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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 #include "config.h" | 5 #include "config.h" |
6 | 6 |
7 #include "CCFrameRateCounter.h" | 7 #include "CCFrameRateCounter.h" |
8 | 8 |
9 #include <cmath> | 9 #include <cmath> |
10 | 10 |
11 #include "CCProxy.h" | 11 #include "cc/proxy.h" |
12 #include <public/Platform.h> | 12 #include <public/Platform.h> |
13 | 13 |
14 namespace cc { | 14 namespace cc { |
15 | 15 |
16 const double CCFrameRateCounter::kFrameTooFast = 1.0 / 70.0; // measured in seco
nds | 16 const double CCFrameRateCounter::kFrameTooFast = 1.0 / 70.0; // measured in seco
nds |
17 const double CCFrameRateCounter::kFrameTooSlow = 1.0 / 12.0; | 17 const double CCFrameRateCounter::kFrameTooSlow = 1.0 / 12.0; |
18 const double CCFrameRateCounter::kDroppedFrameTime = 1.0 / 50.0; | 18 const double CCFrameRateCounter::kDroppedFrameTime = 1.0 / 50.0; |
19 | 19 |
20 // safeMod works on -1, returning m-1 in that case. | 20 // safeMod works on -1, returning m-1 in that case. |
21 static inline int safeMod(int number, int modulus) | 21 static inline int safeMod(int number, int modulus) |
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126 | 126 |
127 base::TimeTicks CCFrameRateCounter::timeStampOfRecentFrame(int n) | 127 base::TimeTicks CCFrameRateCounter::timeStampOfRecentFrame(int n) |
128 { | 128 { |
129 ASSERT(n >= 0 && n < kTimeStampHistorySize); | 129 ASSERT(n >= 0 && n < kTimeStampHistorySize); |
130 int desiredIndex = (frameIndex(m_currentFrameNumber) + n) % kTimeStampHistor
ySize; | 130 int desiredIndex = (frameIndex(m_currentFrameNumber) + n) % kTimeStampHistor
ySize; |
131 return m_timeStampHistory[desiredIndex]; | 131 return m_timeStampHistory[desiredIndex]; |
132 } | 132 } |
133 | 133 |
134 } // namespace cc | 134 } // namespace cc |
135 | 135 |
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