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1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 2011 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 "CCFrameRateController.h" | 7 #include "CCFrameRateController.h" |
8 | 8 |
| 9 #include "base/logging.h" |
9 #include "CCDelayBasedTimeSource.h" | 10 #include "CCDelayBasedTimeSource.h" |
10 #include "CCTimeSource.h" | 11 #include "CCTimeSource.h" |
11 #include "base/debug/trace_event.h" | 12 #include "base/debug/trace_event.h" |
12 #include <wtf/CurrentTime.h> | 13 #include <wtf/CurrentTime.h> |
13 | 14 |
14 namespace { | 15 namespace { |
15 | 16 |
16 // This will be the maximum number of pending frames unless | 17 // This will be the maximum number of pending frames unless |
17 // CCFrameRateController::setMaxFramesPending is called. | 18 // CCFrameRateController::setMaxFramesPending is called. |
18 const int defaultMaxFramesPending = 2; | 19 const int defaultMaxFramesPending = 2; |
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81 else { | 82 else { |
82 if (active) | 83 if (active) |
83 postManualTick(); | 84 postManualTick(); |
84 else | 85 else |
85 m_manualTicker->stop(); | 86 m_manualTicker->stop(); |
86 } | 87 } |
87 } | 88 } |
88 | 89 |
89 void CCFrameRateController::setMaxFramesPending(int maxFramesPending) | 90 void CCFrameRateController::setMaxFramesPending(int maxFramesPending) |
90 { | 91 { |
91 ASSERT(maxFramesPending > 0); | 92 DCHECK(maxFramesPending > 0); |
92 m_maxFramesPending = maxFramesPending; | 93 m_maxFramesPending = maxFramesPending; |
93 } | 94 } |
94 | 95 |
95 void CCFrameRateController::setTimebaseAndInterval(base::TimeTicks timebase, bas
e::TimeDelta interval) | 96 void CCFrameRateController::setTimebaseAndInterval(base::TimeTicks timebase, bas
e::TimeDelta interval) |
96 { | 97 { |
97 if (m_isTimeSourceThrottling) | 98 if (m_isTimeSourceThrottling) |
98 m_timeSource->setTimebaseAndInterval(timebase, interval); | 99 m_timeSource->setTimebaseAndInterval(timebase, interval); |
99 } | 100 } |
100 | 101 |
101 void CCFrameRateController::setSwapBuffersCompleteSupported(bool supported) | 102 void CCFrameRateController::setSwapBuffersCompleteSupported(bool supported) |
102 { | 103 { |
103 m_swapBuffersCompleteSupported = supported; | 104 m_swapBuffersCompleteSupported = supported; |
104 } | 105 } |
105 | 106 |
106 void CCFrameRateController::onTimerTick() | 107 void CCFrameRateController::onTimerTick() |
107 { | 108 { |
108 ASSERT(m_active); | 109 DCHECK(m_active); |
109 | 110 |
110 // Check if we have too many frames in flight. | 111 // Check if we have too many frames in flight. |
111 bool throttled = m_numFramesPending >= m_maxFramesPending; | 112 bool throttled = m_numFramesPending >= m_maxFramesPending; |
112 | 113 |
113 if (m_client) | 114 if (m_client) |
114 m_client->vsyncTick(throttled); | 115 m_client->vsyncTick(throttled); |
115 | 116 |
116 if (m_swapBuffersCompleteSupported && !m_isTimeSourceThrottling && m_numFram
esPending < m_maxFramesPending) | 117 if (m_swapBuffersCompleteSupported && !m_isTimeSourceThrottling && m_numFram
esPending < m_maxFramesPending) |
117 postManualTick(); | 118 postManualTick(); |
118 } | 119 } |
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131 void CCFrameRateController::didBeginFrame() | 132 void CCFrameRateController::didBeginFrame() |
132 { | 133 { |
133 if (m_swapBuffersCompleteSupported) | 134 if (m_swapBuffersCompleteSupported) |
134 m_numFramesPending++; | 135 m_numFramesPending++; |
135 else if (!m_isTimeSourceThrottling) | 136 else if (!m_isTimeSourceThrottling) |
136 postManualTick(); | 137 postManualTick(); |
137 } | 138 } |
138 | 139 |
139 void CCFrameRateController::didFinishFrame() | 140 void CCFrameRateController::didFinishFrame() |
140 { | 141 { |
141 ASSERT(m_swapBuffersCompleteSupported); | 142 DCHECK(m_swapBuffersCompleteSupported); |
142 | 143 |
143 m_numFramesPending--; | 144 m_numFramesPending--; |
144 if (!m_isTimeSourceThrottling) | 145 if (!m_isTimeSourceThrottling) |
145 postManualTick(); | 146 postManualTick(); |
146 } | 147 } |
147 | 148 |
148 void CCFrameRateController::didAbortAllPendingFrames() | 149 void CCFrameRateController::didAbortAllPendingFrames() |
149 { | 150 { |
150 m_numFramesPending = 0; | 151 m_numFramesPending = 0; |
151 } | 152 } |
152 | 153 |
153 base::TimeTicks CCFrameRateController::nextTickTime() | 154 base::TimeTicks CCFrameRateController::nextTickTime() |
154 { | 155 { |
155 if (m_isTimeSourceThrottling) | 156 if (m_isTimeSourceThrottling) |
156 return m_timeSource->nextTickTime(); | 157 return m_timeSource->nextTickTime(); |
157 | 158 |
158 return base::TimeTicks(); | 159 return base::TimeTicks(); |
159 } | 160 } |
160 | 161 |
161 } | 162 } |
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