Implement AudioWorkletProcessor interface

third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.h

+// 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 AudioWorkletProcessor_h
+#define AudioWorkletProcessor_h
+
+#include "bindings/core/v8/ScopedPersistent.h"
+#include "platform/heap/Handle.h"
+#include "v8/include/v8.h"
+
+namespace blink {
+
+class AudioBuffer;
+class AudioWorkletGlobalScope;
+class AudioWorkletProcessorDefinition;
+
+// AudioWorkletProcessor class represents the active instance created from
+// AudioWorkletProcessorDefinition. |AudioWorkletNodeHandler| invokes
+// process() method in this object upon graph rendering.
+class AudioWorkletProcessor
+    : public GarbageCollectedFinalized<AudioWorkletProcessor> {
+ public:
+  static AudioWorkletProcessor* create(const String& name,
+                                       AudioWorkletGlobalScope*);
+  virtual ~AudioWorkletProcessor();
+
+  // TODO: AudioWorkletHandler must serve
+  //  - inputs: sequence<AudioBuffer>
+  //  - outputs: sequence<AudioBuffer>
+  //  - parameters: Object
+  bool process(AudioBuffer* inputBuffer, AudioBuffer* outputBuffer);
+
+  // TODO:
+  // Implement event handler and messaging features.
+
+  DECLARE_TRACE();
+
+ private:
+  AudioWorkletProcessor(AudioWorkletProcessorDefinition*);

[haraken, 2017/03/06 11:51:12]

Add explicit.

[hongchan, 2017/03/06 20:06:12]

Done.

+
+  Member<AudioWorkletProcessorDefinition> m_definition;
+  v8::Local<v8::Object> m_instance;

[haraken, 2017/03/06 11:51:12]

You should not use v8::Local on a heap-allocated object. v8::Local is only for
on-stack objects.

You'll need to use ScopedPersistent.

[hongchan, 2017/03/06 20:06:12]

Done.

+};
+
+}  // namespace blink
+
+#endif  // AudioWorkletProcessor_h