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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_MEDIA_STREAM_SOURCE_OBSERVER_H_ | |
6 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_OBSERVER_H_ | |
7 | |
8 #include "base/compiler_specific.h" | |
9 #include "base/memory/ref_counted.h" | |
10 #include "base/threading/non_thread_safe.h" | |
11 #include "content/common/content_export.h" | |
12 #include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h" | |
13 #include "third_party/WebKit/Source/Platform/chromium/public/WebMediaStreamSourc e.h" | |
14 | |
15 namespace content { | |
16 | |
17 // MediaStreamSourceObserver listens to events on MediaSourceInterface and | |
18 // notify WebKit. It will be owned by MediaStreamSourceExtraData. | |
19 // | |
20 // This will create circular reference to MediaStreamSource: | |
21 // MediaStreamSource -> MediaStreamSourceExtraData -> MediaStreamSourceObserver | |
22 // -> MediaStreamSource | |
23 // Currently, it relies on manually releasing the reference count, like what | |
24 // ~UserMediaRequestInfo() does. | |
25 // TODO(kcwu): fix the circular reference after ExtraData::Owner() is | |
26 // implemented, which let us get MediaStreamSource without increasing reference | |
27 // count. | |
28 class CONTENT_EXPORT MediaStreamSourceObserver | |
29 : NON_EXPORTED_BASE(public webrtc::ObserverInterface), | |
30 NON_EXPORTED_BASE(public base::NonThreadSafe) { | |
31 public: | |
32 MediaStreamSourceObserver(webrtc::MediaSourceInterface* webrtc_source, | |
33 const WebKit::WebMediaStreamSource& webkit_source); | |
perkj_chrome
2013/04/18 13:36:20
How about preparing for ExtraData::Owner() ?
c
| |
34 virtual ~MediaStreamSourceObserver(); | |
35 | |
36 // webrtc::ObserverInterface implementation. | |
37 virtual void OnChanged() OVERRIDE; | |
38 | |
39 private: | |
40 webrtc::MediaSourceInterface::SourceState state_; | |
41 scoped_refptr<webrtc::MediaSourceInterface> webrtc_source_; | |
42 WebKit::WebMediaStreamSource webkit_source_; | |
43 | |
44 DISALLOW_COPY_AND_ASSIGN(MediaStreamSourceObserver); | |
45 }; | |
46 | |
47 } // namespace content | |
48 | |
49 #endif // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_OBSERVER_H_ | |
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