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/*
* 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.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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
#if ENABLE(WEB_AUDIO)
#include "ActiveDOMObject.h"
#include "AudioNode.h"
#include <wtf/Lock.h>
#include <wtf/RobinHoodHashMap.h>
namespace JSC {
class JSGlobalObject;
} // namespace JSC
namespace WebCore {
class AudioParamMap;
class AudioWorkletProcessor;
class MessagePort;
struct AudioParamDescriptor;
struct AudioWorkletNodeOptions;
template<typename> class AudioArray;
typedef AudioArray<float> AudioFloatArray;
class AudioWorkletNode : public AudioNode, public ActiveDOMObject {
WTF_MAKE_ISO_ALLOCATED(AudioWorkletNode);
public:
static ExceptionOr<Ref<AudioWorkletNode>> create(JSC::JSGlobalObject&, BaseAudioContext&, String&& name, AudioWorkletNodeOptions&&);
~AudioWorkletNode();
AudioParamMap& parameters() { return m_parameters.get(); }
MessagePort& port() { return m_port.get(); }
void setProcessor(RefPtr<AudioWorkletProcessor>&&);
void initializeAudioParameters(const Vector<AudioParamDescriptor>&, const std::optional<Vector<KeyValuePair<String, double>>>& paramValues);
private:
AudioWorkletNode(BaseAudioContext&, const String& name, AudioWorkletNodeOptions&&, Ref<MessagePort>&&);
enum class ProcessorError { ConstructorError, ProcessError };
void fireProcessorErrorOnMainThread(ProcessorError);
void didFinishProcessingOnRenderingThread(bool threwException);
// AudioNode.
void process(size_t framesToProcess) final;
double tailTime() const final { return m_tailTime; }
double latencyTime() const final { return 0; }
bool requiresTailProcessing() const final { return true; }
void checkNumberOfChannelsForInput(AudioNodeInput*) final;
void updatePullStatus() final;
// ActiveDOMObject.
const char* activeDOMObjectName() const final;
bool virtualHasPendingActivity() const final;
String m_name;
Ref<AudioParamMap> m_parameters;
Ref<MessagePort> m_port;
Lock m_processLock;
RefPtr<AudioWorkletProcessor> m_processor; // Should only be used on the rendering thread.
MemoryCompactLookupOnlyRobinHoodHashMap<String, std::unique_ptr<AudioFloatArray>> m_paramValuesMap;
Thread* m_workletThread { nullptr };
// Keeps the reference of AudioBus objects from AudioNodeInput and AudioNodeOutput in order
// to pass them to AudioWorkletProcessor.
Vector<RefPtr<AudioBus>> m_inputs;
Vector<Ref<AudioBus>> m_outputs;
double m_tailTime { std::numeric_limits<double>::infinity() };
bool m_wasOutputChannelCountGiven { false };
};
} // namespace WebCore
#endif // ENABLE(WEB_AUDIO)
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