basic libretro port
This commit is contained in:
Not6
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parent
c1f27d7b27
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009a66d723
14
Makefile.common
Normal file
14
Makefile.common
Normal file
@ -0,0 +1,14 @@
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SOURCES_C := $(CORE_DIR)/gb.c \
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$(CORE_DIR)/apu.c \
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$(CORE_DIR)/memory.c \
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$(CORE_DIR)/mbc.c \
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$(CORE_DIR)/timing.c \
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$(CORE_DIR)/display.c \
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$(CORE_DIR)/symbol_hash.c \
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$(CORE_DIR)/debugger.c \
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$(CORE_DIR)/camera.c \
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$(CORE_DIR)/z80_cpu.c \
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$(CORE_DIR)/z80_disassembler.c \
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$(CORE_DIR)/joypad.c \
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$(LIBRETRO_DIR)/libretro.c
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144
Makefile.libretro
Normal file
144
Makefile.libretro
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@ -0,0 +1,144 @@
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STATIC_LINKING := 0
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AR := ar
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ifeq ($(platform),)
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platform = unix
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ifeq ($(shell uname -a),)
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platform = win
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else ifneq ($(findstring MINGW,$(shell uname -a)),)
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platform = win
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else ifneq ($(findstring Darwin,$(shell uname -a)),)
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platform = osx
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else ifneq ($(findstring win,$(shell uname -a)),)
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platform = win
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endif
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endif
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# system platform
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system_platform = unix
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ifeq ($(shell uname -a),)
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EXE_EXT = .exe
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system_platform = win
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else ifneq ($(findstring Darwin,$(shell uname -a)),)
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system_platform = osx
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arch = intel
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ifeq ($(shell uname -p),powerpc)
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arch = ppc
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endif
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else ifneq ($(findstring MINGW,$(shell uname -a)),)
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system_platform = win
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endif
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CORE_DIR += ./Core
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LIBRETRO_DIR += ./libretro
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TARGET_NAME = sameboy
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LIBM = -lc -lm
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INCLUDES += -I $(CORE_DIR)
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ifeq ($(ARCHFLAGS),)
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ifeq ($(archs),ppc)
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ARCHFLAGS = -arch ppc -arch ppc64
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else
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ARCHFLAGS = -arch i386 -arch x86_64
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endif
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endif
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ifeq ($(platform), osx)
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ifndef ($(NOUNIVERSAL))
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CXXFLAGS += $(ARCHFLAGS)
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LFLAGS += $(ARCHFLAGS)
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endif
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endif
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ifeq ($(STATIC_LINKING), 1)
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EXT := a
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endif
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ifeq ($(platform), unix)
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EXT ?= so
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TARGET := $(TARGET_NAME)_libretro.$(EXT)
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fpic := -fPIC
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SHARED := -shared -Wl,--version-script=$(LIBRETRO_DIR)/link.T -Wl,--no-undefined
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else ifeq ($(platform), linux-portable)
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TARGET := $(TARGET_NAME)_libretro.$(EXT)
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fpic := -fPIC -nostdlib
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SHARED := -shared -Wl,--version-script=$(LIBRETRO_DIR)/link.T
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LIBM :=
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else ifneq (,$(findstring osx,$(platform)))
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TARGET := $(TARGET_NAME)_libretro.dylib
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fpic := -fPIC
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SHARED := -dynamiclib
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else ifneq (,$(findstring ios,$(platform)))
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TARGET := $(TARGET_NAME)_libretro_ios.dylib
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fpic := -fPIC
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SHARED := -dynamiclib
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ifeq ($(IOSSDK),)
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IOSSDK := $(shell xcodebuild -version -sdk iphoneos Path)
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endif
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DEFINES := -DIOS
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CC = cc -arch armv7 -isysroot $(IOSSDK)
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ifeq ($(platform),ios9)
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CC += -miphoneos-version-min=8.0
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CXXFLAGS += -miphoneos-version-min=8.0
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else
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CC += -miphoneos-version-min=5.0
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CXXFLAGS += -miphoneos-version-min=5.0
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endif
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else ifneq (,$(findstring qnx,$(platform)))
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TARGET := $(TARGET_NAME)_libretro_qnx.so
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fpic := -fPIC
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SHARED := -shared -Wl,--version-script=$(LIBRETRO_DIR)/link.T -Wl,--no-undefined
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else ifeq ($(platform), emscripten)
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TARGET := $(TARGET_NAME)_libretro_emscripten.bc
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fpic := -fPIC
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SHARED := -shared -Wl,--version-script=$(LIBRETRO_DIR)/link.T -Wl,--no-undefined
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else ifeq ($(platform), vita)
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TARGET := $(TARGET_NAME)_vita.a
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CC = arm-vita-eabi-gcc
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AR = arm-vita-eabi-ar
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CXXFLAGS += -Wl,-q -Wall -O3
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STATIC_LINKING = 1
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else
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CC = gcc
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TARGET := $(TARGET_NAME)_libretro.dll
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SHARED := -shared -static-libgcc -static-libstdc++ -s -Wl,--version-script=$(LIBRETRO_DIR)/link.T -Wl,--no-undefined
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endif
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LDFLAGS += $(LIBM)
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ifeq ($(DEBUG), 1)
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CXXFLAGS += -O0 -g
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else
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CXXFLAGS += -O3
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endif
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include Makefile.common
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OBJECTS := $(SOURCES_C:.c=.o) $(SOURCES_CXX:.cpp=.o)
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CFLAGS += -Wall -D__LIBRETRO__ $(fpic) $(INCLUDES) -std=gnu11 -D_GNU_SOURCE -D_USE_MATH_DEFINES -DNDEBUG
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CXXFLAGS += -Wall -D__LIBRETRO__ $(fpic)
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all: $(TARGET)
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$(TARGET): $(OBJECTS)
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ifeq ($(STATIC_LINKING), 1)
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$(AR) rcs $@ $(OBJECTS)
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else
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$(CC) $(fpic) $(SHARED) $(INCLUDES) -o $@ $(OBJECTS) $(LDFLAGS)
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endif
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Core/%.o: Core/%.c
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$(CC) -c -o $@ $< $(CFLAGS) $(fpic) -DGB_INTERNAL
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%.o: %.c
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$(CC) $(CFLAGS) $(fpic) -c -o $@ $<
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clean:
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rm -f $(OBJECTS) $(TARGET)
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.PHONY: clean
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383
libretro/libretro.c
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383
libretro/libretro.c
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#include <stdio.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <time.h>
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#include <assert.h>
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#include <signal.h>
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#include <stdarg.h>
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#define AUDIO_FREQUENCY 44100
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#ifdef _WIN32
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#include <direct.h>
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#include <windows.h>
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#define snprintf _snprintf
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#endif
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#include "gb.h"
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#include "libretro.h"
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#ifdef _WIN32
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char slash = '\\';
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#else
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char slash = '/';
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#endif
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#define VIDEO_WIDTH 160
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#define VIDEO_HEIGHT 144
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#define VIDEO_PIXELS VIDEO_WIDTH * VIDEO_HEIGHT
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char battery_save_path[512];
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char symbols_path[512];
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static uint32_t *frame_buf;
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static struct retro_log_callback logging;
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static retro_log_printf_t log_cb;
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static retro_video_refresh_t video_cb;
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static retro_audio_sample_t audio_cb;
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static retro_audio_sample_batch_t audio_batch_cb;
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static retro_input_poll_t input_poll_cb;
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static retro_input_state_t input_state_cb;
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signed short soundbuf[1024*2];
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char retro_base_directory[4096];
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char retro_game_path[4096];
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int RLOOP=1;
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GB_gameboy_t gb;
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static void fallback_log(enum retro_log_level level, const char *fmt, ...)
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{
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(void)level;
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va_list va;
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va_start(va, fmt);
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vfprintf(stderr, fmt, va);
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va_end(va);
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}
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static void GB_update_keys_status(GB_gameboy_t *gb)
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{
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input_poll_cb();
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GB_set_key_state(gb, GB_KEY_RIGHT,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT));
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GB_set_key_state(gb, GB_KEY_LEFT, input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT));
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GB_set_key_state(gb, GB_KEY_UP,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP) );
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GB_set_key_state(gb, GB_KEY_DOWN,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN));
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GB_set_key_state(gb, GB_KEY_A,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A) );
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GB_set_key_state(gb, GB_KEY_B,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B) );
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GB_set_key_state(gb, GB_KEY_SELECT,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT));
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GB_set_key_state(gb, GB_KEY_START,input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START) );
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/*
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A)) << 0;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B)) << 1;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT)) << 2;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)) << 3;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)) << 4;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)) << 5;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)) << 6;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)) << 7;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R)) << 8;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L)) << 9;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X)) << 10;
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keys |= (!!input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y)) << 11;
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*/
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}
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static void audio_callback(void *gb)
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{
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GB_apu_copy_buffer(gb, (GB_sample_t *) soundbuf, 735);
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audio_batch_cb(soundbuf, 735);
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}
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static void vblank(GB_gameboy_t *gb)
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{
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GB_update_keys_status(gb);
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GB_set_pixels_output(gb, frame_buf);
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audio_callback(gb);
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RLOOP=0;
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}
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static uint32_t rgb_encode(GB_gameboy_t *gb, uint8_t r, uint8_t g, uint8_t b)
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{
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return r<<16|g<<8|b;
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}
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static void debugger_interrupt(int ignore)
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{
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/* ^C twice to exit */
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if (GB_debugger_is_stopped(&gb)) {
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exit(0);
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}
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GB_debugger_break(&gb);
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}
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static void replace_extension(const char *src, size_t length, char *dest, const char *ext)
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{
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memcpy(dest, src, length);
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dest[length] = 0;
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/* Remove extension */
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for (size_t i = length; i--;) {
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if (dest[i] == '/') break;
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if (dest[i] == '.') {
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dest[i] = 0;
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break;
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}
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}
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/* Add new extension */
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strcat(dest, ext);
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}
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static retro_environment_t environ_cb;
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void retro_init(void)
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{
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frame_buf = (uint32_t*)malloc(VIDEO_PIXELS * sizeof(uint32_t));
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const char *dir = NULL;
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if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
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{
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snprintf(retro_base_directory, sizeof(retro_base_directory), "%s/sameboy", dir);
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}
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else snprintf(retro_base_directory, sizeof(retro_base_directory), "%s", ".");
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}
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void retro_deinit(void)
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{
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free(frame_buf);
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frame_buf = NULL;
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}
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unsigned retro_api_version(void)
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{
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return RETRO_API_VERSION;
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}
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void retro_set_controller_port_device(unsigned port, unsigned device)
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{
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log_cb(RETRO_LOG_INFO, "Plugging device %u into port %u.\n", device, port);
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}
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void retro_get_system_info(struct retro_system_info *info)
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{
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memset(info, 0, sizeof(*info));
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info->library_name = "sameboy";
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info->library_version = "0.1";
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info->need_fullpath = true;
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info->valid_extensions = "gb|gbc";
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}
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void retro_get_system_av_info(struct retro_system_av_info *info)
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{
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struct retro_game_geometry geom = { VIDEO_WIDTH, VIDEO_HEIGHT,VIDEO_WIDTH, VIDEO_HEIGHT ,160.0 / 144.0 };
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struct retro_system_timing timing = { 60.0, 44100.0 };
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info->geometry = geom;
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info->timing = timing;
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}
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static struct retro_rumble_interface rumble;
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void retro_set_environment(retro_environment_t cb)
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{
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environ_cb = cb;
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if (cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &logging))
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log_cb = logging.log;
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else
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log_cb = fallback_log;
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static const struct retro_controller_description controllers[] = {
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{ "Nintendo DS", RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 0) },
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};
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static const struct retro_controller_info ports[] = {
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{ controllers, 1 },
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{ NULL, 0 },
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};
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cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports);
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}
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void retro_set_audio_sample(retro_audio_sample_t cb)
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{
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audio_cb = cb;
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}
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void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb)
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{
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audio_batch_cb = cb;
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}
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void retro_set_input_poll(retro_input_poll_t cb)
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{
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input_poll_cb = cb;
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}
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void retro_set_input_state(retro_input_state_t cb)
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{
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input_state_cb = cb;
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}
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void retro_set_video_refresh(retro_video_refresh_t cb)
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{
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video_cb = cb;
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}
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void retro_reset(void)
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{
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}
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static void check_variables(void)
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{
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}
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void retro_run(void)
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{
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bool updated = false;
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if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
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check_variables();
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while(RLOOP==1)GB_run(&gb);
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RLOOP=1;
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video_cb(frame_buf, VIDEO_WIDTH, VIDEO_HEIGHT, 0);
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}
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bool retro_load_game(const struct retro_game_info *info)
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{
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struct retro_input_descriptor desc[] = {
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{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "Left" },
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{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "Up" },
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{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "Down" },
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{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "Right" },
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{ 0 },
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};
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char TMPC[512];
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environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
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enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_XRGB8888;
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if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt))
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{
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log_cb(RETRO_LOG_INFO, "XRGB8888 is not supported.\n");
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return false;
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}
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snprintf(retro_game_path, sizeof(retro_game_path), "%s", info->path);
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check_variables();
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char buf[256];
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int err = 0;
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if (strstr(info->path, "gbc"))
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{
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GB_init(&gb);
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snprintf(buf, sizeof(buf), "%s%cdmg_boot.bin", retro_base_directory, slash);
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err = GB_load_boot_rom(&gb, buf);
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}
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else
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{
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GB_init_cgb(&gb);
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snprintf(buf, sizeof(buf), "%s%ccgb_boot.bin", retro_base_directory, slash);
|
||||
err = GB_load_boot_rom(&gb, buf);
|
||||
}
|
||||
if (err)
|
||||
log_cb(RETRO_LOG_INFO, "Failed to load boot ROM %s %d\n", buf, err);
|
||||
(void)info;
|
||||
|
||||
if (GB_load_rom(&gb,info->path)) {
|
||||
perror("Failed to load ROM");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
signal(SIGINT, debugger_interrupt);
|
||||
|
||||
GB_set_vblank_callback(&gb, (GB_vblank_callback_t) vblank);
|
||||
GB_set_user_data(&gb, (void*)NULL);
|
||||
GB_set_pixels_output(&gb,(unsigned char *) frame_buf);
|
||||
GB_set_rgb_encode_callback(&gb, rgb_encode);
|
||||
|
||||
size_t path_length = strlen(retro_game_path);
|
||||
|
||||
/* Configure battery */
|
||||
replace_extension(retro_game_path, path_length, battery_save_path, ".sav");
|
||||
GB_load_battery(&gb, battery_save_path);
|
||||
printf("(%s)\n",battery_save_path);
|
||||
/* Configure symbols */
|
||||
|
||||
sprintf(TMPC,"%s/registers.sym",retro_base_directory);
|
||||
GB_debugger_load_symbol_file(&gb, TMPC);
|
||||
|
||||
replace_extension(retro_game_path, path_length, symbols_path, ".sym");
|
||||
GB_debugger_load_symbol_file(&gb, symbols_path);
|
||||
|
||||
GB_set_sample_rate(&gb, AUDIO_FREQUENCY);
|
||||
return true;
|
||||
}
|
||||
|
||||
void retro_unload_game(void)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
size_t retro_serialize_size(void)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
bool retro_serialize(void *data_, size_t size)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
bool retro_unserialize(const void *data_, size_t size)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
void *retro_get_memory_data(unsigned id)
|
||||
{
|
||||
(void)id;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
size_t retro_get_memory_size(unsigned id)
|
||||
{
|
||||
(void)id;
|
||||
return 0;
|
||||
}
|
||||
|
||||
void retro_cheat_reset(void)
|
||||
{}
|
||||
|
||||
void retro_cheat_set(unsigned index, bool enabled, const char *code)
|
||||
{
|
||||
(void)index;
|
||||
(void)enabled;
|
||||
(void)code;
|
||||
}
|
||||
|
||||
2129
libretro/libretro.h
Normal file
2129
libretro/libretro.h
Normal file
File diff suppressed because it is too large
Load Diff
5
libretro/link.T
Normal file
5
libretro/link.T
Normal file
@ -0,0 +1,5 @@
|
||||
{
|
||||
global: retro_*;
|
||||
local: *;
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user