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/*
* Copyright (C) 2010, Google Inc. All rights reserved.
* Copyright (C) 2011 Apple 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.
*/
enum AudioContextState {
"suspended",
"running",
"interrupted",
"closed"
};
[
ActiveDOMObject,
Conditional=WEB_AUDIO,
Constructor,
ConstructorCallWith=Document,
EnabledBySetting=WebAudio,
ExportMacro=WEBCORE_EXPORT,
InterfaceName=webkitAudioContext,
] interface AudioContext : EventTarget {
// All rendered audio ultimately connects to destination, which represents the audio hardware.
readonly attribute AudioDestinationNode destination;
// All scheduled times are relative to this time in seconds.
readonly attribute unrestricted double currentTime;
// All AudioNodes in the context run at this sample-rate (sample-frames per second).
readonly attribute unrestricted float sampleRate;
// All panning is relative to this listener.
readonly attribute AudioListener listener;
Promise<void> suspend();
Promise<void> resume();
Promise<void> close();
readonly attribute AudioContextState state;
attribute EventHandler onstatechange;
// Number of AudioBufferSourceNodes that are currently playing.
readonly attribute unsigned long activeSourceCount;
[MayThrowException] AudioBuffer createBuffer(unsigned long numberOfChannels, unsigned long numberOfFrames, unrestricted float sampleRate);
[MayThrowException] AudioBuffer createBuffer(ArrayBuffer buffer, boolean mixToMono);
// Asynchronous audio file data decoding.
// FIXME: successCallback should be optional and the callbacks should not be nullable. This should also return a Promise.
void decodeAudioData(ArrayBuffer audioData, AudioBufferCallback? successCallback, optional AudioBufferCallback? errorCallback);
// Sources
AudioBufferSourceNode createBufferSource();
[Conditional=VIDEO, MayThrowException] MediaElementAudioSourceNode createMediaElementSource(HTMLMediaElement mediaElement);
[Conditional=MEDIA_STREAM, MayThrowException] MediaStreamAudioSourceNode createMediaStreamSource(MediaStream mediaStream);
[Conditional=MEDIA_STREAM] MediaStreamAudioDestinationNode createMediaStreamDestination();
// Processing nodes
GainNode createGain();
[MayThrowException] DelayNode createDelay(optional unrestricted double maxDelayTime = 1);
BiquadFilterNode createBiquadFilter();
WaveShaperNode createWaveShaper();
PannerNode createPanner();
ConvolverNode createConvolver();
DynamicsCompressorNode createDynamicsCompressor();
AnalyserNode createAnalyser();
[MayThrowException] ScriptProcessorNode createScriptProcessor(optional unsigned long bufferSize = 0, optional unsigned long numberOfInputChannels = 2, optional unsigned long numberOfOutputChannels = 2);
OscillatorNode createOscillator();
[MayThrowException] PeriodicWave createPeriodicWave(Float32Array real, Float32Array imag);
// Channel splitting and merging
[MayThrowException] ChannelSplitterNode createChannelSplitter(optional unsigned long numberOfOutputs = 6);
[MayThrowException] ChannelMergerNode createChannelMerger(optional unsigned long numberOfInputs = 6);
// Offline rendering
// void prepareOfflineBufferRendering(unsigned long numberOfChannels, unsigned long numberOfFrames, unrestricted float sampleRate);
attribute EventHandler oncomplete;
void startRendering();
};
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