/// <summary>
/// Reads the requested data from the stream and writes it to the given address.
/// </summary>
static unsafe uint streamRead(IntPtr buffer, uint size, uint count, fi_handle handle)
{
Stream stream = handle.GetObject() as Stream;
if ((stream == null) || (!stream.CanRead))
{
return(0);
}
uint readCount = 0;
byte *ptr = (byte *)buffer;
byte[] bufferTemp = new byte[size];
int read;
while (readCount < count)
{
read = stream.Read(bufferTemp, 0, (int)size);
if (read != (int)size)
{
stream.Seek(-read, SeekOrigin.Current);
break;
}
for (int i = 0; i < read; i++, ptr++)
{
*ptr = bufferTemp[i];
}
readCount++;
}
return((uint)readCount);
}
/// <summary>
/// Reads the given data and writes it into the stream.
/// </summary>
static unsafe uint streamWrite(IntPtr buffer, uint size, uint count, fi_handle handle)
{
Stream stream = handle.GetObject() as Stream;
if ((stream == null) || (!stream.CanWrite))
{
return(0);
}
uint writeCount = 0;
byte[] bufferTemp = new byte[size];
byte * ptr = (byte *)buffer;
while (writeCount < count)
{
for (int i = 0; i < size; i++, ptr++)
{
bufferTemp[i] = *ptr;
}
try
{
stream.Write(bufferTemp, 0, bufferTemp.Length);
}
catch
{
return(writeCount);
}
writeCount++;
}
return(writeCount);
}
/// <summary>
/// Returns the streams current position
/// </summary>
static int streamTell(fi_handle handle)
{
Stream stream = handle.GetObject() as Stream;
if (stream == null)
{
return(-1);
}
return((int)stream.Position);
}
/// <summary>
/// Moves the streams position.
/// </summary>
static int streamSeek(fi_handle handle, int offset, SeekOrigin origin)
{
Stream stream = handle.GetObject() as Stream;
if (stream == null)
{
return(1);
}
stream.Seek((long)offset, origin);
return(0);
}