wavesurfer.js/dist/plugin/wavesurfer.microphone.min.js

Interactive navigable audio visualization using Web Audio and Canvas

/*!
 * wavesurfer.js 2.0.5 (Sun Mar 04 2018 20:10:16 GMT+0100 (CET))
 * https://github.com/katspaugh/wavesurfer.js
 * @license BSD-3-Clause
 */
!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define("microphone",[],t):"object"==typeof exports?exports.microphone=t():(e.WaveSurfer=e.WaveSurfer||{},e.WaveSurfer.microphone=t())}("undefined"!=typeof self?self:this,function(){return function(e){function t(i){if(r[i])return r[i].exports;var n=r[i]={i:i,l:!1,exports:{}};return e[i].call(n.exports,n,n.exports,t),n.l=!0,n.exports}var r={};return t.m=e,t.c=r,t.d=function(e,r,i){t.o(e,r)||Object.defineProperty(e,r,{configurable:!1,enumerable:!0,get:i})},t.n=function(e){var r=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(r,"a",r),r},t.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},t.p="localhost:8080/dist/plugin/",t(t.s=5)}({5:function(e,t,r){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(t,"__esModule",{value:!0});var n=function(){function e(e,t){for(var r=0;r<t.length;r++){var i=t[r];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,r,i){return r&&e(t.prototype,r),i&&e(t,i),t}}(),o=function(){function e(t,r){var n=this;i(this,e),this.params=t,this.wavesurfer=r,this.active=!1,this.paused=!1,this.reloadBufferFunction=function(e){return n.reloadBuffer(e)};var o=function(e,t,r){var i=navigator.getUserMedia||navigator.webkitGetUserMedia||navigator.mozGetUserMedia||navigator.msGetUserMedia;return i?new Promise(function(t,r){i.call(navigator,e,t,r)}):Promise.reject(new Error("getUserMedia is not implemented in this browser"))};void 0===navigator.mediaDevices&&(navigator.mediaDevices={}),void 0===navigator.mediaDevices.getUserMedia&&(navigator.mediaDevices.getUserMedia=o),this.constraints=this.params.constraints||{video:!1,audio:!0},this.bufferSize=this.params.bufferSize||4096,this.numberOfInputChannels=this.params.numberOfInputChannels||1,this.numberOfOutputChannels=this.params.numberOfOutputChannels||1,this._onBackendCreated=function(){n.micContext=n.wavesurfer.backend.getAudioContext()}}return n(e,null,[{key:"create",value:function(t){return{name:"microphone",deferInit:!(!t||!t.deferInit)&&t.deferInit,params:t,instance:e}}}]),n(e,[{key:"init",value:function(){this.wavesurfer.on("backend-created",this._onBackendCreated),this.wavesurfer.backend&&this._onBackendCreated()}},{key:"destroy",value:function(){this.paused=!0,this.wavesurfer.un("backend-created",this._onBackendCreated),this.stop()}},{key:"start",value:function(){var e=this;navigator.mediaDevices.getUserMedia(this.constraints).then(function(t){return e.gotStream(t)}).catch(function(t){return e.deviceError(t)})}},{key:"togglePlay",value:function(){this.active?(this.paused=!this.paused,this.paused?this.pause():this.play()):this.start()}},{key:"play",value:function(){this.paused=!1,this.connect()}},{key:"pause",value:function(){this.paused=!0,this.disconnect()}},{key:"stop",value:function(){this.active&&(this.stopDevice(),this.wavesurfer.empty())}},{key:"stopDevice",value:function(){if(this.active=!1,this.disconnect(),this.stream){var e=this.detectBrowser();if(("chrome"===e.browser&&e.version>=45||"firefox"===e.browser&&e.version>=44||"edge"===e.browser)&&this.stream.getTracks)return void this.stream.getTracks().forEach(function(e){return e.stop()});this.stream.stop()}}},{key:"connect",value:function(){void 0!==this.stream&&(this.mediaStreamSource=this.micContext.createMediaStreamSource(this.stream),this.levelChecker=this.micContext.createScriptProcessor(this.bufferSize,this.numberOfInputChannels,this.numberOfOutputChannels),this.mediaStreamSource.connect(this.levelChecker),this.levelChecker.connect(this.micContext.destination),this.levelChecker.onaudioprocess=this.reloadBufferFunction)}},{key:"disconnect",value:function(){void 0!==this.mediaStreamSource&&this.mediaStreamSource.disconnect(),void 0!==this.levelChecker&&(this.levelChecker.disconnect(),this.levelChecker.onaudioprocess=void 0)}},{key:"reloadBuffer",value:function(e){this.paused||(this.wavesurfer.empty(),this.wavesurfer.loadDecodedBuffer(e.inputBuffer))}},{key:"gotStream",value:function(e){this.stream=e,this.active=!0,this.play(),this.fireEvent("deviceReady",e)}},{key:"deviceError",value:function(e){this.fireEvent("deviceError",e)}},{key:"extractVersion",value:function(e,t,r){var i=e.match(t);return i&&i.length>=r&&parseInt(i[r],10)}},{key:"detectBrowser",value:function(){var e={};return e.browser=null,e.version=null,e.minVersion=null,"undefined"!=typeof window&&window.navigator?navigator.mozGetUserMedia?(e.browser="firefox",e.version=this.extractVersion(navigator.userAgent,/Firefox\/([0-9]+)\./,1),e.minVersion=31,e):navigator.webkitGetUserMedia&&window.webkitRTCPeerConnection?(e.browser="chrome",e.version=this.extractVersion(navigator.userAgent,/Chrom(e|ium)\/([0-9]+)\./,2),e.minVersion=38,e):navigator.mediaDevices&&navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)?(e.browser="edge",e.version=this.extractVersion(navigator.userAgent,/Edge\/(\d+).(\d+)$/,2),e.minVersion=10547,e):(e.browser="Not a supported browser.",e):(e.browser="Not a supported browser.",e)}}]),e}();t.default=o,e.exports=t.default}})});
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