/* * Copyright (C) 2011, Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #if ENABLE(WEB_AUDIO) #include "BiquadFilterNode.h" namespace WebCore { BiquadFilterNode::BiquadFilterNode(AudioContext& context, float sampleRate) : AudioBasicProcessorNode(context, sampleRate) { // Initially setup as lowpass filter. m_processor = std::make_unique<BiquadProcessor>(context, sampleRate, 1, false); setNodeType(NodeTypeBiquadFilter); } BiquadFilterType BiquadFilterNode::type() const { return const_cast<BiquadFilterNode*>(this)->biquadProcessor()->type(); } void BiquadFilterNode::setType(BiquadFilterType type) { biquadProcessor()->setType(type); } void BiquadFilterNode::getFrequencyResponse(const RefPtr<Float32Array>& frequencyHz, const RefPtr<Float32Array>& magResponse, const RefPtr<Float32Array>& phaseResponse) { if (!frequencyHz || !magResponse || !phaseResponse) return; int n = std::min(frequencyHz->length(), std::min(magResponse->length(), phaseResponse->length())); if (n) biquadProcessor()->getFrequencyResponse(n, frequencyHz->data(), magResponse->data(), phaseResponse->data()); } } // namespace WebCore #endif // ENABLE(WEB_AUDIO)