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CACFNumber.h

/*    Copyright:  © Copyright 2005 Apple Computer, Inc. All rights reserved.

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*/
/*=============================================================================
      CACFNumber.h

=============================================================================*/
#if !defined(__CACFNumber_h__)
#define __CACFNumber_h__

//=============================================================================
//    Includes
//=============================================================================

#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
      #include <CoreAudio/CoreAudioTypes.h>
      #include <CoreFoundation/CFNumber.h>
#else
      #include <CoreAudioTypes.h>
      #include <CFNumber.h>
#endif

//=============================================================================
//    CACFNumber
//=============================================================================

class CACFNumber
{
//    Construction/Destruction
public:
                        CACFNumber(CFNumberRef inCFNumber, bool inWillRelease = true) : mCFNumber(inCFNumber), mWillRelease(inWillRelease) {}
                        CACFNumber(SInt32 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberSInt32Type, &inValue)), mWillRelease(true) {}
                        CACFNumber(UInt32 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberSInt32Type, &inValue)), mWillRelease(true) {}
                        CACFNumber(SInt64 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberSInt64Type, &inValue)), mWillRelease(true) {}
                        CACFNumber(UInt64 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberSInt64Type, &inValue)), mWillRelease(true) {}
                        CACFNumber(Float32 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberFloat32Type, &inValue)), mWillRelease(true) {}
                        CACFNumber(Float64 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberFloat64Type, &inValue)), mWillRelease(true) {}
                        ~CACFNumber() { Release(); }
                        CACFNumber(const CACFNumber& inNumber) : mCFNumber(inNumber.mCFNumber), mWillRelease(inNumber.mWillRelease) { Retain(); }
      CACFNumber& operator=(const CACFNumber& inNumber) { Release(); mCFNumber = inNumber.mCFNumber; mWillRelease = inNumber.mWillRelease; Retain(); return *this; }
      CACFNumber& operator=(CFNumberRef inCFNumber) { Release(); mCFNumber = inCFNumber; mWillRelease = true; return *this; }

private:
      void        Retain() { if(mWillRelease && (mCFNumber != NULL)) { CFRetain(mCFNumber); } }
      void        Release() { if(mWillRelease && (mCFNumber != NULL)) { CFRelease(mCFNumber); } }
      
      CFNumberRef mCFNumber;
      bool        mWillRelease;

//    Operations
public:
      void        AllowRelease() { mWillRelease = true; }
      void        DontAllowRelease() { mWillRelease = false; }
      bool        IsValid() { return mCFNumber != NULL; }

//    Value Access
public:
      CFNumberRef GetCFNumber() const { return mCFNumber; }
      CFNumberRef CopyCFNumber() const { if(mCFNumber != NULL) { CFRetain(mCFNumber); } return mCFNumber; }

      SInt8       GetSInt8() const { SInt8 theAnswer = 0; if(mCFNumber != NULL) { CFNumberGetValue(mCFNumber, kCFNumberSInt8Type, &theAnswer); } return theAnswer; }
      SInt32            GetSInt32() const { SInt32 theAnswer = 0; if(mCFNumber != NULL) { CFNumberGetValue(mCFNumber, kCFNumberSInt32Type, &theAnswer); } return theAnswer; }
      Float32           GetFloat32() const { Float32 theAnswer = 0.0; if(mCFNumber != NULL) { CFNumberGetValue(mCFNumber, kCFNumberFloat32Type, &theAnswer); } return theAnswer; }
      Float32           GetFixed32() const;
      SInt64            GetSInt64() const { SInt64 theAnswer = 0; if(mCFNumber != NULL) { CFNumberGetValue(mCFNumber, kCFNumberSInt64Type, &theAnswer); } return theAnswer; }
};

#endif

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