Useful SW project for dxr3-developers

[Sergey V. Kostyuk]

Hello, that project 

https://sourceforge.net/projects/opensigma/

can be interested by the developers of drivers for Sigma chipset. It is alpha and avalable only via svn yet.

So I have question about support of encoder ADV7175 in DXR3 card. There is i2c-driver in linux-kernel. It is sharpen for zoran PCI-boards and lacks of many features. :( The driver for the same ADV7175 in DXR3 project are more functional but it hasnt some things like Closed Captioning support, Macrovision and may be somth. else.

I gonna implement support of NetStream2000 cards which are boarded with ADV7170/ADV7175/ADV7177 chipset. So I have to choose between writing new i2c-driver (the third :)) or modify existing. What do u think about modifying kernel-drivers to make it more universal for using in sigma-related projects?

Best wishes

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[Christian Gmeiner-4]

Hi Sergey,

how legal is it to use the Sigma SDK as basis for a new driver? Is the
SDK available to pubic without any NDAs and other limitations
which could be a show stopper for such a project?
If I would have an SDK and maybe a datasheet I would not come up with
a new API, instead I would check if existing ones are suitable
(Video4Linux2,...).

Back to your question :)
Why not extend the current in-kernel driver for ADV7175 chips?

Greets,
Christian Gmeiner

2008/5/20 Sergey V. Kostyuk <kostyuk@...>:

> Hello, that project
>
> https://sourceforge.net/projects/opensigma/
>
> can be interested by the developers of drivers for Sigma chipset. It is alpha and avalable only via svn yet.
>
> So I have question about support of encoder ADV7175 in DXR3 card. There is i2c-driver in linux-kernel. It is sharpen for zoran PCI-boards and lacks of many features. :( The driver for the same ADV7175 in DXR3 project are more functional but it hasnt some things like Closed Captioning support, Macrovision and may be somth. else.
>
> I gonna implement support of NetStream2000 cards which are boarded with ADV7170/ADV7175/ADV7177 chipset. So I have to choose between writing new i2c-driver (the third :)) or modify existing. What do u think about modifying kernel-drivers to make it more universal for using in sigma-related projects?
>
> Best wishes
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
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> Dxr3-devel mailing list
> Dxr3-devel@...
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>

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[Sergey V. Kostyuk]

Hi Christian

Here is my first question about problems with code licensing:

http://sourceforge.net/mailarchive/forum.php?forum_name=dxr3-devel&max_rows=25&style=nested&viewmonth=200711&viewday=6

there is also answer, but question is still open for me. :( SDK consists of two parts: source code and binaries. Binaries implement so called hwlib, thereas source code implements user interface. The source code from SDK hadnt be used, all interfaces developed by me. The binary was disassemled and fully reversed :)

Im expecting That some reversed code may be similar to original from Sigma. The register naming was taken from sources from ucLinux. Sigma provided ucLinux by some patches. So I can claim that I havent seen any code from SDK and will publish my code under GPL :))

I have lots of reversed code concerning em8400,em847x,em85xx to anyone who asked me. Actually low-level programming part of all that chipsets is close to em8300, some things was taken from DXR3 :) Thx

I know that I have to rewrite my project under video4l interface and I do that later. The lack of time is only problem.

About ADV7175: I think the same developing of kernel driver is right way.

Sergey

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[Sergey V. Kostyuk]

If You wanna became developer of that project let me know on the forum
https://sourceforge.net/forum/forum.php?forum_id=821250

That will be great to get VDR plugin. Im not video/audio processing guru so I need someone who can make user applications with good functionality.

Sergey

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