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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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