Hi Hans,
On Sun, Sep 21, 2014 at 04:48:24PM +0200, Hans Verkuil wrote:
> From: Hans Verkuil <hans.verk...@cisco.com>
>
> Replace reserved2 by a flags field. This is used to tell whether
> setting a new store value is applied only once or every time that
> v4l2_ctrl_apply_store() is called for that store.
>
> Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
> ---
> include/uapi/linux/videodev2.h | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 2ca44ed..fa84070 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -1282,7 +1282,7 @@ struct v4l2_control {
> struct v4l2_ext_control {
> __u32 id;
> __u32 size;
> - __u32 reserved2[1];
> + __u32 flags;
16 bits, please. The pad number (for sub-devices) would need to be added
here as well, and that's 16 bits. A flag might be needed to tell it's valid,
too.
> union {
> __s32 value;
> __s64 value64;
> @@ -1294,6 +1294,10 @@ struct v4l2_ext_control {
> };
> } __attribute__ ((packed));
>
> +/* v4l2_ext_control flags */
> +#define V4L2_EXT_CTRL_FL_IGN_STORE_AFTER_USE 0x00000001
> +#define V4L2_EXT_CTRL_FL_IGN_STORE 0x00000002
Do we need both? Aren't these mutually exclusive, and you must have either
to be meaningful in the context of a store?
> +
> struct v4l2_ext_controls {
> union {
> __u32 ctrl_class;
--
Kind regards,
Sakari Ailus
e-mail: sakari.ai...@iki.fi XMPP: sai...@retiisi.org.uk
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