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// Copyright 2015 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 "remoting/protocol/webrtc_connection_to_host.h"
#include <utility>
#include "jingle/glue/thread_wrapper.h"
#include "remoting/protocol/client_control_dispatcher.h"
#include "remoting/protocol/client_event_dispatcher.h"
#include "remoting/protocol/client_stub.h"
#include "remoting/protocol/clipboard_stub.h"
#include "remoting/protocol/transport_context.h"
#include "remoting/protocol/video_renderer.h"
#include "remoting/protocol/webrtc_transport.h"
#include "remoting/protocol/webrtc_video_renderer_adapter.h"
namespace remoting {
namespace protocol {
WebrtcConnectionToHost::WebrtcConnectionToHost() {}
WebrtcConnectionToHost::~WebrtcConnectionToHost() {}
void WebrtcConnectionToHost::Connect(
scoped_ptr<Session> session,
scoped_refptr<TransportContext> transport_context,
HostEventCallback* event_callback) {
DCHECK(client_stub_);
DCHECK(clipboard_stub_);
transport_.reset(new WebrtcTransport(
jingle_glue::JingleThreadWrapper::current(), transport_context, this));
session_ = std::move(session);
session_->SetEventHandler(this);
session_->SetTransport(transport_.get());
event_callback_ = event_callback;
SetState(CONNECTING, OK);
}
const SessionConfig& WebrtcConnectionToHost::config() {
return session_->config();
}
ClipboardStub* WebrtcConnectionToHost::clipboard_forwarder() {
return &clipboard_forwarder_;
}
HostStub* WebrtcConnectionToHost::host_stub() {
return control_dispatcher_.get();
}
InputStub* WebrtcConnectionToHost::input_stub() {
return &event_forwarder_;
}
void WebrtcConnectionToHost::set_client_stub(ClientStub* client_stub) {
client_stub_ = client_stub;
}
void WebrtcConnectionToHost::set_clipboard_stub(ClipboardStub* clipboard_stub) {
clipboard_stub_ = clipboard_stub;
}
void WebrtcConnectionToHost::set_video_renderer(VideoRenderer* video_renderer) {
video_renderer_ = video_renderer;
}
void WebrtcConnectionToHost::set_audio_stub(AudioStub* audio_stub) {
NOTIMPLEMENTED();
}
void WebrtcConnectionToHost::OnSessionStateChange(Session::State state) {
DCHECK(event_callback_);
switch (state) {
case Session::INITIALIZING:
case Session::CONNECTING:
case Session::ACCEPTING:
case Session::ACCEPTED:
case Session::AUTHENTICATING:
// Don't care about these events.
break;
case Session::AUTHENTICATED:
SetState(AUTHENTICATED, OK);
break;
case Session::CLOSED:
CloseChannels();
SetState(CLOSED, OK);
break;
case Session::FAILED:
CloseChannels();
SetState(FAILED, session_->error());
break;
}
}
void WebrtcConnectionToHost::OnWebrtcTransportConnecting() {
control_dispatcher_.reset(new ClientControlDispatcher());
control_dispatcher_->Init(transport_->incoming_channel_factory(), this);
control_dispatcher_->set_client_stub(client_stub_);
control_dispatcher_->set_clipboard_stub(clipboard_stub_);
event_dispatcher_.reset(new ClientEventDispatcher());
event_dispatcher_->Init(transport_->outgoing_channel_factory(), this);
}
void WebrtcConnectionToHost::OnWebrtcTransportConnected() {}
void WebrtcConnectionToHost::OnWebrtcTransportError(ErrorCode error) {
CloseChannels();
SetState(FAILED, error);
}
void WebrtcConnectionToHost::OnWebrtcTransportMediaStreamAdded(
scoped_refptr<webrtc::MediaStreamInterface> stream) {
if (video_adapter_) {
LOG(WARNING)
<< "Received multiple media streams. Ignoring all except the last one.";
}
video_adapter_.reset(new WebrtcVideoRendererAdapter(
stream, video_renderer_->GetFrameConsumer()));
}
void WebrtcConnectionToHost::OnWebrtcTransportMediaStreamRemoved(
scoped_refptr<webrtc::MediaStreamInterface> stream) {
if (video_adapter_ && video_adapter_->label() == stream->label())
video_adapter_.reset();
}
void WebrtcConnectionToHost::OnChannelInitialized(
ChannelDispatcherBase* channel_dispatcher) {
NotifyIfChannelsReady();
}
void WebrtcConnectionToHost::OnChannelError(
ChannelDispatcherBase* channel_dispatcher,
ErrorCode error) {
LOG(ERROR) << "Failed to connect channel " << channel_dispatcher;
CloseChannels();
SetState(FAILED, CHANNEL_CONNECTION_ERROR);
}
ConnectionToHost::State WebrtcConnectionToHost::state() const {
return state_;
}
void WebrtcConnectionToHost::NotifyIfChannelsReady() {
if (!control_dispatcher_.get() || !control_dispatcher_->is_connected())
return;
if (!event_dispatcher_.get() || !event_dispatcher_->is_connected())
return;
// Start forwarding clipboard and input events.
clipboard_forwarder_.set_clipboard_stub(control_dispatcher_.get());
event_forwarder_.set_input_stub(event_dispatcher_.get());
SetState(CONNECTED, OK);
}
void WebrtcConnectionToHost::CloseChannels() {
clipboard_forwarder_.set_clipboard_stub(nullptr);
control_dispatcher_.reset();
event_forwarder_.set_input_stub(nullptr);
event_dispatcher_.reset();
}
void WebrtcConnectionToHost::SetState(State state, ErrorCode error) {
// |error| should be specified only when |state| is set to FAILED.
DCHECK(state == FAILED || error == OK);
if (state != state_) {
state_ = state;
error_ = error;
event_callback_->OnConnectionState(state_, error_);
}
}
} // namespace protocol
} // namespace remoting
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