(SFrameMatrixSynchronizer): add new signals to be consistent with SMatrixTLSynchronizer

What does this MR do?

Add slots to be compatible with the baviour of SMatrixTLSynchronizer in order to connect with a SStatus service. The ExStereoARCV example is updated to show its usage.

The configuration of SMatrixTLSynchronizer is updated to take into account the wish to send the status of some matrices in timelines in SMatrixSynchronizer.

Now, it's possible to add the tag sendStatus in a <key uid="matrixX" sendStatus="true|false"/>.

In this way, if you have multiple timelines and multiple matrices, you can choose which one you want to send its status like:

<inout group="matrices0">
   <key uid="matrix0" sendStatus="true"/>
   <key uid="matrix1" /> <!-- sendStatus is set to false by default -->
   <key uid="matrix2" />
</inout>
<inout group="matrices1">
   <key uid="matrix3" sendStatus="true"/>
   <key uid="matrix4" />
</inout>

How to test it?

• Build ExStereoARCV
• Load the calibration, left and right view and play the stream in the given data
• See that the SStatus on the bottom view change when the pose matrix is present (i.e. extracted from the TL by the SFrameMatrixSynchronizer)

Data

• https://owncloud.ircad.fr/index.php/s/33G4qlHTcejoQCm

Some results

ExSimpleARCV_SStatus_compress

Associated Issues/Merge Requests

• Issues
  • Closes #315 (closed)