public static void buffStreamSimpleTest(System.String filename, int numIts, int[] in_Renamed, int[] in2)
{
System.Console.Out.WriteLine("New libraries: nom.tam.BufferedDataXXputStream");
System.Console.Out.WriteLine(" Using non-array I/O");
BufferedDataStream f = new BufferedDataStream(new FileStream(filename, FileMode.Create), 32768);
resetTime();
int dim = in_Renamed.Length;
for (int j = 0; j < numIts; j += 1)
{
for (int i = 0; i < dim; i += 1)
{
f.Write(in_Renamed[i]);
}
}
f.Flush();
f.Close();
System.Console.Out.WriteLine(" BDS Int write: " + (4 * dim * numIts) / (1000 * deltaTime()));
BufferedDataStream is_Renamed = new BufferedDataStream(new BufferedStream(new FileStream(filename, FileMode.Open, FileAccess.Read), 32768));
resetTime();
for (int j = 0; j < numIts; j += 1)
{
for (int i = 0; i < dim; i += 1)
{
in2[i] = is_Renamed.ReadInt32();
}
}
if (is_Renamed != null)
{
is_Renamed.Close();
}
System.Console.Out.WriteLine(" BDS Int read: " + (4 * dim * numIts) / (1000 * deltaTime()));
// Close the stream.
//is_Renamed.Flush();
}
public static void buffStreamSimpleTest(System.String filename, int numIts, int[] in_Renamed, int[] in2)
{
System.Console.Out.WriteLine("New libraries: nom.tam.BufferedDataXXputStream");
System.Console.Out.WriteLine(" Using non-array I/O");
BufferedDataStream f = new BufferedDataStream(new FileStream(filename, FileMode.Create), 32768);
resetTime();
int dim = in_Renamed.Length;
for (int j = 0; j < numIts; j += 1)
{
for (int i = 0; i < dim; i += 1)
{
f.Write(in_Renamed[i]);
}
}
f.Flush();
f.Close();
System.Console.Out.WriteLine(" BDS Int write: " + (4 * dim * numIts) / (1000 * deltaTime()));
BufferedDataStream is_Renamed = new BufferedDataStream(new BufferedStream(new FileStream(filename, FileMode.Open, FileAccess.Read), 32768));
resetTime();
for (int j = 0; j < numIts; j += 1)
{
for (int i = 0; i < dim; i += 1)
{
in2[i] = is_Renamed.ReadInt32();
}
}
if (is_Renamed != null)
is_Renamed.Close();
System.Console.Out.WriteLine(" BDS Int read: " + (4 * dim * numIts) / (1000 * deltaTime()));
// Close the stream.
//is_Renamed.Flush();
}
public static void bufferedStreamTest(System.String filename, int numIts, double[] db, double[] db2, float[] fl, float[] fl2, long[] ln, long[] ln2, int[] in_Renamed, int[] in2, short[] sh, short[] sh2, char[] ch, char[] ch2, byte[] by, byte[] by2, bool[] bl, bool[] bl2, int[][][][] multi, int[][][][] multi2)
{
int dim = db.Length;
double ds = SupportClass.Random.NextDouble() - 0.5;
double ds2;
float fs = (float)(SupportClass.Random.NextDouble() - 0.5);
float fs2;
int is_Renamed = (int)(1000000 * (SupportClass.Random.NextDouble() - 500000));
int is2;
long ls = (long)(100000000000L * (SupportClass.Random.NextDouble() - 50000000000L));
long ls2;
short ss = (short)(60000 * (SupportClass.Random.NextDouble() - 30000));
short ss2;
char cs = (char)(60000 * SupportClass.Random.NextDouble());
char cs2;
byte bs = (byte)(256 * SupportClass.Random.NextDouble() - 128);
byte bs2;
bool bls = (SupportClass.Random.NextDouble() > 0.5);
bool bls2;
System.Console.Out.WriteLine("New libraries: nom.tam.util.BufferedDataXXputStream");
System.Console.Out.WriteLine(" Using array I/O methods");
{
BufferedDataStream f = new BufferedDataStream(new FileStream(filename, FileMode.Create));
resetTime();
for (int i = 0; i < numIts; i += 1)
f.WriteArray(db);
System.Console.Out.WriteLine(" BDS Dbl write: " + (8 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.WriteArray(fl);
System.Console.Out.WriteLine(" BDS Flt write: " + (4 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.WriteArray(in_Renamed);
System.Console.Out.WriteLine(" BDS Int write: " + (4 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.WriteArray(ln);
System.Console.Out.WriteLine(" BDS Lng write: " + (8 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.WriteArray(sh);
System.Console.Out.WriteLine(" BDS Sht write: " + (2 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.WriteArray(ch);
System.Console.Out.WriteLine(" BDS Chr write: " + (2 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.WriteArray((byte[])by);
System.Console.Out.WriteLine(" BDS Byt write: " + (1 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.WriteArray(bl);
System.Console.Out.WriteLine(" BDS Boo write: " + (1 * dim * numIts) / (1000 * deltaTime()));
f.Write((byte)bs);
f.Write((System.Char)cs);
f.Write((System.Int16)ss);
f.Write(is_Renamed);
f.Write(ls);
f.Write(fs);
f.Write(ds);
f.Write(bls);
f.WriteArray(multi);
f.Flush();
f.Close();
}
{
BufferedDataStream f = new BufferedDataStream(new FileStream(filename, FileMode.Open, FileAccess.Read));
resetTime();
for (int i = 0; i < numIts; i += 1)
f.ReadArray(db2);
System.Console.Out.WriteLine(" BDS Dbl read: " + (8 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.ReadArray(fl2);
System.Console.Out.WriteLine(" BDS Flt read: " + (4 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.ReadArray(in2);
System.Console.Out.WriteLine(" BDS Int read: " + (4 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.ReadArray(ln2);
System.Console.Out.WriteLine(" BDS Lng read: " + (8 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.ReadArray(sh2);
System.Console.Out.WriteLine(" BDS Sht read: " + (2 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.ReadArray(ch2);
System.Console.Out.WriteLine(" BDS Chr read: " + (2 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.ReadArray((byte[])by2);
System.Console.Out.WriteLine(" BDS Byt read: " + (1 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
f.ReadArray(bl2);
System.Console.Out.WriteLine(" BDS Boo read: " + (1 * dim * numIts) / (1000 * deltaTime()));
bs2 = (byte)f.ReadByte();
cs2 = f.ReadChar();
ss2 = f.ReadInt16();
is2 = f.ReadInt32();
ls2 = f.ReadInt64();
fs2 = f.ReadSingle();
ds2 = f.ReadDouble();
bls2 = f.ReadBoolean();
for (int i = 0; i < 10; i += 1)
{
multi2[i][i][i][i] = 0;
}
// Now read only pieces of the multidimensional array.
for (int i = 0; i < 5; i += 1)
{
System.Console.Out.WriteLine("Multiread:" + i);
// Skip the odd initial indices and
// read the evens.
//BinaryReader temp_BinaryReader;
System.Int64 temp_Int64;
//temp_BinaryReader = f;
temp_Int64 = f.Position; //temp_BinaryReader.BaseStream.Position;
temp_Int64 = f.Seek(4000) - temp_Int64; //temp_BinaryReader.BaseStream.Seek(4000, SeekOrigin.Current) - temp_Int64;
int generatedAux28 = (int)temp_Int64;
f.ReadArray(multi2[2 * i + 1]);
}
// f.Close();
}
System.Console.Out.WriteLine("Stream Verification:");
System.Console.Out.WriteLine(" An error should be reported for double and float NaN's");
System.Console.Out.WriteLine(" Arrays:");
for (int i = 0; i < dim; i += 1)
{
if (db[i] != db2[i] && !Double.IsNaN(db[i]) && !Double.IsNaN(db2[i]))
{
System.Console.Out.WriteLine(" Double error at " + i + " " + db[i] + " " + db2[i]);
}
if (fl[i] != fl2[i] && !Single.IsNaN(fl[i]) && !Single.IsNaN(fl2[i]))
{
System.Console.Out.WriteLine(" Float error at " + i + " " + fl[i] + " " + fl2[i]);
}
if (in_Renamed[i] != in2[i])
{
System.Console.Out.WriteLine(" Int error at " + i + " " + in_Renamed[i] + " " + in2[i]);
}
if (ln[i] != ln2[i])
{
System.Console.Out.WriteLine(" Long error at " + i + " " + ln[i] + " " + ln2[i]);
}
if (sh[i] != sh2[i])
{
System.Console.Out.WriteLine(" Short error at " + i + " " + sh[i] + " " + sh2[i]);
}
if (ch[i] != ch2[i])
{
System.Console.Out.WriteLine(" Char error at " + i + " " + (int)ch[i] + " " + (int)ch2[i]);
}
if (by[i] != by2[i])
{
System.Console.Out.WriteLine(" Byte error at " + i + " " + by[i] + " " + by2[i]);
}
if (bl[i] != bl2[i])
{
System.Console.Out.WriteLine(" Bool error at " + i + " " + bl[i] + " " + bl2[i]);
}
}
System.Console.Out.WriteLine(" Scalars:");
// Check the scalars.
if (bls != bls2)
{
System.Console.Out.WriteLine(" Bool Scalar mismatch:" + bls + " " + bls2);
}
if (bs != bs2)
{
System.Console.Out.WriteLine(" Byte Scalar mismatch:" + bs + " " + bs2);
}
if (cs != cs2)
{
System.Console.Out.WriteLine(" Char Scalar mismatch:" + (int)cs + " " + (int)cs2);
}
if (ss != ss2)
{
System.Console.Out.WriteLine(" Short Scalar mismatch:" + ss + " " + ss2);
}
if (is_Renamed != is2)
{
System.Console.Out.WriteLine(" Int Scalar mismatch:" + is_Renamed + " " + is2);
}
if (ls != ls2)
{
System.Console.Out.WriteLine(" Long Scalar mismatch:" + ls + " " + ls2);
}
if (fs != fs2)
{
System.Console.Out.WriteLine(" Float Scalar mismatch:" + fs + " " + fs2);
}
if (ds != ds2)
{
System.Console.Out.WriteLine(" Double Scalar mismatch:" + ds + " " + ds2);
}
System.Console.Out.WriteLine(" Multi: odd rows should match");
for (int i = 0; i < 10; i += 1)
{
System.Console.Out.WriteLine(" " + i + " " + multi[i][i][i][i] + " " + multi2[i][i][i][i]);
}
System.Console.Out.WriteLine("Done BufferedStream Tests");
}
/// <summary>Write a Fits Object to an external Stream. The stream is left open.</summary>
/// <param name="dos">A DataOutput stream</param>
public virtual void Write(Stream os)
{
ArrayDataIO obs;
bool newOS = false;
if(os is ArrayDataIO)
{
obs = (ArrayDataIO) os;
}
else
{
newOS = true;
obs = new BufferedDataStream(os);
}
BasicHDU hh;
for(int i = 0; i < NumberOfHDUs; i += 1)
{
try
{
hh = (BasicHDU)hduList[i];
hh.Write(obs);
}
catch(IndexOutOfRangeException e)
{
SupportClass.WriteStackTrace(e, Console.Error);
throw new FitsException("Internal Error: Vector Inconsistency" + e);
}
}
if(newOS)
{
try
{
obs.Flush();
obs.Close();
}
catch(IOException)
{
Console.Error.WriteLine("Warning: error closing FITS output stream");
}
}
// change suggested in .99 version
try
{
if (obs is BufferedFile)
{
((BufferedFile)obs).SetLength( ((BufferedFile)obs).FilePointer);
}
}
catch (IOException e)
{
System.Console.Out.WriteLine("Exception occured while Writing BufferedFile: \n\t" + e.Message);
// Ignore problems...
}
}
public void WriteFrameImpl(IntPtr intPtr, int p, RawFrameInfo info)
{
object data = MarshalToCLR(intPtr, p);
Fits fits = new Fits();
BasicHDU hdu = FitsFactory.HDUFactory(data);
if ((data is short[][] || data is short[][][]) && _significantBitDepth > 8)
{
hdu.AddValue("BZERO", 32768.0, "");
}
AddMetadataToFrame(info, hdu);
fits.AddHDU(hdu);
using (FileStream fs = File.Create(Path.GetTempFileName()))
{
using (BufferedDataStream f = new BufferedDataStream(fs))
{
fits.Write(f);
}
}
}
public static void bufferedStreamTest(System.String filename, int numIts, double[] db, double[] db2, float[] fl, float[] fl2, long[] ln, long[] ln2, int[] in_Renamed, int[] in2, short[] sh, short[] sh2, char[] ch, char[] ch2, byte[] by, byte[] by2, bool[] bl, bool[] bl2, int[][][][] multi, int[][][][] multi2)
{
int dim = db.Length;
double ds = SupportClass.Random.NextDouble() - 0.5;
double ds2;
float fs = (float)(SupportClass.Random.NextDouble() - 0.5);
float fs2;
int is_Renamed = (int)(1000000 * (SupportClass.Random.NextDouble() - 500000));
int is2;
long ls = (long)(100000000000L * (SupportClass.Random.NextDouble() - 50000000000L));
long ls2;
short ss = (short)(60000 * (SupportClass.Random.NextDouble() - 30000));
short ss2;
char cs = (char)(60000 * SupportClass.Random.NextDouble());
char cs2;
byte bs = (byte)(256 * SupportClass.Random.NextDouble() - 128);
byte bs2;
bool bls = (SupportClass.Random.NextDouble() > 0.5);
bool bls2;
System.Console.Out.WriteLine("New libraries: nom.tam.util.BufferedDataXXputStream");
System.Console.Out.WriteLine(" Using array I/O methods");
{
BufferedDataStream f = new BufferedDataStream(new FileStream(filename, FileMode.Create));
resetTime();
for (int i = 0; i < numIts; i += 1)
{
f.WriteArray(db);
}
System.Console.Out.WriteLine(" BDS Dbl write: " + (8 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.WriteArray(fl);
}
System.Console.Out.WriteLine(" BDS Flt write: " + (4 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.WriteArray(in_Renamed);
}
System.Console.Out.WriteLine(" BDS Int write: " + (4 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.WriteArray(ln);
}
System.Console.Out.WriteLine(" BDS Lng write: " + (8 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.WriteArray(sh);
}
System.Console.Out.WriteLine(" BDS Sht write: " + (2 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.WriteArray(ch);
}
System.Console.Out.WriteLine(" BDS Chr write: " + (2 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.WriteArray((byte[])by);
}
System.Console.Out.WriteLine(" BDS Byt write: " + (1 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.WriteArray(bl);
}
System.Console.Out.WriteLine(" BDS Boo write: " + (1 * dim * numIts) / (1000 * deltaTime()));
f.Write((byte)bs);
f.Write((System.Char)cs);
f.Write((System.Int16)ss);
f.Write(is_Renamed);
f.Write(ls);
f.Write(fs);
f.Write(ds);
f.Write(bls);
f.WriteArray(multi);
f.Flush();
f.Close();
}
{
BufferedDataStream f = new BufferedDataStream(new FileStream(filename, FileMode.Open, FileAccess.Read));
resetTime();
for (int i = 0; i < numIts; i += 1)
{
f.ReadArray(db2);
}
System.Console.Out.WriteLine(" BDS Dbl read: " + (8 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.ReadArray(fl2);
}
System.Console.Out.WriteLine(" BDS Flt read: " + (4 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.ReadArray(in2);
}
System.Console.Out.WriteLine(" BDS Int read: " + (4 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.ReadArray(ln2);
}
System.Console.Out.WriteLine(" BDS Lng read: " + (8 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.ReadArray(sh2);
}
System.Console.Out.WriteLine(" BDS Sht read: " + (2 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.ReadArray(ch2);
}
System.Console.Out.WriteLine(" BDS Chr read: " + (2 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.ReadArray((byte[])by2);
}
System.Console.Out.WriteLine(" BDS Byt read: " + (1 * dim * numIts) / (1000 * deltaTime()));
for (int i = 0; i < numIts; i += 1)
{
f.ReadArray(bl2);
}
System.Console.Out.WriteLine(" BDS Boo read: " + (1 * dim * numIts) / (1000 * deltaTime()));
bs2 = (byte)f.ReadByte();
cs2 = f.ReadChar();
ss2 = f.ReadInt16();
is2 = f.ReadInt32();
ls2 = f.ReadInt64();
fs2 = f.ReadSingle();
ds2 = f.ReadDouble();
bls2 = f.ReadBoolean();
for (int i = 0; i < 10; i += 1)
{
multi2[i][i][i][i] = 0;
}
// Now read only pieces of the multidimensional array.
for (int i = 0; i < 5; i += 1)
{
System.Console.Out.WriteLine("Multiread:" + i);
// Skip the odd initial indices and
// read the evens.
//BinaryReader temp_BinaryReader;
System.Int64 temp_Int64;
//temp_BinaryReader = f;
temp_Int64 = f.Position; //temp_BinaryReader.BaseStream.Position;
temp_Int64 = f.Seek(4000) - temp_Int64; //temp_BinaryReader.BaseStream.Seek(4000, SeekOrigin.Current) - temp_Int64;
int generatedAux28 = (int)temp_Int64;
f.ReadArray(multi2[2 * i + 1]);
}
// f.Close();
}
System.Console.Out.WriteLine("Stream Verification:");
System.Console.Out.WriteLine(" An error should be reported for double and float NaN's");
System.Console.Out.WriteLine(" Arrays:");
for (int i = 0; i < dim; i += 1)
{
if (db[i] != db2[i] && !Double.IsNaN(db[i]) && !Double.IsNaN(db2[i]))
{
System.Console.Out.WriteLine(" Double error at " + i + " " + db[i] + " " + db2[i]);
}
if (fl[i] != fl2[i] && !Single.IsNaN(fl[i]) && !Single.IsNaN(fl2[i]))
{
System.Console.Out.WriteLine(" Float error at " + i + " " + fl[i] + " " + fl2[i]);
}
if (in_Renamed[i] != in2[i])
{
System.Console.Out.WriteLine(" Int error at " + i + " " + in_Renamed[i] + " " + in2[i]);
}
if (ln[i] != ln2[i])
{
System.Console.Out.WriteLine(" Long error at " + i + " " + ln[i] + " " + ln2[i]);
}
if (sh[i] != sh2[i])
{
System.Console.Out.WriteLine(" Short error at " + i + " " + sh[i] + " " + sh2[i]);
}
if (ch[i] != ch2[i])
{
System.Console.Out.WriteLine(" Char error at " + i + " " + (int)ch[i] + " " + (int)ch2[i]);
}
if (by[i] != by2[i])
{
System.Console.Out.WriteLine(" Byte error at " + i + " " + by[i] + " " + by2[i]);
}
if (bl[i] != bl2[i])
{
System.Console.Out.WriteLine(" Bool error at " + i + " " + bl[i] + " " + bl2[i]);
}
}
System.Console.Out.WriteLine(" Scalars:");
// Check the scalars.
if (bls != bls2)
{
System.Console.Out.WriteLine(" Bool Scalar mismatch:" + bls + " " + bls2);
}
if (bs != bs2)
{
System.Console.Out.WriteLine(" Byte Scalar mismatch:" + bs + " " + bs2);
}
if (cs != cs2)
{
System.Console.Out.WriteLine(" Char Scalar mismatch:" + (int)cs + " " + (int)cs2);
}
if (ss != ss2)
{
System.Console.Out.WriteLine(" Short Scalar mismatch:" + ss + " " + ss2);
}
if (is_Renamed != is2)
{
System.Console.Out.WriteLine(" Int Scalar mismatch:" + is_Renamed + " " + is2);
}
if (ls != ls2)
{
System.Console.Out.WriteLine(" Long Scalar mismatch:" + ls + " " + ls2);
}
if (fs != fs2)
{
System.Console.Out.WriteLine(" Float Scalar mismatch:" + fs + " " + fs2);
}
if (ds != ds2)
{
System.Console.Out.WriteLine(" Double Scalar mismatch:" + ds + " " + ds2);
}
System.Console.Out.WriteLine(" Multi: odd rows should match");
for (int i = 0; i < 10; i += 1)
{
System.Console.Out.WriteLine(" " + i + " " + multi[i][i][i][i] + " " + multi2[i][i][i][i]);
}
System.Console.Out.WriteLine("Done BufferedStream Tests");
}
/// <summary>Add some data to the heap.</summary>
internal virtual int PutData(Object data)
{
int size = ArrayFuncs.ComputeSize(data);
ExpandHeap(size);
MemoryStream bo = new MemoryStream(size);
try
{
BufferedDataStream o = new BufferedDataStream(bo);
o.WriteArray(data);
o.Flush();
o.Close();
}
catch(IOException)
{
throw new FitsException("Unable to write variable column length data");
}
Array.Copy(bo.ToArray(), 0, heap, heapSize, size);
int oldOffset = heapSize;
heapSize += size;
// change suggested in .99.1 version:
heapOffset = heapSize;
return oldOffset;
}
/// <summary>Check if the Heap can accommodate a given requirement. If not expand the heap.</summary>
internal virtual void ExpandHeap(int need)
{
// change suggested in .99.1 version:
// Invalidate any existing input stream to the heap.
bstr = null;
if (heapSize + need > heap.Length)
{
// change suggested in .99.1 version:
expanded = true;
int newlen = (heapSize + need) * 2;
if (newlen < 16384)
{
newlen = 16384;
}
byte[] newHeap = new byte[newlen];
Array.Copy(heap, 0, newHeap, 0, heapSize);
heap = newHeap;
}
}
/// <summary>Read the heap</summary>
public virtual void Read(ArrayDataIO str)
{
if (str is RandomAccess)
{
fileOffset = FitsUtil.FindOffset(str);
input = str;
}
if (heap != null)
{
try
{
str.Read(heap, 0, heapSize);
}
catch(IOException e)
{
throw new FitsException("Error reading heap:" + e);
}
}
// change suggested in .99.1 version:
bstr = null;
}
/// <summary>Get data from the heap.</summary>
/// <param name="offset">The offset at which the data begins.</param>
/// <param name="array"> The array to be extracted.</param>
public virtual void GetData(int offset, Object array)
{
// Can we reuse the existing byte stream?
try
{
if (bstr == null || heapOffset > offset)
{
heapOffset = 0;
bstr = new BufferedDataStream(new MemoryStream(heap));
}
//System.IO.BinaryReader temp_BinaryReader;
System.Int64 temp_Int64;
//temp_BinaryReader = bstr;
temp_Int64 = bstr.Position; //temp_BinaryReader.BaseStream.Position;
temp_Int64 = bstr.Seek(offset - heapOffset) - temp_Int64; //temp_BinaryReader.BaseStream.Seek(offset - heapOffset, System.IO.SeekOrigin.Current) - temp_Int64;
int generatedAux = (int)temp_Int64;
heapOffset = offset;
heapOffset += bstr.ReadArray(array);
}
catch(IOException e)
{
throw new FitsException("Error decoding heap area at offset=" + offset + ". Exception: Exception " + e);
}
}