/// <summary>
/// Returns the byte size of a POI if it was serialised
/// </summary>
/// <param name="poi">The POI</param>
/// <returns>The byte size of the POI if serialised</returns>
private Int32 GetPOISize(POI poi) {
Int32 iReturn = 0;
if(String.IsNullOrEmpty(poi.ExtendedData)) {
iReturn += SimplePOIStructSize + poi.Name.Length;
}
else {
iReturn += ExendedPOIStructSize + poi.Name.Length + poi.ExtendedData.Length;
}
if(!String.IsNullOrEmpty(poi.Telephone)) {
iReturn += poi.Telephone.Length + 1;
}
return iReturn;
}
/// <summary>
/// Serailises a TomTom simple POI into a byte stream
/// </summary>
/// <param name="Rec">The TomTom POI record to serialise</param>
/// <returns>The serialised byte stream</returns>
private byte[] SerialiseSimplePOI(POI Rec) {
int Pos = 0;
int Size = SimplePOIStructSize + Rec.Name.Length;
if(!String.IsNullOrEmpty(Rec.Telephone)) {
Size += Rec.Telephone.Length + 1;
}
byte[] bReturn = new byte[Size];
bReturn[Pos] = 0x02;
Pos++;
ConvertToLEBytes(Size).CopyTo(bReturn, Pos);
Pos += 4;
ConvertToLEBytes((Int32)(Rec.Long * 100000)).CopyTo(bReturn, Pos);
Pos += 4;
ConvertToLEBytes((Int32)(Rec.Lat * 100000)).CopyTo(bReturn, Pos);
Pos += 4;
Encoding.ASCII.GetBytes(Rec.Name).CopyTo(bReturn, Pos);
Pos += Rec.Name.Length;
if(!String.IsNullOrEmpty(Rec.Telephone)) {
bReturn[Pos] = 0x3E;
Pos += 1;
Encoding.ASCII.GetBytes(Rec.Telephone).CopyTo(bReturn, Pos);
Pos += Rec.Telephone.Length;
}
bReturn[Pos] = 0x00;
return bReturn;
}
private POI ConvertToPOI(byte[] POIData) {
POI ReturnPOI = new POI();
int Pos = 0;
byte[] BinInt32 = new byte[4];
byte ReadByte = 0x01;
//Get longitude
BinInt32[Pos] = POIData[Pos + 5];
BinInt32[Pos + 1] = POIData[Pos + 6];
BinInt32[Pos + 2] = POIData[Pos + 7];
BinInt32[Pos + 3] = POIData[Pos + 8];
ReturnPOI.Long = (double)BitConverter.ToInt32(BinInt32, 0) / (double)100000;
//Get latitude
BinInt32[Pos] = POIData[Pos + 9];
BinInt32[Pos + 1] = POIData[Pos + 10];
BinInt32[Pos + 2] = POIData[Pos + 11];
BinInt32[Pos + 3] = POIData[Pos + 12];
ReturnPOI.Lat = (double)BitConverter.ToInt32(BinInt32, 0) / (double)100000;
//Get Name
Pos = Pos + 13;
ReadByte = POIData[Pos];
while(ReadByte != 0x00) {
ReturnPOI.Name += (char)ReadByte;
Pos++;
ReadByte = POIData[Pos];
}
//DOes the name contain a phone number?
if(ReturnPOI.Name.Contains('>')) {
int GTPos = ReturnPOI.Name.LastIndexOf('>');
ReturnPOI.Telephone = ReturnPOI.Name.Substring(GTPos + 1);
ReturnPOI.Name = ReturnPOI.Name.Substring(0, GTPos);
}
//If this is an extended POI, then read the extended data
if(POIData[0] == (byte)POIRecordTypes.ExtendedPOI) {
Pos++;
ReadByte = POIData[Pos];
while (ReadByte != 0x00) {
ReturnPOI.ExtendedData += (char)ReadByte;
Pos++;
ReadByte = POIData[Pos];
}
}
return ReturnPOI;
}
