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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 talk_base { | |
18 class Thread; | |
19 } | |
20 | |
21 class MediaStreamDependencyFactory; | |
22 class MediaStreamImpl; | |
23 | |
24 // PeerConnectionHandler is a delegate for the PeerConnection API messages going | |
25 // between WebKit and native PeerConnection in libjingle. It's owned by | |
26 // MediaStreamImpl. | |
27 class PeerConnectionHandler | |
28 : public WebKit::WebPeerConnectionHandler, | |
29 public webrtc::PeerConnectionObserver { | |
30 public: | |
31 PeerConnectionHandler( | |
32 WebKit::WebPeerConnectionHandlerClient* client, | |
33 MediaStreamImpl* msi, | |
34 MediaStreamDependencyFactory* dependency_factory, | |
35 talk_base::Thread* signaling_thread); | |
36 virtual ~PeerConnectionHandler(); | |
37 | |
38 // WebKit::WebPeerConnectionHandler implementation | |
39 virtual void initialize( | |
40 const WebKit::WebString& serverConfiguration, | |
tommi (sloooow) - chröme
2011/11/08 12:27:24
fix variable names
Henrik Grunell
2011/11/08 22:06:41
Done.
| |
41 const WebKit::WebSecurityOrigin&) OVERRIDE; | |
tommi (sloooow) - chröme
2011/11/08 12:27:24
and add variable names where missing
Henrik Grunell
2011/11/08 22:06:41
Done.
| |
42 virtual void produceInitialOffer( | |
43 const WebKit::WebVector<WebKit::WebMediaStreamDescriptor>& | |
44 pendingAddStreams) OVERRIDE; | |
45 virtual void handleInitialOffer(const WebKit::WebString& sdp) OVERRIDE; | |
46 virtual void processSDP(const WebKit::WebString& sdp) OVERRIDE; | |
47 virtual void processPendingStreams( | |
48 const WebKit::WebVector<WebKit::WebMediaStreamDescriptor>& | |
49 pendingAddStreams, | |
50 const WebKit::WebVector<WebKit::WebMediaStreamDescriptor>& | |
51 pendingRemoveStreams) OVERRIDE; | |
52 virtual void sendDataStreamMessage(const char* data, size_t length) OVERRIDE; | |
53 virtual void stop() OVERRIDE; | |
54 | |
55 // webrtc::PeerConnectionObserver implementation | |
56 virtual void OnSignalingMessage(const std::string& msg) OVERRIDE; | |
57 virtual void OnAddStream(const std::string& stream_id, bool video) OVERRIDE; | |
58 virtual void OnRemoveStream( | |
59 const std::string& stream_id, | |
60 bool video) OVERRIDE; | |
61 | |
62 private: | |
63 FRIEND_TEST(PeerConnectionHandlerTest, Basic); | |
64 | |
65 void AddStream(const std::string label); | |
66 void OnAddStreamCallback(const std::string& stream_label); | |
67 void OnRemoveStreamCallback(const std::string& stream_label); | |
68 | |
69 // The controller_ is valid for the lifetime of the underlying | |
70 // WebCore::WebMediaStreamController. shutdown() is invoked when the | |
71 // controller is destroyed. Additionally, MediaStreamImpl has the same | |
72 // lifetime as the controller since it is owned by RenderView. | |
73 // scoped_ptr<WebKit::WebMediaStreamController> controller_; | |
74 | |
75 // TODO(grunell): Check corresponding behavior for client_ in new WebKit | |
76 // implementation. | |
77 WebKit::WebPeerConnectionHandlerClient* client_; | |
78 | |
79 // TODO(grunell): Better name. | |
tommi (sloooow) - chröme
2011/11/08 12:27:24
address before checkin?
Henrik Grunell
2011/11/08 22:06:41
Done.
| |
80 MediaStreamImpl* msi_; | |
81 | |
82 // dependency_factory_ is a weak pointer, and is valid for the lifetime of | |
83 // MediaStreamImpl. | |
84 MediaStreamDependencyFactory* dependency_factory_; | |
85 | |
86 // native_peer_connection_ is the native PeerConnection object, | |
87 // it handles the ICE processing and media engine. | |
88 scoped_ptr<webrtc::PeerConnection> native_peer_connection_; | |
89 | |
90 scoped_refptr<base::MessageLoopProxy> message_loop_proxy_; | |
91 | |
92 talk_base::Thread* signaling_thread_; | |
93 | |
94 // Currently, a stream in WebKit has audio and/or video and has one label. | |
95 // Local and remote streams have different labels. | |
96 // In native PeerConnection, a stream has audio or video (not both), and they | |
97 // have separate labels. A remote stream has the same label as the | |
98 // corresponding local stream. Hence the workarounds in the implementation to | |
99 // handle this. It could look like this: | |
100 // WebKit: Local, audio and video: label "foo". | |
101 // Remote, audio and video: label "foo-remote". | |
102 // Libjingle: Local and remote, audio: label "foo-audio". | |
103 // Local and remote, video: label "foo". | |
104 // TODO(grunell): This shall be removed or changed when native PeerConnection | |
105 // has been updated to closer follow the specification. | |
106 std::string local_label_; // Label used in WebKit | |
107 std::string remote_label_; // Label used in WebKit | |
108 | |
109 // Call states. Possible transitions: | |
110 // NOT_STARTED -> INITIATING -> SENDING_AND_RECEIVING | |
111 // NOT_STARTED -> RECEIVING | |
112 // RECEIVING -> NOT_STARTED | |
113 // RECEIVING -> SENDING_AND_RECEIVING | |
114 // SENDING_AND_RECEIVING -> NOT_STARTED | |
115 // Note that when in state SENDING_AND_RECEIVING, the other side may or may | |
116 // not send media. Thus, this state does not necessarily mean full duplex. | |
117 // TODO(grunell): This shall be removed or changed when native PeerConnection | |
118 // has been updated to closer follow the specification. | |
119 enum CallState { | |
120 NOT_STARTED, | |
121 INITIATING, | |
122 RECEIVING, | |
123 SENDING_AND_RECEIVING | |
124 }; | |
125 CallState call_state_; | |
126 | |
127 DISALLOW_COPY_AND_ASSIGN(PeerConnectionHandler); | |
128 }; | |
129 | |
130 #endif // CONTENT_RENDERER_MEDIA_PEER_CONNECTION_HANDLER_H_ | |
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