Chromoting to report roundtrip latency

remoting/protocol/connection_to_client.h

 // 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.
 
 #ifndef REMOTING_PROTOCOL_CONNECTION_TO_CLIENT_H_
 #define REMOTING_PROTOCOL_CONNECTION_TO_CLIENT_H_
 
 #include <deque>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
+#include "base/synchronization/lock.h"
 #include "remoting/protocol/session.h"
 #include "remoting/protocol/video_writer.h"
 
 namespace remoting {
 namespace protocol {
 
 class ClientStub;
 class HostStub;
 class InputStub;
 class HostMessageDispatcher;
@@ skipping 11 matching lines @@
     virtual ~EventHandler() {}
 
     // Called when the network connection is opened.
     virtual void OnConnectionOpened(ConnectionToClient* connection) = 0;
 
     // Called when the network connection is closed.
     virtual void OnConnectionClosed(ConnectionToClient* connection) = 0;
 
     // Called when the network connection has failed.
     virtual void OnConnectionFailed(ConnectionToClient* connection) = 0;
+
+    // Called when sequence number is updated.
+    virtual void OnSequenceNumberUpdated(ConnectionToClient* connection,
+                                         int64 sequence_number) = 0;
   };
 
   // Constructs a ConnectionToClient object. |message_loop| is the message loop
   // that this object runs on. A viewer object receives events and messages from
   // a libjingle channel, these events are delegated to |handler|.
   // It is guaranteed that |handler| is called only on the |message_loop|.
   ConnectionToClient(MessageLoop* message_loop,
                      EventHandler* handler);
 
   virtual void Init(Session* session);
 
   // Returns the connection in use.
   virtual Session* session();
 
   // Disconnect the client connection. This method is allowed to be called
   // more than once and calls after the first one will be ignored.
   //
   // After this method is called all the send method calls will be ignored.
   virtual void Disconnect();
 
+  // Update the sequence number when received from the client. EventHandler
+  // will be called.
+  virtual void UpdateSequenceNumber(int64 sequence_number);
+
   // Send encoded update stream data to the viewer.
   virtual VideoStub* video_stub();
 
   // Return pointer to ClientStub.
   virtual ClientStub* client_stub();
 
   // These two setters should be called before Init().
   virtual void set_host_stub(HostStub* host_stub);
   virtual void set_input_stub(InputStub* input_stub);
 
@@ skipping 33 matching lines @@
   // Dispatcher for submitting messages to stubs.
   scoped_ptr<HostMessageDispatcher> dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ConnectionToClient);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_CONNECTION_TO_CLIENT_H_