From 3908ba9ba95accf0401150f95790e0330a0c94f0 Mon Sep 17 00:00:00 2001 From: radius Date: Tue, 7 Feb 2017 22:07:04 -0500 Subject: [PATCH 01/12] initial port --- Makefile | 141 ++++ NDS.cpp | 13 +- SPI.cpp | 7 +- libretro.cpp | 358 +++++++++ libretro.h | 2129 ++++++++++++++++++++++++++++++++++++++++++++++++++ libretro.o | Bin 0 -> 9384 bytes link.T | 5 + 7 files changed, 2648 insertions(+), 5 deletions(-) create mode 100644 Makefile create mode 100644 libretro.cpp create mode 100644 libretro.h create mode 100644 libretro.o create mode 100644 link.T diff --git a/Makefile b/Makefile new file mode 100644 index 00000000..1f501649 --- /dev/null +++ b/Makefile @@ -0,0 +1,141 @@ +STATIC_LINKING := 0 +AR := ar + +ifeq ($(platform),) +platform = unix +ifeq ($(shell uname -a),) + platform = win +else ifneq ($(findstring MINGW,$(shell uname -a)),) + platform = win +else ifneq ($(findstring Darwin,$(shell uname -a)),) + platform = osx +else ifneq ($(findstring win,$(shell uname -a)),) + platform = win +endif +endif + +# system platform +system_platform = unix +ifeq ($(shell uname -a),) + EXE_EXT = .exe + system_platform = win +else ifneq ($(findstring Darwin,$(shell uname -a)),) + system_platform = osx + arch = intel +ifeq ($(shell uname -p),powerpc) + arch = ppc +endif +else ifneq ($(findstring MINGW,$(shell uname -a)),) + system_platform = win +endif + +TARGET_NAME := melonds +LIBM = -lm + +ifeq ($(ARCHFLAGS),) +ifeq ($(archs),ppc) + ARCHFLAGS = -arch ppc -arch ppc64 +else + ARCHFLAGS = -arch i386 -arch x86_64 +endif +endif + +ifeq ($(platform), osx) +ifndef ($(NOUNIVERSAL)) + CXXFLAGS += $(ARCHFLAGS) + LFLAGS += $(ARCHFLAGS) +endif +endif + +ifeq ($(STATIC_LINKING), 1) +EXT := a +endif + +ifeq ($(platform), unix) + EXT ?= so + TARGET := $(TARGET_NAME)_libretro.$(EXT) + fpic := -fPIC + SHARED := -shared -Wl,--version-script=link.T -Wl,--no-undefined +else ifeq ($(platform), linux-portable) + TARGET := $(TARGET_NAME)_libretro.$(EXT) + fpic := -fPIC -nostdlib + SHARED := -shared -Wl,--version-script=link.T + LIBM := +else ifneq (,$(findstring osx,$(platform))) + TARGET := $(TARGET_NAME)_libretro.dylib + fpic := -fPIC + SHARED := -dynamiclib +else ifneq (,$(findstring ios,$(platform))) + TARGET := $(TARGET_NAME)_libretro_ios.dylib + fpic := -fPIC + SHARED := -dynamiclib + +ifeq ($(IOSSDK),) + IOSSDK := $(shell xcodebuild -version -sdk iphoneos Path) +endif + + DEFINES := -DIOS + CC = cc -arch armv7 -isysroot $(IOSSDK) +ifeq ($(platform),ios9) +CC += -miphoneos-version-min=8.0 +CXXFLAGS += -miphoneos-version-min=8.0 +else +CC += -miphoneos-version-min=5.0 +CXXFLAGS += -miphoneos-version-min=5.0 +endif +else ifneq (,$(findstring qnx,$(platform))) + TARGET := $(TARGET_NAME)_libretro_qnx.so + fpic := -fPIC + SHARED := -shared -Wl,--version-script=link.T -Wl,--no-undefined +else ifeq ($(platform), emscripten) + TARGET := $(TARGET_NAME)_libretro_emscripten.bc + fpic := -fPIC + SHARED := -shared -Wl,--version-script=link.T -Wl,--no-undefined +else ifeq ($(platform), vita) + TARGET := $(TARGET_NAME)_vita.a + CC = arm-vita-eabi-gcc + AR = arm-vita-eabi-ar + CXXFLAGS += -Wl,-q -Wall -O3 + STATIC_LINKING = 1 +else + CC = gcc + TARGET := $(TARGET_NAME)_libretro.dll + SHARED := -shared -static-libgcc -static-libstdc++ -s -Wl,--version-script=link.T -Wl,--no-undefined +endif + +LDFLAGS += $(LIBM) + +ifeq ($(DEBUG), 1) + CXXFLAGS += -O0 -g +else + CXXFLAGS += -O3 +endif + +OBJECTS := NDS.o ARM.o ARMInterpreter.o ARMInterpreter_ALU.o ARMInterpreter_Branch.o ARMInterpreter_LoadStore.o CP15.o DMA.o GPU.o GPU2D.o GPU3D.o NDSCart.o RTC.o SPI.o Wifi.o libretro.o +CXXFLAGS += -I../../libretro-common/include -Wall -pedantic $(fpic) + +ifneq (,$(findstring qnx,$(platform))) +CXXFLAGS += -Wc,-std=c99 +else +CXXFLAGS += -std=gnu99 +endif + +CXXFLAGS += -I../../libretro-common/include + +all: $(TARGET) + +$(TARGET): $(OBJECTS) +ifeq ($(STATIC_LINKING), 1) + $(AR) rcs $@ $(OBJECTS) +else + $(CXX) $(fpic) $(SHARED) $(INCLUDES) -o $@ $(OBJECTS) $(LDFLAGS) +endif + +%.o: %.c + $(CXX) $(CXXFLAGS) $(fpic) -c -o $@ $< + +clean: + rm -f $(OBJECTS) $(TARGET) + +.PHONY: clean + diff --git a/NDS.cpp b/NDS.cpp index 2ce57bdc..b8589b19 100644 --- a/NDS.cpp +++ b/NDS.cpp @@ -29,6 +29,7 @@ #include "RTC.h" #include "Wifi.h" +extern char retro_base_directory[4096]; namespace NDS { @@ -219,9 +220,11 @@ void Reset() FILE* f; u32 i; - f = fopen("bios9.bin", "rb"); + char path[2048]; + snprintf(path, sizeof(path), "%s/bios9.bin", retro_base_directory); + f = fopen(path, "rb"); if (!f) - printf("ARM9 BIOS not found\n"); + printf("ARM9 BIOS not found at %s\n"); else { fseek(f, 0, SEEK_SET); @@ -231,7 +234,8 @@ void Reset() fclose(f); } - f = fopen("bios7.bin", "rb"); + snprintf(path, sizeof(path), "%s/bios7.bin", retro_base_directory); + f = fopen(path, "rb"); if (!f) printf("ARM7 BIOS not found\n"); else @@ -307,7 +311,8 @@ void Reset() // test //LoadROM(); //LoadFirmware(); - if (NDSCart::LoadROM("rom/nsmb.nds")) + snprintf(path, sizeof(path), "%s/nsmb.nds", retro_base_directory); + if (NDSCart::LoadROM(path)) Running = true; // hax } diff --git a/SPI.cpp b/SPI.cpp index 618dcf5b..fd3a615e 100644 --- a/SPI.cpp +++ b/SPI.cpp @@ -21,6 +21,7 @@ #include "NDS.h" #include "SPI.h" +extern char retro_base_directory[4096]; namespace SPI_Firmware { @@ -37,6 +38,8 @@ u8 StatusReg; u32 Addr; + + u16 CRC16(u8* data, u32 len, u32 start) { u16 blarg[8] = {0xC0C1, 0xC181, 0xC301, 0xC601, 0xCC01, 0xD801, 0xF001, 0xA001}; @@ -85,7 +88,9 @@ void Reset() if (Firmware) delete[] Firmware; Firmware = NULL; - FILE* f = fopen("firmware.bin", "rb"); + char path[2047]; + snprintf(path, sizeof(path), "%s/firmware.bin", retro_base_directory); + FILE* f = fopen(path, "rb"); if (!f) { printf("firmware.bin not found\n"); diff --git a/libretro.cpp b/libretro.cpp new file mode 100644 index 00000000..94d03d27 --- /dev/null +++ b/libretro.cpp @@ -0,0 +1,358 @@ +#include +#include +#include +#include +#include +#include + +#include +#include +#include "NDS.h" +#include "GPU.h" +#include "libretro.h" + +static uint32_t *frame_buf; +static struct retro_log_callback logging; +static retro_log_printf_t log_cb; +static bool use_audio_cb; +static float last_aspect; +static float last_sample_rate; +char retro_base_directory[4096]; + +static void fallback_log(enum retro_log_level level, const char *fmt, ...) +{ + (void)level; + va_list va; + va_start(va, fmt); + vfprintf(stderr, fmt, va); + va_end(va); +} + + +static retro_environment_t environ_cb; + +void retro_init(void) +{ + frame_buf = (uint32_t*)malloc(320 * 240 * sizeof(uint32_t)); + const char *dir = NULL; + if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) + { + snprintf(retro_base_directory, sizeof(retro_base_directory), "%s", dir); + } + + NDS::Init(); +} + +void retro_deinit(void) +{ + free(frame_buf); + frame_buf = NULL; +} + +unsigned retro_api_version(void) +{ + return RETRO_API_VERSION; +} + +void retro_set_controller_port_device(unsigned port, unsigned device) +{ + log_cb(RETRO_LOG_INFO, "Plugging device %u into port %u.\n", device, port); +} + +void retro_get_system_info(struct retro_system_info *info) +{ + memset(info, 0, sizeof(*info)); + info->library_name = "melonDS"; + info->library_version = "what?"; + info->need_fullpath = true; + info->valid_extensions = "nds"; +} + +static retro_video_refresh_t video_cb; +static retro_audio_sample_t audio_cb; +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; + +void retro_get_system_av_info(struct retro_system_av_info *info) +{ + float aspect = 4.0f / 3.0f; + float sampling_rate = 30000.0f; + + info->geometry = (struct retro_game_geometry) { + .base_width = 320, + .base_height = 240, + .max_width = 320, + .max_height = 240, + .aspect_ratio = aspect, + }; + + last_aspect = aspect; + last_sample_rate = sampling_rate; +} + +static struct retro_rumble_interface rumble; + +void retro_set_environment(retro_environment_t cb) +{ + environ_cb = cb; + + bool no_content = true; + cb(RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME, &no_content); + + if (cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &logging)) + log_cb = logging.log; + else + log_cb = fallback_log; + + static const struct retro_controller_description controllers[] = { + { "Nintendo DS", 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); +} + +void retro_set_audio_sample(retro_audio_sample_t cb) +{ + audio_cb = cb; +} + +void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) +{ + audio_batch_cb = cb; +} + +void retro_set_input_poll(retro_input_poll_t cb) +{ + input_poll_cb = cb; +} + +void retro_set_input_state(retro_input_state_t cb) +{ + input_state_cb = cb; +} + +void retro_set_video_refresh(retro_video_refresh_t cb) +{ + video_cb = cb; +} + +static unsigned x_coord; +static unsigned y_coord; +static unsigned phase; +static int mouse_rel_x; +static int mouse_rel_y; + +void retro_reset(void) +{ + x_coord = 0; + y_coord = 0; +} + +static void update_input(void) +{ + int dir_x = 0; + int dir_y = 0; + + input_poll_cb(); + if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)) + dir_y--; + if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)) + dir_y++; + if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)) + dir_x--; + if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)) + dir_x++; + + if (input_state_cb(0, RETRO_DEVICE_KEYBOARD, 0, RETROK_RETURN)) + log_cb(RETRO_LOG_INFO, "Return key is pressed!\n"); + + if (input_state_cb(0, RETRO_DEVICE_KEYBOARD, 0, RETROK_x)) + log_cb(RETRO_LOG_INFO, "x key is pressed!\n"); + + int16_t mouse_x = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_X); + int16_t mouse_y = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y); + bool mouse_l = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT); + bool mouse_r = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT); + bool mouse_down = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN); + bool mouse_up = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELUP); + bool mouse_middle = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE); + if (mouse_x) + log_cb(RETRO_LOG_INFO, "Mouse X: %d\n", mouse_x); + if (mouse_y) + log_cb(RETRO_LOG_INFO, "Mouse Y: %d\n", mouse_y); + if (mouse_l) + log_cb(RETRO_LOG_INFO, "Mouse L pressed.\n"); + if (mouse_r) + log_cb(RETRO_LOG_INFO, "Mouse R pressed.\n"); + if (mouse_down) + log_cb(RETRO_LOG_INFO, "Mouse wheeldown pressed.\n"); + if (mouse_up) + log_cb(RETRO_LOG_INFO, "Mouse wheelup pressed.\n"); + if (mouse_middle) + log_cb(RETRO_LOG_INFO, "Mouse middle pressed.\n"); + + mouse_rel_x += mouse_x; + mouse_rel_y += mouse_y; + if (mouse_rel_x >= 310) + mouse_rel_x = 309; + else if (mouse_rel_x < 10) + mouse_rel_x = 10; + if (mouse_rel_y >= 230) + mouse_rel_y = 229; + else if (mouse_rel_y < 10) + mouse_rel_y = 10; + + bool pointer_pressed = input_state_cb(0, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_PRESSED); + int16_t pointer_x = input_state_cb(0, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X); + int16_t pointer_y = input_state_cb(0, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y); + if (pointer_pressed) + log_cb(RETRO_LOG_INFO, "Pointer: (%6d, %6d).\n", pointer_x, pointer_y); + + dir_x += input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X) / 5000; + dir_y += input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y) / 5000; + dir_x += input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X) / 5000; + dir_y += input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y) / 5000; + + x_coord = (x_coord + dir_x) & 31; + y_coord = (y_coord + dir_y) & 31; + + if (rumble.set_rumble_state) + { + static bool old_start; + static bool old_select; + uint16_t strength_strong = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2) ? 0x4000 : 0xffff; + uint16_t strength_weak = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2) ? 0x4000 : 0xffff; + bool start = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START); + bool select = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT); + if (old_start != start) + log_cb(RETRO_LOG_INFO, "Strong rumble: %s.\n", start ? "ON": "OFF"); + rumble.set_rumble_state(0, RETRO_RUMBLE_STRONG, start * strength_strong); + + if (old_select != select) + log_cb(RETRO_LOG_INFO, "Weak rumble: %s.\n", select ? "ON": "OFF"); + rumble.set_rumble_state(0, RETRO_RUMBLE_WEAK, select * strength_weak); + + old_start = start; + old_select = select; + } +} + +static void check_variables(void) +{ + +} + +static void audio_callback(void) +{ + for (unsigned i = 0; i < 30000 / 60; i++, phase++) + { + int16_t val = 0x800 * sinf(2.0f * M_PI * phase * 300.0f / 30000.0f); + audio_cb(val, val); + } + + phase %= 100; +} + +static void audio_set_state(bool enable) +{ + (void)enable; +} + +void retro_run(void) +{ + update_input(); + NDS::RunFrame(); + if (!use_audio_cb) + audio_callback(); + + bool updated = false; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) + check_variables(); +} + +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 }, + }; + + environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc); + + 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; + } + + struct retro_audio_callback audio_cb = { audio_callback, audio_set_state }; + use_audio_cb = environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_CALLBACK, &audio_cb); + + check_variables(); + + (void)info; + 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; +} + diff --git a/libretro.h b/libretro.h new file mode 100644 index 00000000..a4df6be4 --- /dev/null +++ b/libretro.h @@ -0,0 +1,2129 @@ +/* Copyright (C) 2010-2016 The RetroArch team + * + * --------------------------------------------------------------------------------------- + * The following license statement only applies to this libretro API header (libretro.h). + * --------------------------------------------------------------------------------------- + * + * Permission is hereby granted, free of charge, + * to any person obtaining a copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation the rights to + * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, + * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef LIBRETRO_H__ +#define LIBRETRO_H__ + +#include +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef __cplusplus +#if defined(_MSC_VER) && !defined(SN_TARGET_PS3) +/* Hack applied for MSVC when compiling in C89 mode + * as it isn't C99-compliant. */ +#define bool unsigned char +#define true 1 +#define false 0 +#else +#include +#endif +#endif + +#ifndef RETRO_CALLCONV +# if defined(__GNUC__) && defined(__i386__) && !defined(__x86_64__) +# define RETRO_CALLCONV __attribute__((cdecl)) +# elif defined(_MSC_VER) && defined(_M_X86) && !defined(_M_X64) +# define RETRO_CALLCONV __cdecl +# else +# define RETRO_CALLCONV /* all other platforms only have one calling convention each */ +# endif +#endif + +#ifndef RETRO_API +# if defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) +# ifdef RETRO_IMPORT_SYMBOLS +# ifdef __GNUC__ +# define RETRO_API RETRO_CALLCONV __attribute__((__dllimport__)) +# else +# define RETRO_API RETRO_CALLCONV __declspec(dllimport) +# endif +# else +# ifdef __GNUC__ +# define RETRO_API RETRO_CALLCONV __attribute__((__dllexport__)) +# else +# define RETRO_API RETRO_CALLCONV __declspec(dllexport) +# endif +# endif +# else +# if defined(__GNUC__) && __GNUC__ >= 4 && !defined(__CELLOS_LV2__) +# define RETRO_API RETRO_CALLCONV __attribute__((__visibility__("default"))) +# else +# define RETRO_API RETRO_CALLCONV +# endif +# endif +#endif + +/* Used for checking API/ABI mismatches that can break libretro + * implementations. + * It is not incremented for compatible changes to the API. + */ +#define RETRO_API_VERSION 1 + +/* + * Libretro's fundamental device abstractions. + * + * Libretro's input system consists of some standardized device types, + * such as a joypad (with/without analog), mouse, keyboard, lightgun + * and a pointer. + * + * The functionality of these devices are fixed, and individual cores + * map their own concept of a controller to libretro's abstractions. + * This makes it possible for frontends to map the abstract types to a + * real input device, and not having to worry about binding input + * correctly to arbitrary controller layouts. + */ + +#define RETRO_DEVICE_TYPE_SHIFT 8 +#define RETRO_DEVICE_MASK ((1 << RETRO_DEVICE_TYPE_SHIFT) - 1) +#define RETRO_DEVICE_SUBCLASS(base, id) (((id + 1) << RETRO_DEVICE_TYPE_SHIFT) | base) + +/* Input disabled. */ +#define RETRO_DEVICE_NONE 0 + +/* The JOYPAD is called RetroPad. It is essentially a Super Nintendo + * controller, but with additional L2/R2/L3/R3 buttons, similar to a + * PS1 DualShock. */ +#define RETRO_DEVICE_JOYPAD 1 + +/* The mouse is a simple mouse, similar to Super Nintendo's mouse. + * X and Y coordinates are reported relatively to last poll (poll callback). + * It is up to the libretro implementation to keep track of where the mouse + * pointer is supposed to be on the screen. + * The frontend must make sure not to interfere with its own hardware + * mouse pointer. + */ +#define RETRO_DEVICE_MOUSE 2 + +/* KEYBOARD device lets one poll for raw key pressed. + * It is poll based, so input callback will return with the current + * pressed state. + * For event/text based keyboard input, see + * RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK. + */ +#define RETRO_DEVICE_KEYBOARD 3 + +/* Lightgun X/Y coordinates are reported relatively to last poll, + * similar to mouse. */ +#define RETRO_DEVICE_LIGHTGUN 4 + +/* The ANALOG device is an extension to JOYPAD (RetroPad). + * Similar to DualShock it adds two analog sticks. + * This is treated as a separate device type as it returns values in the + * full analog range of [-0x8000, 0x7fff]. Positive X axis is right. + * Positive Y axis is down. + * Only use ANALOG type when polling for analog values of the axes. + */ +#define RETRO_DEVICE_ANALOG 5 + +/* Abstracts the concept of a pointing mechanism, e.g. touch. + * This allows libretro to query in absolute coordinates where on the + * screen a mouse (or something similar) is being placed. + * For a touch centric device, coordinates reported are the coordinates + * of the press. + * + * Coordinates in X and Y are reported as: + * [-0x7fff, 0x7fff]: -0x7fff corresponds to the far left/top of the screen, + * and 0x7fff corresponds to the far right/bottom of the screen. + * The "screen" is here defined as area that is passed to the frontend and + * later displayed on the monitor. + * + * The frontend is free to scale/resize this screen as it sees fit, however, + * (X, Y) = (-0x7fff, -0x7fff) will correspond to the top-left pixel of the + * game image, etc. + * + * To check if the pointer coordinates are valid (e.g. a touch display + * actually being touched), PRESSED returns 1 or 0. + * + * If using a mouse on a desktop, PRESSED will usually correspond to the + * left mouse button, but this is a frontend decision. + * PRESSED will only return 1 if the pointer is inside the game screen. + * + * For multi-touch, the index variable can be used to successively query + * more presses. + * If index = 0 returns true for _PRESSED, coordinates can be extracted + * with _X, _Y for index = 0. One can then query _PRESSED, _X, _Y with + * index = 1, and so on. + * Eventually _PRESSED will return false for an index. No further presses + * are registered at this point. */ +#define RETRO_DEVICE_POINTER 6 + +/* Buttons for the RetroPad (JOYPAD). + * The placement of these is equivalent to placements on the + * Super Nintendo controller. + * L2/R2/L3/R3 buttons correspond to the PS1 DualShock. */ +#define RETRO_DEVICE_ID_JOYPAD_B 0 +#define RETRO_DEVICE_ID_JOYPAD_Y 1 +#define RETRO_DEVICE_ID_JOYPAD_SELECT 2 +#define RETRO_DEVICE_ID_JOYPAD_START 3 +#define RETRO_DEVICE_ID_JOYPAD_UP 4 +#define RETRO_DEVICE_ID_JOYPAD_DOWN 5 +#define RETRO_DEVICE_ID_JOYPAD_LEFT 6 +#define RETRO_DEVICE_ID_JOYPAD_RIGHT 7 +#define RETRO_DEVICE_ID_JOYPAD_A 8 +#define RETRO_DEVICE_ID_JOYPAD_X 9 +#define RETRO_DEVICE_ID_JOYPAD_L 10 +#define RETRO_DEVICE_ID_JOYPAD_R 11 +#define RETRO_DEVICE_ID_JOYPAD_L2 12 +#define RETRO_DEVICE_ID_JOYPAD_R2 13 +#define RETRO_DEVICE_ID_JOYPAD_L3 14 +#define RETRO_DEVICE_ID_JOYPAD_R3 15 + +/* Index / Id values for ANALOG device. */ +#define RETRO_DEVICE_INDEX_ANALOG_LEFT 0 +#define RETRO_DEVICE_INDEX_ANALOG_RIGHT 1 +#define RETRO_DEVICE_ID_ANALOG_X 0 +#define RETRO_DEVICE_ID_ANALOG_Y 1 + +/* Id values for MOUSE. */ +#define RETRO_DEVICE_ID_MOUSE_X 0 +#define RETRO_DEVICE_ID_MOUSE_Y 1 +#define RETRO_DEVICE_ID_MOUSE_LEFT 2 +#define RETRO_DEVICE_ID_MOUSE_RIGHT 3 +#define RETRO_DEVICE_ID_MOUSE_WHEELUP 4 +#define RETRO_DEVICE_ID_MOUSE_WHEELDOWN 5 +#define RETRO_DEVICE_ID_MOUSE_MIDDLE 6 +#define RETRO_DEVICE_ID_MOUSE_HORIZ_WHEELUP 7 +#define RETRO_DEVICE_ID_MOUSE_HORIZ_WHEELDOWN 8 + +/* Id values for LIGHTGUN types. */ +#define RETRO_DEVICE_ID_LIGHTGUN_X 0 +#define RETRO_DEVICE_ID_LIGHTGUN_Y 1 +#define RETRO_DEVICE_ID_LIGHTGUN_TRIGGER 2 +#define RETRO_DEVICE_ID_LIGHTGUN_CURSOR 3 +#define RETRO_DEVICE_ID_LIGHTGUN_TURBO 4 +#define RETRO_DEVICE_ID_LIGHTGUN_PAUSE 5 +#define RETRO_DEVICE_ID_LIGHTGUN_START 6 + +/* Id values for POINTER. */ +#define RETRO_DEVICE_ID_POINTER_X 0 +#define RETRO_DEVICE_ID_POINTER_Y 1 +#define RETRO_DEVICE_ID_POINTER_PRESSED 2 + +/* Returned from retro_get_region(). */ +#define RETRO_REGION_NTSC 0 +#define RETRO_REGION_PAL 1 + +/* Id values for LANGUAGE */ +enum retro_language +{ + RETRO_LANGUAGE_ENGLISH = 0, + RETRO_LANGUAGE_JAPANESE = 1, + RETRO_LANGUAGE_FRENCH = 2, + RETRO_LANGUAGE_SPANISH = 3, + RETRO_LANGUAGE_GERMAN = 4, + RETRO_LANGUAGE_ITALIAN = 5, + RETRO_LANGUAGE_DUTCH = 6, + RETRO_LANGUAGE_PORTUGUESE = 7, + RETRO_LANGUAGE_RUSSIAN = 8, + RETRO_LANGUAGE_KOREAN = 9, + RETRO_LANGUAGE_CHINESE_TRADITIONAL = 10, + RETRO_LANGUAGE_CHINESE_SIMPLIFIED = 11, + RETRO_LANGUAGE_ESPERANTO = 12, + RETRO_LANGUAGE_POLISH = 13, + RETRO_LANGUAGE_LAST, + + /* Ensure sizeof(enum) == sizeof(int) */ + RETRO_LANGUAGE_DUMMY = INT_MAX +}; + +/* Passed to retro_get_memory_data/size(). + * If the memory type doesn't apply to the + * implementation NULL/0 can be returned. + */ +#define RETRO_MEMORY_MASK 0xff + +/* Regular save RAM. This RAM is usually found on a game cartridge, + * backed up by a battery. + * If save game data is too complex for a single memory buffer, + * the SAVE_DIRECTORY (preferably) or SYSTEM_DIRECTORY environment + * callback can be used. */ +#define RETRO_MEMORY_SAVE_RAM 0 + +/* Some games have a built-in clock to keep track of time. + * This memory is usually just a couple of bytes to keep track of time. + */ +#define RETRO_MEMORY_RTC 1 + +/* System ram lets a frontend peek into a game systems main RAM. */ +#define RETRO_MEMORY_SYSTEM_RAM 2 + +/* Video ram lets a frontend peek into a game systems video RAM (VRAM). */ +#define RETRO_MEMORY_VIDEO_RAM 3 + +/* Keysyms used for ID in input state callback when polling RETRO_KEYBOARD. */ +enum retro_key +{ + RETROK_UNKNOWN = 0, + RETROK_FIRST = 0, + RETROK_BACKSPACE = 8, + RETROK_TAB = 9, + RETROK_CLEAR = 12, + RETROK_RETURN = 13, + RETROK_PAUSE = 19, + RETROK_ESCAPE = 27, + RETROK_SPACE = 32, + RETROK_EXCLAIM = 33, + RETROK_QUOTEDBL = 34, + RETROK_HASH = 35, + RETROK_DOLLAR = 36, + RETROK_AMPERSAND = 38, + RETROK_QUOTE = 39, + RETROK_LEFTPAREN = 40, + RETROK_RIGHTPAREN = 41, + RETROK_ASTERISK = 42, + RETROK_PLUS = 43, + RETROK_COMMA = 44, + RETROK_MINUS = 45, + RETROK_PERIOD = 46, + RETROK_SLASH = 47, + RETROK_0 = 48, + RETROK_1 = 49, + RETROK_2 = 50, + RETROK_3 = 51, + RETROK_4 = 52, + RETROK_5 = 53, + RETROK_6 = 54, + RETROK_7 = 55, + RETROK_8 = 56, + RETROK_9 = 57, + RETROK_COLON = 58, + RETROK_SEMICOLON = 59, + RETROK_LESS = 60, + RETROK_EQUALS = 61, + RETROK_GREATER = 62, + RETROK_QUESTION = 63, + RETROK_AT = 64, + RETROK_LEFTBRACKET = 91, + RETROK_BACKSLASH = 92, + RETROK_RIGHTBRACKET = 93, + RETROK_CARET = 94, + RETROK_UNDERSCORE = 95, + RETROK_BACKQUOTE = 96, + RETROK_a = 97, + RETROK_b = 98, + RETROK_c = 99, + RETROK_d = 100, + RETROK_e = 101, + RETROK_f = 102, + RETROK_g = 103, + RETROK_h = 104, + RETROK_i = 105, + RETROK_j = 106, + RETROK_k = 107, + RETROK_l = 108, + RETROK_m = 109, + RETROK_n = 110, + RETROK_o = 111, + RETROK_p = 112, + RETROK_q = 113, + RETROK_r = 114, + RETROK_s = 115, + RETROK_t = 116, + RETROK_u = 117, + RETROK_v = 118, + RETROK_w = 119, + RETROK_x = 120, + RETROK_y = 121, + RETROK_z = 122, + RETROK_DELETE = 127, + + RETROK_KP0 = 256, + RETROK_KP1 = 257, + RETROK_KP2 = 258, + RETROK_KP3 = 259, + RETROK_KP4 = 260, + RETROK_KP5 = 261, + RETROK_KP6 = 262, + RETROK_KP7 = 263, + RETROK_KP8 = 264, + RETROK_KP9 = 265, + RETROK_KP_PERIOD = 266, + RETROK_KP_DIVIDE = 267, + RETROK_KP_MULTIPLY = 268, + RETROK_KP_MINUS = 269, + RETROK_KP_PLUS = 270, + RETROK_KP_ENTER = 271, + RETROK_KP_EQUALS = 272, + + RETROK_UP = 273, + RETROK_DOWN = 274, + RETROK_RIGHT = 275, + RETROK_LEFT = 276, + RETROK_INSERT = 277, + RETROK_HOME = 278, + RETROK_END = 279, + RETROK_PAGEUP = 280, + RETROK_PAGEDOWN = 281, + + RETROK_F1 = 282, + RETROK_F2 = 283, + RETROK_F3 = 284, + RETROK_F4 = 285, + RETROK_F5 = 286, + RETROK_F6 = 287, + RETROK_F7 = 288, + RETROK_F8 = 289, + RETROK_F9 = 290, + RETROK_F10 = 291, + RETROK_F11 = 292, + RETROK_F12 = 293, + RETROK_F13 = 294, + RETROK_F14 = 295, + RETROK_F15 = 296, + + RETROK_NUMLOCK = 300, + RETROK_CAPSLOCK = 301, + RETROK_SCROLLOCK = 302, + RETROK_RSHIFT = 303, + RETROK_LSHIFT = 304, + RETROK_RCTRL = 305, + RETROK_LCTRL = 306, + RETROK_RALT = 307, + RETROK_LALT = 308, + RETROK_RMETA = 309, + RETROK_LMETA = 310, + RETROK_LSUPER = 311, + RETROK_RSUPER = 312, + RETROK_MODE = 313, + RETROK_COMPOSE = 314, + + RETROK_HELP = 315, + RETROK_PRINT = 316, + RETROK_SYSREQ = 317, + RETROK_BREAK = 318, + RETROK_MENU = 319, + RETROK_POWER = 320, + RETROK_EURO = 321, + RETROK_UNDO = 322, + + RETROK_LAST, + + RETROK_DUMMY = INT_MAX /* Ensure sizeof(enum) == sizeof(int) */ +}; + +enum retro_mod +{ + RETROKMOD_NONE = 0x0000, + + RETROKMOD_SHIFT = 0x01, + RETROKMOD_CTRL = 0x02, + RETROKMOD_ALT = 0x04, + RETROKMOD_META = 0x08, + + RETROKMOD_NUMLOCK = 0x10, + RETROKMOD_CAPSLOCK = 0x20, + RETROKMOD_SCROLLOCK = 0x40, + + RETROKMOD_DUMMY = INT_MAX /* Ensure sizeof(enum) == sizeof(int) */ +}; + +/* If set, this call is not part of the public libretro API yet. It can + * change or be removed at any time. */ +#define RETRO_ENVIRONMENT_EXPERIMENTAL 0x10000 +/* Environment callback to be used internally in frontend. */ +#define RETRO_ENVIRONMENT_PRIVATE 0x20000 + +/* Environment commands. */ +#define RETRO_ENVIRONMENT_SET_ROTATION 1 /* const unsigned * -- + * Sets screen rotation of graphics. + * Is only implemented if rotation can be accelerated by hardware. + * Valid values are 0, 1, 2, 3, which rotates screen by 0, 90, 180, + * 270 degrees counter-clockwise respectively. + */ +#define RETRO_ENVIRONMENT_GET_OVERSCAN 2 /* bool * -- + * Boolean value whether or not the implementation should use overscan, + * or crop away overscan. + */ +#define RETRO_ENVIRONMENT_GET_CAN_DUPE 3 /* bool * -- + * Boolean value whether or not frontend supports frame duping, + * passing NULL to video frame callback. + */ + + /* Environ 4, 5 are no longer supported (GET_VARIABLE / SET_VARIABLES), + * and reserved to avoid possible ABI clash. + */ + +#define RETRO_ENVIRONMENT_SET_MESSAGE 6 /* const struct retro_message * -- + * Sets a message to be displayed in implementation-specific manner + * for a certain amount of 'frames'. + * Should not be used for trivial messages, which should simply be + * logged via RETRO_ENVIRONMENT_GET_LOG_INTERFACE (or as a + * fallback, stderr). + */ +#define RETRO_ENVIRONMENT_SHUTDOWN 7 /* N/A (NULL) -- + * Requests the frontend to shutdown. + * Should only be used if game has a specific + * way to shutdown the game from a menu item or similar. + */ +#define RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL 8 + /* const unsigned * -- + * Gives a hint to the frontend how demanding this implementation + * is on a system. E.g. reporting a level of 2 means + * this implementation should run decently on all frontends + * of level 2 and up. + * + * It can be used by the frontend to potentially warn + * about too demanding implementations. + * + * The levels are "floating". + * + * This function can be called on a per-game basis, + * as certain games an implementation can play might be + * particularly demanding. + * If called, it should be called in retro_load_game(). + */ +#define RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY 9 + /* const char ** -- + * Returns the "system" directory of the frontend. + * This directory can be used to store system specific + * content such as BIOSes, configuration data, etc. + * The returned value can be NULL. + * If so, no such directory is defined, + * and it's up to the implementation to find a suitable directory. + * + * NOTE: Some cores used this folder also for "save" data such as + * memory cards, etc, for lack of a better place to put it. + * This is now discouraged, and if possible, cores should try to + * use the new GET_SAVE_DIRECTORY. + */ +#define RETRO_ENVIRONMENT_SET_PIXEL_FORMAT 10 + /* const enum retro_pixel_format * -- + * Sets the internal pixel format used by the implementation. + * The default pixel format is RETRO_PIXEL_FORMAT_0RGB1555. + * This pixel format however, is deprecated (see enum retro_pixel_format). + * If the call returns false, the frontend does not support this pixel + * format. + * + * This function should be called inside retro_load_game() or + * retro_get_system_av_info(). + */ +#define RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS 11 + /* const struct retro_input_descriptor * -- + * Sets an array of retro_input_descriptors. + * It is up to the frontend to present this in a usable way. + * The array is terminated by retro_input_descriptor::description + * being set to NULL. + * This function can be called at any time, but it is recommended + * to call it as early as possible. + */ +#define RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK 12 + /* const struct retro_keyboard_callback * -- + * Sets a callback function used to notify core about keyboard events. + */ +#define RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE 13 + /* const struct retro_disk_control_callback * -- + * Sets an interface which frontend can use to eject and insert + * disk images. + * This is used for games which consist of multiple images and + * must be manually swapped out by the user (e.g. PSX). + */ +#define RETRO_ENVIRONMENT_SET_HW_RENDER 14 + /* struct retro_hw_render_callback * -- + * Sets an interface to let a libretro core render with + * hardware acceleration. + * Should be called in retro_load_game(). + * If successful, libretro cores will be able to render to a + * frontend-provided framebuffer. + * The size of this framebuffer will be at least as large as + * max_width/max_height provided in get_av_info(). + * If HW rendering is used, pass only RETRO_HW_FRAME_BUFFER_VALID or + * NULL to retro_video_refresh_t. + */ +#define RETRO_ENVIRONMENT_GET_VARIABLE 15 + /* struct retro_variable * -- + * Interface to acquire user-defined information from environment + * that cannot feasibly be supported in a multi-system way. + * 'key' should be set to a key which has already been set by + * SET_VARIABLES. + * 'data' will be set to a value or NULL. + */ +#define RETRO_ENVIRONMENT_SET_VARIABLES 16 + /* const struct retro_variable * -- + * Allows an implementation to signal the environment + * which variables it might want to check for later using + * GET_VARIABLE. + * This allows the frontend to present these variables to + * a user dynamically. + * This should be called as early as possible (ideally in + * retro_set_environment). + * + * 'data' points to an array of retro_variable structs + * terminated by a { NULL, NULL } element. + * retro_variable::key should be namespaced to not collide + * with other implementations' keys. E.g. A core called + * 'foo' should use keys named as 'foo_option'. + * retro_variable::value should contain a human readable + * description of the key as well as a '|' delimited list + * of expected values. + * + * The number of possible options should be very limited, + * i.e. it should be feasible to cycle through options + * without a keyboard. + * + * First entry should be treated as a default. + * + * Example entry: + * { "foo_option", "Speed hack coprocessor X; false|true" } + * + * Text before first ';' is description. This ';' must be + * followed by a space, and followed by a list of possible + * values split up with '|'. + * + * Only strings are operated on. The possible values will + * generally be displayed and stored as-is by the frontend. + */ +#define RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE 17 + /* bool * -- + * Result is set to true if some variables are updated by + * frontend since last call to RETRO_ENVIRONMENT_GET_VARIABLE. + * Variables should be queried with GET_VARIABLE. + */ +#define RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME 18 + /* const bool * -- + * If true, the libretro implementation supports calls to + * retro_load_game() with NULL as argument. + * Used by cores which can run without particular game data. + * This should be called within retro_set_environment() only. + */ +#define RETRO_ENVIRONMENT_GET_LIBRETRO_PATH 19 + /* const char ** -- + * Retrieves the absolute path from where this libretro + * implementation was loaded. + * NULL is returned if the libretro was loaded statically + * (i.e. linked statically to frontend), or if the path cannot be + * determined. + * Mostly useful in cooperation with SET_SUPPORT_NO_GAME as assets can + * be loaded without ugly hacks. + */ + + /* Environment 20 was an obsolete version of SET_AUDIO_CALLBACK. + * It was not used by any known core at the time, + * and was removed from the API. */ +#define RETRO_ENVIRONMENT_SET_AUDIO_CALLBACK 22 + /* const struct retro_audio_callback * -- + * Sets an interface which is used to notify a libretro core about audio + * being available for writing. + * The callback can be called from any thread, so a core using this must + * have a thread safe audio implementation. + * It is intended for games where audio and video are completely + * asynchronous and audio can be generated on the fly. + * This interface is not recommended for use with emulators which have + * highly synchronous audio. + * + * The callback only notifies about writability; the libretro core still + * has to call the normal audio callbacks + * to write audio. The audio callbacks must be called from within the + * notification callback. + * The amount of audio data to write is up to the implementation. + * Generally, the audio callback will be called continously in a loop. + * + * Due to thread safety guarantees and lack of sync between audio and + * video, a frontend can selectively disallow this interface based on + * internal configuration. A core using this interface must also + * implement the "normal" audio interface. + * + * A libretro core using SET_AUDIO_CALLBACK should also make use of + * SET_FRAME_TIME_CALLBACK. + */ +#define RETRO_ENVIRONMENT_SET_FRAME_TIME_CALLBACK 21 + /* const struct retro_frame_time_callback * -- + * Lets the core know how much time has passed since last + * invocation of retro_run(). + * The frontend can tamper with the timing to fake fast-forward, + * slow-motion, frame stepping, etc. + * In this case the delta time will use the reference value + * in frame_time_callback.. + */ +#define RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE 23 + /* struct retro_rumble_interface * -- + * Gets an interface which is used by a libretro core to set + * state of rumble motors in controllers. + * A strong and weak motor is supported, and they can be + * controlled indepedently. + */ +#define RETRO_ENVIRONMENT_GET_INPUT_DEVICE_CAPABILITIES 24 + /* uint64_t * -- + * Gets a bitmask telling which device type are expected to be + * handled properly in a call to retro_input_state_t. + * Devices which are not handled or recognized always return + * 0 in retro_input_state_t. + * Example bitmask: caps = (1 << RETRO_DEVICE_JOYPAD) | (1 << RETRO_DEVICE_ANALOG). + * Should only be called in retro_run(). + */ +#define RETRO_ENVIRONMENT_GET_SENSOR_INTERFACE (25 | RETRO_ENVIRONMENT_EXPERIMENTAL) + /* struct retro_sensor_interface * -- + * Gets access to the sensor interface. + * The purpose of this interface is to allow + * setting state related to sensors such as polling rate, + * enabling/disable it entirely, etc. + * Reading sensor state is done via the normal + * input_state_callback API. + */ +#define RETRO_ENVIRONMENT_GET_CAMERA_INTERFACE (26 | RETRO_ENVIRONMENT_EXPERIMENTAL) + /* struct retro_camera_callback * -- + * Gets an interface to a video camera driver. + * A libretro core can use this interface to get access to a + * video camera. + * New video frames are delivered in a callback in same + * thread as retro_run(). + * + * GET_CAMERA_INTERFACE should be called in retro_load_game(). + * + * Depending on the camera implementation used, camera frames + * will be delivered as a raw framebuffer, + * or as an OpenGL texture directly. + * + * The core has to tell the frontend here which types of + * buffers can be handled properly. + * An OpenGL texture can only be handled when using a + * libretro GL core (SET_HW_RENDER). + * It is recommended to use a libretro GL core when + * using camera interface. + * + * The camera is not started automatically. The retrieved start/stop + * functions must be used to explicitly + * start and stop the camera driver. + */ +#define RETRO_ENVIRONMENT_GET_LOG_INTERFACE 27 + /* struct retro_log_callback * -- + * Gets an interface for logging. This is useful for + * logging in a cross-platform way + * as certain platforms cannot use use stderr for logging. + * It also allows the frontend to + * show logging information in a more suitable way. + * If this interface is not used, libretro cores should + * log to stderr as desired. + */ +#define RETRO_ENVIRONMENT_GET_PERF_INTERFACE 28 + /* struct retro_perf_callback * -- + * Gets an interface for performance counters. This is useful + * for performance logging in a cross-platform way and for detecting + * architecture-specific features, such as SIMD support. + */ +#define RETRO_ENVIRONMENT_GET_LOCATION_INTERFACE 29 + /* struct retro_location_callback * -- + * Gets access to the location interface. + * The purpose of this interface is to be able to retrieve + * location-based information from the host device, + * such as current latitude / longitude. + */ +#define RETRO_ENVIRONMENT_GET_CONTENT_DIRECTORY 30 /* Old name, kept for compatibility. */ +#define RETRO_ENVIRONMENT_GET_CORE_ASSETS_DIRECTORY 30 + /* const char ** -- + * Returns the "core assets" directory of the frontend. + * This directory can be used to store specific assets that the + * core relies upon, such as art assets, + * input data, etc etc. + * The returned value can be NULL. + * If so, no such directory is defined, + * and it's up to the implementation to find a suitable directory. + */ +#define RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY 31 + /* const char ** -- + * Returns the "save" directory of the frontend. + * This directory can be used to store SRAM, memory cards, + * high scores, etc, if the libretro core + * cannot use the regular memory interface (retro_get_memory_data()). + * + * NOTE: libretro cores used to check GET_SYSTEM_DIRECTORY for + * similar things before. + * They should still check GET_SYSTEM_DIRECTORY if they want to + * be backwards compatible. + * The path here can be NULL. It should only be non-NULL if the + * frontend user has set a specific save path. + */ +#define RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO 32 + /* const struct retro_system_av_info * -- + * Sets a new av_info structure. This can only be called from + * within retro_run(). + * This should *only* be used if the core is completely altering the + * internal resolutions, aspect ratios, timings, sampling rate, etc. + * Calling this can require a full reinitialization of video/audio + * drivers in the frontend, + * + * so it is important to call it very sparingly, and usually only with + * the users explicit consent. + * An eventual driver reinitialize will happen so that video and + * audio callbacks + * happening after this call within the same retro_run() call will + * target the newly initialized driver. + * + * This callback makes it possible to support configurable resolutions + * in games, which can be useful to + * avoid setting the "worst case" in max_width/max_height. + * + * ***HIGHLY RECOMMENDED*** Do not call this callback every time + * resolution changes in an emulator core if it's + * expected to be a temporary change, for the reasons of possible + * driver reinitialization. + * This call is not a free pass for not trying to provide + * correct values in retro_get_system_av_info(). If you need to change + * things like aspect ratio or nominal width/height, + * use RETRO_ENVIRONMENT_SET_GEOMETRY, which is a softer variant + * of SET_SYSTEM_AV_INFO. + * + * If this returns false, the frontend does not acknowledge a + * changed av_info struct. + */ +#define RETRO_ENVIRONMENT_SET_PROC_ADDRESS_CALLBACK 33 + /* const struct retro_get_proc_address_interface * -- + * Allows a libretro core to announce support for the + * get_proc_address() interface. + * This interface allows for a standard way to extend libretro where + * use of environment calls are too indirect, + * e.g. for cases where the frontend wants to call directly into the core. + * + * If a core wants to expose this interface, SET_PROC_ADDRESS_CALLBACK + * **MUST** be called from within retro_set_environment(). + */ +#define RETRO_ENVIRONMENT_SET_SUBSYSTEM_INFO 34 + /* const struct retro_subsystem_info * -- + * This environment call introduces the concept of libretro "subsystems". + * A subsystem is a variant of a libretro core which supports + * different kinds of games. + * The purpose of this is to support e.g. emulators which might + * have special needs, e.g. Super Nintendo's Super GameBoy, Sufami Turbo. + * It can also be used to pick among subsystems in an explicit way + * if the libretro implementation is a multi-system emulator itself. + * + * Loading a game via a subsystem is done with retro_load_game_special(), + * and this environment call allows a libretro core to expose which + * subsystems are supported for use with retro_load_game_special(). + * A core passes an array of retro_game_special_info which is terminated + * with a zeroed out retro_game_special_info struct. + * + * If a core wants to use this functionality, SET_SUBSYSTEM_INFO + * **MUST** be called from within retro_set_environment(). + */ +#define RETRO_ENVIRONMENT_SET_CONTROLLER_INFO 35 + /* const struct retro_controller_info * -- + * This environment call lets a libretro core tell the frontend + * which controller types are recognized in calls to + * retro_set_controller_port_device(). + * + * Some emulators such as Super Nintendo + * support multiple lightgun types which must be specifically + * selected from. + * It is therefore sometimes necessary for a frontend to be able + * to tell the core about a special kind of input device which is + * not covered by the libretro input API. + * + * In order for a frontend to understand the workings of an input device, + * it must be a specialized type + * of the generic device types already defined in the libretro API. + * + * Which devices are supported can vary per input port. + * The core must pass an array of const struct retro_controller_info which + * is terminated with a blanked out struct. Each element of the struct + * corresponds to an ascending port index to + * retro_set_controller_port_device(). + * Even if special device types are set in the libretro core, + * libretro should only poll input based on the base input device types. + */ +#define RETRO_ENVIRONMENT_SET_MEMORY_MAPS (36 | RETRO_ENVIRONMENT_EXPERIMENTAL) + /* const struct retro_memory_map * -- + * This environment call lets a libretro core tell the frontend + * about the memory maps this core emulates. + * This can be used to implement, for example, cheats in a core-agnostic way. + * + * Should only be used by emulators; it doesn't make much sense for + * anything else. + * It is recommended to expose all relevant pointers through + * retro_get_memory_* as well. + * + * Can be called from retro_init and retro_load_game. + */ +#define RETRO_ENVIRONMENT_SET_GEOMETRY 37 + /* const struct retro_game_geometry * -- + * This environment call is similar to SET_SYSTEM_AV_INFO for changing + * video parameters, but provides a guarantee that drivers will not be + * reinitialized. + * This can only be called from within retro_run(). + * + * The purpose of this call is to allow a core to alter nominal + * width/heights as well as aspect ratios on-the-fly, which can be + * useful for some emulators to change in run-time. + * + * max_width/max_height arguments are ignored and cannot be changed + * with this call as this could potentially require a reinitialization or a + * non-constant time operation. + * If max_width/max_height are to be changed, SET_SYSTEM_AV_INFO is required. + * + * A frontend must guarantee that this environment call completes in + * constant time. + */ +#define RETRO_ENVIRONMENT_GET_USERNAME 38 + /* const char ** + * Returns the specified username of the frontend, if specified by the user. + * This username can be used as a nickname for a core that has online facilities + * or any other mode where personalization of the user is desirable. + * The returned value can be NULL. + * If this environ callback is used by a core that requires a valid username, + * a default username should be specified by the core. + */ +#define RETRO_ENVIRONMENT_GET_LANGUAGE 39 + /* unsigned * -- + * Returns the specified language of the frontend, if specified by the user. + * It can be used by the core for localization purposes. + */ +#define RETRO_ENVIRONMENT_GET_CURRENT_SOFTWARE_FRAMEBUFFER (40 | RETRO_ENVIRONMENT_EXPERIMENTAL) + /* struct retro_framebuffer * -- + * Returns a preallocated framebuffer which the core can use for rendering + * the frame into when not using SET_HW_RENDER. + * The framebuffer returned from this call must not be used + * after the current call to retro_run() returns. + * + * The goal of this call is to allow zero-copy behavior where a core + * can render directly into video memory, avoiding extra bandwidth cost by copying + * memory from core to video memory. + * + * If this call succeeds and the core renders into it, + * the framebuffer pointer and pitch can be passed to retro_video_refresh_t. + * If the buffer from GET_CURRENT_SOFTWARE_FRAMEBUFFER is to be used, + * the core must pass the exact + * same pointer as returned by GET_CURRENT_SOFTWARE_FRAMEBUFFER; + * i.e. passing a pointer which is offset from the + * buffer is undefined. The width, height and pitch parameters + * must also match exactly to the values obtained from GET_CURRENT_SOFTWARE_FRAMEBUFFER. + * + * It is possible for a frontend to return a different pixel format + * than the one used in SET_PIXEL_FORMAT. This can happen if the frontend + * needs to perform conversion. + * + * It is still valid for a core to render to a different buffer + * even if GET_CURRENT_SOFTWARE_FRAMEBUFFER succeeds. + * + * A frontend must make sure that the pointer obtained from this function is + * writeable (and readable). + */ + +enum retro_hw_render_interface_type +{ + RETRO_HW_RENDER_INTERFACE_VULKAN = 0, + RETRO_HW_RENDER_INTERFACE_DUMMY = INT_MAX +}; + +/* Base struct. All retro_hw_render_interface_* types + * contain at least these fields. */ +struct retro_hw_render_interface +{ + enum retro_hw_render_interface_type interface_type; + unsigned interface_version; +}; +#define RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE (41 | RETRO_ENVIRONMENT_EXPERIMENTAL) + /* const struct retro_hw_render_interface ** -- + * Returns an API specific rendering interface for accessing API specific data. + * Not all HW rendering APIs support or need this. + * The contents of the returned pointer is specific to the rendering API + * being used. See the various headers like libretro_vulkan.h, etc. + * + * GET_HW_RENDER_INTERFACE cannot be called before context_reset has been called. + * Similarly, after context_destroyed callback returns, + * the contents of the HW_RENDER_INTERFACE are invalidated. + */ + +#define RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS (42 | RETRO_ENVIRONMENT_EXPERIMENTAL) + /* const bool * -- + * If true, the libretro implementation supports achievements + * either via memory descriptors set with RETRO_ENVIRONMENT_SET_MEMORY_MAPS + * or via retro_get_memory_data/retro_get_memory_size. + * + * This must be called before the first call to retro_run. + */ + +enum retro_hw_render_context_negotiation_interface_type +{ + RETRO_HW_RENDER_CONTEXT_NEGOTIATION_INTERFACE_VULKAN = 0, + RETRO_HW_RENDER_CONTEXT_NEGOTIATION_INTERFACE_DUMMY = INT_MAX +}; + +/* Base struct. All retro_hw_render_context_negotiation_interface_* types + * contain at least these fields. */ +struct retro_hw_render_context_negotiation_interface +{ + enum retro_hw_render_context_negotiation_interface_type interface_type; + unsigned interface_version; +}; +#define RETRO_ENVIRONMENT_SET_HW_RENDER_CONTEXT_NEGOTIATION_INTERFACE (43 | RETRO_ENVIRONMENT_EXPERIMENTAL) + /* const struct retro_hw_render_context_negotiation_interface * -- + * Sets an interface which lets the libretro core negotiate with frontend how a context is created. + * The semantics of this interface depends on which API is used in SET_HW_RENDER earlier. + * This interface will be used when the frontend is trying to create a HW rendering context, + * so it will be used after SET_HW_RENDER, but before the context_reset callback. + */ + +#define RETRO_MEMDESC_CONST (1 << 0) /* The frontend will never change this memory area once retro_load_game has returned. */ +#define RETRO_MEMDESC_BIGENDIAN (1 << 1) /* The memory area contains big endian data. Default is little endian. */ +#define RETRO_MEMDESC_ALIGN_2 (1 << 16) /* All memory access in this area is aligned to their own size, or 2, whichever is smaller. */ +#define RETRO_MEMDESC_ALIGN_4 (2 << 16) +#define RETRO_MEMDESC_ALIGN_8 (3 << 16) +#define RETRO_MEMDESC_MINSIZE_2 (1 << 24) /* All memory in this region is accessed at least 2 bytes at the time. */ +#define RETRO_MEMDESC_MINSIZE_4 (2 << 24) +#define RETRO_MEMDESC_MINSIZE_8 (3 << 24) +struct retro_memory_descriptor +{ + uint64_t flags; + + /* Pointer to the start of the relevant ROM or RAM chip. + * It's strongly recommended to use 'offset' if possible, rather than + * doing math on the pointer. + * + * If the same byte is mapped my multiple descriptors, their descriptors + * must have the same pointer. + * If 'start' does not point to the first byte in the pointer, put the + * difference in 'offset' instead. + * + * May be NULL if there's nothing usable here (e.g. hardware registers and + * open bus). No flags should be set if the pointer is NULL. + * It's recommended to minimize the number of descriptors if possible, + * but not mandatory. */ + void *ptr; + size_t offset; + + /* This is the location in the emulated address space + * where the mapping starts. */ + size_t start; + + /* Which bits must be same as in 'start' for this mapping to apply. + * The first memory descriptor to claim a certain byte is the one + * that applies. + * A bit which is set in 'start' must also be set in this. + * Can be zero, in which case each byte is assumed mapped exactly once. + * In this case, 'len' must be a power of two. */ + size_t select; + + /* If this is nonzero, the set bits are assumed not connected to the + * memory chip's address pins. */ + size_t disconnect; + + /* This one tells the size of the current memory area. + * If, after start+disconnect are applied, the address is higher than + * this, the highest bit of the address is cleared. + * + * If the address is still too high, the next highest bit is cleared. + * Can be zero, in which case it's assumed to be infinite (as limited + * by 'select' and 'disconnect'). */ + size_t len; + + /* To go from emulated address to physical address, the following + * order applies: + * Subtract 'start', pick off 'disconnect', apply 'len', add 'offset'. */ + + /* The address space name must consist of only a-zA-Z0-9_-, + * should be as short as feasible (maximum length is 8 plus the NUL), + * and may not be any other address space plus one or more 0-9A-F + * at the end. + * However, multiple memory descriptors for the same address space is + * allowed, and the address space name can be empty. NULL is treated + * as empty. + * + * Address space names are case sensitive, but avoid lowercase if possible. + * The same pointer may exist in multiple address spaces. + * + * Examples: + * blank+blank - valid (multiple things may be mapped in the same namespace) + * 'Sp'+'Sp' - valid (multiple things may be mapped in the same namespace) + * 'A'+'B' - valid (neither is a prefix of each other) + * 'S'+blank - valid ('S' is not in 0-9A-F) + * 'a'+blank - valid ('a' is not in 0-9A-F) + * 'a'+'A' - valid (neither is a prefix of each other) + * 'AR'+blank - valid ('R' is not in 0-9A-F) + * 'ARB'+blank - valid (the B can't be part of the address either, because + * there is no namespace 'AR') + * blank+'B' - not valid, because it's ambigous which address space B1234 + * would refer to. + * The length can't be used for that purpose; the frontend may want + * to append arbitrary data to an address, without a separator. */ + const char *addrspace; + + /* TODO: When finalizing this one, add a description field, which should be + * "WRAM" or something roughly equally long. */ + + /* TODO: When finalizing this one, replace 'select' with 'limit', which tells + * which bits can vary and still refer to the same address (limit = ~select). + * TODO: limit? range? vary? something else? */ + + /* TODO: When finalizing this one, if 'len' is above what 'select' (or + * 'limit') allows, it's bankswitched. Bankswitched data must have both 'len' + * and 'select' != 0, and the mappings don't tell how the system switches the + * banks. */ + + /* TODO: When finalizing this one, fix the 'len' bit removal order. + * For len=0x1800, pointer 0x1C00 should go to 0x1400, not 0x0C00. + * Algorithm: Take bits highest to lowest, but if it goes above len, clear + * the most recent addition and continue on the next bit. + * TODO: Can the above be optimized? Is "remove the lowest bit set in both + * pointer and 'len'" equivalent? */ + + /* TODO: Some emulators (MAME?) emulate big endian systems by only accessing + * the emulated memory in 32-bit chunks, native endian. But that's nothing + * compared to Darek Mihocka + * (section Emulation 103 - Nearly Free Byte Reversal) - he flips the ENTIRE + * RAM backwards! I'll want to represent both of those, via some flags. + * + * I suspect MAME either didn't think of that idea, or don't want the #ifdef. + * Not sure which, nor do I really care. */ + + /* TODO: Some of those flags are unused and/or don't really make sense. Clean + * them up. */ +}; + +/* The frontend may use the largest value of 'start'+'select' in a + * certain namespace to infer the size of the address space. + * + * If the address space is larger than that, a mapping with .ptr=NULL + * should be at the end of the array, with .select set to all ones for + * as long as the address space is big. + * + * Sample descriptors (minus .ptr, and RETRO_MEMFLAG_ on the flags): + * SNES WRAM: + * .start=0x7E0000, .len=0x20000 + * (Note that this must be mapped before the ROM in most cases; some of the + * ROM mappers + * try to claim $7E0000, or at least $7E8000.) + * SNES SPC700 RAM: + * .addrspace="S", .len=0x10000 + * SNES WRAM mirrors: + * .flags=MIRROR, .start=0x000000, .select=0xC0E000, .len=0x2000 + * .flags=MIRROR, .start=0x800000, .select=0xC0E000, .len=0x2000 + * SNES WRAM mirrors, alternate equivalent descriptor: + * .flags=MIRROR, .select=0x40E000, .disconnect=~0x1FFF + * (Various similar constructions can be created by combining parts of + * the above two.) + * SNES LoROM (512KB, mirrored a couple of times): + * .flags=CONST, .start=0x008000, .select=0x408000, .disconnect=0x8000, .len=512*1024 + * .flags=CONST, .start=0x400000, .select=0x400000, .disconnect=0x8000, .len=512*1024 + * SNES HiROM (4MB): + * .flags=CONST, .start=0x400000, .select=0x400000, .len=4*1024*1024 + * .flags=CONST, .offset=0x8000, .start=0x008000, .select=0x408000, .len=4*1024*1024 + * SNES ExHiROM (8MB): + * .flags=CONST, .offset=0, .start=0xC00000, .select=0xC00000, .len=4*1024*1024 + * .flags=CONST, .offset=4*1024*1024, .start=0x400000, .select=0xC00000, .len=4*1024*1024 + * .flags=CONST, .offset=0x8000, .start=0x808000, .select=0xC08000, .len=4*1024*1024 + * .flags=CONST, .offset=4*1024*1024+0x8000, .start=0x008000, .select=0xC08000, .len=4*1024*1024 + * Clarify the size of the address space: + * .ptr=NULL, .select=0xFFFFFF + * .len can be implied by .select in many of them, but was included for clarity. + */ + +struct retro_memory_map +{ + const struct retro_memory_descriptor *descriptors; + unsigned num_descriptors; +}; + +struct retro_controller_description +{ + /* Human-readable description of the controller. Even if using a generic + * input device type, this can be set to the particular device type the + * core uses. */ + const char *desc; + + /* Device type passed to retro_set_controller_port_device(). If the device + * type is a sub-class of a generic input device type, use the + * RETRO_DEVICE_SUBCLASS macro to create an ID. + * + * E.g. RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 1). */ + unsigned id; +}; + +struct retro_controller_info +{ + const struct retro_controller_description *types; + unsigned num_types; +}; + +struct retro_subsystem_memory_info +{ + /* The extension associated with a memory type, e.g. "psram". */ + const char *extension; + + /* The memory type for retro_get_memory(). This should be at + * least 0x100 to avoid conflict with standardized + * libretro memory types. */ + unsigned type; +}; + +struct retro_subsystem_rom_info +{ + /* Describes what the content is (SGB BIOS, GB ROM, etc). */ + const char *desc; + + /* Same definition as retro_get_system_info(). */ + const char *valid_extensions; + + /* Same definition as retro_get_system_info(). */ + bool need_fullpath; + + /* Same definition as retro_get_system_info(). */ + bool block_extract; + + /* This is set if the content is required to load a game. + * If this is set to false, a zeroed-out retro_game_info can be passed. */ + bool required; + + /* Content can have multiple associated persistent + * memory types (retro_get_memory()). */ + const struct retro_subsystem_memory_info *memory; + unsigned num_memory; +}; + +struct retro_subsystem_info +{ + /* Human-readable string of the subsystem type, e.g. "Super GameBoy" */ + const char *desc; + + /* A computer friendly short string identifier for the subsystem type. + * This name must be [a-z]. + * E.g. if desc is "Super GameBoy", this can be "sgb". + * This identifier can be used for command-line interfaces, etc. + */ + const char *ident; + + /* Infos for each content file. The first entry is assumed to be the + * "most significant" content for frontend purposes. + * E.g. with Super GameBoy, the first content should be the GameBoy ROM, + * as it is the most "significant" content to a user. + * If a frontend creates new file paths based on the content used + * (e.g. savestates), it should use the path for the first ROM to do so. */ + const struct retro_subsystem_rom_info *roms; + + /* Number of content files associated with a subsystem. */ + unsigned num_roms; + + /* The type passed to retro_load_game_special(). */ + unsigned id; +}; + +typedef void (RETRO_CALLCONV *retro_proc_address_t)(void); + +/* libretro API extension functions: + * (None here so far). + * + * Get a symbol from a libretro core. + * Cores should only return symbols which are actual + * extensions to the libretro API. + * + * Frontends should not use this to obtain symbols to standard + * libretro entry points (static linking or dlsym). + * + * The symbol name must be equal to the function name, + * e.g. if void retro_foo(void); exists, the symbol must be called "retro_foo". + * The returned function pointer must be cast to the corresponding type. + */ +typedef retro_proc_address_t (RETRO_CALLCONV *retro_get_proc_address_t)(const char *sym); + +struct retro_get_proc_address_interface +{ + retro_get_proc_address_t get_proc_address; +}; + +enum retro_log_level +{ + RETRO_LOG_DEBUG = 0, + RETRO_LOG_INFO, + RETRO_LOG_WARN, + RETRO_LOG_ERROR, + + RETRO_LOG_DUMMY = INT_MAX +}; + +/* Logging function. Takes log level argument as well. */ +typedef void (RETRO_CALLCONV *retro_log_printf_t)(enum retro_log_level level, + const char *fmt, ...); + +struct retro_log_callback +{ + retro_log_printf_t log; +}; + +/* Performance related functions */ + +/* ID values for SIMD CPU features */ +#define RETRO_SIMD_SSE (1 << 0) +#define RETRO_SIMD_SSE2 (1 << 1) +#define RETRO_SIMD_VMX (1 << 2) +#define RETRO_SIMD_VMX128 (1 << 3) +#define RETRO_SIMD_AVX (1 << 4) +#define RETRO_SIMD_NEON (1 << 5) +#define RETRO_SIMD_SSE3 (1 << 6) +#define RETRO_SIMD_SSSE3 (1 << 7) +#define RETRO_SIMD_MMX (1 << 8) +#define RETRO_SIMD_MMXEXT (1 << 9) +#define RETRO_SIMD_SSE4 (1 << 10) +#define RETRO_SIMD_SSE42 (1 << 11) +#define RETRO_SIMD_AVX2 (1 << 12) +#define RETRO_SIMD_VFPU (1 << 13) +#define RETRO_SIMD_PS (1 << 14) +#define RETRO_SIMD_AES (1 << 15) +#define RETRO_SIMD_VFPV3 (1 << 16) +#define RETRO_SIMD_VFPV4 (1 << 17) +#define RETRO_SIMD_POPCNT (1 << 18) +#define RETRO_SIMD_MOVBE (1 << 19) +#define RETRO_SIMD_CMOV (1 << 20) + +typedef uint64_t retro_perf_tick_t; +typedef int64_t retro_time_t; + +struct retro_perf_counter +{ + const char *ident; + retro_perf_tick_t start; + retro_perf_tick_t total; + retro_perf_tick_t call_cnt; + + bool registered; +}; + +/* Returns current time in microseconds. + * Tries to use the most accurate timer available. + */ +typedef retro_time_t (RETRO_CALLCONV *retro_perf_get_time_usec_t)(void); + +/* A simple counter. Usually nanoseconds, but can also be CPU cycles. + * Can be used directly if desired (when creating a more sophisticated + * performance counter system). + * */ +typedef retro_perf_tick_t (RETRO_CALLCONV *retro_perf_get_counter_t)(void); + +/* Returns a bit-mask of detected CPU features (RETRO_SIMD_*). */ +typedef uint64_t (RETRO_CALLCONV *retro_get_cpu_features_t)(void); + +/* Asks frontend to log and/or display the state of performance counters. + * Performance counters can always be poked into manually as well. + */ +typedef void (RETRO_CALLCONV *retro_perf_log_t)(void); + +/* Register a performance counter. + * ident field must be set with a discrete value and other values in + * retro_perf_counter must be 0. + * Registering can be called multiple times. To avoid calling to + * frontend redundantly, you can check registered field first. */ +typedef void (RETRO_CALLCONV *retro_perf_register_t)(struct retro_perf_counter *counter); + +/* Starts a registered counter. */ +typedef void (RETRO_CALLCONV *retro_perf_start_t)(struct retro_perf_counter *counter); + +/* Stops a registered counter. */ +typedef void (RETRO_CALLCONV *retro_perf_stop_t)(struct retro_perf_counter *counter); + +/* For convenience it can be useful to wrap register, start and stop in macros. + * E.g.: + * #ifdef LOG_PERFORMANCE + * #define RETRO_PERFORMANCE_INIT(perf_cb, name) static struct retro_perf_counter name = {#name}; if (!name.registered) perf_cb.perf_register(&(name)) + * #define RETRO_PERFORMANCE_START(perf_cb, name) perf_cb.perf_start(&(name)) + * #define RETRO_PERFORMANCE_STOP(perf_cb, name) perf_cb.perf_stop(&(name)) + * #else + * ... Blank macros ... + * #endif + * + * These can then be used mid-functions around code snippets. + * + * extern struct retro_perf_callback perf_cb; * Somewhere in the core. + * + * void do_some_heavy_work(void) + * { + * RETRO_PERFORMANCE_INIT(cb, work_1; + * RETRO_PERFORMANCE_START(cb, work_1); + * heavy_work_1(); + * RETRO_PERFORMANCE_STOP(cb, work_1); + * + * RETRO_PERFORMANCE_INIT(cb, work_2); + * RETRO_PERFORMANCE_START(cb, work_2); + * heavy_work_2(); + * RETRO_PERFORMANCE_STOP(cb, work_2); + * } + * + * void retro_deinit(void) + * { + * perf_cb.perf_log(); * Log all perf counters here for example. + * } + */ + +struct retro_perf_callback +{ + retro_perf_get_time_usec_t get_time_usec; + retro_get_cpu_features_t get_cpu_features; + + retro_perf_get_counter_t get_perf_counter; + retro_perf_register_t perf_register; + retro_perf_start_t perf_start; + retro_perf_stop_t perf_stop; + retro_perf_log_t perf_log; +}; + +/* FIXME: Document the sensor API and work out behavior. + * It will be marked as experimental until then. + */ +enum retro_sensor_action +{ + RETRO_SENSOR_ACCELEROMETER_ENABLE = 0, + RETRO_SENSOR_ACCELEROMETER_DISABLE, + + RETRO_SENSOR_DUMMY = INT_MAX +}; + +/* Id values for SENSOR types. */ +#define RETRO_SENSOR_ACCELEROMETER_X 0 +#define RETRO_SENSOR_ACCELEROMETER_Y 1 +#define RETRO_SENSOR_ACCELEROMETER_Z 2 + +typedef bool (RETRO_CALLCONV *retro_set_sensor_state_t)(unsigned port, + enum retro_sensor_action action, unsigned rate); + +typedef float (RETRO_CALLCONV *retro_sensor_get_input_t)(unsigned port, unsigned id); + +struct retro_sensor_interface +{ + retro_set_sensor_state_t set_sensor_state; + retro_sensor_get_input_t get_sensor_input; +}; + +enum retro_camera_buffer +{ + RETRO_CAMERA_BUFFER_OPENGL_TEXTURE = 0, + RETRO_CAMERA_BUFFER_RAW_FRAMEBUFFER, + + RETRO_CAMERA_BUFFER_DUMMY = INT_MAX +}; + +/* Starts the camera driver. Can only be called in retro_run(). */ +typedef bool (RETRO_CALLCONV *retro_camera_start_t)(void); + +/* Stops the camera driver. Can only be called in retro_run(). */ +typedef void (RETRO_CALLCONV *retro_camera_stop_t)(void); + +/* Callback which signals when the camera driver is initialized + * and/or deinitialized. + * retro_camera_start_t can be called in initialized callback. + */ +typedef void (RETRO_CALLCONV *retro_camera_lifetime_status_t)(void); + +/* A callback for raw framebuffer data. buffer points to an XRGB8888 buffer. + * Width, height and pitch are similar to retro_video_refresh_t. + * First pixel is top-left origin. + */ +typedef void (RETRO_CALLCONV *retro_camera_frame_raw_framebuffer_t)(const uint32_t *buffer, + unsigned width, unsigned height, size_t pitch); + +/* A callback for when OpenGL textures are used. + * + * texture_id is a texture owned by camera driver. + * Its state or content should be considered immutable, except for things like + * texture filtering and clamping. + * + * texture_target is the texture target for the GL texture. + * These can include e.g. GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE, and possibly + * more depending on extensions. + * + * affine points to a packed 3x3 column-major matrix used to apply an affine + * transform to texture coordinates. (affine_matrix * vec3(coord_x, coord_y, 1.0)) + * After transform, normalized texture coord (0, 0) should be bottom-left + * and (1, 1) should be top-right (or (width, height) for RECTANGLE). + * + * GL-specific typedefs are avoided here to avoid relying on gl.h in + * the API definition. + */ +typedef void (RETRO_CALLCONV *retro_camera_frame_opengl_texture_t)(unsigned texture_id, + unsigned texture_target, const float *affine); + +struct retro_camera_callback +{ + /* Set by libretro core. + * Example bitmask: caps = (1 << RETRO_CAMERA_BUFFER_OPENGL_TEXTURE) | (1 << RETRO_CAMERA_BUFFER_RAW_FRAMEBUFFER). + */ + uint64_t caps; + + /* Desired resolution for camera. Is only used as a hint. */ + unsigned width; + unsigned height; + + /* Set by frontend. */ + retro_camera_start_t start; + retro_camera_stop_t stop; + + /* Set by libretro core if raw framebuffer callbacks will be used. */ + retro_camera_frame_raw_framebuffer_t frame_raw_framebuffer; + + /* Set by libretro core if OpenGL texture callbacks will be used. */ + retro_camera_frame_opengl_texture_t frame_opengl_texture; + + /* Set by libretro core. Called after camera driver is initialized and + * ready to be started. + * Can be NULL, in which this callback is not called. + */ + retro_camera_lifetime_status_t initialized; + + /* Set by libretro core. Called right before camera driver is + * deinitialized. + * Can be NULL, in which this callback is not called. + */ + retro_camera_lifetime_status_t deinitialized; +}; + +/* Sets the interval of time and/or distance at which to update/poll + * location-based data. + * + * To ensure compatibility with all location-based implementations, + * values for both interval_ms and interval_distance should be provided. + * + * interval_ms is the interval expressed in milliseconds. + * interval_distance is the distance interval expressed in meters. + */ +typedef void (RETRO_CALLCONV *retro_location_set_interval_t)(unsigned interval_ms, + unsigned interval_distance); + +/* Start location services. The device will start listening for changes to the + * current location at regular intervals (which are defined with + * retro_location_set_interval_t). */ +typedef bool (RETRO_CALLCONV *retro_location_start_t)(void); + +/* Stop location services. The device will stop listening for changes + * to the current location. */ +typedef void (RETRO_CALLCONV *retro_location_stop_t)(void); + +/* Get the position of the current location. Will set parameters to + * 0 if no new location update has happened since the last time. */ +typedef bool (RETRO_CALLCONV *retro_location_get_position_t)(double *lat, double *lon, + double *horiz_accuracy, double *vert_accuracy); + +/* Callback which signals when the location driver is initialized + * and/or deinitialized. + * retro_location_start_t can be called in initialized callback. + */ +typedef void (RETRO_CALLCONV *retro_location_lifetime_status_t)(void); + +struct retro_location_callback +{ + retro_location_start_t start; + retro_location_stop_t stop; + retro_location_get_position_t get_position; + retro_location_set_interval_t set_interval; + + retro_location_lifetime_status_t initialized; + retro_location_lifetime_status_t deinitialized; +}; + +enum retro_rumble_effect +{ + RETRO_RUMBLE_STRONG = 0, + RETRO_RUMBLE_WEAK = 1, + + RETRO_RUMBLE_DUMMY = INT_MAX +}; + +/* Sets rumble state for joypad plugged in port 'port'. + * Rumble effects are controlled independently, + * and setting e.g. strong rumble does not override weak rumble. + * Strength has a range of [0, 0xffff]. + * + * Returns true if rumble state request was honored. + * Calling this before first retro_run() is likely to return false. */ +typedef bool (RETRO_CALLCONV *retro_set_rumble_state_t)(unsigned port, + enum retro_rumble_effect effect, uint16_t strength); + +struct retro_rumble_interface +{ + retro_set_rumble_state_t set_rumble_state; +}; + +/* Notifies libretro that audio data should be written. */ +typedef void (RETRO_CALLCONV *retro_audio_callback_t)(void); + +/* True: Audio driver in frontend is active, and callback is + * expected to be called regularily. + * False: Audio driver in frontend is paused or inactive. + * Audio callback will not be called until set_state has been + * called with true. + * Initial state is false (inactive). + */ +typedef void (RETRO_CALLCONV *retro_audio_set_state_callback_t)(bool enabled); + +struct retro_audio_callback +{ + retro_audio_callback_t callback; + retro_audio_set_state_callback_t set_state; +}; + +/* Notifies a libretro core of time spent since last invocation + * of retro_run() in microseconds. + * + * It will be called right before retro_run() every frame. + * The frontend can tamper with timing to support cases like + * fast-forward, slow-motion and framestepping. + * + * In those scenarios the reference frame time value will be used. */ +typedef int64_t retro_usec_t; +typedef void (RETRO_CALLCONV *retro_frame_time_callback_t)(retro_usec_t usec); +struct retro_frame_time_callback +{ + retro_frame_time_callback_t callback; + /* Represents the time of one frame. It is computed as + * 1000000 / fps, but the implementation will resolve the + * rounding to ensure that framestepping, etc is exact. */ + retro_usec_t reference; +}; + +/* Pass this to retro_video_refresh_t if rendering to hardware. + * Passing NULL to retro_video_refresh_t is still a frame dupe as normal. + * */ +#define RETRO_HW_FRAME_BUFFER_VALID ((void*)-1) + +/* Invalidates the current HW context. + * Any GL state is lost, and must not be deinitialized explicitly. + * If explicit deinitialization is desired by the libretro core, + * it should implement context_destroy callback. + * If called, all GPU resources must be reinitialized. + * Usually called when frontend reinits video driver. + * Also called first time video driver is initialized, + * allowing libretro core to initialize resources. + */ +typedef void (RETRO_CALLCONV *retro_hw_context_reset_t)(void); + +/* Gets current framebuffer which is to be rendered to. + * Could change every frame potentially. + */ +typedef uintptr_t (RETRO_CALLCONV *retro_hw_get_current_framebuffer_t)(void); + +/* Get a symbol from HW context. */ +typedef retro_proc_address_t (RETRO_CALLCONV *retro_hw_get_proc_address_t)(const char *sym); + +enum retro_hw_context_type +{ + RETRO_HW_CONTEXT_NONE = 0, + /* OpenGL 2.x. Driver can choose to use latest compatibility context. */ + RETRO_HW_CONTEXT_OPENGL = 1, + /* OpenGL ES 2.0. */ + RETRO_HW_CONTEXT_OPENGLES2 = 2, + /* Modern desktop core GL context. Use version_major/ + * version_minor fields to set GL version. */ + RETRO_HW_CONTEXT_OPENGL_CORE = 3, + /* OpenGL ES 3.0 */ + RETRO_HW_CONTEXT_OPENGLES3 = 4, + /* OpenGL ES 3.1+. Set version_major/version_minor. For GLES2 and GLES3, + * use the corresponding enums directly. */ + RETRO_HW_CONTEXT_OPENGLES_VERSION = 5, + + /* Vulkan, see RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE. */ + RETRO_HW_CONTEXT_VULKAN = 6, + + RETRO_HW_CONTEXT_DUMMY = INT_MAX +}; + +struct retro_hw_render_callback +{ + /* Which API to use. Set by libretro core. */ + enum retro_hw_context_type context_type; + + /* Called when a context has been created or when it has been reset. + * An OpenGL context is only valid after context_reset() has been called. + * + * When context_reset is called, OpenGL resources in the libretro + * implementation are guaranteed to be invalid. + * + * It is possible that context_reset is called multiple times during an + * application lifecycle. + * If context_reset is called without any notification (context_destroy), + * the OpenGL context was lost and resources should just be recreated + * without any attempt to "free" old resources. + */ + retro_hw_context_reset_t context_reset; + + /* Set by frontend. + * TODO: This is rather obsolete. The frontend should not + * be providing preallocated framebuffers. */ + retro_hw_get_current_framebuffer_t get_current_framebuffer; + + /* Set by frontend. */ + retro_hw_get_proc_address_t get_proc_address; + + /* Set if render buffers should have depth component attached. + * TODO: Obsolete. */ + bool depth; + + /* Set if stencil buffers should be attached. + * TODO: Obsolete. */ + bool stencil; + + /* If depth and stencil are true, a packed 24/8 buffer will be added. + * Only attaching stencil is invalid and will be ignored. */ + + /* Use conventional bottom-left origin convention. If false, + * standard libretro top-left origin semantics are used. + * TODO: Move to GL specific interface. */ + bool bottom_left_origin; + + /* Major version number for core GL context or GLES 3.1+. */ + unsigned version_major; + + /* Minor version number for core GL context or GLES 3.1+. */ + unsigned version_minor; + + /* If this is true, the frontend will go very far to avoid + * resetting context in scenarios like toggling fullscreen, etc. + * TODO: Obsolete? Maybe frontend should just always assume this ... + */ + bool cache_context; + + /* The reset callback might still be called in extreme situations + * such as if the context is lost beyond recovery. + * + * For optimal stability, set this to false, and allow context to be + * reset at any time. + */ + + /* A callback to be called before the context is destroyed in a + * controlled way by the frontend. */ + retro_hw_context_reset_t context_destroy; + + /* OpenGL resources can be deinitialized cleanly at this step. + * context_destroy can be set to NULL, in which resources will + * just be destroyed without any notification. + * + * Even when context_destroy is non-NULL, it is possible that + * context_reset is called without any destroy notification. + * This happens if context is lost by external factors (such as + * notified by GL_ARB_robustness). + * + * In this case, the context is assumed to be already dead, + * and the libretro implementation must not try to free any OpenGL + * resources in the subsequent context_reset. + */ + + /* Creates a debug context. */ + bool debug_context; +}; + +/* Callback type passed in RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK. + * Called by the frontend in response to keyboard events. + * down is set if the key is being pressed, or false if it is being released. + * keycode is the RETROK value of the char. + * character is the text character of the pressed key. (UTF-32). + * key_modifiers is a set of RETROKMOD values or'ed together. + * + * The pressed/keycode state can be indepedent of the character. + * It is also possible that multiple characters are generated from a + * single keypress. + * Keycode events should be treated separately from character events. + * However, when possible, the frontend should try to synchronize these. + * If only a character is posted, keycode should be RETROK_UNKNOWN. + * + * Similarily if only a keycode event is generated with no corresponding + * character, character should be 0. + */ +typedef void (RETRO_CALLCONV *retro_keyboard_event_t)(bool down, unsigned keycode, + uint32_t character, uint16_t key_modifiers); + +struct retro_keyboard_callback +{ + retro_keyboard_event_t callback; +}; + +/* Callbacks for RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE. + * Should be set for implementations which can swap out multiple disk + * images in runtime. + * + * If the implementation can do this automatically, it should strive to do so. + * However, there are cases where the user must manually do so. + * + * Overview: To swap a disk image, eject the disk image with + * set_eject_state(true). + * Set the disk index with set_image_index(index). Insert the disk again + * with set_eject_state(false). + */ + +/* If ejected is true, "ejects" the virtual disk tray. + * When ejected, the disk image index can be set. + */ +typedef bool (RETRO_CALLCONV *retro_set_eject_state_t)(bool ejected); + +/* Gets current eject state. The initial state is 'not ejected'. */ +typedef bool (RETRO_CALLCONV *retro_get_eject_state_t)(void); + +/* Gets current disk index. First disk is index 0. + * If return value is >= get_num_images(), no disk is currently inserted. + */ +typedef unsigned (RETRO_CALLCONV *retro_get_image_index_t)(void); + +/* Sets image index. Can only be called when disk is ejected. + * The implementation supports setting "no disk" by using an + * index >= get_num_images(). + */ +typedef bool (RETRO_CALLCONV *retro_set_image_index_t)(unsigned index); + +/* Gets total number of images which are available to use. */ +typedef unsigned (RETRO_CALLCONV *retro_get_num_images_t)(void); + +struct retro_game_info; + +/* Replaces the disk image associated with index. + * Arguments to pass in info have same requirements as retro_load_game(). + * Virtual disk tray must be ejected when calling this. + * + * Replacing a disk image with info = NULL will remove the disk image + * from the internal list. + * As a result, calls to get_image_index() can change. + * + * E.g. replace_image_index(1, NULL), and previous get_image_index() + * returned 4 before. + * Index 1 will be removed, and the new index is 3. + */ +typedef bool (RETRO_CALLCONV *retro_replace_image_index_t)(unsigned index, + const struct retro_game_info *info); + +/* Adds a new valid index (get_num_images()) to the internal disk list. + * This will increment subsequent return values from get_num_images() by 1. + * This image index cannot be used until a disk image has been set + * with replace_image_index. */ +typedef bool (RETRO_CALLCONV *retro_add_image_index_t)(void); + +struct retro_disk_control_callback +{ + retro_set_eject_state_t set_eject_state; + retro_get_eject_state_t get_eject_state; + + retro_get_image_index_t get_image_index; + retro_set_image_index_t set_image_index; + retro_get_num_images_t get_num_images; + + retro_replace_image_index_t replace_image_index; + retro_add_image_index_t add_image_index; +}; + +enum retro_pixel_format +{ + /* 0RGB1555, native endian. + * 0 bit must be set to 0. + * This pixel format is default for compatibility concerns only. + * If a 15/16-bit pixel format is desired, consider using RGB565. */ + RETRO_PIXEL_FORMAT_0RGB1555 = 0, + + /* XRGB8888, native endian. + * X bits are ignored. */ + RETRO_PIXEL_FORMAT_XRGB8888 = 1, + + /* RGB565, native endian. + * This pixel format is the recommended format to use if a 15/16-bit + * format is desired as it is the pixel format that is typically + * available on a wide range of low-power devices. + * + * It is also natively supported in APIs like OpenGL ES. */ + RETRO_PIXEL_FORMAT_RGB565 = 2, + + /* Ensure sizeof() == sizeof(int). */ + RETRO_PIXEL_FORMAT_UNKNOWN = INT_MAX +}; + +struct retro_message +{ + const char *msg; /* Message to be displayed. */ + unsigned frames; /* Duration in frames of message. */ +}; + +/* Describes how the libretro implementation maps a libretro input bind + * to its internal input system through a human readable string. + * This string can be used to better let a user configure input. */ +struct retro_input_descriptor +{ + /* Associates given parameters with a description. */ + unsigned port; + unsigned device; + unsigned index; + unsigned id; + + /* Human readable description for parameters. + * The pointer must remain valid until + * retro_unload_game() is called. */ + const char *description; +}; + +struct retro_system_info +{ + /* All pointers are owned by libretro implementation, and pointers must + * remain valid until retro_deinit() is called. */ + + const char *library_name; /* Descriptive name of library. Should not + * contain any version numbers, etc. */ + const char *library_version; /* Descriptive version of core. */ + + const char *valid_extensions; /* A string listing probably content + * extensions the core will be able to + * load, separated with pipe. + * I.e. "bin|rom|iso". + * Typically used for a GUI to filter + * out extensions. */ + + /* If true, retro_load_game() is guaranteed to provide a valid pathname + * in retro_game_info::path. + * ::data and ::size are both invalid. + * + * If false, ::data and ::size are guaranteed to be valid, but ::path + * might not be valid. + * + * This is typically set to true for libretro implementations that must + * load from file. + * Implementations should strive for setting this to false, as it allows + * the frontend to perform patching, etc. */ + bool need_fullpath; + + /* If true, the frontend is not allowed to extract any archives before + * loading the real content. + * Necessary for certain libretro implementations that load games + * from zipped archives. */ + bool block_extract; +}; + +struct retro_game_geometry +{ + unsigned base_width; /* Nominal video width of game. */ + unsigned base_height; /* Nominal video height of game. */ + unsigned max_width; /* Maximum possible width of game. */ + unsigned max_height; /* Maximum possible height of game. */ + + float aspect_ratio; /* Nominal aspect ratio of game. If + * aspect_ratio is <= 0.0, an aspect ratio + * of base_width / base_height is assumed. + * A frontend could override this setting, + * if desired. */ +}; + +struct retro_system_timing +{ + double fps; /* FPS of video content. */ + double sample_rate; /* Sampling rate of audio. */ +}; + +struct retro_system_av_info +{ + struct retro_game_geometry geometry; + struct retro_system_timing timing; +}; + +struct retro_variable +{ + /* Variable to query in RETRO_ENVIRONMENT_GET_VARIABLE. + * If NULL, obtains the complete environment string if more + * complex parsing is necessary. + * The environment string is formatted as key-value pairs + * delimited by semicolons as so: + * "key1=value1;key2=value2;..." + */ + const char *key; + + /* Value to be obtained. If key does not exist, it is set to NULL. */ + const char *value; +}; + +struct retro_game_info +{ + const char *path; /* Path to game, UTF-8 encoded. + * Usually used as a reference. + * May be NULL if rom was loaded from stdin + * or similar. + * retro_system_info::need_fullpath guaranteed + * that this path is valid. */ + const void *data; /* Memory buffer of loaded game. Will be NULL + * if need_fullpath was set. */ + size_t size; /* Size of memory buffer. */ + const char *meta; /* String of implementation specific meta-data. */ +}; + +#define RETRO_MEMORY_ACCESS_WRITE (1 << 0) + /* The core will write to the buffer provided by retro_framebuffer::data. */ +#define RETRO_MEMORY_ACCESS_READ (1 << 1) + /* The core will read from retro_framebuffer::data. */ +#define RETRO_MEMORY_TYPE_CACHED (1 << 0) + /* The memory in data is cached. + * If not cached, random writes and/or reading from the buffer is expected to be very slow. */ +struct retro_framebuffer +{ + void *data; /* The framebuffer which the core can render into. + Set by frontend in GET_CURRENT_SOFTWARE_FRAMEBUFFER. + The initial contents of data are unspecified. */ + unsigned width; /* The framebuffer width used by the core. Set by core. */ + unsigned height; /* The framebuffer height used by the core. Set by core. */ + size_t pitch; /* The number of bytes between the beginning of a scanline, + and beginning of the next scanline. + Set by frontend in GET_CURRENT_SOFTWARE_FRAMEBUFFER. */ + enum retro_pixel_format format; /* The pixel format the core must use to render into data. + This format could differ from the format used in + SET_PIXEL_FORMAT. + Set by frontend in GET_CURRENT_SOFTWARE_FRAMEBUFFER. */ + + unsigned access_flags; /* How the core will access the memory in the framebuffer. + RETRO_MEMORY_ACCESS_* flags. + Set by core. */ + unsigned memory_flags; /* Flags telling core how the memory has been mapped. + RETRO_MEMORY_TYPE_* flags. + Set by frontend in GET_CURRENT_SOFTWARE_FRAMEBUFFER. */ +}; + +/* Callbacks */ + +/* Environment callback. Gives implementations a way of performing + * uncommon tasks. Extensible. */ +typedef bool (RETRO_CALLCONV *retro_environment_t)(unsigned cmd, void *data); + +/* Render a frame. Pixel format is 15-bit 0RGB1555 native endian + * unless changed (see RETRO_ENVIRONMENT_SET_PIXEL_FORMAT). + * + * Width and height specify dimensions of buffer. + * Pitch specifices length in bytes between two lines in buffer. + * + * For performance reasons, it is highly recommended to have a frame + * that is packed in memory, i.e. pitch == width * byte_per_pixel. + * Certain graphic APIs, such as OpenGL ES, do not like textures + * that are not packed in memory. + */ +typedef void (RETRO_CALLCONV *retro_video_refresh_t)(const void *data, unsigned width, + unsigned height, size_t pitch); + +/* Renders a single audio frame. Should only be used if implementation + * generates a single sample at a time. + * Format is signed 16-bit native endian. + */ +typedef void (RETRO_CALLCONV *retro_audio_sample_t)(int16_t left, int16_t right); + +/* Renders multiple audio frames in one go. + * + * One frame is defined as a sample of left and right channels, interleaved. + * I.e. int16_t buf[4] = { l, r, l, r }; would be 2 frames. + * Only one of the audio callbacks must ever be used. + */ +typedef size_t (RETRO_CALLCONV *retro_audio_sample_batch_t)(const int16_t *data, + size_t frames); + +/* Polls input. */ +typedef void (RETRO_CALLCONV *retro_input_poll_t)(void); + +/* Queries for input for player 'port'. device will be masked with + * RETRO_DEVICE_MASK. + * + * Specialization of devices such as RETRO_DEVICE_JOYPAD_MULTITAP that + * have been set with retro_set_controller_port_device() + * will still use the higher level RETRO_DEVICE_JOYPAD to request input. + */ +typedef int16_t (RETRO_CALLCONV *retro_input_state_t)(unsigned port, unsigned device, + unsigned index, unsigned id); + +/* Sets callbacks. retro_set_environment() is guaranteed to be called + * before retro_init(). + * + * The rest of the set_* functions are guaranteed to have been called + * before the first call to retro_run() is made. */ +RETRO_API void retro_set_environment(retro_environment_t); +RETRO_API void retro_set_video_refresh(retro_video_refresh_t); +RETRO_API void retro_set_audio_sample(retro_audio_sample_t); +RETRO_API void retro_set_audio_sample_batch(retro_audio_sample_batch_t); +RETRO_API void retro_set_input_poll(retro_input_poll_t); +RETRO_API void retro_set_input_state(retro_input_state_t); + +/* Library global initialization/deinitialization. */ +RETRO_API void retro_init(void); +RETRO_API void retro_deinit(void); + +/* Must return RETRO_API_VERSION. Used to validate ABI compatibility + * when the API is revised. */ +RETRO_API unsigned retro_api_version(void); + +/* Gets statically known system info. Pointers provided in *info + * must be statically allocated. + * Can be called at any time, even before retro_init(). */ +RETRO_API void retro_get_system_info(struct retro_system_info *info); + +/* Gets information about system audio/video timings and geometry. + * Can be called only after retro_load_game() has successfully completed. + * NOTE: The implementation of this function might not initialize every + * variable if needed. + * E.g. geom.aspect_ratio might not be initialized if core doesn't + * desire a particular aspect ratio. */ +RETRO_API void retro_get_system_av_info(struct retro_system_av_info *info); + +/* Sets device to be used for player 'port'. + * By default, RETRO_DEVICE_JOYPAD is assumed to be plugged into all + * available ports. + * Setting a particular device type is not a guarantee that libretro cores + * will only poll input based on that particular device type. It is only a + * hint to the libretro core when a core cannot automatically detect the + * appropriate input device type on its own. It is also relevant when a + * core can change its behavior depending on device type. */ +RETRO_API void retro_set_controller_port_device(unsigned port, unsigned device); + +/* Resets the current game. */ +RETRO_API void retro_reset(void); + +/* Runs the game for one video frame. + * During retro_run(), input_poll callback must be called at least once. + * + * If a frame is not rendered for reasons where a game "dropped" a frame, + * this still counts as a frame, and retro_run() should explicitly dupe + * a frame if GET_CAN_DUPE returns true. + * In this case, the video callback can take a NULL argument for data. + */ +RETRO_API void retro_run(void); + +/* Returns the amount of data the implementation requires to serialize + * internal state (save states). + * Between calls to retro_load_game() and retro_unload_game(), the + * returned size is never allowed to be larger than a previous returned + * value, to ensure that the frontend can allocate a save state buffer once. + */ +RETRO_API size_t retro_serialize_size(void); + +/* Serializes internal state. If failed, or size is lower than + * retro_serialize_size(), it should return false, true otherwise. */ +RETRO_API bool retro_serialize(void *data, size_t size); +RETRO_API bool retro_unserialize(const void *data, size_t size); + +RETRO_API void retro_cheat_reset(void); +RETRO_API void retro_cheat_set(unsigned index, bool enabled, const char *code); + +/* Loads a game. */ +RETRO_API bool retro_load_game(const struct retro_game_info *game); + +/* Loads a "special" kind of game. Should not be used, + * except in extreme cases. */ +RETRO_API bool retro_load_game_special( + unsigned game_type, + const struct retro_game_info *info, size_t num_info +); + +/* Unloads a currently loaded game. */ +RETRO_API void retro_unload_game(void); + +/* Gets region of game. */ +RETRO_API unsigned retro_get_region(void); + +/* Gets region of memory. */ +RETRO_API void *retro_get_memory_data(unsigned id); +RETRO_API size_t retro_get_memory_size(unsigned id); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/libretro.o b/libretro.o new file mode 100644 index 0000000000000000000000000000000000000000..ba17efb34e0a8309c4388ec93246862f4bdcf025 GIT binary patch literal 9384 zcmcIq4RBl4mA=AK>V#yUQ*d$knW&&lWyW=+5EB>ZMgpZM;IJk?C4V5x)|0IwOB($c zCuCb^Vz+q{T->4UWOnF|XWDIP%g$se!$xUmBI95u-A-$owwo>NkkV3MVRzkx4e2CA z`<;8A&U=!ancbP)H*??p?sv{T=iHxn-+fn#efe5J*Y!6E@sLDL(Vo|b^Af9@Z;22; za|m(sb*h|2<`&&O?XhS+YSUW?21IwMy*HP$%X*sZC51;sPpN&l+TaO@F01gkLO}Qe z?U`!5Zp2nvD#XMMN^L7L(p$Zjt4ZL-z3DH6ICG=oQBAm;x_egpKcfiq-iX`>J^K}C zg1tLB?392@(FwgbO?wR}lU{qaI=&Jdg~%TIn67J(0-`6dy2CHam75R1S<^S@zd(B| ztM}!H^org)FtD~x&sUn(R)&O#w`(g$rRwLmgb%#m86My5=?NRZ=`uo|o-U)yGY~d* zd%Wdl(g}};do~(p!p6CGs5lWmaH4b9W7BbIiK_Q#t$B}IYu)GZg|ya?CxCmGr~Ahr zpiPICH6n_0A+2fI2#N$;2MK6RpPfK{UTf+&jJy(0T>H<`xv+No)VZLxL*7c~w8v)8 zX*)~O`+050%z3Ttq;~w2@zZj%7sd~{$i;#89OGe!A>9><#>rzV$KHGR!#6cAh2}+Q zQ~&0A{N-3k^U46d2(WcZsiQ$XyUg}bZxqE5r;y&lvmuXH_JQH*hLiC4R*$#17)-g@ zhw^ACe{0vFE{}K9*r|L=*SJgSjxVF^n1F(`B5$(Wrg4AY8$Ps*jF}!>UBGl94Da+& z^o5wV#wTdZg~yv4K?aReMG}U~s{*K@tsFrC5xH)sY&O_J#hGA>BWyUpt|8V4HUf4k z*o3hcaV_ndgqhi3(+_{}gZ0{Shh%v^(0Ka7#y?R@SBH&d)XJHVXSJjFaabvzMlfMe zMVhAN)1xJrFMd=mhqVnZ;vo*edhs^t(nW!mPgB!BHYbRon2Y z6dPMTZT<_jW?;V*40M>R)rcRK;!{%N7%eCM z3udI#W-V%&lqlY0Nma7OY!y%DB_FI2$R43uL1U(>hU`8ic*QO-PN7+Sq@=ETn(X#(qU;4AhGN4IQ*LHryg`-+!e8 z4KyTUNJjhW--4NSk(6ZnFTI7RwXc3pvX?a>sBG^B8cr3tflf2~(juj*F%y)}?bGS3`erSsHn!hCZ$6{WbIppta*~ zz$839hz-_ z_Wxb3^*=pPeNo3a7Bz@Pz1R30J-|0D5jP!niROb&p$#{PB?H$8*9#7x10(6|g`Dzx z)d0x4RG$)-L)T{LRm!z_>&Hdw;g5;i4lWY647)_jfKy!OST2_OuI*WpS=`-NS~TZ8 zd(FI~u|YICT7)CBfR9?6W*M1`fpUzIcmRp!Q8&_!2#7d0@-HEIfk%)}BKd$R|1J{k zp^hLwg+x<*4*5q&0bts!UxyR|bR&NfDGWS<{2&tfnLz$EBzk%#kw1sD9ry_Hqe#1f zOUS2?dVuGUzl9V7o<}~|D8vA82KhKPpcB9o$iIg4Ebt`qZzD|tA3^>jr0)QikWV8$ z2Rw)TG}80HXOaIN=?L&V^7BY90@IS(fOHhF3HfrQp8&g&e-fz#OnYSdNZ8&rPB$R$ zJD_O;+e!1MG8c%ug>JZ3nO}F^$wGgBBGvDX=|hP=-My;dPNec_cP5?9qtL!Y4C={r zDzrsBF%ZqK7pYiIY}WIIY|8z(zQ>)&xieWkm(ybiX1Jc(lrH3S_x8Kot71!pD(tWq zx+>M-NQpPsF;5KWdNP)NBDJujkg4Mb6R}uQx6$2cG)m9j<@T<+GuGzDtrZTt^mtxu z%ZLzci_MAtfxOth`Tl!5aZ$rk>AX8v$WTw{F{oEv8O$}h%uE$*_lL+~DwcMm=jiIG z=$m=Vr$bvWeR4%W3QJj)cl|5n8;A=)Z{C&@XTR>h?>@9hf9t{$4C(^1emx%< z)CbeqJ&{~uuU=QzCa2HoI(Z?L)3b?aa-q8a1IfZplj&$I(jOhvBe{&;2kUiiDXgsC zpGc?bM1>SruajL}k}cF*TDZs1i;iq&J%HTiAw}T#5CV>;>rB{G z7L-${ed!dYUoxp@BQzZ&YT2nX70o0fLwYv1(2&LSL@H4qpd`g=%=gbBImKV%e!oO? z_C=>aPVpq}>m?dxMB5X^(e6YcT4BRTPVo!eRo!1R`W>StJf%u{JJ18N#$C)kz$gNw zEXSFn6@(TQrzikDDA89~`V>%?Vzd!xlN{;4 zV(xK9|G?;{jNWAQ9*`Q}4;VSH!B*U2Mr}Z9KCcH-@oixAFrzOp`XZ3BVlej&<|dhY zp1FTyZkoBDGxuBO-eT@g%w1;g+Qy3C6+kLdFLQS?cQ13BnA^czjJcm3xT`Gx8O)I?9StQq^0&O- z2BuV{b2mzJRm}Y;(J8A{YYQ0q^}=EzVCJi8B~X%Q+T5Gs8hMqW>Lfh=WID^Ctr}GHfYg?E7*JcE|;1g&6rJ2HNaBN54 zRbTdBnQ3)saL`Izec69u#&!%k-3W`GV%ZxGdaf$9pp}4h@ zVAR0m@CC+hBtxaQxfbaRMw7{OUqy=;x-L}d;G4CwtU^}Naj7NRWLi*?v%$kFni?=$ zS^oTQE6bnTJ$v`=6_K4?{tolgl)f?PBe++xYvKs7H`@1jB$@8_cc_C4z(`Ub(v#f} z_NmHiRpmZYd5G$EWCo%+olvJK?X3+_nWL{pQu|CiOD71ug}8L>Ge3nReZ4{{s;^G7 zVEa5ZnX7->lD#`AYBp8#oorgLvE~Q1&9v>yob0WGJvy}m-nquF0;C9RY8yJ}`#NW{ zVgLNU3at(gY(jM~K?e`ATkf#RR&&U)?Eph6uC)=>npKA(rYCuHBHJ~L1A=rmCh;B< ztLEXzMOyX`(vc!gQ<9P4T4IkR){vY>UDf8J9Mhxi*vDk3`_&ndNpO|Qv69L2Ih8z( zswK^`?V!tK$i8`WCjV)o;!z)aU3? G0`=eNTU+P= literal 0 HcmV?d00001 diff --git a/link.T b/link.T new file mode 100644 index 00000000..b0c262db --- /dev/null +++ b/link.T @@ -0,0 +1,5 @@ +{ + global: retro_*; + local: *; +}; + From 9e3e7ec5a3dc6c2b698f7c0850dc9a5dae73b4d9 Mon Sep 17 00:00:00 2001 From: radius Date: Tue, 7 Feb 2017 22:54:50 -0500 Subject: [PATCH 02/12] try to fix the framebuffer --- libretro.cpp | 23 +++++++++++++++-------- libretro.o | Bin 9384 -> 9642 bytes 2 files changed, 15 insertions(+), 8 deletions(-) diff --git a/libretro.cpp b/libretro.cpp index 94d03d27..318078a5 100644 --- a/libretro.cpp +++ b/libretro.cpp @@ -11,7 +11,7 @@ #include "GPU.h" #include "libretro.h" -static uint32_t *frame_buf; +static uint16_t *frame_buf; static struct retro_log_callback logging; static retro_log_printf_t log_cb; static bool use_audio_cb; @@ -33,7 +33,7 @@ static retro_environment_t environ_cb; void retro_init(void) { - frame_buf = (uint32_t*)malloc(320 * 240 * sizeof(uint32_t)); + frame_buf = (uint16_t*)malloc(256 * 384 * sizeof(uint16_t)); const char *dir = NULL; if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) { @@ -76,14 +76,14 @@ static retro_input_state_t input_state_cb; void retro_get_system_av_info(struct retro_system_av_info *info) { - float aspect = 4.0f / 3.0f; + float aspect = 0.0f; float sampling_rate = 30000.0f; info->geometry = (struct retro_game_geometry) { - .base_width = 320, - .base_height = 240, - .max_width = 320, - .max_height = 240, + .base_width = 256, + .base_height = 386, + .max_width = 256, + .max_height = 384, .aspect_ratio = aspect, }; @@ -264,10 +264,17 @@ static void audio_set_state(bool enable) (void)enable; } +WORD red_mask = 0x7C00; +WORD green_mask = 0x3E0; +WORD blue_mask = 0x1F; + void retro_run(void) { update_input(); NDS::RunFrame(); + memcpy(frame_buf, GPU::Framebuffer, sizeof(GPU::Framebuffer)); + + video_cb(frame_buf, 256, 384, 0); if (!use_audio_cb) audio_callback(); @@ -288,7 +295,7 @@ bool retro_load_game(const struct retro_game_info *info) environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc); - enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_XRGB8888; + enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565; if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { log_cb(RETRO_LOG_INFO, "XRGB8888 is not supported.\n"); diff --git a/libretro.o b/libretro.o index ba17efb34e0a8309c4388ec93246862f4bdcf025..2b4a261742c2594ba8e82cfaba70d96339214dfd 100644 GIT binary patch literal 9642 zcmcIqeQ;dWb-%0CQu(V-G$;`P>IK%VM8#TbBoH2mca0Ptu$YZMz}ODElJ>2%WwpEA z4`DlQDe!IOqh<_(2Ql$Y9%?A4V|e7G;wQOTuKtVCW*(Uwi{!% zzjN=~v+rp|C;g*u=HB}|zjN+6_v_vF-rbFUdAXqL?avDFlti_{n=^LiBv#p(B|?1Y z5Tf=|N*+Mr7NLkY+MVmR*wq8Sz05)Y`bDVd?a5}XY=jIKTtgyK^zO7fd=)nDSNUu8 zd((Ei5ZZPS-T3@xl+(>9{G!#ry3HQM4e{&>AznaV=|VN(t`9|4`|g)=IjaMx``xmn zN`F24-P3L(Y2@l*chL0bgiLncjJf`v{`Bv=S~`t`yNPgALZZ1gcb@<`#NUbuLc#BqK2Xvg+vW@FM5RgY-R zIgeXw-s5TQ)S5dze&j(<=rvk5`&ZPVDHl7n`V~VE3ApwV(CQx?M|nxBZ$F5#+@6^B z>*7USyKDMlKzmwd#f#cAa~HL3MH&5)_Vlq!TFY^5>O|r7QbQA*?{`s%;q#6$-BFO? z@{@(*M^=uW|H75`v?gj=6Ph;tpRQ+TqMcfkY+w@_*gUPw(V@t8vp+N%lR`L!jHb_Z zdYa@I6kJ;oL?7GiX_~|>AxaG$kVlHSJA(Uzo~Fk~PvjbdV=ieshIJ;y5dj0~MP_o? zW|4o;r0-ur&ddm|&A@b_8BMc?F&1LBGCzUBygt@Y2QpANF-c0jv`R+}ZRHRIw8(WA z6?1_`5|0HM9eTk5mX?EF2-E>~C|HlV7cnj6nt+?RfQ+i$=#VV02b#}Tz3>M0bhTbs zLA^ZI=~?ZV#9|Vqx6qgnsL5NTG*X27$?K((u64PHhuRPClXuFHE^27$E$VvfcD3^0 zlI9G8T7QbI^cQ-!RS&swf!u19=UnBxVNNas#1*sS6@P)J0#63E1U7GZO0IO>clk9M z#8LxA>GBnQCjyhTAdV=OV#P*_fk~Q4$@#UfACq>4E2Rcf7yk9iyMf6Ypl`kiQ?2Va zQZ0>rmz9ll@jKNn{;Te}d5G|Oz@PVz)H7WExceL}^i zU8NkmFl*ML9vvZ#s%5f7NH$P7YEzJZQ!!^#$f2NWfx}I!lz&}=OQiX_FnrLI-tF98hFn25jI+qtwTZ+syb1? ze4FE1A*E?yHXv`oBNaYIE&d6-avd5jrQ$G1)mz!x@a_UNHTeo115}sTo^%YR&JGj#X0;b|Bmy{+v?@Y z9e!_Rp@E<_B}1xsG`V?01nU8=)=FbsyF}l-f5cb>2uED{WF*J@8#b> zcLRs%@o+>SgY!}Y-Q+_Lu0t-gk*||0Y)I=SZv?`2v<@TO0Uhlu`u1nSUkvOBd@=A$ zAUr#KZHe|(&&Q>bn&qXiKi2@Uyx$Ce4E?XLW2vJ}Q+0+SEH} z0KJyU_5}(j%_dGmt4&>kvah1NU@8wn2@SmwS-UlNP0|l6puYwh^Y@g#_k$u-zTzak zjp$>0JboH_KPC!$eJ$o^l3vU3VC)2@GDvp=${i%@xW_{&uc!)FlDGGG=HjL*X7m9GfK z@;>$dEia5eJ8r*LiZf2J2OTmm8d%2-PH{s|O{*gUe9KaC%R!fD*jFpGoldc|zec$J z*3s&~%+~fmPvv?wA+j#jr{sd&M%b0*g=PH`QUCn%)@6~U=_R4M;tlh)XKF5>UY%3a zIU0o{y@=0+K1>;fj7cTtNIZ%}>nMcuSu}t+H_AUpY62cYIf2v)Oyzfx=$+>f$`eSm z)aOxNNAd&HW<`&OPCz%xFCpo`Ln!wlQJisKd>9+gLq*a0`{W}Akl&kq1=Qt4je(*i$tqGjWUZw%Y6vtFw!@G z$5FnBGyyz;@>@vX20n!H`$#VX7g0_ly#hRs@=c^e!1PW_FZEl4W0V0kodr!VoE@}& z%5zWLZIt0!Wq!4V68XNqc(TtOH3s9ohI>`s9Z%*`?sO`XgWz2%28={1*||wP*WaC6 zCz8>u*l6VPnWXz!W0yOgb*D2%Hfuz0Un+K1Q;(b6NZHjrO+uOv)0|T>fUIJ8(A{~28~!wY)Okw_!b-E zef>GHb>qY9J8)6QlBt|Kn@`h77*Uwpt~AyfU1p&KOTK{uCZj1gMvksX+1@N0@9x}u z?e?4fQd!KXGI*NGF3G{}d9pdX1dea(o zJN3u-rfhcK>s{k*HSOJZ8#}2dYwySyxlAhD+i!H|!dWAC$Ko1H>LR*6BNrYp22z<_ z;cR@jQB~KXr_baneLk5rGV$)jVs(ED&Ei25sqSdFuY14BnRV}RC2&bRxb-0!|bkX&KL-H52C@bRFw;h$)b8{ zYHuou<(EhpnJ_KKu-bO2Ty>}8;XxylU2MvtMm!m>ZlENsw}`~6kw1=9D?W#OgG3qR z^!%t5UqZfKq7g>4dn=CiYlVIY^aN6^_$TD5?msj7cSiNNQtb#@b1~*J%>5~I1?FC2 zZi2b*G4~pCCzw0Q+|QZ2$lP`2mf%fGwfQC>)sJ<|^)oua=x-QJ0jU~4W#q!!lj4>! 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G0`=eNTU+P= From ad996226f76ea6fed47f80511b7aebdcbc2fb7ae Mon Sep 17 00:00:00 2001 From: radius Date: Tue, 7 Feb 2017 23:07:51 -0500 Subject: [PATCH 03/12] aliaspider killed the fun --- libretro.cpp | 8 +++++++- libretro.o | Bin 9642 -> 11058 bytes 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/libretro.cpp b/libretro.cpp index 318078a5..14f6ce81 100644 --- a/libretro.cpp +++ b/libretro.cpp @@ -268,12 +268,18 @@ WORD red_mask = 0x7C00; WORD green_mask = 0x3E0; WORD blue_mask = 0x1F; + void retro_run(void) { update_input(); NDS::RunFrame(); memcpy(frame_buf, GPU::Framebuffer, sizeof(GPU::Framebuffer)); - + for (int i = 0; i < 256*192*2; i++) + { + frame_buf[i] = ((frame_buf[i] & 0x1F) << 11) | + ((frame_buf[i] & 0x3E0) << 1) | + ((frame_buf[i] & 0x7C00) >> 10); + } video_cb(frame_buf, 256, 384, 0); if (!use_audio_cb) audio_callback(); diff --git a/libretro.o b/libretro.o index 2b4a261742c2594ba8e82cfaba70d96339214dfd..26fe23952fef6ad6781fa1ce382f4cbd46ee88e6 100644 GIT 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z#FncMzoq1a<3v@#XJp1`n9kD-h8~zYd@~3xk~^>Cfi#W=CB@g6*{Y6K%&|Z)Oh0_Y$tlMBO7pxm z(xuB4QM6-miYgcgggfH_++(eQP*=1~1OlDOKsPTov}8QuTf6K*Ow)Rr*;1@)>Wa!W K#Gqy_D*p?L=xlNT From d1042a4328ea3c25472a892b3b5fc87e6df62e53 Mon Sep 17 00:00:00 2001 From: radius Date: Tue, 7 Feb 2017 23:26:15 -0500 Subject: [PATCH 05/12] implement game loading --- NDS.cpp | 4 ++-- libretro.cpp | 11 +++++------ 2 files changed, 7 insertions(+), 8 deletions(-) diff --git a/NDS.cpp b/NDS.cpp index b8589b19..9da3755a 100644 --- a/NDS.cpp +++ b/NDS.cpp @@ -30,6 +30,7 @@ #include "Wifi.h" extern char retro_base_directory[4096]; +extern char retro_game_path[4096]; namespace NDS { @@ -311,8 +312,7 @@ void Reset() // test //LoadROM(); //LoadFirmware(); - snprintf(path, sizeof(path), "%s/nsmb.nds", retro_base_directory); - if (NDSCart::LoadROM(path)) + if (NDSCart::LoadROM(retro_game_path)) Running = true; // hax } diff --git a/libretro.cpp b/libretro.cpp index 14f6ce81..005b29ec 100644 --- a/libretro.cpp +++ b/libretro.cpp @@ -18,6 +18,7 @@ static bool use_audio_cb; static float last_aspect; static float last_sample_rate; char retro_base_directory[4096]; +char retro_game_path[4096]; static void fallback_log(enum retro_log_level level, const char *fmt, ...) { @@ -39,8 +40,6 @@ void retro_init(void) { snprintf(retro_base_directory, sizeof(retro_base_directory), "%s", dir); } - - NDS::Init(); } void retro_deinit(void) @@ -63,7 +62,7 @@ void retro_get_system_info(struct retro_system_info *info) { memset(info, 0, sizeof(*info)); info->library_name = "melonDS"; - info->library_version = "what?"; + info->library_version = "0.1"; info->need_fullpath = true; info->valid_extensions = "nds"; } @@ -97,9 +96,6 @@ void retro_set_environment(retro_environment_t cb) { environ_cb = cb; - bool no_content = true; - cb(RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME, &no_content); - if (cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &logging)) log_cb = logging.log; else @@ -308,6 +304,9 @@ bool retro_load_game(const struct retro_game_info *info) return false; } + snprintf(retro_game_path, sizeof(retro_game_path), "%s", info->path); + NDS::Init(); + struct retro_audio_callback audio_cb = { audio_callback, audio_set_state }; use_audio_cb = environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_CALLBACK, &audio_cb); From 70ec433955c6b312c19e1312279c808222854735 Mon Sep 17 00:00:00 2001 From: twinaphex Date: Wed, 8 Feb 2017 06:54:35 +0100 Subject: [PATCH 06/12] Makes it compile on Linux --- libretro.cpp | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/libretro.cpp b/libretro.cpp index 005b29ec..a83790fe 100644 --- a/libretro.cpp +++ b/libretro.cpp @@ -6,7 +6,9 @@ #include #include +#if defined(_WIN32) && !defined(_XBOX) #include +#endif #include "NDS.h" #include "GPU.h" #include "libretro.h" @@ -260,11 +262,6 @@ static void audio_set_state(bool enable) (void)enable; } -WORD red_mask = 0x7C00; -WORD green_mask = 0x3E0; -WORD blue_mask = 0x1F; - - void retro_run(void) { update_input(); From 6e61c9f233e9d0c4d2f2a55731ea109713285337 Mon Sep 17 00:00:00 2001 From: twinaphex Date: Wed, 8 Feb 2017 06:57:08 +0100 Subject: [PATCH 07/12] Don't add gnu99/c99 to CXXFLAGS, should be added to CFLAGS instead when appropriate --- Makefile | 7 +------ libretro.cpp | 20 +++++++++----------- 2 files changed, 10 insertions(+), 17 deletions(-) diff --git a/Makefile b/Makefile index 1f501649..05a4f358 100644 --- a/Makefile +++ b/Makefile @@ -112,13 +112,8 @@ else endif OBJECTS := NDS.o ARM.o ARMInterpreter.o ARMInterpreter_ALU.o ARMInterpreter_Branch.o ARMInterpreter_LoadStore.o CP15.o DMA.o GPU.o GPU2D.o GPU3D.o NDSCart.o RTC.o SPI.o Wifi.o libretro.o -CXXFLAGS += -I../../libretro-common/include -Wall -pedantic $(fpic) -ifneq (,$(findstring qnx,$(platform))) -CXXFLAGS += -Wc,-std=c99 -else -CXXFLAGS += -std=gnu99 -endif +CXXFLAGS += -I../../libretro-common/include -Wall -pedantic $(fpic) CXXFLAGS += -I../../libretro-common/include diff --git a/libretro.cpp b/libretro.cpp index a83790fe..5327e1ac 100644 --- a/libretro.cpp +++ b/libretro.cpp @@ -77,19 +77,17 @@ static retro_input_state_t input_state_cb; void retro_get_system_av_info(struct retro_system_av_info *info) { - float aspect = 0.0f; - float sampling_rate = 30000.0f; + float aspect = 0.0f; + float sampling_rate = 30000.0f; - info->geometry = (struct retro_game_geometry) { - .base_width = 256, - .base_height = 386, - .max_width = 256, - .max_height = 384, - .aspect_ratio = aspect, - }; + info->geometry.base_width = 256; + info->geometry.base_height = 386; + info->geometry.max_width = 256; + info->geometry.max_height = 384; + info->geometry.aspect_ratio = aspect; - last_aspect = aspect; - last_sample_rate = sampling_rate; + last_aspect = aspect; + last_sample_rate = sampling_rate; } static struct retro_rumble_interface rumble; From c21e7079a890dc76cdd1289eb058cd1a86301bda Mon Sep 17 00:00:00 2001 From: twinaphex Date: Wed, 8 Feb 2017 07:03:26 +0100 Subject: [PATCH 08/12] Create Makefile.common --- Makefile | 20 +++++++++++--------- Makefile.common | 17 +++++++++++++++++ 2 files changed, 28 insertions(+), 9 deletions(-) create mode 100644 Makefile.common diff --git a/Makefile b/Makefile index 05a4f358..0d2582c0 100644 --- a/Makefile +++ b/Makefile @@ -29,8 +29,9 @@ else ifneq ($(findstring MINGW,$(shell uname -a)),) system_platform = win endif +CORE_DIR += . TARGET_NAME := melonds -LIBM = -lm +LIBM = -lm ifeq ($(ARCHFLAGS),) ifeq ($(archs),ppc) @@ -55,11 +56,11 @@ ifeq ($(platform), unix) EXT ?= so TARGET := $(TARGET_NAME)_libretro.$(EXT) fpic := -fPIC - SHARED := -shared -Wl,--version-script=link.T -Wl,--no-undefined + SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined else ifeq ($(platform), linux-portable) TARGET := $(TARGET_NAME)_libretro.$(EXT) fpic := -fPIC -nostdlib - SHARED := -shared -Wl,--version-script=link.T + SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T LIBM := else ifneq (,$(findstring osx,$(platform))) TARGET := $(TARGET_NAME)_libretro.dylib @@ -86,11 +87,11 @@ endif else ifneq (,$(findstring qnx,$(platform))) TARGET := $(TARGET_NAME)_libretro_qnx.so fpic := -fPIC - SHARED := -shared -Wl,--version-script=link.T -Wl,--no-undefined + SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined else ifeq ($(platform), emscripten) TARGET := $(TARGET_NAME)_libretro_emscripten.bc fpic := -fPIC - SHARED := -shared -Wl,--version-script=link.T -Wl,--no-undefined + SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined else ifeq ($(platform), vita) TARGET := $(TARGET_NAME)_vita.a CC = arm-vita-eabi-gcc @@ -100,7 +101,7 @@ else ifeq ($(platform), vita) else CC = gcc TARGET := $(TARGET_NAME)_libretro.dll - SHARED := -shared -static-libgcc -static-libstdc++ -s -Wl,--version-script=link.T -Wl,--no-undefined + SHARED := -shared -static-libgcc -static-libstdc++ -s -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined endif LDFLAGS += $(LIBM) @@ -111,11 +112,12 @@ else CXXFLAGS += -O3 endif -OBJECTS := NDS.o ARM.o ARMInterpreter.o ARMInterpreter_ALU.o ARMInterpreter_Branch.o ARMInterpreter_LoadStore.o CP15.o DMA.o GPU.o GPU2D.o GPU3D.o NDSCart.o RTC.o SPI.o Wifi.o libretro.o +include Makefile.common -CXXFLAGS += -I../../libretro-common/include -Wall -pedantic $(fpic) +OBJECTS := $(SOURCES_C:.c=.o) $(SOURCES_CXX:.cpp=.o) -CXXFLAGS += -I../../libretro-common/include +CFLAGS += -Wall -pedantic -D__LIBRETRO__ $(fpic) +CXXFLAGS += -Wall -pedantic -D__LIBRETRO__ $(fpic) all: $(TARGET) diff --git a/Makefile.common b/Makefile.common new file mode 100644 index 00000000..d9ad9676 --- /dev/null +++ b/Makefile.common @@ -0,0 +1,17 @@ +SOURCES_C := +SOURCES_CXX := $(CORE_DIR)/NDS.cpp \ + $(CORE_DIR)/ARM.cpp \ + $(CORE_DIR)/ARMInterpreter.cpp \ + $(CORE_DIR)/ARMInterpreter_ALU.cpp \ + $(CORE_DIR)/ARMInterpreter_Branch.cpp \ + $(CORE_DIR)/ARMInterpreter_LoadStore.cpp \ + $(CORE_DIR)/CP15.cpp \ + $(CORE_DIR)/DMA.cpp \ + $(CORE_DIR)/GPU.cpp \ + $(CORE_DIR)/GPU2D.cpp \ + $(CORE_DIR)/GPU3D.cpp \ + $(CORE_DIR)/NDSCart.cpp \ + $(CORE_DIR)/RTC.cpp \ + $(CORE_DIR)/SPI.cpp \ + $(CORE_DIR)/Wifi.cpp \ + $(CORE_DIR)/libretro.cpp From b1e510293e2f8abc62c08b4b756edb212cb5f136 Mon Sep 17 00:00:00 2001 From: twinaphex Date: Wed, 8 Feb 2017 09:05:22 +0100 Subject: [PATCH 09/12] Add JNI files --- jni/Android.mk | 29 +++++++++++++++++++++++++++++ jni/Application.mk | 1 + 2 files changed, 30 insertions(+) create mode 100644 jni/Android.mk create mode 100644 jni/Application.mk diff --git a/jni/Android.mk b/jni/Android.mk new file mode 100644 index 00000000..84eba3c3 --- /dev/null +++ b/jni/Android.mk @@ -0,0 +1,29 @@ +LOCAL_PATH := $(call my-dir) + +include $(CLEAR_VARS) + +LOCAL_MODULE := retro + +ifeq ($(TARGET_ARCH),arm) +LOCAL_CFLAGS += -DANDROID_ARM +LOCAL_ARM_MODE := arm +endif + +ifeq ($(TARGET_ARCH),x86) +LOCAL_CFLAGS += -DANDROID_X86 +endif + +ifeq ($(TARGET_ARCH),mips) +LOCAL_CFLAGS += -DANDROID_MIPS -D__mips__ -D__MIPSEL__ +endif + +CORE_DIR = .. + +include $(CORE_DIR)/Makefile.common + +LOCAL_SRC_FILES += $(SOURCES_C) $(SOURCES_CXX) +LOCAL_CFLAGS += -O2 -D__LIBRETRO__ -DNDEBUG=1 $(INCFLAGS) + +#LOCAL_LDLIBS += -lz + +include $(BUILD_SHARED_LIBRARY) diff --git a/jni/Application.mk b/jni/Application.mk new file mode 100644 index 00000000..a252a72d --- /dev/null +++ b/jni/Application.mk @@ -0,0 +1 @@ +APP_ABI := all From 048a1058b8b22038984c8c081e5c969b9a6e5e0f Mon Sep 17 00:00:00 2001 From: twinaphex Date: Wed, 8 Feb 2017 09:06:01 +0100 Subject: [PATCH 10/12] Get rid of pedantic warnings --- Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index 0d2582c0..99336a8f 100644 --- a/Makefile +++ b/Makefile @@ -116,8 +116,8 @@ include Makefile.common OBJECTS := $(SOURCES_C:.c=.o) $(SOURCES_CXX:.cpp=.o) -CFLAGS += -Wall -pedantic -D__LIBRETRO__ $(fpic) -CXXFLAGS += -Wall -pedantic -D__LIBRETRO__ $(fpic) +CFLAGS += -Wall -D__LIBRETRO__ $(fpic) +CXXFLAGS += -Wall -D__LIBRETRO__ $(fpic) all: $(TARGET) From 812c72cc90a205c6b0397f147dd249c9917dc414 Mon Sep 17 00:00:00 2001 From: radius Date: Wed, 8 Feb 2017 20:10:45 -0500 Subject: [PATCH 11/12] let this be like it was for standalone --- NDS.cpp | 17 ++++++++++++++++- SPI.cpp | 7 ++++++- 2 files changed, 22 insertions(+), 2 deletions(-) diff --git a/NDS.cpp b/NDS.cpp index 9da3755a..43ff8d34 100644 --- a/NDS.cpp +++ b/NDS.cpp @@ -29,8 +29,10 @@ #include "RTC.h" #include "Wifi.h" +#ifdef __LIBRETRO__ extern char retro_base_directory[4096]; extern char retro_game_path[4096]; +#endif namespace NDS { @@ -221,11 +223,15 @@ void Reset() FILE* f; u32 i; +#ifdef __LIBRETRO__ char path[2048]; snprintf(path, sizeof(path), "%s/bios9.bin", retro_base_directory); f = fopen(path, "rb"); +#else + f = fopen("bios9.bin", "rb"); +#endif if (!f) - printf("ARM9 BIOS not found at %s\n"); + printf("ARM9 BIOS not found\n"); else { fseek(f, 0, SEEK_SET); @@ -235,8 +241,12 @@ void Reset() fclose(f); } +#ifdef __LIBRETRO__ snprintf(path, sizeof(path), "%s/bios7.bin", retro_base_directory); f = fopen(path, "rb"); +#else + f = fopen("bios7.bin", "rb"); +#endif if (!f) printf("ARM7 BIOS not found\n"); else @@ -312,8 +322,13 @@ void Reset() // test //LoadROM(); //LoadFirmware(); +#ifdef __LIBRETRO__ if (NDSCart::LoadROM(retro_game_path)) Running = true; // hax +#else + if (NDSCart::LoadROM("nsmb.nds")) + Running = true; // hax +#endif } diff --git a/SPI.cpp b/SPI.cpp index fd3a615e..1e78b9af 100644 --- a/SPI.cpp +++ b/SPI.cpp @@ -21,7 +21,9 @@ #include "NDS.h" #include "SPI.h" +#ifdef __LIBRETRO__ extern char retro_base_directory[4096]; +#endif namespace SPI_Firmware { @@ -87,10 +89,13 @@ void Reset() { if (Firmware) delete[] Firmware; Firmware = NULL; - +#ifdef __LIBRETRO__ char path[2047]; snprintf(path, sizeof(path), "%s/firmware.bin", retro_base_directory); FILE* f = fopen(path, "rb"); +#else + FILE* f = fopen("firmware.bin", "rb"); +#endif if (!f) { printf("firmware.bin not found\n"); From 221807fc3e22e7e7e15fd017f54f1b6c63c03a05 Mon Sep 17 00:00:00 2001 From: radius Date: Wed, 8 Feb 2017 20:14:37 -0500 Subject: [PATCH 12/12] revert this too --- NDS.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/NDS.cpp b/NDS.cpp index 43ff8d34..3d5999e1 100644 --- a/NDS.cpp +++ b/NDS.cpp @@ -326,7 +326,7 @@ void Reset() if (NDSCart::LoadROM(retro_game_path)) Running = true; // hax #else - if (NDSCart::LoadROM("nsmb.nds")) + if (NDSCart::LoadROM("rom/nsmb.nds")) Running = true; // hax #endif }