/// <summary>
/// Calculates the length in bytes of all the TLM markers
/// that are required to
/// </summary>
/// <param name="tileparts"></param>
/// <returns></returns>
private static int GetTotalTlmLength(int tileparts)
{
int tlmCount = BitHacks.DivCeil(tileparts, TlmMarker.MaxEntries);
if (tlmCount > TlmMarker.MaxMarkers)
{
throw new InvalidOperationException(
String.Concat(string.Format(
"too many tile-parts {0}, cannot create more ",
"than {1} TLM markers, each marker containing up to ",
"{2} entries",
tileparts, TlmMarker.MaxMarkers, TlmMarker.MaxEntries)));
}
int tilepartsRemainder =
tileparts - ((tlmCount - 1) * TlmMarker.MaxEntries);
// calculate length for all the full TLM markers
int tlmLength =
(tlmCount - 1) * TlmMarker.LengthOf(TlmMarker.MaxEntries);
// add the length of all TLM markers which are left.
tlmLength += TlmMarker.LengthOf(tilepartsRemainder);
// TlmMarker.LengthOf returns the Length of the TLM
// field as signaled in the marker segment, without
// without the 2 bytes of the marker itself.
tlmLength += tlmCount * MarkerSegment.MarkerLength;
return(tlmLength);
}
private void AddToTlm(JP2TilePart tp)
{
TlmMarker tlm = _tlmMarkers.Last();
if (tlm.IsFull)
{
if (_tlmMarkers.Count >= TlmMarker.MaxMarkers)
{
throw new InvalidOperationException(String.Concat(
"Cannot add more tile-parts, Exceeded the ",
"limit of TLM markers in codestream"));
}
_tlmMarkers.Add(new TlmMarker((byte)_tlmMarkers.Count));
tlm = _tlmMarkers.Last();
}
tlm.Add(tp);
}