy_color_correction_mode_1"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && GB_is_cgb(&gameboy[0])) + { + if (strcmp(var.value, "off") == 0) + GB_set_color_correction_mode(&gameboy[0], GB_COLOR_CORRECTION_DISABLED); + else if (strcmp(var.value, "correct curves") == 0) + GB_set_color_correction_mode(&gameboy[0], GB_COLOR_CORRECTION_CORRECT_CURVES); + else if (strcmp(var.value, "emulate hardware") == 0) + GB_set_color_correction_mode(&gameboy[0], GB_COLOR_CORRECTION_EMULATE_HARDWARE); + else if (strcmp(var.value, "preserve brightness") == 0) + GB_set_color_correction_mode(&gameboy[0], GB_COLOR_CORRECTION_PRESERVE_BRIGHTNESS); + } + + var.key = "sameboy_color_correction_mode_2"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && GB_is_cgb(&gameboy[1])) + { + if (strcmp(var.value, "off") == 0) + GB_set_color_correction_mode(&gameboy[1], GB_COLOR_CORRECTION_DISABLED); + else if (strcmp(var.value, "correct curves") == 0) + GB_set_color_correction_mode(&gameboy[1], GB_COLOR_CORRECTION_CORRECT_CURVES); + else if (strcmp(var.value, "emulate hardware") == 0) + GB_set_color_correction_mode(&gameboy[1], GB_COLOR_CORRECTION_EMULATE_HARDWARE); + else if (strcmp(var.value, "preserve brightness") == 0) + GB_set_color_correction_mode(&gameboy[1], GB_COLOR_CORRECTION_PRESERVE_BRIGHTNESS); + } + + var.key = "sameboy_high_pass_filter_mode_1"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + if (strcmp(var.value, "off") == 0) + GB_set_highpass_filter_mode(&gameboy[0], GB_HIGHPASS_OFF); + else if (strcmp(var.value, "accurate") == 0) + GB_set_highpass_filter_mode(&gameboy[0], GB_HIGHPASS_ACCURATE); + else if (strcmp(var.value, "remove dc offset") == 0) + GB_set_highpass_filter_mode(&gameboy[0], GB_HIGHPASS_REMOVE_DC_OFFSET); + } + + var.key = "sameboy_high_pass_filter_mode_2"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + if (strcmp(var.value, "off") == 0) + GB_set_highpass_filter_mode(&gameboy[1], GB_HIGHPASS_OFF); + else if (strcmp(var.value, "accurate") == 0) + GB_set_highpass_filter_mode(&gameboy[1], GB_HIGHPASS_ACCURATE); + else if (strcmp(var.value, "remove dc offset") == 0) + GB_set_highpass_filter_mode(&gameboy[1], GB_HIGHPASS_REMOVE_DC_OFFSET); + } + + var.key = "sameboy_model_1"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + enum model new_model = model[0]; + if (strcmp(var.value, "Game Boy") == 0) + new_model = MODEL_DMG; + else if (strcmp(var.value, "Game Boy Color") == 0) + new_model = MODEL_CGB; + else if (strcmp(var.value, "Game Boy Advance") == 0) + new_model = MODEL_AGB; + else + new_model = MODEL_AUTO; + if (GB_is_inited(&gameboy[0]) && new_model != model[0]) { + model[0] = new_model; + init_for_current_model(); + } + model[0] = new_model; + } + + var.key = "sameboy_model_2"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + enum model new_model = model[1]; + if (strcmp(var.value, "Game Boy") == 0) + new_model = MODEL_DMG; + else if (strcmp(var.value, "Game Boy Color") == 0) + new_model = MODEL_CGB; + else if (strcmp(var.value, "Game Boy Advance") == 0) + new_model = MODEL_AGB; + else + new_model = MODEL_AUTO; + if (GB_is_inited(&gameboy[1]) && new_model != model[1]) { + model[1] = new_model; + init_for_current_model(); + } + model[1] = new_model; + } + + } + + var.key = "sameboy_screen_layout"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + if (strcmp(var.value, "top-down") == 0) + screen_layout = LAYOUT_TOP_DOWN; + else + screen_layout = LAYOUT_LEFT_RIGHT; + + geometry_updated = true; + } + + var.key = "sameboy_dual"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + if (strcmp(var.value, "enabled") == 0) + sameboy_dual = true; + else + sameboy_dual = false; + } + + var.key = "sameboy_link"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + bool tmp = link_cable_emulation; + if (strcmp(var.value, "enabled") == 0) + link_cable_emulation = true; + else + link_cable_emulation = false; + if (link_cable_emulation && link_cable_emulation != tmp) + set_link_cable_state(true); + else if (!link_cable_emulation && link_cable_emulation != tmp) + set_link_cable_state(false); + } + + var.key = "sameboy_audio_output"; + var.value = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + if (strcmp(var.value, "Game Boy #1") == 0) + audio_out = GB_1; + else + audio_out = GB_2; + } +} + void retro_init(void) { - frame_buf = (uint32_t*)malloc(VIDEO_PIXELS * sizeof(uint32_t)); const char *dir = NULL; if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) @@ -140,12 +581,45 @@ void retro_init(void) snprintf(retro_save_directory, sizeof(retro_save_directory), "%s", dir); else snprintf(retro_save_directory, sizeof(retro_save_directory), "%s", "."); + + static const struct retro_controller_info ports[] = { + { controllers, 1 }, + { controllers, 1 }, + { NULL, 0 }, + }; + + environ_cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports); + + struct retro_input_descriptor desc[] = { + { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "Left" }, + { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "Up" }, + { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "Down" }, + { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "Right" }, + { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, + { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "A" }, + { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" }, + { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, + { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "Left" }, + { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "Up" }, + { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "Down" }, + { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "Right" }, + { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, + { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "A" }, + { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" }, + { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, + { 0 }, + }; + + environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc); + } void retro_deinit(void) { free(frame_buf); + free(frame_buf_copy); frame_buf = NULL; + frame_buf_copy = NULL; } unsigned retro_api_version(void) @@ -155,7 +629,7 @@ unsigned retro_api_version(void) void retro_set_controller_port_device(unsigned port, unsigned device) { - log_cb(RETRO_LOG_INFO, "Plugging device %u into port %u.\n", device, port); + log_cb(RETRO_LOG_INFO, "Connecting device %u into port %u\n", device, port); } void retro_get_system_info(struct retro_system_info *info) @@ -173,12 +647,24 @@ void retro_get_system_info(struct retro_system_info *info) void retro_get_system_av_info(struct retro_system_av_info *info) { - struct retro_game_geometry geom = { VIDEO_WIDTH, VIDEO_HEIGHT,VIDEO_WIDTH, VIDEO_HEIGHT ,160.0 / 144.0 }; + struct retro_game_geometry geom; struct retro_system_timing timing = { FRAME_RATE, AUDIO_FREQUENCY }; + if (screen_layout == LAYOUT_TOP_DOWN) { + geom.base_width = VIDEO_WIDTH; + geom.base_height = VIDEO_HEIGHT * emulated_devices; + geom.aspect_ratio = VIDEO_WIDTH / (emulated_devices * VIDEO_HEIGHT); + }else if (screen_layout == LAYOUT_LEFT_RIGHT) { + geom.base_width = VIDEO_WIDTH * emulated_devices; + geom.base_height = VIDEO_HEIGHT; + geom.aspect_ratio = (VIDEO_WIDTH * emulated_devices) / VIDEO_HEIGHT; + } + + geom.max_width = VIDEO_WIDTH * emulated_devices; + geom.max_height = VIDEO_HEIGHT * emulated_devices; + info->geometry = geom; info->timing = timing; - } void retro_set_environment(retro_environment_t cb) @@ -190,15 +676,7 @@ void retro_set_environment(retro_environment_t cb) else log_cb = fallback_log; - static const struct retro_controller_description controllers[] = { - { "Nintendo Gameboy", RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 0) }, - }; - - static const struct retro_controller_info ports[] = { - { controllers, 1 }, - { NULL, 0 }, - }; - cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports); + cb(RETRO_ENVIRONMENT_SET_SUBSYSTEM_INFO, (void*)subsystems); } void retro_set_audio_sample(retro_audio_sample_t cb) @@ -227,206 +705,126 @@ void retro_set_video_refresh(retro_video_refresh_t cb) void retro_reset(void) { - GB_reset(&gb); -} + for (int i = 0; i < emulated_devices; i++) + GB_reset(&gameboy[i]); -static void init_for_current_model(void) -{ - enum model effective_model = model; - if (effective_model == MODEL_AUTO) { - effective_model = auto_model; - } - if (GB_is_inited(&gb)) { - GB_switch_model_and_reset(&gb, effective_model != MODEL_DMG); - } - else { - if (effective_model == MODEL_DMG) { - GB_init(&gb); - } - else { - GB_init_cgb(&gb); - } - } - const char *model_name = (const char *[]){"dmg", "cgb", "agb"}[effective_model]; - const unsigned char *boot_code = (const unsigned char *[]){dmg_boot, cgb_boot, agb_boot}[effective_model]; - unsigned boot_length = (unsigned []){dmg_boot_length, cgb_boot_length, agb_boot_length}[effective_model]; - - char buf[256]; - snprintf(buf, sizeof(buf), "%s%c%s_boot.bin", retro_system_directory, slash, model_name); - log_cb(RETRO_LOG_INFO, "Loading boot image: %s\n", buf); - - if (GB_load_boot_rom(&gb, buf)) { - GB_load_boot_rom_from_buffer(&gb, boot_code, boot_length); - } - - GB_set_vblank_callback(&gb, (GB_vblank_callback_t) vblank); - GB_set_user_data(&gb, (void*)NULL); - GB_set_pixels_output(&gb,(unsigned int*)frame_buf); - GB_set_rgb_encode_callback(&gb, rgb_encode); - GB_set_sample_rate(&gb, AUDIO_FREQUENCY); - - struct retro_memory_descriptor descs[7]; - size_t size; - uint16_t bank; - - memset(descs, 0, sizeof(descs)); - - descs[0].ptr = GB_get_direct_access(&gb, GB_DIRECT_ACCESS_IE, &size, &bank); - descs[0].start = 0xFFFF; - descs[0].len = 1; - - descs[1].ptr = GB_get_direct_access(&gb, GB_DIRECT_ACCESS_HRAM, &size, &bank); - descs[1].start = 0xFF80; - descs[1].len = 0x0080; - - descs[2].ptr = GB_get_direct_access(&gb, GB_DIRECT_ACCESS_RAM, &size, &bank); - descs[2].start = 0xC000; - descs[2].len = 0x2000; - - descs[3].ptr = GB_get_direct_access(&gb, GB_DIRECT_ACCESS_CART_RAM, &size, &bank); - descs[3].start = 0xA000; - descs[3].len = 0x2000; - - descs[4].ptr = GB_get_direct_access(&gb, GB_DIRECT_ACCESS_VRAM, &size, &bank); - descs[4].start = 0x8000; - descs[4].len = 0x2000; - - descs[5].ptr = GB_get_direct_access(&gb, GB_DIRECT_ACCESS_ROM, &size, &bank); - descs[5].start = 0x0000; - descs[5].len = 0x4000; - descs[5].flags = RETRO_MEMDESC_CONST; - - descs[6].ptr = GB_get_direct_access(&gb, GB_DIRECT_ACCESS_OAM, &size, &bank); - descs[6].start = 0xFE00; - descs[6].len = 0x00A0; - - struct retro_memory_map mmaps; - mmaps.descriptors = descs; - mmaps.num_descriptors = sizeof(descs) / sizeof(descs[0]); - environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps); -} - -static void check_variables(void) -{ - struct retro_variable var = {0}; - - var.key = "sameboy_color_correction_mode"; - var.value = NULL; - if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && GB_is_cgb(&gb)) - { - if (strcmp(var.value, "off") == 0) - GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_DISABLED); - else if (strcmp(var.value, "correct curves") == 0) - GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_CORRECT_CURVES); - else if (strcmp(var.value, "emulate hardware") == 0) - GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_EMULATE_HARDWARE); - else if (strcmp(var.value, "preserve brightness") == 0) - GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_PRESERVE_BRIGHTNESS); - } - - var.key = "sameboy_high_pass_filter_mode"; - var.value = NULL; - if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) - { - if (strcmp(var.value, "off") == 0) - GB_set_highpass_filter_mode(&gb, GB_HIGHPASS_OFF); - else if (strcmp(var.value, "accurate") == 0) - GB_set_highpass_filter_mode(&gb, GB_HIGHPASS_ACCURATE); - else if (strcmp(var.value, "remove dc offset") == 0) - GB_set_highpass_filter_mode(&gb, GB_HIGHPASS_REMOVE_DC_OFFSET); - } - - var.key = "sameboy_model"; - var.value = NULL; - if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) - { - enum model new_model = model; - if (strcmp(var.value, "Game Boy") == 0) - new_model = MODEL_DMG; - else if (strcmp(var.value, "Game Boy Color") == 0) - new_model = MODEL_CGB; - else if (strcmp(var.value, "Game Boy Advance") == 0) - new_model = MODEL_AGB; - else if (strcmp(var.value, "Auto") == 0) - new_model = MODEL_AUTO; - if (GB_is_inited(&gb) && new_model != model) { - model = new_model; - init_for_current_model(); - } - else { - model = new_model; - } - } } void retro_run(void) { bool updated = false; - if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) - check_variables(); - GB_update_keys_status(&gb); - GB_run_frame(&gb); - video_cb(frame_buf, VIDEO_WIDTH, VIDEO_HEIGHT, VIDEO_WIDTH * sizeof(uint32_t)); + if (pre_init) + geometry_updated = false; + + if (geometry_updated) { + struct retro_system_av_info info; + retro_get_system_av_info(&info); + geometry_updated = false; + environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &info.geometry); + } + + pre_init = 0; + + if (!frame_buf) + return; + + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) + check_variables(emulated_devices == 2 ? true : false); + + GB_update_keys_status(&gameboy[0], 0); + if (emulated_devices == 2) + GB_update_keys_status(&gameboy[1], 1); + + vblank1_occurred = vblank2_occurred = false; + signed delta = 0; + if (emulated_devices == 2) + { + while (!vblank1_occurred || !vblank2_occurred) { + if (delta >= 0) { + delta -= GB_run(&gameboy[0]); + } + else { + delta += GB_run(&gameboy[1]); + } + } + } + else + GB_run_frame(&gameboy[0]); + + if (screen_layout == LAYOUT_TOP_DOWN) { + video_cb(frame_buf, VIDEO_WIDTH, VIDEO_HEIGHT * emulated_devices, VIDEO_WIDTH * sizeof(uint32_t)); + }else if (screen_layout == LAYOUT_LEFT_RIGHT) { + /* use slow memcpy method for now */ + for (int index = 0; index < emulated_devices; index++) { + for (int y = 0; y < VIDEO_HEIGHT; y++) { + for (int x = 0; x < VIDEO_WIDTH; x++) { + frame_buf_copy[VIDEO_WIDTH * emulated_devices * y + (x + VIDEO_WIDTH * index)] = frame_buf[VIDEO_WIDTH * (y + VIDEO_HEIGHT * index) + x]; + } + } + } + + video_cb(frame_buf_copy, VIDEO_WIDTH * emulated_devices, VIDEO_HEIGHT, VIDEO_WIDTH * emulated_devices * sizeof(uint32_t)); + } } bool retro_load_game(const struct retro_game_info *info) { - struct retro_input_descriptor desc[] = { - { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "Left" }, - { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "Up" }, - { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "Down" }, - { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "Right" }, - { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" }, - { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "A" }, - { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" }, - { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" }, - { 0 }, - }; + environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars); + check_variables(false); + if (sameboy_dual) + { + emulated_devices = 2; + mode = MODE_SINGLE_GAME_DUAL; + environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars_sameboy_dual); + check_variables(true); + } + else + mode = MODE_SINGLE_GAME; - environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc); + frame_buf = (uint32_t*)malloc(emulated_devices * VIDEO_PIXELS * sizeof(uint32_t)); + frame_buf_copy = (uint32_t*)malloc(emulated_devices * VIDEO_PIXELS * sizeof(uint32_t)); + + memset(frame_buf, 0, emulated_devices * VIDEO_PIXELS * sizeof(uint32_t)); + memset(frame_buf_copy, 0, emulated_devices * VIDEO_PIXELS * sizeof(uint32_t)); enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_XRGB8888; if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { - log_cb(RETRO_LOG_INFO, "XRGB8888 is not supported.\n"); + log_cb(RETRO_LOG_INFO, "XRGB8888 is not supported\n"); return false; } - snprintf(retro_game_path, sizeof(retro_game_path), "%s", info->path); - auto_model = (info->path[strlen(info->path) - 1] & ~0x20) == 'C' ? MODEL_CGB : MODEL_DMG; + snprintf(retro_game_path, sizeof(retro_game_path), "%s", info->path); + init_for_current_model(); - if (GB_load_rom(&gb,info->path)) { - log_cb(RETRO_LOG_INFO, "Failed to load ROM\n"); - return false; + for (int i = 0; i < emulated_devices; i++) + { + if (GB_load_rom(&gameboy[i],info->path)) + { + log_cb(RETRO_LOG_INFO, "Failed to load ROM at %s\n", info->path); + return false; + } } - bool yes = true; - environ_cb(RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS, &yes); + bool achievements = true; + environ_cb(RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS, &achievements); if (environ_cb(RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE, &rumble)) - log_cb(RETRO_LOG_INFO, "Rumble environment supported.\n"); + log_cb(RETRO_LOG_INFO, "Rumble environment supported\n"); else - log_cb(RETRO_LOG_INFO, "Rumble environment not supported.\n"); - - static const struct retro_variable vars[] = { - { "sameboy_color_correction_mode", "Color Correction; off|correct curves|emulate hardware|preserve brightness" }, - { "sameboy_high_pass_filter_mode", "High Pass Filter; off|accurate|remove dc offset" }, - { "sameboy_model", "Emulated Model; Auto|Game Boy|Game Boy Color|Game Boy Advance" }, - { NULL } - }; - - environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars); - check_variables(); + log_cb(RETRO_LOG_INFO, "Rumble environment not supported\n"); + check_variables(emulated_devices == 2 ? true : false); return true; } void retro_unload_game(void) { - GB_free(&gb); + for (int i = 0; i < emulated_devices; i++) + GB_free(&gameboy[i]); } unsigned retro_get_region(void) @@ -434,19 +832,83 @@ unsigned retro_get_region(void) return RETRO_REGION_NTSC; } -bool retro_load_game_special(unsigned type, const struct retro_game_info *info, size_t num) +bool retro_load_game_special(unsigned type, const struct retro_game_info *info, size_t num_info) { - return false; + + if (type == RETRO_GAME_TYPE_GAMEBOY_LINK_2P) + { + emulated_devices = 2; + mode = MODE_DUAL_GAME; + } + else + return false; /* all other types are unhandled for now */ + + environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars_link_dual); + check_variables(true); + + frame_buf = (uint32_t*)malloc(emulated_devices * VIDEO_PIXELS * sizeof(uint32_t)); + frame_buf_copy = (uint32_t*)malloc(emulated_devices * VIDEO_PIXELS * sizeof(uint32_t)); + + memset(frame_buf, 0, emulated_devices * VIDEO_PIXELS * sizeof(uint32_t)); + memset(frame_buf_copy, 0, emulated_devices * VIDEO_PIXELS * sizeof(uint32_t)); + + enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_XRGB8888; + if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) + { + log_cb(RETRO_LOG_INFO, "XRGB8888 is not supported\n"); + return false; + } + + auto_model = (info->path[strlen(info->path) - 1] & ~0x20) == 'C' ? MODEL_CGB : MODEL_DMG; + snprintf(retro_game_path, sizeof(retro_game_path), "%s", info->path); + + init_for_current_model(); + for (int i = 0; i < emulated_devices; i++) + { + if (GB_load_rom(&gameboy[i], info[i].path)) + { + log_cb(RETRO_LOG_INFO, "Failed to load ROM\n"); + return false; + } + } + + bool achievements = true; + environ_cb(RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS, &achievements); + + if (environ_cb(RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE, &rumble)) + log_cb(RETRO_LOG_INFO, "Rumble environment supported\n"); + else + log_cb(RETRO_LOG_INFO, "Rumble environment not supported\n"); + + check_variables(emulated_devices == 2 ? true : false); + return true; } size_t retro_serialize_size(void) { - return GB_get_save_state_size(&gb); + if (emulated_devices == 2) + return GB_get_save_state_size(&gameboy[0]) + GB_get_save_state_size(&gameboy[1]); + else + return GB_get_save_state_size(&gameboy[0]); } bool retro_serialize(void *data, size_t size) { - GB_save_state_to_buffer(&gb, (uint8_t*) data); + if (pre_init == 1) + return false; + + void* save_data[2]; + size_t state_size[2]; + + for (int i = 0; i < emulated_devices; i++) + { + state_size[i] = GB_get_save_state_size(&gameboy[i]); + save_data[i] = (uint8_t*)malloc(state_size[i]); + GB_save_state_to_buffer(&gameboy[i], (uint8_t*) save_data[i]); + memcpy(data + (state_size[i] * i), save_data[i], state_size[i]); + free(save_data[i]); + } + if (data) return true; else @@ -455,37 +917,81 @@ bool retro_serialize(void *data, size_t size) bool retro_unserialize(const void *data, size_t size) { - if (GB_load_state_from_buffer(&gb, (uint8_t*) data, size) == 0) - return true; - else - return false; + void* save_data[2]; + size_t state_size[2]; + int ret; + + for (int i = 0; i < emulated_devices; i++) + { + state_size[i] = GB_get_save_state_size(&gameboy[i]); + save_data[i] = (uint8_t*)malloc(state_size[i]); + memcpy (save_data[i], data + (state_size[i] * i), state_size[i]); + ret = GB_load_state_from_buffer(&gameboy[i], save_data[i], state_size[i]); + free(save_data[i]); + + if (ret != 0) + return false; + } + + return true; + } void *retro_get_memory_data(unsigned type) { - void* data; - switch(type) + void* data = NULL; + switch(mode) { - case RETRO_MEMORY_SYSTEM_RAM: - data = gb.ram; + case MODE_SINGLE_GAME: + case MODE_SINGLE_GAME_DUAL: /* todo: hook this properly */ + { + switch(type) + { + case RETRO_MEMORY_SYSTEM_RAM: + data = gameboy[0].ram; + break; + case RETRO_MEMORY_SAVE_RAM: + if (gameboy[0].cartridge_type->has_battery && gameboy[0].mbc_ram_size != 0) + data = gameboy[0].mbc_ram; + else + data = NULL; + break; + case RETRO_MEMORY_VIDEO_RAM: + data = gameboy[0].vram; + break; + case RETRO_MEMORY_RTC: + if(gameboy[0].cartridge_type->has_battery) + data = &gameboy[0].rtc_real; + else + data = NULL; + break; + default: + break; + } + } break; - case RETRO_MEMORY_SAVE_RAM: - if (gb.cartridge_type->has_battery && gb.mbc_ram_size != 0) - data = gb.mbc_ram; - else - data = NULL; - break; - case RETRO_MEMORY_VIDEO_RAM: - data = gb.vram; - break; - case RETRO_MEMORY_RTC: - if(gb.cartridge_type->has_battery) - data = &gb.rtc_real; - else - data = NULL; + case MODE_DUAL_GAME: /* todo: hook up other memory types */ + { + switch (type) + { + case RETRO_MEMORY_GAMEBOY_1_SRAM: + if (gameboy[0].cartridge_type->has_battery && gameboy[0].mbc_ram_size != 0) + data = gameboy[0].mbc_ram; + else + data = NULL; + break; + case RETRO_MEMORY_GAMEBOY_2_SRAM: + if (gameboy[1].cartridge_type->has_battery && gameboy[1].mbc_ram_size != 0) + data = gameboy[1].mbc_ram; + else + data = NULL; + break; + default: + break; + } + } break; default: - data = NULL; break; } return data; @@ -493,31 +999,62 @@ void *retro_get_memory_data(unsigned type) size_t retro_get_memory_size(unsigned type) { - size_t size; - switch(type) + size_t size = 0; + switch(mode) { - case RETRO_MEMORY_SYSTEM_RAM: - size = gb.ram_size; + case MODE_SINGLE_GAME: + case MODE_SINGLE_GAME_DUAL: /* todo: hook this properly */ + { + switch(type) + { + case RETRO_MEMORY_SYSTEM_RAM: + size = gameboy[0].ram_size; + break; + case RETRO_MEMORY_SAVE_RAM: + if (gameboy[0].cartridge_type->has_battery && gameboy[0].mbc_ram_size != 0) + size = gameboy[0].mbc_ram_size; + else + size = 0; + break; + case RETRO_MEMORY_VIDEO_RAM: + size = gameboy[0].vram_size; + break; + case RETRO_MEMORY_RTC: + if(gameboy[0].cartridge_type->has_battery) + size = sizeof (gameboy[0].rtc_real); + else + size = 0; + break; + default: + break; + } + } break; - case RETRO_MEMORY_SAVE_RAM: - if (gb.cartridge_type->has_battery && gb.mbc_ram_size != 0) - size = gb.mbc_ram_size; - else - size = 0; - break; - case RETRO_MEMORY_VIDEO_RAM: - size = gb.vram_size; - break; - case RETRO_MEMORY_RTC: - if(gb.cartridge_type->has_battery) - size = sizeof (gb.rtc_real); - else - size = 0; + case MODE_DUAL_GAME: /* todo: hook up other memory types */ + { + switch (type) + { + case RETRO_MEMORY_GAMEBOY_1_SRAM: + if (gameboy[0].cartridge_type->has_battery && gameboy[0].mbc_ram_size != 0) + size = gameboy[0].mbc_ram_size; + else + size = 0; + break; + case RETRO_MEMORY_GAMEBOY_2_SRAM: + if (gameboy[1].cartridge_type->has_battery && gameboy[1].mbc_ram_size != 0) + size = gameboy[1].mbc_ram_size; + else + size = 0; + break; + default: + break;; + } + } break; default: - size = 0; break; } + return size; }