public override long Seek(long offset, SeekOrigin origin)
{
_Validate();
IntPtr plibNewPosition = IntPtr.Zero;
try
{
plibNewPosition = Marshal.AllocHGlobal(sizeof(Int64));
_source.Seek(offset, (int)origin, plibNewPosition);
return(Marshal.ReadInt64(plibNewPosition));
}
finally
{
Utility.SafeFreeHGlobal(ref plibNewPosition);
}
}
public override long Seek(long offset, SeekOrigin origin)
{
long num;
this._Validate();
IntPtr zero = IntPtr.Zero;
try
{
zero = Marshal.AllocHGlobal(8);
this._source.Seek(offset, (int)origin, zero);
num = Marshal.ReadInt64(zero);
}
finally
{
Utility.SafeFreeHGlobal(ref zero);
}
return(num);
}
public override int Read(byte[] buffer, int offset, int count)
{
int num;
this._Validate();
IntPtr zero = IntPtr.Zero;
try
{
zero = Marshal.AllocHGlobal(4);
byte[] numArray = new byte[count];
this._source.Read(numArray, count, zero);
Array.Copy(numArray, 0, buffer, offset, Marshal.ReadInt32(zero));
num = Marshal.ReadInt32(zero);
}
finally
{
Utility.SafeFreeHGlobal(ref zero);
}
return(num);
}
public override int Read(byte[] buffer, int offset, int count)
{
_Validate();
IntPtr pcbRead = IntPtr.Zero;
try
{
pcbRead = Marshal.AllocHGlobal(sizeof(Int32));
// PERFORMANCE NOTE: This buffer doesn't need to be allocated if offset == 0
var tempBuffer = new byte[count];
_source.Read(tempBuffer, count, pcbRead);
Array.Copy(tempBuffer, 0, buffer, offset, Marshal.ReadInt32(pcbRead));
return(Marshal.ReadInt32(pcbRead));
}
finally
{
Utility.SafeFreeHGlobal(ref pcbRead);
}
}