gstreamer: Implement element EOS handling

This commit implements EOS handling for events sent to the libcamerasrc
element by the send_event method (which can happen when pressing
Ctrl-C while running gst-launch-1.0 -e, see below). EOS events from
downstream elements returning GST_FLOW_EOS are not considered here.

To archive this add a function for the send_event method which handles
the GST_EVENT_EOS event. This function will set an atomic to the
received event and push this EOS event to all source pads in the running
task.

Also set the GST_ELEMENT_FLAG_SOURCE flag to identify libcamerasrc as a
source element which enables it to receive EOS events sent to the
(pipeline) bin containing it. This in turn enables libcamerasrc
to receive EOS events, for example, from gst-launch-1.0 with
the -e (--eos-on-shutdown) flag applied.

Bug: https://bugs.libcamera.org/show_bug.cgi?id=91
Signed-off-by: Jaslo Ziska <jaslo@ziska.de>
Acked-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>

0 files changed, 0 insertions, 0 deletions