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1 /* | 1 /* |
2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 */ | 27 */ |
28 | 28 |
29 #ifndef AudioParamTimeline_h | 29 #ifndef AudioParamTimeline_h |
30 #define AudioParamTimeline_h | 30 #define AudioParamTimeline_h |
31 | 31 |
32 #include "core/dom/DOMTypedArray.h" | 32 #include "core/dom/DOMTypedArray.h" |
33 #include "modules/webaudio/AudioContext.h" | 33 #include "modules/webaudio/AbstractAudioContext.h" |
34 #include "wtf/Forward.h" | 34 #include "wtf/Forward.h" |
35 #include "wtf/Threading.h" | 35 #include "wtf/Threading.h" |
36 #include "wtf/Vector.h" | 36 #include "wtf/Vector.h" |
37 | 37 |
38 namespace blink { | 38 namespace blink { |
39 | 39 |
40 class AudioParamTimeline { | 40 class AudioParamTimeline { |
41 public: | 41 public: |
42 AudioParamTimeline() | 42 AudioParamTimeline() |
43 { | 43 { |
44 } | 44 } |
45 | 45 |
46 void setValueAtTime(float value, double time, ExceptionState&); | 46 void setValueAtTime(float value, double time, ExceptionState&); |
47 void linearRampToValueAtTime(float value, double time, ExceptionState&); | 47 void linearRampToValueAtTime(float value, double time, ExceptionState&); |
48 void exponentialRampToValueAtTime(float value, double time, ExceptionState&)
; | 48 void exponentialRampToValueAtTime(float value, double time, ExceptionState&)
; |
49 void setTargetAtTime(float target, double time, double timeConstant, Excepti
onState&); | 49 void setTargetAtTime(float target, double time, double timeConstant, Excepti
onState&); |
50 void setValueCurveAtTime(DOMFloat32Array* curve, double time, double duratio
n, ExceptionState&); | 50 void setValueCurveAtTime(DOMFloat32Array* curve, double time, double duratio
n, ExceptionState&); |
51 void cancelScheduledValues(double startTime, ExceptionState&); | 51 void cancelScheduledValues(double startTime, ExceptionState&); |
52 | 52 |
53 // hasValue is set to true if a valid timeline value is returned. | 53 // hasValue is set to true if a valid timeline value is returned. |
54 // otherwise defaultValue is returned. | 54 // otherwise defaultValue is returned. |
55 float valueForContextTime(AudioContext*, float defaultValue, bool& hasValue)
; | 55 float valueForContextTime(AbstractAudioContext*, float defaultValue, bool& h
asValue); |
56 | 56 |
57 // Given the time range, calculates parameter values into the values buffer | 57 // Given the time range, calculates parameter values into the values buffer |
58 // and returns the last parameter value calculated for "values" or the defau
ltValue if none were calculated. | 58 // and returns the last parameter value calculated for "values" or the defau
ltValue if none were calculated. |
59 // controlRate is the rate (number per second) at which parameter values wil
l be calculated. | 59 // controlRate is the rate (number per second) at which parameter values wil
l be calculated. |
60 // It should equal sampleRate for sample-accurate parameter changes, and oth
erwise will usually match | 60 // It should equal sampleRate for sample-accurate parameter changes, and oth
erwise will usually match |
61 // the render quantum size such that the parameter value changes once per re
nder quantum. | 61 // the render quantum size such that the parameter value changes once per re
nder quantum. |
62 float valuesForTimeRange(double startTime, double endTime, float defaultValu
e, float* values, unsigned numberOfValues, double sampleRate, double controlRate
); | 62 float valuesForTimeRange(double startTime, double endTime, float defaultValu
e, float* values, unsigned numberOfValues, double sampleRate, double controlRate
); |
63 | 63 |
64 bool hasValues() { return m_events.size(); } | 64 bool hasValues() { return m_events.size(); } |
65 | 65 |
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105 float valuesForTimeRangeImpl(double startTime, double endTime, float default
Value, float* values, unsigned numberOfValues, double sampleRate, double control
Rate); | 105 float valuesForTimeRangeImpl(double startTime, double endTime, float default
Value, float* values, unsigned numberOfValues, double sampleRate, double control
Rate); |
106 | 106 |
107 Vector<ParamEvent> m_events; | 107 Vector<ParamEvent> m_events; |
108 | 108 |
109 Mutex m_eventsLock; | 109 Mutex m_eventsLock; |
110 }; | 110 }; |
111 | 111 |
112 } // namespace blink | 112 } // namespace blink |
113 | 113 |
114 #endif // AudioParamTimeline_h | 114 #endif // AudioParamTimeline_h |
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