AudioWorklet prototype

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

+// 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/AudioWorkletObjectProxy.h"
+
+#include <memory>
+#include "bindings/core/v8/ScriptSourceCode.h"
+#include "bindings/core/v8/WorkerOrWorkletScriptController.h"
+#include "core/workers/WorkerThread.h"
+#include "modules/webaudio/AudioWorkletGlobalScope.h"
+#include "modules/webaudio/AudioWorkletMessagingProxy.h"
+#include "modules/webaudio/AudioWorkletNode.h"
+#include "modules/webaudio/AudioWorkletProcessor.h"
+#include "modules/webaudio/AudioWorkletProcessorDefinition.h"
+#include "platform/wtf/PtrUtil.h"
+
+
+namespace blink {
+
+std::unique_ptr<AudioWorkletObjectProxy> AudioWorkletObjectProxy::Create(
+    const WeakPtr<AudioWorkletMessagingProxy>& messaging_proxy_weak_ptr,
+    ParentFrameTaskRunners* parent_frame_task_runners) {
+  DCHECK(messaging_proxy_weak_ptr);
+  return WTF::WrapUnique(new AudioWorkletObjectProxy(
+      messaging_proxy_weak_ptr, parent_frame_task_runners));
+}
+
+AudioWorkletObjectProxy::~AudioWorkletObjectProxy() {}
+
+void AudioWorkletObjectProxy::EvaluateScript(const String& source,
+                                                const KURL& script_url,
+                                                WorkerThread* worker_thread) {
+  AudioWorkletGlobalScope* global_scope =
+        ToAudioWorkletGlobalScope(worker_thread->GlobalScope());
+    global_scope->ScriptController()->Evaluate(
+        ScriptSourceCode(source, script_url));
+}
+
+void AudioWorkletObjectProxy::CreateProcessorInstance(
+      const String& name,
+      AudioWorkletHandler* handler,
+      WaitableEvent* done,
+      WorkerThread* worker_thread) {
+  AudioWorkletGlobalScope* global_scope =
+      ToAudioWorkletGlobalScope(worker_thread->GlobalScope());
+  ScriptState* script_state =
+      global_scope->ScriptController()->GetScriptState();
+
+  ScriptState::Scope scope(script_state);
+
+  AudioWorkletProcessor* processor = global_scope->CreateInstance(name);
+  handler->SetProcessor(processor);
+
+  done->Signal();
+}
+
+AudioWorkletObjectProxy::AudioWorkletObjectProxy(
+    const WeakPtr<AudioWorkletMessagingProxy>& messaging_proxy_weak_ptr,
+    ParentFrameTaskRunners* parent_frame_task_runners)
+    : ThreadedObjectProxyBase(parent_frame_task_runners),
+      messaging_proxy_weak_ptr_(messaging_proxy_weak_ptr) {}
+
+WeakPtr<ThreadedMessagingProxyBase>
+    AudioWorkletObjectProxy::MessagingProxyWeakPtr() {
+  return messaging_proxy_weak_ptr_;
+}
+
+}  // namespace blink