VirtualAudioDevice.h   [plain text]


/*
  File:VirtualAudioDevice.h

  Contains:

  Version:1.0.0

  Copyright:Copyright  1997-2002 by Apple Computer, Inc., All Rights Reserved.

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*/

#ifndef _SAMPLEAUDIODEVICE_H
#define _SAMPLEAUDIODEVICE_H

#include <IOKit/audio/IOAudioDevice.h>

#define AUDIO_ENGINES_KEY	"AudioEngines"
#define DESCRIPTION_KEY		"Description"
#define BLOCK_SIZE_KEY		"BlockSize"
#define NUM_BLOCKS_KEY		"NumBlocks"
#define NUM_STREAMS_KEY		"NumStreams"
#define FORMATS_KEY		"Formats"
#define SAMPLE_RATES_KEY	"SampleRates"

#define VirtualAudioDevice com_apple_driver_VirtualAudioDevice

class VirtualAudioDevice : public IOAudioDevice
{
	friend class com_apple_driver_VirtualAudioEngine;
	
	OSDeclareDefaultStructors(VirtualAudioDevice)
	virtual IOService* probe(	IOService* provider, SInt32* score );
	virtual bool initHardware(IOService *provider);
	virtual bool createAudioEngines();
	
	static IOReturn volumeChangeHandler(IOService *target, IOAudioControl *volumeControl, SInt32 oldValue, SInt32 newValue);
	virtual IOReturn volumeChanged(IOAudioControl *volumeControl, SInt32 oldValue, SInt32 newValue);
	
	static IOReturn outputMuteChangeHandler(IOService *target, IOAudioControl *muteControl, SInt32 oldValue, SInt32 newValue);
	virtual IOReturn outputMuteChanged(IOAudioControl *muteControl, SInt32 oldValue, SInt32 newValue);
	
	static IOReturn gainChangeHandler(IOService *target, IOAudioControl *gainControl, SInt32 oldValue, SInt32 newValue);
	virtual IOReturn gainChanged(IOAudioControl *gainControl, SInt32 oldValue, SInt32 newValue);
	
	static IOReturn inputMuteChangeHandler(IOService *target, IOAudioControl *muteControl, SInt32 oldValue, SInt32 newValue);
	virtual IOReturn inputMuteChanged(IOAudioControl *muteControl, SInt32 oldValue, SInt32 newValue);
	
	static IOReturn passThruChangeHandler(IOService *target, IOAudioControl *passThruControl, SInt32 oldValue, SInt32 newValue);
	virtual IOReturn passThruChanged(IOAudioControl *passThruControl, SInt32 oldValue, SInt32 newValue);
	virtual bool FindSoundNode (void);

};

#endif /* _SAMPLEAUDIODEVICE_H */