linux-kernel - Re: [PATCH v2 07/13] media: verisilicon: Check AV1 bitstreams bit depth

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Message-ID: <CAAEAJfBpGwa-ZDFFCep8rk4+dgLrYOFdfyrqBZP68C+jkN0qMQ@mail.gmail.com>
Date:   Wed, 4 Jan 2023 16:33:02 -0300
From:   Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:     Benjamin Gaignard <benjamin.gaignard@...labora.com>
Cc:     p.zabel@...gutronix.de, mchehab@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, heiko@...ech.de,
        daniel.almeida@...labora.com, nicolas.dufresne@...labora.co.uk,
        linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCH v2 07/13] media: verisilicon: Check AV1 bitstreams bit depth

Hi Benjamin,

Thanks for the patch.

On Tue, Jan 3, 2023 at 2:01 PM Benjamin Gaignard
<benjamin.gaignard@...labora.com> wrote:
>
> The driver supports 8 and 10 bits bitstreams, make sure to discard
> other cases.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
> ---
>  drivers/media/platform/verisilicon/hantro_drv.c | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
> index 8e93710dcfed..16539e89935c 100644
> --- a/drivers/media/platform/verisilicon/hantro_drv.c
> +++ b/drivers/media/platform/verisilicon/hantro_drv.c
> @@ -282,7 +282,13 @@ static int hantro_try_ctrl(struct v4l2_ctrl *ctrl)
>                 /* We only support profile 0 */
>                 if (dec_params->profile != 0)
>                         return -EINVAL;
> +       } else if (ctrl->id == V4L2_CID_STATELESS_AV1_SEQUENCE) {
> +               const struct v4l2_ctrl_av1_sequence *sequence = ctrl->p_new.p_av1_sequence;
> +
> +               if (sequence->bit_depth != 8 && sequence->bit_depth != 10)
> +                       return -EINVAL;
>         }
> +
>         return 0;
>  }
>
> @@ -333,7 +339,13 @@ static int hantro_av1_s_ctrl(struct v4l2_ctrl *ctrl)
>
>         switch (ctrl->id) {
>         case V4L2_CID_STATELESS_AV1_SEQUENCE:
> -               ctx->bit_depth = ctrl->p_new.p_av1_sequence->bit_depth;
> +               int bit_depth = ctrl->p_new.p_av1_sequence->bit_depth;
> +
> +               if (vb2_is_streaming(v4l2_m2m_get_src_vq(ctx->fh.m2m_ctx)))
> +                       if (ctx->bit_depth != bit_depth)
> +                               return -EINVAL;
> +

Please use the v4l2_ctrl_grab API. Can you send a separate series to address
this for the other codecs?

Thanks a lot!
Ezequiel

> +               ctx->bit_depth = bit_depth;
>                 break;
>         default:
>                 return -EINVAL;
> --
> 2.34.1
>