public void Dispose()
{
if (_file_id != -1)
{
//释放内存
}
int istat = HDF4Helper.SDend(_sd_id);
istat = HDF4API.Vend(_file_id);
istat = HDF4API.Hclose(_file_id);
if (_datasets != null)
{
foreach (H4SDS sds in _datasets)
{
sds.Dispose();
}
}
if (_vdatas != null)
{
foreach (H4Vdata vdata in _vdatas)
{
vdata.Dispose();
}
}
}
public unsafe void TestVData()
{
StringBuilder vdata_name = new StringBuilder();
StringBuilder vdata_class = new StringBuilder();
StringBuilder fields;
int file_id, vdata_id, istat;
int n_records, interlace, vdata_size, vdata_ref;
string filename = @"E:\Smart\CloudArgs\cloudsat\2007101034511_05065_CS_2B-GEOPROF_GRANULE_P_R04_E02.hdf";
file_id = HDF4API.Hopen(filename, DFACC.DFACC_READ, 0);
istat = HDF4API.Vstart(file_id);
vdata_ref = -1;
vdata_ref = HDF4API.VSgetid(file_id, vdata_ref);
vdata_id = HDF4API.VSattach(file_id, vdata_ref, "r");
fields = new StringBuilder(60);
istat = HDF4API.VSinquire(vdata_id, out n_records, out interlace, fields, out vdata_size, vdata_name);
istat = HDF4API.VSgetclass(vdata_id, vdata_class);
istat = HDF4API.VSsetfields(vdata_id, fields.ToString());
//fixed (float* bp = databuf)
//{
// IntPtr ptr = (IntPtr)bp;
// istat = HDF4API.VSread(vdata_id, ptr, n_records, INTERLACE_MODE.FULL_INTERLACE);
//}
IntPtr ptr = Marshal.AllocHGlobal(n_records * vdata_size * 8);
//GCHandle handle = GCHandle.Alloc(databuf);
istat = HDF4API.VSread(vdata_id, ptr, n_records, INTERLACE_MODE.FULL_INTERLACE);
//handle.Free();
float[] databuf = new float[vdata_size];
Marshal.Copy(ptr, databuf, 0, vdata_size);
Marshal.FreeHGlobal(ptr);
istat = HDF4API.VSdetach(vdata_id);
istat = HDF4API.Vend(file_id);
istat = HDF4API.Hclose(file_id);
Console.WriteLine(istat);
}