d055a76c006540defd4eb80dcdea217cee0a141a - linux

commit	d055a76c006540defd4eb80dcdea217cee0a141a	[log] [tgz]
author	Benjamin Gaignard <benjamin.gaignard@collabora.com>	Thu Nov 09 17:35:00 2023 +0100
committer	Mauro Carvalho Chehab <mchehab@kernel.org>	Thu Nov 23 12:38:05 2023 +0100
tree	a950d391cfd3be26f0ffc2672c066472fd032446
parent	c838530d230bc638d79b78737fc4488ffc28c1ee [diff]

media: core: Report the maximum possible number of buffers for the queue

Use one of the struct v4l2_create_buffers reserved bytes to report
the maximum possible number of buffers for the queue.
V4l2 framework set V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS flags in queue
capabilities so userland can know when the field is valid.
Does the same change in v4l2_create_buffers32 structure.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst[diff]
Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst[diff]
drivers/media/common/videobuf2/videobuf2-v4l2.c[diff]
drivers/media/v4l2-core/v4l2-compat-ioctl32.c[diff]
drivers/media/v4l2-core/v4l2-ioctl.c[diff]
include/uapi/linux/videodev2.h[diff]

6 files changed

tree: a950d391cfd3be26f0ffc2672c066472fd032446