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// Copyright (c) 2012 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/callback.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time.h"
#include "remoting/client/client_config.h"
#include "remoting/client/chromoting_stats.h"
#include "remoting/protocol/client_stub.h"
#include "remoting/protocol/clipboard_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"
namespace base {
class SingleThreadTaskRunner;
} // namespace base
namespace remoting {
namespace protocol {
class TransportFactory;
} // namespace protocol
class AudioDecodeScheduler;
class AudioPlayer;
class ClientContext;
class ClientUserInterface;
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* client_context,
protocol::ConnectionToHost* connection,
ClientUserInterface* user_interface,
RectangleUpdateDecoder* rectangle_decoder,
scoped_ptr<AudioPlayer> audio_player);
virtual ~ChromotingClient();
// Start/stop the client. Must be called on the main thread.
void Start(scoped_refptr<XmppProxy> xmpp_proxy,
scoped_ptr<protocol::TransportFactory> transport_factory);
void Stop(const base::Closure& shutdown_task);
// Return the stats recorded by this client.
ChromotingStats* GetStats();
// ClipboardStub implementation for receiving clipboard data from host.
virtual void InjectClipboardEvent(const protocol::ClipboardEvent& event)
OVERRIDE;
// CursorShapeStub implementation for receiving cursor shape updates.
virtual void SetCursorShape(const protocol::CursorShapeInfo& cursor_shape)
OVERRIDE;
// ConnectionToHost::HostEventCallback implementation.
virtual void OnConnectionState(
protocol::ConnectionToHost::State state,
protocol::ErrorCode error) OVERRIDE;
virtual void OnConnectionReady(bool ready) OVERRIDE;
// VideoStub implementation.
virtual void ProcessVideoPacket(scoped_ptr<VideoPacket> packet,
const base::Closure& done) OVERRIDE;
virtual int GetPendingVideoPackets() OVERRIDE;
private:
struct QueuedVideoPacket {
QueuedVideoPacket(scoped_ptr<VideoPacket> packet,
const base::Closure& done);
~QueuedVideoPacket();
VideoPacket* packet;
base::Closure done;
};
// Initializes connection.
void Initialize();
// 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_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
protocol::ConnectionToHost* connection_;
ClientUserInterface* user_interface_;
// TODO(kxing): Make ChromotingClient own RectangleUpdateDecoder.
RectangleUpdateDecoder* rectangle_decoder_;
scoped_ptr<AudioDecodeScheduler> audio_decode_scheduler_;
// If non-NULL, this is called when the client is done.
base::Closure client_done_;
// 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_;
// WeakPtr used to avoid tasks accessing the client after it is deleted.
base::WeakPtrFactory<ChromotingClient> weak_factory_;
base::WeakPtr<ChromotingClient> weak_ptr_;
DISALLOW_COPY_AND_ASSIGN(ChromotingClient);
};
} // namespace remoting
#endif // REMOTING_CLIENT_CHROMOTING_CLIENT_H_
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