Resampler.h

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#pragma once
#include "HephAudioShared.h"
#include "DoubleBufferedAudioEffect.h"
 
namespace HephAudio
{
    class HEPH_API Resampler : public DoubleBufferedAudioEffect
    {
    protected:
        size_t outputSampleRate;
 
    public:
        Resampler();
 
        explicit Resampler(size_t outputSampleRate);
 
        virtual ~Resampler() = default;
 
        virtual std::string Name() const override;
        virtual size_t CalculateRequiredFrameCount(size_t outputFrameCount, const AudioFormatInfo& formatInfo) const override;
        virtual size_t CalculateOutputFrameCount(size_t inputFrameCount, const AudioFormatInfo& formatInfo) const override;
        virtual size_t CalculateAdvanceSize(size_t renderFrameCount, const AudioFormatInfo& formatInfo) const override;
 
        virtual size_t GetOutputSampleRate() const;
 
        virtual void SetOutputSampleRate(size_t outputSampleRate);
 
    protected:
        virtual void ProcessST(const AudioBuffer& inputBuffer, AudioBuffer& outputBuffer, size_t startIndex, size_t frameCount) override;
        virtual AudioBuffer CreateOutputBuffer(const AudioBuffer& inputBuffer, size_t startIndex, size_t frameCount) const override;
        virtual void InitializeOutputBuffer(const AudioBuffer& inputBuffer, AudioBuffer& outputBuffer, size_t startIndex, size_t frameCount) const override;
    };
}