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