static LutEvaluator7()
{
string fileName = LutPath;
Exception exception = null;
try
{
using (FileStream file = File.Open(fileName, FileMode.Open, FileAccess.Read, FileShare.Read))
{
using (BinaryReader r = new BinaryReader(file))
{
BdsVersion version = new BdsVersion();
version.Read(r);
UInt32 formatId = r.ReadUInt32();
UInt32 lutSize = r.ReadUInt32();
UInt32 lutByteSize = lutSize * 4;
_lutPtr = UnmanagedMemory.AllocHGlobalExSmartPtr(lutByteSize);
pLut = (UInt32 *)_lutPtr;
UnmanagedMemory.Read(r, _lutPtr, lutByteSize);
}
}
}
catch (Exception e)
{
exception = e;
}
if (exception != null)
{
if (_lutPtr != null)
{
_lutPtr.Dispose();
_lutPtr = null;
}
pLut = (UInt32 *)IntPtr.Zero.ToPointer();
// If IO error occured leave the class uninitialized. This is a normal case for table generation.
// If the application tries to use an uninitialized class, an exception will be thrown somewhere.
// Otherwise rethrow the exception.
if (!(exception is IOException))
{
throw exception;
}
}
}
void DoTestReadWrite(IntPtr p, Int64 size)
{
MemoryStream ms = new MemoryStream();
BinaryWriter w = new BinaryWriter(ms);
UnmanagedMemory.Write(w, p, size);
byte[] buffer = ms.ToArray();
ms = new MemoryStream(buffer);
using (SmartPtr p1 = UnmanagedMemory.AllocHGlobalExSmartPtr(size))
{
BinaryReader r = new BinaryReader(ms);
UnmanagedMemory.Read(r, p1.Ptr, size);
byte *pBytes = (byte *)p;
byte *pBytes1 = (byte *)p1;
for (Int64 i = 0; i < size; ++i)
{
Assert.AreEqual(pBytes[i], pBytes1[i], String.Format("Values differ at pos {0}, size {1}", i, size));
}
p1.Dispose();
}
}