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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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_HOST_VIDEO_SCHEDULER_H_ | 5 #ifndef REMOTING_HOST_VIDEO_SCHEDULER_H_ |
6 #define REMOTING_HOST_VIDEO_SCHEDULER_H_ | 6 #define REMOTING_HOST_VIDEO_SCHEDULER_H_ |
7 | 7 |
8 #include <vector> | 8 #include <vector> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
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22 class SingleThreadTaskRunner; | 22 class SingleThreadTaskRunner; |
23 } // namespace base | 23 } // namespace base |
24 | 24 |
25 namespace remoting { | 25 namespace remoting { |
26 | 26 |
27 class CaptureData; | 27 class CaptureData; |
28 class CursorShapeInfo; | 28 class CursorShapeInfo; |
29 class VideoFrameCapturer; | 29 class VideoFrameCapturer; |
30 | 30 |
31 namespace protocol { | 31 namespace protocol { |
32 class ClientStub; | |
33 class CursorShapeInfo; | 32 class CursorShapeInfo; |
| 33 class CursorShapeStub; |
34 class VideoStub; | 34 class VideoStub; |
35 } // namespace protocol | 35 } // namespace protocol |
36 | 36 |
37 // Class responsible for scheduling frame captures from a VideoFrameCapturer, | 37 // Class responsible for scheduling frame captures from a VideoFrameCapturer, |
38 // delivering them to a VideoEncoder to encode, and finally passing the encoded | 38 // delivering them to a VideoEncoder to encode, and finally passing the encoded |
39 // video packets to the specified VideoStub to send on the network. | 39 // video packets to the specified VideoStub to send on the network. |
40 // | 40 // |
41 // THREADING | 41 // THREADING |
42 // | 42 // |
43 // This class is supplied TaskRunners to use for capture, encode and network | 43 // This class is supplied TaskRunners to use for capture, encode and network |
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77 // supplied TaskRunners. Video and cursor shape updates will be pumped to | 77 // supplied TaskRunners. Video and cursor shape updates will be pumped to |
78 // |video_stub| and |client_stub|, which must remain valid until Stop() is | 78 // |video_stub| and |client_stub|, which must remain valid until Stop() is |
79 // called. |capturer| is used to capture frames and must remain valid until | 79 // called. |capturer| is used to capture frames and must remain valid until |
80 // the |done_task| supplied to Stop() is executed. | 80 // the |done_task| supplied to Stop() is executed. |
81 static scoped_refptr<VideoScheduler> Create( | 81 static scoped_refptr<VideoScheduler> Create( |
82 scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner, | 82 scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner, |
83 scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner, | 83 scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner, |
84 scoped_refptr<base::SingleThreadTaskRunner> network_task_runner, | 84 scoped_refptr<base::SingleThreadTaskRunner> network_task_runner, |
85 VideoFrameCapturer* capturer, | 85 VideoFrameCapturer* capturer, |
86 scoped_ptr<VideoEncoder> encoder, | 86 scoped_ptr<VideoEncoder> encoder, |
87 protocol::ClientStub* client_stub, | 87 protocol::CursorShapeStub* cursor_stub, |
88 protocol::VideoStub* video_stub); | 88 protocol::VideoStub* video_stub); |
89 | 89 |
90 // VideoFrameCapturer::Delegate implementation. | 90 // VideoFrameCapturer::Delegate implementation. |
91 virtual void OnCaptureCompleted( | 91 virtual void OnCaptureCompleted( |
92 scoped_refptr<CaptureData> capture_data) OVERRIDE; | 92 scoped_refptr<CaptureData> capture_data) OVERRIDE; |
93 virtual void OnCursorShapeChanged( | 93 virtual void OnCursorShapeChanged( |
94 scoped_ptr<MouseCursorShape> cursor_shape) OVERRIDE; | 94 scoped_ptr<MouseCursorShape> cursor_shape) OVERRIDE; |
95 | 95 |
96 // Stop scheduling frame captures. |done_task| is executed on the network | 96 // Stop scheduling frame captures. |done_task| is executed on the network |
97 // thread when capturing has stopped. This object cannot be re-used once | 97 // thread when capturing has stopped. This object cannot be re-used once |
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108 | 108 |
109 private: | 109 private: |
110 friend class base::RefCountedThreadSafe<VideoScheduler>; | 110 friend class base::RefCountedThreadSafe<VideoScheduler>; |
111 | 111 |
112 VideoScheduler( | 112 VideoScheduler( |
113 scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner, | 113 scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner, |
114 scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner, | 114 scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner, |
115 scoped_refptr<base::SingleThreadTaskRunner> network_task_runner, | 115 scoped_refptr<base::SingleThreadTaskRunner> network_task_runner, |
116 VideoFrameCapturer* capturer, | 116 VideoFrameCapturer* capturer, |
117 scoped_ptr<VideoEncoder> encoder, | 117 scoped_ptr<VideoEncoder> encoder, |
118 protocol::ClientStub* client_stub, | 118 protocol::CursorShapeStub* cursor_stub, |
119 protocol::VideoStub* video_stub); | 119 protocol::VideoStub* video_stub); |
120 virtual ~VideoScheduler(); | 120 virtual ~VideoScheduler(); |
121 | 121 |
122 // Capturer thread ---------------------------------------------------------- | 122 // Capturer thread ---------------------------------------------------------- |
123 | 123 |
124 // Starts the capturer on the capture thread. | 124 // Starts the capturer on the capture thread. |
125 void StartOnCaptureThread(); | 125 void StartOnCaptureThread(); |
126 | 126 |
127 // Stops scheduling frame captures on the capture thread, and posts | 127 // Stops scheduling frame captures on the capture thread, and posts |
128 // |done_task| to the network thread when done. | 128 // |done_task| to the network thread when done. |
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166 scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_; | 166 scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_; |
167 | 167 |
168 // Used to capture frames. Always accessed on the capture thread. | 168 // Used to capture frames. Always accessed on the capture thread. |
169 VideoFrameCapturer* capturer_; | 169 VideoFrameCapturer* capturer_; |
170 | 170 |
171 // Used to encode captured frames. Always accessed on the encode thread. | 171 // Used to encode captured frames. Always accessed on the encode thread. |
172 scoped_ptr<VideoEncoder> encoder_; | 172 scoped_ptr<VideoEncoder> encoder_; |
173 | 173 |
174 // Interfaces through which video frames and cursor shapes are passed to the | 174 // Interfaces through which video frames and cursor shapes are passed to the |
175 // client. These members are always accessed on the network thread. | 175 // client. These members are always accessed on the network thread. |
176 protocol::ClientStub* cursor_stub_; | 176 protocol::CursorShapeStub* cursor_stub_; |
177 protocol::VideoStub* video_stub_; | 177 protocol::VideoStub* video_stub_; |
178 | 178 |
179 // Timer used to schedule CaptureNextFrame(). | 179 // Timer used to schedule CaptureNextFrame(). |
180 scoped_ptr<base::OneShotTimer<VideoScheduler> > capture_timer_; | 180 scoped_ptr<base::OneShotTimer<VideoScheduler> > capture_timer_; |
181 | 181 |
182 // Count the number of recordings (i.e. capture or encode) happening. | 182 // Count the number of recordings (i.e. capture or encode) happening. |
183 int pending_captures_; | 183 int pending_captures_; |
184 | 184 |
185 // True if the previous scheduled capture was skipped. | 185 // True if the previous scheduled capture was skipped. |
186 bool did_skip_frame_; | 186 bool did_skip_frame_; |
187 | 187 |
188 // True if capture of video frames is paused. | 188 // True if capture of video frames is paused. |
189 bool is_paused_; | 189 bool is_paused_; |
190 | 190 |
191 // This is a number updated by client to trace performance. | 191 // This is a number updated by client to trace performance. |
192 int64 sequence_number_; | 192 int64 sequence_number_; |
193 | 193 |
194 // An object to schedule capturing. | 194 // An object to schedule capturing. |
195 CaptureScheduler scheduler_; | 195 CaptureScheduler scheduler_; |
196 | 196 |
197 DISALLOW_COPY_AND_ASSIGN(VideoScheduler); | 197 DISALLOW_COPY_AND_ASSIGN(VideoScheduler); |
198 }; | 198 }; |
199 | 199 |
200 } // namespace remoting | 200 } // namespace remoting |
201 | 201 |
202 #endif // REMOTING_HOST_VIDEO_SCHEDULER_H_ | 202 #endif // REMOTING_HOST_VIDEO_SCHEDULER_H_ |
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