1 // Copyright (c) 2011 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.
5 // This class chooses a capture interval so as to limit CPU usage to not exceed
6 // a specified %age. It bases this on the CPU usage of recent capture and encode
7 // operations, and on the number of available CPUs.
9 #ifndef REMOTING_HOST_CAPTURE_SCHEDULER_H_
10 #define REMOTING_HOST_CAPTURE_SCHEDULER_H_
12 #include "base/time/time.h"
13 #include "remoting/base/running_average.h"
17 class CaptureScheduler
{
22 // Returns the time to wait after initiating a capture before triggering
24 base::TimeDelta
NextCaptureDelay();
26 // Records time spent on capturing and encoding.
27 void RecordCaptureTime(base::TimeDelta capture_time
);
28 void RecordEncodeTime(base::TimeDelta encode_time
);
30 // Sets minimum interval between frames.
31 void set_minimum_interval(base::TimeDelta minimum_interval
) {
32 minimum_interval_
= minimum_interval
;
35 // Overrides the number of processors for testing.
36 void SetNumOfProcessorsForTest(int num_of_processors
);
39 base::TimeDelta minimum_interval_
;
40 int num_of_processors_
;
41 RunningAverage capture_time_
;
42 RunningAverage encode_time_
;
44 DISALLOW_COPY_AND_ASSIGN(CaptureScheduler
);
47 } // namespace remoting
49 #endif // REMOTING_HOST_CAPTURE_SCHEDULER_H_