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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef IIRDSPKernel_h
#define IIRDSPKernel_h
#include "modules/webaudio/IIRProcessor.h"
#include "platform/audio/AudioDSPKernel.h"
#include "platform/audio/IIRFilter.h"
namespace blink {
class IIRProcessor;
class IIRDSPKernel final : public AudioDSPKernel {
public:
explicit IIRDSPKernel(IIRProcessor* processor)
: AudioDSPKernel(processor)
, m_iir(processor->feedforward(), processor->feedback())
{
}
// AudioDSPKernel
void process(const float* source, float* dest, size_t framesToProcess) override;
void reset() override { m_iir.reset(); }
// Get the magnitude and phase response of the filter at the given
// set of frequencies (in Hz). The phase response is in radians.
void getFrequencyResponse(int nFrequencies, const float* frequencyHz, float* magResponse, float* phaseResponse);
double tailTime() const override;
double latencyTime() const override;
protected:
IIRFilter m_iir;
};
} // namespace blink
#endif // IIRDSPKernel_h
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