private static bool tuneFrequency(TuningFrequency frequency)
{
Logger.Instance.Write("Tuning to frequency " + frequency.Frequency + " on " + frequency.TunerType);
TuningSpec tuningSpec;
TunerNodeType tunerNodeType;
int frequencyRetries = 0;
if (frequency.TunerType == TunerType.Satellite)
{
tuningSpec = new TuningSpec(Satellite.CurrentSatellite, (SatelliteFrequency)frequency);
tunerNodeType = TunerNodeType.Satellite;
}
else if (frequency.TunerType == TunerType.Terrestrial)
{
tuningSpec = new TuningSpec((TerrestrialFrequency)frequency);
tunerNodeType = TunerNodeType.Terrestrial;
}
else
{
tuningSpec = new TuningSpec((CableFrequency)frequency);
tunerNodeType = TunerNodeType.Cable;
}
bool finished = false;
while (!finished)
{
graph = BDAGraph.FindTuner(RunParameters.SelectedTuner, tunerNodeType, tuningSpec);
if (graph == null)
{
Logger.Instance.Write("Tuner not available");
return (false);
}
TimeSpan timeout = new TimeSpan();
bool done = false;
bool locked = false;
if (RunParameters.Options.Contains("NOSIGLOCK"))
{
Logger.Instance.Write("Option NOSIGLOCK: No lock check, wait 5 seconds instead");
locked = true;
Thread.Sleep(5000);
}
else
{
while (!done)
{
if (cancelGraph)
{
graph.Dispose();
return (false);
}
locked = graph.SignalLocked;
if (!locked)
{
int signalQuality = graph.SignalQuality;
if (signalQuality > 0)
{
Logger.Instance.Write("Signal not locked but signal quality > 0");
locked = true;
done = true;
}
else
{
Logger.Instance.Write("Signal not locked and signal quality not > 0");
Thread.Sleep(1000);
timeout = timeout.Add(new TimeSpan(0, 0, 1));
done = (timeout.TotalSeconds == RunParameters.LockTimeout.TotalSeconds);
}
}
else
done = true;
}
}
if (!locked)
{
Logger.Instance.Write("Failed to acquire signal");
graph.Dispose();
if (frequencyRetries == 1)
return (false);
else
{
frequencyRetries++;
Logger.Instance.Write("Retrying frequency");
}
}
else
{
finished = true;
Logger.Instance.Write("Signal acquired: lock is " + graph.SignalLocked + " quality is " + graph.SignalQuality + " strength is " + graph.SignalStrength);
}
}
return (true);
}
private void getData(BDAGraph graph, DumpParameters dumpParameters, BackgroundWorker worker)
{
Logger.Instance.Write(string.Format("Starting dump to {0}",dumpParameters.FileName));
int[] newPids;
if (dumpParameters.PidList != null && dumpParameters.PidList.Count != 0)
{
newPids = new int[dumpParameters.PidList.Count];
for (int index = 0; index < dumpParameters.PidList.Count; index++)
newPids[index] = dumpParameters.PidList[index];
}
else
{
newPids = new int[1];
newPids[0] = -1;
}
graph.ChangePidMapping(newPids);
DateTime startTime = DateTime.Now;
int lastSize = 0;
while (!worker.CancellationPending)
{
Thread.Sleep(100);
int increment = 5;
if (dumpParameters.PidList != null && dumpParameters.PidList.Count != 0)
increment = 1;
int buffer_space = graph.BufferSpaceUsed/(1024*1024);
if (buffer_space > 40)
{
graph.clear_buffer();
}
int size = graph.DumpFileSize / (1024 * 1024);
if (size >= lastSize + increment)
{
Logger.Instance.Write("Record/Buffer sizes: (" + size + "/"+buffer_space+")");
worker.ReportProgress((int)size);
lastSize = size;
}
}
finalSize = graph.DumpFileSize;
Logger.Instance.Write("Dump completed - file size now " + finalSize + " bytes");
}
private string checkTuning(BDAGraph graph, DumpParameters dumpParameters, BackgroundWorker worker)
{
TimeSpan timeout = new TimeSpan();
bool done = false;
bool locked = false;
int frequencyRetries = 0;
while (!done)
{
if (worker.CancellationPending)
{
Logger.Instance.Write("Dump abandoned by user");
return (null);
}
locked = graph.SignalLocked;
if (!locked)
{
int signalQuality = graph.SignalQuality;
if (signalQuality > 0)
{
Logger.Instance.Write("Signal not locked but signal quality > 0");
locked = true;
done = true;
}
else
{
if (!dumpParameters.UseSignalPresent)
{
Logger.Instance.Write("Signal not locked and signal quality not > 0");
Thread.Sleep(1000);
timeout = timeout.Add(new TimeSpan(0, 0, 1));
done = (timeout.TotalSeconds == dumpParameters.SignalLockTimeout);
}
else
{
bool signalPresent = graph.SignalPresent;
if (signalPresent)
{
Logger.Instance.Write("Signal present");
locked = true;
done = true;
}
else
{
Logger.Instance.Write("Signal not present");
Thread.Sleep(1000);
timeout = timeout.Add(new TimeSpan(0, 0, 1));
done = (timeout.TotalSeconds == dumpParameters.SignalLockTimeout);
}
}
if (done)
{
done = (frequencyRetries == 2);
if (done)
Logger.Instance.Write("<e> Failed to acquire signal");
else
{
Logger.Instance.Write("Retrying frequency");
timeout = new TimeSpan();
frequencyRetries++;
}
}
}
}
else
{
Logger.Instance.Write("Signal acquired: lock is " + graph.SignalLocked + " quality is " + graph.SignalQuality + " strength is " + graph.SignalStrength);
done = true;
}
}
if (locked)
return (null);
else
return ("<e> The tuner failed to acquire a signal for frequency " + dumpParameters.ScanningFrequency.ToString());
}
private static BDAGraph checkTunerAvailability(Tuner tuner, TuningSpec tuningSpec, bool repeatDiseqc, bool switchAfterPlay, string dumpFileName)
{
if (!RunParameters.Instance.DebugIDs.Contains("USEDVBLINK"))
{
if (tuner.Name.ToUpperInvariant().StartsWith("DVBLINK"))
return (null);
}
BDAGraph graph = new BDAGraph("BDA", tuningSpec, tuner, dumpFileName);
graph.LogFilters();
if (tuningSpec.Frequency.TunerType == TunerType.Satellite && ((SatelliteFrequency)tuningSpec.Frequency).SatelliteDish.DiseqcSwitch != null)
return (checkDiseqcAvailability(graph, tuner, tuningSpec, repeatDiseqc, switchAfterPlay));
else
{
if (graph.Play())
return (graph);
else
{
Logger.Instance.Write("Tuner in use - ignored: " + tuner.Name);
graph.Dispose();
return (null);
}
}
}
private static BDAGraph checkDiseqcAvailability(BDAGraph graph, Tuner tuner, TuningSpec tuningSpec, bool repeatDiseqc, bool switchAfterPlay)
{
if (RunParameters.Instance.Options.Contains("USESAFEDISEQC"))
{
Logger.Instance.Write("Processing using safe DiSEqC switching method");
if (!graph.Play())
{
Logger.Instance.Write("Tuner in use - ignored: " + tuner.Name);
graph.Dispose();
return (null);
}
graph.Dispose();
graph = new BDAGraph("BDA", tuningSpec, tuner);
}
else
Logger.Instance.Write("Processing using unsafe DiSEqC switching method");
SwitchReply switchReply = SwitchReply.NotSet;
if (!switchAfterPlay)
{
Logger.Instance.Write("Processing Diseqc command before running graph");
switchReply = DiseqcHandlerBase.ProcessDisEqcSwitch(tuningSpec, tuner, graph.tunerFilter);
Thread.Sleep(500);
}
if (!graph.Play())
{
Logger.Instance.Write("Tuner in use - ignored: " + tuner.Name);
graph.Dispose();
return (null);
}
if (switchReply == SwitchReply.Failed && repeatDiseqc)
{
Logger.Instance.Write("Repeating DiSEqC command due to initial failure");
switchReply = DiseqcHandlerBase.ProcessDisEqcSwitch(tuningSpec, tuner, graph.tunerFilter);
}
else
{
if (switchAfterPlay)
{
Logger.Instance.Write("Processing Diseqc command after running graph");
switchReply = DiseqcHandlerBase.ProcessDisEqcSwitch(tuningSpec, tuner, graph.tunerFilter);
}
}
return (graph);
}
/// <summary>
/// Initialize a new instance of the BDAGraph1 class for dumping a transport stream.
/// </summary>
/// <param name="componentName">The name of the current component.</param>
/// <param name="tuningSpec">A tuning spec instance with details of the tuning requirements.</param>
/// <param name="tunerSpec">A tuner spec instance specifying the tuner to be used.</param>
/// <param name="dumpFileName">The name of the dump file.</param>
public BDAGraph(string componentName, TuningSpec tuningSpec, Tuner tunerSpec, string dumpFileName)
: base(componentName)
{
currentGraph = this;
this.tuningSpec = tuningSpec;
this.tunerSpec = tunerSpec;
createTuningSpace(tuningSpec);
createTuneRequest(tuningSpace, tuningSpec);
this.dumpFileName = dumpFileName;
buildGraph(tuningSpace, tunerSpec, tuningSpec);
}