/// <summary>
///
/// </summary>
/// <param name="reader"></param>
/// <param name="config"></param>
/// <returns></returns>
public JT808CarDVRUpPackage Deserialize(ref JT808MessagePackReader reader, IJT808Config config)
{
JT808CarDVRUpPackage value = new JT808CarDVRUpPackage();
int currentPosition = reader.ReaderCount;
value.Begin = reader.ReadUInt16();
value.CommandId = reader.ReadByte();
value.DataLength = reader.ReadUInt16();
value.KeepFields = reader.ReadByte();
if (value.DataLength > 0)
{
if (config.JT808_CarDVR_Up_Factory.Map.TryGetValue(value.CommandId, out var instance))
{
//4.2.处理消息体
dynamic attachImpl = JT808MessagePackFormatterResolverExtensions.JT808DynamicDeserialize(instance, ref reader, config);
value.Bodies = attachImpl;
}
}
var(CalculateXorCheckCode, RealXorCheckCode) = reader.ReadCarDVRCheckCode(currentPosition);
if (!config.SkipCarDVRCRCCode)
{
if (RealXorCheckCode != CalculateXorCheckCode)
{
throw new JT808Exception(JT808ErrorCode.CarDVRCheckCodeNotEqual, $"{reader.RealCheckXorCode}!={reader.CalculateCheckXorCode}");
}
}
value.CheckCode = reader.ReadByte();
return(value);
}
/// <summary>
///
/// </summary>
/// <param name="reader"></param>
/// <param name="writer"></param>
/// <param name="config"></param>
public void Analyze(ref JT808MessagePackReader reader, Utf8JsonWriter writer, IJT808Config config)
{
JT808CarDVRUpPackage value = new JT808CarDVRUpPackage();
writer.WriteStartObject("行车记录仪上行数据包");
int currentPosition = reader.ReaderCount;
value.Begin = reader.ReadUInt16();
writer.WriteNumber($"[{value.Begin.ReadNumber()}]起始字头", value.Begin);
value.CommandId = reader.ReadByte();
//出错标志位
value.ErrorFlag = value.CommandId == 0xFA || value.CommandId == 0xFB;
if (!value.ErrorFlag)
{
writer.WriteString($"[{value.CommandId.ReadNumber()}]命令字", ((JT808CarDVRCommandID)value.CommandId).ToString());
value.DataLength = reader.ReadUInt16();
writer.WriteNumber($"[{value.DataLength.ReadNumber()}]数据块长度", value.DataLength);
}
else
{
writer.WriteString($"[{value.CommandId.ReadNumber()}]出错标志字", value.CommandId.ToString());
}
value.KeepFields = reader.ReadByte();
writer.WriteNumber($"[{value.KeepFields.ReadNumber()}]保留字", value.KeepFields);
if (value.DataLength > 0)
{
if (config.JT808_CarDVR_Up_Factory.Map.TryGetValue(value.CommandId, out var instance))
{
//4.2.处理消息体
writer.WriteStartObject(((JT808CarDVRCommandID)value.CommandId).ToString());
instance.Analyze(ref reader, writer, config);
writer.WriteEndObject();
}
}
var(CalculateXorCheckCode, RealXorCheckCode) = reader.ReadCarDVRCheckCode(currentPosition);
value.CheckCode = reader.ReadByte();
if (RealXorCheckCode != CalculateXorCheckCode)
{
writer.WriteString($"[{value.CheckCode.ReadNumber()}]校验位错误", $"{reader.RealCheckXorCode}!={reader.CalculateCheckXorCode}");
}
else
{
writer.WriteNumber($"[{value.CheckCode.ReadNumber()}]校验位", value.CheckCode);
}
writer.WriteEndObject();
}