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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2014-06-10 11:14:50 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-17 17:38:44 +0400 |
| commit | 5082c2417841e64df975789011e182ce99a9dacd (patch) | |
| tree | a7d7cabbd6688db9685fa4ef2ac4970664e7ad1e /include/uapi/linux/videodev2.h | |
| parent | 7e6a68210784dcea8e39fd9d4c9966f9c733ba09 (diff) | |
| download | linux-5082c2417841e64df975789011e182ce99a9dacd.tar.xz | |
[media] videodev2.h: add struct v4l2_query_ext_ctrl and VIDIOC_QUERY_EXT_CTRL
Add a new struct and ioctl to extend the amount of information you can
get for a control.
The range is now a s64 type, and array dimensions and element size can be
reported through nr_of_dims/dims/elems/elem_size.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'include/uapi/linux/videodev2.h')
| -rw-r--r-- | include/uapi/linux/videodev2.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 438c4a65c5b2..0297980fe491 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -1269,6 +1269,7 @@ struct v4l2_ext_controls { #define V4L2_CTRL_ID_MASK (0x0fffffff) #define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL) #define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000) +#define V4L2_CTRL_MAX_DIMS (4) enum v4l2_ctrl_type { V4L2_CTRL_TYPE_INTEGER = 1, @@ -1298,6 +1299,23 @@ struct v4l2_queryctrl { __u32 reserved[2]; }; +/* Used in the VIDIOC_QUERY_EXT_CTRL ioctl for querying extended controls */ +struct v4l2_query_ext_ctrl { + __u32 id; + __u32 type; + char name[32]; + __s64 minimum; + __s64 maximum; + __u64 step; + __s64 default_value; + __u32 flags; + __u32 elem_size; + __u32 elems; + __u32 nr_of_dims; + __u32 dims[V4L2_CTRL_MAX_DIMS]; + __u32 reserved[32]; +}; + /* Used in the VIDIOC_QUERYMENU ioctl for querying menu items */ struct v4l2_querymenu { __u32 id; @@ -2011,6 +2029,8 @@ struct v4l2_create_buffers { Never use these in applications! */ #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info) +#define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl) + /* Reminder: when adding new ioctls please add support for them to drivers/media/video/v4l2-compat-ioctl32.c as well! */ |