private Result FindAllCaDescriptor(DataStore section, ref Int64 bitoffset, List <CaDescriptor> descriptorList, ref Int64 descriptorLoopLength)
{
Result result = new Result();
Int64 descriptorTag = 0;
Int64 descriptorLength = 0;
Int64 caSystemId = 0;
Int64 caPid = 0;
while (descriptorLoopLength > 0)
{
result = section.ReadBits(ref bitoffset, 8, ref descriptorTag);
if (result.Fine)
{
result = section.ReadBits(ref bitoffset, 8, ref descriptorLength);
}
if (result.Fine)
{
if (descriptorTag == 0x09)
{
result = section.ReadBits(ref bitoffset, 16, ref caSystemId);
if (result.Fine)
{
result = section.SkipBits(ref bitoffset, 3);
}
if (result.Fine)
{
result = section.ReadBits(ref bitoffset, 13, ref caPid);
}
if (result.Fine)
{
result = section.SkipBits(ref bitoffset, (descriptorLength - 4) * 8);
}
if (result.Fine)
{
//Add it into the program level descriptor.
CaDescriptor caDescriptor = new CaDescriptor();
caDescriptor.CaPid = (UInt16)caPid;
caDescriptor.CaSystemId = (UInt16)caSystemId;
descriptorList.Add(caDescriptor);
}
}
else
{
//Skip the payload.
result = section.SkipBits(ref bitoffset, descriptorLength * 8);
}
}
if (result.Fine)
{
descriptorLoopLength -= (2 + descriptorLength);//Decrease by the length of the whole descriptor.
}
else
{
break;
}
}
if (result.Fine)
{
if (descriptorLoopLength != 0)
{
//We expect no data left at the end.
result.SetResult(ResultCode.INVALID_DATA);
}
}
return(result);
}
public void AddProgramLevelCaDescriptor(CaDescriptor caDescriptor)
{
programLevelCaDescriptorList.Add(caDescriptor);
}