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

Interactive navigable audio visualization using Web Audio and Canvas

/*!
 * wavesurfer.js microphone plugin 6.6.3 (2023-04-04)
 * https://wavesurfer-js.org
 * @license BSD-3-Clause
 */
!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define("WaveSurfer",[],t):"object"==typeof exports?exports.WaveSurfer=t():(e.WaveSurfer=e.WaveSurfer||{},e.WaveSurfer.microphone=t())}(self,(()=>(()=>{"use strict";var e={872:(e,t)=>{function r(e){return r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},r(e)}function i(e,t){for(var i=0;i<t.length;i++){var n=t[i];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,(o=n.key,a=void 0,a=function(e,t){if("object"!==r(e)||null===e)return e;var i=e[Symbol.toPrimitive];if(void 0!==i){var n=i.call(e,t||"default");if("object"!==r(n))return n;throw new TypeError("@@toPrimitive must return a primitive value.")}return("string"===t?String:Number)(e)}(o,"string"),"symbol"===r(a)?a:String(a)),n)}var o,a}Object.defineProperty(t,"__esModule",{value:!0}),t.default=void 0;var n=function(){function e(t,r){var i=this;!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e),this.params=t,this.wavesurfer=r,this.active=!1,this.paused=!1,this.browser=this.detectBrowser(),this.reloadBufferFunction=function(e){return i.reloadBuffer(e)};void 0===navigator.mediaDevices&&(navigator.mediaDevices={}),void 0===navigator.mediaDevices.getUserMedia&&(navigator.mediaDevices.getUserMedia=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"))}),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(){i.micContext=i.wavesurfer.backend.getAudioContext()}}var t,r,n;return t=e,n=[{key:"create",value:function(t){return{name:"microphone",deferInit:!(!t||!t.deferInit)&&t.deferInit,params:t,instance:e}}}],(r=[{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(){this.active=!1,this.disconnect(),this.stream&&this.stream.getTracks&&this.stream.getTracks().forEach((function(e){return e.stop()}))}},{key:"connect",value:function(){void 0!==this.stream&&("edge"===this.browser.browser&&(this.localAudioBuffer=this.micContext.createBuffer(this.numberOfInputChannels,this.bufferSize,this.micContext.sampleRate)),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),void 0!==this.localAudioBuffer&&(this.localAudioBuffer=void 0)}},{key:"reloadBuffer",value:function(e){if(!this.paused)if(this.wavesurfer.empty(),"edge"===this.browser.browser){var t,r;for(t=0,r=Math.min(this.localAudioBuffer.numberOfChannels,e.inputBuffer.numberOfChannels);t<r;t++)this.localAudioBuffer.getChannelData(t).set(e.inputBuffer.getChannelData(t));this.wavesurfer.loadDecodedBuffer(this.localAudioBuffer)}else 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={browser:null,version:null,minVersion:null};return"undefined"!=typeof window&&window.navigator?navigator.mozGetUserMedia?(e.browser="firefox",e.version=this.extractVersion(navigator.userAgent,/Firefox\/(\d+)\./,1),e.minVersion=31,e):navigator.webkitGetUserMedia?(e.browser="chrome",e.version=this.extractVersion(navigator.userAgent,/Chrom(e|ium)\/(\d+)\./,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):window.RTCPeerConnection&&navigator.userAgent.match(/AppleWebKit\/(\d+)\./)?(e.browser="safari",e.minVersion=11,e.version=this.extractVersion(navigator.userAgent,/AppleWebKit\/(\d+)\./,1),e):(e.browser="Not a supported browser.",e):(e.browser="Not a supported browser.",e)}}])&&i(t.prototype,r),n&&i(t,n),Object.defineProperty(t,"prototype",{writable:!1}),e}();t.default=n,e.exports=t.default}},t={};var r=function r(i){var n=t[i];if(void 0!==n)return n.exports;var o=t[i]={exports:{}};return e[i](o,o.exports,r),o.exports}(872);return r})()));
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