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// Copyright 2017 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/webrtc_set_description_observer.h"
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/task/single_thread_task_runner.h"
namespace blink {
std::unique_ptr<webrtc::SessionDescriptionInterface> CopySessionDescription(
const webrtc::SessionDescriptionInterface* description) {
if (!description)
return nullptr;
return description->Clone();
}
WebRtcSetDescriptionObserver::States::States()
: signaling_state(
webrtc::PeerConnectionInterface::SignalingState::kClosed) {}
WebRtcSetDescriptionObserver::States::States(States&& other)
: signaling_state(other.signaling_state),
sctp_transport_state(std::move(other.sctp_transport_state)),
transceiver_states(std::move(other.transceiver_states)),
pending_local_description(std::move(other.pending_local_description)),
current_local_description(std::move(other.current_local_description)),
pending_remote_description(std::move(other.pending_remote_description)),
current_remote_description(std::move(other.current_remote_description)) {}
WebRtcSetDescriptionObserver::States::~States() = default;
WebRtcSetDescriptionObserver::States& WebRtcSetDescriptionObserver::States::
operator=(States&& other) {
signaling_state = other.signaling_state;
sctp_transport_state = std::move(other.sctp_transport_state);
transceiver_states = std::move(other.transceiver_states);
pending_local_description = std::move(other.pending_local_description);
current_local_description = std::move(other.current_local_description);
pending_remote_description = std::move(other.pending_remote_description);
current_remote_description = std::move(other.current_remote_description);
return *this;
}
WebRtcSetDescriptionObserver::WebRtcSetDescriptionObserver() = default;
WebRtcSetDescriptionObserver::~WebRtcSetDescriptionObserver() = default;
WebRtcSetDescriptionObserverHandlerImpl::
WebRtcSetDescriptionObserverHandlerImpl(
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> signaling_task_runner,
webrtc::scoped_refptr<webrtc::PeerConnectionInterface> pc,
scoped_refptr<blink::WebRtcMediaStreamTrackAdapterMap>
track_adapter_map,
scoped_refptr<WebRtcSetDescriptionObserver> observer)
: main_task_runner_(std::move(main_task_runner)),
signaling_task_runner_(std::move(signaling_task_runner)),
pc_(std::move(pc)),
track_adapter_map_(std::move(track_adapter_map)),
observer_(std::move(observer)) {}
WebRtcSetDescriptionObserverHandlerImpl::
~WebRtcSetDescriptionObserverHandlerImpl() = default;
void WebRtcSetDescriptionObserverHandlerImpl::OnSetDescriptionComplete(
webrtc::RTCError error) {
CHECK(signaling_task_runner_->BelongsToCurrentThread());
std::vector<webrtc::scoped_refptr<webrtc::RtpTransceiverInterface>>
receiver_only_transceivers;
std::vector<webrtc::scoped_refptr<webrtc::RtpTransceiverInterface>>
transceivers;
// Only surface transceiver states if the peer connection is not closed. If
// the peer connection is closed, the peer connection handler may have been
// destroyed along with any track adapters that TransceiverStateSurfacer
// assumes exist. This is treated as a special case due to
// https://crbug.com/897251.
if (pc_->signaling_state() != webrtc::PeerConnectionInterface::kClosed) {
transceivers = pc_->GetTransceivers();
}
blink::TransceiverStateSurfacer transceiver_state_surfacer(
main_task_runner_, signaling_task_runner_);
transceiver_state_surfacer.Initialize(pc_, track_adapter_map_,
std::move(transceivers));
std::unique_ptr<webrtc::SessionDescriptionInterface>
pending_local_description =
CopySessionDescription(pc_->pending_local_description());
std::unique_ptr<webrtc::SessionDescriptionInterface>
current_local_description =
CopySessionDescription(pc_->current_local_description());
std::unique_ptr<webrtc::SessionDescriptionInterface>
pending_remote_description =
CopySessionDescription(pc_->pending_remote_description());
std::unique_ptr<webrtc::SessionDescriptionInterface>
current_remote_description =
CopySessionDescription(pc_->current_remote_description());
main_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&WebRtcSetDescriptionObserverHandlerImpl::
OnSetDescriptionCompleteOnMainThread,
this, std::move(error), pc_->signaling_state(),
std::move(transceiver_state_surfacer),
std::move(pending_local_description),
std::move(current_local_description),
std::move(pending_remote_description),
std::move(current_remote_description)));
}
void WebRtcSetDescriptionObserverHandlerImpl::
OnSetDescriptionCompleteOnMainThread(
webrtc::RTCError error,
webrtc::PeerConnectionInterface::SignalingState signaling_state,
blink::TransceiverStateSurfacer transceiver_state_surfacer,
std::unique_ptr<webrtc::SessionDescriptionInterface>
pending_local_description,
std::unique_ptr<webrtc::SessionDescriptionInterface>
current_local_description,
std::unique_ptr<webrtc::SessionDescriptionInterface>
pending_remote_description,
std::unique_ptr<webrtc::SessionDescriptionInterface>
current_remote_description) {
CHECK(main_task_runner_->BelongsToCurrentThread());
WebRtcSetDescriptionObserver::States states;
states.signaling_state = signaling_state;
states.sctp_transport_state =
transceiver_state_surfacer.SctpTransportSnapshot();
states.transceiver_states = transceiver_state_surfacer.ObtainStates();
states.pending_local_description = std::move(pending_local_description);
states.current_local_description = std::move(current_local_description);
states.pending_remote_description = std::move(pending_remote_description);
states.current_remote_description = std::move(current_remote_description);
observer_->OnSetDescriptionComplete(std::move(error), std::move(states));
}
scoped_refptr<WebRtcSetLocalDescriptionObserverHandler>
WebRtcSetLocalDescriptionObserverHandler::Create(
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> signaling_task_runner,
webrtc::scoped_refptr<webrtc::PeerConnectionInterface> pc,
scoped_refptr<blink::WebRtcMediaStreamTrackAdapterMap> track_adapter_map,
scoped_refptr<WebRtcSetDescriptionObserver> observer) {
return new webrtc::RefCountedObject<WebRtcSetLocalDescriptionObserverHandler>(
std::move(main_task_runner), std::move(signaling_task_runner),
std::move(pc), std::move(track_adapter_map), std::move(observer));
}
WebRtcSetLocalDescriptionObserverHandler::
WebRtcSetLocalDescriptionObserverHandler(
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> signaling_task_runner,
webrtc::scoped_refptr<webrtc::PeerConnectionInterface> pc,
scoped_refptr<blink::WebRtcMediaStreamTrackAdapterMap>
track_adapter_map,
scoped_refptr<WebRtcSetDescriptionObserver> observer)
: handler_impl_(
base::MakeRefCounted<WebRtcSetDescriptionObserverHandlerImpl>(
std::move(main_task_runner),
std::move(signaling_task_runner),
std::move(pc),
std::move(track_adapter_map),
std::move(observer))) {}
WebRtcSetLocalDescriptionObserverHandler::
~WebRtcSetLocalDescriptionObserverHandler() = default;
void WebRtcSetLocalDescriptionObserverHandler::OnSetLocalDescriptionComplete(
webrtc::RTCError error) {
handler_impl_->OnSetDescriptionComplete(std::move(error));
}
scoped_refptr<WebRtcSetRemoteDescriptionObserverHandler>
WebRtcSetRemoteDescriptionObserverHandler::Create(
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> signaling_task_runner,
webrtc::scoped_refptr<webrtc::PeerConnectionInterface> pc,
scoped_refptr<blink::WebRtcMediaStreamTrackAdapterMap> track_adapter_map,
scoped_refptr<WebRtcSetDescriptionObserver> observer) {
return new webrtc::RefCountedObject<
WebRtcSetRemoteDescriptionObserverHandler>(
std::move(main_task_runner), std::move(signaling_task_runner),
std::move(pc), std::move(track_adapter_map), std::move(observer));
}
WebRtcSetRemoteDescriptionObserverHandler::
WebRtcSetRemoteDescriptionObserverHandler(
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> signaling_task_runner,
webrtc::scoped_refptr<webrtc::PeerConnectionInterface> pc,
scoped_refptr<blink::WebRtcMediaStreamTrackAdapterMap>
track_adapter_map,
scoped_refptr<WebRtcSetDescriptionObserver> observer)
: handler_impl_(
base::MakeRefCounted<WebRtcSetDescriptionObserverHandlerImpl>(
std::move(main_task_runner),
std::move(signaling_task_runner),
std::move(pc),
std::move(track_adapter_map),
std::move(observer))) {}
WebRtcSetRemoteDescriptionObserverHandler::
~WebRtcSetRemoteDescriptionObserverHandler() = default;
void WebRtcSetRemoteDescriptionObserverHandler::OnSetRemoteDescriptionComplete(
webrtc::RTCError error) {
handler_impl_->OnSetDescriptionComplete(std::move(error));
}
} // namespace blink
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