AudioParam.idl   [plain text]

/*
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[
    Conditional=WEB_AUDIO,
] interface AudioParam {
    attribute unrestricted float value;
    readonly attribute unrestricted float minValue;
    readonly attribute unrestricted float maxValue;
    readonly attribute unrestricted 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(unrestricted float value, unrestricted float time);
    void linearRampToValueAtTime(unrestricted float value, unrestricted float time);
    void exponentialRampToValueAtTime(unrestricted float value, unrestricted float time);

    // Exponentially approach the target with a rate having the given time constant.
    void setTargetAtTime(unrestricted float target, unrestricted float time, unrestricted 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, unrestricted float time, unrestricted float duration); // FIXME: values should not be nullable.

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