@bddh/starling-realtime-client/cjs/RecordController.js

"use strict";Object.defineProperty(exports,"__esModule",{value:!0});var e=require("./_virtual/_rollupPluginBabelHelpers.js");function t(e,t,r,o){try{for(var n=(o=o||{})&&"number"==typeof o.index?o.index:0,i=o&&"number"==typeof o.offset?o.offset:0,a=0,s=n;s<e.length;s++)a+=e[s].length;a=Math.max(0,a-Math.floor(i));var u=t/r;u>1?a=Math.floor(a/u):(u=1,r=t);for(var c=new Int16Array(a),d=0,h=e.length;n<h;n++){for(var l=e[n],f=i,p=l.length;f<p;){var m=Math.floor(f),v=Math.ceil(f),x=f-m;c[d]=l[m]+(l[v]-l[m])*x,d++,f+=u}i=f-p}return{index:n,offset:i,sampleRate:r,data:c}}catch(e){console.log("转音错误了",e)}}function r(e){for(var t=e,r=new Int16Array(e.length),o=0;o<t.length;o++){var n=Math.max(-1,Math.min(1,t[o]));r[o]=n<0?32768*n:32767*n}return r}var o=function(o){function n(t){e.classCallCheck(this,n),e.defineProperty(this,"onAudioData",void 0),e.defineProperty(this,"onError",void 0),e.defineProperty(this,"audioContext",null),e.defineProperty(this,"processor",null),e.defineProperty(this,"mediaStream",null),e.defineProperty(this,"recording",!1),this.onAudioData=t.onAudioData,this.onError=t.onError}return e.createClass(n,[{key:"start",value:function(){return(o=o||e.asyncToGenerator(e.regeneratorRuntime().mark((function o(){var n,i=this;return e.regeneratorRuntime().wrap((function(e){for(;;)switch(e.prev=e.next){case 0:if(!this.recording){e.next=2;break}return e.abrupt("return");case 2:return e.prev=2,this.audioContext=new(window.AudioContext||window.webkitAudioContext)({sampleRate:16e3}),e.next=6,navigator.mediaDevices.getUserMedia({audio:!0,video:!1});case 6:this.mediaStream=e.sent,n=this.audioContext.createMediaStreamSource(this.mediaStream),this.processor=this.audioContext.createScriptProcessor(1024,1,1),n.connect(this.processor),this.processor.connect(this.audioContext.destination),this.processor.onaudioprocess=function(e){if(i.recording){var o=t([r(e.inputBuffer.getChannelData(0))],i.audioContext.sampleRate,16e3,null);o&&o.data&&i.onAudioData(o.data.buffer)}},this.recording=!0,e.next=18;break;case 15:e.prev=15,e.t0=e.catch(2),this.onError&&this.onError(e.t0);case 18:case"end":return e.stop()}}),o,this,[[2,15]])})))).apply(this,arguments)}},{key:"stop",value:function(){this.recording=!1,this.processor&&(this.processor.disconnect(),this.processor.onaudioprocess=null),this.audioContext&&this.audioContext.close(),this.mediaStream&&this.mediaStream.getTracks().forEach((function(e){e.stop()}))}}]),n}();exports.default=o;