50 lines
2.2 KiB
C++
50 lines
2.2 KiB
C++
/*
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* Copyright 2016 The Chromium Authors. All rights reserved.
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* Copyright (C) 2020, Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "AudioBasicProcessorNode.h"
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#include "IIRFilterOptions.h"
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#include "IIRProcessor.h"
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#include <JavaScriptCore/Float32Array.h>
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#include <wtf/IsoMalloc.h>
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namespace WebCore {
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class IIRFilterNode final : public AudioBasicProcessorNode {
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WTF_MAKE_ISO_ALLOCATED(IIRFilterNode);
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public:
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static ExceptionOr<Ref<IIRFilterNode>> create(ScriptExecutionContext&, BaseAudioContext&, IIRFilterOptions&&);
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ExceptionOr<void> getFrequencyResponse(Float32Array& frequencyHz, Float32Array& magResponse, Float32Array& phaseResponse);
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private:
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IIRFilterNode(BaseAudioContext&, const Vector<double>& feedforward, const Vector<double>& feedback, bool isFilterStable);
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IIRProcessor* iirProcessor() { return static_cast<IIRProcessor*>(processor()); }
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};
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} // namespace WebCore
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