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Old 20-03-2012, 09:57   #1
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BSB4 Plug-in for Linux

Can someone advise when it is planned for the BSB4 plug-in to work with Linux/Ubuntu, please.

VisitMyHarbour, in collaboration with Maptech, will shortly be selling UKHO (Admiralty) raster charts in BSB4 format for around 50 for the whole UK. These should be ideal (and legal) for UK sailors.

Thanks
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Old 20-03-2012, 10:59   #2
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Re: BSB4 Plug-in for Linux

To understand the situation read this post.
As far as I know, nobody has accepted Brak's offer.
So there you have it, a Linux BSB4 plugin is certainly viable. Someone just has to accept the suggested deal, and do it.

Thomas
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Old 20-03-2012, 13:02   #3
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Re: BSB4 Plug-in for Linux

Another thing is brewing, that may just change the charting landscape a bit.
Linux kernel 3.3 has just been released. Expect this kernel in popular distros not later than coming autumn.
With the 3.3 kernel Linux can just run any Android program.
Anyone knows if BSB4 is available for Android?
Anything else nautical worth having, not counting Manimauls MatrixMariner?
Thomas
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Old 20-03-2012, 13:38   #4
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Re: BSB4 Plug-in for Linux

Quote:
Originally Posted by cagney View Post
To understand the situation read this post.
As far as I know, nobody has accepted Brak's offer.
So there you have it, a Linux BSB4 plugin is certainly viable. Someone just has to accept the suggested deal, and do it.

Thomas
I can understand that no-one wants to take up the Polar Navy offer.

However, would it not be possible to create a plug-in for Linux that is similar to the Windows BSB4 plug-in i.e. one that uses already loaded BSB4 charts together with their associated encryption information. The charts could be loaded into a Windows folder using a Windows programme and then referenced in a Windows partition from OpenCPN running under Linux.

Is this technically difficult or just not an elegant solution for the Linux purists?
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Old 24-03-2012, 04:05   #5
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Re: BSB4 Plug-in for Linux

Bump!

Does no-one know the answer to this one?
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Old 24-03-2012, 04:19   #6
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Re: BSB4 Plug-in for Linux

Playtime...
Re-read cagney's post and the post it refers to and try to understand what they say. If something like what you suggest was possible, it would have been done. But it's not.

Pavel
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Old 24-03-2012, 07:23   #7
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Re: BSB4 Plug-in for Linux

Pavel

Thanks for the response. I have now read the whole thread referenced by Cagney, not just the Polar Navy (Brak) proposal part pointed to in the link above.

However, I am still unable to fully understand the technical problem. [As an aside, my last coding efforts were in Coral66 and Ada so I am not fully up to speed with 'modern' languages and OSs!]

Is it actually 'impossible' to develop the code to read previously loaded BSB4 charts under Linux (because proprietary encryption type data is not available) or is it just difficult/tedious to generate an SDK for BSB4 on Linux as PolarNavy have done?

BTW I would add that I am big fan of OpenCPN and it is now the navigation programme of choice (under Windows) on Playtime. However, like others, I am not entirely happy running such 'mission critical' software under Windows and would be delighted if I could get my charts to load under Linux/Ubuntu!
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Old 24-03-2012, 08:04   #8
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Re: BSB4 Plug-in for Linux

Playtime...
I understand why you fail to understand the technical problem - there simply is no technical problem at all. It's all about the legal framework of the BSB4 (and for vector charts S-63) format which prevents anybody from creating an open implementation of it.
The basic condition for getting the permission to implement the format is that the implementation never allows the user to get access to the unencrypted data - impossible to meet for an open source project. That's why Brak made his offer - he produced an SDK for PolarView (which is closed source and thus can meet the conditions to get the format implementation license) and offered it under conditions that could be accepted if one wanted to spend the time selling the result. Nobody accepted to date.

Pavel
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Old 24-03-2012, 08:13   #9
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Re: BSB4 Plug-in for Linux

OK - I understand that.

One last question - given the legal/commercial problem, how was this overcome for Windows?
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Old 24-03-2012, 08:18   #10
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Re: BSB4 Plug-in for Linux

Using a Windows-only 3rd party SDK.
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