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// Copyright (c) 2011 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.
// ChromotingClient is the controller for the Client implementation.
#ifndef REMOTING_CLIENT_CHROMOTING_CLIENT_H_
#define REMOTING_CLIENT_CHROMOTING_CLIENT_H_
#include <list>
#include "base/task.h"
#include "base/time.h"
#include "remoting/client/client_config.h"
#include "remoting/client/chromoting_stats.h"
#include "remoting/client/chromoting_view.h"
#include "remoting/protocol/client_stub.h"
#include "remoting/protocol/connection_to_host.h"
#include "remoting/protocol/input_stub.h"
#include "remoting/protocol/video_stub.h"
#include "remoting/jingle_glue/xmpp_proxy.h"
class MessageLoop;
namespace remoting {
namespace protocol {
class LocalLoginStatus;
class NotifyResolutionRequest;
} // namespace protocol
class ClientContext;
class InputHandler;
class Logger;
class RectangleUpdateDecoder;
// TODO(sergeyu): Move VideoStub implementation to RectangleUpdateDecoder.
class ChromotingClient : public protocol::ConnectionToHost::HostEventCallback,
public protocol::ClientStub,
public protocol::VideoStub {
public:
// Objects passed in are not owned by this class.
ChromotingClient(const ClientConfig& config,
ClientContext* context,
protocol::ConnectionToHost* connection,
ChromotingView* view,
RectangleUpdateDecoder* rectangle_decoder,
InputHandler* input_handler,
Logger* logger,
Task* client_done);
virtual ~ChromotingClient();
void Start(scoped_refptr<XmppProxy> xmpp_proxy);
void Stop(const base::Closure& shutdown_task);
void ClientDone();
// Return the stats recorded by this client.
ChromotingStats* GetStats();
// Signals that the associated view may need updating.
virtual void Repaint();
// Sets the viewport to do display. The viewport may be larger and/or
// smaller than the actual image background being displayed.
//
// TODO(ajwong): This doesn't make sense to have here. We're going to have
// threading isseus since pepper view needs to be called from the main pepper
// thread synchronously really.
virtual void SetViewport(int x, int y, int width, int height);
// ConnectionToHost::HostEventCallback implementation.
virtual void OnConnectionOpened(protocol::ConnectionToHost* conn);
virtual void OnConnectionClosed(protocol::ConnectionToHost* conn);
virtual void OnConnectionFailed(protocol::ConnectionToHost* conn);
// ClientStub implementation.
virtual void NotifyResolution(const protocol::NotifyResolutionRequest* msg,
Task* done);
virtual void BeginSessionResponse(const protocol::LocalLoginStatus* msg,
Task* done);
// VideoStub implementation.
virtual void ProcessVideoPacket(const VideoPacket* packet, Task* done);
virtual int GetPendingPackets();
private:
struct QueuedVideoPacket {
QueuedVideoPacket(const VideoPacket* packet, Task* done)
: packet(packet), done(done) {
}
const VideoPacket* packet;
Task* done;
};
MessageLoop* message_loop();
// Initializes connection.
void Initialize();
// Convenience method for modifying the state on this object's message loop.
void SetConnectionState(ConnectionState s);
// If a packet is not being processed, dispatches a single message from the
// |received_packets_| queue.
void DispatchPacket();
// Callback method when a VideoPacket is processed.
// If |last_packet| is true then |decode_start| contains the timestamp when
// the packet will start to be processed.
void OnPacketDone(bool last_packet, base::Time decode_start);
void OnDisconnected(const base::Closure& shutdown_task);
// The following are not owned by this class.
ClientConfig config_;
ClientContext* context_;
protocol::ConnectionToHost* connection_;
ChromotingView* view_;
RectangleUpdateDecoder* rectangle_decoder_;
InputHandler* input_handler_;
Logger* logger_;
// If non-NULL, this is called when the client is done.
Task* client_done_;
ConnectionState state_;
// Contains all video packets that have been received, but have not yet been
// processed.
//
// Used to serialize sending of messages to the client.
std::list<QueuedVideoPacket> received_packets_;
// True if a message is being processed. Can be used to determine if it is
// safe to dispatch another message.
bool packet_being_processed_;
// Record the statistics of the connection.
ChromotingStats stats_;
// Keep track of the last sequence number bounced back from the host.
int64 last_sequence_number_;
DISALLOW_COPY_AND_ASSIGN(ChromotingClient);
};
} // namespace remoting
DISABLE_RUNNABLE_METHOD_REFCOUNT(remoting::ChromotingClient);
#endif // REMOTING_CLIENT_CHROMOTING_CLIENT_H_
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