/// <summary>
/// Remove a callback handler for a given connection.
/// </summary>
/// <param name="connection">The connection we are removing the callback handler for.</param>
public static void RemoveCallback(MMALConnectionImpl connection)
{
if (WorkingHandlers.ContainsKey(connection))
{
WorkingHandlers.Remove(connection);
}
}
/// <summary>
/// Finds and returns a <see cref="IConnectionCallbackHandler"/> for a given connection. If no handler is registered, a
/// <see cref="DefaultConnectionCallbackHandler"/> will be returned.
/// </summary>
/// <param name="connection">The connection for which we are retrieving the callback handler.</param>
/// <returns>A <see cref="IConnectionCallbackHandler"/> for a given connection. If no handler is registered, a
/// <see cref="DefaultConnectionCallbackHandler"/> will be returned.</returns>
public static IConnectionCallbackHandler FindCallback(MMALConnectionImpl connection)
{
if (WorkingHandlers.ContainsKey(connection))
{
return(WorkingHandlers[connection]);
}
return(new DefaultConnectionCallbackHandler(connection));
}
/// <inheritdoc />
public override InputPortBase ConnectTo(MMALDownstreamComponent destinationComponent, int inputPort = 0, bool useCallback = false)
{
if (this.ConnectedReference != null)
{
MMALLog.Logger.Warn("A connection has already been established on this port");
return(destinationComponent.Inputs[inputPort]);
}
var connection = MMALConnectionImpl.CreateConnection(this, destinationComponent.Inputs[inputPort], destinationComponent, useCallback);
this.ConnectedReference = connection;
destinationComponent.Inputs[inputPort].ConnectedReference = connection;
return(destinationComponent.Inputs[inputPort]);
}
/// <summary>
/// Connects two components together by their input and output ports.
/// </summary>
/// <param name="destinationComponent">The component we want to connect to.</param>
/// <param name="inputPort">The input port of the component we want to connect to.</param>
/// <param name="useCallback">Flag to use connection callback (adversely affects performance).</param>
/// <returns>The connection instance between the source output and destination input ports.</returns>
public virtual IConnection ConnectTo(IDownstreamComponent destinationComponent, int inputPort = 0, bool useCallback = false)
{
if (this.ConnectedReference != null)
{
MMALLog.Logger.LogWarning($"{this.Name}: A connection has already been established on this port");
return(this.ConnectedReference);
}
var connection = MMALConnectionImpl.CreateConnection(this, destinationComponent.Inputs[inputPort], destinationComponent, useCallback);
this.ConnectedReference = connection;
destinationComponent.Inputs[inputPort].ConnectTo(this, connection);
return(connection);
}
/// <summary>
/// Creates a new instance of <see cref="ConnectionCallbackHandlerBase"/>.
/// </summary>
/// <param name="connection">The connection.</param>
protected ConnectionCallbackHandlerBase(MMALConnectionImpl connection)
{
this.WorkingConnection = connection;
}
/// <summary>
/// Create a new instance of <see cref="DefaultConnectionCallbackHandler"/>.
/// </summary>
/// <param name="connection">The connection object.</param>
public DefaultConnectionCallbackHandler(MMALConnectionImpl connection)
: base(connection)
{
}
