/// <summary>
/// Erzeugt eine neue Beschreibung.
/// </summary>
/// <param name="section">Der SI Bereich, in dem die Information gefunden wurde.</param>
/// <param name="offset">Der Index des ersten Bytes dieser Information in den Rohdaten des SI Bereichs.</param>
/// <param name="length">Die Anzahl der Bytes für diese Information.</param>
/// <returns>Die zugehörige Information oder <i>null</i>, wenn eine Rekonstruktion nicht möglich war.</returns>
public static CellInformation Create(Section section, int offset, int length)
{
// Check minimum length
if (length < 10)
{
return(null);
}
// Correct length
length -= 10;
// Read length of extension data
int extlen = section[offset + 9];
// Validate
if (extlen > length)
{
return(null);
}
// Read direct data
ushort cellId = Tools.MergeBytesToWord(section[offset + 1], section[offset + 0]);
int latitude = Tools.MergeBytesToWord(section[offset + 3], section[offset + 2]);
int longitude = Tools.MergeBytesToWord(section[offset + 5], section[offset + 4]);
// Read to be merged data
int ext0 = section[offset + 6];
int ext1 = section[offset + 7];
int ext2 = section[offset + 8];
// Merge extends
int latitude_ext = (ext1 >> 4) + 16 * ext0;
int longitude_ext = ext2 + 256 * (ext1 & 0x0f);
// Create new
CellInformation info = new CellInformation
{
Length = 10 + extlen,
Identifier = cellId,
Latitude = Rescale(latitude, 16, 90),
Longitude = Rescale(longitude, 16, 180),
LatitudeExtension = Rescale(latitude_ext, 13, 90),
LongitudeExtension = Rescale(longitude_ext, 13, 180)
};
// Report
return(info);
}
/// <summary>
/// Erzeugt eine neue Beschreibung.
/// </summary>
/// <param name="section">Der SI Bereich, in dem die Information gefunden wurde.</param>
/// <param name="offset">Der Index des ersten Bytes dieser Information in den Rohdaten des SI Bereichs.</param>
/// <param name="length">Die Anzahl der Bytes für diese Information.</param>
/// <returns>Die zugehörige Information oder <i>null</i>, wenn eine Rekonstruktion nicht möglich war.</returns>
public static CellInformation Create( Section section, int offset, int length )
{
// Check minimum length
if (length < 10)
return null;
// Correct length
length -= 10;
// Read length of extension data
int extlen = section[offset + 9];
// Validate
if (extlen > length)
return null;
// Read direct data
ushort cellId = Tools.MergeBytesToWord( section[offset + 1], section[offset + 0] );
int latitude = Tools.MergeBytesToWord( section[offset + 3], section[offset + 2] );
int longitude = Tools.MergeBytesToWord( section[offset + 5], section[offset + 4] );
// Read to be merged data
int ext0 = section[offset + 6];
int ext1 = section[offset + 7];
int ext2 = section[offset + 8];
// Merge extends
int latitude_ext = (ext1 >> 4) + 16 * ext0;
int longitude_ext = ext2 + 256 * (ext1 & 0x0f);
// Create new
CellInformation info = new CellInformation
{
Length = 10 + extlen,
Identifier = cellId,
Latitude = Rescale(latitude, 16, 90),
Longitude = Rescale(longitude, 16, 180),
LatitudeExtension = Rescale(latitude_ext, 13, 90),
LongitudeExtension = Rescale(longitude_ext, 13, 180)
};
// Report
return info;
}
