public void Read(string filename)
{
using (FileStream stream = new FileStream(filename, FileMode.Open))
{
using (BinaryReader br = new BinaryReader(stream))
{
byte[] awxLevel1HeaderBytes = br.ReadBytes(40);
L1Header = new AWXLevel1Header();
L1Header.Read(new MemoryStream(awxLevel1HeaderBytes));
switch (L1Header.ProductType)
{
case 1:
L2Header = new AWXLevel2HeaderImageGeostationary();
break;
case 2:
L2Header = new AWXLevel2HeaderImagePolarOrbit();
break;
default:
L2Header = new AWXLevel2HeaderImagePolarOrbit();
break;
}
byte[] awxLevel2HeaderBytes = br.ReadBytes(L1Header.Level2HeaderLength);
L2Header.Read(new MemoryStream(awxLevel2HeaderBytes));
switch (L1Header.ProductType)
{
case 1:
AWXLevel2HeaderImage L2HeaderImageGeostationary = L2Header as AWXLevel2HeaderImage;
if (L2HeaderImageGeostationary.ToningTableDataBlockLength
+ L2HeaderImageGeostationary.CalibrationDataBlockLength
+ L2HeaderImageGeostationary.LocationDataBlockLength > 0)
{
L2HeaderEx = new AWXLevel2HeaderExImage(
L2HeaderImageGeostationary.ToningTableDataBlockLength,
L2HeaderImageGeostationary.CalibrationDataBlockLength,
L2HeaderImageGeostationary.LocationDataBlockLength,
new CalibrationDataBlockGeostationary());
L2HeaderEx.Read(stream);
}
break;
case 2:
AWXLevel2HeaderImage L2HeaderImagePolarOrbit = L2Header as AWXLevel2HeaderImage;
if (L2HeaderImagePolarOrbit.ToningTableDataBlockLength
+ L2HeaderImagePolarOrbit.CalibrationDataBlockLength
+ L2HeaderImagePolarOrbit.LocationDataBlockLength > 0)
{
L2HeaderEx = new AWXLevel2HeaderExImage(
L2HeaderImagePolarOrbit.ToningTableDataBlockLength,
L2HeaderImagePolarOrbit.CalibrationDataBlockLength,
L2HeaderImagePolarOrbit.LocationDataBlockLength,
new CalibrationDataBlockGeostationary());
L2HeaderEx.Read(stream);
}
break;
}
}
}
}
private void WriteStationaryAWX(string hdr, string dat, RasterIdentify id)
{
HdrFile hdrObj = HdrFile.LoadFrom(hdr);
L1Header = new AWXLevel1HeaderImageGeostationaryOrbit();
L1Header.Write(hdrObj);
L2Header = new AWXLevel2HeaderImageGeostationary();
if (hdrObj.MapInfo.Name == "Geographic Lat/Lon")
{
L2Header.ProjectMode = 4;
}
enumDataType datatype = enumDataType.Unknow;
using (IRasterDataProvider dataprd = GeoDataDriver.Open(dat) as IRasterDataProvider)
{
if (dataprd != null && dataprd.BandCount != 0)
{
datatype = dataprd.DataType;
L2Header.GeographicalScopeNorthLatitude = (short)(dataprd.CoordEnvelope.MaxY * 100);
L2Header.GeographicalScopeSouthLatitude = (short)(dataprd.CoordEnvelope.MinY * 100);
L2Header.GeographicalScopeWestLongitude = (short)(dataprd.CoordEnvelope.MinX * 100);
L2Header.GeographicalScopeEastLongitude = (short)(dataprd.CoordEnvelope.MaxX * 100);
L2Header.ProjectCenterLatitude = (short)((L2Header.GeographicalScopeNorthLatitude + L2Header.GeographicalScopeSouthLatitude) / 2);
L2Header.ProjectCenterLongitude = (short)((L2Header.GeographicalScopeEastLongitude + L2Header.GeographicalScopeWestLongitude) / 2);
L2Header.ProjectHorizontalResolution = (short)(dataprd.ResolutionX * 100 * 100);
L2Header.ProjectVerticalResolution = (short)(dataprd.ResolutionY * 100 * 100);
}
}
L2Header.Write(hdrObj, id);
Padding = new byte[L1Header.RecordLength - L1Header.Level1HeaderLength - L1Header.Level2HeaderLength];
L1Header.WriteFile(hdr);
L2Header.WriteFile(hdr);
using (FileStream stream = new FileStream(Path.ChangeExtension(hdr, "AWX"), FileMode.Append))
{
using (BinaryWriter bw = new BinaryWriter(stream))
{
bw.Write(Padding);
}
}
using (FileStream stream = new FileStream(dat, FileMode.Open))
{
stream.Seek(hdrObj.HeaderOffset, SeekOrigin.Begin);
using (BinaryReader br = new BinaryReader(stream))
{
byte[] awxProductBytes = new Byte[L2Header.ImageHeight * L2Header.ImageWidth];
switch (datatype)
{
case enumDataType.Byte:
awxProductBytes = br.ReadBytes(Convert.ToInt32(stream.Length - stream.Position));
break;
case enumDataType.Int16:
for (int i = 0; i < awxProductBytes.Length; i++)
{
awxProductBytes[i] = BitConverter.GetBytes(br.ReadInt16())[0];
}
break;
case enumDataType.UInt16:
for (int i = 0; i < awxProductBytes.Length; i++)
{
awxProductBytes[i] = BitConverter.GetBytes(br.ReadUInt16())[0];
}
break;
case enumDataType.Int32:
for (int i = 0; i < awxProductBytes.Length; i++)
{
awxProductBytes[i] = BitConverter.GetBytes(br.ReadInt32())[0];
}
break;
case enumDataType.UInt32:
for (int i = 0; i < awxProductBytes.Length; i++)
{
awxProductBytes[i] = BitConverter.GetBytes(br.ReadUInt32())[0];
}
break;
case enumDataType.Int64:
for (int i = 0; i < awxProductBytes.Length; i++)
{
awxProductBytes[i] = BitConverter.GetBytes(br.ReadInt64())[0];
}
break;
case enumDataType.UInt64:
for (int i = 0; i < awxProductBytes.Length; i++)
{
awxProductBytes[i] = BitConverter.GetBytes(br.ReadUInt64())[0];
}
break;
default:
awxProductBytes = br.ReadBytes(Convert.ToInt32(stream.Length - stream.Position));
break;
}
Product = new AWXProduct();
Product.Read(new MemoryStream(awxProductBytes));
}
}
using (FileStream stream = new FileStream(Path.ChangeExtension(hdr, "AWX"), FileMode.Append))
{
using (BinaryWriter bw = new BinaryWriter(stream))
{
bw.Write(Product.Data);
}
}
}
