AudioEffectCompressor.h

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//
// Created by Rishikesh Daoo on 2/24/20.
// Copyright © 2020 Rishikesh Daoo. All rights reserved.
//
 
#ifndef AUDIOFXFRAMEWORK_AUDIOEFFECTCOMPRESSOREXPANDER_H
#define AUDIOFXFRAMEWORK_AUDIOEFFECTCOMPRESSOREXPANDER_H
 
#include <AudioEffect.h>
#include "RingBuffer.h"
 
class CAudioEffectCompressorExpander: public CAudioEffect
{
public:
 
    enum EffectSubtype_t
    {
        kNone = 0,  
        kCompressor = 1,  
        kExpander = 2  
    };
 
    CAudioEffectCompressorExpander();
    CAudioEffectCompressorExpander(Effect_t effectType, float fSampleRateInHz, int iNumChannels, EffectSubtype_t subType = kCompressor, int iLookaheadBufferSize = 150, EffectParam_t params[] = NULL, float values[] = NULL, int iNumParams = 0);
    ~CAudioEffectCompressorExpander();
 
    Error_t init(Effect_t effectType, float fSampleRateInHz, int iNumChannels, EffectSubtype_t subType = kCompressor, int iLookaheadBufferSize = 150, EffectParam_t params[] = NULL, float values[] = NULL, int iNumParams = 0);
 
    Error_t reset();
 
    Error_t setParam(EffectParam_t eParam, float fValue);
    
    float getParam(EffectParam_t eParam);
 
    Error_t setEffectSubtype(EffectSubtype_t eValue);
    
    EffectSubtype_t getEffectSubtype();
 
    Error_t process(float **ppfInputBuffer, float **ppfOutputBuffer, int iNumberOfFrames);
 
private:
 
    EffectSubtype_t m_eCompressorType;  
 
    int m_iLookaheadBufferSize;  
 
    float m_fAveragingTime;  
    float m_fAttackTime;  
    float m_fReleaseTime;  
 
    float m_fThreshold;  
    float m_fSlope;  
 
    float* m_pfRmsSignal;  
    float* m_pf_gain;  
 
    CRingBuffer<float> **m_ppfDelayBuffer;  
};
 
#endif //AUDIOFXFRAMEWORK_AUDIOEFFECTCOMPRESSOREXPANDER_H