/// <summary>
/// Führt die DiSEqC Steuerung aus.
/// </summary>
/// <param name="token">Die aktuellen Informationen zum Wechsel der Quellgruppe.</param>
/// <returns>Meldet, wie die weitere Abarbeitung zu erfolgen hat.</returns>
private static PipelineResult ApplyDiSEqC(DataGraph.TuneToken token)
{
// Check mode
var location = (token == null) ? null : token.GroupLocation as SatelliteLocation;
if (location == null)
{
return(PipelineResult.Continue);
}
// Load tuner
var tuner = token.Pipeline.Graph.TunerFilter;
if (tuner == null)
{
return(PipelineResult.Continue);
}
// Verify that grpah is created
if (token.Pipeline.Graph.TransportStreamAnalyser == null)
{
return(PipelineResult.Continue);
}
// Initial
uint positionOption;
switch (location.LNB)
{
case DiSEqCLocations.DiSEqC1: positionOption = 0x0000; break;
case DiSEqCLocations.DiSEqC2: positionOption = 0x0001; break;
case DiSEqCLocations.DiSEqC3: positionOption = 0x0100; break;
case DiSEqCLocations.DiSEqC4: positionOption = 0x0101; break;
default: positionOption = uint.MaxValue; break;
}
// Request interface
var filter = tuner.GetFrequencyFilter();
if (filter != null)
{
// Do it the more or less modern way
try
{
// Load
filter.Range = positionOption;
}
finally
{
// Cleanup
BDAEnvironment.Release(ref filter);
}
}
else
{
// Attach to the tuning space
var space = token.TuneRequest.TuningSpace;
try
{
// Store
((IDVBSTuningSpace)space).InputRange = positionOption.ToString();
}
finally
{
// Cleanup
BDAEnvironment.Release(ref space);
}
}
// Next
return(PipelineResult.Continue);
}
/// <summary>
/// Führt die DiSEqC Steuerung aus.
/// </summary>
/// <param name="token">Die aktuellen Informationen zum Wechsel der Quellgruppe.</param>
/// <returns>Meldet, wie die weitere Abarbeitung zu erfolgen hat.</returns>
private PipelineResult ApplyDiSEqC(DataGraph.TuneToken token)
{
// Not active
var diseqc = (token == null) ? null : token.DiSEqCMessage;
if (diseqc == null)
{
// Reset request - or first call at all
m_LastDiSEqC = null;
// Next
return(PipelineResult.Continue);
}
// Attach to tuner
var tuner = token.Pipeline.Graph.TunerFilter;
if (tuner == null)
{
return(PipelineResult.Continue);
}
// Verify that grpah is created
if (token.Pipeline.Graph.TransportStreamAnalyser == null)
{
return(PipelineResult.Continue);
}
// Request the message to send
if (diseqc.Equals(m_LastDiSEqC))
{
return(PipelineResult.Continue);
}
// Attach to the one input pin of the tuner
using (var input = tuner.GetSinglePin(PinDirection.Input))
using (var propertySet = KsPropertySet.Create <DiSEqCMessage>(input.Interface))
if (propertySet != null)
{
// Create the identifier of the property to use
var nodeReference = KsPNode.Create(TunerExtensionPropertiesS2, TunerExtensionProperties.DiSEqC, 0);
// Check for support of the property
if (!propertySet.DoesSupport(nodeReference, PropertySetSupportedTypes.Set))
{
return(PipelineResult.Continue);
}
// Create structures
var message = new DiSEqCMessage();
// Create a copy
var command = (byte[])diseqc.Request.Clone();
// As long as necessary
try
{
// Prepare the message
message.Request = new byte[151];
// Fill the message
command.CopyTo(message.Request, 0);
// Configure
message.RequestLength = (byte)command.Length;
message.LastMessage = true;
message.Power = 0;
// Send the message
propertySet.Set(nodeReference, message);
}
catch
{
// Reset
m_LastDiSEqC = null;
// Forward
throw;
}
// Remember
m_LastDiSEqC = diseqc.Clone();
}
// Next
return(PipelineResult.Continue);
}
