gstreamer/subprojects/gst-plugins-good/sys/v4l2
Hou Qi 105d232fde v4l2bufferpool: queue back the buffer flagged LAST but empty
Some decoder drivers need to wait enough capture buffers before
starting to decode. But the dequeued buffer flag LAST but empty
has no chance to queue back to driver, which makes decode hang
after seek. So need to queue back such kind of buffer to driver.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6579>
2024-04-15 18:07:17 +00:00
..
ext v4l2: Sync headers to current media_stage 2023-06-15 14:32:32 +00:00
gstv4l2.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2allocator.c v4l2: allocator: Fix unref log/trace on memory release 2024-04-06 11:44:27 +00:00
gstv4l2allocator.h
gstv4l2bufferpool.c v4l2bufferpool: queue back the buffer flagged LAST but empty 2024-04-15 18:07:17 +00:00
gstv4l2bufferpool.h v4l2: pool: Flush events on capture queue 2023-05-01 15:08:10 -04:00
gstv4l2codec.c
gstv4l2codec.h
gstv4l2colorbalance.c
gstv4l2colorbalance.h
gstv4l2deviceprovider.c v4l2: device provider: Fix GMainLoop leak 2023-05-03 10:04:58 +00:00
gstv4l2deviceprovider.h
gstv4l2element.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2elements.h
gstv4l2fwhtenc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2fwhtenc.h
gstv4l2h263enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2h263enc.h
gstv4l2h264codec.c
gstv4l2h264codec.h
gstv4l2h264enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2h264enc.h
gstv4l2h265codec.c
gstv4l2h265codec.h
gstv4l2h265enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2h265enc.h
gstv4l2jpegenc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2jpegenc.h
gstv4l2mpeg2codec.c
gstv4l2mpeg2codec.h
gstv4l2mpeg4codec.c
gstv4l2mpeg4codec.h
gstv4l2mpeg4enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2mpeg4enc.h
gstv4l2object.c v4l2: enforce a pixel aspect ratio of 1/1 if no data are available 2024-04-07 10:14:18 +00:00
gstv4l2object.h v4l2object: scale the encoded sizeimage based on maximum resolution 2023-10-23 14:10:56 +00:00
gstv4l2radio.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2radio.h
gstv4l2sink.c v4l2: Fix SIGSEGV on 'change state' during 'format change' 2022-12-01 12:47:54 +00:00
gstv4l2sink.h
gstv4l2src.c v4l2src: need maintain the caps order in caps compare when fixate 2024-03-28 12:53:01 +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
gstv4l2tuner.c gstv4l2tuner: return NULL if no norm set 2022-02-20 21:38:40 +00:00
gstv4l2tuner.h
gstv4l2videodec.c v4l2videodec: Correctly free caps to avoid memory leak 2023-09-24 12:50:01 +00:00
gstv4l2videodec.h v4l2: videodec: Don't forcibly drain on resolution changes 2023-05-01 13:44:53 -04:00
gstv4l2videoenc.c v4l2videoenc: unconditionally activate the OUTPUT pool 2023-10-11 19:35:54 +00:00
gstv4l2videoenc.h
gstv4l2vidorient.c
gstv4l2vidorient.h
gstv4l2vp8codec.c
gstv4l2vp8codec.h
gstv4l2vp8enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2vp8enc.h
gstv4l2vp9codec.c
gstv4l2vp9codec.h
gstv4l2vp9enc.c Replace gst-i18n-*.h with gi18n-lib.h 2022-04-19 18:01:06 +00:00
gstv4l2vp9enc.h
meson.build meson: Add a wrap file for libgudev 2023-04-19 22:47:19 +00:00
README
tuner.c
tuner.h
tunerchannel.c
tunerchannel.h
tunernorm.c
tunernorm.h
v4l2-utils.c v4l2: drop use of GSlice 2023-01-24 15:25:07 +00:00
v4l2-utils.h
v4l2_calls.c v4l2: Change to query only up to V4L2_CID_PRIVATE_BASE+V4L2_CID_MAX_CTRLS 2023-06-13 13:04:37 +00:00

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/