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Side by Side Diff: remoting/protocol/capture_scheduler.h

Issue 1462063004: Move VideoFramePump to remoting/protocol (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years ago
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1 // Copyright (c) 2011 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_HOST_CAPTURE_SCHEDULER_H_ 5 #ifndef REMOTING_PROTOCOL_CAPTURE_SCHEDULER_H_
6 #define REMOTING_HOST_CAPTURE_SCHEDULER_H_ 6 #define REMOTING_PROTOCOL_CAPTURE_SCHEDULER_H_
7 7
8 #include "base/callback.h" 8 #include "base/callback.h"
9 #include "base/macros.h"
9 #include "base/threading/thread_checker.h" 10 #include "base/threading/thread_checker.h"
10 #include "base/time/tick_clock.h" 11 #include "base/time/tick_clock.h"
11 #include "base/time/time.h" 12 #include "base/time/time.h"
12 #include "base/timer/timer.h" 13 #include "base/timer/timer.h"
13 #include "remoting/base/running_average.h" 14 #include "remoting/base/running_average.h"
14 #include "remoting/protocol/video_feedback_stub.h" 15 #include "remoting/protocol/video_feedback_stub.h"
15 16
16 namespace remoting { 17 namespace remoting {
17 18
18 class VideoPacket; 19 class VideoPacket;
19 20
21 namespace protocol {
22
20 // CaptureScheduler is used by the VideoFramePump to schedule frame capturer, 23 // CaptureScheduler is used by the VideoFramePump to schedule frame capturer,
21 // taking into account capture delay, encoder delay, network bandwidth, etc. 24 // taking into account capture delay, encoder delay, network bandwidth, etc.
22 // It implements VideoFeedbackStub to receive frame acknowledgments from the 25 // It implements VideoFeedbackStub to receive frame acknowledgments from the
23 // client. 26 // client.
24 // 27 //
25 // It attempts to achieve the following goals when scheduling frames: 28 // It attempts to achieve the following goals when scheduling frames:
26 // - Keep round-trip latency as low a possible. 29 // - Keep round-trip latency as low a possible.
27 // - Parallelize capture, encode and transmission, to achieve frame rate as 30 // - Parallelize capture, encode and transmission, to achieve frame rate as
28 // close to the target of 30fps as possible. 31 // close to the target of 30fps as possible.
29 // - Limit CPU usage to 50%. 32 // - Limit CPU usage to 50%.
30 class CaptureScheduler : public protocol::VideoFeedbackStub { 33 class CaptureScheduler : public VideoFeedbackStub {
31 public: 34 public:
32 explicit CaptureScheduler(const base::Closure& capture_closure); 35 explicit CaptureScheduler(const base::Closure& capture_closure);
33 ~CaptureScheduler() override; 36 ~CaptureScheduler() override;
34 37
35 // Starts the scheduler. 38 // Starts the scheduler.
36 void Start(); 39 void Start();
37 40
38 // Pauses or unpauses the stream. 41 // Pauses or unpauses the stream.
39 void Pause(bool pause); 42 void Pause(bool pause);
40 43
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101 bool is_paused_; 104 bool is_paused_;
102 105
103 // Frame ID to be assigned to the next outgoing video frame. 106 // Frame ID to be assigned to the next outgoing video frame.
104 uint32_t next_frame_id_; 107 uint32_t next_frame_id_;
105 108
106 base::ThreadChecker thread_checker_; 109 base::ThreadChecker thread_checker_;
107 110
108 DISALLOW_COPY_AND_ASSIGN(CaptureScheduler); 111 DISALLOW_COPY_AND_ASSIGN(CaptureScheduler);
109 }; 112 };
110 113
114 } // namespace protocol
111 } // namespace remoting 115 } // namespace remoting
112 116
113 #endif // REMOTING_HOST_CAPTURE_SCHEDULER_H_ 117 #endif // REMOTING_PROTOCOL_CAPTURE_SCHEDULER_H_
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