zhywpt-sp/static/etc/kcBle/kcDataEncode.js

"use strict";
var _kcUtils = require("./kcUtils.js")
  , _kcUtils2 = _interopRequireDefault(_kcUtils);
function _interopRequireDefault(e) {
  return e && e.__esModule ? e : {
    default: e
  }
}
function encode(content, dataType, cmdType, ST = "33", isPrivate = false) {
  // 1. 获取当前协议类型（0=国标GB协议，1=微信WX协议）
  var protocolType = _kcUtils2.default.getProtocolType();
  // 2. 构建ETC应用层数据帧
  var etcData = getETCData(content, dataType, cmdType, isPrivate);
  var encodedFrame;
  // 3. 根据协议类型选择编码方式
  if (protocolType === 0) {
    // 国标GB28181协议编码
    encodedFrame = encode_GB(etcData);
  } else if (protocolType === 1) {
    // 微信协议编码
    encodedFrame = encode_WX(etcData, ST);
  }
  console.log('Encoded Frame:', encodedFrame);
  return encodedFrame;
}
function getETCData(content, dataType, cmdType) {
  var r = ""
    , r = "A0" == cmdType || "A3" == cmdType || "A4" == cmdType || "82" == cmdType || "AC" == cmdType ? cmdType + dataType + (r = getCommand(content)) : cmdType + content;
  return _kcUtils2.default.showLog("组拼ETCData完毕：", r.length / 2, r),
    r
}
function getCommand(e) {
  var t, a = e, r = _kcUtils2.default.getDATA_TYPE(), e = e.length / 2, n = new ArrayBuffer(10), s = new DataView(n);
  return 0 == r ? (t = 256 < e ? (s.setInt8(0, 4 + e & 255),
    s.setInt8(1, 4 + e >> 8 & 255),
    s.setInt8(2, 128),
    s.setInt8(3, 130),
    s.setInt8(4, e >> 8 & 255),
    s.setInt8(5, 255 & e),
    n.slice(0, 6)) : 128 < e && e <= 256 ? (s.setInt8(0, 3 + e & 255),
      s.setInt8(1, 3 + e >> 8 & 255),
      s.setInt8(2, 128),
      s.setInt8(3, 129),
      s.setInt8(4, e),
      n.slice(0, 5)) : (s.setInt8(0, 2 + e & 255),
        s.setInt8(1, 2 + e >> 8 & 255),
        s.setInt8(2, 128),
        s.setInt8(3, e),
        n.slice(0, 4)),
    a = _kcUtils2.default.byteArray2hexStr(t) + a) : 1 == r && (s.setInt8(0, 255 & e),
      s.setInt8(1, e >> 8 & 255),
      t = n.slice(0, 2),
      a = _kcUtils2.default.byteArray2hexStr(t) + a),
    a
}
function encode_GB(e) {
  var t = {}
    , a = _kcUtils2.default.getPagLenMax()
    , r = parseInt(e.length / 2 / a)
    , n = (e.length / 2 % a != 0 && (r += 1),
      new ArrayBuffer(10));
  new DataView(n);
  t.serviceCode = 0,
    t.serviceInfo = "encode ok",
    t.serviceData = {},
    t.serviceData.dataEncode = new Array;
  for (var s = 0; s < r - 1; s++)
    t.serviceData.dataEncode[s] = e.substr(s * a * 2, 2 * a),
      t.serviceData.dataEncode[s] = getGBFrame(t.serviceData.dataEncode[s], s, r);
  return t.serviceData.dataEncode[r - 1] = e.substring((r - 1) * a * 2),
    t.serviceData.dataEncode[r - 1] = getGBFrame(t.serviceData.dataEncode[r - 1], r - 1, r),
    t
}
function encode_WX(e, ST = "33") {
  for (var t = {}, a = _kcUtils2.default.getPagLenMax(), r = parseInt(e.length / 2 / a), n = (e.length / 2 % a != 0 && (r += 1),
    t.serviceCode = 0,
    t.serviceInfo = "encode ok",
    t.serviceData = {},
    t.serviceData.dataEncode = new Array,
    0), n = 0; n < r - 1; n++)
    t.serviceData.dataEncode[n] = e.substr(n * a * 2, 2 * a),
      t.serviceData.dataEncode[n] = getWXFrame(t.serviceData.dataEncode[n], n, r, ST);
  return t.serviceData.dataEncode[r - 1] = e.substring((r - 1) * a * 2),
    t.serviceData.dataEncode[r - 1] = getWXFrame(t.serviceData.dataEncode[r - 1], r - 1, r, ST),
    t
}
function getWXFrame(rawData, currentFrameIndex, totalFrames, ST = "33") {
  // 初始化字节缓冲区和数据视图
  var buffer = new ArrayBuffer(10);
  var dataView = new DataView(buffer);
  var headerHex = "";
  var xorChecksum = 0;
  var SN = "01";
  var dataByteLength = rawData.length / 2; // 原始数据字节长度（16进制字符串长度/2）

  // --- 步骤1: 构建帧头序号 ---
  if (currentFrameIndex === 0) {
    // 首帧：序号 = 128 + (总帧数-1)
    dataView.setUint8(0, 128 + (totalFrames - 1 - currentFrameIndex) & 0xFF);
  } else {
    // 后续帧：序号 = (总帧数-1-当前帧索引)
    dataView.setUint8(0, (totalFrames - 1 - currentFrameIndex) & 0xFF);
  }
  headerHex = _kcUtils2.default.byteArray2hexStr(buffer).substring(0, 2);

  // --- 步骤2: 拼接基础协议头 ---
  var frameContent = ST + SN +              // 协议标识（固定值）
    headerHex +            // 帧序号（1字节）
    _kcUtils2.default.byte2hexStr(dataByteLength & 0xFF) + // 数据长度（1字节）
    rawData;               // 原始数据

  // --- 步骤3: 计算异或校验值（从第2字节开始）---
  var byteArray = _kcUtils2.default.hexStr2byteArray(frameContent);
  for (var i = 1; i < byteArray.length; i++) {
    xorChecksum ^= byteArray[i];
  }
  frameContent += _kcUtils2.default.byte2hexStr(xorChecksum); // 附加校验值
  var fullFrameLength = byteArray.length + 1; // 包含校验后的总长度

  // --- 步骤4: 动态构造完整帧结构 ---
  if (fullFrameLength > 127) {
    // 长帧格式：0x80 + 低7位长度，后跟高位长度
    dataView.setUint8(0, 0x80 | (fullFrameLength & 0x7F));
    dataView.setUint8(1, fullFrameLength >>> 7);
    headerHex = _kcUtils2.default.byteArray2hexStr(buffer).substring(0, 4);
    var totalFrameSize = fullFrameLength + 15; // 数据长 + 固定头尾（8+4+3）
    dataView.setUint8(0, (totalFrameSize >>> 8) & 0xFF);
    dataView.setUint8(1, totalFrameSize & 0xFF);
  } else {
    // 短帧格式：直接写入长度
    dataView.setUint8(0, fullFrameLength & 0xFF);
    headerHex = _kcUtils2.default.byteArray2hexStr(buffer).substring(0, 2);
    var totalFrameSize = fullFrameLength + 14; // 数据长 + 固定头尾（8+4+2）
    dataView.setUint8(0, (totalFrameSize >>> 8) & 0xFF);
    dataView.setUint8(1, totalFrameSize & 0xFF);
  }

  // --- 步骤5: 组装最终帧（微信协议固定结构）---
  return "FE01" +                          // 帧起始标识（2字节）
    _kcUtils2.default.byteArray2hexStr(buffer).substring(0, 4) + // 动态长度字段（2-4字节）
    "753100000A0012" +                // 固定协议头（微信设备标识，8字节）
    headerHex +                       // 动态帧头（序号+长度）
    frameContent +                    // 数据+校验
    "1800";                           // 帧结束标识（2字节）
}
function getWXFrame1(e, t, a) {
  for (var r = e, n = new ArrayBuffer(10), s = new DataView(n), i = "", l = 0, e = e.length / 2, d = (0 == t ? s.setInt8(0, 128 + (a - 1 - t & 255)) : s.setInt8(0, a - 1 - t & 255),
    r = "3301" + (i = _kcUtils2.default.byteArray2hexStr(n).substring(0, 2)) + _kcUtils2.default.byte2hexStr(255 & e) + r,
    _kcUtils2.default.hexStr2byteArray(r)), c = 1; c < d.length; c++)
    l ^= d[c];
  r += _kcUtils2.default.byte2hexStr(l);
  var o, a = _kcUtils2.default.hexStr2byteArray(r).length;
  return 127 < a ? (s.setInt8(0, 128 + (a % 128 & 255)),
    s.setInt8(1, a / 128 & 255),
    i = _kcUtils2.default.byteArray2hexStr(n).substring(0, 4),
    s.setInt8(0, (o = a + 8 + 4 + 3) >> 8 & 255)) : (s.setInt8(0, 255 & a),
      i = _kcUtils2.default.byteArray2hexStr(n).substring(0, 2),
      s.setInt8(0, (o = a + 8 + 4 + 2) >> 8 & 255)),
    s.setInt8(1, 255 & o),
    r = "FE01" + _kcUtils2.default.byteArray2hexStr(n).substring(0, 4) + "753100000A0012" + i + r + "1800"
}
function getGBFrame(e, t, a) {
  for (var r = e, n = new ArrayBuffer(10), s = new DataView(n), i = 0, e = e.length / 2, l = (0 == t ? (s.setInt8(0, 128 + (a >> 8 & 255)),
    s.setInt8(1, 255 & a)) : (s.setInt8(0, t + 1 >> 8 & 255),
      s.setInt8(1, t + 1 & 255)),
    s.setInt8(2, 255 & e),
    a = _kcUtils2.default.byteArray2hexStr(n).substring(0, 6),
    _kcUtils2.default.hexStr2byteArray(r = "50" + a + r)), d = 0; d < l.length; d++)
    i ^= l[d];
  return r += _kcUtils2.default.byte2hexStr(i)
}
module.exports = {
  encode: encode
};