AudioWorklet prototype

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

Index: third_party/WebKit/Source/modules/webaudio/AudioWorkletGlobalScope.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioWorkletGlobalScope.cpp b/third_party/WebKit/Source/modules/webaudio/AudioWorkletGlobalScope.cpp
index f97e28ee7d778971317e419fe0e755225e1a3c2a..dc3bd5328cf10af77197534cb6d0d5515ec34ed2 100644
--- a/third_party/WebKit/Source/modules/webaudio/AudioWorkletGlobalScope.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/AudioWorkletGlobalScope.cpp
@@ -4,11 +4,16 @@
 
 #include "modules/webaudio/AudioWorkletGlobalScope.h"
 
+#include "bindings/core/v8/Dictionary.h"
+#include "bindings/core/v8/IDLTypes.h"
+#include "bindings/core/v8/NativeValueTraitsImpl.h"
 #include "bindings/core/v8/ToV8ForCore.h"
 #include "bindings/core/v8/V8BindingForCore.h"
 #include "bindings/core/v8/WorkerOrWorkletScriptController.h"
+#include "bindings/modules/v8/V8AudioParamDescriptor.h"
 #include "core/dom/ExceptionCode.h"
 #include "modules/webaudio/AudioBuffer.h"
+#include "modules/webaudio/AudioParamDescriptor.h"
 #include "modules/webaudio/AudioWorkletProcessor.h"
 #include "modules/webaudio/AudioWorkletProcessorDefinition.h"
 #include "platform/bindings/V8BindingMacros.h"
@@ -24,6 +29,8 @@ AudioWorkletGlobalScope* AudioWorkletGlobalScope::Create(
     v8::Isolate* isolate,
     WorkerThread* thread,
     WorkerClients* worker_clients) {
+  LOG(INFO) << "AudioWorkletGlobalScope::RegisterProcessor thread = "
+            << thread;
   return new AudioWorkletGlobalScope(url, user_agent,
                                      std::move(security_origin), isolate,
                                      thread, worker_clients);
@@ -73,9 +80,9 @@ void AudioWorkletGlobalScope::registerProcessor(
   }
 
   v8::Isolate* isolate = ScriptController()->GetScriptState()->GetIsolate();
-  v8::Local<v8::Context> context =
-      ScriptController()->GetScriptState()->GetContext();
+  v8::Local<v8::Context> context = ScriptController()->GetContext();
 
+  // Get a handle for the class definition (i.e. constructor)
   if (!class_definition.V8Value()->IsFunction()) {
     exception_state.ThrowTypeError(
         "The processor definition is neither 'class' nor 'function'.");
@@ -83,8 +90,9 @@ void AudioWorkletGlobalScope::registerProcessor(
   }
 
   v8::Local<v8::Function> class_definition_local =
-      class_definition.V8Value().As<v8::Function>();
+      v8::Local<v8::Function>::Cast(class_definition.V8Value());
 
+  // Get a handle for |prototype| object out of class definition.
   v8::Local<v8::Value> prototype_value_local;
   bool prototype_extracted =
       class_definition_local->Get(context, V8String(isolate, "prototype"))
@@ -94,6 +102,7 @@ void AudioWorkletGlobalScope::registerProcessor(
   v8::Local<v8::Object> prototype_object_local =
       prototype_value_local.As<v8::Object>();
 
+  // Extract |process| function.
   v8::Local<v8::Value> process_value_local;
   bool process_extracted =
       prototype_object_local->Get(context, V8String(isolate, "process"))
@@ -137,11 +146,12 @@ AudioWorkletProcessor* AudioWorkletGlobalScope::CreateInstance(
   v8::Local<v8::Object> instance_local;
   if (!V8ObjectConstructor::NewInstance(isolate,
                                         definition->ConstructorLocal(isolate))
-           .ToLocal(&instance_local)) {
+          .ToLocal(&instance_local)) {
     return nullptr;
   }
 
-  AudioWorkletProcessor* processor = AudioWorkletProcessor::Create(this, name);
+  AudioWorkletProcessor* processor =
+      AudioWorkletProcessor::Create(this, definition);
   DCHECK(processor);
 
   processor->SetInstance(isolate, instance_local);
@@ -157,9 +167,10 @@ bool AudioWorkletGlobalScope::Process(AudioWorkletProcessor* processor,
   CHECK(output_buffer);
 
   ScriptState* script_state = ScriptController()->GetScriptState();
+  v8::Isolate* isolate = script_state->GetIsolate();
+
   ScriptState::Scope scope(script_state);
 
-  v8::Isolate* isolate = script_state->GetIsolate();
   AudioWorkletProcessorDefinition* definition =
       FindDefinition(processor->GetName());
   DCHECK(definition);