| /* |
| * 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. |
| [Conditional=WEBGL] void getFloatFrequencyData(in Float32Array array); |
| [Conditional=WEBGL] void getByteFrequencyData(in Uint8Array array); |
| |
| // Real-time waveform data |
| [Conditional=WEBGL] void getByteTimeDomainData(in Uint8Array array); |
| }; |
| } |