[DO NOT SUBMIT] AudioWorklet FS1: importing scripts

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

+// Copyright 2016 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/AudioWorkletProcessorDefinition.h"
+
+#include "bindings/core/v8/ScriptState.h"
+#include "bindings/core/v8/V8Binding.h"
+#include "bindings/core/v8/V8BindingMacros.h"
+#include "bindings/core/v8/V8ObjectConstructor.h"
+#include "core/dom/ExecutionContext.h"
+
+namespace blink {
+
+AudioWorkletProcessorDefinition* AudioWorkletProcessorDefinition::create(ScriptState* scriptState, v8::Local<v8::Function> constructor, v8::Local<v8::Function> process)
+{
+    return new AudioWorkletProcessorDefinition(scriptState, constructor, process);
+}
+
+AudioWorkletProcessorDefinition::AudioWorkletProcessorDefinition(ScriptState* scriptState, v8::Local<v8::Function> constructor, v8::Local<v8::Function> process)
+    : m_scriptState(scriptState)
+    , m_constructor(scriptState->isolate(), constructor)
+    , m_process(scriptState->isolate(), process)
+{
+}
+
+AudioWorkletProcessorDefinition::~AudioWorkletProcessorDefinition()
+{
+}
+
+void AudioWorkletProcessorDefinition::process()
+{
+    // TODO: currently this happens in the main thread!!!
+
+    // ScriptState::Scope scope(m_scriptState.get());
+
+    // maybeCreateProcessInstance();
+
+    // v8::Isolate* isolate = m_scriptState->isolate();
+
+    // We may have failed to create an instance class, in which case produce an
+    // invalid image.
+    // if (isUndefinedOrNull(instance))
+    //     return nullptr;
+
+    // TODO: do some audio stuff.
+    // v8::Local<v8::Value> argv[] = {
+    //     toV8(someAudioStuff, m_scriptState->context()->Global(), isolate),
+    // };
+
+    // v8::Local<v8::Function> process = m_process.newLocal(isolate);
+
+    // v8::TryCatch block(isolate);
+    // block.SetVerbose(true);
+
+    // V8ScriptRunner::callFunction(process, m_scriptState->getExecutionContext(), instance, 2, argv, isolate);
+
+    // The paint function may have produced an error, in which case produce an
+    // invalid image.
+    // if (block.HasCaught()) {
+    //     return;
+    // }
+
+    return;
+}
+
+void AudioWorkletProcessorDefinition::maybeCreateProcessInstance()
+{
+    if (m_didCallConstructor)
+        return;
+
+    // DCHECK(m_instance.isEmpty());
+
+    // v8::Isolate* isolate = m_scriptState->isolate();
+    // v8::Local<v8::Function> constructor = m_constructor.newLocal(isolate);
+    // DCHECK(!isUndefinedOrNull(constructor));
+
+    // v8::Local<v8::Object> processInstance;
+    // if (V8ObjectConstructor::newInstance(isolate, constructor).ToLocal(&processInstance)) {
+    //     m_instance.set(isolate, processInstance);
+    // }
+
+    m_didCallConstructor = true;
+}
+
+} // namespace blink