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Side by Side Diff: cc/CCFrameRateCounter.h

Issue 10985088: cc: Switch it to use DISALLOW_COPY_AND_ASSIGN macro from base/ library. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: review Created 8 years, 2 months ago
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1 // Copyright 2012 The Chromium Authors. All rights reserved. 1 // Copyright 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 CCFrameRateCounter_h 5 #ifndef CCFrameRateCounter_h
6 #define CCFrameRateCounter_h 6 #define CCFrameRateCounter_h
7 7
8 #if USE(ACCELERATED_COMPOSITING) 8 #if USE(ACCELERATED_COMPOSITING)
9 9
10 #include <wtf/Noncopyable.h> 10 #include "base/basictypes.h"
11 #include <wtf/PassOwnPtr.h> 11 #include <wtf/PassOwnPtr.h>
12 12
13 namespace cc { 13 namespace cc {
14 14
15 // This class maintains a history of timestamps, and provides functionality to 15 // This class maintains a history of timestamps, and provides functionality to
16 // intelligently compute average frames per second (and standard deviation). 16 // intelligently compute average frames per second (and standard deviation).
17 class CCFrameRateCounter { 17 class CCFrameRateCounter {
18 WTF_MAKE_NONCOPYABLE(CCFrameRateCounter);
19 public: 18 public:
20 static PassOwnPtr<CCFrameRateCounter> create() 19 static PassOwnPtr<CCFrameRateCounter> create()
21 { 20 {
22 return adoptPtr(new CCFrameRateCounter()); 21 return adoptPtr(new CCFrameRateCounter());
23 } 22 }
24 23
25 void markBeginningOfFrame(double timestamp); 24 void markBeginningOfFrame(double timestamp);
26 void markEndOfFrame(); 25 void markEndOfFrame();
27 int currentFrameNumber() const { return m_currentFrameNumber; } 26 int currentFrameNumber() const { return m_currentFrameNumber; }
28 void getAverageFPSAndStandardDeviation(double& averageFPS, double& standardD eviation) const; 27 void getAverageFPSAndStandardDeviation(double& averageFPS, double& standardD eviation) const;
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55 // (naively) assume that it missed a screen refresh; that is, we dropped a f rame. 54 // (naively) assume that it missed a screen refresh; that is, we dropped a f rame.
56 // FIXME: Determine this threshold based on monitor refresh rate, crbug.com/ 138642. 55 // FIXME: Determine this threshold based on monitor refresh rate, crbug.com/ 138642.
57 static const double kDroppedFrameTime; 56 static const double kDroppedFrameTime;
58 57
59 static const int kTimeStampHistorySize = 120; 58 static const int kTimeStampHistorySize = 120;
60 59
61 int m_currentFrameNumber; 60 int m_currentFrameNumber;
62 double m_timeStampHistory[kTimeStampHistorySize]; 61 double m_timeStampHistory[kTimeStampHistorySize];
63 62
64 int m_droppedFrameCount; 63 int m_droppedFrameCount;
64
65 DISALLOW_COPY_AND_ASSIGN(CCFrameRateCounter);
65 }; 66 };
66 67
67 } // namespace cc 68 } // namespace cc
68 69
69 #endif // USE(ACCELERATED_COMPOSITING) 70 #endif // USE(ACCELERATED_COMPOSITING)
70 71
71 #endif 72 #endif
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