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beaqle.js
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beaqle.js
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/*
BeaqleJS - HTML5 and JavaScript framework for listening tests
Copyright (C) 2011-2014 Sebastian Kraft
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
*/
// Enable JavaScript strict mode
"use strict";
// some linter configs
/*jshint browser: true */
/*jshint devel: true */
/*globals $:false */
// ###################################################################
// Audio pool object. Creates and manages a set of <audio> tags.
// constructor
var AudioPool = function (PoolID) {
this.NumPlayers = 0;
this.NumUsed = 0;
this.LoopAudio = 0;
this.LoopFade = false;
this.AutoReturn = true;
this.ABPos = [0, 100];
this.PoolID = PoolID;
this.IDPlaying = -1;
this.fadeInTime = 0.03;
this.fadeOutTime = 0.01;
this.fadeDelay = 0.01;
this.lastAudioPosition = 0;
this.positionUpdateInterval = 0.005;
// web audio is only supported for same origin
switch(window.location.protocol) {
case 'http:':
case 'https:':
// check web audio support
try {
var genContextClass = (window.AudioContext || window.webkitAudioContext || window.mozAudioContext || window.oAudioContext || window.msAudioContext);
this.waContext = new genContextClass();
this.gainNodes = new Array();
} catch(e) {
// API not supported
this.waContext = false;
}
break;
case 'file:':
this.waContext = false;
break;
}
// IE does not support the WebAudioAPI
if (clientIsIE() || clientIsSafari())
this.waContext = false;
// Firefox needs a longer delay before we start a fading curve,
// otherwise the fading is not recognized
if (clientIsFirefox())
this.fadeDelay = 0.05;
// set to false to manually disable WebAudioAPI support
//this.waContext = false;
// setup regular callback timer to check current playback position
var _this = this;
setInterval(this.loopCallback, this.positionUpdateInterval*1000, _this);
}
// insert audio pool into DOM
AudioPool.prototype.register = function() {
$('<div id="'+this.PoolID+'"></div>').appendTo('body');
}
// callback for timeUpdate event
AudioPool.prototype.loopCallback = function(_this) {
if (_this.IDPlaying!==-1) {
var audiotag = $('#'+_this.PoolID+' > #audio'+_this.IDPlaying).get(0);
// calculate progress including a look ahead for fade out or loop
var progress = 0;
progress = (audiotag.currentTime+_this.positionUpdateInterval+_this.fadeOutTime*2) / audiotag.duration * 100.0;
// if end is reached ...
if ((progress >= _this.ABPos[1]) && (!_this.LoopFade)) {
if (_this.LoopAudio == true) {
_this.loopReturn();
} else {
_this.pause();
}
}
}
}
// ---------------------------------------------------------
// overwrite these callbacks events after instantiation
// callback for time update event
AudioPool.prototype.onTimeUpdate = function(e) {}
// callback for error event
AudioPool.prototype.onError = function(e) {}
// callback for error event
AudioPool.prototype.onDataLoaded = function(e) {}
// ---------------------------------------------------------
// clear all files
AudioPool.prototype.clear = function(){
if (this.waContext!==false) {
this.gainNodes = new Array();
// maybe we also have to remove the connections?!
}
if (clientIsChrome()) {
//fixes bug in chromium. Otherwise old connections are not freed and maximum number of connections is reached soon
//https://code.google.com/p/chromium/issues/detail?id=234779
$('#'+this.PoolID+' >.audiotags').prop('src', false);
}
$('#'+this.PoolID+' >.audiotags').remove();
}
// add new file to pool
AudioPool.prototype.addAudio = function(path, ID){
var audiotag = document.createElement("audio");
audiotag.setAttribute('src', path);
audiotag.setAttribute('class', 'audiotags');
audiotag.setAttribute('id', "audio"+ID)
if (this.waContext!==false) {
var gainNode = this.waContext.createGain();
var source = this.waContext.createMediaElementSource(audiotag);
source.connect(gainNode);
gainNode.connect(this.waContext.destination);
gainNode.gain.value = 0.0000001; // fixes https://bugzilla.mozilla.org/show_bug.cgi?id=1213313
gainNode.gain.setValueAtTime(0.0000001, this.waContext.currentTime);
this.gainNodes[ID] = gainNode;
}
$(audiotag).off();
// external event handlers
$(audiotag).on("timeupdate", this.onTimeUpdate);
$(audiotag).on("loadeddata", this.onDataLoaded);
$(audiotag).on("error", this.onError);
$('#'+this.PoolID).append(audiotag);
if (!clientIsChrome()) {
audiotag.setAttribute('preload', 'auto');
} else {
//preload=none fixes bug in chromium. Otherwise old connections are not freed and maximum number of connections is reached soon
//https://code.google.com/p/chromium/issues/detail?id=234779
audiotag.setAttribute('preload', 'none');
audiotag.load();
}
}
// play audio with specified ID
AudioPool.prototype.play = function(ID){
var audiotag = $('#'+this.PoolID+' > #audio'+ID).get(0);
if ((this.AutoReturn===false) &&
(this.lastAudioPosition + this.fadeDelay <= (this.ABPos[1] / 100 * audiotag.duration)) &&
(this.lastAudioPosition >= (this.ABPos[0] / 100 * audiotag.duration)))
audiotag.currentTime = this.lastAudioPosition;
else
audiotag.currentTime = 0.000001 + this.ABPos[0] / 100.0 * audiotag.duration;
if (this.waContext!==false) {
var loopLen = (this.ABPos[1] - this.ABPos[0]) / 100.0 * audiotag.duration;
if (loopLen > this.fadeOutTime*2 + this.positionUpdateInterval*2) {
this.gainNodes[ID].gain.cancelScheduledValues(this.waContext.currentTime);
this.gainNodes[ID].gain.value = 0.0000001; // fixes https://bugzilla.mozilla.org/show_bug.cgi?id=1213313
this.gainNodes[ID].gain.setValueAtTime(0.0000001, this.waContext.currentTime);
this.gainNodes[ID].gain.setTargetAtTime(1.0, this.waContext.currentTime + this.fadeDelay, this.fadeInTime);
this.LoopFade = false;
audiotag.play();
}
} else {
audiotag.play();
}
this.IDPlaying = ID;
}
// return to loop begin
AudioPool.prototype.loopReturn = function() {
if (this.waContext!==false) {
// fade out
this.gainNodes[this.IDPlaying].gain.cancelScheduledValues(this.waContext.currentTime);
this.gainNodes[this.IDPlaying].gain.setTargetAtTime(0.0, this.waContext.currentTime + this.fadeDelay, this.fadeOutTime);
this.LoopFade = true;
var audiotag = $('#'+this.PoolID+' > #audio'+this.IDPlaying).get(0);
var currID = this.IDPlaying;
var _this = this;
// wait till fade out is done
setTimeout( function(){
_this.LoopFade = false;
audiotag.currentTime = 0.000001 + _this.ABPos[0] / 100.0 * audiotag.duration;
_this.gainNodes[_this.IDPlaying].gain.cancelScheduledValues(_this.waContext.currentTime);
_this.gainNodes[_this.IDPlaying].gain.setTargetAtTime(1.0, _this.waContext.currentTime + _this.fadeDelay, _this.fadeInTime);
},
(_this.fadeOutTime*2.0 + _this.fadeDelay)*1000.0 + 5.0
);
} else {
// return to the start marker
var audiotag = $('#'+this.PoolID+' > #audio'+this.IDPlaying).get(0);
audiotag.currentTime = 0.000001 + this.ABPos[0] / 100.0 * audiotag.duration;
audiotag.play();
}
}
// pause currently playing audio
AudioPool.prototype.pause = function() {
if (this.IDPlaying!==-1) {
var audiotag = $('#'+this.PoolID+' > #audio'+this.IDPlaying).get(0);
this.lastAudioPosition = audiotag.currentTime;
if ((this.waContext!==false) && (!audiotag.paused)) {
this.gainNodes[this.IDPlaying].gain.cancelScheduledValues(this.waContext.currentTime);
this.gainNodes[this.IDPlaying].gain.setTargetAtTime(0.0, this.waContext.currentTime + this.fadeDelay, this.fadeOutTime );
var _this = this;
var prevID = this.IDPlaying;
setTimeout( function(){if (_this.IDPlaying!==prevID) audiotag.pause();}, (_this.fadeOutTime*2.0 + _this.fadeDelay)*1000.0 + 5.0);
} else {
audiotag.pause();
}
this.IDPlaying = -1;
}
}
// set volume of <audio> tags
AudioPool.prototype.setVolume = function(vol) {
var vol = $('#VolumeSlider').slider('option', 'value') / 100;
var audioTags = $('#'+this.PoolID+' > audio');
for (var i = 0; i<audioTags.length; i++) {
audioTags[i].volume = vol;
}
}
// set loop mode
AudioPool.prototype.setLooped = function(loop) {
this.LoopAudio = loop;
}
// toggle loop mode
AudioPool.prototype.toggleLooped = function() {
this.LoopAudio = !this.LoopAudio;
}
// set auto return mode
AudioPool.prototype.setAutoReturn = function(autoReturn) {
this.AutoReturn = autoReturn;
}
// toggle auto return mode
AudioPool.prototype.toggleAutoReturn = function() {
this.AutoReturn = !this.AutoReturn;
}
// ###################################################################
// some helper functions
// logarithm to base 10
function log10(val) {
return Math.log(val) / Math.log(10);
}
// check for Internet Explorer version
function clientIsIE() {
if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;
var ieversion=new Number(RegExp.$1) // capture x.x portion and store as a number
return ieversion;
}
return 0;
}
// check for Firefox
function clientIsFirefox() {
return typeof InstallTrigger !== 'undefined';
}
// check for Google Chrome/Chromium
function clientIsChrome() {
return !!window.chrome && !clientIsOpera();
}
// check for Apple Safari
function clientIsSafari() {
return Object.prototype.toString.call(window.HTMLElement).indexOf('Constructor') > 0;
}
// check for Opera
function clientIsOpera() {
return !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
}
// get date and time formatted as YYYMMDD-hhmmss
function getDateStamp() {
var date = new Date();
function pad(num) {
num = num + '';
return num.length < 2 ? '0' + num : num;
}
return date.getFullYear() +
pad(date.getMonth() + 1) +
pad(date.getDate()) + '-' +
pad(date.getHours()) +
pad(date.getMinutes()) +
pad(date.getSeconds());
}
// provide a virtual download to text file with a specified file name
function saveTextAsFile(txt, fileName)
{
var fileBlob = new Blob([txt], {type:'text/plain'});
var downloadLink = document.createElement("a");
downloadLink.download = fileName;
downloadLink.innerHTML = "Download File";
// safari does not download text files but tries to open them in the browser
// so let's at least open a new window for that
if (clientIsSafari())
downloadLink.target = "_blank";
downloadLink.href = window.URL.createObjectURL(fileBlob);
downloadLink.onclick = function (event) {document.body.removeChild(event.target);};
downloadLink.style.display = "none";
// Firefox requires the link to be added to the DOM
// before it can be clicked.
document.body.appendChild(downloadLink);
downloadLink.click();
}
// shuffle array entries using the Fisher-Yates algorithm
// implementation inspired by http://bost.ocks.org/mike/shuffle/
function shuffleArray(array) {
var m = array.length, t, i;
// While there remain elements to shuffle…
while (m) {
// Pick a remaining element…
i = Math.floor(Math.random() * m--);
// And swap it with the current element.
t = array[m];
array[m] = array[i];
array[i] = t;
}
return array;
}
// jQuery UI based alert() dialog replacement
$.extend({ alert: function (message, title) {
$("<div></div>").dialog( {
buttons: { "Close": function () { $(this).dialog("close"); } },
close: function (event, ui) { $(this).remove(); },
resizable: false,
title: title,
modal: true
}).text(message);
}
});
// ###################################################################
// Listening test main object
// ###################################################################
// constructor and initialization
var ListeningTest = function (TestData) {
if (arguments.length == 0) return;
// check if config file is valid
if (typeof(TestData) == 'undefined') {
alert('Config file could not be loaded!');
}
// check for IE as it does not support the FileAPI-Blob constructor below version 9
if ((clientIsIE() > 0) && (clientIsIE() < 9)) {
$('#LoadOverlay').show();
$('#LoadOverlay').append('<p class="error">Internet Explorer version 8 and below is unfortunately not supported by BeaqleJS. Please update to a recent release or choose another browser.</p>');
return;
}
// Load and verify config
this.TestConfig = TestData;
this.setDefaults(this.TestConfig);
// some state variables
this.TestState = {
"CurrentTest": -1, // the current test index
"TestIsRunning": 0, // is true if test is running, false when finished or not yet started
"FileMappings": [], // json array with random file mappings
"Ratings": [], // json array with ratings
"EvalResults": [], // json array to store the evaluated test results
"AudiosInLoadQueue": -1,
"AudioLoadError": false
}
// create and configure audio pool
this.audioPool = new AudioPool('AudioPool');
this.audioPool.register();
this.audioPool.onTimeUpdate = $.proxy(this.audioTimeCallback, this);
this.audioPool.onError = $.proxy(this.audioErrorCallback, this);
this.audioPool.onDataLoaded = $.proxy(this.audioLoadedCallback, this);
this.audioPool.setLooped(this.TestConfig.LoopByDefault);
this.audioPool.setAutoReturn(this.TestConfig.AutoReturnByDefault);
this.checkBrowserFeatures();
// show introduction div
$('#TestTitle').html(this.TestConfig.TestName);
$('#TestIntroduction').show();
// setup buttons and controls
var handlerObject = this;
$('#VolumeSlider').slider({
min:0,
max:100,
value:100,
slide: function( event, ui ) {
var vol = log10($('#VolumeSlider').slider('option', 'value')) / 2;
handlerObject.audioPool.setVolume(vol);
}
});
if (this.TestConfig.EnableABLoop==true) {
$('#ABRange').slider({
range: true,
values: [ 0, 100],
min:0,
max:100,
slide: function( event, ui ) {
handlerObject.audioPool.ABPos = ui.values;
}
});
} else {
$('#ABRange').hide();
$('#ProgressBar').css('margin-top', $('#ProgressBar').height() + 'px');
}
$('#PauseButton').button();
if (this.TestConfig.LoopByDefault) {
$('#ChkLoopAudio').prop("checked", true);
} else {
$('#ChkLoopAudio').prop("checked", false);
}
$('#ChkLoopAudio').on('change', $.proxy(handlerObject.toggleLooping, handlerObject));
if (this.TestConfig.AutoReturnByDefault) {
$('#ChkAutoReturn').prop("checked", true);
} else {
$('#ChkAutoReturn').prop("checked", false);
}
$('#ChkAutoReturn').on('change', $.proxy(handlerObject.toggleAutoReturn, handlerObject));
$('#ProgressBar').progressbar();
$('#BtnNextTest').button();
$('#BtnNextTest').on('click', $.proxy(handlerObject.nextTest, handlerObject));
$('#BtnPrevTest').button();
$('#BtnPrevTest').on('click', $.proxy(handlerObject.prevTest, handlerObject));
$('#BtnStartTest').button();
$('#BtnSubmitData').button({ icons: { primary: 'ui-icon-signal-diag' }});
$('#BtnDownloadData').button({ icons: { primary: 'ui-icon-arrowthickstop-1-s' }});
// install handler to warn user when test is running and he tries to leave the page
var testHandle = this.TestState
window.onbeforeunload = function (e) {
if (testHandle.TestIsRunning==true) {
return 'The listening test is not yet finished!';
} else {
return;
}
}
}
// ###################################################################
ListeningTest.prototype.setDefaults = function(config) {
var defaults = {
"ShowFileIDs": false,
"ShowResults": false,
"LoopByDefault": true,
"AutoReturnByDefault": true,
"EnableABLoop": true,
"EnableOnlineSubmission": false,
"BeaqleServiceURL": "",
"SupervisorContact": "",
"RandomizeTestOrder": false,
"MaxTestsPerRun": -1,
"AudioRoot": ""
}
for (var property in defaults) {
if (config[property] === undefined)
config[property] = defaults[property];
}
}
// ###################################################################
ListeningTest.prototype.nextTest = function() {
this.pauseAllAudios();
// save ratings from last test
if (this.saveRatings(this.TestState.TestSequence[this.TestState.CurrentTest])==false)
return;
// stop time measurement
var stopTime = new Date().getTime();
this.TestState.Runtime[this.TestState.TestSequence[this.TestState.CurrentTest]] += stopTime - this.TestState.startTime;
// go to next test
if (this.TestState.CurrentTest<this.TestState.TestSequence.length-1) {
this.TestState.CurrentTest = this.TestState.CurrentTest+1;
this.runTest(this.TestState.TestSequence[this.TestState.CurrentTest]);
} else {
// if previous test was last one, ask before loading final page and then exit test
if (confirm('This was the last test. Do you want to finish?')) {
$('#TableContainer').hide();
$('#PlayerControls').hide();
$('#TestControls').hide();
$('#TestEnd').show();
$('#ResultsBox').html(this.formatResults());
if (this.TestConfig.ShowResults)
$("#ResultsBox").show();
else
$("#ResultsBox").hide();
$("#SubmitBox").show();
$("#SubmitBox > .submitEmail").hide();
if (this.TestConfig.EnableOnlineSubmission) {
$("#SubmitBox > .submitOnline").show();
$("#SubmitBox > .submitDownload").hide();
} else {
$("#SubmitBox > .submitOnline").hide();
if (this.TestConfig.SupervisorContact) {
$("#SubmitBox > .submitEmail").show();
$(".supervisorEmail").html(this.TestConfig.SupervisorContact);
}
if (this.browserFeatures.webAPIs['Blob']) {
$("#SubmitBox > .submitDownload").show();
} else {
$("#SubmitBox > .submitDownload").hide();
$("#ResultsBox").show();
}
}
}
return;
}
}
// ###################################################################
ListeningTest.prototype.prevTest = function() {
this.pauseAllAudios();
if (this.TestState.CurrentTest>0) {
// save ratings from last test
if (this.saveRatings(this.TestState.TestSequence[this.TestState.CurrentTest])==false)
return;
// stop time measurement
var stopTime = new Date().getTime();
this.TestState.Runtime[this.TestState.TestSequence[this.TestState.CurrentTest]] += stopTime - this.TestState.startTime;
// go to previous test
this.TestState.CurrentTest = this.TestState.CurrentTest-1;
this.runTest(this.TestState.TestSequence[this.TestState.CurrentTest]);
}
}
// ###################################################################
ListeningTest.prototype.startTests = function() {
// init linear test sequence
this.TestState.TestSequence = Array();
for (var i = 0; i < this.TestConfig.Testsets.length; i++)
this.TestState.TestSequence[i] = i;
// shorten and/or shuffle the sequence
if ((this.TestConfig.MaxTestsPerRun > 0) && (this.TestConfig.MaxTestsPerRun < this.TestConfig.Testsets.length)) {
this.TestConfig.RandomizeTestOrder = true;
this.TestState.TestSequence = shuffleArray(this.TestState.TestSequence);
this.TestState.TestSequence = this.TestState.TestSequence.slice(0, this.TestConfig.MaxTestsPerRun);
} else if (this.TestConfig.RandomizeTestOrder == true) {
this.TestState.TestSequence = shuffleArray(this.TestState.TestSequence);
}
this.TestState.Ratings = Array(this.TestConfig.Testsets.length);
this.TestState.Runtime = new Uint32Array(this.TestConfig.Testsets.length);
// this.TestState.Runtime.forEach(function(element, index, array){array[index] = 0});
this.TestState.startTime = 0;
// run first test
this.TestState.CurrentTest = 0;
this.runTest(this.TestState.TestSequence[this.TestState.CurrentTest]);
}
// ###################################################################
// prepares display to run test with number TestIdx
ListeningTest.prototype.runTest = function(TestIdx) {
this.pauseAllAudios();
if ((TestIdx<0) || (TestIdx>this.TestConfig.Testsets.length)) throw new RangeError("Test index out of range!");
this.audioPool.clear();
this.TestState.AudiosInLoadQueue = 0;
this.TestState.AudioLoadError = false;
this.createTestDOM(TestIdx);
// set current test name
$('#TestHeading').html(this.TestConfig.Testsets[TestIdx].Name + " (" + (this.TestState.CurrentTest+1) + " of " + this.TestState.TestSequence.length + ")");
$('#TestHeading').show();
// hide everything instead of load animation
$('#TestIntroduction').hide();
$('#TestControls').hide();
$('#TableContainer').hide();
$('#PlayerControls').hide();
$('#LoadOverlay').show();
// set some state variables
this.TestState.TestIsRunning = 1;
var handlerObject = this;
$('.stopButton').each( function() {
$(this).button();
$(this).on('click', $.proxy(handlerObject.pauseAllAudios, handlerObject));
});
$('.playButton').each( function() {
$(this).button();
var audioID = $(this).attr('rel');
$(this).on('click', $.proxy(function(event) {handlerObject.playAudio(audioID)}, handlerObject));
});
// load and apply already existing ratings
if (typeof this.TestState.Ratings[TestIdx] !== 'undefined') this.readRatings(TestIdx);
this.TestState.startTime = new Date().getTime();
}
// ###################################################################
// pause all audios
ListeningTest.prototype.pauseAllAudios = function () {
this.audioPool.pause();
$(".playButton").removeClass('playButton-active');
$('.rateSlider').parent().css('background-color', 'transparent');
}
// ###################################################################
// read ratings from TestState object
ListeningTest.prototype.readRatings = function (TestIdx) {
// overwrite and implement in inherited class
alert('Function readRatings() has not been implemented in your inherited class!');
}
// ###################################################################
// save ratings to TestState object
ListeningTest.prototype.saveRatings = function (TestIdx) {
// overwrite and implement in inherited class
alert('Function saveRatings() has not been implemented in your inherited class!');
}
// ###################################################################
// evaluate test and format/print the results
ListeningTest.prototype.formatResults = function () {
// overwrite and implement in inherited class
alert('Function formatResults() has not been implemented in your inherited class!');
}
// ###################################################################
// create DOM for test display
ListeningTest.prototype.createTestDOM = function (TestIdx) {
// overwrite and implement in inherited class
alert('Function createTestDOM() has not been implemented in your inherited class!');
}
// ###################################################################
// is called whenever an <audio> tag fires the onDataLoaded event
ListeningTest.prototype.audioLoadedCallback = function () {
this.TestState.AudiosInLoadQueue--;
// show test if all files finished loading and no errors occured
if ((this.TestState.AudiosInLoadQueue==0) && (this.TestState.AudioLoadError==false)) {
$('#TestControls').show();
$('#TableContainer').show();
$('#PlayerControls').show();
$('#LoadOverlay').hide();
}
}
// ###################################################################
// audio loading error callback
ListeningTest.prototype.audioErrorCallback = function(e) {
this.TestState.AudioLoadError = true;
var errorTxt = "<p>ERROR ";
switch (e.target.error.code) {
case e.target.error.MEDIA_ERR_NETWORK:
errorTxt += "Network problem, ";
break;
case e.target.error.MEDIA_ERR_DECODE:
errorTxt += "File corrupted or unsupported format, ";
break;
case e.target.error.MEDIA_ERR_SRC_NOT_SUPPORTED:
errorTxt += "Wrong URL or unsupported file format, ";
break;
default:
errorTxt += "Unknown error, ";
break;
}
errorTxt += e.target.src + "</p>";
$('#LoadOverlay').append(errorTxt);
}
// ###################################################################
// audio time update callback
ListeningTest.prototype.audioTimeCallback = function(e) {
var s = parseInt(e.target.currentTime % 60);
var m = parseInt((e.target.currentTime / 60) % 60);
if (m<10) m = "0"+m;
if (s<10) s = "0"+s;
$('#duration > span').html( m + ':' + s );
var progress = e.target.currentTime / e.target.duration * 100;
$('#ProgressBar').progressbar( "option", "value", progress);
}
// ###################################################################
// enable/disable looping for all audios
ListeningTest.prototype.toggleLooping = function () {
this.audioPool.toggleLooped();
}
// ###################################################################
// enable/disable auto return for all audios
ListeningTest.prototype.toggleAutoReturn = function () {
this.audioPool.toggleAutoReturn();
}
// ###################################################################
//play audio with specified html ID
ListeningTest.prototype.playAudio = function (id) {
this.audioPool.pause();
// reset all buttons and sliders
$('.rateSlider').parent().css('background-color', 'transparent');
$('.playButton').removeClass('playButton-active');
// highlight active slider and button
$(".rateSlider[rel="+id+"]").parent().css('background-color', '#D5E5F6');
$(".playButton[rel="+id+"]").addClass('playButton-active');
this.audioPool.play(id);
}
// ###################################################################
// add and load audio file with specified ID
ListeningTest.prototype.addAudio = function (TestIdx, fileID, relID) {
this.TestState.AudiosInLoadQueue += 1;
this.audioPool.addAudio(this.TestConfig.AudioRoot +
this.TestConfig.Testsets[TestIdx].Files[fileID],
relID)
}
// ###################################################################
// submit test results to server
ListeningTest.prototype.SubmitTestResults = function () {
var UserObj = new Object();
UserObj.UserName = $('#UserName').val();
UserObj.UserEmail = $('#UserEMail').val();
UserObj.UserComment = $('#UserComment').val();
var EvalResults = this.TestState.EvalResults;
EvalResults.push(UserObj)
var testHandle = this;
$.ajax({
type: "POST",
timeout: 5000,
url: testHandle.TestConfig.BeaqleServiceURL,
data: {'testresults':JSON.stringify(EvalResults), 'username':UserObj.UserName},
dataType: 'json'})
.done( function (response){
if (response.error==false) {
$('#SubmitBox').html("Your submission was successful.<br/><br/>");
testHandle.TestState.TestIsRunning = 0;
} else {
$('#SubmitError').show();
$('#SubmitError > #ErrorCode').html(response.message);
$("#SubmitBox > .submitOnline").hide();
if (testHandle.TestConfig.SupervisorContact) {
$("#SubmitBox > .submitEmail").show();
$(".supervisorEmail").html(testHandle.TestConfig.SupervisorContact);
}
if (testHandle.browserFeatures.webAPIs['Blob']) {
$("#SubmitBox > .submitDownload").show();
} else {
$("#SubmitBox > .submitDownload").hide();
$("#ResultsBox").show();
}
$('#SubmitData').button('option',{ icons: { primary: 'ui-icon-alert' }});
}
})
.fail (function (xhr, ajaxOptions, thrownError){
$('#SubmitError').show();
$('#SubmitError > #ErrorCode').html(xhr.status);
$("#SubmitBox > .submitOnline").hide();
if (testHandle.TestConfig.SupervisorContact) {
$("#SubmitBox > .submitEmail").show();
$(".supervisorEmail").html(testHandle.TestConfig.SupervisorContact);
}
if (testHandle.browserFeatures.webAPIs['Blob']) {
$("#SubmitBox > .submitDownload").show();
} else {
$("#SubmitBox > .submitDownload").hide();
$("#ResultsBox").show();
}
});
$('#BtnSubmitData').button('option',{ icons: { primary: 'load-indicator' }});
}
// ###################################################################
// submit test results to server
ListeningTest.prototype.DownloadTestResults = function () {
var UserObj = new Object();
UserObj.UserName = $('#UserName').val();
UserObj.UserEmail = $('#UserEMail').val();
UserObj.UserComment = $('#UserComment').val();
var EvalResults = this.TestState.EvalResults;
EvalResults.push(UserObj)
saveTextAsFile(JSON.stringify(EvalResults), getDateStamp() + "_" + UserObj.UserName + ".txt");
this.TestState.TestIsRunning = 0;
}
// ###################################################################
// Check browser capabilities
ListeningTest.prototype.checkBrowserFeatures = function () {
var features = new Object();
features.webAPIs = new Array();
features.webAPIs['webAudio'] = this.audioPool.waContext!==false;
features.webAPIs['Blob'] = !!window.Blob;
features.audioFormats = new Array();
var a = document.createElement('audio');
features.audioFormats['WAV'] = !!(a.canPlayType && a.canPlayType('audio/wav; codecs="1"').replace(/no/, ''));
features.audioFormats['FLAC'] = !!(a.canPlayType && a.canPlayType('audio/flac').replace(/no/, ''));
features.audioFormats['OGG'] = !!(a.canPlayType && a.canPlayType('audio/ogg; codecs="vorbis"').replace(/no/, ''));
features.audioFormats['MP3'] = !!(a.canPlayType && a.canPlayType('audio/mpeg;').replace(/no/, ''));
features.audioFormats['AAC'] = !!(a.canPlayType && a.canPlayType('audio/mp4; codecs="mp4a.40.2"').replace(/no/, ''));
this.browserFeatures = features;
}
// ###################################################################
// Get browser features formatted as a HTML string
ListeningTest.prototype.browserFeatureString = function () {
var featStr = "Available HTML5 browser features:";
if (this.browserFeatures.webAPIs['webAudio'])
featStr += " <span class='feature-available'>WebAudioAPI</span>, ";
else
featStr += " <span class='feature-not-available'>WebAudioAPI</span>, ";
if (this.browserFeatures.webAPIs['Blob'])
featStr += " <span class='feature-available'>BlobAPI</span>, ";
else
featStr += " <span class='feature-not-available'>BlobAPI</span>, ";
if (this.browserFeatures.audioFormats['WAV'])
featStr += " <span class='feature-available'>WAV</span>, ";
else
featStr += " <span class='feature-not-available'>WAV</span>, ";
if (this.browserFeatures.audioFormats['FLAC'])
featStr += " <span class='feature-available'>FLAC</span>, ";
else
featStr += " <span class='feature-not-available'>FLAC</span>, ";
if (this.browserFeatures.audioFormats['OGG'])
featStr += " <span class='feature-available'>Vorbis</span>, ";
else
featStr += " <span class='feature-not-available'>Vorbis</span>, ";
if (this.browserFeatures.audioFormats['MP3'])
featStr += " <span class='feature-available'>MP3</span>, ";
else
featStr += " <span class='feature-not-available'>MP3</span>, ";
if (this.browserFeatures.audioFormats['AAC'])
featStr += " <span class='feature-available'>AAC</span>";
else
featStr += " <span class='feature-not-available'>AAC</span>";
return featStr;
}
// ###################################################################
// MUSHRA test main object
// inherit from ListeningTest
function MushraTest(TestData) {
ListeningTest.apply(this, arguments);
}
MushraTest.prototype = new ListeningTest();
MushraTest.prototype.constructor = MushraTest;
// implement specific code
// ###################################################################
// create random mapping to test files
MushraTest.prototype.createFileMapping = function (TestIdx) {
var NumFiles = $.map(this.TestConfig.Testsets[TestIdx].Files, function(n, i) { return i; }).length;
var fileMapping = new Array(NumFiles);
$.each(this.TestConfig.Testsets[TestIdx].Files, function(index, value) {
do {
var RandFileNumber = Math.floor(Math.random()*(NumFiles));
if (RandFileNumber>NumFiles-1) RandFileNumber = NumFiles-1;
} while (typeof fileMapping[RandFileNumber] !== 'undefined');
if (RandFileNumber<0) alert(fileMapping);
fileMapping[RandFileNumber] = index;
});
this.TestState.FileMappings[TestIdx] = fileMapping;
}
// ###################################################################
// read ratings from TestState object
MushraTest.prototype.readRatings = function (TestIdx) {
if ((TestIdx in this.TestState.Ratings)==false) return false;
var testObject = this;
$(".rateSlider").each( function() {
var pos = $(this).attr('id').lastIndexOf('slider');
var fileNum = $(this).attr('id').substring(pos+6, $(this).attr('id').length);