src/audio/SDL_sysaudio.h
author Sam Lantinga <slouken@libsdl.org>
Mon, 10 Jun 2002 20:42:53 +0000
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child 509 dad72daf44b3
permissions -rw-r--r--
Added Atari audio support (thanks Patrice!)
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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 "@(#) $Id$";
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#endif
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#ifndef _SDL_sysaudio_h
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#define _SDL_sysaudio_h
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#include "SDL_mutex.h"
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#include "SDL_thread.h"
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/* The SDL audio driver */
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typedef struct SDL_AudioDevice SDL_AudioDevice;
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/* Define the SDL audio driver structure */
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#define _THIS	SDL_AudioDevice *_this
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#ifndef _STATUS
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#define _STATUS	SDL_status *status
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#endif
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struct SDL_AudioDevice {
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	/* * * */
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	/* The name of this audio driver */
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	const char *name;
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	/* * * */
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	/* The description of this audio driver */
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	const char *desc;
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	/* * * */
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	/* Public driver functions */
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	int  (*OpenAudio)(_THIS, SDL_AudioSpec *spec);
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	void (*ThreadInit)(_THIS);	/* Called by audio thread at start */
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	void (*WaitAudio)(_THIS);
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	void (*PlayAudio)(_THIS);
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	Uint8 *(*GetAudioBuf)(_THIS);
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	void (*WaitDone)(_THIS);
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	void (*CloseAudio)(_THIS);
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	/* * * */
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	/* Lock / Unlock functions added for the Mac port */
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	void (*LockAudio)(_THIS);
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	void (*UnlockAudio)(_THIS);
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	/* * * */
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	/* Data common to all devices */
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	/* The current audio specification (shared with audio thread) */
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	SDL_AudioSpec spec;
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	/* An audio conversion block for audio format emulation */
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	SDL_AudioCVT convert;
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	/* Current state flags */
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	int enabled;
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	int paused;
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	int opened;
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	/* Fake audio buffer for when the audio hardware is busy */
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	Uint8 *fake_stream;
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	/* A semaphore for locking the mixing buffers */
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	SDL_mutex *mixer_lock;
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	/* A thread to feed the audio device */
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	SDL_Thread *thread;
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	Uint32 threadid;
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	/* * * */
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	/* Data private to this driver */
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	struct SDL_PrivateAudioData *hidden;
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	/* * * */
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	/* The function used to dispose of this structure */
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	void (*free)(_THIS);
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};
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#undef _THIS
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typedef struct AudioBootStrap {
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	const char *name;
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	const char *desc;
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	int (*available)(void);
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	SDL_AudioDevice *(*create)(int devindex);
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} AudioBootStrap;
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#ifdef OPENBSD_AUDIO_SUPPORT
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extern AudioBootStrap OPENBSD_AUDIO_bootstrap;
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#endif
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#ifdef OSS_SUPPORT
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extern AudioBootStrap DSP_bootstrap;
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extern AudioBootStrap DMA_bootstrap;
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#endif
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#ifdef ALSA_SUPPORT
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extern AudioBootStrap ALSA_bootstrap;
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#endif
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#ifdef SUNAUDIO_SUPPORT
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extern AudioBootStrap SUNAUDIO_bootstrap;
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#endif
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#ifdef DMEDIA_SUPPORT
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extern AudioBootStrap DMEDIA_bootstrap;
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#endif
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#ifdef ARTSC_SUPPORT
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extern AudioBootStrap ARTSC_bootstrap;
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#endif
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#ifdef ESD_SUPPORT
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extern AudioBootStrap ESD_bootstrap;
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#endif
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#ifdef NAS_SUPPORT
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extern AudioBootStrap NAS_bootstrap;
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#endif
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#ifdef ENABLE_DIRECTX
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extern AudioBootStrap DSOUND_bootstrap;
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#endif
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#ifdef ENABLE_WINDIB
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extern AudioBootStrap WAVEOUT_bootstrap;
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#endif
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#ifdef _AIX
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extern AudioBootStrap Paud_bootstrap;
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#endif
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#ifdef __BEOS__
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extern AudioBootStrap BAUDIO_bootstrap;
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#endif
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#if defined(macintosh) || TARGET_API_MAC_CARBON
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extern AudioBootStrap SNDMGR_bootstrap;
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#endif
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#ifdef ENABLE_AHI
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extern AudioBootStrap AHI_bootstrap;
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#endif
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#ifdef MINTAUDIO_SUPPORT
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extern AudioBootStrap MINTAUDIO_bootstrap;
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#endif
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#ifdef DISKAUD_SUPPORT
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extern AudioBootStrap DISKAUD_bootstrap;
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#endif
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/* This is the current audio device */
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extern SDL_AudioDevice *current_audio;
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#endif /* _SDL_sysaudio_h */