/* SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes. * Copyright (C) 2010-2011 - Hans-Kristian Arntzen * * Some code herein may be based on code found in BSNES. * * SSNES is free software: you can redistribute it and/or modify it under the terms * of the GNU General Public License as published by the Free Software Found- * ation, either version 3 of the License, or (at your option) any later version. * * SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR * PURPOSE. See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along with SSNES. * If not, see . */ #ifndef __DRIVER__H #define __DRIVER__H #include #include #include #include #include enum { SSNES_FAST_FORWARD_KEY = 0x666, // Hurr, durr SSNES_FAST_FORWARD_HOLD_KEY, SSNES_LOAD_STATE_KEY, SSNES_SAVE_STATE_KEY, SSNES_FULLSCREEN_TOGGLE_KEY, SSNES_QUIT_KEY, SSNES_STATE_SLOT_PLUS, SSNES_STATE_SLOT_MINUS, SSNES_AUDIO_INPUT_RATE_PLUS, SSNES_AUDIO_INPUT_RATE_MINUS, SSNES_REWIND, SSNES_MOVIE_RECORD_TOGGLE, SSNES_PAUSE_TOGGLE, SSNES_RESET, SSNES_SHADER_NEXT, SSNES_SHADER_PREV, SSNES_CHEAT_INDEX_PLUS, SSNES_CHEAT_INDEX_MINUS, SSNES_CHEAT_TOGGLE, SSNES_SCREENSHOT, SSNES_DSP_CONFIG }; struct snes_keybind { int id; uint16_t key; uint16_t joykey; uint32_t joyaxis; }; typedef struct video_info { unsigned width; unsigned height; bool fullscreen; bool vsync; bool force_aspect; bool smooth; int input_scale; // HQ2X => 2, HQ4X => 4, None => 1 bool rgb32; // Use 32-bit RGBA rather than native XBGR1555. } video_info_t; typedef struct audio_driver { void* (*init)(const char* device, unsigned rate, unsigned latency); ssize_t (*write)(void* data, const void* buf, size_t size); bool (*stop)(void* data); bool (*start)(void* data); void (*set_nonblock_state)(void* data, bool toggle); // Should we care about blocking in audio thread? Fast forwarding. void (*free)(void* data); bool (*use_float)(void *data); // Defines if driver will take standard floating point samples, or int16_t samples. const char *ident; } audio_driver_t; #define AXIS_NEG(x) (((uint32_t)(x) << 16) | 0xFFFFU) #define AXIS_POS(x) ((uint32_t)(x) | 0xFFFF0000U) #define AXIS_NONE (0xFFFFFFFFU) #define AXIS_NEG_GET(x) (((uint32_t)(x) >> 16) & 0xFFFFU) #define AXIS_POS_GET(x) ((uint32_t)(x) & 0xFFFFU) #define NO_BTN ((uint16_t)0xFFFFU) // I hope no joypad will ever have this many buttons ... ;) #define HAT_UP_MASK (1 << 15) #define HAT_DOWN_MASK (1 << 14) #define HAT_LEFT_MASK (1 << 13) #define HAT_RIGHT_MASK (1 << 12) #define HAT_MAP(x, hat) ((x & ((1 << 12) - 1)) | hat) #define HAT_MASK (HAT_UP_MASK | HAT_DOWN_MASK | HAT_LEFT_MASK | HAT_RIGHT_MASK) #define GET_HAT_DIR(x) (x & HAT_MASK) #define GET_HAT(x) (x & (~HAT_MASK)) typedef struct input_driver { void* (*init)(void); void (*poll)(void* data); int16_t (*input_state)(void* data, const struct snes_keybind **snes_keybinds, bool port, unsigned device, unsigned index, unsigned id); bool (*key_pressed)(void* data, int key); void (*free)(void* data); const char *ident; } input_driver_t; typedef struct video_driver { void* (*init)(const video_info_t *video, const input_driver_t **input, void **input_data); // Should the video driver act as an input driver as well? :) The video init might preinitialize an input driver to override the settings in case the video driver relies on input driver for event handling, e.g. bool (*frame)(void* data, const void* frame, unsigned width, unsigned height, unsigned pitch, const char *msg); // msg is for showing a message on the screen along with the video frame. void (*set_nonblock_state)(void* data, bool toggle); // Should we care about syncing to vblank? Fast forwarding. // Is the window still active? bool (*alive)(void *data); bool (*focus)(void *data); // Does the window have focus? bool (*xml_shader)(void *data, const char *path); // Sets XML-shader. Might not be implemented. void (*free)(void* data); const char *ident; } video_driver_t; typedef struct driver { const audio_driver_t *audio; const video_driver_t *video; const input_driver_t *input; void *audio_data; void *video_data; void *input_data; } driver_t; void init_drivers(void); void uninit_drivers(void); void init_video_input(void); void uninit_video_input(void); void init_audio(void); void uninit_audio(void); extern driver_t driver; //////////////////////////////////////////////// Backends extern const audio_driver_t audio_rsound; extern const audio_driver_t audio_oss; extern const audio_driver_t audio_alsa; extern const audio_driver_t audio_roar; extern const audio_driver_t audio_openal; extern const audio_driver_t audio_jack; extern const audio_driver_t audio_sdl; extern const audio_driver_t audio_xa; extern const audio_driver_t audio_pulse; extern const audio_driver_t audio_ext; extern const video_driver_t video_gl; extern const video_driver_t video_xvideo; extern const video_driver_t video_sdl; extern const video_driver_t video_ext; extern const input_driver_t input_sdl; extern const input_driver_t input_x; //////////////////////////////////////////////// #endif