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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 AN
Y |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y | 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y |
| 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N | 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N |
| 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 23 */ | 23 */ |
| 24 | 24 |
| 25 [ | 25 [ |
| 26 NoInterfaceObject, |
| 26 Conditional=WEB_AUDIO | 27 Conditional=WEB_AUDIO |
| 27 ] interface AnalyserNode : AudioNode { | 28 ] interface AnalyserNode : AudioNode { |
| 28 [SetterRaisesException] attribute unsigned long fftSize; | 29 [SetterRaisesException] attribute unsigned long fftSize; |
| 29 readonly attribute unsigned long frequencyBinCount; | 30 readonly attribute unsigned long frequencyBinCount; |
| 30 | 31 |
| 31 // minDecibels / maxDecibels represent the range to scale the FFT analysis d
ata for conversion to unsigned byte values. | 32 // minDecibels / maxDecibels represent the range to scale the FFT analysis d
ata for conversion to unsigned byte values. |
| 32 attribute float minDecibels; | 33 attribute float minDecibels; |
| 33 attribute float maxDecibels; | 34 attribute float maxDecibels; |
| 34 | 35 |
| 35 // A value from 0.0 -> 1.0 where 0.0 represents no time averaging with the l
ast analysis frame. | 36 // A value from 0.0 -> 1.0 where 0.0 represents no time averaging with the l
ast analysis frame. |
| 36 attribute float smoothingTimeConstant; | 37 attribute float smoothingTimeConstant; |
| 37 | 38 |
| 38 // Copies the current frequency data into the passed array. | 39 // Copies the current frequency data into the passed array. |
| 39 // If the array has fewer elements than the frequencyBinCount, the excess el
ements will be dropped. | 40 // If the array has fewer elements than the frequencyBinCount, the excess el
ements will be dropped. |
| 40 void getFloatFrequencyData(Float32Array array); | 41 void getFloatFrequencyData(Float32Array array); |
| 41 void getByteFrequencyData(Uint8Array array); | 42 void getByteFrequencyData(Uint8Array array); |
| 42 | 43 |
| 43 // Real-time waveform data | 44 // Real-time waveform data |
| 44 void getByteTimeDomainData(Uint8Array array); | 45 void getByteTimeDomainData(Uint8Array array); |
| 45 }; | 46 }; |
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