ConvolutionReverb.h

Go to the documentation of this file.

namespace krotos
{
    //==============================================================================
    class ConvolutionReverb
    {
      public:
        ConvolutionReverb();
        ~ConvolutionReverb();
 
        void prepareToPlay(double sampleRate, int samplesPerBlock);
        void prepareNextBlock(const float* const* buffer, int numSamples, int numChannels);
        float getNextSample(int sampleIdx, int channelIdx);
        void processBlock(AudioBuffer<float>& buffer);
 
        double getSampleRate() const;
        void setSampleRate(double newSampleRate);
 
        void setMix(float mixValue);
        void setOutputGainDb(float outputGainValueIndB);
        void setPredelayMs(float predelayMs);
 
        const OwnedArray<IRConvolver>& getConvolvers() const;
        void updateConvolvers();
        void clearConvolvers();
        size_t getConvolverTailBlockSize() const;
        size_t getConvolverHeadBlockSize() const;
        void setImpulseResponseFilePath(const String& impulseResponseFilePath);
        String getImpulseResponseFilePath() const;
 
        void reset();
 
      private:
        OwnedArray<IRConvolver> m_convolvers;
        String m_impulseResponseFilePath{""};
 
        enum Channel
        {
            LEFT = 0,
            RIGHT
        };
        const int m_numOutputChannels{2};
 
        double m_sampleRate{0.0};
        DryWet m_mix{1.0f};
        float m_outputGain{1.0f};
        float m_predelay{0.0f};
 
        const float m_maxPredelayMs{600.0f};
        OwnedArray<AudioSampleCircularBuffer> m_predelayBuffers;
 
        AudioBuffer<float> m_wetBuffer, m_dryBuffer;
 
        std::vector<float> m_convolutionBufferLL;
        std::vector<float> m_convolutionBufferLR;
        std::vector<float> m_convolutionBufferRL;
        std::vector<float> m_convolutionBufferRR;
 
        mutable CriticalSection m_convolverMutex;
        size_t m_convolverHeadBlockSize{0};
        size_t m_convolverTailBlockSize{0};
 
        mutable CriticalSection m_irCalculationMutex;
        std::unique_ptr<Thread> m_irCalculation;
 
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(ConvolutionReverb)
    };
} // namespace krotos