[FAQ] TDA4VM: Enable CSI-TX output instead of DSS output in the capture demos of vision_apps

Currently, the single cam and multi-cam cam demos of vision_apps uses Display Sub System (DSS) to put out the CSI-RX capture data onto the display.

The flow diagram for the same could be seen below :

Single Cam Flow

Vision Apps User Guide: Single Camera VPAC Application

Multi Cam Flow 

Vision Apps User Guide: Multi Camera VPAC Application

In order to remove the dependency of display sub system and let the captured data be sent out of the csi-tx module, the single-cam and multi-cam applications are modified in the below patch.

The below patch is built and tested on SDK 8.6.

Please apply this patch to the vision_apps folder of the RTOS SDK.

/cfs-file/__key/communityserver-discussions-components-files/791/enable_5F00_CSITX_5F00_output.patch

The patch removes the display node and instead adds a Display M2M node (to convert the data_format from NV12 to YUV422) and then the YUV422 image is sent to the CSI-TX Node through the CSI-TX instance 0.

The changes are under a MACRO "USE_CSITX". 

Disabling this macro and rebuilding the application will get back the display node into the application.

Regards,

Nikhil