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Message-ID: <fc225f62a8ec396eddb335a7d906d274802be3fc.camel@ndufresne.ca>
Subject: Re: [PATCH v3 0/2] [v3]Add hantro g1 video decoder support for
 RK3588
From: Nicolas Dufresne <nicolas@ndufresne.ca>
To: Piotr Oniszczuk <piotr.oniszczuk@gmail.com>, liujianfeng1994@gmail.com
Cc: conor+dt@kernel.org, devicetree@vger.kernel.org, elezegarcia@gmail.com, 
 Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>, Heiko
 =?ISO-8859-1?Q?St=FCbner?= <heiko@sntech.de>,  knaerzche@gmail.com,
 krzysztof.kozlowski+dt@linaro.org,  linux-arm-kernel@lists.infradead.org,
 linux-kernel@vger.kernel.org,  linux-media@vger.kernel.org, "open
 list:ARM/Rockchip SoC..." <linux-rockchip@lists.infradead.org>,
 mchehab@kernel.org, Philipp Zabel <p.zabel@pengutronix.de>, Rob Herring
 <robh+dt@kernel.org>,  sfr@canb.auug.org.au
Date: Thu, 18 Jan 2024 16:51:15 -0500
In-Reply-To: <2CFF2A39-6416-4599-AD32-E99EF95F5A36@gmail.com>
References: <5490507acc121113e52a8cdddb155fddf6dbb374.camel@ndufresne.ca>
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Le jeudi 18 janvier 2024 =C3=A0 14:53 +0100, Piotr Oniszczuk a =C3=A9crit=
=C2=A0:
> > Wiadomo=C5=9B=C4=87 napisana przez amazingfate <liujianfeng1994@gmail.c=
om> w dniu 18.01.2024, o godz. 12:30:
> >=20
> > Before rkvdec2 launching mainline
>=20
> Ooooo - is there concrete plan for this?
>=20
> Asking as imho rk35xx can be really nice multimedia soc.
>=20
> Can be=E2=80=A6. but is not due current lack of hevc/vp9 hw decode in mai=
nline due lack of rkvdec2 support
> This seems to be clear blocker for many multimedia use cases :-(
>=20
> Having rkvdec2 support via v4l2_request in mainline imho will make rk35xx=
 killer soc for multimedia=E2=80=A6.
>=20
> ps: rkvdec support seems available since years on mainline and works well=
.
> So maybe rkvdec code base can be basis to gradually added support for rkv=
dec2?
> =C2=A0=C2=A0

You'd be surprised that we are still upstreaming HEVC/10bit and 4:2:2 suppo=
rt
(well Jonas is) and are missing a proper solution to some needed HW reset l=
ogic
(to fix concurrent decoding). Though all these exist in some form in LibreE=
LEC
patchset.

When this is behind, Jonas reported that he might be interested in looking =
into
rkvdec2. Consider that his is volunteer work, but it would indeed be amazin=
g.
The HW work blob free (no firmware needed) supports up to 8K (rk3588).  Som=
e
early work on adding encoder interface for this type of HW is also in progr=
ess.
The AV1 decoder for rk3588 (which is a chip from Verisillicon, not RK) is
already upstream.

regards,
Nicolas