219 lines
8.7 KiB
C
219 lines
8.7 KiB
C
#ifndef LIBRETRO_H__
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#define LIBRETRO_H__
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#include "snes9x.h"
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#else
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#include <stdbool.h>
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#endif
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#define RETRO_API_VERSION 1
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#define RETRO_DEVICE_MASK 0xff
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#define RETRO_DEVICE_NONE 0
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#define RETRO_DEVICE_JOYPAD 1
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#define RETRO_DEVICE_MOUSE 2
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#define RETRO_DEVICE_KEYBOARD 3
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#define RETRO_DEVICE_LIGHTGUN 4
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#define RETRO_DEVICE_JOYPAD_MULTITAP ((1 << 8) | RETRO_DEVICE_JOYPAD)
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#define RETRO_DEVICE_LIGHTGUN_SUPER_SCOPE ((1 << 8) | RETRO_DEVICE_LIGHTGUN)
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#define RETRO_DEVICE_LIGHTGUN_JUSTIFIER ((2 << 8) | RETRO_DEVICE_LIGHTGUN)
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#define RETRO_DEVICE_LIGHTGUN_JUSTIFIERS ((3 << 8) | RETRO_DEVICE_LIGHTGUN)
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#define RETRO_DEVICE_ID_JOYPAD_B 0
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#define RETRO_DEVICE_ID_JOYPAD_Y 1
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#define RETRO_DEVICE_ID_JOYPAD_SELECT 2
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#define RETRO_DEVICE_ID_JOYPAD_START 3
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#define RETRO_DEVICE_ID_JOYPAD_UP 4
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#define RETRO_DEVICE_ID_JOYPAD_DOWN 5
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#define RETRO_DEVICE_ID_JOYPAD_LEFT 6
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#define RETRO_DEVICE_ID_JOYPAD_RIGHT 7
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#define RETRO_DEVICE_ID_JOYPAD_A 8
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#define RETRO_DEVICE_ID_JOYPAD_X 9
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#define RETRO_DEVICE_ID_JOYPAD_L 10
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#define RETRO_DEVICE_ID_JOYPAD_R 11
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#define RETRO_DEVICE_ID_MOUSE_X 0
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#define RETRO_DEVICE_ID_MOUSE_Y 1
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#define RETRO_DEVICE_ID_MOUSE_LEFT 2
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#define RETRO_DEVICE_ID_MOUSE_RIGHT 3
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#define RETRO_DEVICE_ID_LIGHTGUN_X 0
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#define RETRO_DEVICE_ID_LIGHTGUN_Y 1
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#define RETRO_DEVICE_ID_LIGHTGUN_TRIGGER 2
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#define RETRO_DEVICE_ID_LIGHTGUN_CURSOR 3
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#define RETRO_DEVICE_ID_LIGHTGUN_TURBO 4
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#define RETRO_DEVICE_ID_LIGHTGUN_PAUSE 5
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#define RETRO_DEVICE_ID_LIGHTGUN_START 6
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#define RETRO_REGION_NTSC 0
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#define RETRO_REGION_PAL 1
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#define RETRO_MEMORY_MASK 0xff
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#define RETRO_MEMORY_SAVE_RAM 0
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#define RETRO_MEMORY_RTC 1
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#define RETRO_MEMORY_SYSTEM_RAM 2
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#define RETRO_MEMORY_SNES_BSX_RAM ((1 << 8) | RETRO_MEMORY_SAVE_RAM)
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#define RETRO_MEMORY_SNES_BSX_PRAM ((2 << 8) | RETRO_MEMORY_SAVE_RAM)
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#define RETRO_MEMORY_SNES_SUFAMI_TURBO_A_RAM ((3 << 8) | RETRO_MEMORY_SAVE_RAM)
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#define RETRO_MEMORY_SNES_SUFAMI_TURBO_B_RAM ((4 << 8) | RETRO_MEMORY_SAVE_RAM)
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#define RETRO_MEMORY_SNES_GAME_BOY_RAM ((5 << 8) | RETRO_MEMORY_SAVE_RAM)
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#define RETRO_MEMORY_SNES_GAME_BOY_RTC ((6 << 8) | RETRO_MEMORY_RTC)
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#define RETRO_GAME_TYPE_BSX 0x101
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#define RETRO_GAME_TYPE_BSX_SLOTTED 0x102
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#define RETRO_GAME_TYPE_SUFAMI_TURBO 0x103
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#define RETRO_GAME_TYPE_SUPER_GAME_BOY 0x104
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// Environment commands.
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#define RETRO_ENVIRONMENT_SET_ROTATION 1 // const unsigned * --
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// Sets screen rotation of graphics.
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// Is only implemented if rotation can be accelerated by hardware.
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// Valid values are 0, 1, 2, 3, which rotates screen by 0, 90, 180, 270 degrees
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// counter-clockwise respectively.
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//
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#define RETRO_ENVIRONMENT_GET_OVERSCAN 2 // bool * --
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// Boolean value whether or not the implementation should use overscan, or crop away overscan.
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//
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#define RETRO_ENVIRONMENT_GET_CAN_DUPE 3 // bool * --
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// Boolean value whether or not SSNES supports frame duping,
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// passing NULL to video frame callback.
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//
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#define RETRO_ENVIRONMENT_GET_VARIABLE 4 // struct retro_variable * --
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// Interface to aquire user-defined information from environment
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// that cannot feasibly be supported in a multi-system way.
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// Mostly used for obscure,
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// specific features that the user can tap into when neseccary.
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//
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#define RETRO_ENVIRONMENT_SET_VARIABLES 5 // const struct retro_variable * --
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// Allows an implementation to signal the environment
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// which variables it might want to check for later using GET_VARIABLE.
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// 'data' points to an array of retro_variable structs terminated by a { NULL, NULL } element.
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// retro_variable::value should contain a human readable description of the key.
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//
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#define RETRO_ENVIRONMENT_SET_MESSAGE 6 // const struct retro_message * --
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// Sets a message to be displayed in implementation-specific manner for a certain amount of 'frames'.
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struct retro_message
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{
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const char *msg;
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unsigned frames;
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};
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struct retro_system_info
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{
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const char *library_name;
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const char *library_version;
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const char *valid_extensions;
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bool need_fullpath;
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bool block_extract;
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};
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struct retro_game_geometry
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{
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unsigned base_width; // Nominal video width of game.
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unsigned base_height; // Nominal video height of game.
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unsigned max_width; // Maximum possible width of game.
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unsigned max_height; // Maximum possible height of game.
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float aspect_ratio; // Nominal aspect ratio of game. If aspect_ratio is <= 0.0,
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// an aspect ratio of base_width / base_height is assumed.
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// A frontend could override this setting if desired.
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};
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struct retro_system_timing
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{
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double fps; // FPS of video content.
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double sample_rate; // Sampling rate of audio.
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};
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struct retro_system_av_info
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{
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struct retro_game_geometry geometry;
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struct retro_system_timing timing;
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};
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struct retro_variable
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{
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const char *key; // Variable to query in RETRO_ENVIRONMENT_GET_VARIABLE.
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// If NULL, obtains the complete environment string if more complex parsing is necessary.
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// The environment string is formatted as key-value pairs delimited by semicolons as so:
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// "key1=value1;key2=value2;..."
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const char *value; // Value to be obtained. If key does not exist, it is set to NULL.
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};
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struct retro_game_info
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{
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const char *path; // Path to game, UTF-8 encoded. Usually used as a reference.
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// May be NULL if rom was loaded from stdin or similar.
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// SET_NEED_FULLPATH path guaranteed that this path is valid.
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const void *data; // Memory buffer of loaded game.
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// If the game is too big to load in one go.
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// SET_NEED_FULLPATH should be used.
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// In this case, data and size will be 0,
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// and game can be loaded from path.
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size_t size; // Size of memory buffer.
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const char *meta; // String of implementation specific meta-data.
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};
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typedef bool (*retro_environment_t)(unsigned cmd, void *data);
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typedef void (*retro_video_refresh_t)(const void *data, unsigned width, unsigned height, size_t pitch);
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typedef void (*retro_audio_sample_t)(int16_t left, int16_t right);
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typedef size_t (*retro_audio_sample_batch_t)(const int16_t *data, size_t frames);
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typedef void (*retro_input_poll_t)(void);
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typedef int16_t (*retro_input_state_t)(unsigned port, unsigned device, unsigned index, unsigned id);
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void retro_init(void);
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void retro_deinit(void);
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unsigned retro_api_version(void);
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void retro_get_system_info(struct retro_system_info *info);
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void retro_get_system_av_info(struct retro_system_av_info *info);
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void retro_set_environment(retro_environment_t);
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void retro_set_video_refresh(retro_video_refresh_t);
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void retro_set_audio_sample(retro_audio_sample_t);
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void retro_set_audio_sample_batch(retro_audio_sample_batch_t);
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void retro_set_input_poll(retro_input_poll_t);
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void retro_set_input_state(retro_input_state_t);
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void retro_set_controller_port_device(unsigned port, unsigned device);
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void retro_reset(void);
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void retro_run(void);
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size_t retro_serialize_size(void);
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bool retro_serialize(void *data, size_t size);
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bool retro_unserialize(const void *data, size_t size);
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void retro_cheat_reset(void);
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void retro_cheat_set(unsigned index, bool enabled, const char *code);
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bool retro_load_game(const struct retro_game_info *game);
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bool retro_load_game_special(
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unsigned game_type,
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const struct retro_game_info *info, size_t num_info
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);
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void retro_unload_game(void);
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unsigned retro_get_region(void);
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void *retro_get_memory_data(unsigned id);
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size_t retro_get_memory_size(unsigned id);
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#ifdef __cplusplus
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}
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#endif
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#endif
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