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| 1 // Copyright (c) 2012 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_PEER_CONNECTION_HANDLER_H_ |
| 6 #define CONTENT_RENDERER_MEDIA_PEER_CONNECTION_HANDLER_H_ |
| 7 |
| 8 #include <string> |
| 9 |
| 10 #include "base/basictypes.h" |
| 11 #include "base/compiler_specific.h" |
| 12 #include "base/gtest_prod_util.h" |
| 13 #include "base/memory/scoped_ptr.h" |
| 14 #include "base/message_loop_proxy.h" |
| 15 #include "content/common/content_export.h" |
| 16 #include "third_party/libjingle/source/talk/app/webrtc/peerconnection.h" |
| 17 #include "third_party/libjingle/source/talk/base/socketaddress.h" |
| 18 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebPeerConne
ctionHandler.h" |
| 19 |
| 20 namespace base { |
| 21 class Thread; |
| 22 class WaitableEvent; |
| 23 } |
| 24 |
| 25 namespace content { |
| 26 class IpcNetworkManager; |
| 27 class IpcPacketSocketFactory; |
| 28 class P2PSocketDispatcher; |
| 29 } |
| 30 |
| 31 namespace cricket { |
| 32 class PortAllocator; |
| 33 } |
| 34 |
| 35 namespace talk_base { |
| 36 class Thread; |
| 37 } |
| 38 |
| 39 class MediaStreamDependencyFactory; |
| 40 class MediaStreamImpl; |
| 41 |
| 42 // PeerConnectionHandler is a delegate for the PeerConnection API messages going |
| 43 // between WebKit and native PeerConnection in libjingle. It's owned by |
| 44 // MediaStreamImpl. |
| 45 class CONTENT_EXPORT PeerConnectionHandler |
| 46 : NON_EXPORTED_BASE(public WebKit::WebPeerConnectionHandler), |
| 47 NON_EXPORTED_BASE(public webrtc::PeerConnectionObserver) { |
| 48 public: |
| 49 PeerConnectionHandler( |
| 50 WebKit::WebPeerConnectionHandlerClient* client, |
| 51 MediaStreamImpl* msi, |
| 52 MediaStreamDependencyFactory* dependency_factory, |
| 53 talk_base::Thread* signaling_thread, |
| 54 content::P2PSocketDispatcher* socket_dispatcher, |
| 55 content::IpcNetworkManager* network_manager, |
| 56 content::IpcPacketSocketFactory* socket_factory); |
| 57 virtual ~PeerConnectionHandler(); |
| 58 |
| 59 // Set the video renderer for the specified stream. |
| 60 virtual bool SetVideoRenderer(const std::string& stream_label, |
| 61 cricket::VideoRenderer* renderer); |
| 62 |
| 63 // WebKit::WebPeerConnectionHandler implementation |
| 64 virtual void initialize( |
| 65 const WebKit::WebString& server_configuration, |
| 66 const WebKit::WebSecurityOrigin& security_origin) OVERRIDE; |
| 67 virtual void produceInitialOffer( |
| 68 const WebKit::WebVector<WebKit::WebMediaStreamDescriptor>& |
| 69 pending_add_streams) OVERRIDE; |
| 70 virtual void handleInitialOffer(const WebKit::WebString& sdp) OVERRIDE; |
| 71 virtual void processSDP(const WebKit::WebString& sdp) OVERRIDE; |
| 72 virtual void processPendingStreams( |
| 73 const WebKit::WebVector<WebKit::WebMediaStreamDescriptor>& |
| 74 pending_add_streams, |
| 75 const WebKit::WebVector<WebKit::WebMediaStreamDescriptor>& |
| 76 pending_remove_streams) OVERRIDE; |
| 77 virtual void sendDataStreamMessage(const char* data, size_t length) OVERRIDE; |
| 78 virtual void stop() OVERRIDE; |
| 79 |
| 80 // webrtc::PeerConnectionObserver implementation |
| 81 virtual void OnSignalingMessage(const std::string& msg) OVERRIDE; |
| 82 virtual void OnAddStream(const std::string& stream_id, bool video) OVERRIDE; |
| 83 virtual void OnRemoveStream( |
| 84 const std::string& stream_id, |
| 85 bool video) OVERRIDE; |
| 86 |
| 87 private: |
| 88 FRIEND_TEST_ALL_PREFIXES(PeerConnectionHandlerTest, Basic); |
| 89 |
| 90 void AddStream(const std::string label); |
| 91 void OnAddStreamCallback(const std::string& stream_label); |
| 92 void OnRemoveStreamCallback(const std::string& stream_label); |
| 93 |
| 94 // client_ is a weak pointer, and is valid until stop() has returned. |
| 95 WebKit::WebPeerConnectionHandlerClient* client_; |
| 96 |
| 97 // media_stream_impl_ is a weak pointer, and is valid for the lifetime of this |
| 98 // class. Calls to it must be done on the render thread. |
| 99 MediaStreamImpl* media_stream_impl_; |
| 100 |
| 101 // dependency_factory_ is a weak pointer, and is valid for the lifetime of |
| 102 // MediaStreamImpl. |
| 103 MediaStreamDependencyFactory* dependency_factory_; |
| 104 |
| 105 // native_peer_connection_ is the native PeerConnection object, |
| 106 // it handles the ICE processing and media engine. |
| 107 scoped_ptr<webrtc::PeerConnection> native_peer_connection_; |
| 108 |
| 109 scoped_refptr<base::MessageLoopProxy> message_loop_proxy_; |
| 110 |
| 111 talk_base::Thread* signaling_thread_; |
| 112 |
| 113 // socket_dispatcher_ is a weak reference, owned by RenderView. It's valid |
| 114 // for the lifetime of RenderView. |
| 115 content::P2PSocketDispatcher* socket_dispatcher_; |
| 116 |
| 117 // network_manager_ and socket_factory_ are a weak references, owned by |
| 118 // MediaStreamImpl. |
| 119 content::IpcNetworkManager* network_manager_; |
| 120 content::IpcPacketSocketFactory* socket_factory_; |
| 121 |
| 122 scoped_ptr<cricket::PortAllocator> port_allocator_; |
| 123 |
| 124 // Currently, a stream in WebKit has audio and/or video and has one label. |
| 125 // Local and remote streams have different labels. |
| 126 // In native PeerConnection, a stream has audio or video (not both), and they |
| 127 // have separate labels. A remote stream has the same label as the |
| 128 // corresponding local stream. Hence the workarounds in the implementation to |
| 129 // handle this. It could look like this: |
| 130 // WebKit: Local, audio and video: label "foo". |
| 131 // Remote, audio and video: label "foo-remote". |
| 132 // Native: Local and remote, audio: label "foo-audio". |
| 133 // Local and remote, video: label "foo". |
| 134 // TODO(grunell): This shall be removed or changed when native PeerConnection |
| 135 // has been updated to closer follow the specification. |
| 136 std::string local_label_; // Label used in WebKit |
| 137 std::string remote_label_; // Label used in WebKit |
| 138 |
| 139 // Call states. Possible transitions: |
| 140 // NOT_STARTED -> INITIATING -> SENDING_AND_RECEIVING |
| 141 // NOT_STARTED -> RECEIVING |
| 142 // RECEIVING -> NOT_STARTED |
| 143 // RECEIVING -> SENDING_AND_RECEIVING |
| 144 // SENDING_AND_RECEIVING -> NOT_STARTED |
| 145 // Note that when in state SENDING_AND_RECEIVING, the other side may or may |
| 146 // not send media. Thus, this state does not necessarily mean full duplex. |
| 147 // TODO(grunell): This shall be removed or changed when native PeerConnection |
| 148 // has been updated to closer follow the specification. |
| 149 enum CallState { |
| 150 NOT_STARTED, |
| 151 INITIATING, |
| 152 RECEIVING, |
| 153 SENDING_AND_RECEIVING |
| 154 }; |
| 155 CallState call_state_; |
| 156 |
| 157 DISALLOW_COPY_AND_ASSIGN(PeerConnectionHandler); |
| 158 }; |
| 159 |
| 160 #endif // CONTENT_RENDERER_MEDIA_PEER_CONNECTION_HANDLER_H_ |
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