wavesurfer.js

<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/mediaelement.js</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../prettify.css" /> <link rel="stylesheet" href="../base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="../index.html">all files</a> / <a href="index.html">src/</a> mediaelement.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 3.53% Statements 3/85 </div> <div class='fl pad1y space-right2'> 0% Branches 0/37 </div> <div class='fl pad1y space-right2'> 0% Functions 0/26 </div> <div class='fl pad1y space-right2'> 3.57% Lines 3/84 </div> </div> </div> <div class='status-line low'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222</td><td class="line-coverage quiet">    1×   1×                                                                                                                                                                                                                                                                                                                                                                                                                                               1×  </td><td class="text"><pre class="prettyprint lang-js">'use strict';   WaveSurfer.MediaElement = Object.create(WaveSurfer.WebAudio);   WaveSurfer.util.extend(WaveSurfer.MediaElement, { init: function (params) { this.params = params;   // Dummy media to catch errors this.media = { currentTime: 0, duration: 0, paused: true, playbackRate: 1, play: function () {}, pause: function () {} };   this.mediaType = params.mediaType.toLowerCase(); this.elementPosition = params.elementPosition; this.setPlaybackRate(this.params.audioRate); this.createTimer(); },     /** * Create a timer to provide a more precise `audioprocess' event. */ createTimer: function () { var my = this; var playing = false;   var onAudioProcess = function () { if (my.isPaused()) { return; }   my.fireEvent('audioprocess', my.getCurrentTime());   // Call again in the next frame var requestAnimationFrame = window.requestAnimationFrame || window.webkitRequestAnimationFrame; requestAnimationFrame(onAudioProcess); };   this.on('play', onAudioProcess); },   /** * Create media element with url as its source, * and append to container element. * @param {String} url path to media file * @param {HTMLElement} container HTML element * @param {Array} peaks array of peak data */ load: function (url, container, peaks) { var my = this;   var media = document.createElement(this.mediaType); media.controls = this.params.mediaControls; media.autoplay = this.params.autoplay || false; media.preload = 'auto'; media.src = url; media.style.width = '100%';   var prevMedia = container.querySelector(this.mediaType); if (prevMedia) { container.removeChild(prevMedia); } container.appendChild(media);   this._load(media, peaks); },   /** * Load existing media element. * @param {MediaElement} elt HTML5 Audio or Video element * @param {Array} peaks array of peak data */ loadElt: function (elt, peaks) { var my = this;   var media = elt; media.controls = this.params.mediaControls; media.autoplay = this.params.autoplay || false;   this._load(media, peaks); },   /** * Private method called by both load (from url) * and loadElt (existing media element). * @param {MediaElement} media HTML5 Audio or Video element * @param {Array} peaks array of peak data * @private */ _load: function (media, peaks) { var my = this;   // load must be called manually on iOS, otherwise peaks won't draw // until a user interaction triggers load --> 'ready' event media.load();   media.addEventListener('error', function () { my.fireEvent('error', 'Error loading media element'); });   media.addEventListener('canplay', function () { my.fireEvent('canplay'); });   media.addEventListener('ended', function () { my.fireEvent('finish'); });   this.media = media; this.peaks = peaks; this.onPlayEnd = null; this.buffer = null; this.setPlaybackRate(this.playbackRate); },   isPaused: function () { return !this.media || this.media.paused; },   getDuration: function () { var duration = this.media.duration; if (duration >= Infinity) { // streaming audio duration = this.media.seekable.end(0); } return duration; },   getCurrentTime: function () { return this.media && this.media.currentTime; },   getPlayedPercents: function () { return (this.getCurrentTime() / this.getDuration()) || 0; },   /** * Set the audio source playback rate. */ setPlaybackRate: function (value) { this.playbackRate = value || 1; this.media.playbackRate = this.playbackRate; },   seekTo: function (start) { if (start != null) { this.media.currentTime = start; } this.clearPlayEnd(); },   /** * Plays the loaded audio region. * * @param {Number} start Start offset in seconds, * relative to the beginning of a clip. * @param {Number} end End offset in seconds, * relative to the beginning of a clip. */ play: function (start, end) { this.seekTo(start); this.media.play(); end && this.setPlayEnd(end); this.fireEvent('play'); },   /** * Pauses the loaded audio. */ pause: function () { this.media && this.media.pause(); this.clearPlayEnd(); this.fireEvent('pause'); },   setPlayEnd: function (end) { var my = this; this.onPlayEnd = function (time) { if (time >= end) { my.pause(); my.seekTo(end); } }; this.on('audioprocess', this.onPlayEnd); },   clearPlayEnd: function () { if (this.onPlayEnd) { this.un('audioprocess', this.onPlayEnd); this.onPlayEnd = null; } },   getPeaks: function (length) { if (this.buffer) { return WaveSurfer.WebAudio.getPeaks.call(this, length); } return this.peaks || []; },   getVolume: function () { return this.media.volume; },   setVolume: function (val) { this.media.volume = val; },   destroy: function () { this.pause(); this.unAll(); this.media && this.media.parentNode && this.media.parentNode.removeChild(this.media); this.media = null; } });   //For backwards compatibility WaveSurfer.AudioElement = WaveSurfer.MediaElement;  </pre></td></tr> </table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Sat Oct 01 2016 11:49:33 GMT+0200 (CEST) </div> </div> <script src="../prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); } }; </script> <script src="../sorter.js"></script> </body> </html>