Request for new pixel format (JPEG2000)

Request for new pixel format (JPEG2000)

[Vladimir Davydov]

Hi,
Is it possible to add new pixel format to videodev2.h file?

#define V4L2_PIX_FMT_MJ2C   v4l2_fourcc('M','J','2','C') /* Morgan JPEG 2000*/

I have developed a V4L2 driver for the board with hardware JPEG2000 codec 
(ADV202 chip). This driver uses that pixel format.
I think JPEG 2000 is very perspective codec and it will be good if V4L2 will 
support it.

Short description of the device is here:
http://www.promwad.com/markets/linux-video-jpeg2000-blackfin.html

Thanks,
Vladimir.


-- 
Vladimir Davydov
Senior Developer
Promwad Innovation Company
Web: www.promwad.com
22, Olshevskogo St.,
220073, Minsk,
BELARUS
Phone/Fax: +375 (17) 312–1246
E-mail: vladimir.davydov@promwad.com
Skype: v_davydov

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Re: Request for new pixel format (JPEG2000)

[Alexey Klimov]

(added linux-media mail-list)

Hello, Vladimir

On Wed, 2009-01-21 at 21:46 +0200, Vladimir Davydov wrote:
> Hi,
> Is it possible to add new pixel format to videodev2.h file?
> 
> #define V4L2_PIX_FMT_MJ2C   v4l2_fourcc('M','J','2','C') /* Morgan JPEG 2000*/
> 
> I have developed a V4L2 driver for the board with hardware JPEG2000 codec 
> (ADV202 chip). This driver uses that pixel format.
> I think JPEG 2000 is very perspective codec and it will be good if V4L2 will 
> support it.
> 
> Short description of the device is here:
> http://www.promwad.com/markets/linux-video-jpeg2000-blackfin.html
> 
> Thanks,
> Vladimir.

Please, send patches and other e-mails related to drivers development to
linux-media@vger.kernel.org
Such tool like patchwork.kernel.org will cares about patches, so they
don't lost. 

I think you already check this page
http://linuxtv.org/wiki/index.php/Development:_How_to_submit_patches
if not, please check.

-- 
Best regards, Klimov Alexey

Re: Request for new pixel format (JPEG2000)

[Hans Verkuil]

On Thursday 22 January 2009 06:09:02 Alexey Klimov wrote:
> (added linux-media mail-list)
>
> Hello, Vladimir
>
> On Wed, 2009-01-21 at 21:46 +0200, Vladimir Davydov wrote:
> > Hi,
> > Is it possible to add new pixel format to videodev2.h file?
> >
> > #define V4L2_PIX_FMT_MJ2C   v4l2_fourcc('M','J','2','C') /* Morgan JPEG
> > 2000*/
> >
> > I have developed a V4L2 driver for the board with hardware JPEG2000
> > codec (ADV202 chip). This driver uses that pixel format.
> > I think JPEG 2000 is very perspective codec and it will be good if V4L2
> > will support it.
> >
> > Short description of the device is here:
> > http://www.promwad.com/markets/linux-video-jpeg2000-blackfin.html

Vladimir,

It shouldn't be a problem adding this, but we prefer to only add such things 
when the driver code is also added at the same time. Are you going to 
submit the driver code as well to the list?

Thanks,

	Hans

> >
> > Thanks,
> > Vladimir.
>
> Please, send patches and other e-mails related to drivers development to
> linux-media@vger.kernel.org
> Such tool like patchwork.kernel.org will cares about patches, so they
> don't lost.
>
> I think you already check this page
> http://linuxtv.org/wiki/index.php/Development:_How_to_submit_patches
> if not, please check.



-- 
Hans Verkuil - video4linux developer - sponsored by TANDBERG

Re: Request for new pixel format (JPEG2000)

[Vladimir Davydov]

On Thursday 22 January 2009 09:19:54 Hans Verkuil wrote:
> On Thursday 22 January 2009 06:09:02 Alexey Klimov wrote:
> > (added linux-media mail-list)
> >
> > Hello, Vladimir
> >
> > On Wed, 2009-01-21 at 21:46 +0200, Vladimir Davydov wrote:
> > > Hi,
> > > Is it possible to add new pixel format to videodev2.h file?
> > >
> > > #define V4L2_PIX_FMT_MJ2C   v4l2_fourcc('M','J','2','C') /* Morgan JPEG
> > > 2000*/
> > >
> > > I have developed a V4L2 driver for the board with hardware JPEG2000
> > > codec (ADV202 chip). This driver uses that pixel format.
> > > I think JPEG 2000 is very perspective codec and it will be good if V4L2
> > > will support it.
> > >
> > > Short description of the device is here:
> > > http://www.promwad.com/markets/linux-video-jpeg2000-blackfin.html
>
> Vladimir,
>
> It shouldn't be a problem adding this, but we prefer to only add such
> things when the driver code is also added at the same time. Are you going
> to submit the driver code as well to the list?
>
> Thanks,
>
> 	Hans

Hans, 
I can sibmit the driver code. But this driver is only for the blackfin 
processor and will not work on other platforms. Does it make sense to include 
the driver to the kernel source? 
Maybe it will be better to include this driver to the blackfin.uclinux kernel 
tree. How do you think?


With best regards,
Vladimir

>
> > > Thanks,
> > > Vladimir.
> >
> > Please, send patches and other e-mails related to drivers development to
> > linux-media@vger.kernel.org
> > Such tool like patchwork.kernel.org will cares about patches, so they
> > don't lost.
> >
> > I think you already check this page
> > http://linuxtv.org/wiki/index.php/Development:_How_to_submit_patches
> > if not, please check.



-- 
Vladimir Davydov
Senior Developer
Promwad Innovation Company
Web: www.promwad.com
22, Olshevskogo St.,
220073, Minsk,
BELARUS
Phone/Fax: +375 (17) 312–1246
E-mail: vladimir.davydov@promwad.com
Skype: v_davydov

Re: Request for new pixel format (JPEG2000)

[Mauro Carvalho Chehab]

On Thu, 22 Jan 2009 12:03:48 +0200
Vladimir Davydov <vladimir.davydov@promwad.com> wrote:

> On Thursday 22 January 2009 09:19:54 Hans Verkuil wrote:
> > On Thursday 22 January 2009 06:09:02 Alexey Klimov wrote:
> > > (added linux-media mail-list)
> > >
> > > Hello, Vladimir
> > >
> > > On Wed, 2009-01-21 at 21:46 +0200, Vladimir Davydov wrote:
> > > > Hi,
> > > > Is it possible to add new pixel format to videodev2.h file?
> > > >
> > > > #define V4L2_PIX_FMT_MJ2C   v4l2_fourcc('M','J','2','C') /* Morgan JPEG
> > > > 2000*/
> > > >
> > > > I have developed a V4L2 driver for the board with hardware JPEG2000
> > > > codec (ADV202 chip). This driver uses that pixel format.
> > > > I think JPEG 2000 is very perspective codec and it will be good if V4L2
> > > > will support it.
> > > >
> > > > Short description of the device is here:
> > > > http://www.promwad.com/markets/linux-video-jpeg2000-blackfin.html
> >
> > Vladimir,
> >
> > It shouldn't be a problem adding this, but we prefer to only add such
> > things when the driver code is also added at the same time. Are you going
> > to submit the driver code as well to the list?
> >
> > Thanks,
> >
> > 	Hans
> 
> Hans, 
> I can sibmit the driver code. But this driver is only for the blackfin 
> processor and will not work on other platforms. Does it make sense to include 
> the driver to the kernel source? 
> Maybe it will be better to include this driver to the blackfin.uclinux kernel 
> tree. How do you think?

Please submit the driver to linux-media. The proper place for those drivers are
under drivers/media. We have also other drivers there that are architecture
specific (like omap drivers, OLPC, etc).

Cheers,
Mauro.

Re: Request for new pixel format (JPEG2000)

[Vladimir Davydov]

On Thursday 22 January 2009 21:37:00 Mauro Carvalho Chehab wrote:
> On Thu, 22 Jan 2009 12:03:48 +0200
>
> Vladimir Davydov <vladimir.davydov@promwad.com> wrote:
> > On Thursday 22 January 2009 09:19:54 Hans Verkuil wrote:
> > > On Thursday 22 January 2009 06:09:02 Alexey Klimov wrote:
> > > > (added linux-media mail-list)
> > > >
> > > > Hello, Vladimir
> > > >
> > > > On Wed, 2009-01-21 at 21:46 +0200, Vladimir Davydov wrote:
> > > > > Hi,
> > > > > Is it possible to add new pixel format to videodev2.h file?
> > > > >
> > > > > #define V4L2_PIX_FMT_MJ2C   v4l2_fourcc('M','J','2','C') /* Morgan
> > > > > JPEG 2000*/
> > > > >
> > > > > I have developed a V4L2 driver for the board with hardware JPEG2000
> > > > > codec (ADV202 chip). This driver uses that pixel format.
> > > > > I think JPEG 2000 is very perspective codec and it will be good if
> > > > > V4L2 will support it.
> > > > >
> > > > > Short description of the device is here:
> > > > > http://www.promwad.com/markets/linux-video-jpeg2000-blackfin.html
> > >
> > > Vladimir,
> > >
> > > It shouldn't be a problem adding this, but we prefer to only add such
> > > things when the driver code is also added at the same time. Are you
> > > going to submit the driver code as well to the list?
> > >
> > > Thanks,
> > >
> > > 	Hans
> >
> > Hans,
> > I can sibmit the driver code. But this driver is only for the blackfin
> > processor and will not work on other platforms. Does it make sense to
> > include the driver to the kernel source?
> > Maybe it will be better to include this driver to the blackfin.uclinux
> > kernel tree. How do you think?
>
> Please submit the driver to linux-media. The proper place for those drivers
> are under drivers/media. We have also other drivers there that are
> architecture specific (like omap drivers, OLPC, etc).
>

Good,  I will prepare the source and submit to linux-media. 


> Cheers,
> Mauro.



-- 
Vladimir Davydov
Senior Developer
Promwad Innovation Company
Web: www.promwad.com
22, Olshevskogo St.,
220073, Minsk,
BELARUS
Phone/Fax: +375 (17) 312–1246
E-mail: vladimir.davydov@promwad.com
Skype: v_davydov