libs/appleutility/CACFNumber.h

   1 /*      Copyright:      � Copyright 2005 Apple Computer, Inc. All rights reserved.
   2
   3         Disclaimer:     IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
   4                         ("Apple") in consideration of your agreement to the following terms, and your
   5                         use, installation, modification or redistribution of this Apple software
   6                         constitutes acceptance of these terms.  If you do not agree with these terms,
   7                         please do not use, install, modify or redistribute this Apple software.
   8
   9                         In consideration of your agreement to abide by the following terms, and subject
  10                         to these terms, Apple grants you a personal, non-exclusive license, under Apple�s
  11                         copyrights in this original Apple software (the "Apple Software"), to use,
  12                         reproduce, modify and redistribute the Apple Software, with or without
  13                         modifications, in source and/or binary forms; provided that if you redistribute
  14                         the Apple Software in its entirety and without modifications, you must retain
  15                         this notice and the following text and disclaimers in all such redistributions of
  16                         the Apple Software.  Neither the name, trademarks, service marks or logos of
  17                         Apple Computer, Inc. may be used to endorse or promote products derived from the
  18                         Apple Software without specific prior written permission from Apple.  Except as
  19                         expressly stated in this notice, no other rights or licenses, express or implied,
  20                         are granted by Apple herein, including but not limited to any patent rights that
  21                         may be infringed by your derivative works or by other works in which the Apple
  22                         Software may be incorporated.
  23
  24                         The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
  25                         WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
  26                         WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  27                         PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
  28                         COMBINATION WITH YOUR PRODUCTS.
  29
  30                         IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
  31                         CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  32                         GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33                         ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
  34                         OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
  35                         (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
  36                         ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /*=============================================================================
  39         CACFNumber.h
  40
  41 =============================================================================*/
  42 #if !defined(__CACFNumber_h__)
  43 #define __CACFNumber_h__
  44
  45 //=============================================================================
  46 //      Includes
  47 //=============================================================================
  48
  49 #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
  50         #include <CoreAudio/CoreAudioTypes.h>
  51         #include <CoreFoundation/CFNumber.h>
  52 #else
  53         #include <CoreAudioTypes.h>
  54         #include <CFNumber.h>
  55 #endif
  56
  57 //=============================================================================
  58 //      CACFNumber
  59 //=============================================================================
  60
  61 class   CACFNumber
  62 {
  63 //      Construction/Destruction
  64 public:
  65                                 CACFNumber(CFNumberRef inCFNumber, bool inWillRelease = true) : mCFNumber(inCFNumber), mWillRelease(inWillRelease) {}
  66                                 CACFNumber(SInt32 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberSInt32Type, &inValue)), mWillRelease(true) {}
  67                                 CACFNumber(UInt32 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberSInt32Type, &inValue)), mWillRelease(true) {}
  68                                 CACFNumber(SInt64 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberSInt64Type, &inValue)), mWillRelease(true) {}
  69                                 CACFNumber(UInt64 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberSInt64Type, &inValue)), mWillRelease(true) {}
  70                                 CACFNumber(Float32 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberFloat32Type, &inValue)), mWillRelease(true) {}
  71                                 CACFNumber(Float64 inValue) : mCFNumber(CFNumberCreate(NULL, kCFNumberFloat64Type, &inValue)), mWillRelease(true) {}
  72                                 ~CACFNumber() { Release(); }
  73                                 CACFNumber(const CACFNumber& inNumber) : mCFNumber(inNumber.mCFNumber), mWillRelease(inNumber.mWillRelease) { Retain(); }
  74         CACFNumber&     operator=(const CACFNumber& inNumber) { Release(); mCFNumber = inNumber.mCFNumber; mWillRelease = inNumber.mWillRelease; Retain(); return *this; }
  75         CACFNumber&     operator=(CFNumberRef inCFNumber) { Release(); mCFNumber = inCFNumber; mWillRelease = true; return *this; }
  76
  77 private:
  78         void            Retain() { if(mWillRelease && (mCFNumber != NULL)) { CFRetain(mCFNumber); } }
  79         void            Release() { if(mWillRelease && (mCFNumber != NULL)) { CFRelease(mCFNumber); } }
  80
  81         CFNumberRef     mCFNumber;
  82         bool            mWillRelease;
  83
  84 //      Operations
  85 public:
  86         void            AllowRelease() { mWillRelease = true; }
  87         void            DontAllowRelease() { mWillRelease = false; }
  88         bool            IsValid() { return mCFNumber != NULL; }
  89
  90 //      Value Access
  91 public:
  92         CFNumberRef     GetCFNumber() const { return mCFNumber; }
  93         CFNumberRef     CopyCFNumber() const { if(mCFNumber != NULL) { CFRetain(mCFNumber); } return mCFNumber; }
  94
  95         SInt8           GetSInt8() const { SInt8 theAnswer = 0; if(mCFNumber != NULL) { CFNumberGetValue(mCFNumber, kCFNumberSInt8Type, &theAnswer); } return theAnswer; }
  96         SInt32          GetSInt32() const { SInt32 theAnswer = 0; if(mCFNumber != NULL) { CFNumberGetValue(mCFNumber, kCFNumberSInt32Type, &theAnswer); } return theAnswer; }
  97         Float32         GetFloat32() const { Float32 theAnswer = 0.0; if(mCFNumber != NULL) { CFNumberGetValue(mCFNumber, kCFNumberFloat32Type, &theAnswer); } return theAnswer; }
  98         Float32         GetFixed32() const;
  99         SInt64          GetSInt64() const { SInt64 theAnswer = 0; if(mCFNumber != NULL) { CFNumberGetValue(mCFNumber, kCFNumberSInt64Type, &theAnswer); } return theAnswer; }
 100 };
 101
 102 #endif