On 02/03/2012 12:54 AM, Sakari Ailus wrote:
> Add support for VIDIOC_SUBDEV_S_SELECTION and VIDIOC_SUBDEV_G_SELECTION
> IOCTLs. They replace functionality provided by VIDIOC_SUBDEV_S_CROP and
> VIDIOC_SUBDEV_G_CROP IOCTLs and also add new functionality (composing).
>
> VIDIOC_SUBDEV_G_CROP and VIDIOC_SUBDEV_S_CROP continue to be supported.
>
> Signed-off-by: Sakari Ailus<sakari.ai...@iki.fi>
> ---
> drivers/media/video/v4l2-subdev.c | 34 +++++++++++++++++++++---------
> include/linux/v4l2-subdev.h | 41
> +++++++++++++++++++++++++++++++++++++
> include/media/v4l2-subdev.h | 21 +++++++++++++++---
> 3 files changed, 82 insertions(+), 14 deletions(-)
>
...
> diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h
> index ed29cbb..192993a 100644
> --- a/include/linux/v4l2-subdev.h
> +++ b/include/linux/v4l2-subdev.h
> @@ -123,6 +123,43 @@ struct v4l2_subdev_frame_interval_enum {
> __u32 reserved[9];
> };
>
> +#define V4L2_SUBDEV_SEL_FLAG_SIZE_GE (1<< 0)
> +#define V4L2_SUBDEV_SEL_FLAG_SIZE_LE (1<< 1)
> +#define V4L2_SUBDEV_SEL_FLAG_KEEP_CONFIG (1<< 2)
> +
> +/* active cropping area */
> +#define V4L2_SUBDEV_SEL_TGT_CROP_ACTIVE 0
> +/* cropping bounds */
> +#define V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS 2
You've dropped the DEFAULT targets but the target numbers stayed
unchanged. How about using hex numbers ? e.g.
#define V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTIVE 0x0100
#define V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS 0x0101
?
> +/* current composing area */
> +#define V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTIVE 256
> +/* composing bounds */
> +#define V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS 258
> +
> +
> +/**
> + * struct v4l2_subdev_selection - selection info
> + *
> + * @which: either V4L2_SUBDEV_FORMAT_ACTIVE or V4L2_SUBDEV_FORMAT_TRY
> + * @pad: pad number, as reported by the media API
> + * @target: selection target, used to choose one of possible rectangles
> + * @flags: constraints flags
s/constraints/constraint ?
> + * @r: coordinates of selection window
s/selection/ the selection ?
> + * @reserved: for future use, rounds structure size to 64 bytes, set to zero
> + *
> + * Hardware may use multiple helper window to process a video stream.
s/window/windows ?
> + * The structure is used to exchange this selection areas between
> + * an application and a driver.
> + */
> +struct v4l2_subdev_selection {
> + __u32 which;
> + __u32 pad;
> + __u32 target;
> + __u32 flags;
> + struct v4l2_rect r;
> + __u32 reserved[8];
> +};
> +
--
Regards,
Sylwester
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