Implement AudioWorkletProcessor interface

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

Index: third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.cpp b/third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..b6fccfa390bc4535a7d88ec14d86cc740607f56d
--- /dev/null
+++ b/third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.cpp
@@ -0,0 +1,50 @@
+// 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.
+
+#include "modules/webaudio/AudioWorkletProcessor.h"
+
+#include "modules/webaudio/AudioWorkletGlobalScope.h"
+
+namespace blink {
+
+// This static factory should be called implicitly when 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|.
+AudioWorkletProcessor* AudioWorkletProcessor::create(
+    AudioWorkletGlobalScope* globalScope,
+    const String& name) {
+  DCHECK(!isMainThread());

[nhiroki, 2017/03/16 00:21:35]

Can we replace DCHECK(!isMainThread) with DCHECK(globalScope->isContextThread())
here and elsewhere in this class?

[hongchan, 2017/03/16 22:11:28]

Done.

+  return new AudioWorkletProcessor(globalScope, name);
+}
+
+AudioWorkletProcessor::AudioWorkletProcessor(
+    AudioWorkletGlobalScope* globalScope,
+    const String& name)
+    : m_globalScope(globalScope), m_name(name) {}
+
+AudioWorkletProcessor::~AudioWorkletProcessor() {}
+
+void AudioWorkletProcessor::setInstance(v8::Isolate* isolate,
+                                        v8::Local<v8::Object> instance) {
+  DCHECK(!isMainThread());
+  m_instance.set(isolate, instance);
+}
+
+v8::Local<v8::Object> AudioWorkletProcessor::instanceLocal(
+    v8::Isolate* isolate) {
+  DCHECK(!isMainThread());
+  return m_instance.newLocal(isolate);
+}
+
+void AudioWorkletProcessor::process(AudioBuffer* inputBuffer,
+                                    AudioBuffer* outputBuffer) {
+  DCHECK(!isMainThread());
+  m_globalScope->process(this, inputBuffer, outputBuffer);
+}
+
+DEFINE_TRACE(AudioWorkletProcessor) {
+  visitor->trace(m_globalScope);
+}
+
+}  // namespace blink