[PATCH 1/2] [media] v4l2: Add settings for Horizontal and Vertical MV Search Range

[Prabhakar Lad]

On Tue, Feb 4, 2014 at 3:29 PM, Amit Grover <amit.grover at samsung.com> wrote:
> Adding V4L2 controls for horizontal and vertical search range in pixels
> for motion estimation module in video encoder.
>
> Signed-off-by: Swami Nathan <swaminath.p at samsung.com>
> Signed-off-by: Amit Grover <amit.grover at samsung.com>

Acked-by: Lad, Prabhakar <prabhakar.csengg at gmail.com>

Regards,
--Prabhakar Lad

> ---
>  Documentation/DocBook/media/v4l/controls.xml |   20 ++++++++++++++++++++
>  drivers/media/v4l2-core/v4l2-ctrls.c         |    6 ++++++
>  include/uapi/linux/v4l2-controls.h           |    2 ++
>  3 files changed, 28 insertions(+)
>
> diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml
> index a5a3188..0e1770c 100644
> --- a/Documentation/DocBook/media/v4l/controls.xml
> +++ b/Documentation/DocBook/media/v4l/controls.xml
> @@ -2258,6 +2258,26 @@ Applicable to the MPEG1, MPEG2, MPEG4 encoders.</entry>
>  VBV buffer control.</entry>
>               </row>
>
> +                 <row><entry></entry></row>
> +             <row id=""v4l2-mpeg-video-hor-search-range">
> +               <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE</constant> </entry>
> +               <entry>integer</entry>
> +             </row>
> +               <row><entry spanname="descr">Horizontal search range defines maximum horizontal search area in pixels
> +to search and match for the present Macroblock (MB) in the reference picture. This V4L2 control macro is used to set
> +horizontal search range for motion estimation module in video encoder.</entry>
> +             </row>
> +
> +                <row><entry></entry></row>
> +             <row id="v4l2-mpeg-video-vert-search-range">
> +               <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE</constant> </entry>
> +               <entry>integer</entry>
> +             </row>
> +               <row><entry spanname="descr">Vertical search range defines maximum vertical search area in pixels
> +to search and match for the present Macroblock (MB) in the reference picture. This V4L2 control macro is used to set
> +vertical search range for motion estimation module in video encoder.</entry>
> +             </row>
> +
>               <row><entry></entry></row>
>               <row>
>                 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE</constant> </entry>
> diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
> index 6ff002b..e9e12c4 100644
> --- a/drivers/media/v4l2-core/v4l2-ctrls.c
> +++ b/drivers/media/v4l2-core/v4l2-ctrls.c
> @@ -735,6 +735,8 @@ const char *v4l2_ctrl_get_name(u32 id)
>         case V4L2_CID_MPEG_VIDEO_DEC_PTS:                       return "Video Decoder PTS";
>         case V4L2_CID_MPEG_VIDEO_DEC_FRAME:                     return "Video Decoder Frame Count";
>         case V4L2_CID_MPEG_VIDEO_VBV_DELAY:                     return "Initial Delay for VBV Control";
> +       case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE:             return "Horizontal MV Search Range";
> +       case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE:             return "Vertical MV Search Range";
>         case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER:             return "Repeat Sequence Header";
>
>         /* VPX controls */
> @@ -910,6 +912,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
>                 *min = 0;
>                 *max = *step = 1;
>                 break;
> +       case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE:
> +       case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE:
> +               *type = V4L2_CTRL_TYPE_INTEGER;
> +               break;
>         case V4L2_CID_PAN_RESET:
>         case V4L2_CID_TILT_RESET:
>         case V4L2_CID_FLASH_STROBE:
> diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
> index 2cbe605..cda6fa0 100644
> --- a/include/uapi/linux/v4l2-controls.h
> +++ b/include/uapi/linux/v4l2-controls.h
> @@ -376,6 +376,8 @@ enum v4l2_mpeg_video_multi_slice_mode {
>  #define V4L2_CID_MPEG_VIDEO_DEC_FRAME                  (V4L2_CID_MPEG_BASE+224)
>  #define V4L2_CID_MPEG_VIDEO_VBV_DELAY                  (V4L2_CID_MPEG_BASE+225)
>  #define V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER          (V4L2_CID_MPEG_BASE+226)
> +#define V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE          (V4L2_CID_MPEG_BASE+227)
> +#define V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE          (V4L2_CID_MPEG_BASE+228)
>
>  #define V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP            (V4L2_CID_MPEG_BASE+300)
>  #define V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP            (V4L2_CID_MPEG_BASE+301)
> --
> 1.7.9.5
>