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// Copyright 2024 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/peerconnection/rtc_rtp_transport.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/modules/peerconnection/adapters/web_rtc_cross_thread_copier.h"
#include "third_party/blink/renderer/modules/peerconnection/peer_connection_dependency_factory.h"
#include "third_party/blink/renderer/platform/peerconnection/webrtc_util.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier_base.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
namespace WTF {
template <>
struct CrossThreadCopier<Vector<scoped_refptr<blink::FeedbackProvider>>>
: public CrossThreadCopierPassThrough<
Vector<scoped_refptr<blink::FeedbackProvider>>> {
STATIC_ONLY(CrossThreadCopier);
};
} // namespace WTF
namespace blink {
// This method runs in the worker context, once PostCustomEvent appears.
Event* CreateEvent(
CrossThreadWeakHandle<RTCRtpTransport> rtp_transport,
scoped_refptr<base::SequencedTaskRunner> rtp_transport_task_runner,
ScriptState* script_state,
CustomEventMessage data) {
auto* processor = MakeGarbageCollected<RTCRtpTransportProcessor>(
ExecutionContext::From(script_state));
auto* event = MakeGarbageCollected<RTCRtpTransportProcessorEvent>(processor);
// Reply to the RTCRtpTransport object on the main thread with a handle to
// the created Processor.
PostCrossThreadTask(
*rtp_transport_task_runner, FROM_HERE,
CrossThreadBindOnce(
&RTCRtpTransport::SetProcessorHandle,
MakeUnwrappingCrossThreadWeakHandle(rtp_transport),
MakeCrossThreadWeakHandle(processor),
WrapRefCounted(ExecutionContext::From(script_state)
->GetTaskRunner(TaskType::kInternalMediaRealTime)
.get())));
return event;
}
RTCRtpTransport::RTCRtpTransport(ExecutionContext* context)
: ExecutionContextClient(context) {}
RTCRtpTransport::~RTCRtpTransport() = default;
void RTCRtpTransport::createProcessor(ScriptState* script_state,
DedicatedWorker* worker,
ExceptionState& exception_state) {
createProcessor(script_state, worker, ScriptValue(), exception_state);
}
void RTCRtpTransport::createProcessor(ScriptState* script_state,
DedicatedWorker* worker,
const ScriptValue& options,
ExceptionState& exception_state) {
createProcessor(script_state, worker, options, /* transfer=*/{},
exception_state);
}
void RTCRtpTransport::createProcessor(ScriptState* script_state,
DedicatedWorker* worker,
const ScriptValue& options,
HeapVector<ScriptObject> transfer,
ExceptionState& exception_state) {
worker->PostCustomEvent(
TaskType::kInternalMediaRealTime, script_state,
CrossThreadBindRepeating(
&CreateEvent, MakeCrossThreadWeakHandle(this),
ExecutionContext::From(script_state)
->GetTaskRunner(TaskType::kInternalMediaRealTime)),
CrossThreadFunction<Event*(ScriptState*)>(), options, std::move(transfer),
exception_state);
}
void RTCRtpTransport::RegisterFeedbackProvider(
scoped_refptr<FeedbackProvider> feedback_provider) {
if (processor_) {
CHECK(processor_task_runner_);
feedback_provider->SetProcessor(*processor_, processor_task_runner_);
}
feedback_providers_.push_back(std::move(feedback_provider));
if (processor_) {
PostCrossThreadTask(
*processor_task_runner_, FROM_HERE,
CrossThreadBindOnce(&RTCRtpTransportProcessor ::SetFeedbackProviders,
MakeUnwrappingCrossThreadWeakHandle(*processor_),
feedback_providers_));
}
}
void RTCRtpTransport::SetProcessorHandle(
CrossThreadWeakHandle<RTCRtpTransportProcessor> processor,
scoped_refptr<base::SequencedTaskRunner> processor_task_runner) {
processor_.emplace(std::move(processor));
processor_task_runner_ = processor_task_runner;
for (auto& feedback_provider : feedback_providers_) {
feedback_provider->SetProcessor(*processor_, processor_task_runner_);
}
PostCrossThreadTask(
*processor_task_runner_, FROM_HERE,
CrossThreadBindOnce(&RTCRtpTransportProcessor ::SetFeedbackProviders,
MakeUnwrappingCrossThreadWeakHandle(*processor_),
feedback_providers_));
}
void RTCRtpTransport::Trace(Visitor* visitor) const {
ScriptWrappable::Trace(visitor);
ExecutionContextClient::Trace(visitor);
}
} // namespace blink
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