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1 /* | 1 /* |
2 * Copyright (C) 2010, Google Inc. All rights reserved. | 2 * Copyright (C) 2010, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y | 16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE |
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N | 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| 23 * DAMAGE. |
23 */ | 24 */ |
24 | 25 |
25 // See https://webaudio.github.io/web-audio-api/#the-analysernode-interface | 26 // See https://webaudio.github.io/web-audio-api/#the-analysernode-interface |
26 [ | 27 [ |
27 Constructor(BaseAudioContext context, optional AnalyserOptions options), | 28 Constructor(BaseAudioContext context, optional AnalyserOptions options), |
28 RaisesException=Constructor, | 29 RaisesException=Constructor, |
29 ] | 30 ] |
30 interface AnalyserNode : AudioNode { | 31 interface AnalyserNode : AudioNode { |
31 [RaisesException=Setter] attribute unsigned long fftSize; | 32 [RaisesException=Setter] attribute unsigned long fftSize; |
32 readonly attribute unsigned long frequencyBinCount; | 33 readonly attribute unsigned long frequencyBinCount; |
33 | 34 |
34 // minDecibels / maxDecibels represent the range to scale the FFT analysis d
ata for conversion to unsigned byte values. | 35 // minDecibels / maxDecibels represent the range to scale the FFT analysis d
ata for conversion to unsigned byte values. |
35 [RaisesException=Setter] attribute double minDecibels; | 36 [RaisesException=Setter] attribute double minDecibels; |
36 [RaisesException=Setter] attribute double maxDecibels; | 37 [RaisesException=Setter] attribute double maxDecibels; |
37 | 38 |
38 // A value from 0.0 -> 1.0 where 0.0 represents no time averaging with the l
ast analysis frame. | 39 // A value from 0.0 -> 1.0 where 0.0 represents no time averaging with the l
ast analysis frame. |
39 [RaisesException=Setter] attribute double smoothingTimeConstant; | 40 [RaisesException=Setter] attribute double smoothingTimeConstant; |
40 | 41 |
41 // Copies the current frequency data into the passed array. | 42 // Copies the current frequency data into the passed array. |
42 // If the array has fewer elements than the frequencyBinCount, the excess el
ements will be dropped. | 43 // If the array has fewer elements than the frequencyBinCount, the excess el
ements will be dropped. |
43 void getFloatFrequencyData(Float32Array array); | 44 void getFloatFrequencyData(Float32Array array); |
44 void getByteFrequencyData(Uint8Array array); | 45 void getByteFrequencyData(Uint8Array array); |
45 | 46 |
46 // Real-time waveform data | 47 // Real-time waveform data |
47 void getFloatTimeDomainData(Float32Array array); | 48 void getFloatTimeDomainData(Float32Array array); |
48 void getByteTimeDomainData(Uint8Array array); | 49 void getByteTimeDomainData(Uint8Array array); |
49 }; | 50 }; |
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