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| 1 /* |
| 2 * Copyright (C) 2010, Google Inc. All rights reserved. |
| 3 * Copyright (C) 2011 Apple Inc. All rights reserved. |
| 4 * |
| 5 * Redistribution and use in source and binary forms, with or without |
| 6 * modification, are permitted provided that the following conditions |
| 7 * are met: |
| 8 * 1. Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. |
| 10 * 2. Redistributions in binary form must reproduce the above copyright |
| 11 * notice, this list of conditions and the following disclaimer in the |
| 12 * documentation and/or other materials provided with the distribution. |
| 13 * |
| 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y |
| 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 17 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y |
| 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N |
| 21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 23 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 */ |
| 25 |
| 26 module webaudio { |
| 27 interface [ |
| 28 Conditional=WEB_AUDIO, |
| 29 ActiveDOMObject, |
| 30 CustomConstructor, |
| 31 ConstructorParameters=0, |
| 32 JSCustomMarkFunction, |
| 33 EventTarget |
| 34 ] AudioContext { |
| 35 // All rendered audio ultimately connects to destination, which represen
ts the audio hardware. |
| 36 readonly attribute AudioDestinationNode destination; |
| 37 |
| 38 // All scheduled times are relative to this time in seconds. |
| 39 readonly attribute float currentTime; |
| 40 |
| 41 // All AudioNodes in the context run at this sample-rate (in sample-fram
es per second). |
| 42 readonly attribute float sampleRate; |
| 43 |
| 44 // All panning is relative to this listener. |
| 45 readonly attribute AudioListener listener; |
| 46 |
| 47 // Number of AudioBufferSourceNodes that are currently playing. |
| 48 readonly attribute unsigned long activeSourceCount; |
| 49 |
| 50 AudioBuffer createBuffer(in unsigned long numberOfChannels, in unsigned
long numberOfFrames, in float sampleRate) |
| 51 raises(DOMException); |
| 52 AudioBuffer createBuffer(in ArrayBuffer buffer, in boolean mixToMono) |
| 53 raises(DOMException); |
| 54 |
| 55 // Asynchronous audio file data decoding. |
| 56 void decodeAudioData(in ArrayBuffer audioData, in [Callback] AudioBuffer
Callback successCallback, in [Optional, Callback] AudioBufferCallback errorCallb
ack) |
| 57 raises(DOMException); |
| 58 |
| 59 // Sources |
| 60 AudioBufferSourceNode createBufferSource(); |
| 61 #if defined(ENABLE_VIDEO) && ENABLE_VIDEO |
| 62 MediaElementAudioSourceNode createMediaElementSource(in HTMLMediaElement
mediaElement) |
| 63 raises(DOMException); |
| 64 #endif |
| 65 // Processing nodes |
| 66 AudioGainNode createGainNode(); |
| 67 DelayNode createDelayNode(in [Optional] double maxDelayTime); |
| 68 BiquadFilterNode createBiquadFilter(); |
| 69 WaveShaperNode createWaveShaper(); |
| 70 LowPass2FilterNode createLowPass2Filter(); |
| 71 HighPass2FilterNode createHighPass2Filter(); |
| 72 AudioPannerNode createPanner(); |
| 73 ConvolverNode createConvolver(); |
| 74 DynamicsCompressorNode createDynamicsCompressor(); |
| 75 RealtimeAnalyserNode createAnalyser(); |
| 76 JavaScriptAudioNode createJavaScriptNode(in unsigned long bufferSize); |
| 77 |
| 78 // Channel splitting and merging |
| 79 AudioChannelSplitter createChannelSplitter(); |
| 80 AudioChannelMerger createChannelMerger(); |
| 81 |
| 82 // Offline rendering |
| 83 // void prepareOfflineBufferRendering(in unsigned long numberOfChannels,
in unsigned long numberOfFrames, in float sampleRate); |
| 84 attribute EventListener oncomplete; |
| 85 void startRendering(); |
| 86 }; |
| 87 } |
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