protected MMALConnectionImpl(MMAL_CONNECTION_T *ptr, MMALPortBase output, MMALPortBase input, MMALDownstreamComponent inputComponent, MMALComponentBase outputComponent)
{
this.Ptr = ptr;
this.OutputPort = output;
this.InputPort = input;
this.DownstreamComponent = inputComponent;
this.UpstreamComponent = outputComponent;
this.Enable();
}
/// <summary>
/// Represents the native callback method for a connection between two ports.
/// </summary>
/// <param name="connection">The native pointer to a MMAL_CONNECTION_T struct.</param>
/// <returns>The value of all flags set against this connection.</returns>
internal virtual int NativeConnectionCallback(MMAL_CONNECTION_T *connection)
{
lock (MMALConnectionImpl.ConnectionLock)
{
if (MMALCameraConfig.Debug)
{
MMALLog.Logger.Debug("Inside native connection callback");
}
var queue = new MMALQueueImpl(connection->Queue);
var bufferImpl = queue.GetBuffer();
if (bufferImpl != null)
{
if (MMALCameraConfig.Debug)
{
bufferImpl.PrintProperties();
}
if (bufferImpl.Length > 0)
{
ConnectionCallbackProvider.FindCallback(this).InputCallback(bufferImpl);
}
this.InputPort.SendBuffer(bufferImpl);
}
else
{
queue = new MMALQueueImpl(connection->Pool->Queue);
bufferImpl = queue.GetBuffer();
if (bufferImpl != null)
{
if (MMALCameraConfig.Debug)
{
bufferImpl.PrintProperties();
}
if (bufferImpl.Length > 0)
{
ConnectionCallbackProvider.FindCallback(this).OutputCallback(bufferImpl);
}
this.OutputPort.SendBuffer(bufferImpl);
}
else
{
MMALLog.Logger.Debug("Buffer could not be obtained by connection callback");
}
}
}
return((int)connection->Flags);
}
/// <summary>
/// Represents the native callback method for a connection between two ports.
/// </summary>
/// <param name="connection">The native pointer to a MMAL_CONNECTION_T struct.</param>
/// <returns>The value of all flags set against this connection.</returns>
protected virtual int NativeConnectionCallback(MMAL_CONNECTION_T *connection)
{
if (MMALCameraConfig.Debug)
{
MMALLog.Logger.LogDebug("Inside native connection callback");
}
var queue = new MMALQueueImpl(connection->Queue);
var bufferImpl = queue.GetBuffer();
if (bufferImpl.CheckState())
{
if (MMALCameraConfig.Debug)
{
bufferImpl.PrintProperties();
}
if (bufferImpl.Length > 0)
{
this.CallbackHandler.InputCallback(bufferImpl);
}
this.InputPort.SendBuffer(bufferImpl);
}
else
{
queue = new MMALQueueImpl(connection->Pool->Queue);
bufferImpl = queue.GetBuffer();
if (bufferImpl.CheckState())
{
if (MMALCameraConfig.Debug)
{
bufferImpl.PrintProperties();
}
if (bufferImpl.Length > 0)
{
this.CallbackHandler.OutputCallback(bufferImpl);
}
this.OutputPort.SendBuffer(bufferImpl);
}
else
{
MMALLog.Logger.LogInformation("Buffer could not be obtained by connection callback");
}
}
return((int)connection->Flags);
}
/// <summary>
/// Creates a new instance of <see cref="MMALConnectionImpl"/>.
/// </summary>
/// <param name="ptr">The native connection pointer.</param>
/// <param name="output">The upstream component's output port.</param>
/// <param name="input">The downstream component's input port.</param>
/// <param name="inputComponent">The upstream component.</param>
/// <param name="outputComponent">The downstream component.</param>
/// <param name="useCallback">Configure the connection to intercept native callbacks. Note: will adversely impact performance.</param>
protected MMALConnectionImpl(MMAL_CONNECTION_T *ptr, OutputPortBase output, InputPortBase input, MMALDownstreamComponent inputComponent, MMALComponentBase outputComponent, bool useCallback)
{
this.Ptr = ptr;
this.OutputPort = output;
this.InputPort = input;
this.DownstreamComponent = inputComponent;
this.UpstreamComponent = outputComponent;
if (useCallback)
{
this.ConfigureConnectionCallback(output, input);
}
this.Enable();
if (useCallback)
{
this.OutputPort.SendAllBuffers(this.ConnectionPool);
}
}
/// <summary>
/// Creates a new instance of <see cref="MMALConnectionImpl"/>.
/// </summary>
/// <param name="ptr">The native connection pointer.</param>
/// <param name="output">The upstream component's output port.</param>
/// <param name="input">The downstream component's input port.</param>
/// <param name="inputComponent">The upstream component.</param>
/// <param name="outputComponent">The downstream component.</param>
/// <param name="useCallback">
/// Configure the connection to intercept native callbacks. Note: will adversely impact performance. In addition, this will implicitly enable
/// zero copy functionality on both the source and sink ports.
/// </param>
protected MMALConnectionImpl(MMAL_CONNECTION_T *ptr, IOutputPort output, IInputPort input, IDownstreamComponent inputComponent, IComponent outputComponent, bool useCallback)
{
this.Ptr = ptr;
this.OutputPort = output;
this.InputPort = input;
this.DownstreamComponent = inputComponent;
this.UpstreamComponent = outputComponent;
if (useCallback)
{
this.CallbackHandler = new DefaultConnectionCallbackHandler(this);
this.ConfigureConnectionCallback(output, input);
}
this.Enable();
if (useCallback)
{
this.OutputPort.SendAllBuffers(this.ConnectionPool);
}
}
public static extern unsafe MMALUtil.MMAL_STATUS_T mmal_connection_event_format_changed(MMAL_CONNECTION_T *connection, MMAL_BUFFER_HEADER_T *buffer);
public static extern unsafe MMALUtil.MMAL_STATUS_T mmal_connection_disable(MMAL_CONNECTION_T *connection);
public static extern unsafe void mmal_connection_acquire(MMAL_CONNECTION_T *connection);
public static unsafe extern MMALUtil.MMAL_STATUS_T mmal_connection_enable(MMAL_CONNECTION_T *connection);
