content/renderer/media/peer_connection_tracker.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_RENDERER_MEDIA_PEERCONNECTION_TRACKER_H_
   6 #define CONTENT_RENDERER_MEDIA_PEERCONNECTION_TRACKER_H_
   7
   8 #include <map>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/threading/thread_checker.h"
  13 #include "content/public/renderer/render_process_observer.h"
  14 #include "third_party/WebKit/public/platform/WebMediaStream.h"
  15 #include "third_party/WebKit/public/platform/WebRTCPeerConnectionHandlerClient.h"
  16 #include "third_party/WebKit/public/platform/WebRTCSessionDescription.h"
  17 #include "third_party/libjingle/source/talk/app/webrtc/peerconnectioninterface.h"
  18
  19 namespace blink {
  20 class WebFrame;
  21 class WebRTCICECandidate;
  22 class WebString;
  23 class WebRTCSessionDescription;
  24 class WebUserMediaRequest;
  25 }  // namespace blink
  26
  27 namespace webrtc {
  28 class DataChannelInterface;
  29 }  // namespace webrtc
  30
  31 namespace content {
  32 class RTCMediaConstraints;
  33 class RTCPeerConnectionHandler;
  34
  35 // This class collects data about each peer connection,
  36 // sends it to the browser process, and handles messages
  37 // from the browser process.
  38 class CONTENT_EXPORT PeerConnectionTracker
  39     : public RenderProcessObserver,
  40       public base::SupportsWeakPtr<PeerConnectionTracker> {
  41  public:
  42   PeerConnectionTracker();
  43   ~PeerConnectionTracker() override;
  44
  45   enum Source {
  46     SOURCE_LOCAL,
  47     SOURCE_REMOTE
  48   };
  49
  50   enum Action {
  51     ACTION_SET_LOCAL_DESCRIPTION,
  52     ACTION_SET_REMOTE_DESCRIPTION,
  53     ACTION_CREATE_OFFER,
  54     ACTION_CREATE_ANSWER
  55   };
  56
  57   // RenderProcessObserver implementation.
  58   bool OnControlMessageReceived(const IPC::Message& message) override;
  59
  60   //
  61   // The following methods send an update to the browser process when a
  62   // PeerConnection update happens. The caller should call the Track* methods
  63   // after calling RegisterPeerConnection and before calling
  64   // UnregisterPeerConnection, otherwise the Track* call has no effect.
  65   //
  66
  67   // Sends an update when a PeerConnection has been created in Javascript.
  68   // This should be called once and only once for each PeerConnection.
  69   // The |pc_handler| is the handler object associated with the PeerConnection,
  70   // the |servers| are the server configurations used to establish the
  71   // connection, the |constraints| are the media constraints used to initialize
  72   // the PeerConnection, the |frame| is the WebFrame object representing the
  73   // page in which the PeerConnection is created.
  74   void RegisterPeerConnection(
  75       RTCPeerConnectionHandler* pc_handler,
  76       const webrtc::PeerConnectionInterface::RTCConfiguration& config,
  77       const RTCMediaConstraints& constraints,
  78       const blink::WebFrame* frame);
  79
  80   // Sends an update when a PeerConnection has been destroyed.
  81   virtual void UnregisterPeerConnection(RTCPeerConnectionHandler* pc_handler);
  82
  83   // Sends an update when createOffer/createAnswer has been called.
  84   // The |pc_handler| is the handler object associated with the PeerConnection,
  85   // the |constraints| is the media constraints used to create the offer/answer.
  86   virtual void TrackCreateOffer(RTCPeerConnectionHandler* pc_handler,
  87                                 const RTCMediaConstraints& constraints);
  88   virtual void TrackCreateAnswer(RTCPeerConnectionHandler* pc_handler,
  89                                  const RTCMediaConstraints& constraints);
  90
  91   // Sends an update when setLocalDescription or setRemoteDescription is called.
  92   virtual void TrackSetSessionDescription(
  93       RTCPeerConnectionHandler* pc_handler,
  94       const std::string& sdp, const std::string& type, Source source);
  95
  96   // Sends an update when Ice candidates are updated.
  97   virtual void TrackUpdateIce(
  98       RTCPeerConnectionHandler* pc_handler,
  99       const webrtc::PeerConnectionInterface::RTCConfiguration& config,
 100       const RTCMediaConstraints& options);
 101
 102   // Sends an update when an Ice candidate is added.
 103   virtual void TrackAddIceCandidate(
 104       RTCPeerConnectionHandler* pc_handler,
 105       const blink::WebRTCICECandidate& candidate,
 106       Source source,
 107       bool succeeded);
 108
 109   // Sends an update when a media stream is added.
 110   virtual void TrackAddStream(
 111       RTCPeerConnectionHandler* pc_handler,
 112       const blink::WebMediaStream& stream, Source source);
 113
 114   // Sends an update when a media stream is removed.
 115   virtual void TrackRemoveStream(
 116       RTCPeerConnectionHandler* pc_handler,
 117       const blink::WebMediaStream& stream, Source source);
 118
 119   // Sends an update when a DataChannel is created.
 120   virtual void TrackCreateDataChannel(
 121       RTCPeerConnectionHandler* pc_handler,
 122       const webrtc::DataChannelInterface* data_channel, Source source);
 123
 124   // Sends an update when a PeerConnection has been stopped.
 125   virtual void TrackStop(RTCPeerConnectionHandler* pc_handler);
 126
 127   // Sends an update when the signaling state of a PeerConnection has changed.
 128   virtual void TrackSignalingStateChange(
 129       RTCPeerConnectionHandler* pc_handler,
 130       blink::WebRTCPeerConnectionHandlerClient::SignalingState state);
 131
 132   // Sends an update when the Ice connection state
 133   // of a PeerConnection has changed.
 134   virtual void TrackIceConnectionStateChange(
 135       RTCPeerConnectionHandler* pc_handler,
 136       blink::WebRTCPeerConnectionHandlerClient::ICEConnectionState state);
 137
 138   // Sends an update when the Ice gathering state
 139   // of a PeerConnection has changed.
 140   virtual void TrackIceGatheringStateChange(
 141       RTCPeerConnectionHandler* pc_handler,
 142       blink::WebRTCPeerConnectionHandlerClient::ICEGatheringState state);
 143
 144   // Sends an update when the SetSessionDescription or CreateOffer or
 145   // CreateAnswer callbacks are called.
 146   virtual void TrackSessionDescriptionCallback(
 147       RTCPeerConnectionHandler* pc_handler, Action action,
 148       const std::string& type, const std::string& value);
 149
 150   // Sends an update when onRenegotiationNeeded is called.
 151   virtual void TrackOnRenegotiationNeeded(RTCPeerConnectionHandler* pc_handler);
 152
 153   // Sends an update when a DTMFSender is created.
 154   virtual void TrackCreateDTMFSender(
 155       RTCPeerConnectionHandler* pc_handler,
 156       const blink::WebMediaStreamTrack& track);
 157
 158   // Sends an update when getUserMedia is called.
 159   virtual void TrackGetUserMedia(
 160       const blink::WebUserMediaRequest& user_media_request);
 161
 162  private:
 163   // Assign a local ID to a peer connection so that the browser process can
 164   // uniquely identify a peer connection in the renderer process.
 165   int GetNextLocalID();
 166
 167   // IPC Message handler for getting all stats.
 168   void OnGetAllStats();
 169
 170   // Called when the browser process reports a suspend event from the OS.
 171   void OnSuspend();
 172
 173   void SendPeerConnectionUpdate(RTCPeerConnectionHandler* pc_handler,
 174                                 const std::string& callback_type,
 175                                 const std::string& value);
 176
 177   // This map stores the local ID assigned to each RTCPeerConnectionHandler.
 178   typedef std::map<RTCPeerConnectionHandler*, int> PeerConnectionIdMap;
 179   PeerConnectionIdMap peer_connection_id_map_;
 180
 181   // This keeps track of the next available local ID.
 182   int next_lid_;
 183   base::ThreadChecker main_thread_;
 184
 185   DISALLOW_COPY_AND_ASSIGN(PeerConnectionTracker);
 186 };
 187
 188 }  // namespace content
 189
 190 #endif  // CONTENT_RENDERER_MEDIA_PEERCONNECTION_TRACKER_H_