linux-kernel - Re: [PATCH 1/3] media: uapi: h264: clarify expected scaling_list

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Date:   Tue, 29 Oct 2019 12:22:05 +0100
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Jonas Karlman <jonas@...boo.se>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Maxime Ripard <mripard@...nel.org>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Cc:     Hans Verkuil <hverkuil@...all.nl>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Alexandre Courbot <acourbot@...omium.org>,
        Nicolas Dufresne <nicolas@...fresne.ca>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] media: uapi: h264: clarify expected
 scaling_list_4x4/8x8 order

On Tue, 2019-10-29 at 00:00 +0000, Jonas Karlman wrote:
> Clarify that the expected order of scaling lists should follow the order
> they are listed in the H264 standard.
> 
> The expected scaling list order,
> for 4x4: Intra Y, Intra Cb, Intra Cr, Inter Y, Inter Cb, Inter Cr,
> for 8x8: Intra Y, Inter Y, Intra Cb, Inter Cb, Intra Cr, Inter Cr.
> 
> Also clarify that the values in a scaling list should be in matrix order,
> the same value order that vaapi, vdpau and nvdec use.
> 
> Signed-off-by: Jonas Karlman <jonas@...boo.se>

Reviewed-by: Philipp Zabel <p.zabel@...gutronix.de>

regards
Philipp