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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef REMOTING_PROTOCOL_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_ | 5 #ifndef REMOTING_PROTOCOL_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_ |
6 #define REMOTING_PROTOCOL_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_ | 6 #define REMOTING_PROTOCOL_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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35 // This class controls the capture of video frames from the desktop and is used | 35 // This class controls the capture of video frames from the desktop and is used |
36 // to construct a VideoSource as part of the webrtc PeerConnection API. | 36 // to construct a VideoSource as part of the webrtc PeerConnection API. |
37 // WebrtcVideoCapturerAdapter acts as an adapter between webrtc::DesktopCapturer | 37 // WebrtcVideoCapturerAdapter acts as an adapter between webrtc::DesktopCapturer |
38 // and the cricket::VideoCapturer interface, which it implements. It is used | 38 // and the cricket::VideoCapturer interface, which it implements. It is used |
39 // to construct a cricket::VideoSource for a PeerConnection, to capture frames | 39 // to construct a cricket::VideoSource for a PeerConnection, to capture frames |
40 // of the desktop. As indicated in the base implementation, Start() and Stop() | 40 // of the desktop. As indicated in the base implementation, Start() and Stop() |
41 // should be called on the same thread. | 41 // should be called on the same thread. |
42 class WebrtcVideoCapturerAdapter : public cricket::VideoCapturer, | 42 class WebrtcVideoCapturerAdapter : public cricket::VideoCapturer, |
43 public webrtc::DesktopCapturer::Callback { | 43 public webrtc::DesktopCapturer::Callback { |
44 public: | 44 public: |
| 45 typedef base::Callback<void(const webrtc::DesktopSize& size)> SizeCallback; |
| 46 |
45 explicit WebrtcVideoCapturerAdapter( | 47 explicit WebrtcVideoCapturerAdapter( |
46 scoped_ptr<webrtc::DesktopCapturer> capturer); | 48 scoped_ptr<webrtc::DesktopCapturer> capturer); |
47 ~WebrtcVideoCapturerAdapter() override; | 49 ~WebrtcVideoCapturerAdapter() override; |
48 | 50 |
| 51 void SetSizeCallback(const SizeCallback& size_callback); |
| 52 |
49 // cricket::VideoCapturer implementation. | 53 // cricket::VideoCapturer implementation. |
50 bool GetBestCaptureFormat(const cricket::VideoFormat& desired, | 54 bool GetBestCaptureFormat(const cricket::VideoFormat& desired, |
51 cricket::VideoFormat* best_format) override; | 55 cricket::VideoFormat* best_format) override; |
52 cricket::CaptureState Start( | 56 cricket::CaptureState Start( |
53 const cricket::VideoFormat& capture_format) override; | 57 const cricket::VideoFormat& capture_format) override; |
54 bool Pause(bool pause) override; | 58 bool Pause(bool pause) override; |
55 void Stop() override; | 59 void Stop() override; |
56 bool IsRunning() override; | 60 bool IsRunning() override; |
57 bool IsScreencast() const override; | 61 bool IsScreencast() const override; |
58 bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override; | 62 bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override; |
59 | 63 |
60 private: | 64 private: |
61 // webrtc::DesktopCapturer::Callback implementation. | 65 // webrtc::DesktopCapturer::Callback implementation. |
62 webrtc::SharedMemory* CreateSharedMemory(size_t size) override; | 66 webrtc::SharedMemory* CreateSharedMemory(size_t size) override; |
63 void OnCaptureCompleted(webrtc::DesktopFrame* frame) override; | 67 void OnCaptureCompleted(webrtc::DesktopFrame* frame) override; |
64 | 68 |
65 // Kicks off the next frame capture using |desktop_capturer_|. The captured | 69 // Kicks off the next frame capture using |desktop_capturer_|. The captured |
66 // frame will be passed to OnCaptureCompleted(). | 70 // frame will be passed to OnCaptureCompleted(). |
67 void CaptureNextFrame(); | 71 void CaptureNextFrame(); |
68 | 72 |
69 base::ThreadChecker thread_checker_; | 73 base::ThreadChecker thread_checker_; |
70 | 74 |
71 scoped_ptr<webrtc::DesktopCapturer> desktop_capturer_; | 75 scoped_ptr<webrtc::DesktopCapturer> desktop_capturer_; |
72 | 76 |
| 77 SizeCallback size_callback_; |
| 78 |
73 // Timer to call CaptureNextFrame(). | 79 // Timer to call CaptureNextFrame(). |
74 scoped_ptr<base::RepeatingTimer> capture_timer_; | 80 scoped_ptr<base::RepeatingTimer> capture_timer_; |
75 | 81 |
76 // Video frame is kept between captures to avoid YUV conversion for static | 82 // Video frame is kept between captures to avoid YUV conversion for static |
77 // parts of the screen. | 83 // parts of the screen. |
78 scoped_ptr<cricket::VideoFrame> yuv_frame_; | 84 scoped_ptr<cricket::VideoFrame> yuv_frame_; |
79 | 85 |
80 bool capture_pending_ = false; | 86 bool capture_pending_ = false; |
81 | 87 |
82 DISALLOW_COPY_AND_ASSIGN(WebrtcVideoCapturerAdapter); | 88 DISALLOW_COPY_AND_ASSIGN(WebrtcVideoCapturerAdapter); |
83 }; | 89 }; |
84 | 90 |
85 } // namespace protocol | 91 } // namespace protocol |
86 } // namespace remoting | 92 } // namespace remoting |
87 | 93 |
88 #endif // REMOTING_PROTOCOL_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_ | 94 #endif // REMOTING_PROTOCOL_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_ |
89 | 95 |
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