74 lines
3.0 KiB
C++
74 lines
3.0 KiB
C++
/*
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* Copyright (C) 2010, Google Inc. 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 "AudioNode.h"
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#include "ConvolverOptions.h"
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#include <wtf/Lock.h>
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namespace WebCore {
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class AudioBuffer;
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class Reverb;
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class ConvolverNode final : public AudioNode {
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WTF_MAKE_ISO_ALLOCATED(ConvolverNode);
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public:
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static ExceptionOr<Ref<ConvolverNode>> create(BaseAudioContext&, ConvolverOptions&& = { });
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virtual ~ConvolverNode();
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ExceptionOr<void> setBufferForBindings(RefPtr<AudioBuffer>&&);
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AudioBuffer* bufferForBindings(); // Only safe to call on the main thread.
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bool normalizeForBindings() const WTF_IGNORES_THREAD_SAFETY_ANALYSIS { ASSERT(isMainThread()); return m_normalize; }
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void setNormalizeForBindings(bool);
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ExceptionOr<void> setChannelCount(unsigned) final;
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ExceptionOr<void> setChannelCountMode(ChannelCountMode) final;
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private:
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explicit ConvolverNode(BaseAudioContext&);
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double tailTime() const final;
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double latencyTime() const final;
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bool requiresTailProcessing() const final;
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void process(size_t framesToProcess) final;
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void checkNumberOfChannelsForInput(AudioNodeInput*) final;
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std::unique_ptr<Reverb> m_reverb WTF_GUARDED_BY_LOCK(m_processLock); // Only modified on the main thread but accessed on the audio thread.
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RefPtr<AudioBuffer> m_buffer WTF_GUARDED_BY_LOCK(m_processLock); // Only modified on the main thread but accessed on the audio thread.
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// This synchronizes dynamic changes to the convolution impulse response with process().
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mutable Lock m_processLock;
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// Normalize the impulse response or not.
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bool m_normalize { true }; // Only used on the main thread.
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};
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} // namespace WebCore
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