/// <summary>
/// Versucht den DVB.NET Datenstrom direkt mit dem zugehörigen Decoder zu verbinden.
/// </summary>
/// <param name="decoder">Ein manuell angelegter Decoder.</param>
/// <param name="source">Der zu verwendende Ausgang.</param>
/// <param name="mediaType">Das verwendete Format.</param>
/// <returns>Gesetzt, wenn die Verbindung aufgebaut wurde.</returns>
private bool TryDirectConnect(TypedComIdentity <IBaseFilter> decoder, OutputPin source, MediaType mediaType)
{
// In normal cases we should directly connect to the filter so try
var connected = false;
// Try manual connect
decoder.InspectAllPins(p => p.QueryDirection() == PinDirection.Input,
pin =>
{
// Skip on error
try
{
// Get the raw interface for the media type
var type = mediaType.GetReference();
// Process
using (var iFace = ComIdentity.Create <IPin>(pin))
source.Connect(iFace.Interface, type);
// Did it
connected = true;
}
catch (Exception)
{
}
// First pin only - even if it can not be used!
return(false);
});
// Failed
if (!connected)
{
return(false);
}
// Find the output of the decoder and render it
decoder.InspectAllPins(p => p.QueryDirection() == PinDirection.Output,
pin =>
{
// Create helper
using (var pinWrapper = ComIdentity.Create <IPin>(pin))
DirectShowObject.Render(pinWrapper.Interface);
// Did it
return(false);
});
// Report
return(connected);
}
/// <summary>
/// Ermittelt einen einzelnen Endpunkt.
/// </summary>
/// <param name="filter">Der zu betrachtende Filter.</param>
/// <param name="direction">Die zu untersuchende Seite des Filters.</param>
/// <returns>Eine Referenz auf den gewünschten Endpunkt.</returns>
/// <exception cref="ArgumentNullException">Es wurde kein Filter angegeben.</exception>
/// <exception cref="InvalidOperationException">Der angegeben Endpunkt existiert nicht.</exception>
public static TypedComIdentity <IPin> GetSinglePin(this TypedComIdentity <IBaseFilter> filter, PinDirection direction)
{
// Validate
if (filter == null)
{
throw new ArgumentNullException("filter");
}
// Result to use
TypedComIdentity <IPin> result = null;
// Use helper to check all of it
filter.InspectAllPins(p => p.QueryDirection() == direction, p =>
{
// At most one hit is allowed
if (result != null)
{
// Cleanup
result.Dispose();
// Report error
throw new InvalidOperationException(Properties.Resources.Exception_DuplicateEndpoint);
}
// Remember the first one
result = ComIdentity.Create(p);
});
// Ups
if (result != null)
{
return(result);
}
else
{
throw new InvalidOperationException(Properties.Resources.Exception_NoEndpoint);
}
}
/// <summary>
/// Versucht den DVB.NET Datenstrom direkt mit dem zugehörigen Decoder zu verbinden.
/// </summary>
/// <param name="decoder">Ein manuell angelegter Decoder.</param>
/// <param name="source">Der zu verwendende Ausgang.</param>
/// <param name="mediaType">Das verwendete Format.</param>
/// <returns>Gesetzt, wenn die Verbindung aufgebaut wurde.</returns>
private bool TryDirectConnect( TypedComIdentity<IBaseFilter> decoder, OutputPin source, MediaType mediaType )
{
// In normal cases we should directly connect to the filter so try
var connected = false;
// Try manual connect
decoder.InspectAllPins( p => p.QueryDirection() == PinDirection.Input,
pin =>
{
// Skip on error
try
{
// Get the raw interface for the media type
var type = mediaType.GetReference();
// Process
using (var iFace = ComIdentity.Create<IPin>( pin ))
source.Connect( iFace.Interface, type );
// Did it
connected = true;
}
catch (Exception)
{
}
// First pin only - even if it can not be used!
return false;
} );
// Failed
if (!connected)
return false;
// Find the output of the decoder and render it
decoder.InspectAllPins( p => p.QueryDirection() == PinDirection.Output,
pin =>
{
// Create helper
using (var pinWrapper = ComIdentity.Create<IPin>( pin ))
DirectShowObject.Render( pinWrapper.Interface );
// Did it
return false;
} );
// Report
return connected;
}
/// <summary>
/// Untersucht alle Endpunkte eines Filters.
/// </summary>
/// <param name="filter">Der zu betrachtende Filter.</param>
/// <param name="selector">Optional eine Auswahlfunktion.</param>
/// <param name="action">Optional eine Aktion, die pro Endpunkt ausgeführt werden soll.</param>
/// <exception cref="ArgumentNullException">Es wurde kein Filter angegeben.</exception>
public static void InspectAllPins(this TypedComIdentity <IBaseFilter> filter, Predicate <IPin> selector, Action <IPin> action)
{
// Forward
filter.InspectAllPins(selector, pin => { action(pin); return(true); });
}
/// <summary>
/// Untersucht alle Endpunkte eines Filters.
/// </summary>
/// <param name="filter">Der zu betrachtende Filter.</param>
/// <param name="action">Optional eine Aktion, die pro Endpunkt ausgeführt werden soll.</param>
/// <exception cref="ArgumentNullException">Es wurde kein Filter angegeben.</exception>
public static void InspectAllPins(this TypedComIdentity <IBaseFilter> filter, Action <IPin> action)
{
// Forward
filter.InspectAllPins(null, action);
}