#pragma once
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#include <DynamicsProcessor.h>
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#include <GainUtilities.h>
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/**
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* Basic Compressor Effect
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*/
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template <typename SampleType>
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class Compressor : public DynamicsProcessor<SampleType>
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{
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public:
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/**
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* @brief Constructor
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*/
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Compressor();
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/**
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* @brief Destructor
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*/
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~Compressor();
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/**
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* @brief Prepares object for playback
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*
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* @param sampleRate Current sampling rate
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*/
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void prepare(SampleType sampleRate) override;
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/**
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* @brief Processes a single sample
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*
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* @param input Input sample
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*/
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SampleType processSample(SampleType input) override;
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/**
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* @brief Processes a memory block that holds audio samples
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*
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* @param data Memory block start pointer
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* @param startSample Sample index to start processing from
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* @param endSample Number of samples to process
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*/
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void process(SampleType* data, int startSample, int endSample) override;
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/**
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* @brief Sets the compressor threshold
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*
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* @param newThreshold New threshold value in decibels
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*/
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void setThreshold(SampleType newThreshold) override;
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/**
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* @brief Sets the compression ratio
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*
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* @param newRatio New ratio value
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*/
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void setRatio(SampleType newRatio);
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/**
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* @brief Sets the compressor attack time
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*
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* @param newAttack New attack time value in milliseconds
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*/
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void setAttack(SampleType newAttack) override;
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/**
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* @brief Sets the compressor release time
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*
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* @param newRelease New release time value in milliseconds
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*/
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void setRelease(SampleType newRelease) override;
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/**
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* @brief Sets the compressor make-up gain
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*
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* @param newGain New gain value in decibels
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*/
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void setGain(SampleType newGain) override;
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/**
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* @brief Sets one of the compressor's parameters
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*
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* @param index Parameter index
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* @param newValue New parameter value
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*/
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void setParameter(int index, SampleType newValue);
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/**
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* @brief Returns one of the compressor's parameters
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*
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* @param index Parameter index
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*/
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SampleType getParameter(int index);
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/**
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* @brief Sets the compressor knee type
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*
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* @param index Knee type index
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*/
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void setKneeType(int index);
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/**
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* @brief Returns the compressor knee type index
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*/
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int getKneeType();
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enum Parameters
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{
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Threshold = 0, //-80 | 0 dB
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Ratio, //
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Attack, //1ms | 100ms
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Release, //10ms | 1000ms
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MakeupGain
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};
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enum KneeTypes
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{
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Soft = 0,
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Hard
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};
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private:
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SampleType sampleRate;
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// User Parameters
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SampleType threshold{ -10.0 }; //in dB
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SampleType ratio{ 50.0 };
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SampleType makeupGain{ 0.0 }; //in dB
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SampleType attack{ 10.0 }; //in ms
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SampleType release{ 100.0 }; //in ms
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int kneeType{ KneeTypes::Soft };
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//=============================================
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SampleType kneeWidth{ 30.0 }; //in dB
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//============================================
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SampleType calaculateGain(SampleType input);
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};
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