/* SSNES - A frontend for libretro. * Copyright (C) 2010-2012 - Hans-Kristian Arntzen * * 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 "boolean.h" #include #include #include "msvc/msvc_compat.h" #include "input/keysym.h" #define AUDIO_CHUNK_SIZE_BLOCKING 64 #define AUDIO_CHUNK_SIZE_NONBLOCKING 2048 // So we don't get complete line-noise when fast-forwarding audio. #define AUDIO_MAX_RATIO 16 // libretro has 12 buttons from 0-11 (libretro.h) #define SSNES_FIRST_META_KEY 12 enum { SSNES_FAST_FORWARD_KEY = SSNES_FIRST_META_KEY, 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_FRAMEADVANCE, SSNES_RESET, SSNES_SHADER_NEXT, SSNES_SHADER_PREV, SSNES_CHEAT_INDEX_PLUS, SSNES_CHEAT_INDEX_MINUS, SSNES_CHEAT_TOGGLE, SSNES_SCREENSHOT, SSNES_DSP_CONFIG, SSNES_MUTE, SSNES_NETPLAY_FLIP, SSNES_SLOWMOTION, #ifdef SSNES_CONSOLE SSNES_CHEAT_INPUT, SSNES_SRAM_WRITE_PROTECT, #endif SSNES_BIND_LIST_END }; struct snes_keybind { bool valid; int id; enum ssnes_key key; // PC only uses lower 16-bits. // Full 64-bit can be used for port-specific purposes, like simplifying multiple binds, etc. uint64_t joykey; uint32_t joyaxis; }; typedef struct video_info { unsigned width; unsigned height; bool fullscreen; bool vsync; bool force_aspect; bool smooth; unsigned input_scale; // Maximum input size: SSNES_SCALE_BASE * input_scale 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; size_t (*write_avail)(void *data); // Optional size_t (*buffer_size)(void *data); // Optional } audio_driver_t; #define AXIS_NEG(x) (((uint32_t)(x) << 16) | UINT16_C(0xFFFF)) #define AXIS_POS(x) ((uint32_t)(x) | UINT32_C(0xFFFF0000)) #define AXIS_NONE UINT32_C(0xFFFFFFFF) #define AXIS_DIR_NONE UINT16_C(0xFFFF) #define AXIS_NEG_GET(x) (((uint32_t)(x) >> 16) & UINT16_C(0xFFFF)) #define AXIS_POS_GET(x) ((uint32_t)(x) & UINT16_C(0xFFFF)) #define NO_BTN UINT16_C(0xFFFF) // 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, unsigned 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; // Callbacks essentially useless on PC, but useful on consoles where the drivers are used for more stuff. #ifdef SSNES_CONSOLE void (*set_swap_block_state)(void *data, bool toggle); // Block swapping from being called in ::frame(). void (*swap)(void *data); // Explicitly swap buffers. Only useful when set_swap_block_state() is set to true. void (*set_aspect_ratio)(void *data, unsigned aspectratio_idx); // TODO: refactor this properly to float. #endif void (*set_rotation)(void *data, unsigned rotation); } 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 init_drivers_pre(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 audio_driver_t audio_dsound; extern const audio_driver_t audio_coreaudio; extern const audio_driver_t audio_xenon360; extern const audio_driver_t audio_xdk360; extern const audio_driver_t audio_ps3; extern const audio_driver_t audio_wii; extern const video_driver_t video_gl; extern const video_driver_t video_wii; extern const video_driver_t video_xenon360; extern const video_driver_t video_xvideo; extern const video_driver_t video_xdk360; 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; extern const input_driver_t input_ps3; extern const input_driver_t input_xenon360; extern const input_driver_t input_wii; extern const input_driver_t input_xdk360; //////////////////////////////////////////////// // Convenience macros. #ifdef HAVE_GRIFFIN #include "console/griffin/hook.h" #else #define audio_init_func(device, rate, latency) driver.audio->init(device, rate, latency) #define audio_write_func(buf, size) driver.audio->write(driver.audio_data, buf, size) #define audio_stop_func() driver.audio->stop(driver.audio_data) #define audio_start_func() driver.audio->start(driver.audio_data) #define audio_set_nonblock_state_func(state) driver.audio->set_nonblock_state(driver.audio_data, state) #define audio_free_func() driver.audio->free(driver.audio_data) #define audio_use_float_func() driver.audio->use_float(driver.audio_data) #define audio_write_avail_func() driver.audio->write_avail(driver.audio_data) #define audio_buffer_size_func() driver.audio->buffer_size(driver.audio_data) #define video_init_func(video_info, input, input_data) \ driver.video->init(video_info, input, input_data) #define video_frame_func(data, width, height, pitch, msg) \ driver.video->frame(driver.video_data, data, width, height, pitch, msg) #define video_set_nonblock_state_func(state) driver.video->set_nonblock_state(driver.video_data, state) #define video_alive_func() driver.video->alive(driver.video_data) #define video_focus_func() driver.video->focus(driver.video_data) #define video_xml_shader_func(path) driver.video->xml_shader(driver.video_data, path) #define video_set_rotation_func(rotate) driver.video->set_rotation(driver.video_data, rotate) #define video_set_aspect_ratio_func(aspect_idx) driver.video->set_aspect_ratio(driver.video_data, aspect_idx) #define video_free_func() driver.video->free(driver.video_data) #define input_init_func() driver.input->init() #define input_poll_func() driver.input->poll(driver.input_data) #define input_input_state_func(snes_keybinds, port, device, index, id) \ driver.input->input_state(driver.input_data, snes_keybinds, port, device, index, id) #define input_key_pressed_func(key) driver.input->key_pressed(driver.input_data, key) #define input_free_func() driver.input->free(driver.input_data) #endif #endif