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/*
* Copyright (C) 2010, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
module audio {
interface [
Conditional=WEB_AUDIO,
GenerateToJS
] RealtimeAnalyserNode : 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 float minDecibels;
attribute float maxDecibels;
// A value from 0.0 -> 1.0 where 0.0 represents no time averaging with the last analysis frame.
attribute float 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(in Float32Array array);
void getByteFrequencyData(in Uint8Array array);
// Real-time waveform data
void getByteTimeDomainData(in Uint8Array array);
};
}
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