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214 lines
7.1 KiB
C
214 lines
7.1 KiB
C
/* SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
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* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
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*
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* Some code herein may be based on code found in BSNES.
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*
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* SSNES is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with SSNES.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __DRIVER__H
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#define __DRIVER__H
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#include <sys/types.h>
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#include "boolean.h"
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#include <stdlib.h>
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#include <stdint.h>
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#include "msvc/msvc_compat.h"
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#include "input/keysym.h"
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#define AUDIO_CHUNK_SIZE_BLOCKING 64
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#define AUDIO_CHUNK_SIZE_NONBLOCKING 2048 // So we don't get complete line-noise when fast-forwarding audio.
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#define AUDIO_MAX_RATIO 16
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// SNES has 12 buttons from 0-11 (libsnes.hpp)
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#define SSNES_FIRST_META_KEY 12
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enum
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{
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SSNES_FAST_FORWARD_KEY = SSNES_FIRST_META_KEY,
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SSNES_FAST_FORWARD_HOLD_KEY,
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SSNES_LOAD_STATE_KEY,
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SSNES_SAVE_STATE_KEY,
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SSNES_FULLSCREEN_TOGGLE_KEY,
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SSNES_QUIT_KEY,
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SSNES_STATE_SLOT_PLUS,
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SSNES_STATE_SLOT_MINUS,
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SSNES_AUDIO_INPUT_RATE_PLUS,
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SSNES_AUDIO_INPUT_RATE_MINUS,
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SSNES_REWIND,
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SSNES_MOVIE_RECORD_TOGGLE,
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SSNES_PAUSE_TOGGLE,
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SSNES_FRAMEADVANCE,
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SSNES_RESET,
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SSNES_SHADER_NEXT,
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SSNES_SHADER_PREV,
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SSNES_CHEAT_INDEX_PLUS,
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SSNES_CHEAT_INDEX_MINUS,
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SSNES_CHEAT_TOGGLE,
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SSNES_SCREENSHOT,
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SSNES_DSP_CONFIG,
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SSNES_MUTE,
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SSNES_NETPLAY_FLIP,
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SSNES_SLOWMOTION,
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#ifdef SSNES_CONSOLE
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SSNES_CHEAT_INPUT,
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SSNES_SRAM_WRITE_PROTECT,
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#endif
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SSNES_BIND_LIST_END
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};
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struct snes_keybind
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{
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bool valid;
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int id;
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enum ssnes_key key;
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// PC only uses lower 16-bits.
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// Full 64-bit can be used for port-specific purposes, like simplifying multiple binds, etc.
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uint64_t joykey;
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uint32_t joyaxis;
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};
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typedef struct video_info
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{
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unsigned width;
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unsigned height;
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bool fullscreen;
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bool vsync;
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bool force_aspect;
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bool smooth;
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unsigned input_scale; // Maximum input size: SSNES_SCALE_BASE * input_scale
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bool rgb32; // Use 32-bit RGBA rather than native XBGR1555.
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} video_info_t;
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typedef struct audio_driver
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{
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void *(*init)(const char *device, unsigned rate, unsigned latency);
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ssize_t (*write)(void *data, const void *buf, size_t size);
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bool (*stop)(void *data);
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bool (*start)(void *data);
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void (*set_nonblock_state)(void *data, bool toggle); // Should we care about blocking in audio thread? Fast forwarding.
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void (*free)(void *data);
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bool (*use_float)(void *data); // Defines if driver will take standard floating point samples, or int16_t samples.
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const char *ident;
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size_t (*write_avail)(void *data); // Optional
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size_t (*buffer_size)(void *data); // Optional
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} audio_driver_t;
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#define AXIS_NEG(x) (((uint32_t)(x) << 16) | UINT16_C(0xFFFF))
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#define AXIS_POS(x) ((uint32_t)(x) | UINT32_C(0xFFFF0000))
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#define AXIS_NONE UINT32_C(0xFFFFFFFF)
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#define AXIS_DIR_NONE UINT16_C(0xFFFF)
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#define AXIS_NEG_GET(x) (((uint32_t)(x) >> 16) & UINT16_C(0xFFFF))
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#define AXIS_POS_GET(x) ((uint32_t)(x) & UINT16_C(0xFFFF))
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#define NO_BTN UINT16_C(0xFFFF) // I hope no joypad will ever have this many buttons ... ;)
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#define HAT_UP_MASK (1 << 15)
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#define HAT_DOWN_MASK (1 << 14)
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#define HAT_LEFT_MASK (1 << 13)
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#define HAT_RIGHT_MASK (1 << 12)
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#define HAT_MAP(x, hat) ((x & ((1 << 12) - 1)) | hat)
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#define HAT_MASK (HAT_UP_MASK | HAT_DOWN_MASK | HAT_LEFT_MASK | HAT_RIGHT_MASK)
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#define GET_HAT_DIR(x) (x & HAT_MASK)
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#define GET_HAT(x) (x & (~HAT_MASK))
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typedef struct input_driver
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{
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void *(*init)(void);
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void (*poll)(void *data);
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int16_t (*input_state)(void *data, const struct snes_keybind **snes_keybinds, bool port, unsigned device, unsigned index, unsigned id);
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bool (*key_pressed)(void *data, int key);
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void (*free)(void *data);
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const char *ident;
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} input_driver_t;
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typedef struct video_driver
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{
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void *(*init)(const video_info_t *video, const input_driver_t **input, void **input_data);
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// 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.
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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.
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void (*set_nonblock_state)(void *data, bool toggle); // Should we care about syncing to vblank? Fast forwarding.
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// Is the window still active?
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bool (*alive)(void *data);
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bool (*focus)(void *data); // Does the window have focus?
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bool (*xml_shader)(void *data, const char *path); // Sets XML-shader. Might not be implemented.
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void (*free)(void *data);
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const char *ident;
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// Callbacks essentially useless on PC, but useful on consoles where the drivers are used for more stuff.
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#ifdef SSNES_CONSOLE
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void (*set_swap_block_state)(void *data, bool toggle); // Block swapping from being called in ::frame().
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void (*swap)(void *data); // Explicitly swap buffers. Only useful when set_swap_block_state() is set to true.
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#endif
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} video_driver_t;
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typedef struct driver
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{
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const audio_driver_t *audio;
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const video_driver_t *video;
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const input_driver_t *input;
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void *audio_data;
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void *video_data;
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void *input_data;
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} driver_t;
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void init_drivers(void);
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void uninit_drivers(void);
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void init_video_input(void);
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void uninit_video_input(void);
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void init_audio(void);
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void uninit_audio(void);
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extern driver_t driver;
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//////////////////////////////////////////////// Backends
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extern const audio_driver_t audio_rsound;
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extern const audio_driver_t audio_oss;
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extern const audio_driver_t audio_alsa;
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extern const audio_driver_t audio_roar;
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extern const audio_driver_t audio_openal;
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extern const audio_driver_t audio_jack;
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extern const audio_driver_t audio_sdl;
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extern const audio_driver_t audio_xa;
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extern const audio_driver_t audio_pulse;
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extern const audio_driver_t audio_ext;
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extern const audio_driver_t audio_dsound;
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extern const audio_driver_t audio_coreaudio;
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extern const audio_driver_t audio_xenon360;
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extern const audio_driver_t audio_xdk360;
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extern const audio_driver_t audio_ps3;
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extern const audio_driver_t audio_wii;
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extern const video_driver_t video_gl;
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extern const video_driver_t video_wii;
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extern const video_driver_t video_xenon360;
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extern const video_driver_t video_xvideo;
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extern const video_driver_t video_xdk360;
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extern const video_driver_t video_sdl;
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extern const video_driver_t video_ext;
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extern const input_driver_t input_sdl;
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extern const input_driver_t input_x;
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extern const input_driver_t input_ps3;
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extern const input_driver_t input_xenon360;
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extern const input_driver_t input_wii;
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extern const input_driver_t input_xdk360;
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////////////////////////////////////////////////
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#endif
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