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media: v4l2-ctrls: add change flag for when dimensions change

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Add a new V4L2_EVENT_CTRL_CH_DIMENSIONS change flag that is issued
when the dimensions of an array change as a result of a
__v4l2_ctrl_modify_dimensions() call.

This will inform userspace that there are new dimensions.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Hans Verkuil 2022-07-11 12:21:10 +02:00 • committed by Mauro Carvalho Chehab
parent 0975274557
commit 43cc0ec381
4 changed files with 9 additions and 1 deletions
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1
include/uapi/linux/videodev2.h
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@ -2435,6 +2435,7 @@ struct v4l2_event_vsync {
#define V4L2_EVENT_CTRL_CH_VALUE (1 << 0)
#define V4L2_EVENT_CTRL_CH_FLAGS (1 << 1)
#define V4L2_EVENT_CTRL_CH_RANGE (1 << 2)
#define V4L2_EVENT_CTRL_CH_DIMENSIONS (1 << 3)
struct v4l2_event_ctrl {
__u32 changes;