linux-kernel - 回复: 回复: [v1] staging: media: starfive: Renamed capture_raw to capture

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Message-ID:
 <SHXPR01MB0671467C1D3FF93B58B0C8F2F232A@SHXPR01MB0671.CHNPR01.prod.partner.outlook.cn>
Date: Thu, 21 Mar 2024 13:17:03 +0000
From: Changhuang Liang <changhuang.liang@...rfivetech.com>
To: Hans Verkuil <hverkuil-cisco@...all.nl>, Mauro Carvalho Chehab
	<mchehab@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC: Laurent Pinchart <laurent.pinchart@...asonboard.com>, Jack Zhu
	<jack.zhu@...rfivetech.com>, "linux-media@...r.kernel.org"
	<linux-media@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-staging@...ts.linux.dev"
	<linux-staging@...ts.linux.dev>
Subject:
 回复: 回复: [v1] staging: media: starfive: Renamed capture_raw to capture_dump

> On 21/03/2024 1:17 pm, Changhuang Liang wrote:
> > Hi, Hans
> >
> > Thanks for your comments.
> >
> >> On 01/03/2024 8:00 am, Changhuang Liang wrote:
> >>> The pixel formats captured by the capture_raw video device depends
> >>> on what pixel formats come from the source device. It is actually
> >>> dump the source device data. So renamed it to capture_dump.
> >>
> >> I don't think 'dump' is a great name. I think what you really want to
> >> say is 'unprocessed'. And usually that is indeed called 'raw capture'.
> >>
> >
> > StarFive JH7110 SoC also supports the output of the raw format data from
> ISP port, see:
> >
> > https://lore.kernel.org/all/20240306093334.9321-1-changhuang.liang@sta
> > rfivetech.com/
> >
> > So I think it is better to call the ISP output port "capture_raw".
> 
> If it is processed by the ISP, how can it be 'raw'? Or do you mean that this uses
> Bayer pixelformat?
> 
> The normal convention AFAIK is that the term 'raw capture' generally means
> that the sensor bayer data is captured without being processed (or only
> minimal processing).
> 
> Looking at:
> 
> https://lore.kernel.org/all/20240306093334.9321-6-changhuang.liang@starfi
> vetech.com/
> 
> I think you indeed mean that you can get the processed ISP data in bayer
> format through a separate video device. So I would call that port
> 'capture_bayer' and keep the 'capture_raw' name for the port from the CSI
> receiver.
> 

OK, will use this way.

Regards,
Changhuang