Re: [PATCH 1/2] solo6x10: expose encoder quantization setting as V4L2 control

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On Tue,  8 Jul 2014 18:23:32 +0300
Andrey Utkin <andrey.utkin@xxxxxxxxxxxxxxxxxxx> wrote:
> solo6*10 boards have configurable quantization parameter which takes
> values from 0 to 31, inclusively.
> 
> This change enables setting it with ioctl VIDIOC_S_CTRL with id
> V4L2_CID_MPEG_VIDEO_H264_MIN_QP.
> 
> Signed-off-by: Andrey Utkin <andrey.utkin@xxxxxxxxxxxxxxxxxxx>
> ---
>  drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c
> b/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c index
> b8ff113..bf6eb06 100644 ---
> a/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c +++
> b/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c @@ -1111,6
> +1111,9 @@ static int solo_s_ctrl(struct v4l2_ctrl *ctrl) case
> V4L2_CID_MPEG_VIDEO_GOP_SIZE: solo_enc->gop = ctrl->val;
>  		return 0;
> +	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
> +		solo_enc->qp = ctrl->val;
> +		return 0;
>  	case V4L2_CID_MOTION_THRESHOLD:
>  		solo_enc->motion_thresh = ctrl->val;
>  		if (!solo_enc->motion_global
> || !solo_enc->motion_enabled) @@ -1260,6 +1263,8 @@ static struct
> solo_enc_dev *solo_enc_alloc(struct solo_dev *solo_dev,
> V4L2_CID_SHARPNESS, 0, 15, 1, 0); v4l2_ctrl_new_std(hdl,
> &solo_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 255, 1,
> solo_dev->fps);
> +	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
> +			V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 31, 1,
> SOLO_DEFAULT_QP); v4l2_ctrl_new_custom(hdl,
> &solo_motion_threshold_ctrl, NULL); v4l2_ctrl_new_custom(hdl,
> &solo_motion_enable_ctrl, NULL); v4l2_ctrl_new_custom(hdl,
> &solo_osd_text_ctrl, NULL);

Signed-off-by: Ismael Luceno <ismael.luceno@xxxxxxxxxxxxxxxxxxx>

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