internal void ReleaseOutputBuffer(MMALBufferImpl bufferImpl)
{
bufferImpl.Release();
bufferImpl.Dispose();
try
{
if (!this.Enabled)
{
MMALLog.Logger.Warn("Port not enabled.");
}
if (this.BufferPool == null)
{
MMALLog.Logger.Warn("Buffer pool null.");
}
if (this.Enabled && this.BufferPool != null)
{
var newBuffer = MMALQueueImpl.GetBuffer(this.BufferPool.Queue.Ptr);
if (newBuffer != null)
{
this.SendBuffer(newBuffer);
}
else
{
MMALLog.Logger.Warn("Buffer null. Continuing.");
}
}
}
catch (Exception e)
{
MMALLog.Logger.Warn($"Unable to send buffer header. {e.Message}");
}
}
/// <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);
}
internal void ReleaseInputBuffer(MMALBufferImpl bufferImpl)
{
bufferImpl.Release();
if (this.Enabled && this.BufferPool != null)
{
var newBuffer = MMALQueueImpl.GetBuffer(this.BufferPool.Queue.Ptr);
//Populate the new input buffer with user provided image data.
var result = this.ManagedInputCallback(newBuffer, this);
bufferImpl.ReadIntoBuffer(result.BufferFeed, result.EOF);
try
{
if (this.Trigger != null && this.Trigger.CurrentCount > 0 && result.EOF)
{
MMALLog.Logger.Debug("Received EOF. Releasing.");
this.Trigger.Signal();
newBuffer.Release();
}
if (newBuffer != null)
{
this.SendBuffer(newBuffer);
}
else
{
MMALLog.Logger.Warn("Buffer null. Continuing.");
}
}
catch (Exception ex)
{
MMALLog.Logger.Warn($"Buffer handling failed. {ex.Message}");
}
}
}