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/*
* Copyright (C) 2010, Google Inc. All rights reserved.
* Copyright (C) 2020, Apple 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.
*/
#pragma once
#include "AudioNode.h"
#include "ConvolverOptions.h"
#include <wtf/Lock.h>
namespace WebCore {
class AudioBuffer;
class Reverb;
class ConvolverNode final : public AudioNode {
WTF_MAKE_ISO_ALLOCATED(ConvolverNode);
public:
static ExceptionOr<Ref<ConvolverNode>> create(BaseAudioContext&, ConvolverOptions&& = { });
virtual ~ConvolverNode();
ExceptionOr<void> setBufferForBindings(RefPtr<AudioBuffer>&&);
AudioBuffer* bufferForBindings(); // Only safe to call on the main thread.
bool normalizeForBindings() const WTF_IGNORES_THREAD_SAFETY_ANALYSIS { ASSERT(isMainThread()); return m_normalize; }
void setNormalizeForBindings(bool);
ExceptionOr<void> setChannelCount(unsigned) final;
ExceptionOr<void> setChannelCountMode(ChannelCountMode) final;
private:
explicit ConvolverNode(BaseAudioContext&);
double tailTime() const final;
double latencyTime() const final;
bool requiresTailProcessing() const final;
void process(size_t framesToProcess) final;
void checkNumberOfChannelsForInput(AudioNodeInput*) final;
std::unique_ptr<Reverb> m_reverb WTF_GUARDED_BY_LOCK(m_processLock); // Only modified on the main thread but accessed on the audio thread.
RefPtr<AudioBuffer> m_buffer WTF_GUARDED_BY_LOCK(m_processLock); // Only modified on the main thread but accessed on the audio thread.
// This synchronizes dynamic changes to the convolution impulse response with process().
mutable Lock m_processLock;
// Normalize the impulse response or not.
bool m_normalize { true }; // Only used on the main thread.
};
} // namespace WebCore
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