linux-kernel - Re: [Patch v7 12/12] Documention: v4l: Documentation for HEVC CIDs

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Date:   Mon, 29 Jan 2018 14:39:38 +0100
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Smitha T Murthy <smitha.t@...sung.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, kyungmin.park@...sung.com,
        kamil@...as.org, jtp.park@...sung.com, a.hajda@...sung.com,
        mchehab@...nel.org, pankaj.dubey@...sung.com, krzk@...nel.org,
        m.szyprowski@...sung.com, s.nawrocki@...sung.com
Subject: Re: [Patch v7 12/12] Documention: v4l: Documentation for HEVC CIDs

On 01/29/2018 02:15 PM, Smitha T Murthy wrote:
>>>>
>>> The values set in V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP and
>>> V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP will give the limits for the L0-L6 QP
>>> values that can be set.
>>
>> OK. If you can clarify this in the documentation, then I can Ack this.
>>
>> Note: if userspace changes MIN_QP or MAX_QP, then the driver should call
>> v4l2_ctrl_modify_range() to update the ranges of the controls that are
>> impacted by QP range changes. I'm not sure if that's done at the moment.
>>
>> Regards,
>>
>> 	Hans
>>
>>
> I can mention for all these controls range as
> [V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP, V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP].
> Will this be ok?

Yes, that sounds good.

	Hans