/*

     File: CAComponentDescription.h 

 Abstract:  Part of CoreAudio Utility Classes  

  Version: 1.01 

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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    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 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