public void AddScheduledEventItem(int serviceId, EventItem eventItem)
{
if (!ScheduledEvents.ContainsKey(serviceId))
{
ScheduledEvents[serviceId] = new List <EventItem>();
}
foreach (var item in ScheduledEvents[serviceId])
{
if (item.EventId == eventItem.EventId)
{
return;
}
}
ScheduledEvents[serviceId].Add(eventItem);
}
public override void Parse(List <byte> bytes)
{
if (bytes == null || bytes.Count < 5)
{
return;
}
var pointerFiled = bytes[0];
var pos = 1;
if (pointerFiled != 0)
{
pos = pos + pointerFiled + 1;
}
if (bytes.Count < pos + 2)
{
return;
}
ID = bytes[pos];
SectionSyntaxIndicator = ((bytes[pos + 1] & 128) == 128);
Private = ((bytes[pos + 1] & 64) == 64);
Reserved = Convert.ToByte((bytes[pos + 1] & 48) >> 4);
SectionLength = Convert.ToInt32(((bytes[pos + 1] & 15) << 8) + bytes[pos + 2]);
Data = new byte[SectionLength];
CRC = new byte[4];
//if (!DVBTTable.CRCIsValid(1,1))
//{
// return null;
//}
if (bytes.Count < SectionLength + 4)
{
throw new IndexOutOfRangeException();
}
bytes.CopyTo(0, Data, 0, SectionLength);
bytes.CopyTo(SectionLength, CRC, 0, 4);
pos = pos + 3;
ServiceId = (bytes[pos + 0] << 8) + bytes[pos + 1];
Version = Convert.ToByte((bytes[pos + 2] & 62) >> 1);
CurrentIndicator = (bytes[pos + 2] & 1) == 1;
SectionNumber = bytes[pos + 3];
LastSectionNumber = bytes[pos + 4];
pos = pos + 5;
TransportStreamID = (bytes[pos + 0] << 8) + bytes[pos + 1];
OriginalNetworkID = (bytes[pos + 2] << 8) + bytes[pos + 3];
pos = pos + 4;
SegmentLastSectionNumber = bytes[pos + 0];
LastTableID = bytes[pos + 1];
pos = pos + 2;
// pointer + table id + sect.length + descriptors - crc
var posAfterDescriptors = 4 + SectionLength - 4;
// reading descriptors
while (pos < posAfterDescriptors)
{
var eventId = (bytes[pos + 0] << 8) + bytes[pos + 1];
pos = pos + 2;
var startTime = ParseTime(bytes, pos);
pos = pos + 5;
var duration = ParseDuration(bytes, pos);
var finishTime = startTime.AddSeconds(duration);
pos = pos + 3;
var running_status = (bytes[pos + 0] & 224) >> 5;
var freeCAMode = (bytes[pos + 0] & 16) >> 4;
var descriptorLength = ((bytes[pos + 0] & 15) << 8) + bytes[pos + 1];
pos = pos + 2;
var descriptorData = new byte[descriptorLength];
bytes.CopyTo(pos, descriptorData, 0, descriptorLength);
var descriptorTag = descriptorData[0];
if (descriptorTag == 77)
{
var shortDescriptor = ShortEventDescriptor.Parse(descriptorData);
var eventItem = EventItem.Create(eventId, ServiceId, startTime, finishTime, shortDescriptor);
EventItems.Add(eventItem);
}
else
{
// TODO: read other descriptors
}
pos = pos + descriptorLength;
}
}
/// <summary>
/// Scheduled events supplemented with actual events
/// </summary>
/// <param name="date"></param>
/// <param name="count">only 1 or 2 supporting</param>
/// <returns>Key: Program MapPID</returns>
public Dictionary <int, List <EventItem> > GetEvents(DateTime date, int count = 2)
{
var res = new Dictionary <int, List <EventItem> >();
// current events:
foreach (var kvp in CurrentEvents)
{
if (kvp.Value.StartTime <= date &&
kvp.Value.FinishTime >= date &&
ProgramNumberToMapPID.ContainsKey(kvp.Key))
{
var programMapPID = ProgramNumberToMapPID[kvp.Key];
res[programMapPID] = new List <EventItem>();
res[programMapPID].Add(kvp.Value);
}
}
// scheduled events
foreach (var serviceId in ScheduledEvents.Keys)
{
if (!ProgramNumberToMapPID.ContainsKey(serviceId))
{
continue;
}
var programMapPID = ProgramNumberToMapPID[serviceId];
if (!res.ContainsKey(programMapPID))
{
res[programMapPID] = new List <EventItem>();
}
EventItem currentEvent = null;
foreach (var ev in ScheduledEvents[serviceId])
{
if (ev.StartTime <= date &&
ev.FinishTime >= date)
{
// actual running event found
if (res[programMapPID].Count == 0)
{
// cuurrent event not added
res[programMapPID].Add(ev);
currentEvent = ev;
}
else
{
currentEvent = res[programMapPID][0];
}
if (count == 1)
{
break; // second event not wanted
}
}
if (currentEvent != null &&
currentEvent.FinishTime == ev.StartTime)
{
// found second event
res[programMapPID].Add(ev);
break;
}
}
}
return(res);
}
