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1 /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 /* This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
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4 * You can obtain one at http://mozilla.org/MPL/2.0/. |
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5 * |
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6 * The origin of this IDL file is |
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7 * https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html |
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8 * |
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9 * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C |
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10 * liability, trademark and document use rules apply. |
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11 */ |
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12 |
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13 interface AudioParam { |
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14 |
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15 attribute float value; |
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16 readonly attribute float defaultValue; |
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17 |
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18 // Parameter automation. |
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19 [Throws] |
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20 void setValueAtTime(float value, double startTime); |
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21 [Throws] |
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22 void linearRampToValueAtTime(float value, double endTime); |
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23 [Throws] |
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24 void exponentialRampToValueAtTime(float value, double endTime); |
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25 |
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26 // Exponentially approach the target value with a rate having the given time constant. |
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27 [Throws] |
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28 void setTargetAtTime(float target, double startTime, double timeConstant); |
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29 |
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30 // Sets an array of arbitrary parameter values starting at time for the given duration. |
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31 // The number of values will be scaled to fit into the desired duration. |
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32 [Throws] |
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33 void setValueCurveAtTime(Float32Array values, double startTime, double duration); |
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34 |
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35 // Cancels all scheduled parameter changes with times greater than or equal to startTime. |
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36 [Throws] |
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37 void cancelScheduledValues(double startTime); |
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38 |
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39 }; |