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113 lines
3.4 KiB
C++
113 lines
3.4 KiB
C++
/*
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* Simple Gate (header)
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*
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* File : SimpleGate.h
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* Library : SimpleSource
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* Version : 1.12
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* Class : SimpleGate, SimpleGateRms
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*
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* 2006, ChunkWare Music Software, OPEN-SOURCE
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef chunkware__SIMPLE_GATE_H
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#define chunkware__SIMPLE_GATE_H
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#include "chunkware_dsp/SimpleEnvelope.h"
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#include "chunkware_dsp/SimpleGain.h" // for gain functions
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#include "chunkware_dsp/SimpleHeader.h" // common header
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namespace chunkware_simple
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{
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//! simple gate
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class SimpleGate : public AttRelEnvelope
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{
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public:
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//! Constructor
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SimpleGate();
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//! Destructor
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virtual ~SimpleGate() {}
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//! set threshold
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virtual void setThresh(double dB);
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//! get threshold
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virtual double getThresh(void) const { return threshdB_; }
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//! Init runtime
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//! \remark call before runtime (in resume())
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virtual void initRuntime(void);
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//! Process audio
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//! \remark gate runtime process
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void process(double &in1, double &in2);
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//! Process audio stereo-linked
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void process(double &in1, double &in2, double keyLinked); // with stereo-linked key in
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private:
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// transfer function
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double threshdB_; //!< threshold (dB)
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double thresh_; //!< threshold (linear)
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// runtime variables
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double env_; //!< over-threshold envelope (linear)
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};
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//! Simple gate with RMS detection
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class SimpleGateRms : public SimpleGate
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{
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public:
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//! Constructor
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SimpleGateRms();
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//! Destructor
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virtual ~SimpleGateRms() override {}
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//! set sample rate
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virtual void setSampleRate(double sampleRate) override;
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//! set RMS window
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virtual void setWindow(double ms);
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//! get RMS window
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virtual double getWindow(void) const { return ave_.getTc(); }
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//! call before runtime (in resume())
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virtual void initRuntime(void) override;
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//! gate runtime process
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void process(double &in1, double &in2);
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private:
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EnvelopeDetector ave_; //!< averager
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double aveOfSqrs_; //!< average of squares
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}; // end SimpleGateRms class
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} // end namespace chunkware_simple
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// include inlined process function
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#include "SimpleGateProcess.inl"
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#endif // end __SIMPLE_GATE_H__
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