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gstreamer/subprojects/gst-plugins-good/sys/v4l2
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Nicolas Dufresne c6be3d7505 v4l2: videodec: Don't forcibly drain on resolution changes 
Let the driver detects the change and reconfigure the capture side
transparently from there. This avoid reallocation of the output buffers,
and eliminates the need to stop and restart the capture task. This is
only happening if the driver have support for this, otherwise the old
behaviour is maintained.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4437>
2023-05-01 13:44:53 -04:00
..
ext v4l2: Add NV12_8L128 and NV12_10BE_8L128 2022-03-22 00:41:39 +00:00
gstv4l2.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2allocator.c v4l2: drop use of GSlice 2023-01-24 15:25:07 +00:00
gstv4l2allocator.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2bufferpool.c v4l2: bufferpool: Don't assert when orphaning is not needed 2023-05-01 13:43:36 -04:00
gstv4l2bufferpool.h v4l2: object: Move the GstPoll into v4l2object 2023-05-01 13:43:03 -04:00
gstv4l2codec.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2codec.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2colorbalance.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2colorbalance.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2deviceprovider.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2deviceprovider.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2element.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2elements.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2fwhtenc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2fwhtenc.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2h263enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2h263enc.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2h264codec.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2h264codec.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2h264enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2h264enc.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2h265codec.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2h265codec.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2h265enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2h265enc.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2jpegenc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2jpegenc.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2mpeg2codec.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2mpeg2codec.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2mpeg4codec.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2mpeg4codec.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2mpeg4enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2mpeg4enc.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2object.c v4l2: object: Move the GstPoll into v4l2object 2023-05-01 13:43:03 -04:00
gstv4l2object.h v4l2: object: Move the GstPoll into v4l2object 2023-05-01 13:43:03 -04:00
gstv4l2radio.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2radio.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2sink.c v4l2: Fix SIGSEGV on 'change state' during 'format change' 2022-12-01 12:47:54 +00:00
gstv4l2sink.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2src.c v4l2src: fix cannot reuse current caps when fixate caps in negotiation 2023-05-01 15:05:26 +00:00
gstv4l2src.h v4l2src: Add support for cropping at capture source input 2022-03-11 15:02:08 +00:00
gstv4l2transform.c gst-plugins-good: re-indent with GNU indent 2.2.12 2023-03-17 03:18:54 +00:00
gstv4l2transform.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2tuner.c gstv4l2tuner: return NULL if no norm set 2022-02-20 21:38:40 +00:00
gstv4l2tuner.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2videodec.c v4l2: videodec: Don't forcibly drain on resolution changes 2023-05-01 13:44:53 -04:00
gstv4l2videodec.h v4l2: videodec: Don't forcibly drain on resolution changes 2023-05-01 13:44:53 -04:00
gstv4l2videoenc.c v4l2: Fix SIGSEGV on 'change state' during 'format change' 2022-12-01 12:47:54 +00:00
gstv4l2videoenc.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2vidorient.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2vidorient.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2vp8codec.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2vp8codec.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2vp8enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2vp8enc.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2vp9codec.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2vp9codec.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
gstv4l2vp9enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2vp9enc.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
meson.build meson: Add a wrap file for libgudev 2023-04-19 22:47:19 +00:00
README Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
tuner.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
tuner.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
tunerchannel.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
tunerchannel.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
tunernorm.c Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
tunernorm.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
v4l2-utils.c v4l2: drop use of GSlice 2023-01-24 15:25:07 +00:00
v4l2-utils.h Move files from gst-plugins-good into the "subprojects/gst-plugins-good/" subdir 2021-09-24 16:13:50 -03:00
v4l2_calls.c gst-plugins-good: re-indent with GNU indent 2.2.12 2023-03-17 03:18:54 +00:00

README 

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/