public override List <DCMAbstractType> Decode(byte[] data, ref uint idx)
{
//打开filename文件，将文件内容读到缓冲区byte[] data
using (FileStream fs = File.OpenRead(filename))
{
data = new byte[fs.Length];
fs.Read(data, 0, (int)fs.Length);
}
//跳过128字节前导符(idx=128)，读取4字节的”DICM”
idx = 128;
//***
idx += 4;
//用ExplicitVRLittleEndian对象实例化filemeta对象，通过其Decode方法从data中读取头元素
syntax = new ExplicitVRLittleEndian();
filemeta = new DCMFileMeta(syntax);
filemeta.Decode(data, ref idx);
//读取(0002,0010)头元素即filemeta[DicomTags.TransferSyntaxUid]的值，
//在tsFactory中找到对应的数据集传输语法对象赋给基类的syntax字段
DCMDataElement synelem = (DCMDataElement)filemeta[DicomTags.TransferSyntaxUid];
syntax = tsFactory[synelem.ReadValue <String>()[0].Replace("\0", "")];
//调用base.Decode方法解码数据集
base.Decode(data, ref idx);
return(items);
}
public TransferSyntaxes()
{
TSs[0] = new ImplicitVRLittleEndian();
TSs[1] = new ExplicitVRLittleEndian();
TSs[2] = new ExplicitVRBigEndian();
}
