The DMA to Overlay feature enables you to design an external V4L2 camera source driver to DMA video content (in the form of YUV pixels) directly into video memory that gets displayed via the overlay plane. The DMA to Overlay feature is supported in the following two conditions:
• From kernel level without X Windows and GStreamer on primary display only. For details of the feature design and configuration, please refer to the Early Direct Camera Presentation on Intel® Atom™ Processor E6xx Series Application Note.
• In X Windows with GStreamer. For details of the feature design and configuration, please refer to the Intel® EMGD Direct Camera Presentation Interface Application Note.