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/* SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
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* Copyright ( C ) 2010 - 2011 - Hans - Kristian Arntzen
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*
* 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 < http : //www.gnu.org/licenses/>.
*/
# ifndef __DRIVER__H
# define __DRIVER__H
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# include <sys/types.h>
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# include <stdbool.h>
# include <stdlib.h>
# include <stdint.h>
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# include <unistd.h>
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enum
{
SSNES_FAST_FORWARD_KEY = 0x666 , // Hurr, durr
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SSNES_FAST_FORWARD_HOLD_KEY ,
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SSNES_LOAD_STATE_KEY ,
SSNES_SAVE_STATE_KEY ,
SSNES_FULLSCREEN_TOGGLE_KEY ,
SSNES_QUIT_KEY ,
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SSNES_STATE_SLOT_PLUS ,
SSNES_STATE_SLOT_MINUS ,
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SSNES_AUDIO_INPUT_RATE_PLUS ,
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_RESET ,
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SSNES_SHADER_NEXT ,
SSNES_SHADER_PREV ,
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SSNES_CHEAT_INDEX_PLUS ,
SSNES_CHEAT_INDEX_MINUS ,
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SSNES_CHEAT_TOGGLE ,
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SSNES_SCREENSHOT ,
SSNES_DSP_CONFIG
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} ;
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struct snes_keybind
{
int id ;
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uint16_t key ;
uint16_t joykey ;
uint32_t joyaxis ;
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} ;
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typedef struct video_info
{
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unsigned width ;
unsigned height ;
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bool fullscreen ;
bool vsync ;
bool force_aspect ;
bool smooth ;
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int input_scale ; // HQ2X => 2, HQ4X => 4, None => 1
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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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void * ( * init ) ( const char * device , unsigned rate , unsigned latency ) ;
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ssize_t ( * write ) ( void * data , const void * buf , size_t size ) ;
bool ( * stop ) ( void * data ) ;
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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} audio_driver_t ;
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# define AXIS_NEG(x) (((uint32_t)(x) << 16) | 0xFFFFU)
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# define AXIS_POS(x) ((uint32_t)(x) | 0xFFFF0000U)
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# define AXIS_NONE (0xFFFFFFFFU)
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# define AXIS_NEG_GET(x) (((uint32_t)(x) >> 16) & 0xFFFFU)
# define AXIS_POS_GET(x) ((uint32_t)(x) & 0xFFFFU)
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# define NO_BTN ((uint16_t)0xFFFFU) // I hope no joypad will ever have this many buttons ... ;)
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# 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))
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typedef struct input_driver
{
void * ( * init ) ( void ) ;
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 ;
typedef struct video_driver
{
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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?
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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} 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 ;
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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 ;
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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 video_driver_t video_gl ;
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extern const video_driver_t video_xvideo ;
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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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////////////////////////////////////////////////
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# endif