59 lines
2.5 KiB
C++
59 lines
2.5 KiB
C++
/*
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* Copyright (C) 2011, Google 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 "BiquadFilterOptions.h"
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#include "BiquadProcessor.h"
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namespace WebCore {
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class AudioParam;
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class BiquadFilterNode final : public AudioBasicProcessorNode {
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WTF_MAKE_ISO_ALLOCATED(BiquadFilterNode);
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public:
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static ExceptionOr<Ref<BiquadFilterNode>> create(BaseAudioContext& context, const BiquadFilterOptions& = { });
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BiquadFilterType type() const;
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void setType(BiquadFilterType);
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AudioParam& frequency() { return biquadProcessor()->parameter1(); }
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AudioParam& q() { return biquadProcessor()->parameter2(); }
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AudioParam& gain() { return biquadProcessor()->parameter3(); }
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AudioParam& detune() { return biquadProcessor()->parameter4(); }
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// Get the magnitude and phase response of the filter at the given
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// set of frequencies (in Hz). The phase response is in radians.
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ExceptionOr<void> getFrequencyResponse(const Ref<Float32Array>& frequencyHz, const Ref<Float32Array>& magResponse, const Ref<Float32Array>& phaseResponse);
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private:
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explicit BiquadFilterNode(BaseAudioContext&);
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BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(processor()); }
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};
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} // namespace WebCore
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