| /* |
| * 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" |
| #include <wtf/IsoMallocInlines.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(BiquadFilterNode); |
| |
| ExceptionOr<Ref<BiquadFilterNode>> BiquadFilterNode::create(BaseAudioContext& context, const BiquadFilterOptions& options) |
| { |
| auto node = adoptRef(*new BiquadFilterNode(context)); |
| |
| auto result = node->handleAudioNodeOptions(options, { 2, ChannelCountMode::Max, ChannelInterpretation::Speakers }); |
| if (result.hasException()) |
| return result.releaseException(); |
| |
| node->setType(options.type); |
| node->q().setValue(options.Q); |
| node->detune().setValue(options.detune); |
| node->frequency().setValue(options.frequency); |
| node->gain().setValue(options.gain); |
| |
| return node; |
| } |
| |
| BiquadFilterNode::BiquadFilterNode(BaseAudioContext& context) |
| : AudioBasicProcessorNode(context, NodeTypeBiquadFilter) |
| { |
| // Initially setup as lowpass filter. |
| m_processor = makeUnique<BiquadProcessor>(context, context.sampleRate(), 1, false); |
| |
| // Initialize so that AudioParams can be processed. |
| initialize(); |
| } |
| |
| BiquadFilterType BiquadFilterNode::type() const |
| { |
| return const_cast<BiquadFilterNode*>(this)->biquadProcessor()->type(); |
| } |
| |
| void BiquadFilterNode::setType(BiquadFilterType type) |
| { |
| biquadProcessor()->setType(type); |
| } |
| |
| ExceptionOr<void> BiquadFilterNode::getFrequencyResponse(const Ref<Float32Array>& frequencyHz, const Ref<Float32Array>& magResponse, const Ref<Float32Array>& phaseResponse) |
| { |
| unsigned length = frequencyHz->length(); |
| if (magResponse->length() != length || phaseResponse->length() != length) |
| return Exception { InvalidAccessError, "The arrays passed as arguments must have the same length"_s }; |
| |
| if (length) |
| biquadProcessor()->getFrequencyResponse(length, frequencyHz->data(), magResponse->data(), phaseResponse->data()); |
| return { }; |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(WEB_AUDIO) |