livetrax/libs/appleutility/CoreAudio/PublicUtility/CAComponentDescription.h

/*
     File: CAComponentDescription.h
 Abstract: Part of CoreAudio Utility Classes
  Version: 1.1

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 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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*/
#ifndef __CAComponentDescription_h__
#define __CAComponentDescription_h__

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

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

void CAShowComponentDescription(const AudioComponentDescription *desc);

// ____________________________________________________________________________
//
//	CAComponentDescription
class CAComponentDescription : public AudioComponentDescription {
public:
	CAComponentDescription() { memset (this, 0, sizeof (AudioComponentDescription)); }

	CAComponentDescription (OSType inType, OSType inSubtype = 0, OSType inManu = 0);

	CAComponentDescription(const AudioComponentDescription& desc) { memcpy (this, &desc, sizeof (AudioComponentDescription)); }

	// _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
	//
	// interrogation

	bool	IsAU () const;

	bool	IsAUFX() const { return componentType == kAudioUnitType_Effect; }
	bool	IsAUFM() const { return componentType == kAudioUnitType_MusicEffect; }

    bool    IsAUMI() const { return componentType == 'aumi' /*kAudioUnitType_MIDIProcessor*/; }

	bool	IsAUAX () const { return componentType == 'auax' /*kAudioUnitType_Auxiliary*/; }

	bool 	IsEffect () const { return IsAUFX() || IsAUFM() || IsPanner(); }

	bool	IsOffline () const { return componentType == 'auol' /*kAudioUnitType_Offline*/; }

	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 AudioComponentCount(const_cast<CAComponentDescription*>(this)); }

		// does a semantic match where "wild card" values for type, subtype, manu will match
	bool	Matches (const AudioComponentDescription &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 AudioComponentDescription *desc, FILE* file);
	friend void CAShowComponentDescription (const AudioComponentDescription *desc);
};

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

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

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

#endif