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// 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 "third_party/blink/renderer/modules/webaudio/audio_worklet_messaging_proxy.h"
#include <utility>
#include "base/feature_list.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/renderer/bindings/core/v8/serialization/serialized_script_value.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/messaging/message_port.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet_global_scope.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet_node.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet_object_proxy.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet_processor.h"
#include "third_party/blink/renderer/modules/webaudio/offline_audio_worklet_thread.h"
#include "third_party/blink/renderer/modules/webaudio/realtime_audio_worklet_thread.h"
#include "third_party/blink/renderer/modules/webaudio/semi_realtime_audio_worklet_thread.h"
#include "third_party/blink/renderer/modules/webaudio/cross_thread_audio_worklet_processor_info.h"
namespace blink {
AudioWorkletMessagingProxy::AudioWorkletMessagingProxy(
ExecutionContext* execution_context,
AudioWorklet* worklet)
: ThreadedWorkletMessagingProxy(execution_context), worklet_(worklet) {}
void AudioWorkletMessagingProxy::CreateProcessor(
scoped_refptr<AudioWorkletHandler> handler,
MessagePortChannel message_port_channel,
scoped_refptr<SerializedScriptValue> node_options) {
DCHECK(IsMainThread());
PostCrossThreadTask(
*GetWorkerThread()->GetTaskRunner(TaskType::kMiscPlatformAPI), FROM_HERE,
CrossThreadBindOnce(
&AudioWorkletMessagingProxy::CreateProcessorOnRenderingThread,
WrapCrossThreadPersistent(this),
CrossThreadUnretained(GetWorkerThread()), handler, handler->Name(),
std::move(message_port_channel), std::move(node_options)));
}
void AudioWorkletMessagingProxy::CreateProcessorOnRenderingThread(
WorkerThread* worker_thread,
scoped_refptr<AudioWorkletHandler> handler,
const String& name,
MessagePortChannel message_port_channel,
scoped_refptr<SerializedScriptValue> node_options) {
DCHECK(worker_thread->IsCurrentThread());
AudioWorkletGlobalScope* global_scope =
To<AudioWorkletGlobalScope>(worker_thread->GlobalScope());
AudioWorkletProcessor* processor = global_scope->CreateProcessor(
name, message_port_channel, std::move(node_options));
handler->SetProcessorOnRenderThread(processor);
}
void AudioWorkletMessagingProxy::SynchronizeWorkletProcessorInfoList(
std::unique_ptr<Vector<CrossThreadAudioWorkletProcessorInfo>> info_list) {
DCHECK(IsMainThread());
for (auto& processor_info : *info_list) {
processor_info_map_.insert(processor_info.Name(),
processor_info.ParamInfoList());
}
// Notify AudioWorklet object that the global scope has been updated after the
// script evaluation.
worklet_->NotifyGlobalScopeIsUpdated();
}
bool AudioWorkletMessagingProxy::IsProcessorRegistered(
const String& name) const {
return processor_info_map_.Contains(name);
}
const Vector<CrossThreadAudioParamInfo>
AudioWorkletMessagingProxy::GetParamInfoListForProcessor(
const String& name) const {
DCHECK(IsProcessorRegistered(name));
return processor_info_map_.at(name);
}
WorkerThread* AudioWorkletMessagingProxy::GetBackingWorkerThread() {
return GetWorkerThread();
}
std::unique_ptr<ThreadedWorkletObjectProxy>
AudioWorkletMessagingProxy::CreateObjectProxy(
ThreadedWorkletMessagingProxy* messaging_proxy,
ParentExecutionContextTaskRunners* parent_execution_context_task_runners) {
return std::make_unique<AudioWorkletObjectProxy>(
static_cast<AudioWorkletMessagingProxy*>(messaging_proxy),
parent_execution_context_task_runners,
worklet_->GetBaseAudioContext()->sampleRate());
}
std::unique_ptr<WorkerThread> AudioWorkletMessagingProxy::CreateWorkerThread() {
const auto* frame = To<LocalDOMWindow>(GetExecutionContext())->GetFrame();
DCHECK(frame);
return CreateWorkletThreadWithConstraints(
WorkletObjectProxy(),
worklet_->GetBaseAudioContext()->HasRealtimeConstraint(),
frame->IsMainFrame());
}
std::unique_ptr<WorkerThread>
AudioWorkletMessagingProxy::CreateWorkletThreadWithConstraints(
WorkerReportingProxy& worker_reporting_proxy,
const bool has_realtime_constraint,
const bool is_top_level_frame) {
if (!has_realtime_constraint)
return std::make_unique<OfflineAudioWorkletThread>(worker_reporting_proxy);
// If the flag is set, it overrides the default thread priority for
// subframes. This is only allowed for the experimental purposes, and this
// flag will be deprecated in M90. (See crbug.com/1156842)
if (is_top_level_frame ||
base::FeatureList::IsEnabled(features::kAudioWorkletRealtimeThread)) {
return std::make_unique<RealtimeAudioWorkletThread>(worker_reporting_proxy);
}
return std::make_unique<SemiRealtimeAudioWorkletThread>(
worker_reporting_proxy);
}
void AudioWorkletMessagingProxy::Trace(Visitor* visitor) const {
visitor->Trace(worklet_);
ThreadedWorkletMessagingProxy::Trace(visitor);
}
} // namespace blink
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