Commit graph

9 commits

Author SHA1 Message Date
Michael Grzeschik
ea2764aa69 uvcsink: add probe handling for live pipelines
Currently the uvcsink is only capable to run in an application
that is handling the state transitions of the pipeline properly
by checking on streaming event from the uvcsink.

This code is improving the element by adding an fakesink to
consume possible videostream flow in case the pipeline state
is not changing on hosts streamoff.

This is helpfull when using local gst-launch pipelines where
the streaming event is not monitored to change the pipelines
state.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:05 +00:00
Michael Grzeschik
5d82deb2c5 uvcsink: add new bin element around v4l2sink
This patch adds an element to stream video data to an uvc video gadget.
The element handles the uvc events STREAMON, STREAMOFF, SETUP and DATA.
to start, stop and configure the video buffer flow by the use of pad
probes. It works with linux kernels of versions higher than v6.1.

The element makes use of the v4l2sink proxy property v4l2sink::device
to locate the corresponding device to parse the configfs for additional
data.

The code in uvc.c is basically derived from /lib/uvc.c in
https://git.ideasonboard.org/uvc-gadget.git.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:05 +00:00
Michael Grzeschik
6ef14df09b uvcsink: configfs.{c,h}: add helper function to parse by videodev
- add helper function video_find_config_name
- add helper function configfs_parse_uvc_videodev

With these helper functions it is possible to parse the
configfs entry corresponding to the used videodev.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:05 +00:00
Michael Grzeschik
079fc8216c uvcsink: configfs.c: use G_N_ELEMENTS instead of ARRAY_SIZE
We don't have ARRAY_SIZE in glib.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:05 +00:00
Michael Grzeschik
fd3a6ce642 uvcsink: configfs.c: fix globing in uvc_video_device
The gadget in the sysfs can be postfixed with an index.
Fix the globbing by adding a wildcard after /gadget*/.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:05 +00:00
Michael Grzeschik
38aa1fc414 uvcsink: configfs.c: refactor location of GUID formats
- move GUID handling to beginning

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:05 +00:00
Michael Grzeschik
da61d8f96d uvcsink: configfs.{c,h}: add parsing of more fields from format
- add parsing of dwMaxVideoFrameBufferSize

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:05 +00:00
Michael Grzeschik
e50dcac517 uvcsink: configfs.c: fix code for local usage
- use local header file and remove unused reference to tools.h

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:05 +00:00
Michael Grzeschik
42c53f971c uvcsink: add configfs.{c,h} from https://git.ideasonboard.org/uvc-gadget.git
- imported both files and run gst-indent on them

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:04 +00:00