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// Copyright 2016 The Chromium Authors
// 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.h"
#include "third_party/blink/renderer/bindings/core/v8/serialization/serialized_script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/workers/threaded_worklet_object_proxy.h"
#include "third_party/blink/renderer/core/workers/worker_clients.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet_messaging_proxy.h"
#include "third_party/blink/renderer/modules/webaudio/audio_worklet_node.h"
#include "third_party/blink/renderer/modules/webaudio/base_audio_context.h"
#include "third_party/blink/renderer/modules/webaudio/cross_thread_audio_worklet_processor_info.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
namespace blink {
AudioWorklet::AudioWorklet(BaseAudioContext* context)
: Worklet(*To<LocalDOMWindow>(context->GetExecutionContext())),
context_(context) {}
void AudioWorklet::CreateProcessor(
scoped_refptr<AudioWorkletHandler> handler,
MessagePortChannel message_port_channel,
scoped_refptr<SerializedScriptValue> node_options) {
DCHECK(IsMainThread());
DCHECK(GetMessagingProxy());
GetMessagingProxy()->CreateProcessor(std::move(handler),
std::move(message_port_channel),
std::move(node_options));
}
void AudioWorklet::NotifyGlobalScopeIsUpdated() {
DCHECK(IsMainThread());
if (!worklet_started_) {
context_->NotifyWorkletIsReady();
worklet_started_ = true;
}
}
BaseAudioContext* AudioWorklet::GetBaseAudioContext() const {
DCHECK(IsMainThread());
return context_.Get();
}
Vector<CrossThreadAudioParamInfo> AudioWorklet::GetParamInfoListForProcessor(
const String& name) {
DCHECK(IsMainThread());
DCHECK(GetMessagingProxy());
return GetMessagingProxy()->GetParamInfoListForProcessor(name);
}
bool AudioWorklet::IsProcessorRegistered(const String& name) {
DCHECK(IsMainThread());
DCHECK(GetMessagingProxy());
return GetMessagingProxy()->IsProcessorRegistered(name);
}
bool AudioWorklet::IsReady() {
DCHECK(IsMainThread());
return GetMessagingProxy() && GetMessagingProxy()->GetBackingWorkerThread();
}
bool AudioWorklet::NeedsToCreateGlobalScope() {
// This is a callback from `Worklet::FetchAndInvokeScript()` call, which only
// can be triggered by `Worklet.addModule()` call.
UseCounter::Count(GetExecutionContext(), WebFeature::kAudioWorkletAddModule);
return GetNumberOfGlobalScopes() == 0;
}
WorkletGlobalScopeProxy* AudioWorklet::CreateGlobalScope() {
DCHECK_EQ(GetNumberOfGlobalScopes(), 0u);
AudioWorkletMessagingProxy* proxy =
MakeGarbageCollected<AudioWorkletMessagingProxy>(GetExecutionContext(),
this);
proxy->Initialize(MakeGarbageCollected<WorkerClients>(),
ModuleResponsesMap(),
WorkerBackingThreadStartupData::CreateDefault());
return proxy;
}
AudioWorkletMessagingProxy* AudioWorklet::GetMessagingProxy() {
return GetNumberOfGlobalScopes() == 0
? nullptr
: static_cast<AudioWorkletMessagingProxy*>(
FindAvailableGlobalScope());
}
void AudioWorklet::Trace(Visitor* visitor) const {
visitor->Trace(context_);
Worklet::Trace(visitor);
}
} // namespace blink
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