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128 lines
4.2 KiB
128 lines
4.2 KiB
2 years ago
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var bReAudio=false;
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var audioDC=null;
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const AUDIO_START_STR="audio start";
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const AUDIO_END_STR="audio end"
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const AUDIO_DECODEC_TYPE_STR="decodctype";
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// const PACKET_LEN_STR="Packetslen";
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// const PACKET_COUNT_STR="packets";
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// const AUDIO_PACKET_PTS="audiopts";
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// const AUDIO_PACKET_REM_STR="rem";
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var decodctype="";
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var audiopts=0;
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var audiodata=null;
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var audiodatalen=0;
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var audiopacket=0;
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var audioreceivet1=new Date().getTime();
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function initAudioDC(pc) {
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console.log("initAACDC",Date());
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audioDC = pc.createDataChannel("audiodc");
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audioDC.onmessage = function (event) {
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// console.log(bReAudio,":",event.data)
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if(bReAudio){
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if(isString(event.data)) {
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console.log("reveive: "+event.data)
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if(event.data.indexOf(AUDIO_END_STR)!=-1){
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bReAudio=false;
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console.log("frame ok",":",event.data," len:"+audiodatalen)
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if(audiodatalen>0){
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// const framepacket=new Uint8Array(audiodata)
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const audiot2 = new Date().getTime()-audioreceivet1;
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console.log("receive time:"+audiot2+" len:"+audiodatalen);
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mseCallback(audiodata);
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//scriptNodeCallback(audiodata,len);
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// var data={
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// audiopts: audiopts,
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// size: audiodatalen,
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// decodctype: decodctype,
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// packet: audiodata
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// };
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// var req = {
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// t: ksendPlayerAudioFrameReq,
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// l: audiodatalen,
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// d: data
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// };
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// player.postMessage(req,[req.d.packet]);
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audiodata=null;
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audiodatalen=0;
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audiopacket=0;
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audioreceivet1=new Date().getTime();
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}
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return;
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}
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}else{
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if (audiodata != null) {
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audiodata=appendBuffer(audiodata,event.data);
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} else if (event.data.byteLength < expectLength) {
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audiodata = event.data.slice(0);
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} else {
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audiodata=event.data;
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}
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audiodatalen+=event.data.byteLength;
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audiopacket++;
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console.log("packet: "+audiopacket+": t len"+audiodatalen)
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return;
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}
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}
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if(isString(event.data)) {
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let startstring = event.data
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console.log("reveive: "+startstring)
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if(startstring.indexOf(AUDIO_START_STR)!=-1){
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// console.log(event.data );
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const startarray=startstring.split(",");
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// startstr := "audio start ,decodctype:" + decodctypestr + ",Packetslen:" + strconv.Itoa(glength) + ",packets:" + strconv.Itoa(count) + ",rem:" + strconv.Itoa(rem)
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for(let i=0;i<startarray.length;i++){
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const parakv=startarray[i].split(":");
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if(parakv!==null){
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switch(parakv[0]){
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case AUDIO_START_STR:
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break;
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case PACKET_PTS:
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audiopts=parseInt(parakv[1])
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break;
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case AUDIO_DECODEC_TYPE_STR:
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decodctype=parakv[1]
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break;
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}
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}
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}
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// string.split(":")
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bReAudio=true;
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audiopacket=0;
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return;
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}
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}
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};
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audioDC.onopen = function () {
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console.log("audio datachannel open");
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// setAudioDecoder(1) //mse 0 contex
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// playAudio();
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// var req = {
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// t: kInitPlayerReq,
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// };
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// player.postMessage(req);
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bWorking = true;
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};
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audioDC.onclose = function () {
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console.log("audio datachannel close");
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bWorking=false;
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};
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}
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