libs/appleutility/CAComponentDescription.h

   1 /*      Copyright:      © Copyright 2005 Apple Computer, Inc. All rights reserved.
   2
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   9                         In consideration of your agreement to abide by the following terms, and subject
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  37 */
  38 /*=============================================================================
  39         CAComponentDescription.h
  40
  41 =============================================================================*/
  42
  43 #ifndef __CAComponentDescription_h__
  44 #define __CAComponentDescription_h__
  45
  46 #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
  47         #include <CoreServices/CoreServices.h>
  48         #include <AudioUnit/AudioUnit.h>
  49 #else
  50         #include <ConditionalMacros.h>
  51         #include <CoreServices.h>
  52         #include <AudioUnit.h>
  53 #endif
  54
  55 #include "CACFDictionary.h"
  56 #include <stdio.h>
  57 #include <string.h>
  58
  59 #ifdef __cplusplus
  60 extern "C" {
  61 #endif
  62
  63 void CAShowComponentDescription(const ComponentDescription *desc);
  64
  65 #ifdef __cplusplus
  66 }
  67 #endif
  68
  69
  70 // ____________________________________________________________________________
  71 //
  72 //      CAComponentDescription
  73 class CAComponentDescription : public ComponentDescription {
  74 public:
  75         CAComponentDescription() { memset (this, 0, sizeof (ComponentDescription)); }
  76
  77         CAComponentDescription (OSType inType, OSType inSubtype = 0, OSType inManu = 0);
  78
  79         CAComponentDescription(const ComponentDescription& desc) { memcpy (this, &desc, sizeof (ComponentDescription)); }
  80
  81         // _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
  82         //
  83         // interrogation
  84
  85         bool    IsAU () const;
  86
  87         bool    IsAUFX() const { return componentType == kAudioUnitType_Effect; }
  88         bool    IsAUFM() const { return componentType == kAudioUnitType_MusicEffect; }
  89
  90         bool    IsEffect () const { return IsAUFX() || IsAUFM() || IsPanner(); }
  91
  92         bool    IsOffline () const { return componentType == 'auol'; }
  93
  94         bool    IsFConv () const { return componentType == kAudioUnitType_FormatConverter; }
  95
  96         bool    IsPanner () const { return componentType == kAudioUnitType_Panner; }
  97
  98         bool    IsMusicDevice () const { return componentType == kAudioUnitType_MusicDevice; }
  99
 100 #ifndef MAC_OS_X_VERSION_10_4
 101         bool    IsGenerator () const { return componentType =='augn'; }
 102 #else
 103         bool    IsGenerator () const { return componentType ==kAudioUnitType_Generator; }
 104 #endif
 105
 106         bool    IsOutput () const { return componentType == kAudioUnitType_Output; }
 107
 108         bool    IsSource () const { return IsMusicDevice() || IsGenerator(); }
 109
 110         OSType  Type () const { return componentType; }
 111         OSType  SubType () const { return componentSubType; }
 112         OSType  Manu () const { return componentManufacturer; }
 113
 114         int             Count() const { return CountComponents(const_cast<CAComponentDescription*>(this)); }
 115
 116                 // does a semantic match where "wild card" values for type, subtype, manu will match
 117         bool    Matches (const ComponentDescription &desc) const;
 118
 119         // _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
 120         //
 121         //      other
 122
 123         void    Print(FILE* file = stdout) const        { _CAShowComponentDescription (this, file); }
 124
 125         OSStatus                        Save (CFPropertyListRef *outData) const;
 126         OSStatus                        Restore (CFPropertyListRef &inData);
 127
 128 private:
 129         static void _CAShowComponentDescription (const ComponentDescription *desc, FILE* file);
 130         friend void CAShowComponentDescription (const ComponentDescription *desc);
 131 };
 132
 133 inline bool     operator< (const ComponentDescription& x, const ComponentDescription& y)
 134 {
 135         return memcmp (&x, &y, offsetof (ComponentDescription, componentFlags)) < 0;
 136 }
 137
 138 inline bool     operator== (const ComponentDescription& x, const ComponentDescription& y)
 139 {
 140         return !memcmp (&x, &y, offsetof (ComponentDescription, componentFlags));
 141 }
 142
 143 inline bool     operator!= (const ComponentDescription& x, const ComponentDescription& y)
 144 {
 145         return !(x == y);
 146 }
 147
 148 #endif