private void GetHDFAttributeDefs()
{
List <HDFAttributeDef[]> lstDefses = new List <HDFAttributeDef[]>();
//foreach (H4SDS dataset in H4File.Datasets)
for (int i = 0; i < H4File.Datasets.Length; i++)
{
H4SDS dataset = H4File.Datasets[i];
HDFAttributeDef[] attributeDef5s = new HDFAttributeDef[dataset.SDAttributes.Length];
lstDefses.Add(attributeDef5s);
//foreach (HDFAttribute attribute4 in dataset.SDAttributes)
for (int j = 0; j < dataset.SDAttributes.Length; j++)
{
HDFAttribute attribute4 = dataset.SDAttributes[j];
HDFAttributeDef attribute5 = new HDFAttributeDef();
attribute5.Name = attribute4.Name;
attribute5.Size = attribute4.Count;
attribute5.Type = Utility.GetAttrType(attribute4.DataType);
attribute5.Value = attribute4.Value;
attributeDef5s[j] = attribute5;
}
}
DatasetsAttributeDefs = lstDefses;
}
private static void ConvertHdf4To5BySds <T>(Hdf4FileAttrs hdf4FileAttrs, int nyf5, int nxf5, int k, int rank,
H5FileId fileId, string sdName, HDF4Helper.DataTypeDefinitions dtaDefinitions,
Action <string, int, int> messageAction)
{
T[,] data = new T[nyf5, nxf5];
//foreach (Hdf4FileAttr hdf4FileAttr in hdf4FileAttrs)
for (int i = 0; i < hdf4FileAttrs.Count; i++)
{
Hdf4FileAttr hdf4FileAttr = hdf4FileAttrs[i];
if (messageAction != null)
{
messageAction(String.Format("正在转换数据集 {0}", sdName), k, i);
}
H4SDS sd = hdf4FileAttr.H4File.Datasets[k];
GetDataByHdf4(sd, rank, hdf4FileAttr, data);
}
// 保存数据
// Describe the size of the array and create the data space for fixed
// size dataset.
long[] dims = new long[rank];
dims[0] = Convert.ToInt64(nyf5);
dims[1] = Convert.ToInt64(nxf5);
H5DataSpaceId dspaceId = H5S.create_simple(rank, dims);
H5T.H5Type h5Type = Utility.GetH5Type(dtaDefinitions);
// Define datatype for the data in the file.
H5DataTypeId dtypeId = H5T.copy(h5Type);
// Create the data set DATASETNAME.
H5DataSetId dsetId = H5D.create(fileId, sdName, dtypeId, dspaceId);
// Write the one-dimensional data set array
H5D.write(dsetId, new H5DataTypeId(h5Type), new H5Array <T>(data));//H5A
HDFAttributeDef[] attributeDef5s = hdf4FileAttrs[0].DatasetsAttributeDefs[k];
foreach (HDFAttributeDef attributeDef5 in attributeDef5s)
{
WriteHdfAttributes.WriteHdfAttribute(dsetId, attributeDef5);
}
// Close dataset and file.
H5D.close(dsetId);
}
private void button1_Click(object sender, EventArgs e)
{
var fname = "hdf4.hdf";
var hdf = new H4File(null, null, null, new long[] { 0, 0 });
hdf.Load(fname);
H4SDS[] sds = hdf.Datasets;
//测试读取的科学数据集及其属性
for (int i = 0; i < hdf.Num_Datasets; i++)
{
H4SDS sd = hdf.Datasets[i];
HDFAttribute[] attrs = sd.SDAttributes;
if (sd.Rank == 2)
{
int buffersize = (int)sd.Dimsizes[0] * sd.Dimsizes[1];
int typesize = HDFDataType.GetSize(sd.Datatype);
IntPtr ptr = Marshal.AllocHGlobal(buffersize * typesize);
sd.Read(new int[] { 0, 0 }, null, sd.Dimsizes, ptr);
short[] buffer = new short[buffersize];
Marshal.Copy(ptr, buffer, 0, buffersize);
Marshal.FreeHGlobal(ptr);
}
}
//byte[] head1024 = GetHeader1024Bytes(fname);
//object args = null;
//var hdf4Driver = new HDF4Driver();
//hdf4Driver.Open(fname, head1024, enumDataProviderAccess.ReadOnly, null);
//var prd = new Hdf4RasterDataProvider(fname, head1024, hdf4Driver, args);
//List<IRasterBand> _rasterBands = new List<IRasterBand>();
//for (int i = 0; i < sds.Length; i++)
//{
// CloudSatRasterBand rasterBand = new CloudSatRasterBand(prd, sds[i], i + 1);
// _rasterBands.Add(rasterBand);
// break;
//}
}
private static void GetDataByHdf4 <T>(H4SDS sd, int rank, Hdf4FileAttr hdf4FileAttr, T[,] data)
{
int xOffset = hdf4FileAttr.XOffset;
int yOffset = hdf4FileAttr.YOffset;
if (rank == 2)
{
int nx = hdf4FileAttr.XDim;
int ny = hdf4FileAttr.YDim;
int buffersize = nx * ny;
// int typesize = HDFDataType.GetSize(sd.Datatype);
T[] buffer = new T[buffersize];
GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
try
{
IntPtr bufferPtr = h.AddrOfPinnedObject();
sd.Read(new int[] { 0, 0 }, null, sd.Dimsizes, bufferPtr);
}
finally
{
h.Free();
}
// Data and input buffer initialization.
for (int j = 0; j < ny; j++)
{
for (int i = 0; i < nx; i++)
{
int index = j * nx + i;
int iIndex = i + xOffset;
int jIndex = j + yOffset;
data[jIndex, iIndex] = buffer[index];
}
}
}
}
private static void ConvertHdf4To5BySds <T>(Hdf4FileAttrs hdf4FileAttrs, int nyf5, int nxf5, int k, int rank,
H5FileId fileId, string sdName, HDF4Helper.DataTypeDefinitions dtaDefinitions, Action <string, int, int> messageAction,
SEnvelope envelopeNew, T fillValue, float dstResolution, ISpatialReference dstSpatialReference, ref UInt16[] rows, ref UInt16[] cols, ref Size srcStepSize, ref Size outSize)
{
T[,] data = new T[nyf5, nxf5];
H5DataSetId dsetId = null;
T[,] dataNew = null;
SDataByProject <T> dataByProject = null;
try
{
for (int i = 0; i < hdf4FileAttrs.Count; i++)
{
Hdf4FileAttr hdf4FileAttr = hdf4FileAttrs[i];
if (messageAction != null)
{
messageAction(String.Format("正在转换数据集 {0}", sdName), k, i);
}
H4SDS sd = hdf4FileAttr.H4File.Datasets[k];
GetDataByHdf4(sd, rank, hdf4FileAttr, data);
}
dataNew = data;
if (outSize.IsEmpty)
{
outSize = new Size(nxf5, nyf5);
}
if (dstSpatialReference != null && dstSpatialReference.IsSame(SpatialReference.GetDefault()))
{
if (rows == null && cols == null)
{
PrjEnvelope srcEnvelope = new PrjEnvelope(hdf4FileAttrs.Hdf4FileAttr.Envelope.XMin, hdf4FileAttrs.Hdf4FileAttr.Envelope.XMax, hdf4FileAttrs.Hdf4FileAttr.Envelope.YMin, hdf4FileAttrs.Hdf4FileAttr.Envelope.YMax);
PrjEnvelope outenvelpoe = new PrjEnvelope(envelopeNew.XMin, envelopeNew.XMax, envelopeNew.YMin, envelopeNew.YMax);
FilePrjSettings prjSetting = new FilePrjSettings();
prjSetting.OutEnvelope = outenvelpoe;
prjSetting.OutResolutionX = dstResolution;
prjSetting.OutResolutionY = dstResolution;
outSize = prjSetting.OutSize;
Size inSize = new Size(hdf4FileAttrs.Hdf4FileAttr.XDim, hdf4FileAttrs.Hdf4FileAttr.YDim);
float dstResoultion = dstResolution;
float srcResoultionX = (float)(hdf4FileAttrs.Hdf4FileAttr.CellWidth);
float srcResoultionY = (float)(hdf4FileAttrs.Hdf4FileAttr.CellHeight);
dataByProject = GetDataByProject <T>(dataNew, srcEnvelope, outenvelpoe, inSize, outSize, dstResoultion, srcResoultionX, srcResoultionY, fillValue, dstSpatialReference, out rows, out cols, out srcStepSize);
}
else
{
T[,] dstData = new T[outSize.Height, outSize.Width];
dataByProject = DoProject <T>(dataNew, fillValue, ref outSize, ref srcStepSize, dstData, rows, cols);
}
if (dataByProject != null)
{
dataNew = dataByProject.Data;
}
}
long[] dims = new long[rank];
dims[0] = Convert.ToInt64(outSize.Height);
dims[1] = Convert.ToInt64(outSize.Width);
H5DataSpaceId dspaceId = H5S.create_simple(rank, dims);
H5T.H5Type h5Type = Utility.GetH5Type(dtaDefinitions);
// Define datatype for the data in the file.
H5DataTypeId dtypeId = H5T.copy(h5Type);
// Create the data set DATASETNAME.
dsetId = H5D.create(fileId, sdName, dtypeId, dspaceId);
// Write the one-dimensional data set array
H5D.write(dsetId, new H5DataTypeId(h5Type), new H5Array <T>(dataNew));//H5A
HDFAttributeDef[] attributeDef5s = hdf4FileAttrs[0].DatasetsAttributeDefs[k];
foreach (HDFAttributeDef attributeDef5 in attributeDef5s)
{
WriteHdfAttributes.WriteHdfAttribute(dsetId, attributeDef5);
}
}
finally
{
// Close dataset and file.
if (dsetId != null)
{
H5D.close(dsetId);
}
if (data != null)
{
data = null;
}
if (dataNew != null)
{
dataNew = null;
}
GC.Collect();
}
}
private void ConvertHdf4To5(string f4name, string f5name, Action <string> messageAction)
{
var hdf = new H4File(null, null, null, new long[] { 0, 0 });
hdf.Load(f4name);
H4SDS[] sds = hdf.Datasets;
// Create a new file using H5F_ACC_TRUNC access,
// default file creation properties, and default file
// access properties.
H5FileId fileId = H5F.create(f5name, H5F.CreateMode.ACC_TRUNC);
//测试读取的科学数据集及其属性
//for (int k = 0; k < hdf.Num_Datasets; k++)
for (int k = 0; k < 1; k++)
{
H4SDS sd = hdf.Datasets[k];
HDFAttribute[] attrs = sd.SDAttributes;
string sdName = sd.Name;
int rank = sd.Rank;
if (messageAction != null)
{
messageAction(string.Format("正在转换数据集 {0}", sdName));
}
if (rank == 2)
{
int nx = sd.Dimsizes[0];
int ny = sd.Dimsizes[1];
int buffersize = nx * ny;
int typesize = HDFDataType.GetSize(sd.Datatype);
IntPtr ptr = Marshal.AllocHGlobal(buffersize * typesize);
sd.Read(new int[] { 0, 0 }, null, sd.Dimsizes, ptr);
short[] buffer = new short[buffersize];
Marshal.Copy(ptr, buffer, 0, buffersize);
Marshal.FreeHGlobal(ptr);
// Data and input buffer initialization.
int[,] data = new int[nx, ny];
for (int i = 0; i < nx; i++)
{
for (int j = 0; j < ny; j++)
{
int index = i * ny + j;
data[i, j] = buffer[index];
}
}
// Describe the size of the array and create the data space for fixed
// size dataset.
long[] dims = new long[rank];
dims[0] = Convert.ToInt64(nx);
dims[1] = Convert.ToInt64(ny);
H5DataSpaceId dspaceId = H5S.create_simple(rank, dims);
// Define datatype for the data in the file.
H5DataTypeId dtypeId = H5T.copy(H5T.H5Type.NATIVE_INT);
// Create the data set DATASETNAME.
H5DataSetId dsetId = H5D.create(fileId, sdName, dtypeId, dspaceId);
// Write the one-dimensional data set array
H5D.write(dsetId, new H5DataTypeId(H5T.H5Type.NATIVE_INT), new H5Array <int>(data));
// Close dataset and file.
H5D.close(dsetId);
H5F.close(fileId);
}
}
}
