From mboxrd@z Thu Jan  1 00:00:00 1970
Return-path: <linux-media-owner@vger.kernel.org>
Received: from lb3-smtp-cloud2.xs4all.net ([194.109.24.29]:48586 "EHLO
	lb3-smtp-cloud2.xs4all.net" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1754527AbcFTRFo (ORCPT
	<rfc822;linux-media@vger.kernel.org>);
	Mon, 20 Jun 2016 13:05:44 -0400
Subject: Re: [PATCH v2 1/7] v4l: Correct the ordering of LSBs of the 10-bit
 raw packed formats
To: Sakari Ailus <sakari.ailus@linux.intel.com>,
	linux-media@vger.kernel.org
References: <1466439608-22890-1-git-send-email-sakari.ailus@linux.intel.com>
 <1466439608-22890-2-git-send-email-sakari.ailus@linux.intel.com>
From: Hans Verkuil <hverkuil@xs4all.nl>
Message-ID: <576821D9.5090303@xs4all.nl>
Date: Mon, 20 Jun 2016 19:03:21 +0200
MIME-Version: 1.0
In-Reply-To: <1466439608-22890-2-git-send-email-sakari.ailus@linux.intel.com>
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 7bit
Sender: linux-media-owner@vger.kernel.org
List-ID: <linux-media.vger.kernel.org>

On 06/20/2016 06:20 PM, Sakari Ailus wrote:
> The 10-bit packed raw bayer format documented that the data of the first
> pixel of a four-pixel group was found in the first byte and the two
> highest bits of the fifth byte. This was not entirely correct. The two
> bits in the fifth byte are the two lowest bits. The second pixel occupies
> the second byte and third and fourth least significant bits and so on.
> 
> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>

As mentioned, this needs confirmation. I wonder, isn't this specified in the UVC
spec?

Regards,

	Hans

> ---
>  .../DocBook/media/v4l/pixfmt-srggb10p.xml          | 32 +++++++++++-----------
>  1 file changed, 16 insertions(+), 16 deletions(-)
> 
> diff --git a/Documentation/DocBook/media/v4l/pixfmt-srggb10p.xml b/Documentation/DocBook/media/v4l/pixfmt-srggb10p.xml
> index a8cc102..747822b 100644
> --- a/Documentation/DocBook/media/v4l/pixfmt-srggb10p.xml
> +++ b/Documentation/DocBook/media/v4l/pixfmt-srggb10p.xml
> @@ -47,10 +47,10 @@
>  		  <entry>G<subscript>01high</subscript></entry>
>  		  <entry>B<subscript>02high</subscript></entry>
>  		  <entry>G<subscript>03high</subscript></entry>
> -		  <entry>B<subscript>00low</subscript>(bits 7--6)
> -			 G<subscript>01low</subscript>(bits 5--4)
> -			 B<subscript>02low</subscript>(bits 3--2)
> -			 G<subscript>03low</subscript>(bits 1--0)
> +		  <entry>G<subscript>03low</subscript>(bits 7--6)
> +			 B<subscript>02low</subscript>(bits 5--4)
> +			 G<subscript>01low</subscript>(bits 3--2)
> +			 B<subscript>00low</subscript>(bits 1--0)
>  		  </entry>
>  		</row>
>  		<row>
> @@ -59,10 +59,10 @@
>  		  <entry>R<subscript>11high</subscript></entry>
>  		  <entry>G<subscript>12high</subscript></entry>
>  		  <entry>R<subscript>13high</subscript></entry>
> -		  <entry>G<subscript>10low</subscript>(bits 7--6)
> -			 R<subscript>11low</subscript>(bits 5--4)
> -			 G<subscript>12low</subscript>(bits 3--2)
> -			 R<subscript>13low</subscript>(bits 1--0)
> +		  <entry>R<subscript>13low</subscript>(bits 7--6)
> +			 G<subscript>12low</subscript>(bits 5--4)
> +			 R<subscript>11low</subscript>(bits 3--2)
> +			 G<subscript>10low</subscript>(bits 1--0)
>  		  </entry>
>  		</row>
>  		<row>
> @@ -71,10 +71,10 @@
>  		  <entry>G<subscript>21high</subscript></entry>
>  		  <entry>B<subscript>22high</subscript></entry>
>  		  <entry>G<subscript>23high</subscript></entry>
> -		  <entry>B<subscript>20low</subscript>(bits 7--6)
> -			 G<subscript>21low</subscript>(bits 5--4)
> -			 B<subscript>22low</subscript>(bits 3--2)
> -			 G<subscript>23low</subscript>(bits 1--0)
> +		  <entry>G<subscript>23low</subscript>(bits 7--6)
> +			 B<subscript>22low</subscript>(bits 5--4)
> +			 G<subscript>21low</subscript>(bits 3--2)
> +			 B<subscript>20low</subscript>(bits 1--0)
>  		  </entry>
>  		</row>
>  		<row>
> @@ -83,10 +83,10 @@
>  		  <entry>R<subscript>31high</subscript></entry>
>  		  <entry>G<subscript>32high</subscript></entry>
>  		  <entry>R<subscript>33high</subscript></entry>
> -		  <entry>G<subscript>30low</subscript>(bits 7--6)
> -			 R<subscript>31low</subscript>(bits 5--4)
> -			 G<subscript>32low</subscript>(bits 3--2)
> -			 R<subscript>33low</subscript>(bits 1--0)
> +		  <entry>R<subscript>33low</subscript>(bits 7--6)
> +			 G<subscript>32low</subscript>(bits 5--4)
> +			 R<subscript>31low</subscript>(bits 3--2)
> +			 G<subscript>30low</subscript>(bits 1--0)
>  		  </entry>
>  		</row>
>  	      </tbody>
>