Messages in this thread Patch in this message | | | From | Ricardo Ribalda Delgado <> | Subject | [PATCH v2 02/10] videodev2.h: Extend struct v4l2_ext_controls | Date | Fri, 21 Aug 2015 15:19:21 +0200 |
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So it can be used to get the default value of a control.
Without this change it is not possible to get get the default value of array controls.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> --- include/uapi/linux/videodev2.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 72fa3e490e30..2e857b19a155 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -1461,7 +1461,10 @@ struct v4l2_ext_control { } __attribute__ ((packed)); struct v4l2_ext_controls { - __u32 ctrl_class; + union { + __u32 ctrl_class; + __u32 which; + }; __u32 count; __u32 error_idx; __u32 reserved[2]; @@ -1472,6 +1475,8 @@ struct v4l2_ext_controls { #define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL) #define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000) #define V4L2_CTRL_MAX_DIMS (4) +#define V4L2_CTRL_WHICH_CUR_VAL 0 +#define V4L2_CTRL_WHICH_DEF_VAL 0x0f000000 enum v4l2_ctrl_type { V4L2_CTRL_TYPE_INTEGER = 1, -- 2.5.0
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