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      1 /*
      2  * libjingle
      3  * Copyright 2012, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef PEERCONNECTION_SAMPLES_CLIENT_CONDUCTOR_H_
     29 #define PEERCONNECTION_SAMPLES_CLIENT_CONDUCTOR_H_
     30 #pragma once
     31 
     32 #include <deque>
     33 #include <map>
     34 #include <set>
     35 #include <string>
     36 
     37 #include "talk/examples/peerconnection/client/main_wnd.h"
     38 #include "talk/examples/peerconnection/client/peer_connection_client.h"
     39 #include "talk/app/webrtc/mediastreaminterface.h"
     40 #include "talk/app/webrtc/peerconnectioninterface.h"
     41 #include "talk/base/scoped_ptr.h"
     42 
     43 namespace webrtc {
     44 class VideoCaptureModule;
     45 }  // namespace webrtc
     46 
     47 namespace cricket {
     48 class VideoRenderer;
     49 }  // namespace cricket
     50 
     51 class Conductor
     52   : public webrtc::PeerConnectionObserver,
     53     public webrtc::CreateSessionDescriptionObserver,
     54     public PeerConnectionClientObserver,
     55     public MainWndCallback {
     56  public:
     57   enum CallbackID {
     58     MEDIA_CHANNELS_INITIALIZED = 1,
     59     PEER_CONNECTION_CLOSED,
     60     SEND_MESSAGE_TO_PEER,
     61     PEER_CONNECTION_ERROR,
     62     NEW_STREAM_ADDED,
     63     STREAM_REMOVED,
     64   };
     65 
     66   Conductor(PeerConnectionClient* client, MainWindow* main_wnd);
     67 
     68   bool connection_active() const;
     69 
     70   virtual void Close();
     71 
     72  protected:
     73   ~Conductor();
     74   bool InitializePeerConnection();
     75   void DeletePeerConnection();
     76   void EnsureStreamingUI();
     77   void AddStreams();
     78   cricket::VideoCapturer* OpenVideoCaptureDevice();
     79 
     80   //
     81   // PeerConnectionObserver implementation.
     82   //
     83   virtual void OnError();
     84   virtual void OnStateChange(
     85       webrtc::PeerConnectionObserver::StateType state_changed) {}
     86   virtual void OnAddStream(webrtc::MediaStreamInterface* stream);
     87   virtual void OnRemoveStream(webrtc::MediaStreamInterface* stream);
     88   virtual void OnRenegotiationNeeded() {}
     89   virtual void OnIceChange() {}
     90   virtual void OnIceCandidate(const webrtc::IceCandidateInterface* candidate);
     91 
     92   //
     93   // PeerConnectionClientObserver implementation.
     94   //
     95 
     96   virtual void OnSignedIn();
     97 
     98   virtual void OnDisconnected();
     99 
    100   virtual void OnPeerConnected(int id, const std::string& name);
    101 
    102   virtual void OnPeerDisconnected(int id);
    103 
    104   virtual void OnMessageFromPeer(int peer_id, const std::string& message);
    105 
    106   virtual void OnMessageSent(int err);
    107 
    108   virtual void OnServerConnectionFailure();
    109 
    110   //
    111   // MainWndCallback implementation.
    112   //
    113 
    114   virtual void StartLogin(const std::string& server, int port);
    115 
    116   virtual void DisconnectFromServer();
    117 
    118   virtual void ConnectToPeer(int peer_id);
    119 
    120   virtual void DisconnectFromCurrentPeer();
    121 
    122   virtual void UIThreadCallback(int msg_id, void* data);
    123 
    124   // CreateSessionDescriptionObserver implementation.
    125   virtual void OnSuccess(webrtc::SessionDescriptionInterface* desc);
    126   virtual void OnFailure(const std::string& error);
    127 
    128  protected:
    129   // Send a message to the remote peer.
    130   void SendMessage(const std::string& json_object);
    131 
    132   int peer_id_;
    133   talk_base::scoped_refptr<webrtc::PeerConnectionInterface> peer_connection_;
    134   talk_base::scoped_refptr<webrtc::PeerConnectionFactoryInterface>
    135       peer_connection_factory_;
    136   PeerConnectionClient* client_;
    137   MainWindow* main_wnd_;
    138   std::deque<std::string*> pending_messages_;
    139   std::map<std::string, talk_base::scoped_refptr<webrtc::MediaStreamInterface> >
    140       active_streams_;
    141   std::string server_;
    142 };
    143 
    144 #endif  // PEERCONNECTION_SAMPLES_CLIENT_CONDUCTOR_H_
    145