[DllImport ("libgstbase-0.10.dll", CallingConvention = CallingConvention.Cdecl) ]
static extern bool gst_byte_reader_peek_data (IntPtr raw, uint size, out IntPtr val);

public bool PeekData (uint size, out byte[] val) {
  IntPtr raw_ret;

  bool ret = gst_byte_reader_peek_data (Handle, size, out raw_ret);

  if (!ret || raw_ret == IntPtr.Zero) {
    val = null;
  } else {
    val = new byte[size];
    Marshal.Copy (raw_ret, val, 0, (int) size);
  }

  return ret;
}

[DllImport ("libgstbase-0.10.dll", CallingConvention = CallingConvention.Cdecl) ]
static extern bool gst_byte_reader_get_data (IntPtr raw, uint size, out IntPtr val);

public bool GetData (uint size, out byte[] val) {
  IntPtr raw_ret;

  bool ret = gst_byte_reader_get_data (Handle, size, out raw_ret);

  if (!ret || raw_ret == IntPtr.Zero) {
    val = null;
  } else {
    val = new byte[size];
    Marshal.Copy (raw_ret, val, 0, (int) size);
  }

  return ret;
}