static file_header fn_get_file_header(byte[] byte_array)
{
file_header my_struct = new file_header();
int my_struct_size = Marshal.SizeOf(my_struct);
IntPtr my_struct_ptr = Marshal.AllocHGlobal(my_struct_size);
Marshal.Copy(byte_array, 0, my_struct_ptr, my_struct_size);
my_struct = (file_header)Marshal.PtrToStructure(my_struct_ptr, my_struct.GetType());
Marshal.FreeHGlobal(my_struct_ptr);
return(my_struct);
}
private void btn_data_converter_start_Click(object sender, EventArgs e)
{
if (sender != null)
{
this.Cursor = Cursors.WaitCursor;
FileStream data_converter_file_source = null;
try
{
// Open source file
data_converter_file_source = new FileStream(g_data_converter_source, FileMode.Open, FileAccess.Read);
data_converter_file_source.Seek(0, SeekOrigin.Begin);
// Read source file header to get information
file_header data_converter_file_info = new file_header();
byte[] tmp_header_byte_array = new byte[Marshal.SizeOf(data_converter_file_info)];
data_converter_file_source.Read(tmp_header_byte_array, 0, Marshal.SizeOf(data_converter_file_info));
data_converter_file_info = fn_get_file_header(tmp_header_byte_array);
ushort ai_chnl_cnt = data_converter_file_info.ai_chnl_cnt;
double[] ai_chnl_sensitivity = new double[4] {
data_converter_file_info.ai_chnl_sensitivity0, data_converter_file_info.ai_chnl_sensitivity1, data_converter_file_info.ai_chnl_sensitivity2, data_converter_file_info.ai_chnl_sensitivity3
};
// Read source file data and then write to a text file
StreamWriter data_converter_file_destination = null;
try
{
data_converter_file_destination = new StreamWriter(g_data_converter_destination);
double[] data_array = new double[ai_chnl_cnt];
byte[] tmp_data_byte_array = new byte[ai_chnl_cnt * sizeof(double)];
do
{
int tmp_read_cnt = data_converter_file_source.Read(tmp_data_byte_array, 0, ai_chnl_cnt * sizeof(double));
if (tmp_read_cnt < ai_chnl_cnt * sizeof(double))
{
break;
}
data_array = fn_get_double_array(tmp_data_byte_array);
for (ushort vi = 0; vi < ai_chnl_cnt; ++vi)
{
if (g_data_converter_unit == 1)
{
// g
data_converter_file_destination.Write("{0:f8},", data_array[vi] * 1000 / ai_chnl_sensitivity[vi]);
}
else
{
// V
data_converter_file_destination.Write("{0:f8},", data_array[vi]);
}
}
data_converter_file_destination.Write("\n");
} while (true);
}
finally
{
if (data_converter_file_destination != null)
{
data_converter_file_destination.Close();
}
}
}
catch (FileNotFoundException)
{
this.Cursor = Cursors.Default;
MessageBox.Show("File not found", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
finally
{
if (data_converter_file_source != null)
{
data_converter_file_source.Close();
}
}
this.Cursor = Cursors.Default;
MessageBox.Show("Data conversion is complete", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}