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// Copyright 2017 The Chromium Authors. All rights reserved.
// 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_PROCESSOR_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_AUDIO_WORKLET_PROCESSOR_H_
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet_processor_error_state.h"
#include "third_party/blink/renderer/platform/audio/audio_array.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/bindings/trace_wrapper_v8_reference.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "v8/include/v8.h"
namespace blink {
class AudioBus;
class AudioWorkletGlobalScope;
class AudioWorkletProcessorDefinition;
class MessagePort;
class ExecutionContext;
// AudioWorkletProcessor class represents the active instance created from
// AudioWorkletProcessorDefinition. |AudioWorkletNodeHandler| invokes
// process() method in this object upon graph rendering.
//
// This is constructed and destroyed on a worker thread, and all methods also
// must be called on the worker thread.
class MODULES_EXPORT AudioWorkletProcessor : public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
public:
// This static factory should be called after an instance of
// |AudioWorkletNode| gets created by user-supplied JS code in the main
// thread. This factory must not be called by user in
// |AudioWorkletGlobalScope|.
static AudioWorkletProcessor* Create(ExecutionContext*);
AudioWorkletProcessor(AudioWorkletGlobalScope*,
const String& name,
MessagePort*);
~AudioWorkletProcessor() override = default;
// |AudioWorkletHandler| invokes this method to process audio.
bool Process(
Vector<scoped_refptr<AudioBus>>* input_buses,
Vector<AudioBus*>* output_buses,
HashMap<String, std::unique_ptr<AudioFloatArray>>* param_value_map);
const String& Name() const { return name_; }
void SetErrorState(AudioWorkletProcessorErrorState);
AudioWorkletProcessorErrorState GetErrorState() const;
bool hasErrorOccured() const;
// IDL
MessagePort* port() const;
void Trace(Visitor*) override;
private:
Member<AudioWorkletGlobalScope> global_scope_;
Member<MessagePort> processor_port_;
const String name_;
AudioWorkletProcessorErrorState error_state_ =
AudioWorkletProcessorErrorState::kNoError;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_AUDIO_WORKLET_PROCESSOR_H_
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