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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "config.h" | |
| 6 | |
| 7 #include "CCFrameRateController.h" | |
| 8 | |
| 9 #include "CCDelayBasedTimeSource.h" | |
| 10 #include "CCTimeSource.h" | |
| 11 #include "TraceEvent.h" | |
| 12 #include <wtf/CurrentTime.h> | |
| 13 | |
| 14 namespace { | |
| 15 | |
| 16 // This will be the maximum number of pending frames unless | |
| 17 // CCFrameRateController::setMaxFramesPending is called. | |
| 18 const int defaultMaxFramesPending = 2; | |
| 19 | |
| 20 } // namespace | |
| 21 | |
| 22 namespace cc { | |
| 23 | |
| 24 class CCFrameRateControllerTimeSourceAdapter : public CCTimeSourceClient { | |
| 25 public: | |
| 26 static scoped_ptr<CCFrameRateControllerTimeSourceAdapter> create(CCFrameRate
Controller* frameRateController) { | |
| 27 return make_scoped_ptr(new CCFrameRateControllerTimeSourceAdapter(frameR
ateController)); | |
| 28 } | |
| 29 virtual ~CCFrameRateControllerTimeSourceAdapter() {} | |
| 30 | |
| 31 virtual void onTimerTick() OVERRIDE { | |
| 32 m_frameRateController->onTimerTick(); | |
| 33 } | |
| 34 | |
| 35 private: | |
| 36 explicit CCFrameRateControllerTimeSourceAdapter(CCFrameRateController* frame
RateController) | |
| 37 : m_frameRateController(frameRateController) {} | |
| 38 | |
| 39 CCFrameRateController* m_frameRateController; | |
| 40 }; | |
| 41 | |
| 42 CCFrameRateController::CCFrameRateController(PassRefPtr<CCTimeSource> timer) | |
| 43 : m_client(0) | |
| 44 , m_numFramesPending(0) | |
| 45 , m_maxFramesPending(defaultMaxFramesPending) | |
| 46 , m_timeSource(timer) | |
| 47 , m_active(false) | |
| 48 , m_swapBuffersCompleteSupported(true) | |
| 49 , m_isTimeSourceThrottling(true) | |
| 50 { | |
| 51 m_timeSourceClientAdapter = CCFrameRateControllerTimeSourceAdapter::create(t
his); | |
| 52 m_timeSource->setClient(m_timeSourceClientAdapter.get()); | |
| 53 } | |
| 54 | |
| 55 CCFrameRateController::CCFrameRateController(CCThread* thread) | |
| 56 : m_client(0) | |
| 57 , m_numFramesPending(0) | |
| 58 , m_maxFramesPending(defaultMaxFramesPending) | |
| 59 , m_active(false) | |
| 60 , m_swapBuffersCompleteSupported(true) | |
| 61 , m_isTimeSourceThrottling(false) | |
| 62 , m_manualTicker(new CCTimer(thread, this)) | |
| 63 { | |
| 64 } | |
| 65 | |
| 66 CCFrameRateController::~CCFrameRateController() | |
| 67 { | |
| 68 if (m_isTimeSourceThrottling) | |
| 69 m_timeSource->setActive(false); | |
| 70 } | |
| 71 | |
| 72 void CCFrameRateController::setActive(bool active) | |
| 73 { | |
| 74 if (m_active == active) | |
| 75 return; | |
| 76 TRACE_EVENT1("cc", "CCFrameRateController::setActive", "active", active); | |
| 77 m_active = active; | |
| 78 | |
| 79 if (m_isTimeSourceThrottling) | |
| 80 m_timeSource->setActive(active); | |
| 81 else { | |
| 82 if (active) | |
| 83 postManualTick(); | |
| 84 else | |
| 85 m_manualTicker->stop(); | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 void CCFrameRateController::setMaxFramesPending(int maxFramesPending) | |
| 90 { | |
| 91 ASSERT(maxFramesPending > 0); | |
| 92 m_maxFramesPending = maxFramesPending; | |
| 93 } | |
| 94 | |
| 95 void CCFrameRateController::setTimebaseAndInterval(base::TimeTicks timebase, bas
e::TimeDelta interval) | |
| 96 { | |
| 97 if (m_isTimeSourceThrottling) | |
| 98 m_timeSource->setTimebaseAndInterval(timebase, interval); | |
| 99 } | |
| 100 | |
| 101 void CCFrameRateController::setSwapBuffersCompleteSupported(bool supported) | |
| 102 { | |
| 103 m_swapBuffersCompleteSupported = supported; | |
| 104 } | |
| 105 | |
| 106 void CCFrameRateController::onTimerTick() | |
| 107 { | |
| 108 ASSERT(m_active); | |
| 109 | |
| 110 // Check if we have too many frames in flight. | |
| 111 bool throttled = m_numFramesPending >= m_maxFramesPending; | |
| 112 | |
| 113 if (m_client) | |
| 114 m_client->vsyncTick(throttled); | |
| 115 | |
| 116 if (m_swapBuffersCompleteSupported && !m_isTimeSourceThrottling && m_numFram
esPending < m_maxFramesPending) | |
| 117 postManualTick(); | |
| 118 } | |
| 119 | |
| 120 void CCFrameRateController::postManualTick() | |
| 121 { | |
| 122 if (m_active) | |
| 123 m_manualTicker->startOneShot(0); | |
| 124 } | |
| 125 | |
| 126 void CCFrameRateController::onTimerFired() | |
| 127 { | |
| 128 onTimerTick(); | |
| 129 } | |
| 130 | |
| 131 void CCFrameRateController::didBeginFrame() | |
| 132 { | |
| 133 if (m_swapBuffersCompleteSupported) | |
| 134 m_numFramesPending++; | |
| 135 else if (!m_isTimeSourceThrottling) | |
| 136 postManualTick(); | |
| 137 } | |
| 138 | |
| 139 void CCFrameRateController::didFinishFrame() | |
| 140 { | |
| 141 ASSERT(m_swapBuffersCompleteSupported); | |
| 142 | |
| 143 m_numFramesPending--; | |
| 144 if (!m_isTimeSourceThrottling) | |
| 145 postManualTick(); | |
| 146 } | |
| 147 | |
| 148 void CCFrameRateController::didAbortAllPendingFrames() | |
| 149 { | |
| 150 m_numFramesPending = 0; | |
| 151 } | |
| 152 | |
| 153 base::TimeTicks CCFrameRateController::nextTickTime() | |
| 154 { | |
| 155 if (m_isTimeSourceThrottling) | |
| 156 return m_timeSource->nextTickTime(); | |
| 157 | |
| 158 return base::TimeTicks(); | |
| 159 } | |
| 160 | |
| 161 } | |
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Chromium Code Reviews
Issue 11122003:
[cc] Rename all cc/ filenames to Chromium style (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src