Auto-detection of media device to use for camera handling.
Auto-detection of bridge and interface subdevices
to configure by checking media device topology.
Change the way subdev are configured for better handling
of various topologies.
Ensure that GStreamer pixel format used in output of
v4l2src (RGB16 here) fit exactly the media bus format
used on subdevices side (RGB565_2X8_LE here). Nevertheless,
in case of USB camera, keep GStreamer pixel format
auto-negotiated between v4l2src and waylandsink.
Signed-off-by: Hugues Fruchet <hugues.fruchet@foss.st.com>
Change-Id: I49c4200d8edb3b4556f5dd348ce78651926d0cc5
3d51badd5c