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removing old js files
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import Tone from "../core/Tone";
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import "../core/Transport";
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import "../core/Buffer";
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import "./OfflineContext";
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import "./Master";
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/**
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* Generate a buffer by rendering all of the Tone.js code within the callback using the OfflineAudioContext.
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* The OfflineAudioContext is capable of rendering much faster than real time in many cases.
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* The callback function also passes in an offline instance of Tone.Transport which can be used
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* to schedule events along the Transport. **NOTE** OfflineAudioContext has the same restrictions
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* as the AudioContext in that on certain platforms (like iOS) it must be invoked by an explicit
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* user action like a click or tap.
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* @param {Function} callback All Tone.js nodes which are created and scheduled within this callback are recorded into the output Buffer.
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* @param {Time} duration the amount of time to record for.
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* @return {Promise} The promise which is invoked with the Tone.Buffer of the recorded output.
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* @example
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* //render 2 seconds of the oscillator
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* Tone.Offline(function(){
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* //only nodes created in this callback will be recorded
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* var oscillator = new Tone.Oscillator().toMaster().start(0)
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* //schedule their events
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* }, 2).then(function(buffer){
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* //do something with the output buffer
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* })
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* @example
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* //can also schedule events along the Transport
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* //using the passed in Offline Transport
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* Tone.Offline(function(Transport){
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* var osc = new Tone.Oscillator().toMaster()
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* Transport.schedule(function(time){
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* osc.start(time).stop(time + 0.1)
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* }, 1)
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* Transport.start(0.2)
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* }, 4).then(function(buffer){
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* //do something with the output buffer
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* })
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*/
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Tone.Offline = function(callback, duration) {
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//set the OfflineAudioContext
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var sampleRate = Tone.context.sampleRate;
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var originalContext = Tone.context;
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var context = new Tone.OfflineContext(2, duration, sampleRate);
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Tone.context = context;
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//invoke the callback/scheduling
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var response = callback(Tone.Transport);
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//the return value
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var ret = null;
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if (response && Tone.isFunction(response.then)) {
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//wait for the promise to resolve
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ret = response.then(function() {
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//then render the audio
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return context.render();
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});
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} else {
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//process the audio
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ret = context.render();
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}
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//return the original AudioContext
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Tone.context = originalContext;
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//return the audio
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return ret.then(function(buffer) {
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//wrap it in a Tone.Buffer
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return new Tone.Buffer(buffer);
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});
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};
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export default Tone.Offline;
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import Tone from "../core/Tone";
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import "../core/Context";
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/**
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* @class Wrapper around the OfflineAudioContext
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* @extends {Tone.Context}
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* @param {Number} channels The number of channels to render
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* @param {Number} duration The duration to render in samples
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* @param {Number} sampleRate the sample rate to render at
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*/
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const OfflineContext = function(channels, duration, sampleRate) {
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/**
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* The offline context
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* @private
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* @type {OfflineAudioContext}
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*/
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var offlineContext = new OfflineAudioContext(channels, duration * sampleRate, sampleRate);
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//wrap the methods/members
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Tone.Context.call(this, {
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"context" : offlineContext,
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"clockSource" : "offline",
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"lookAhead" : 0,
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"updateInterval" : 128 / sampleRate,
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});
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/**
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* A private reference to the duration
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* @private
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* @type {Number}
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*/
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this._duration = duration;
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/**
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* An artificial clock source
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* @type {Number}
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* @private
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*/
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this._currentTime = 0;
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};
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// Tone.extend(OfflineContext, Tone.Context);
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/**
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* Override the now method to point to the internal clock time
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* @return {Number}
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*/
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OfflineContext.prototype.now = function() {
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return this._currentTime;
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};
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/**
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* Overwrite resume, should not do anything in the OfflineAudioContext.
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* @return {Promise}
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*/
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OfflineContext.prototype.resume = function() {
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return Promise.resolve();
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};
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/**
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* Render the output of the OfflineContext
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* @return {Promise}
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*/
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OfflineContext.prototype.render = function() {
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while (this._duration - this._currentTime >= 0) {
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//invoke all the callbacks on that time
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this.emit("tick");
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//increment the clock in 5ms chunks
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this._currentTime += 0.005;
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}
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return this._context.startRendering();
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};
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/**
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* Close the context
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* @return {Promise}
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*/
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OfflineContext.prototype.close = function() {
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this._context = null;
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return Promise.resolve();
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};
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export default OfflineContext;
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