Jamoma API  0.6.0.a19
CAVolumeCurve.h
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41 #if !defined(__CAVolumeCurve_h__)
42 #define __CAVolumeCurve_h__
43 
44 //=============================================================================
45 // Includes
46 //=============================================================================
47 
48 #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
49  #include <CoreAudio/CoreAudioTypes.h>
50 #else
51  #include <CoreAudioTypes.h>
52 #endif
53 #include <map>
54 
55 //=============================================================================
56 // Types
57 //=============================================================================
58 
59 struct CARawPoint
60 {
61  SInt32 mMinimum;
62  SInt32 mMaximum;
63 
64  CARawPoint() : mMinimum(0), mMaximum(0) {}
65  CARawPoint(const CARawPoint& inPoint) : mMinimum(inPoint.mMinimum), mMaximum(inPoint.mMaximum) {}
66  CARawPoint(SInt32 inMinimum, SInt32 inMaximum) : mMinimum(inMinimum), mMaximum(inMaximum) {}
67  CARawPoint& operator=(const CARawPoint& inPoint) { mMinimum = inPoint.mMinimum; mMaximum = inPoint.mMaximum; return *this; }
68 
69  static bool Overlap(const CARawPoint& x, const CARawPoint& y) { return (x.mMinimum < y.mMaximum) && (x.mMaximum > y.mMinimum); }
70 };
71 
72 inline bool operator<(const CARawPoint& x, const CARawPoint& y) { return x.mMinimum < y.mMinimum; }
73 inline bool operator==(const CARawPoint& x, const CARawPoint& y) { return (x.mMinimum == y.mMinimum) && (x.mMaximum == y.mMaximum); }
74 inline bool operator!=(const CARawPoint& x, const CARawPoint& y) { return !(x == y); }
75 inline bool operator<=(const CARawPoint& x, const CARawPoint& y) { return (x < y) || (x == y); }
76 inline bool operator>=(const CARawPoint& x, const CARawPoint& y) { return !(x < y); }
77 inline bool operator>(const CARawPoint& x, const CARawPoint& y) { return !((x < y) || (x == y)); }
78 
79 struct CADBPoint
80 {
81  Float64 mMinimum;
82  Float64 mMaximum;
83 
84  CADBPoint() : mMinimum(0), mMaximum(0) {}
85  CADBPoint(const CADBPoint& inPoint) : mMinimum(inPoint.mMinimum), mMaximum(inPoint.mMaximum) {}
86  CADBPoint(Float64 inMinimum, Float64 inMaximum) : mMinimum(inMinimum), mMaximum(inMaximum) {}
87  CADBPoint& operator=(const CADBPoint& inPoint) { mMinimum = inPoint.mMinimum; mMaximum = inPoint.mMaximum; return *this; }
88 
89  static bool Overlap(const CADBPoint& x, const CADBPoint& y) { return (x.mMinimum < y.mMaximum) && (x.mMaximum >= y.mMinimum); }
90 };
91 
92 inline bool operator<(const CADBPoint& x, const CADBPoint& y) { return x.mMinimum < y.mMinimum; }
93 inline bool operator==(const CADBPoint& x, const CADBPoint& y) { return (x.mMinimum == y.mMinimum) && (x.mMaximum == y.mMaximum); }
94 inline bool operator!=(const CADBPoint& x, const CADBPoint& y) { return !(x == y); }
95 inline bool operator<=(const CADBPoint& x, const CADBPoint& y) { return (x < y) || (x == y); }
96 inline bool operator>=(const CADBPoint& x, const CADBPoint& y) { return !(x < y); }
97 inline bool operator>(const CADBPoint& x, const CADBPoint& y) { return !((x < y) || (x == y)); }
98 
99 //=============================================================================
100 // CAVolumeCurve
101 //=============================================================================
102 
103 class CAVolumeCurve
104 {
105 
106 // Constants
107 public:
108  enum
109  {
110  kLinearCurve = 0,
111  kPow1Over3Curve = 1,
112  kPow1Over2Curve = 2,
113  kPow3Over4Curve = 3,
114  kPow3Over2Curve = 4,
115  kPow2Over1Curve = 5,
116  kPow3Over1Curve = 6,
117  kPow4Over1Curve = 7,
118  kPow5Over1Curve = 8,
119  kPow6Over1Curve = 9,
120  kPow7Over1Curve = 10,
121  kPow8Over1Curve = 11,
122  kPow9Over1Curve = 12,
123  kPow10Over1Curve = 13,
124  kPow11Over1Curve = 14,
125  kPow12Over1Curve = 15
126  };
127 
128 // Construction/Destruction
129 public:
130  CAVolumeCurve();
131  virtual ~CAVolumeCurve();
132 
133 // Attributes
134 public:
135  UInt32 GetTag() const { return mTag; }
136  void SetTag(UInt32 inTag) { mTag = inTag; }
137  SInt32 GetMinimumRaw() const;
138  SInt32 GetMaximumRaw() const;
139  Float64 GetMinimumDB() const;
140  Float64 GetMaximumDB() const;
141 
142  void SetIsApplyingTransferFunction(bool inIsApplyingTransferFunction) { mIsApplyingTransferFunction = inIsApplyingTransferFunction; }
143  int GetTransferFunction() const { return mTransferFunction; }
144  void SetTransferFunction(int inTransferFunction);
145 
146 // Operations
147 public:
148  void AddRange(SInt32 mMinRaw, SInt32 mMaxRaw, Float64 inMinDB, Float64 inMaxDB);
149  void ResetRange();
150  bool CheckForContinuity() const;
151 
152  SInt32 ConvertDBToRaw(Float64 inDB) const;
153  Float64 ConvertRawToDB(SInt32 inRaw) const;
154  Float64 ConvertRawToScalar(SInt32 inRaw) const;
155  Float64 ConvertDBToScalar(Float64 inDB) const;
156  SInt32 ConvertScalarToRaw(Float64 inScalar) const;
157  Float64 ConvertScalarToDB(Float64 inScalar) const;
158 
159 // Implementation
160 private:
161  typedef std::map<CARawPoint, CADBPoint> CurveMap;
162 
163  UInt32 mTag;
164  CurveMap mCurveMap;
165  bool mIsApplyingTransferFunction;
166  UInt32 mTransferFunction;
167  Float64 mRawToScalarExponentNumerator;
168  Float64 mRawToScalarExponentDenominator;
169 
170 };
171 
172 #endif
bool TTFOUNDATION_EXPORT operator!=(const TTObject &anObject, const TTObject &anotherObject)
Compare two objects for inequality.
Definition: TTObject.cpp:173
bool TTFOUNDATION_EXPORT operator==(const TTObject &anObject, const TTObject &anotherObject)
Compare two objects for equality.
Definition: TTObject.cpp:167