@da-web/js-audio-recorder/dist/recorder.js

js audio recorder plugin

/*!
 * 
 * js-audio-recorder - js audio recorder plugin
 * 
 * @version v1.2.1
 * @homepage https://github.com/2fps/recorder
 * @author 2fps <echoweb@126.com> (https://www.zhuyuntao.cn)
 * @license MIT
 *         
 */
!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.Recorder=e():t.Recorder=e()}(this,function(){return function(t){var e={};function n(r){if(e[r])return e[r].exports;var i=e[r]={i:r,l:!1,exports:{}};return t[r].call(i.exports,i,i.exports,n),i.l=!0,i.exports}return n.m=t,n.c=e,n.d=function(t,e,r){n.o(t,e)||Object.defineProperty(t,e,{enumerable:!0,get:r})},n.r=function(t){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(t,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(t,"__esModule",{value:!0})},n.t=function(t,e){if(1&e&&(t=n(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var r=Object.create(null);if(n.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var i in t)n.d(r,i,function(e){return t[e]}.bind(null,i));return r},n.n=function(t){var e=t&&t.__esModule?function(){return t.default}:function(){return t};return n.d(e,"a",e),e},n.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},n.p="",n(n.s=1)}([function(t,e,n){"use strict";function r(t,e,n){for(var r=0;r<n.length;r++)t.setUint8(e+r,n.charCodeAt(r))}Object.defineProperty(e,"__esModule",{value:!0}),e.compress=function(t,e,n){for(var r=e/n,i=Math.max(r,1),o=t.left,a=t.right,s=Math.floor((o.length+a.length)/r),u=new Float32Array(s),l=0,c=0;l<s;){var f=Math.floor(c);u[l]=o[f],l++,a.length&&(u[l]=a[f],l++),c+=i}return u},e.encodePCM=function(t,e,n){void 0===n&&(n=!0);var r=0,i=t.length*(e/8),o=new ArrayBuffer(i),a=new DataView(o);if(8===e)for(var s=0;s<t.length;s++,r++){var u=(l=Math.max(-1,Math.min(1,t[s])))<0?128*l:127*l;u=+u+128,a.setInt8(r,u)}else for(s=0;s<t.length;s++,r+=2){var l=Math.max(-1,Math.min(1,t[s]));a.setInt16(r,l<0?32768*l:32767*l,n)}return a},e.encodeWAV=function(t,e,n,i,o,a){void 0===a&&(a=!0);var s=n>e?e:n,u=o,l=new ArrayBuffer(44+t.byteLength),c=new 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i(e,t),e.prototype.setOption=function(t){void 0===t&&(t={}),this.setNewOption(t)},e.prototype.start=function(){return this.isrecording?Promise.reject():(this.isrecording=!0,this.startRecord())},e.prototype.pause=function(){this.isrecording&&!this.ispause&&(this.ispause=!0,this.pauseRecord())},e.prototype.resume=function(){this.isrecording&&this.ispause&&(this.ispause=!1,this.resumeRecord())},e.prototype.stop=function(){this.isrecording&&(this.isrecording=!1,this.ispause=!1,this.stopRecord())},e.prototype.play=function(){this.stop(),this.isplaying=!0,this.onplay&&this.onplay(),s.default.addPlayEnd(this.onplayend);var t=this.getWAV();t.byteLength>44&&s.default.play(t.buffer)},e.prototype.getPlayTime=function(){return s.default.getPlayTime()},e.prototype.pausePlay=function(){!this.isrecording&&this.isplaying&&(this.isplaying=!1,this.onpauseplay&&this.onpauseplay(),s.default.pausePlay())},e.prototype.resumePlay=function(){this.isrecording||this.isplaying||(this.isplaying=!0,this.onresumeplay&&this.onresumeplay(),s.default.resumePlay())},e.prototype.stopPlay=function(){this.isrecording||(this.isplaying=!1,this.onstopplay&&this.onstopplay(),s.default.stopPlay())},e.prototype.destroy=function(){return s.default.destroyPlay(),this.destroyRecord()},e.prototype.getRecordAnalyseData=function(){return this.getAnalyseData()},e.prototype.getPlayAnalyseData=function(){return s.default.getAnalyseData()},e.prototype.getPCM=function(){this.stop();var t=this.getData();return t=a.compress(t,this.inputSampleRate,this.outputSampleRate),a.encodePCM(t,this.oututSampleBits,this.littleEdian)},e.prototype.getPCMBlob=function(){return new Blob([this.getPCM()])},e.prototype.downloadPCM=function(t){void 0===t&&(t="recorder");var e=this.getPCMBlob();o.downloadPCM(e,t)},e.prototype.getWAV=function(){var t=this.getPCM();return a.encodeWAV(t,this.inputSampleRate,this.outputSampleRate,this.config.numChannels,this.oututSampleBits,this.littleEdian)},e.prototype.getWAVBlob=function(){return new Blob([this.getWAV()],{type:"audio/wav"})},e.prototype.downloadWAV=function(t){void 0===t&&(t="recorder");var e=this.getWAVBlob();o.downloadWAV(e,t)},e.prototype.download=function(t,e,n){o.download(t,e,n)},e.prototype.getChannelData=function(){var t=this.getPCM(),e=t.byteLength,n=this.littleEdian,r={left:null,right:null};if(2===this.config.numChannels){var i=new DataView(new ArrayBuffer(e/2)),o=new DataView(new ArrayBuffer(e/2));if(16===this.config.sampleBits)for(var a=0;a<e/2;a+=2)i.setInt16(a,t.getInt16(2*a,n),n),o.setInt16(a,t.getInt16(2*a+2,n),n);else for(a=0;a<e/2;a+=2)i.setInt8(a,t.getInt8(2*a)),o.setInt8(a,t.getInt8(2*a+1));r.left=i,r.right=o}else r.left=t;return 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this.flat()},t.prototype.clearRecordStatus=function(){this.lBuffer.length=0,this.rBuffer.length=0,this.size=0,this.fileSize=0,this.PCM=null,this.audioInput=null,this.duration=0},t.prototype.flat=function(){var t=null,e=new Float32Array(0);1===this.config.numChannels?t=new Float32Array(this.size):(t=new Float32Array(this.size/2),e=new Float32Array(this.size/2));for(var n=0,r=0;r<this.lBuffer.length;r++)t.set(this.lBuffer[r],n),n+=this.lBuffer[r].length;n=0;for(r=0;r<this.rBuffer.length;r++)e.set(this.rBuffer[r],n),n+=this.rBuffer[r].length;return{left:t,right:e}},t.prototype.initRecorder=function(){var t=this;this.clearRecordStatus(),this.context=new(window.AudioContext||window.webkitAudioContext),this.analyser=this.context.createAnalyser(),this.analyser.fftSize=2048;var e=this.context.createScriptProcessor||this.context.createJavaScriptNode;this.recorder=e.apply(this.context,[4096,this.config.numChannels,this.config.numChannels]),this.lastProcessAudioDuration=0,this.recorder.onaudioprocess=function(e){if(t.needRecord){var n,i=e.inputBuffer.getChannelData(0),a=null;if((n=100*Math.max.apply(Math,i))<(t.config.volumeThreshold||8)){if(console.debug("声音太小，不录"),t.speaking)t.speaking=!1,t.lastNoSpeakTime=Date.now();else if(-1!=t.silenceDurationNotify&&Date.now()-t.lastNoSpeakTime>t.silenceDurationNotify){if(t.silenceHasNotify)return;t.silenceHasNotify=!0,t.onsilence&&t.onsilence()}t.onprogress&&t.onprogress({duration:t.duration,fileSize:t.fileSize,vol:n,speaking:t.speaking})}else{if(t.speaking=!0,t.lBuffer.push(new Float32Array(i)),t.size+=i.length,2===t.config.numChannels&&(a=e.inputBuffer.getChannelData(1),t.rBuffer.push(new 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