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