How to Generate OV2 Files for POI records

**Pratap Gad** · 24-02-2009

Hello,

I've neve done BinaryWriting, but i need to generate TomTom and Destinator files from a POI database.

I manage to get this specification over the internet, but i'm having troubles to generate the file an OV2 file consists of POI records.

please suggest how to generate the OV2 files for POI records.

Any suggestion would be appreciated.

**Mecurtis** · 24-02-2009

Just for reference, i found this php code that seems to do the job,

$csv=file("File.csv");
$nbcsv=count($csv);
$file="POI.ov2";
$fp = fopen($file, "w");
for ($i = 0; $i < $nbcsv; $i++) {
$table = split(",",chop($csv[$i])); // Every ligne in this type:
longitude,latitude,description
$lon = $table[0];
$lat = $table[1];
$des = $table[2];
$TT = chr(0x02).pack("V",strlen($des)+14).pack("V",round
($lon*100000)).pack("V",round($lat*100000)).$des.chr(0x00);
@fwrite ($fp, "$TT");
}
fclose($fp);

**Pratap Gad** · 24-02-2009

Can anyone provide me some code for file in tomtom OV2 format.
I know that each entry must use the some sort of data but I'm not getting very far trying to use BitConverter.

Can anyone provide any assistance?

**DllD** · 24-02-2009

Here i will provide you some kind of structure for the OV2 files found over the Internet which is to the extent right.

int length = name.Length + 14;
byte[] ov2Data = new byte[length];
byte[] buffer = BitConverter.GetBytes('2');
//ov2Data[0] = buffer[0];
ov2Data[0] = 2;
buffer = BitConverter.GetBytes((long)length);
Array.Copy(buffer, 0, ov2Data, 1, 4);
buffer = BitConverter.GetBytes((long)(position.Longitude * 100000));
Array.Copy(buffer, 0, ov2Data, 5, 4);
buffer = BitConverter.GetBytes((long)(position.Latitude) * 100000);
Array.Copy(buffer, 0, ov2Data, 9, 4);
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
buffer = encoding.GetBytes(cache.Name);
Array.Copy(buffer, 0, ov2Data, 13, name.Length);
ov2File.Write(ov2Data);