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namespace LinuxSampler { |
namespace LinuxSampler { |
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template<typename T> |
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class FixedArray { |
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public: |
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FixedArray(int capacity) { |
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iSize = 0; |
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iCapacity = capacity; |
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pData = new T[iCapacity]; |
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} |
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~FixedArray() { |
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delete pData; |
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pData = NULL; |
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} |
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inline int size() const { return iSize; } |
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inline int capacity() { return iCapacity; } |
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void add(T element) { |
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if (iSize >= iCapacity) throw Exception("Array out of bounds"); |
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pData[iSize++] = element; |
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} |
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T increment() { |
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if (iSize >= iCapacity) throw Exception("Array out of bounds"); |
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return pData[iSize++]; |
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} |
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void clear() { iSize = 0; } |
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void copy(const FixedArray<T>& array) { |
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if(array.size() >= capacity()) throw Exception("Not enough space to copy array"); |
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for (int i = 0; i < array.size(); i++) pData[i] = array[i]; |
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iSize = array.size(); |
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} |
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inline T& operator[](int idx) const { |
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return pData[idx]; |
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} |
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private: |
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T* pData; |
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int iSize; |
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int iCapacity; |
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}; |
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class SignalUnitRack; |
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/** |
/** |
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* A signal unit consist of internal signal generator (like envelope generator, |
* A signal unit consist of internal signal generator (like envelope generator, |
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* low frequency oscillator, etc) with a number of generator parameters which |
* low frequency oscillator, etc) with a number of generator parameters which |
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Parameter(const Parameter& Prm) { Copy(Prm); } |
Parameter(const Parameter& Prm) { Copy(Prm); } |
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void operator=(const Parameter& Prm) { Copy(Prm); } |
void operator=(const Parameter& Prm) { Copy(Prm); } |
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virtual void Copy(const Parameter& Prm) { |
void Copy(const Parameter& Prm) { |
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if (this == &Prm) return; |
if (this == &Prm) return; |
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pUnit = Prm.pUnit; |
pUnit = Prm.pUnit; |
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public: |
public: |
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ArrayList<SignalUnit::Parameter> Params; // The list of parameters which are modulating the signal unit |
ArrayList<SignalUnit::Parameter> Params; // The list of parameters which are modulating the signal unit |
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SignalUnit() : bActive(false), Level(0.0f), bCalculating(false), uiDelayTrigger(0) { } |
SignalUnit(SignalUnitRack* rack): pRack(rack), bActive(false), Level(0.0f), bCalculating(false), uiDelayTrigger(0) { } |
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SignalUnit(const SignalUnit& Unit) { Copy(Unit); } |
SignalUnit(const SignalUnit& Unit): pRack(Unit.pRack) { Copy(Unit); } |
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void operator=(const SignalUnit& Unit) { Copy(Unit); } |
void operator=(const SignalUnit& Unit) { Copy(Unit); } |
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virtual void Copy(const SignalUnit& Unit) { |
void Copy(const SignalUnit& Unit) { |
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if (this == &Unit) return; |
if (this == &Unit) return; |
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bActive = Unit.bActive; |
bActive = Unit.bActive; |
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*/ |
*/ |
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virtual uint DelayTrigger() { return uiDelayTrigger; } |
virtual uint DelayTrigger() { return uiDelayTrigger; } |
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/** |
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* A helper method which checks whether the delay |
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* stage is finished. |
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*/ |
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bool DelayStage(); |
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protected: |
protected: |
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SignalUnitRack* const pRack; |
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bool bActive; /* Don't use it to check the active state of the unit!!! |
bool bActive; /* Don't use it to check the active state of the unit!!! |
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* Use Active() instead! */ |
* Use Active() instead! */ |
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float Level; |
float Level; |
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}; |
}; |
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class EndpointSignalUnit: virtual public SignalUnit { |
class EndpointSignalUnit: public SignalUnit { |
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public: |
public: |
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EndpointSignalUnit(SignalUnitRack* rack): SignalUnit(rack) { } |
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/** |
/** |
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* Gets the volume modulation value |
* Gets the volume modulation value |
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* for the current time step (sample point). |
* for the current time step (sample point). |
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*/ |
*/ |
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virtual float GetResonance() = 0; |
virtual float GetResonance() = 0; |
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virtual float CalculateFilterCutoff(float cutoff) = 0; |
/** Should return value in the range [-100, 100] (L <-> R) */ |
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virtual float GetPan() = 0; |
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virtual float CalculatePitch(float pitch) = 0; |
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virtual float CalculateResonance(float res) = 0; |
virtual float CalculateFilterCutoff(float cutoff) { |
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}; |
cutoff *= GetFilterCutoff(); |
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return cutoff > 13500 ? 13500 : cutoff; |
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class SignalUnitRack; |
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template <class O /* The signal unit's owner */> |
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class SignalUnitBase: virtual public SignalUnit { |
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public: |
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SignalUnitBase() : pOwner(NULL) { } |
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SignalUnitBase(const SignalUnitBase& Unit) { Copy(Unit); } |
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void operator=(const SignalUnitBase& Unit) { Copy(Unit); } |
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virtual void Copy(const SignalUnitBase& Unit) { |
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if (this == &Unit) return; |
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pOwner = Unit.pOwner; |
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SignalUnit::Copy(Unit); |
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} |
} |
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protected: |
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O* pOwner; // The owner to which this rack belongs. |
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SignalUnitRack* GetSignalUnitRack() { return pOwner->GetSignalUnitRack(); } |
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public: |
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virtual float CalculatePitch(float pitch) { |
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return GetPitch() * pitch; |
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} |
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/** |
virtual float CalculateResonance(float res) { |
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* The owner of the unit is set by the rack |
return GetResonance() * res; |
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* just before the call to the unit's trigger method. |
} |
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*/ |
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void SetOwner(O* Owner) { pOwner = Owner; } |
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/** |
/** Should return value in the range [0, 127] (L <-> R) */ |
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* A helper method which checks whether the delay |
virtual uint8_t CaluclatePan(uint8_t pan) { |
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* stage is finished. |
int p = pan + GetPan() * 0.63; |
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*/ |
if (p < 0) return 0; |
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bool DelayStage() { |
if (p > 127) return 127; |
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return (DelayTrigger() >= GetSignalUnitRack()->GetCurrentStep()); |
return p; |
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} |
} |
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}; |
}; |
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/** |
/** |
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* Continuous controller signal unit. |
* Continuous controller signal unit. |
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* The level of this unit corresponds to the controller changes |
* The level of this unit corresponds to the controllers changes |
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* and is normalized to be in the range from -1 to +1. |
* and their influences. |
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*/ |
*/ |
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template<class O> |
class CCSignalUnit: public SignalUnit { |
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class CCSignalUnit: public SignalUnitBase<O> { |
public: |
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private: |
/** Listener which will be notified when the level of the unit is changed. */ |
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uint8_t Ctrl; // The number of the MIDI controller which modulates this signal unit. |
class Listener { |
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public: |
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virtual void ValueChanged(CCSignalUnit* pUnit) = 0; |
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}; |
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protected: |
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class CC { |
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public: |
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uint8_t Controller; ///< MIDI controller number. |
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uint8_t Value; ///< Controller Value. |
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short int Curve; ///< specifies the curve type |
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float Influence; |
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CC(uint8_t Controller = 0, float Influence = 0.0f, short int Curve = -1) { |
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this->Controller = Controller; |
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this->Value = 0; |
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this->Curve = Curve; |
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this->Influence = Influence; |
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} |
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CC(const CC& cc) { Copy(cc); } |
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void operator=(const CC& cc) { Copy(cc); } |
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void Copy(const CC& cc) { |
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Controller = cc.Controller; |
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Value = cc.Value; |
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Influence = cc.Influence; |
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Curve = cc.Curve; |
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} |
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}; |
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FixedArray<CC> Ctrls; // The MIDI controllers which modulates this signal unit. |
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Listener* pListener; |
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public: |
public: |
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CCSignalUnit(uint8_t Controller) { |
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Ctrl = Controller; |
CCSignalUnit(SignalUnitRack* rack, Listener* l = NULL): SignalUnit(rack), Ctrls(128) { |
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pListener = l; |
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} |
} |
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CCSignalUnit(const CCSignalUnit& Unit) { Copy(Unit); } |
CCSignalUnit(const CCSignalUnit& Unit): SignalUnit(Unit.pRack), Ctrls(128) { Copy(Unit); } |
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void operator=(const CCSignalUnit& Unit) { Copy(Unit); } |
void operator=(const CCSignalUnit& Unit) { Copy(Unit); } |
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virtual void Copy(const CCSignalUnit& Unit) { |
void Copy(const CCSignalUnit& Unit) { |
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SignalUnitBase<O>::Copy(Unit); |
Ctrls.copy(Unit.Ctrls); |
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Ctrl = Unit.Ctrl; |
pListener = Unit.pListener; |
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SignalUnit::Copy(Unit); |
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} |
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void AddCC(uint8_t Controller, float Influence, short int Curve = -1) { |
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Ctrls.add(CC(Controller, Influence, Curve)); |
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} |
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void RemoveAllCCs() { |
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Ctrls.clear(); |
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} |
} |
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virtual void Increment() { } |
virtual void Increment() { } |
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virtual void Trigger() { |
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Calculate(); |
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bActive = Level != 0; |
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} |
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virtual void ProcessCCEvent(uint8_t Controller, uint8_t Value) { |
virtual void ProcessCCEvent(uint8_t Controller, uint8_t Value) { |
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if (Controller != Ctrl) return; |
bool recalculate = false; |
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// Normalize the value so it belongs to the interval [-1, +1] |
for (int i = 0; i < Ctrls.size(); i++) { |
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SignalUnitBase<O>::Level = 2 * Value; |
if (Controller != Ctrls[i].Controller) continue; |
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SignalUnitBase<O>::Level = SignalUnitBase<O>::Level/127.0f - 1.0f; |
if (Ctrls[i].Value == Value) continue; |
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Ctrls[i].Value = Value; |
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if (!bActive) bActive = true; |
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recalculate = true; |
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} |
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if (!SignalUnitBase<O>::bActive) SignalUnitBase<O>::bActive = true; |
if (recalculate) { |
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} |
Calculate(); |
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}; |
if (pListener!= NULL) pListener->ValueChanged(this); |
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} |
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/** |
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* Endpoint signal unit. |
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*/ |
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template<class O> |
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class EndpointSignalUnitBase : public SignalUnitBase<O>, public EndpointSignalUnit { |
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public: |
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virtual float CalculateFilterCutoff(float cutoff) { |
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cutoff *= GetFilterCutoff(); |
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return cutoff > 13500 ? 13500 : cutoff; |
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} |
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virtual float CalculatePitch(float pitch) { |
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return GetPitch() * pitch; |
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} |
} |
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virtual float CalculateResonance(float res) { |
virtual void Calculate() { |
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return GetResonance() * res; |
Level = 0; |
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for (int i = 0; i < Ctrls.size(); i++) { |
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if (Ctrls[i].Value == 0) continue; |
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Level += (Ctrls[i].Value / 127.0f) * Ctrls[i].Influence; |
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} |
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} |
} |
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}; |
}; |
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