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// Copyright (c) 2010 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/connection_to_client.h"
#include "google/protobuf/message.h"
#include "net/base/io_buffer.h"
#include "remoting/protocol/util.h"
// TODO(hclam): Remove this header once MessageDispatcher is used.
#include "remoting/base/multiple_array_input_stream.h"
namespace remoting {
namespace protocol {
// Determine how many update streams we should count to find the size of
// average update stream.
static const size_t kAverageUpdateStream = 10;
ConnectionToClient::ConnectionToClient(MessageLoop* message_loop,
EventHandler* handler)
: loop_(message_loop),
handler_(handler) {
DCHECK(loop_);
DCHECK(handler_);
}
ConnectionToClient::~ConnectionToClient() {
// TODO(hclam): When we shut down the viewer we may have to close the
// connection.
}
void ConnectionToClient::Init(protocol::Session* session) {
DCHECK_EQ(session->message_loop(), MessageLoop::current());
session_ = session;
session_->SetStateChangeCallback(
NewCallback(this, &ConnectionToClient::OnSessionStateChange));
}
protocol::Session* ConnectionToClient::session() {
return session_;
}
void ConnectionToClient::SendInitClientMessage(int width, int height) {
DCHECK_EQ(loop_, MessageLoop::current());
// If we are disconnected then return.
if (!session_)
return;
ChromotingHostMessage msg;
msg.mutable_init_client()->set_width(width);
msg.mutable_init_client()->set_height(height);
DCHECK(msg.IsInitialized());
control_writer_.SendMessage(msg);
}
void ConnectionToClient::SendVideoPacket(const VideoPacket& packet) {
DCHECK_EQ(loop_, MessageLoop::current());
// If we are disconnected then return.
if (!session_)
return;
video_writer_->SendPacket(packet);
}
int ConnectionToClient::GetPendingUpdateStreamMessages() {
DCHECK_EQ(loop_, MessageLoop::current());
return video_writer_->GetPendingPackets();
}
void ConnectionToClient::Disconnect() {
DCHECK_EQ(loop_, MessageLoop::current());
// If there is a channel then close it and release the reference.
if (session_) {
session_->Close(NewRunnableMethod(this, &ConnectionToClient::OnClosed));
session_ = NULL;
}
}
ConnectionToClient::ConnectionToClient() {}
void ConnectionToClient::OnSessionStateChange(
protocol::Session::State state) {
if (state == protocol::Session::CONNECTED) {
control_writer_.Init(session_->control_channel());
event_reader_.Init<ChromotingClientMessage>(
session_->event_channel(),
NewCallback(this, &ConnectionToClient::OnMessageReceived));
video_writer_.reset(VideoWriter::Create(session_->config()));
video_writer_->Init(session_);
}
loop_->PostTask(FROM_HERE,
NewRunnableMethod(this, &ConnectionToClient::StateChangeTask, state));
}
void ConnectionToClient::OnMessageReceived(ChromotingClientMessage* message) {
loop_->PostTask(FROM_HERE,
NewRunnableMethod(this, &ConnectionToClient::MessageReceivedTask,
message));
}
void ConnectionToClient::StateChangeTask(protocol::Session::State state) {
DCHECK_EQ(loop_, MessageLoop::current());
DCHECK(handler_);
switch(state) {
case protocol::Session::CONNECTING:
break;
// Don't care about this message.
case protocol::Session::CONNECTED:
handler_->OnConnectionOpened(this);
break;
case protocol::Session::CLOSED:
handler_->OnConnectionClosed(this);
break;
case protocol::Session::FAILED:
handler_->OnConnectionFailed(this);
break;
default:
// We shouldn't receive other states.
NOTREACHED();
}
}
void ConnectionToClient::MessageReceivedTask(ChromotingClientMessage* message) {
DCHECK_EQ(loop_, MessageLoop::current());
DCHECK(handler_);
handler_->HandleMessage(this, message);
}
// OnClosed() is used as a callback for protocol::Session::Close().
void ConnectionToClient::OnClosed() {
}
} // namespace protocol
} // namespace remoting
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