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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 |
| (...skipping 13 matching lines...) Expand all Loading... |
| 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/AbstractAudioContext.h" | 33 #include "modules/webaudio/AbstractAudioContext.h" |
| 34 #include "modules/webaudio/AudioDestinationNode.h" |
| 34 #include "wtf/Forward.h" | 35 #include "wtf/Forward.h" |
| 35 #include "wtf/Threading.h" | 36 #include "wtf/Threading.h" |
| 36 #include "wtf/Vector.h" | 37 #include "wtf/Vector.h" |
| 37 | 38 |
| 38 namespace blink { | 39 namespace blink { |
| 39 | 40 |
| 40 class AudioParamTimeline { | 41 class AudioParamTimeline { |
| 41 DISALLOW_NEW(); | 42 DISALLOW_NEW(); |
| 42 public: | 43 public: |
| 43 AudioParamTimeline() | 44 AudioParamTimeline() |
| 44 { | 45 { |
| 45 } | 46 } |
| 46 | 47 |
| 47 void setValueAtTime(float value, double time, ExceptionState&); | 48 void setValueAtTime(float value, double time, ExceptionState&); |
| 48 void linearRampToValueAtTime(float value, double time, float initialValue, d
ouble callTime, ExceptionState&); | 49 void linearRampToValueAtTime(float value, double time, float initialValue, d
ouble callTime, ExceptionState&); |
| 49 void exponentialRampToValueAtTime(float value, double time, float initialVa
lue, double callTime, ExceptionState&); | 50 void exponentialRampToValueAtTime(float value, double time, float initialVa
lue, double callTime, ExceptionState&); |
| 50 void setTargetAtTime(float target, double time, double timeConstant, Excepti
onState&); | 51 void setTargetAtTime(float target, double time, double timeConstant, Excepti
onState&); |
| 51 void setValueCurveAtTime(DOMFloat32Array* curve, double time, double duratio
n, ExceptionState&); | 52 void setValueCurveAtTime(DOMFloat32Array* curve, double time, double duratio
n, ExceptionState&); |
| 52 void cancelScheduledValues(double startTime, ExceptionState&); | 53 void cancelScheduledValues(double startTime, ExceptionState&); |
| 53 | 54 |
| 54 // hasValue is set to true if a valid timeline value is returned. | 55 // hasValue is set to true if a valid timeline value is returned. |
| 55 // otherwise defaultValue is returned. | 56 // otherwise defaultValue is returned. |
| 56 float valueForContextTime(AbstractAudioContext*, float defaultValue, bool& h
asValue); | 57 float valueForContextTime(AudioDestinationHandler&, float defaultValue, bool
& hasValue); |
| 57 | 58 |
| 58 // Given the time range in frames, calculates parameter values into the valu
es buffer and | 59 // Given the time range in frames, calculates parameter values into the valu
es buffer and |
| 59 // returns the last parameter value calculated for "values" or the defaultVa
lue if none were | 60 // returns the last parameter value calculated for "values" or the defaultVa
lue if none were |
| 60 // calculated. controlRate is the rate (number per second) at which paramet
er values will be | 61 // calculated. controlRate is the rate (number per second) at which paramet
er values will be |
| 61 // calculated. It should equal sampleRate for sample-accurate parameter cha
nges, and otherwise | 62 // calculated. It should equal sampleRate for sample-accurate parameter cha
nges, and otherwise |
| 62 // will usually match the render quantum size such that the parameter value
changes once per | 63 // will usually match the render quantum size such that the parameter value
changes once per |
| 63 // render quantum. | 64 // render quantum. |
| 64 float valuesForFrameRange(size_t startFrame, size_t endFrame, float defaultV
alue, float* values, unsigned numberOfValues, double sampleRate, double controlR
ate); | 65 float valuesForFrameRange(size_t startFrame, size_t endFrame, float defaultV
alue, float* values, unsigned numberOfValues, double sampleRate, double controlR
ate); |
| 65 | 66 |
| 66 // Returns true if this AudioParam has any events on it. | 67 // Returns true if this AudioParam has any events on it. |
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| 128 // Produce a nice string describing the event in human-readable form. | 129 // Produce a nice string describing the event in human-readable form. |
| 129 String eventToString(const ParamEvent&); | 130 String eventToString(const ParamEvent&); |
| 130 Vector<ParamEvent> m_events; | 131 Vector<ParamEvent> m_events; |
| 131 | 132 |
| 132 mutable Mutex m_eventsLock; | 133 mutable Mutex m_eventsLock; |
| 133 }; | 134 }; |
| 134 | 135 |
| 135 } // namespace blink | 136 } // namespace blink |
| 136 | 137 |
| 137 #endif // AudioParamTimeline_h | 138 #endif // AudioParamTimeline_h |
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