linux-kernel - Re: [EXT] Re: [PATCH] media: amphion: only insert the first sequence startcode for vc1l format

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Message-ID: <2f35d8250ce133e21eb3987977a92af583e32d0d.camel@ndufresne.ca>
Date:   Fri, 08 Jul 2022 09:32:20 -0400
From:   Nicolas Dufresne <nicolas@...fresne.ca>
To:     Ming Qian <ming.qian@....com>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "hverkuil-cisco@...all.nl" <hverkuil-cisco@...all.nl>
Cc:     "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [EXT] Re: [PATCH] media: amphion: only insert the first
 sequence startcode for vc1l format

Le mercredi 06 juillet 2022 à 04:09 +0000, Ming Qian a écrit :
> > Can't you save the slow copy by using data_offset then ? I think most of the
> > confusion comes from this commit message, someone else then you should be
> > able to understand what it means.
> 
> I'll modify the commit message that remove the unrelated vp8 description.
> And unfortunately the amphion vpu only support the ring buffer mode, so
> copying is inevitable.

Great thanks, I had forgotten that Amphion was based on a ring buffer. Indeed,
this is the way to go, same applied to CODA driver.

Nicolas