linux-kernel - Re: [PATCH v2 12/12] media: rkvdec: h264: Support profile and level controls

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Date:   Wed, 08 Jul 2020 00:19:05 -0300
From:   Ezequiel Garcia <ezequiel@...labora.com>
To:     Jonas Karlman <jonas@...boo.se>, linux-media@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Hans Verkuil <hans.verkuil@...co.com>,
        Nicolas Dufresne <nicolas.dufresne@...labora.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Alexandre Courbot <acourbot@...omium.org>
Subject: Re: [PATCH v2 12/12] media: rkvdec: h264: Support profile and level
 controls

On Mon, 2020-07-06 at 21:54 +0000, Jonas Karlman wrote:
> The Rockchip Video Decoder used in RK3399 supports H.264 profiles from
> Baseline to High 4:2:2 up to Level 5.1, except for the Extended profile.
> 
> Expose the V4L2_CID_MPEG_VIDEO_H264_PROFILE and the
> V4L2_CID_MPEG_VIDEO_H264_LEVEL control, so that userspace can query the
> driver for the list of supported profiles and level.
> 
> Signed-off-by: Jonas Karlman <jonas@...boo.se>
> Reviewed-by: Ezequiel Garcia <ezequiel@...labora.com>
> ---
> Changes in v2:
> - Moved to end
> - Collect r-b tag
> ---
>  drivers/staging/media/rkvdec/rkvdec.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/drivers/staging/media/rkvdec/rkvdec.c b/drivers/staging/media/rkvdec/rkvdec.c
> index 4faee9262392..b21031535330 100644
> --- a/drivers/staging/media/rkvdec/rkvdec.c
> +++ b/drivers/staging/media/rkvdec/rkvdec.c
> @@ -144,6 +144,19 @@ static const struct rkvdec_ctrl_desc rkvdec_h264_ctrl_descs[] = {
>  		.cfg.def = V4L2_MPEG_VIDEO_H264_START_CODE_ANNEX_B,
>  		.cfg.max = V4L2_MPEG_VIDEO_H264_START_CODE_ANNEX_B,
>  	},
> +	{
> +		.cfg.id = V4L2_CID_MPEG_VIDEO_H264_PROFILE,
> +		.cfg.min = V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE,

Nicolas recently pointed out to me that our drivers
can't support ASO/FMO baseline features, and so
seems we need to leave baseline out.

(Applies to Hantro as well).

Thanks,
Ezequiel

> +		.cfg.max = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_422,
> +		.cfg.menu_skip_mask =
> +			BIT(V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED),
> +		.cfg.def = V4L2_MPEG_VIDEO_H264_PROFILE_MAIN,
> +	},
> +	{
> +		.cfg.id = V4L2_CID_MPEG_VIDEO_H264_LEVEL,
> +		.cfg.min = V4L2_MPEG_VIDEO_H264_LEVEL_1_0,
> +		.cfg.max = V4L2_MPEG_VIDEO_H264_LEVEL_5_1,
> +	},
>  };
>  
>  static const struct rkvdec_ctrls rkvdec_h264_ctrls = {