linux-kernel - Re: [RESEND][PATCH 1/2] v4l2: modify the webcam video standard handling

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Message-ID: <42d1ca6a2d2f29851cc1ea228bbc7121.squirrel@webmail.xs4all.nl>
Date:	Mon, 31 Aug 2009 16:44:20 +0200
From:	"Hans Verkuil" <hverkuil@...all.nl>
To:	"Mauro Carvalho Chehab" <mchehab@...radead.org>
Cc:	"Laurent Pinchart" <laurent.pinchart@...asonboard.com>,
	Németh Márton <nm127@...email.hu>,
	"Jean-Francois Moine" <moinejf@...e.fr>,
	"Thomas Kaiser" <thomas@...ser-linux.li>,
	linux-media@...r.kernel.org, "LKML" <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND][PATCH 1/2] v4l2: modify the webcam video standard  
 handling


> Em Mon, 31 Aug 2009 09:33:23 +0200
> "Hans Verkuil" <hverkuil@...all.nl> escreveu:
>
>> > TV standards only apply to analog video. Let's simply not use it for
>> > digital
>> > video. We don't expect drivers to implement VIDIOC_[GS]_JPEGCOMP with
>> fake
>> > values when they don't support JPEG compression, so we should not
>> expect
>> > them
>> > to implement VIDIOC_[GS]_STD when they don't support analog TV.
>>
>> Exactly. Work is underway to add an API for HDTV and similar digital
>> video
>> formats. But we should just freeze the v4l2_std_id API and only use it
>> for
>> the analog PAL/NTSC/SECAM type formats. This nicely corresponds with the
>> underlying standards as those have been frozen as well.
>
> Could you please point the thread where this API is being discussed

Sure, here is the thread:

http://osdir.com/ml/linux-media/2009-08/msg00452.html

It's currently just brainstorming and not an official RFC.

Regards,

         Hans

-- 
Hans Verkuil - video4linux developer - sponsored by TANDBERG

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