linux-kernel - Re: [PATCH v10 0/5] Enable support for AV1 stateful decoder

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Message-ID: <ae5531fa-a3a4-4fc5-8580-3a790bec4961@packett.cool>
Date: Fri, 2 Jan 2026 07:43:02 -0300
From: Val Packett <val@...kett.cool>
To: Deepa Guthyappa Madivalara <deepa.madivalara@....qualcomm.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Vikash Garodia <vikash.garodia@....qualcomm.com>,
 Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>,
 Abhinav Kumar <abhinav.kumar@...ux.dev>, Bryan O'Donoghue <bod@...nel.org>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-msm@...r.kernel.org, kernel test robot <lkp@...el.com>,
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
 Nicolas Dufresne <nicolas.dufresne@...labora.com>,
 Hans Verkuil <hverkuil+cisco@...nel.org>
Subject: Re: [PATCH v10 0/5] Enable support for AV1 stateful decoder


On 12/10/25 3:59 PM, Deepa Guthyappa Madivalara wrote:
> Hi all,
>
> This patch series adds initial support for the AV1 stateful decoder
> codecs in iris decoder. Also it adds support for AV1 stateful decoder
> in V4l2. The objective of this work is to extend the Iris decoder's
> capabilities to handle AV1 format codec streams, including necessary
> format handling and buffer management.

This is awesome, thanks!

I've tested it with rpi-ffmpeg as well, and it works great (only 
required one interesting logic change.. 
https://github.com/jc-kynesim/rpi-ffmpeg/pull/108) \o/

> unsupported content with bitdepth 10 (66 tests)
> Iris decoder supports only 8bit NV12

Any chance we could get 10-bit support soon as well?

10-bit is massively popular with AV1, especially with home encodes (see 
e.g. https://wiki.x266.mov/docs/encoders/SVT-AV1#encoder-optimization 
and the ab-av1 tool's defaults)


Thanks,
~val