/// <summary>
/// 从文件中读出指定通道的数据片段，支持复杂读取
/// </summary>
/// <param name="channelNo">指定的通道，从 0 开始</param>
/// <param name="start">开始点</param>
/// <param name="stride">每次向后多少点</param>
/// <param name="count">读多少次</param>
/// <param name="block">每次读多少个连续点</param>
/// <returns></returns>
public double[] LoadDataFromFileComplex(int channelNo, ulong start, ulong stride, ulong count, ulong block = 1)
{
if (!IsParamsRight(channelNo, start, stride, count, block))
{
return(null);
}
try
{
myH5File.Open(dataFilePath);
myH5Dataset = myH5File.GetDataset("channel" + channelNo.ToString());
double[] data = (double[])myH5Dataset.ComplexRead1DimChunkDataset(start, stride, count, block);
myH5Dataset.Close();
myH5File.Close();
return(data);
}
catch
{
throw new Exception("Something wrong with Data Read, may be you can adjust your params and try again.");
}
}
/// <summary>
/// 依照 BinData 签名的构造函数
/// </summary>
/// <param name="dataFileDirectory">HDF5 文件所在文件夹</param>
/// <param name="name">HDF5 文件名不带后缀</param>
public DataReader(string dataFileDirectory, string name)
{
this.name = name;
this.dataFilePath = dataFileDirectory + name + ".hdf5";
myH5File = new HDF5File();
myH5File.Open(this.dataFilePath);
myH5Group = myH5File.GetGroup("Attribute");
// double 转 object 后，object 不能直接转 int，需要先转 double 再转 int
double d = (double)myH5Group.GetAttribute("ChannelCount");
channelCount = (int)d;
d = (double)myH5Group.GetAttribute("SampleCount");
sampleCount = (int)d;
sampleRate = (double)myH5Group.GetAttribute("SampleRate");
startTime = (double)myH5Group.GetAttribute("StartTime");
createTime = (double)myH5Group.GetAttribute("CreateTime");
myH5Group.Close();
myH5File.Close();
}