Spatializer.h

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#pragma once
#include "HephAudioShared.h"
#include "FrequencyDomainEffect.h"
#include "Buffers/ComplexBuffer.h"
#include <filesystem>
#include <mysofa.h>
#include <array>
 
#define HEPHAUDIO_SPATIALIZER_AZIMUTH_MIN (0)
 
#define HEPHAUDIO_SPATIALIZER_AZIMUTH_MAX (360)
 
#define HEPHAUDIO_SPATIALIZER_ELEVATION_MIN (-90)
 
#define HEPHAUDIO_SPATIALIZER_ELEVATION_MAX (90)
 
namespace HephAudio
{
    class HEPH_API Spatializer : public FrequencyDomainEffect
    {
    public:
        using FrequencyDomainEffect::Process;
 
    protected:
        float azimuth;
 
        float elevation;
 
        std::filesystem::path filePath;
 
        MYSOFA_EASY* pEasy;
 
        size_t hrtfSize;
 
        uint32_t hrtfSampleRate;
 
        bool updateTransferFunctions;
 
        std::array<Heph::ComplexBuffer, 2> transferFunctions;
 
    public:
        Spatializer();
 
        Spatializer(size_t hopSize, const Window& wnd);
 
        Spatializer(float azimuth, float elevation, size_t hopSize, const Window& wnd);
 
        Spatializer(const std::filesystem::path& filePath, uint32_t sampleRate, float azimuth, float elevation, size_t hopSize, const Window& wnd);
 
        virtual ~Spatializer();
 
        virtual std::string Name() const override;
        virtual void Process(AudioBuffer& buffer, size_t startIndex, size_t frameCount) override;
        virtual void SetWindow(const Window& wnd) override;
 
        virtual void OpenSofaFile(const std::filesystem::path& filePath);
 
        virtual void CloseSofaFile();
 
        virtual float GetAzimuth() const;
 
        virtual void SetAzimuth(float azimuth);
 
        virtual float GetElevation() const;
 
        virtual void SetElevation(float elevation);
 
        virtual uint32_t GetSampleRate() const;
 
        virtual void SetSampleRate(uint32_t sampleRate);
 
        virtual size_t GetHrtfSize() const;
 
    protected:
        virtual void ProcessST(const AudioBuffer& inputBuffer, AudioBuffer& outputBuffer, size_t startIndex, size_t frameCount) override;
 
        virtual void OpenDefaultFile();
 
        virtual std::string GetErrorString(int errorCode) const;
    };
}