linux-kernel - Re: [PATCH v4 05/24] media: h264: Use v4l2_h264

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Date:   Thu, 5 May 2022 03:42:03 +0300
From:   Dmitry Osipenko <dmitry.osipenko@...labora.com>
To:     Nicolas Dufresne <nicolas.dufresne@...labora.com>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Dmitry Osipenko <digetx@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     nicolas@...fresne.ca, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v4 05/24] media: h264: Use v4l2_h264_reference for reflist

On 4/26/22 15:57, Nicolas Dufresne wrote:
>  static int tegra_vde_wait_mbe(struct tegra_vde *vde)
> @@ -768,7 +768,7 @@ static int tegra_vde_h264_setup_frames(struct tegra_ctx *ctx,
>  	struct h264_reflists reflists;
>  	struct vb2_buffer *ref;
>  	unsigned int i;
> -	u8 *dpb_id;
> +	struct v4l2_h264_reference *dpb_id;

nit: will be nice to preserve to reverse Xmas coding style, but only if
you'll need to make v5 with more important changes

>  	int err;
>  
>  	/*
> @@ -811,14 +811,16 @@ static int tegra_vde_h264_setup_frames(struct tegra_ctx *ctx,
>  	}
>  
>  	for (i = 0; i < b.num_valid; i++) {
> -		ref = get_ref_buf(ctx, dst, dpb_id[i]);
> +		int dpb_idx = dpb_id[i].index;
>  
> -		err = tegra_vde_h264_setup_frame(ctx, h264, &b, ref, dpb_id[i],
> +		ref = get_ref_buf(ctx, dst, dpb_idx);
> +
> +		err = tegra_vde_h264_setup_frame(ctx, h264, &b, ref, dpb_idx,
>  						 h264->dpb_frames_nb++);
>  		if (err)
>  			return err;
>  
> -		if (b.refs[dpb_id[i]].pic_order_count < b.cur_pic_order_count)
> +		if (b.refs[dpb_idx].top_field_order_cnt < b.cur_pic_order_count)
>  			h264->dpb_ref_frames_with_earlier_poc_nb++;

Tested-by: Dmitry Osipenko <dmitry.osipenko@...labora.com>