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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_VIDEO_SOURCE_HANDLER_H_ | |
6 #define CONTENT_RENDERER_MEDIA_VIDEO_SOURCE_HANDLER_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/compiler_specific.h" | |
11 #include "base/memory/ref_counted.h" | |
12 #include "base/memory/scoped_ptr.h" | |
13 #include "base/synchronization/lock.h" | |
14 #include "content/common/content_export.h" | |
15 #include "content/renderer/media/media_stream_registry_interface.h" | |
16 #include "third_party/libjingle/source/talk/app/webrtc/videosourceinterface.h" | |
17 #include "third_party/libjingle/source/talk/media/base/videoframe.h" | |
18 #include "third_party/libjingle/source/talk/media/base/videorenderer.h" | |
19 #include "third_party/WebKit/Source/Platform/chromium/public/WebMediaStream.h" | |
20 | |
21 namespace content { | |
22 | |
23 class MediaStreamDependencyFactory; | |
24 class MediaStreamRegistryInterface; | |
25 | |
26 // Interface used by the effects pepper plugin to get captured frame | |
27 // from the video track. | |
28 class CONTENT_EXPORT FrameReaderInterface { | |
29 public: | |
30 // The ownership of the |frame| transfers to the caller. So the caller must | |
31 // release |frame| when done with it. | |
32 virtual bool GetFrame(cricket::VideoFrame** frame) = 0; | |
wjia(left Chromium)
2013/04/30 18:32:11
Any reason for pull model here? How does the plugi
Ronghua Wu (Left Chromium)
2013/04/30 22:42:17
I asked the same question in the pepper host cl, b
dmichael (off chromium)
2013/04/30 23:05:39
Either model is fine w.r.t. how you hook it up to
Ronghua Wu (Left Chromium)
2013/05/01 04:07:31
Thanks David.
If I understand correctly, for this
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33 | |
34 protected: | |
35 virtual ~FrameReaderInterface() {} | |
36 }; | |
37 | |
38 // PpFrameReader implements cricket::VideoRenderer so that it can be attached | |
39 // to native video track's video source. It also implements | |
40 // FrameReaderInterface, which will be used by the effects pepper plugin to | |
41 // get the captured frame. | |
42 class CONTENT_EXPORT PpFrameReader | |
43 : public NON_EXPORTED_BASE(cricket::VideoRenderer), | |
44 public FrameReaderInterface { | |
45 public: | |
46 PpFrameReader(); | |
47 virtual ~PpFrameReader(); | |
48 | |
49 // Implements VideoRenderer. | |
50 virtual bool SetSize(int width, int height, int reserved) OVERRIDE; | |
51 virtual bool RenderFrame(const cricket::VideoFrame* frame) OVERRIDE; | |
52 | |
53 // Implements FrameReaderInterface. | |
54 virtual bool GetFrame(cricket::VideoFrame** frame) OVERRIDE; | |
55 | |
56 private: | |
57 scoped_ptr<cricket::VideoFrame> last_frame_; | |
58 base::Lock lock_; | |
59 }; | |
60 | |
61 // VideoSourceHandler is a glue class between the webrtc MediaStream and | |
62 // the effects pepper plugin host. | |
63 class CONTENT_EXPORT VideoSourceHandler { | |
64 public: | |
65 VideoSourceHandler(MediaStreamDependencyFactory* factory, | |
66 MediaStreamRegistryInterface* registry); | |
67 bool Open(const std::string& url, FrameReaderInterface** frame_reader); | |
68 bool Close(const std::string& url, FrameReaderInterface* frame_reader); | |
wjia(left Chromium)
2013/04/30 18:32:11
Please add detailed comments for public API functi
Ronghua Wu (Left Chromium)
2013/04/30 22:42:17
Done.
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69 | |
70 private: | |
71 scoped_refptr<webrtc::VideoSourceInterface> GetFirstVideoSource( | |
72 const std::string& url); | |
73 | |
74 MediaStreamDependencyFactory* factory_; | |
75 MediaStreamRegistryInterface* registry_; | |
76 }; | |
77 | |
78 } // namespace content | |
79 | |
80 #endif // CONTENT_RENDERER_MEDIA_VIDEO_SOURCE_HANDLER_H_ | |
81 | |
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