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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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66 void cancelScheduledValues(double startTime, ExceptionState&); | 66 void cancelScheduledValues(double startTime, ExceptionState&); |
67 | 67 |
68 // hasValue is set to true if a valid timeline value is returned. | 68 // hasValue is set to true if a valid timeline value is returned. |
69 // otherwise defaultValue is returned. | 69 // otherwise defaultValue is returned. |
70 float valueForContextTime(AudioDestinationHandler&, | 70 float valueForContextTime(AudioDestinationHandler&, |
71 float defaultValue, | 71 float defaultValue, |
72 bool& hasValue, | 72 bool& hasValue, |
73 float minValue, | 73 float minValue, |
74 float maxValue); | 74 float maxValue); |
75 | 75 |
76 // Given the time range in frames, calculates parameter values into the values
buffer and | 76 // Given the time range in frames, calculates parameter values into the values |
77 // returns the last parameter value calculated for "values" or the defaultValu
e if none were | 77 // buffer and returns the last parameter value calculated for "values" or the |
78 // calculated. controlRate is the rate (number per second) at which parameter
values will be | 78 // defaultValue if none were calculated. controlRate is the rate (number per |
79 // calculated. It should equal sampleRate for sample-accurate parameter chang
es, and otherwise | 79 // second) at which parameter values will be calculated. It should equal |
80 // will usually match the render quantum size such that the parameter value ch
anges once per | 80 // sampleRate for sample-accurate parameter changes, and otherwise will |
81 // render quantum. | 81 // usually match the render quantum size such that the parameter value changes |
| 82 // once per render quantum. |
82 float valuesForFrameRange(size_t startFrame, | 83 float valuesForFrameRange(size_t startFrame, |
83 size_t endFrame, | 84 size_t endFrame, |
84 float defaultValue, | 85 float defaultValue, |
85 float* values, | 86 float* values, |
86 unsigned numberOfValues, | 87 unsigned numberOfValues, |
87 double sampleRate, | 88 double sampleRate, |
88 double controlRate, | 89 double controlRate, |
89 float minValue, | 90 float minValue, |
90 float maxValue); | 91 float maxValue); |
91 | 92 |
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143 double callTime = 0); | 144 double callTime = 0); |
144 | 145 |
145 Type m_type; | 146 Type m_type; |
146 float m_value; | 147 float m_value; |
147 double m_time; | 148 double m_time; |
148 // Only used for SetTarget events | 149 // Only used for SetTarget events |
149 double m_timeConstant; | 150 double m_timeConstant; |
150 // Only used for SetValueCurve events. | 151 // Only used for SetValueCurve events. |
151 double m_duration; | 152 double m_duration; |
152 Vector<float> m_curve; | 153 Vector<float> m_curve; |
153 // Initial value and time to use for linear and exponential ramps that don't
have a | 154 // Initial value and time to use for linear and exponential ramps that don't |
154 // preceding event. | 155 // have a preceding event. |
155 float m_initialValue; | 156 float m_initialValue; |
156 double m_callTime; | 157 double m_callTime; |
157 }; | 158 }; |
158 | 159 |
159 void insertEvent(const ParamEvent&, ExceptionState&); | 160 void insertEvent(const ParamEvent&, ExceptionState&); |
160 float valuesForFrameRangeImpl(size_t startFrame, | 161 float valuesForFrameRangeImpl(size_t startFrame, |
161 size_t endFrame, | 162 size_t endFrame, |
162 float defaultValue, | 163 float defaultValue, |
163 float* values, | 164 float* values, |
164 unsigned numberOfValues, | 165 unsigned numberOfValues, |
165 double sampleRate, | 166 double sampleRate, |
166 double controlRate); | 167 double controlRate); |
167 | 168 |
168 // Produce a nice string describing the event in human-readable form. | 169 // Produce a nice string describing the event in human-readable form. |
169 String eventToString(const ParamEvent&); | 170 String eventToString(const ParamEvent&); |
170 Vector<ParamEvent> m_events; | 171 Vector<ParamEvent> m_events; |
171 | 172 |
172 mutable Mutex m_eventsLock; | 173 mutable Mutex m_eventsLock; |
173 | 174 |
174 // Smoothing (de-zippering) | 175 // Smoothing (de-zippering) |
175 float m_smoothedValue; | 176 float m_smoothedValue; |
176 }; | 177 }; |
177 | 178 |
178 } // namespace blink | 179 } // namespace blink |
179 | 180 |
180 #endif // AudioParamTimeline_h | 181 #endif // AudioParamTimeline_h |
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