RecordPlayBackParse.js
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import ByteBuffer from 'libs/bytebuffer.min';
import Emiter from 'Emiter';
import MessageTypes from 'MessageTypes';
import Loger from 'Loger';
import pdu from 'pdus/index';
import PduType from 'pdus/PduType';
import PduConsts from 'pdus/PduConsts';
import ApeConsts from 'apes/ApeConsts';
import ArrayBufferUtil from 'libs/ArrayBufferUtil';
import Base64 from 'base64-js';
import GlobalConfig from 'GlobalConfig';
import EngineUtils from 'EngineUtils';
import TimerCounter from "TimerCounter";
let parseBuffer;
// 日志对象
const loger = Loger.getLoger('RecordPlayBackParse');
const Default=0;//未开始
const PLAY=1;//播放中
const PAUSE=2;//暂停
const SEEK=3;//seek
const STOP=4;//停止
class RecordPlayBackParse extends Emiter {
constructor() {
super();
loger.log("RecordPlayBackParse");
parseBuffer = new ByteBuffer(ByteBuffer.DEFAULT_CAPACITY, ByteBuffer.LITTLE_ENDIAN);
parseBuffer.clear();
console.log(parseBuffer);
this._recordPlaybackTimestamp = 0;//回放的时间
this._recordPlaybackMaxTime = 0;//录制回放的总时间
this._apes = {};
this._messages = {};
this._timerCounter = new TimerCounter();//计时器
this._timerCounter.addTimerCallBack(this._timerCounterUptate.bind(this), 1);
}
//method--------------------内部---------------------------------------------
// 注册Ape
registerApe(ape) {
this._apes[ape._session_id] = ape;
}
// 录制回放EverSocket底层消息处理
_everSocketMsgReceivedHandler(data) {
let pduMsg = pdu.decode_pdu(data);
let pduType = pduMsg.get("type");
let pduData = pduMsg.get("data");
//*************非常重要******************
//客户端发送的所有125消息，MCU收到之后会痛120把消息返回给客户端，
//所以需要把125消息type转换为120，因为MCU在录制的时候是直接录制客户端发送的消息而不是MCU转换之后的
if (pduType == PduType.RCPDU_UNIFORM_SEND_DATA_REQUEST) {
pduMsg.type = PduType.RCPDU_SEND_DATA_REQUEST;
pduType = PduType.RCPDU_SEND_DATA_REQUEST;
}
loger.log('pduType', pduType);
switch (pduType) {
case PduType.RCPDU_CONNECT_PROVIDER_RESPONSE:
//加入课堂请求返回数据处理
let joinConfPdu = pdu['RCConferenceJoinResponsePdu'].decode(pduData);
let pduResultCode = joinConfPdu.result;
loger.warn('RCPDU_CONNECT_PROVIDER_RESPONSE ->pduResultCode:' + pduResultCode);
switch (pduResultCode) {
case PduConsts.RET_SUCCESS:
//加入成功
this._updateMCUConfInfoDescription(joinConfPdu.classDescription);
this._emit(MessageTypes.CLASS_JOIN_MCU_SUCCESS, this.classInfo);
break;
case PduConsts.RET_FULL_CAPACITY:
this._emit(MessageTypes.MCU_ERROR, MessageTypes.ERR_CLASS_JOIN_FULL);
break;
default:
loger.warn('JoinConfPdu-未知类型-等待处理.', pduResultCode);
break
}
break;
case PduType.RCPDU_SEND_DATA_REQUEST:
//先判断当前消息属于哪个APE 根据 sessionId来判断
let ape = this._apes[pduMsg.sessionId];
let sessionLabel = ApeConsts(pduMsg.sessionId);
if (ape) {
let subTypeLabel = pdu.id2type(pduMsg.subType);
//loger.log('MCU-SecondLayer封装消息', 'sessionId', sessionLabel, pduMsg.sessionId, 'subtype', subTypeLabel, pduMsg.subType);
//ape广播事件，只要ape中监听就能收到
ape._emit(pduMsg.subType, pduMsg.data);
} else {
loger.warn(sessionLabel + '尚未注册');
}
break;
default:
loger.warn('PDU-未知类型-等待处理.', pduType);
}
}
//开启计时器
_startTimerCounter() {
this._timerCounter.startTimer();
}
//停止计时器
_stopTimerCounter() {
this._timerCounter.stopTimer();
}
_timerCounterUptate() {
this._recordPlaybackTimestamp = this._recordPlaybackTimestamp + 1;//计时
if(this._recordPlaybackTimestamp>=this._recordPlaybackMaxTime){
this._stopTimerCounter();
loger.log("录制结束...当前时间->", this._recordPlaybackTimestamp," 总时间->",this._recordPlaybackMaxTime);
this._emit(MessageTypes.RECORD_PLAYBACK_UPDATE,{"status":STOP});
return;
}
loger.log("录制回放中...", this._recordPlaybackTimestamp);
this._emit(MessageTypes.CLASS_UPDATE_TIMER, {"classTimestamp": this._recordPlaybackTimestamp});
//根据时间查找消息数据
this._searchMessageFromTime(this._recordPlaybackTimestamp);
}
//加载录制文件
readyRecordPlay() {
this._stopTimerCounter();
loger.log("读取回放数据");
//let url = `http://123.56.73.119:80/h5dev/20170306/1357644520_20170306.rec`;
let url = `http://${ GlobalConfig.RecordServerIP}:${ GlobalConfig.RecordServerPort}/${GlobalConfig.recordFileName}`;
console.log(url);
fetch(url, {
timeout: 90000 //加载文件超时时间1分30秒
})
.then(ret => {
if (ret.ok) {
return ret.arrayBuffer();
} else {
loger.error(`读取回放数据-网络异常.状态码:${ret.status}`);
this._emit(MessageTypes.MCU_ERROR, MessageTypes.ERR_GET_RECORD_PLAY_BACK_DATA_FAILED);
throw '';
}
})
.then(ret => {
if (ret) {
loger.log('读取回放数据-完成');
this._loadRecordDataSuccess(ret);
} else {
loger.warn('读取回放数据-失败.');
this._emit(MessageTypes.MCU_ERROR, MessageTypes.ERR_GET_RECORD_PLAY_BACK_DATA_FAILED);
}
})
.catch(err => {
loger.error(`读取回放数据.状态码:${err}`);
this._emit(MessageTypes.MCU_ERROR, MessageTypes.ERR_GET_RECORD_PLAY_BACK_DATA_FAILED);
});
}
_loadRecordDataSuccess(arrayBuffer) {
loger.log("获取录制回放数据的长度", arrayBuffer.byteLength);
if (parseBuffer) {
parseBuffer.clear();
parseBuffer.append(arrayBuffer);
//解析数据
this.parseArrayBuf();
}
}
//解析数据
parseArrayBuf() {
this._messages = {};
let byteLength = parseBuffer.offset;
parseBuffer.byteOffset = 0;
var position = 0;
while (position < byteLength) {
let timestamp = parseBuffer.readUInt32(position);
position += 4;//4字节
let byteLen = parseBuffer.readUInt32(position);
position += 4;//4字节
let byteData = parseBuffer.buffer.slice(position, (position + byteLen));
position += byteLen;
console.log(timestamp, byteLen, byteData);
let messageItem=this._messages[timestamp];
if(!messageItem){
this._messages[timestamp]=[];//数组存数据，因为有1秒内收到多个消息的情况，timestamp是按秒记录的
messageItem=this._messages[timestamp];
}
messageItem.push({"timestamp": timestamp, "byteData": byteData});
//记录最后一个数据的时间戳作为整个录制回放的总时间戳
this._recordPlaybackMaxTime=timestamp;
}
this._recordPlaybackTimestamp=0;
this._stopTimerCounter();
GlobalConfig.recordPlaybackMaxTime=this._recordPlaybackMaxTime;
loger.log("录制回放数据解析完成,录制回放的总时间长为->",this._recordPlaybackMaxTime);
console.log(this._messages);
this._emit(RecordPlayBackParse.CLASS_JOIN_RECORD_PLAYBACK_SUCCESS,{"recordPlaybackMaxTime":this._recordPlaybackMaxTime});
}
//根据时间查找数据
_searchMessageFromTime(_timestamp){
let msgDataArr=this._messages[_timestamp];
if(!msgDataArr){
//没有数据，需要查找当前时间点属于哪一个时间戳关键帧
}else {
//把时间点对应的数据发送,同一秒内有存在多个数据的情况
for(let i=0;i<msgDataArr.length;i++){
this._everSocketMsgReceivedHandler(msgDataArr[i].byteData);
}
}
}
//method------------外部接口-------------------------------------
startRecordPlayback(_param) {
this._startTimerCounter();
return {"code": ApeConsts.RETURN_SUCCESS,"data": "ok"};
//this._apes(MessageTypes.RECORD_PLAYBACK_UPDATE,{"status":});
}
stopRecordPlayback(_param) {
this._recordPlaybackTimestamp = 0;
this._stopTimerCounter();
return {"code": ApeConsts.RETURN_SUCCESS,"data": "ok"};
}
pauseRecordPlayback(_param) {
this._stopTimerCounter()
return {"code": ApeConsts.RETURN_SUCCESS,"data": "ok"};
}
seekRecordPlayback(_param) {
if(!_param||!_param.time){
return {"code": ApeConsts.RETURN_FAILED,"data": "参数不正确"};
}
this._stopTimerCounter()
this._recordPlaybackTimestamp = _param.time || 0;
this._startTimerCounter();
return {"code": ApeConsts.RETURN_SUCCESS,"data": "ok"};
}
}
RecordPlayBackParse.prototype.CLASS_JOIN_RECORD_PLAYBACK_SUCCESS = RecordPlayBackParse.CLASS_JOIN_RECORD_PLAYBACK_SUCCESS = 'class_join_recordPlayback_success';//加入录制回放成功
export default new RecordPlayBackParse;