sonyoss-vita-webkit/Source/WebCore/Modules/webaudio/AudioParam.idl

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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[
    Conditional=WEB_AUDIO
] interface AudioParam {
    attribute float value;
    readonly attribute float minValue;
    readonly attribute float maxValue;
    readonly attribute float defaultValue;

    readonly attribute DOMString name;

    // FIXME: Could define units constants here (seconds, decibels, cents, etc.)...
    readonly attribute unsigned short units;

    // Parameter automation.
    void setValueAtTime(float value, float time);
    void linearRampToValueAtTime(float value, float time);
    void exponentialRampToValueAtTime(float value, float time);

    // Exponentially approach the target with a rate having the given time constant.
    void setTargetAtTime(float target, float time, float timeConstant);

    // Sets an array of arbitrary parameter values starting at time for the given duration.
    // The number of values will be scaled to fit into the desired duration.
    void setValueCurveAtTime(Float32Array values, float time, float duration);

    // Cancels all scheduled parameter changes with times greater than or equal to startTime.
    void cancelScheduledValues(float startTime);

    [Conditional=LEGACY_WEB_AUDIO, ImplementedAs=setTargetAtTime] void setTargetValueAtTime(float targetValue, float time, float timeConstant);

};