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

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