linux-kernel - Re: [PATCH 1/1] [media] uvcvideo: Add 10,12bit and alternate 8bit greyscale

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Date:	Sun, 29 Jul 2012 07:56:56 +0200
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Stefan Muenzel <stefanmuenzel@...glemail.com>
Cc:	Mauro Carvalho Chehab <mchehab@...radead.org>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] [media] uvcvideo: Add 10,12bit and alternate 8bit greyscale

Hi Stefan,

Thanks for the patch.

On Saturday 28 July 2012 18:49:14 Stefan Muenzel wrote:
> Some cameras support 10bit and 12bit greyscale, or use the alternate "Y8
> " FOURCC for 8bit greyscale. Add support for these.

Could you please tell me which camera(s) use those formats ?

> Tested on a 12bit camera.
> 
> Signed-off-by: Stefan Muenzel <stefanmuenzel@...glemail.com>
> ---
>  drivers/media/video/uvc/uvc_driver.c |   19 +++++++++++++++++--
>  drivers/media/video/uvc/uvcvideo.h   |    9 +++++++++
>  2 files changed, 26 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/video/uvc/uvc_driver.c
> b/drivers/media/video/uvc/uvc_driver.c index 1d13172..11db262 100644
> --- a/drivers/media/video/uvc/uvc_driver.c
> +++ b/drivers/media/video/uvc/uvc_driver.c
> @@ -95,12 +95,27 @@ static struct uvc_format_desc uvc_fmts[] = {
>  		.fcc		= V4L2_PIX_FMT_UYVY,
>  	},
>  	{
> -		.name		= "Greyscale (8-bit)",
> +		.name		= "Greyscale 8-bit (Y800)",
>  		.guid		= UVC_GUID_FORMAT_Y800,
>  		.fcc		= V4L2_PIX_FMT_GREY,
>  	},
>  	{
> -		.name		= "Greyscale (16-bit)",
> +		.name		= "Greyscale 8-bit (Y8  )",
> +		.guid		= UVC_GUID_FORMAT_Y8,
> +		.fcc		= V4L2_PIX_FMT_GREY,
> +	},
> +	{
> +		.name		= "Greyscale 10-bit (Y10 )",
> +		.guid		= UVC_GUID_FORMAT_Y10,
> +		.fcc		= V4L2_PIX_FMT_Y10,
> +	},
> +	{
> +		.name		= "Greyscale 12-bit (Y12 )",
> +		.guid		= UVC_GUID_FORMAT_Y12,
> +		.fcc		= V4L2_PIX_FMT_Y12,
> +	},
> +	{
> +		.name		= "Greyscale 16-bit (Y16 )",
>  		.guid		= UVC_GUID_FORMAT_Y16,
>  		.fcc		= V4L2_PIX_FMT_Y16,
>  	},
> diff --git a/drivers/media/video/uvc/uvcvideo.h
> b/drivers/media/video/uvc/uvcvideo.h index 7c3d082..3764040 100644
> --- a/drivers/media/video/uvc/uvcvideo.h
> +++ b/drivers/media/video/uvc/uvcvideo.h
> @@ -79,6 +79,15 @@
>  #define UVC_GUID_FORMAT_Y800 \
>  	{ 'Y',  '8',  '0',  '0', 0x00, 0x00, 0x10, 0x00, \
>  	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
> +#define UVC_GUID_FORMAT_Y8 \
> +	{ 'Y',  '8',  ' ',  ' ', 0x00, 0x00, 0x10, 0x00, \
> +	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
> +#define UVC_GUID_FORMAT_Y10 \
> +	{ 'Y',  '1',  '0',  ' ', 0x00, 0x00, 0x10, 0x00, \
> +	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
> +#define UVC_GUID_FORMAT_Y12 \
> +	{ 'Y',  '1',  '2',  ' ', 0x00, 0x00, 0x10, 0x00, \
> +	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
>  #define UVC_GUID_FORMAT_Y16 \
>  	{ 'Y',  '1',  '6',  ' ', 0x00, 0x00, 0x10, 0x00, \
>  	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}

-- 
Regards,

Laurent Pinchart

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