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[DllImport("libgsf-1.dll")]
static extern IntPtr gsf_input_read(IntPtr raw, int num_bytes, IntPtr optional_buffer);
public byte[] Read(int num_bytes) {
IntPtr raw_ret = gsf_input_read(Handle, num_bytes, IntPtr.Zero);
if (raw_ret == IntPtr.Zero) {
return null;
}
byte[] ret = new byte[num_bytes];
System.Runtime.InteropServices.Marshal.Copy (raw_ret, ret, 0, num_bytes);
return ret;
}
[DllImport("libgsf-1.dll")]
static extern bool gsf_input_seek(IntPtr raw, long offset, int whence);
public bool Seek(long offset, System.IO.SeekOrigin origin) {
int whence;
switch (origin) {
case System.IO.SeekOrigin.Begin:
whence = 1;
break;
case System.IO.SeekOrigin.Current:
whence = 0;
break;
case System.IO.SeekOrigin.End:
whence = 2;
break;
default:
return true;
}
bool raw_ret = gsf_input_seek(Handle, offset, whence);
bool ret = !raw_ret; /* Reverse this so that it's the same as Output. */
return ret;
}
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