/// <summary>
/// Verbindet ein Zugriffsmodul mit einem DVB.NET DirectShow Graphen zur Anzeige
/// von Bild und Ton.
/// </summary>
/// <remarks>
/// Dabei wird der Thread zur Befüllung des Graphen erzeugt.
/// </remarks>
/// <param name="graph">Der DVB.NET DirectShow Graph.</param>
/// <exception cref="ArgumentNullException">Der Parameter darf nicht <i>null</i> sein.</exception>
/// <exception cref="NotSupportedException">Die Methode darf nur einmal aufgerufen werden.</exception>
internal void SetGraph(DisplayGraph graph)
{
// Validate
if (null == graph)
{
throw new ArgumentNullException("graph");
}
if (null != m_Graph)
{
throw new NotSupportedException();
}
// Remember
m_Graph = graph;
// Create threads
m_AudioThread = new Thread(AudioFeed)
{
Name = "DVB.NET Audio", IsBackground = true
};
m_VideoThread = new Thread(VideoFeed)
{
Name = "DVB.NET Video", IsBackground = true
};
// Set apartment - just in case
m_AudioThread.SetApartmentState(ApartmentState.MTA);
m_VideoThread.SetApartmentState(ApartmentState.MTA);
// Start threads
m_AudioThread.Start();
m_VideoThread.Start();
}
/// <summary>
/// Fordert den DirectShow Graphen auf, alle zwischengespeicherten Daten zu
/// ignorieren.
/// </summary>
/// <remarks>
/// Ein Aufruf erfolgt im Allgemeinen nach einem Senderwechsel.
/// </remarks>
public virtual void ClearBuffers()
{
// Load graph
DisplayGraph graph = m_Graph;
// Forward
if (graph != null)
{
graph.InjectorFilter.ClearBuffers();
}
}
/// <summary>
/// Befüllt die Bildspur mit Daten.
/// </summary>
private void VideoFeed()
{
// Load the graph to use
DisplayGraph graph = m_Graph;
// Died early
if (graph == null)
{
return;
}
// Process
for (; ;)
{
// Wait for video data
if (!m_Disposed)
{
// Wait if necessary
if (!m_HasVideoData)
{
lock (m_VideoSync)
if (!m_HasVideoData)
{
if (m_HasExternalFeed)
{
Monitor.Wait(m_VideoSync);
}
else
{
Monitor.Wait(m_VideoSync, 1);
}
}
}
// Reset
m_HasVideoData = false;
}
// Done
if (m_Disposed)
{
break;
}
// Skip
if (!m_Running)
{
continue;
}
// Get the next chunk
byte[] chunk = GetNextChunk(true);
// Check for data
if (chunk == null)
{
continue;
}
// Read current version - before testing for m_Running!
int version = graph.InjectorFilter.VideoInjectorVersion;
// Process
if (m_Running)
{
graph.InjectorFilter.InjectVideo(version, chunk, 0, chunk.Length);
}
}
// Cleanup
graph.InjectorFilter.InjectVideo(null, 0, 0);
}
/// <summary>
/// Verbindet ein Zugriffsmodul mit einem DVB.NET DirectShow Graphen zur Anzeige
/// von Bild und Ton.
/// </summary>
/// <remarks>
/// Dabei wird der Thread zur Befüllung des Graphen erzeugt.
/// </remarks>
/// <param name="graph">Der DVB.NET DirectShow Graph.</param>
/// <exception cref="ArgumentNullException">Der Parameter darf nicht <i>null</i> sein.</exception>
/// <exception cref="NotSupportedException">Die Methode darf nur einmal aufgerufen werden.</exception>
internal void SetGraph( DisplayGraph graph )
{
// Validate
if (null == graph)
throw new ArgumentNullException( "graph" );
if (null != m_Graph)
throw new NotSupportedException();
// Remember
m_Graph = graph;
// Create threads
m_AudioThread = new Thread( AudioFeed ) { Name = "DVB.NET Audio", IsBackground = true };
m_VideoThread = new Thread( VideoFeed ) { Name = "DVB.NET Video", IsBackground = true };
// Set apartment - just in case
m_AudioThread.SetApartmentState( ApartmentState.MTA );
m_VideoThread.SetApartmentState( ApartmentState.MTA );
// Start threads
m_AudioThread.Start();
m_VideoThread.Start();
}
