105 lines
3.4 KiB
C++
Executable File
105 lines
3.4 KiB
C++
Executable File
/*
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* Simple Compressor (header)
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*
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* File : SimpleComp.h
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* Library : SimpleSource
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* Version : 1.12
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* Class : SimpleComp, SimpleCompRms
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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 __SIMPLE_COMP_H__
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#define __SIMPLE_COMP_H__
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#include "SimpleHeader.h" // common header
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#include "SimpleEnvelope.h" // for base class
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#include "SimpleGain.h" // for gain functions
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namespace chunkware_simple
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{
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//-------------------------------------------------------------
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// simple compressor
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//-------------------------------------------------------------
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class SimpleComp : public AttRelEnvelope
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{
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public:
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SimpleComp();
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virtual ~SimpleComp() {}
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// parameters
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virtual void setThresh( double dB );
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virtual void setRatio( double dB );
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virtual double getThresh( void ) const { return threshdB_; }
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virtual double getRatio( void ) const { return ratio_; }
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// runtime
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virtual void initRuntime( void ); // call before runtime (in resume())
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void process( double &in1, double &in2 ); // compressor runtime process
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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 ratio_; // ratio (compression: < 1 ; expansion: > 1)
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// runtime variables
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double envdB_; // over-threshold envelope (dB)
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}; // end SimpleComp class
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//-------------------------------------------------------------
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// simple compressor with RMS detection
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//-------------------------------------------------------------
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class SimpleCompRms : public SimpleComp
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{
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public:
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SimpleCompRms();
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virtual ~SimpleCompRms() {}
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// sample rate
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virtual void setSampleRate( double sampleRate );
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// RMS window
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virtual void setWindow( double ms );
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virtual double getWindow( void ) const { return ave_.getTc(); }
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// runtime process
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virtual void initRuntime( void ); // call before runtime (in resume())
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void process( double &in1, double &in2 ); // compressor runtime process
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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 SimpleCompRms class
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} // end namespace chunkware_simple
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// include inlined process function
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#include "SimpleCompProcess.inl"
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#endif // end __SIMPLE_COMP_H__
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