Set allow_zero_bytesused, to let gst-launch work, this lead to the need
to implement V4L2_DEC_CMD_STOP, dummy for now.

Implement g_fmt_vid_cap, called by gst-launch before queuing any capture
buffers, this also required some fixes in jpeg_parse and buf_queue,
which wrongly assumed capture buffers are enqueued before output buffers.
So, import the resolution and pixel-format from the output queue,
if the capture queue is not set-up yet.

Add release_active_buffers and use it in stop_streaming to properly
clean-up active buffers, this fixes warning at gst-launch stop with Ctrl+C

Check for decoding/encoding error in interrupt handler and print CAST IP
error status, found some yuv422 images with errors in SOS marker.

Partially implemented subscribe_event, V4L2_EVENT_EOS is not working yet,
will be addressed in a subsequent fix.

Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Laurentiu Palcu &lt;laurentiu.palcu@nxp.com, Robert Chiras <robert.chiras@nxp.com>