Source/WebCore/Modules/webaudio/AnalyserNode.idl

/*
 * Copyright (C) 2010, Google Inc. All rights reserved.
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[
    Conditional=WEB_AUDIO,
    JSGenerateToJSObject,
] interface AnalyserNode : AudioNode {
    attribute unsigned long fftSize;
    readonly attribute unsigned long frequencyBinCount;

    // minDecibels / maxDecibels represent the range to scale the FFT analysis data for conversion to unsigned byte values.
    attribute unrestricted double minDecibels;
    attribute unrestricted double maxDecibels;

    // A value from 0.0 -> 1.0 where 0.0 represents no time averaging with the last analysis frame.
    attribute unrestricted double smoothingTimeConstant;

    // Copies the current frequency data into the passed array.
    // If the array has fewer elements than the frequencyBinCount, the excess elements will be dropped.
    void getFloatFrequencyData(Float32Array? array); // FIXME: The parameter should not be nullable.
    void getByteFrequencyData(Uint8Array? array); // FIXME: The parameter should not be nullable.

    // Real-time waveform data
    void getByteTimeDomainData(Uint8Array? array); // FIXME: The parameter should not be nullable.
};