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bundle.js
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bundle.js
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(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
function AdsrGainNode(ctx) {
this.ctx = ctx;
this.mode = 'exponentialRampToValueAtTime';
// this.mode = 'linearRampToValueAtTime';
this.options = {
attackAmp: 0.1,
decayAmp: 0.3,
sustainAmp: 0.7,
releaseAmp: 0.01,
attackTime: 0.1,
decayTime: 0.2,
sustainTime: 1.0,
releaseTime: 3.4,
autoRelease: true
};
/**
* Set options or use defaults
* @param {object} options
*/
this.setOptions = function (options) {
this.options = Object.assign(this.options, options);
};
this.gainNode
this.audioTime
/**
* Get a gain node from defined options
* @param {float} audioTime an audio context time stamp
*/
this.getGainNode = (audioTime) => {
this.gainNode = this.ctx.createGain();
this.audioTime = audioTime
// Firefox does not like 0 -> therefor 0.0000001
this.gainNode.gain.setValueAtTime(0.0000001, audioTime)
// Attack
this.gainNode.gain[this.mode](
this.options.attackAmp,
audioTime + this.options.attackTime)
// Decay
this.gainNode.gain[this.mode](
this.options.decayAmp,
audioTime + this.options.attackTime + this.options.decayTime)
// Sustain
this.gainNode.gain[this.mode](
this.options.sustainAmp,
audioTime + this.options.attackTime + this.options.sustainTime)
// Check if auto-release
// Then calculate when note should stop
if (this.options.autoRelease) {
this.gainNode.gain[this.mode](
this.options.releaseAmp,
audioTime + this.releaseTime()
)
// Disconnect the gain node
this.disconnect(audioTime + this.releaseTime())
}
return this.gainNode;
};
/**
* Release the note dynamicaly
* E.g. if your are making a keyboard, and you want the note
* to be released according to current audio time + the ADSR release time
*/
this.releaseNow = () => {
this.gainNode.gain[this.mode](
this.options.releaseAmp,
this.ctx.currentTime + this.options.releaseTime)
this.disconnect(this.options.releaseTime)
}
/**
* Get release time according to the adsr release time
*/
this.releaseTime = function() {
return this.options.attackTime + this.options.decayTime + this.options.sustainTime + this.options.releaseTime
}
/**
* Get release time according to 'now'
*/
this.releaseTimeNow = function () {
return this.ctx.currentTime + this.releaseTime()
}
/**
*
* @param {float} disconnectTime the time when gainNode should disconnect
*/
this.disconnect = (disconnectTime) => {
setTimeout( () => {
this.gainNode.disconnect();
},
disconnectTime * 1000);
};
}
module.exports = AdsrGainNode;
},{}],2:[function(require,module,exports){
// From: https://dev.opera.com/articles/drum-sounds-webaudio/
function audioBufferInstrument(context, buffer) {
this.context = context;
this.buffer = buffer;
}
audioBufferInstrument.prototype.setup = function () {
this.source = this.context.createBufferSource();
this.source.buffer = this.buffer;
this.source.connect(this.context.destination);
};
audioBufferInstrument.prototype.get = function () {
this.source = this.context.createBufferSource();
this.source.buffer = this.buffer;
return this.source;
};
audioBufferInstrument.prototype.trigger = function (time) {
this.setup();
this.source.start(time);
};
module.exports = audioBufferInstrument;
},{}],3:[function(require,module,exports){
/* FileSaver.js
* A saveAs() FileSaver implementation.
* 1.3.2
* 2016-06-16 18:25:19
*
* By Eli Grey, http://eligrey.com
* License: MIT
* See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
*/
/*global self */
/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */
/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */
var saveAs = saveAs || (function(view) {
"use strict";
// IE <10 is explicitly unsupported
if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
return;
}
var
doc = view.document
// only get URL when necessary in case Blob.js hasn't overridden it yet
, get_URL = function() {
return view.URL || view.webkitURL || view;
}
, save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
, can_use_save_link = "download" in save_link
, click = function(node) {
var event = new MouseEvent("click");
node.dispatchEvent(event);
}
, is_safari = /constructor/i.test(view.HTMLElement) || view.safari
, is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent)
, throw_outside = function(ex) {
(view.setImmediate || view.setTimeout)(function() {
throw ex;
}, 0);
}
, force_saveable_type = "application/octet-stream"
// the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
, arbitrary_revoke_timeout = 1000 * 40 // in ms
, revoke = function(file) {
var revoker = function() {
if (typeof file === "string") { // file is an object URL
get_URL().revokeObjectURL(file);
} else { // file is a File
file.remove();
}
};
setTimeout(revoker, arbitrary_revoke_timeout);
}
, dispatch = function(filesaver, event_types, event) {
event_types = [].concat(event_types);
var i = event_types.length;
while (i--) {
var listener = filesaver["on" + event_types[i]];
if (typeof listener === "function") {
try {
listener.call(filesaver, event || filesaver);
} catch (ex) {
throw_outside(ex);
}
}
}
}
, auto_bom = function(blob) {
// prepend BOM for UTF-8 XML and text/* types (including HTML)
// note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type});
}
return blob;
}
, FileSaver = function(blob, name, no_auto_bom) {
if (!no_auto_bom) {
blob = auto_bom(blob);
}
// First try a.download, then web filesystem, then object URLs
var
filesaver = this
, type = blob.type
, force = type === force_saveable_type
, object_url
, dispatch_all = function() {
dispatch(filesaver, "writestart progress write writeend".split(" "));
}
// on any filesys errors revert to saving with object URLs
, fs_error = function() {
if ((is_chrome_ios || (force && is_safari)) && view.FileReader) {
// Safari doesn't allow downloading of blob urls
var reader = new FileReader();
reader.onloadend = function() {
var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;');
var popup = view.open(url, '_blank');
if(!popup) view.location.href = url;
url=undefined; // release reference before dispatching
filesaver.readyState = filesaver.DONE;
dispatch_all();
};
reader.readAsDataURL(blob);
filesaver.readyState = filesaver.INIT;
return;
}
// don't create more object URLs than needed
if (!object_url) {
object_url = get_URL().createObjectURL(blob);
}
if (force) {
view.location.href = object_url;
} else {
var opened = view.open(object_url, "_blank");
if (!opened) {
// Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
view.location.href = object_url;
}
}
filesaver.readyState = filesaver.DONE;
dispatch_all();
revoke(object_url);
}
;
filesaver.readyState = filesaver.INIT;
if (can_use_save_link) {
object_url = get_URL().createObjectURL(blob);
setTimeout(function() {
save_link.href = object_url;
save_link.download = name;
click(save_link);
dispatch_all();
revoke(object_url);
filesaver.readyState = filesaver.DONE;
});
return;
}
fs_error();
}
, FS_proto = FileSaver.prototype
, saveAs = function(blob, name, no_auto_bom) {
return new FileSaver(blob, name || blob.name || "download", no_auto_bom);
}
;
// IE 10+ (native saveAs)
if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
return function(blob, name, no_auto_bom) {
name = name || blob.name || "download";
if (!no_auto_bom) {
blob = auto_bom(blob);
}
return navigator.msSaveOrOpenBlob(blob, name);
};
}
FS_proto.abort = function(){};
FS_proto.readyState = FS_proto.INIT = 0;
FS_proto.WRITING = 1;
FS_proto.DONE = 2;
FS_proto.error =
FS_proto.onwritestart =
FS_proto.onprogress =
FS_proto.onwrite =
FS_proto.onabort =
FS_proto.onerror =
FS_proto.onwriteend =
null;
return saveAs;
}(
typeof self !== "undefined" && self
|| typeof window !== "undefined" && window
|| this.content
));
// `self` is undefined in Firefox for Android content script context
// while `this` is nsIContentFrameMessageManager
// with an attribute `content` that corresponds to the window
if (typeof module !== "undefined" && module.exports) {
module.exports.saveAs = saveAs;
} else if ((typeof define !== "undefined" && define !== null) && (define.amd !== null)) {
define("FileSaver.js", function() {
return saveAs;
});
}
},{}],4:[function(require,module,exports){
function getJSONPromise(url) {
var promise = new Promise((resolve, reject) => {
var request = new XMLHttpRequest();
request.open('get', url, true);
request.responseType = 'text';
request.onload = function () {
if (request.status === 200) {
try {
resolve(JSON.parse(request.responseText));
} catch (error) {
reject(error);
}
} else {
reject('JSON could not be loaded ' + url);
}
};
request.send();
});
return promise;
}
module.exports = getJSONPromise;
},{}],5:[function(require,module,exports){
function getFormValues(formElement) {
var formElements = formElement.elements;
var formParams = {};
var i = 0;
var elem = null;
for (i = 0; i < formElements.length; i += 1) {
elem = formElements[i];
switch (elem.type) {
case 'submit':
break;
case 'radio':
if (elem.checked) {
formParams[elem.name] = elem.value;
}
break;
case 'checkbox':
if (elem.checked) {
formParams[elem.name] = elem.value;
}
break;
case 'select-multiple':
var selectValues = getSelectValues(elem);
if (selectValues.length > 0) {
formParams[elem.name] = selectValues;
}
break;
default:
if (elem.value !== undefined) {
formParams[elem.name] = elem.value;
}
}
}
return formParams;
}
function setFormValues(formElement, values) {
var formElements = formElement.elements;
var i = 0;
var elem = null;
for (i = 0; i < formElements.length; i += 1) {
elem = formElements[i];
switch (elem.type) {
case 'submit':
break;
case 'radio':
if (values[elem.name] === elem.value) {
elem.checked = true;
} else {
elem.checked = false;
}
break;
case 'checkbox':
if (values[elem.name] === elem.value) {
elem.checked = true;
} else {
elem.checked = false;
}
break;
case 'select-multiple':
if (values[elem.name]) {
setSelectValues(elem, values[elem.name]);
}
break;
default:
if (values[elem.name] !== undefined) {
elem.value = values[elem.name];
}
}
}
}
function setSelectValues(selectElem, values) {
var options = selectElem.options;
var opt;
for (var i = 0, iLen = options.length; i < iLen; i++) {
opt = options[i];
if (values.indexOf(opt.value) > -1) {
opt.selected = true;
} else {
opt.selected = false;
}
}
}
function getSelectValues(select) {
var result = [];
var options = select && select.options;
var opt;
for (var i = 0, iLen = options.length; i < iLen; i++) {
opt = options[i];
if (opt.selected) {
result.push(opt.value || opt.text);
}
}
return result;
}
function getSetFormValues() {
this.set = setFormValues;
this.get = getFormValues;
}
module.exports = getSetFormValues;
},{}],6:[function(require,module,exports){
'use strict';
var objType = require('obj-type');
module.exports = function (el, str) {
if (objType(el).indexOf('element') === -1) {
throw new TypeError('Expected an HTML DOM element as first argument');
}
if (typeof str !== 'string') {
throw new TypeError('Expected a string as second argument');
}
if (el.classList) {
return el.classList.contains(str);
}
return new RegExp('(^| )' + str + '( |$)', 'gi').test(el.className);
};
},{"obj-type":9}],7:[function(require,module,exports){
var tinySampleLoader = require('tiny-sample-loader');
var audioBufferInstrument = require('audio-buffer-instrument');
var getJSON = require('get-json-promise');
var buffers = {};
function getSamplePromises (ctx, data) {
var baseUrl = data.samples;
var promises = [];
data.filename = [];
var i = 0;
data.files.forEach(function (val) {
var filename = val.replace(/\.[^/.]+$/, "");
data.filename.push(filename);
var remoteUrl = baseUrl + val;
let loaderPromise = tinySampleLoader(ctx, remoteUrl);
loaderPromise.then(function (buffer) {
buffers[filename] = new audioBufferInstrument(ctx, buffer);
});
promises.push(loaderPromise);
});
return promises;
}
function sampleAllPromise(ctx, dataUrl) {
var promise = new Promise((resolve, reject) => {
var jsonPromise = getJSON(dataUrl);
jsonPromise.then(function(data) {
var samplePromises = getSamplePromises(ctx, data);
Promise.all(samplePromises).then(function() {
resolve({data: data, buffers: buffers});
}).catch(function (error) {
console.log(error);
});
}).catch (function (error) {
reject(error);
});
});
return promise;
}
function loadSampleSet(ctx, dataUrl) {
return sampleAllPromise(ctx, dataUrl);
}
module.exports = loadSampleSet;
},{"audio-buffer-instrument":2,"get-json-promise":4,"tiny-sample-loader":8}],8:[function(require,module,exports){
function sampleLoader (context, url) {
var promise = new Promise((resolve, reject) => {
var request = new XMLHttpRequest();
request.open('get', url, true);
request.responseType = 'arraybuffer';
request.onload = function () {
if(request.status === 200){
context.decodeAudioData(request.response, function (buffer) {
resolve(buffer);
});
} else {
reject('tiny-sample-loader request failed');
}
};
request.send();
});
return promise;
};
module.exports = sampleLoader;
},{}],9:[function(require,module,exports){
'use strict';
module.exports = function (obj) {
return Object.prototype.toString.call(obj).replace(/^\[object (.+)\]$/, '$1').toLowerCase();
};
},{}],10:[function(require,module,exports){
function selectElement(appendToID, selectID, options, selected) {
this.appendToID = appendToID;
this.selectID = selectID;
this.options = options;
this.selected = selected;
this.selectList;
this.create = function(cb) {
var appendToID = document.getElementById(this.appendToID);
this.selectList = document.createElement("select");
this.selectList.id = this.selectID;
appendToID.appendChild(this.selectList);
this.update(selectID, this.options, this.selected);
};
this.onChange = function (cb) {
this.selectList.addEventListener('change', function(){
cb(this.value)
});
}
this.update = function (elem, options, selected) {
this.delete(elem);
var selectList = document.getElementById(elem);
for (var key in options) {
var option = document.createElement("option");
option.value = key;
option.text = options[key];
selectList.appendChild(option);
if (key === selected) {
option.setAttribute('selected', true);
}
}
};
this.getSelected = function (elem) {
var selectList = document.getElementById(elem);
var opt;
for ( var i = 0, len = selectList.options.length; i < len; i++ ) {
opt = selectList.options[i];
if ( opt.selected === true ) {
return opt.value;
break;
}
}
return false;
};
this.delete = function (elem) {
var selectList=document.getElementById(elem);
for (var option in selectList){
selectList.remove(option);
}
};
this.getAsString = function () {
var element = document.getElementById(this.appendToID);
var elementHtml = element.outerHTML;
return elementHtml;
};
}
module.exports = selectElement;
},{}],11:[function(require,module,exports){
var WAAClock = require('./lib/WAAClock')
module.exports = WAAClock
if (typeof window !== 'undefined') window.WAAClock = WAAClock
},{"./lib/WAAClock":12}],12:[function(require,module,exports){
(function (process){
var isBrowser = (typeof window !== 'undefined')
var CLOCK_DEFAULTS = {
toleranceLate: 0.10,
toleranceEarly: 0.001
}
// ==================== Event ==================== //
var Event = function(clock, deadline, func) {
this.clock = clock
this.func = func
this._cleared = false // Flag used to clear an event inside callback
this.toleranceLate = clock.toleranceLate
this.toleranceEarly = clock.toleranceEarly
this._latestTime = null
this._earliestTime = null
this.deadline = null
this.repeatTime = null
this.schedule(deadline)
}
// Unschedules the event
Event.prototype.clear = function() {
this.clock._removeEvent(this)
this._cleared = true
return this
}
// Sets the event to repeat every `time` seconds.
Event.prototype.repeat = function(time) {
if (time === 0)
throw new Error('delay cannot be 0')
this.repeatTime = time
if (!this.clock._hasEvent(this))
this.schedule(this.deadline + this.repeatTime)
return this
}
// Sets the time tolerance of the event.
// The event will be executed in the interval `[deadline - early, deadline + late]`
// If the clock fails to execute the event in time, the event will be dropped.
Event.prototype.tolerance = function(values) {
if (typeof values.late === 'number')
this.toleranceLate = values.late
if (typeof values.early === 'number')
this.toleranceEarly = values.early
this._refreshEarlyLateDates()
if (this.clock._hasEvent(this)) {
this.clock._removeEvent(this)
this.clock._insertEvent(this)
}
return this
}
// Returns true if the event is repeated, false otherwise
Event.prototype.isRepeated = function() { return this.repeatTime !== null }
// Schedules the event to be ran before `deadline`.
// If the time is within the event tolerance, we handle the event immediately.
// If the event was already scheduled at a different time, it is rescheduled.
Event.prototype.schedule = function(deadline) {
this._cleared = false
this.deadline = deadline
this._refreshEarlyLateDates()
if (this.clock.context.currentTime >= this._earliestTime) {
this._execute()
} else if (this.clock._hasEvent(this)) {
this.clock._removeEvent(this)
this.clock._insertEvent(this)
} else this.clock._insertEvent(this)
}
Event.prototype.timeStretch = function(tRef, ratio) {
if (this.isRepeated())
this.repeatTime = this.repeatTime * ratio
var deadline = tRef + ratio * (this.deadline - tRef)
// If the deadline is too close or past, and the event has a repeat,
// we calculate the next repeat possible in the stretched space.
if (this.isRepeated()) {
while (this.clock.context.currentTime >= deadline - this.toleranceEarly)
deadline += this.repeatTime
}
this.schedule(deadline)
}
// Executes the event
Event.prototype._execute = function() {
if (this.clock._started === false) return
this.clock._removeEvent(this)
if (this.clock.context.currentTime < this._latestTime)
this.func(this)
else {
if (this.onexpired) this.onexpired(this)
console.warn('event expired')
}
// In the case `schedule` is called inside `func`, we need to avoid
// overrwriting with yet another `schedule`.
if (!this.clock._hasEvent(this) && this.isRepeated() && !this._cleared)
this.schedule(this.deadline + this.repeatTime)
}
// Updates cached times
Event.prototype._refreshEarlyLateDates = function() {
this._latestTime = this.deadline + this.toleranceLate
this._earliestTime = this.deadline - this.toleranceEarly
}
// ==================== WAAClock ==================== //
var WAAClock = module.exports = function(context, opts) {
var self = this
opts = opts || {}
this.tickMethod = opts.tickMethod || 'ScriptProcessorNode'
this.toleranceEarly = opts.toleranceEarly || CLOCK_DEFAULTS.toleranceEarly
this.toleranceLate = opts.toleranceLate || CLOCK_DEFAULTS.toleranceLate
this.context = context
this._events = []
this._started = false
}
// ---------- Public API ---------- //
// Schedules `func` to run after `delay` seconds.
WAAClock.prototype.setTimeout = function(func, delay) {
return this._createEvent(func, this._absTime(delay))
}
// Schedules `func` to run before `deadline`.
WAAClock.prototype.callbackAtTime = function(func, deadline) {
return this._createEvent(func, deadline)
}
// Stretches `deadline` and `repeat` of all scheduled `events` by `ratio`, keeping
// their relative distance to `tRef`. In fact this is equivalent to changing the tempo.
WAAClock.prototype.timeStretch = function(tRef, events, ratio) {
events.forEach(function(event) { event.timeStretch(tRef, ratio) })
return events
}
// Removes all scheduled events and starts the clock
WAAClock.prototype.start = function() {
if (this._started === false) {
var self = this
this._started = true
this._events = []
if (this.tickMethod === 'ScriptProcessorNode') {
var bufferSize = 256
// We have to keep a reference to the node to avoid garbage collection
this._clockNode = this.context.createScriptProcessor(bufferSize, 1, 1)
this._clockNode.connect(this.context.destination)
this._clockNode.onaudioprocess = function () {
process.nextTick(function() { self._tick() })
}
} else if (this.tickMethod === 'manual') null // _tick is called manually
else throw new Error('invalid tickMethod ' + this.tickMethod)
}
}
// Stops the clock
WAAClock.prototype.stop = function() {
if (this._started === true) {
this._started = false
this._clockNode.disconnect()
}
}
// ---------- Private ---------- //
// This function is ran periodically, and at each tick it executes
// events for which `currentTime` is included in their tolerance interval.
WAAClock.prototype._tick = function() {
var event = this._events.shift()
while(event && event._earliestTime <= this.context.currentTime) {
event._execute()
event = this._events.shift()
}
// Put back the last event
if(event) this._events.unshift(event)
}
// Creates an event and insert it to the list
WAAClock.prototype._createEvent = function(func, deadline) {
return new Event(this, deadline, func)
}
// Inserts an event to the list
WAAClock.prototype._insertEvent = function(event) {
this._events.splice(this._indexByTime(event._earliestTime), 0, event)
}
// Removes an event from the list
WAAClock.prototype._removeEvent = function(event) {
var ind = this._events.indexOf(event)
if (ind !== -1) this._events.splice(ind, 1)
}
// Returns true if `event` is in queue, false otherwise
WAAClock.prototype._hasEvent = function(event) {
return this._events.indexOf(event) !== -1
}
// Returns the index of the first event whose deadline is >= to `deadline`
WAAClock.prototype._indexByTime = function(deadline) {
// performs a binary search
var low = 0
, high = this._events.length
, mid
while (low < high) {
mid = Math.floor((low + high) / 2)
if (this._events[mid]._earliestTime < deadline)
low = mid + 1
else high = mid
}
return low
}
// Converts from relative time to absolute time
WAAClock.prototype._absTime = function(relTime) {
return relTime + this.context.currentTime
}
// Converts from absolute time to relative time
WAAClock.prototype._relTime = function(absTime) {
return absTime - this.context.currentTime
}
}).call(this,require('_process'))
},{"_process":18}],13:[function(require,module,exports){
const loadSampleSet = require('load-sample-set');
const selectElement = require('select-element');
const getSetFormValues = require('get-set-form-values');
const adsrGainNode = require('adsr-gain-node');
const simpleTracker = require('./simple-tracker');
const FileSaver = require('file-saver');
const getSetControls = require('./get-set-controls');
const getSetAudioOptions = new getSetControls();
const ctx = new AudioContext();
const defaultTrack = require('./default-track');
var buffers;
var currentSampleData;
var storage;
function initializeSampleSet(ctx, dataUrl, track) {
var sampleSetPromise = loadSampleSet(ctx, dataUrl);
sampleSetPromise.then(function (data) {
buffers = data.buffers;
sampleData = data.data;
if (!track) {
track = storage.getTrack();
}
if (!track.settings.measureLength) {
track.settings.measureLength = 16;
}
currentSampleData = sampleData;
setupTrackerHtml(sampleData, track.settings.measureLength);
schedule.loadTrackerValues(track.beat);
schedule.setupEvents();
});
}
window.onload = function () {
let formValues = new getSetFormValues();
let form = document.getElementById("trackerControls");
formValues.set(form, defaultTrack.settings);
getSetAudioOptions.setTrackerControls(defaultTrack.settings);
initializeSampleSet(ctx, defaultTrack.settings.sampleSet, defaultTrack);
setupBaseEvents();
storage = new tracksLocalStorage();
storage.setupStorage();
};
var instrumentData = {};
function setupTrackerHtml(data, measureLength) {
instrumentData = data;
instrumentData.title = instrumentData.filename;
schedule.drawTracker(data.filename.length, measureLength, instrumentData);
return;
}
function disconnectNode(node, options) {
let totalLength =
options.attackTime + options.sustainTime + options.releaseTime;
setTimeout(() => {
node.disconnect();
}, totalLength * 1000);
}
function scheduleAudioBeat(beat, triggerTime) {
let instrumentName = instrumentData.filename[beat.rowId];
let instrument = buffers[instrumentName].get();
let options = getSetAudioOptions.getTrackerControls();
function play(source) {
source.detune.value = options.detune;
// Gain
let node = routeGain(source)
node = routeDelay(node);
// node = routeCompressor(node);
node.connect(ctx.destination);
source.start(triggerTime);
}
function routeGain (source) {
let gain = new adsrGainNode(ctx);
gain.mode = 'linearRampToValueAtTime';
let options = getSetAudioOptions.getTrackerControls();
let gainNode;
// Not enabled - default gain
if (!options.gainEnabled) {
gainNode = gain.getGainNode(triggerTime);
source.connect(gainNode);
return gainNode;
}
gain.setOptions(options);
gainNode = gain.getGainNode(triggerTime);
source.connect(gainNode);
return gainNode;
}