linux-kernel - Re: [PATCH v3 0/8] Additional features for Hantro HEVC

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Date:   Tue, 22 Jun 2021 09:54:35 -0300
From:   Ezequiel Garcia <ezequiel@...labora.com>
To:     Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        hverkuil@...all.nl, p.zabel@...gutronix.de, mchehab@...nel.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
        gregkh@...uxfoundation.org, mripard@...nel.org,
        paul.kocialkowski@...tlin.com, wens@...e.org,
        jernej.skrabec@...l.net, emil.l.velikov@...il.com,
        andrzej.p@...labora.com, jc@...esim.co.uk,
        jernej.skrabec@...il.com, nicolas@...fresne.ca
Cc:     kernel@...gutronix.de, linux-imx@....com,
        linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/8] Additional features for Hantro HEVC

Hi Benjamin,

On Fri, 2021-06-18 at 15:15 +0200, Benjamin Gaignard wrote:
> version 3:
>  - Change trace file name to hantro_trace.h
> 
> version 2:
>  - Fix structure name in ext-ctrls-codec.rst
>  - Define the value for compression storage size
>  - Add comments about registers usage
>  - Add documentation about P010 padding
> 
> Basic HEVC support has been added to Hantro driver in this pull request:
> https://www.spinics.net/lists/linux-media/msg193744.html
> 
> Thanks to that it is now possible to support more features for this driver.
> 
> The first patch allow to log the hardware performance per macroblock.
> The second patch makes the driver use compressed reference frames to
> reduce memory bandwidth consumption.
> Patches 3 to 5 allow to decode and produce 10-bits P010 frames.
> Patch 6 make usage of G2 post processor to scale down the frames.
> Patches 7 and 8 add the support of HEVC scaling matrix by adding a new
> control.
> 

For the next cover letter, please make sure you provide
some notes about how this was tested, with a gstreamer
public branch if needed; and also fluendo's fluster conformance
results before/after this patchset.

While there, make sure you check for performance regressions/improvements
and add such information to the commit descriptions. The more the merrier.

Thanks a lot,
Ezequiel