linux/drivers/media/common
Hans Verkuil a10b215325 media: vb2: add (un)prepare_streaming queue ops
When userspace called VIDIOC_STREAMON, then you want to claim any streaming
resources needed and validate the video pipeline. Waiting for
start_streaming to be called is too late, since that can be postponed
until the required minimum of buffers is queued.

So add a prepare_streaming op (optional) that can be used for that
purpose, and a matching unprepare_streaming op (optional) that can
release any claimed resources. The unprepare_streaming op is called
when VIDIOC_STREAMOFF is called and q->streaming is 1, or when the
filehandle is closed while q->streaming is 1.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-11-25 07:39:46 +00:00
..
b2c2 media: b2c2: flexcop: Convert to SPDX identifier 2021-12-07 11:29:58 +01:00
siano media: siano: use DEFINE_MUTEX() for mutex lock 2021-09-30 10:07:43 +02:00
v4l2-tpg treewide: use get_random_{u8,u16}() when possible, part 1 2022-10-11 17:42:58 -06:00
videobuf2 media: vb2: add (un)prepare_streaming queue ops 2022-11-25 07:39:46 +00:00
btcx-risc.h
cx2341x.c media: Rename stateful codec control macros 2020-12-03 12:27:32 +01:00
cypress_firmware.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
cypress_firmware.h
Kconfig media: saa7146: deprecate hexium_gemini/orion, mxb and ttpci 2022-08-29 16:46:38 +02:00
Makefile media: saa7146: deprecate hexium_gemini/orion, mxb and ttpci 2022-08-29 16:46:38 +02:00
ttpci-eeprom.c media: move ttpci-eeprom to common 2021-06-02 11:16:15 +02:00
ttpci-eeprom.h media: move ttpci-eeprom to common 2021-06-02 11:16:15 +02:00
tveeprom.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00