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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_AUDIO_WORKLET_NODE_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_AUDIO_WORKLET_NODE_H_
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_audio_worklet_node_options.h"
#include "third_party/blink/renderer/modules/webaudio/audio_node.h"
#include "third_party/blink/renderer/modules/webaudio/audio_param_map.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet_handler.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet_processor_error_state.h"
#include "third_party/blink/renderer/platform/wtf/threading.h"
namespace blink {
class AudioNodeInput;
class AudioWorkletProcessor;
class BaseAudioContext;
class CrossThreadAudioParamInfo;
class ExceptionState;
class MessagePort;
class ScriptState;
// AudioWorkletNode is a user-facing interface of custom audio processor in
// Web Audio API. The integration of WebAudio renderer is done via
// AudioWorkletHandler and the actual audio processing runs on
// AudioWorkletProcess.
//
// [Main Scope] | [AudioWorkletGlobalScope]
// AudioWorkletNode <-> AudioWorkletHandler <==|==> AudioWorkletProcessor
// (JS interface) (Renderer access) | (V8 audio processing)
class AudioWorkletNode final : public AudioNode,
public ActiveScriptWrappable<AudioWorkletNode> {
DEFINE_WRAPPERTYPEINFO();
public:
static AudioWorkletNode* Create(ScriptState*,
BaseAudioContext*,
const String& name,
const AudioWorkletNodeOptions*,
ExceptionState&);
AudioWorkletNode(BaseAudioContext&,
const String& name,
const AudioWorkletNodeOptions*,
const Vector<CrossThreadAudioParamInfo>,
MessagePort* node_port);
// ActiveScriptWrappable
bool HasPendingActivity() const final;
// IDL
AudioParamMap* parameters() const;
MessagePort* port() const;
DEFINE_ATTRIBUTE_EVENT_LISTENER(processorerror, kError)
void FireProcessorError(AudioWorkletProcessorErrorState);
void Trace(Visitor*) const override;
// InspectorHelperMixin
void ReportDidCreate() final;
void ReportWillBeDestroyed() final;
private:
scoped_refptr<AudioWorkletHandler> GetWorkletHandler() const;
Member<AudioParamMap> parameter_map_;
Member<MessagePort> node_port_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_AUDIO_WORKLET_NODE_H_
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