FIRFilter.h

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* libscopeprotocols                                                                                                    *
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#ifndef FIRFilter_h
#define FIRFilter_h
 
struct FIRFilterArgs
{
    uint32_t end;
    uint32_t filterlen;
};
 
class FIRFilter : public Filter
{
public:
    FIRFilter(const std::string& color);
 
    virtual void Refresh(vk::raii::CommandBuffer& cmdBuf, std::shared_ptr<QueueHandle> queue) override;
    virtual DataLocation GetInputLocation() override;
 
    static std::string GetProtocolName();
    virtual void SetDefaultName() override;
 
    virtual bool ValidateChannel(size_t i, StreamDescriptor stream) override;
 
    PROTOCOL_DECODER_INITPROC(FIRFilter)
 
    void DoFilterKernel(
        vk::raii::CommandBuffer& cmdBuf,
        std::shared_ptr<QueueHandle> queue,
        UniformAnalogWaveform* din,
        UniformAnalogWaveform* cap);
 
    enum FilterType
    {
        FILTER_TYPE_LOWPASS,
        FILTER_TYPE_HIGHPASS,
        FILTER_TYPE_BANDPASS,
        FILTER_TYPE_NOTCH
    };
 
    FilterType GetFilterType()
    { return static_cast<FilterType>(m_parameters[m_filterTypeName].GetIntVal()); }
 
    void SetFilterType(FilterType type)
    { m_parameters[m_filterTypeName].SetIntVal(type); }
 
    void SetFreqLow(float freq)
    { m_parameters[m_freqLowName].SetFloatVal(freq); }
 
    void SetFreqHigh(float freq)
    { m_parameters[m_freqHighName].SetFloatVal(freq); }
 
protected:
 
    void CalculateFilterCoefficients(float fa, float fb, float stopbandAtten, FilterType type);
 
    static float Bessel(float x);
 
    void DoFilterKernelGeneric(
        UniformAnalogWaveform* din,
        UniformAnalogWaveform* cap);
 
#ifdef __x86_64__
    void DoFilterKernelAVX2(
        UniformAnalogWaveform* din,
        UniformAnalogWaveform* cap);
 
    void DoFilterKernelAVX512F(
        UniformAnalogWaveform* din,
        UniformAnalogWaveform* cap);
#endif
 
    std::string m_filterTypeName;
    std::string m_filterLengthName;
    std::string m_stopbandAttenName;
    std::string m_freqLowName;
    std::string m_freqHighName;
 
    ComputePipeline m_computePipeline;
 
    AcceleratorBuffer<float> m_coefficients;
};
 
#endif