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a=null;a=u((240&t[n])>>4,e),r[o]=65280&a,o++,a=u(15&t[n],e),r[o]=65280&a,o++}return r}},new c}function p(){var e=3,t=[-2048,-66,28,104,169,224,274,318,358,395,429,459,488,514,539,566,566,539,514,488,459,429,395,358,318,274,224,169,104,28,-66,-2048],r=[448,448,768,1248,1280,1312,1856,3200,4512,5728,7008,8960,11456,14080,16928,22272,22272,16928,14080,11456,8960,7008,5728,4512,3200,1856,1312,1280,1248,768,448,448],n=[0,0,0,0,0,512,512,512,512,512,1024,1536,2048,2560,3072,3072,3072,3072,2560,2048,1536,1024,512,512,512,512,512,0,0,0,0,0],o={},a=null;function u(i,u){var c,s,f,p,l,d,y,h=i,g=u;switch(h&=31,s=(c=a.predictorZero(o))>>1,f=c+a.predictorPole(o)>>1,p=a.stepSize(o),y=(l=(d=a.reconstruct(16&h,t[h],p))<0?f-(32767&d):f+d)-f+s,o=a.update(5,p,r[h],n[h],d,l,y,o),g){case e:return l<<2;default:return-1}}function c(){a=new i,o=a.g726InitState()}return c.prototype={decode:function(t){for(var r=new Int16Array(1.6*t.length),n=0,o=0;n<t.length-5;n+=5){var a=null;a=u(t[n]>>3,e),r[o]=65280&a,o++,a=u(t[n]<<2|t[n+1]>>6,e),r[o]=65280&a,o++,a=u(t[n+1]>>1,e),r[o]=65280&a,o++,a=u(t[n+1]<<4|t[n+2]>>4,e),r[o]=65280&a,o++,a=u(t[n+2]<<1|t[n+3]>>7,e),r[o]=65280&a,o++,a=u(t[n+3]>>2,e),r[o]=65280&a,o++,a=u(t[n+3]<<3|t[n+4]>>5,e),r[o]=65280&a,o++,a=u(t[n+4]>>0,e),r[o]=65280&a,o++}return r}},new c}var l=function(e){var t=null;switch(e){case 16:t=new c;break;case 24:t=new s;break;case 32:t=new f;break;case 40:t=new p;break;default:debug.log("wrong bits")}return t},d={"mpeg4-generic":86018,"G.723":86068,"G.729":86069,mpeg2:86016,"G.722.1":69660};function y(e){e=new Int16Array(e.buffer);for(var t=new Float32Array(e.length),r=0;r<e.length;r++)t[r]=e[r]/Math.pow(2,15);return t}var h=function(){var e=null,t=null,r="",n=null;function o(){}return o.prototype={open:function(t,o){if(d[r=t])e=Module._OpenAudioDecoder(d[t]);else switch(r){case"G.711A":case"G.711Mu":n=new u(r);break;case"G.726-16":case"G.726-24":case"G.726-32":case"G.726-40":n=new l(o)}},close:function(){d[r]&&(Module._CloseAudioDecoder(e),Module._free(t),t=null)},decodeByFFMPEG:function(n){var o=new Uint8Array(Module.HEAPU8.buffer,t,102400),a=new Uint8Array(102400),i=0;if("G.729"===r||"G.723"===r){for(var u="G.729"===r?10:20,c=Math.floor(n.length/u),s=0;s<c;s++){o.set(new Uint8Array(n.subarray(s*u,(s+1)*u)));var f=Module._DecodeAudioFrame(e,o.byteOffset,u,o.byteLength);a.set(new Uint8Array(o.subarray(0,f)),i),i+=f}a=y(new Uint8Array(a.subarray(0,i)))}else o.set(new Uint8Array(n)),i=Module._DecodeAudioFrame(e,o.byteOffset,n.byteLength,o.byteLength),a=new Uint8Array(o.subarray(0,i)),a="mpeg4-generic"!==r?y(a):new Float32Array(a.buffer);return a},decodeBySelf:function(e){var t;return t="PCM"===r?new Uint8Array(e):n.decode(e),"G.711A"!==r&&"G.711Mu"!==r&&(t=y(t)),t},decode:function(e){var n=null;return d[r]?(null===t&&(t=Module._malloc(102400)),n=this.decodeByFFMPEG(e)):n=this.decodeBySelf(e),n}},new o},g=function(e,t){var r=null,n=null,o=0,i=(new Uint8Array(7),{seconds:null,useconds:null}),u=new h;function c(){this.firstTime=0,this.lastMSW=0}return u.open(e,t),c.prototype={parseRTPData:function(e,t,n,a){var c=t[22];t[21],t[20],t.length;var s=t.subarray(24+c,t.length-8),f=(s.subarray(0,2),(t[19]<<24)+(t[18]<<16)+(t[17]<<8)+t[16]>>>0),p=Date.UTC("20"+(f>>26),(f>>22&15)-1,f>>17&31,f>>12&31,f>>6&63,63&f)/1e3;if(p-=28800,0==this.firstTime)this.firstTime=p,this.lastMSW=0,o=(t[21]<<8)+t[20],i.seconds=p,i.useconds=0;else{var l,d=(t[21]<<8)+t[20];l=d>o?d-o:d+65535-o,this.lastMSW+=l,p>this.firstTime&&(this.lastMSW-=1e3),this.firstTime=p,i.seconds=p,i.useconds=this.lastMSW,o=d}var y=u.decode(s);return{codec:"AAC",audio_type:a.audio_type,bufferData:y,rtpTimeStamp:1e3*i.seconds+i.useconds,samplingRate:r}},setCodecInfo:function(e){a.log("Set codec info. for AAC"),e.config,n=e.bitrate,r=e.ClockFreq},getCodecInfo:function(){return{bitrate:n,clockFreq:r}}},new c};importScripts("./../module/ffmpegasm.js"),Module.onRuntimeInitialized=function(){Module._RegisterAll(),w("WorkerReady")},addEventListener("message",function(e){var t=e.data;switch(t.type){case"sdpInfo":v=t.data.sdpInfo;t.data.aacCodecInfo;!function(e,t){for(var r=e,n=0;n<e.length;n++)if(-1===r[n].trackID.search("trackID=t")&&(b=null,"recvonly"===r[n].TalkTransType)){switch(r[n].codecName){case"G.726-16":case"G.726-24":case"G.726-32":case"G.726-40":var o=parseInt(r[n].codecName.substr(6,2));a.log(o),(b=new g(r[n].codecName,o)).setCodecInfo(r[n]);break;case"mpeg4-generic":case"G.723":case"G.729":case"mpeg2":case"G.722.1":case"PCM":case"G.711A":case"G.711Mu":(b=new g(r[n].codecName)).setCodecInfo(r[n])}var i=r[n].RtpInterlevedID;if(m[i]=b,null!=b)return}}(v,0,t.data.mp4Codec);break;case"MediaData":var r=t.data.rtspInterleave[1];if("undefined"!==typeof m[r]){var n=t.data,o=m[r].parseRTPData(n.rtspInterleave,n.payload,T,t.info);null!==o&&"undefined"!==typeof o&&null!==o.streamData&&"undefined"!==typeof o.streamData&&(o.streamData=null),w("render",o)}}},!1);var m=[],v=null,b=null,T=!1;function w(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},r={type:e,codec:t.codec,audio_type:t.audio_type,data:t.bufferData,rtpTimeStamp:t.rtpTimeStamp,samplingRate:t.samplingRate||8e3};if("render"===e)postMessage(r,[t.bufferData.buffer]);else if("backup"===e){postMessage({type:e,data:t})}else postMessage(r)}}]);
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