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1 // Copyright (c) 2011 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/gtest_prod_util.h" | |
12 #include "base/memory/scoped_ptr.h" | |
13 #include "base/message_loop_proxy.h" | |
14 #include "third_party/libjingle/source/talk/app/webrtc/peerconnection.h" | |
15 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPeerConnectionHand ler.h" | |
16 | |
17 namespace cricket { | |
18 class HttpPortAllocator; | |
19 } | |
20 | |
21 namespace talk_base { | |
22 class Thread; | |
23 } | |
24 | |
25 class MediaStreamDependencyFactory; | |
26 class MediaStreamImpl; | |
27 | |
28 // PeerConnectionHandler is a delegate for the PeerConnection API messages going | |
29 // between WebKit and native PeerConnection in libjingle. It's owned by | |
30 // MediaStreamImpl. | |
31 class PeerConnectionHandler | |
32 : public WebKit::WebPeerConnectionHandler, | |
33 public webrtc::PeerConnectionObserver { | |
34 public: | |
35 PeerConnectionHandler( | |
36 WebKit::WebPeerConnectionHandlerClient* client, | |
37 MediaStreamImpl* msi, | |
38 MediaStreamDependencyFactory* dependency_factory, | |
39 talk_base::Thread* signaling_thread, | |
40 cricket::HttpPortAllocator* port_allocator); | |
41 virtual ~PeerConnectionHandler(); | |
42 | |
43 // Set the video renderer for the specified stream. | |
44 virtual bool SetVideoRenderer(const std::string& stream_label, | |
45 cricket::VideoRenderer* renderer); | |
46 | |
47 // WebKit::WebPeerConnectionHandler implementation | |
48 virtual void initialize( | |
49 const WebKit::WebString& server_configuration, | |
50 const WebKit::WebSecurityOrigin& security_origin) OVERRIDE; | |
51 virtual void produceInitialOffer( | |
52 const WebKit::WebVector<WebKit::WebMediaStreamDescriptor>& | |
53 pending_add_streams) OVERRIDE; | |
54 virtual void handleInitialOffer(const WebKit::WebString& sdp) OVERRIDE; | |
55 virtual void processSDP(const WebKit::WebString& sdp) OVERRIDE; | |
56 virtual void processPendingStreams( | |
57 const WebKit::WebVector<WebKit::WebMediaStreamDescriptor>& | |
58 pending_add_streams, | |
59 const WebKit::WebVector<WebKit::WebMediaStreamDescriptor>& | |
60 pending_remove_streams) OVERRIDE; | |
61 virtual void sendDataStreamMessage(const char* data, size_t length) OVERRIDE; | |
62 virtual void stop() OVERRIDE; | |
63 | |
64 // webrtc::PeerConnectionObserver implementation | |
65 virtual void OnSignalingMessage(const std::string& msg) OVERRIDE; | |
66 virtual void OnAddStream(const std::string& stream_id, bool video) OVERRIDE; | |
67 virtual void OnRemoveStream( | |
68 const std::string& stream_id, | |
69 bool video) OVERRIDE; | |
70 | |
71 private: | |
72 FRIEND_TEST(PeerConnectionHandlerTest, Basic); | |
scherkus (not reviewing)
2011/11/23 22:52:04
FRIEND_TEST_ALL_PREFIXES
Henrik Grunell
2011/11/24 11:32:59
Done.
| |
73 | |
74 void AddStream(const std::string label); | |
75 void OnAddStreamCallback(const std::string& stream_label); | |
76 void OnRemoveStreamCallback(const std::string& stream_label); | |
77 | |
78 // client_ is a weak pointer, and is valid until stop() has returned. | |
79 WebKit::WebPeerConnectionHandlerClient* client_; | |
80 | |
81 // media_stream_impl_ is a weak pointer, and is valid for the lifetime of this | |
82 // class. | |
83 MediaStreamImpl* media_stream_impl_; | |
84 | |
85 // dependency_factory_ is a weak pointer, and is valid for the lifetime of | |
86 // MediaStreamImpl. | |
87 MediaStreamDependencyFactory* dependency_factory_; | |
88 | |
89 // native_peer_connection_ is the native PeerConnection object, | |
90 // it handles the ICE processing and media engine. | |
91 scoped_ptr<webrtc::PeerConnection> native_peer_connection_; | |
92 | |
93 scoped_refptr<base::MessageLoopProxy> message_loop_proxy_; | |
94 | |
95 talk_base::Thread* signaling_thread_; | |
96 | |
97 cricket::HttpPortAllocator* port_allocator_; | |
98 | |
99 // Currently, a stream in WebKit has audio and/or video and has one label. | |
100 // Local and remote streams have different labels. | |
101 // In native PeerConnection, a stream has audio or video (not both), and they | |
102 // have separate labels. A remote stream has the same label as the | |
103 // corresponding local stream. Hence the workarounds in the implementation to | |
104 // handle this. It could look like this: | |
105 // WebKit: Local, audio and video: label "foo". | |
106 // Remote, audio and video: label "foo-remote". | |
107 // Libjingle: Local and remote, audio: label "foo-audio". | |
108 // Local and remote, video: label "foo". | |
109 // TODO(grunell): This shall be removed or changed when native PeerConnection | |
110 // has been updated to closer follow the specification. | |
111 std::string local_label_; // Label used in WebKit | |
112 std::string remote_label_; // Label used in WebKit | |
113 | |
114 // Call states. Possible transitions: | |
115 // NOT_STARTED -> INITIATING -> SENDING_AND_RECEIVING | |
116 // NOT_STARTED -> RECEIVING | |
117 // RECEIVING -> NOT_STARTED | |
118 // RECEIVING -> SENDING_AND_RECEIVING | |
119 // SENDING_AND_RECEIVING -> NOT_STARTED | |
120 // Note that when in state SENDING_AND_RECEIVING, the other side may or may | |
121 // not send media. Thus, this state does not necessarily mean full duplex. | |
122 // TODO(grunell): This shall be removed or changed when native PeerConnection | |
123 // has been updated to closer follow the specification. | |
124 enum CallState { | |
125 NOT_STARTED, | |
126 INITIATING, | |
127 RECEIVING, | |
128 SENDING_AND_RECEIVING | |
129 }; | |
130 CallState call_state_; | |
131 | |
132 DISALLOW_COPY_AND_ASSIGN(PeerConnectionHandler); | |
133 }; | |
134 | |
135 #endif // CONTENT_RENDERER_MEDIA_PEER_CONNECTION_HANDLER_H_ | |
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