public async Task <SearchMapPIDsResult> SearchProgramMapPIDs(bool tunePID0and17 = true)
{
_log.Debug($"Searching Program Map PIDs");
var res = new SearchMapPIDsResult();
try
{
if (tunePID0and17)
{
// setting PID filter
var pids = new List <long>()
{
0, 16, 17
};
var pidRes = await SetPIDs(pids);
if (!pidRes.SuccessFlag)
{
res.Result = SearchProgramResultEnum.Error;
return(res);
}
}
StartReadBuffer();
var timeoutForReadingBuffer = 15; // 15 secs
var startTime = DateTime.Now;
SDTTable sdtTable = null;
PSITable psiTable = null;
Dictionary <ServiceDescriptor, long> serviceDescriptors = null;
while ((DateTime.Now - startTime).TotalSeconds < timeoutForReadingBuffer)
{
// searching for PID 0 (PSI) and 17 (SDT) packets ..
var packets = MPEGTransportStreamPacket.Parse(Buffer);
sdtTable = DVBTTable.CreateFromPackets <SDTTable>(packets, 17);
psiTable = DVBTTable.CreateFromPackets <PSITable>(packets, 0);
if (sdtTable != null && psiTable != null)
{
// does SDT table belongs to this frequency?
serviceDescriptors = MPEGTransportStreamPacket.GetAvailableServicesMapPIDs(sdtTable, psiTable);
if (serviceDescriptors.Count > 0)
{
break;
}
else
{
_log.Debug($"Wrong SDTTable in buffer!");
ClearReadBuffer();
}
}
await Task.Delay(500);
}
StopReadBuffer();
// debug save buffer
//SaveBuffer($"Buffer.{_lastTunedFreq}", Buffer.ToArray());
if (sdtTable == null || psiTable == null)
{
_log.Debug($"No SDT or PSI table found");
res.Result = SearchProgramResultEnum.Error;
return(res);
}
res.ServiceDescriptors = serviceDescriptors;
res.Result = SearchProgramResultEnum.OK;
_log.Debug($"SDT descriptors:");
foreach (var sdt in sdtTable.ServiceDescriptors)
{
_log.Debug($"Name: {sdt.ProviderName}, provider: {sdt.ProviderName}, number: {sdt.ProgramNumber}");
}
_log.Debug($"PSI association:");
foreach (var pr in psiTable.ProgramAssociations)
{
_log.Debug($"MapPID: {pr.ProgramMapPID}, number: {pr.ProgramNumber}");
}
_log.Debug($"Searching Program Map PIDS response: {res.Result}");
return(res);
} catch (Exception ex)
{
_log.Error(ex);
res.Result = SearchProgramResultEnum.Error;
return(res);
}
}
public static void AnalyzeMPEGTSPackets(string path, bool includeEIT = true)
{
var logger = new FileLoggingService(LoggingLevelEnum.Debug);
logger.LogFilename = "Log.log";
Console.Write($"Reading ....... ");
var bytes = LoadBytesFromFile(path);
var packets = MPEGTransportStreamPacket.Parse(bytes);
Console.WriteLine($" {packets.Count} packets found");
var packetsByPID = new SortedDictionary <long, List <MPEGTransportStreamPacket> >();
foreach (var packet in packets)
{
if (!packetsByPID.ContainsKey(packet.PID))
{
packetsByPID.Add(packet.PID, new List <MPEGTransportStreamPacket>());
}
packetsByPID[packet.PID].Add(packet);
}
Console.WriteLine();
Console.WriteLine($"PID: Packets count");
Console.WriteLine("-------------------------------");
SDTTable sDTTable = null;
PSITable psiTable = null;
foreach (var kvp in packetsByPID)
{
Console.WriteLine($"{kvp.Key,6} ({"0x" + Convert.ToString(kvp.Key, 16),6}): {kvp.Value.Count,8}");
}
if (packetsByPID.ContainsKey(17))
{
Console.WriteLine();
Console.WriteLine($"Service Description Table(SDT):");
Console.WriteLine($"------------------------------");
sDTTable = DVBTTable.CreateFromPackets <SDTTable>(packetsByPID[17], 17); // PID 0x11, Service Description Table (SDT)
if (sDTTable != null)
{
sDTTable.WriteToConsole();
}
}
if (packetsByPID.ContainsKey(16))
{
Console.WriteLine();
Console.WriteLine($"Network Information Table (NIT):");
Console.WriteLine($"--------------------------------");
var niTable = DVBTTable.CreateFromPackets <NITTable>(packetsByPID[16], 16);
if (niTable != null)
{
niTable.WriteToConsole();
}
}
if (packetsByPID.ContainsKey(0))
{
Console.WriteLine();
Console.WriteLine($"Program Specific Information(PSI):");
Console.WriteLine($"----------------------------------");
psiTable = DVBTTable.CreateFromPackets <PSITable>(packetsByPID[0], 0);
if (psiTable != null)
{
psiTable.WriteToConsole();
}
}
if ((psiTable != null) &&
(sDTTable != null))
{
Console.WriteLine();
Console.WriteLine($"Program Map Table (PMT):");
Console.WriteLine($"----------------------------------");
Console.WriteLine();
var servicesMapPIDs = MPEGTransportStreamPacket.GetAvailableServicesMapPIDs(sDTTable, psiTable);
Console.WriteLine($"{"Program name".PadRight(40,' '),40} {"Program number",14} {" PID",8}");
Console.WriteLine($"{"------------".PadRight(40,' '),40} {"--------------",14} {"--------"}");
// scan PMT for each program number
foreach (var kvp in servicesMapPIDs)
{
Console.WriteLine($"{kvp.Key.ServiceName.PadRight(40, ' ')} {kvp.Key.ProgramNumber,14} {kvp.Value,8}");
if (packetsByPID.ContainsKey(Convert.ToInt32(kvp.Value)))
{
// stream contains this Map PID
if (packetsByPID.ContainsKey(kvp.Value))
{
var mptPacket = DVBTTable.CreateFromPackets <PMTTable>(packetsByPID[kvp.Value], kvp.Value);
mptPacket.WriteToConsole();
}
}
}
}
if (includeEIT)
{
if (packetsByPID.ContainsKey(18))
{
Console.WriteLine();
Console.WriteLine($"Event Information Table (EIT):");
Console.WriteLine($"------------------------------");
var eitManager = new EITManager(logger);
var packetsEITwithSDT = new List <MPEGTransportStreamPacket>();
packetsEITwithSDT.AddRange(packetsByPID[18]);
if (packetsByPID.ContainsKey(0))
{
packetsEITwithSDT.AddRange(packetsByPID[0]);
}
var eitScanRes = eitManager.Scan(packetsEITwithSDT);
if (eitScanRes.UnsupportedEncoding)
{
Console.WriteLine();
Console.WriteLine("Unsupported encoding");
Console.WriteLine();
}
else
{
Console.WriteLine();
Console.WriteLine("Current events");
Console.WriteLine();
Console.WriteLine($"{"Program number",14} {"Date".PadRight(10, ' '),10} {"From "}-{" To "} Text");
Console.WriteLine($"{"--------------",14} {"----".PadRight(10, '-'),10} {"-----"}-{"-----"} -------------------------------");
foreach (var kvp in eitManager.CurrentEvents)
{
Console.WriteLine(kvp.Value.WriteToString());
}
Console.WriteLine();
Console.WriteLine("Scheduled events");
Console.WriteLine();
foreach (var programNumber in eitManager.ScheduledEvents.Keys)
{
foreach (var ev in eitManager.ScheduledEvents[programNumber])
{
Console.WriteLine(ev.WriteToString());
}
}
Console.WriteLine();
Console.WriteLine("Present Events");
Console.WriteLine();
foreach (var kvp in eitManager.GetEvents(DateTime.Now))
{
Console.WriteLine($"Program Map PID: {kvp.Key}");
foreach (var ev in kvp.Value)
{
Console.WriteLine(ev.WriteToString());
}
}
}
}
}
}