mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-15 04:46:32 +00:00
32 lines
1.1 KiB
Text
32 lines
1.1 KiB
Text
v4l2 plugins
|
|
============
|
|
|
|
The idea is a bit the same as the idea for the v4l1 plugins. We want
|
|
one generic v4l2element, and a few child objects (probably only two:
|
|
v4l2src and v4l2sink):
|
|
|
|
/-------- v4l2src
|
|
v4l2element ---=
|
|
\-------- v4l2sink
|
|
|
|
Both v4l2src and v4l2sink have a uncompressed and a compressed
|
|
recording-/playback-mode. Since this is all part of v4l2, the 'client'
|
|
of these elements, i.e. an application using v4l2src/v4l2sink, will
|
|
hardly notice this. All capsnego stuff is done inside, and the plugin
|
|
knows which formats are compressed and which are not.
|
|
|
|
Please note that the v4l1 and the v4l2 plugins are *not* compatible
|
|
concerning properties. Naming has been kept the same where possible,
|
|
but in some cases, properties had to be removed or added to make
|
|
full use of v4l2.
|
|
|
|
V4L2 API: http://linux.bytesex.org/v4l2/.
|
|
http://v4l2spec.bytesex.org/
|
|
/usr/include/linux/videodev2.h or
|
|
|
|
Kernel patches available from
|
|
http://dl.bytesex.org/patches/.
|
|
|
|
Articles:
|
|
http://lwn.net/Articles/203924/
|
|
|