livetrax/libs/appleutility/CAComponentDescription.h

/*	Copyright: 	<09> Copyright 2005 Apple Computer, Inc. All rights reserved.

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*/
/*=============================================================================
	CAComponentDescription.h
	
=============================================================================*/

#ifndef __CAComponentDescription_h__
#define __CAComponentDescription_h__

#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
	#include <CoreServices/CoreServices.h>
	#include <AudioUnit/AudioUnit.h>
#else
	#include <ConditionalMacros.h>
	#include <CoreServices.h>
	#include <AudioUnit.h>
#endif

#include "CACFDictionary.h"
#include <stdio.h>
#include <string.h>

#ifdef __cplusplus
extern "C" {
#endif

void CAShowComponentDescription(const ComponentDescription *desc);

#ifdef __cplusplus
}
#endif


// ____________________________________________________________________________
//
//	CAComponentDescription
class CAComponentDescription : public ComponentDescription {
public:
	CAComponentDescription() { memset (this, 0, sizeof (ComponentDescription)); }
	
	CAComponentDescription (OSType inType, OSType inSubtype = 0, OSType inManu = 0);

	CAComponentDescription(const ComponentDescription& desc) { memcpy (this, &desc, sizeof (ComponentDescription)); }
		
	// _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
	//
	// interrogation
	
	bool	IsAU () const;
	
	bool	IsAUFX() const { return componentType == kAudioUnitType_Effect; }
	bool	IsAUFM() const { return componentType == kAudioUnitType_MusicEffect; }
	
	bool 	IsEffect () const { return IsAUFX() || IsAUFM() || IsPanner(); }
	
	bool	IsOffline () const { return componentType == 'auol'; }
	
	bool 	IsFConv () const { return componentType == kAudioUnitType_FormatConverter; }
	
	bool	IsPanner () const { return componentType == kAudioUnitType_Panner; }
	
	bool	IsMusicDevice () const { return componentType == kAudioUnitType_MusicDevice; }
	
#ifndef MAC_OS_X_VERSION_10_4
	bool	IsGenerator () const { return componentType =='augn'; }
#else
	bool	IsGenerator () const { return componentType ==kAudioUnitType_Generator; }
#endif
	
	bool	IsOutput () const { return componentType == kAudioUnitType_Output; }
	
	bool	IsSource () const { return IsMusicDevice() || IsGenerator(); }
	
	OSType	Type () const { return componentType; }
	OSType	SubType () const { return componentSubType; }
	OSType 	Manu () const { return componentManufacturer; }

	int		Count() const { return CountComponents(const_cast<CAComponentDescription*>(this)); }
	
		// does a semantic match where "wild card" values for type, subtype, manu will match
	bool	Matches (const ComponentDescription &desc) const;
	
	// _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
	//
	//	other
	
	void	Print(FILE* file = stdout) const 	{ _CAShowComponentDescription (this, file); }

	OSStatus			Save (CFPropertyListRef *outData) const;
	OSStatus			Restore (CFPropertyListRef &inData);

private:
	static void _CAShowComponentDescription (const ComponentDescription *desc, FILE* file);
	friend void CAShowComponentDescription (const ComponentDescription *desc);
};

inline bool	operator< (const ComponentDescription& x, const ComponentDescription& y)
{
	return memcmp (&x, &y, offsetof (ComponentDescription, componentFlags)) < 0;
}

inline bool	operator== (const ComponentDescription& x, const ComponentDescription& y)
{
	return !memcmp (&x, &y, offsetof (ComponentDescription, componentFlags));
}

inline bool	operator!= (const ComponentDescription& x, const ComponentDescription& y)
{
	return !(x == y);
}

#endif