[Qgis-developer] EXTERNAL: Re: QGIS SZIP.DLL Licensing?

Mon Feb 3 11:59:56 PST 2014

Perhaps you do not understand why szip is included - it is there to be able
to unpack hdf5 files with encoding - this cannot be replaced by 7zip.

Also, from the page at http://www.hdfgroup.org/doc_resource/SZIP/

---
Licensing terms
The version of Szip distributed with HDF products is free for
non-commercial use, which may occur in two sets of circumstances:

   - Non-commercial users may use the Szip software integrated with HDF
   products to both encode (compress) and decode (uncompress) data. This
   applies to educational and research applications.
   - Commercial users may use the software to decode any data. Further,
   they may use the software in internal activities that do not involve or
   result in the development of an Szip-based software product.

Commercial licenses are available for commercial users who wish to
distribute an Szip-based software product or engage in commercial uses that
are not allowed above. For further licensing information or to view a copy
of the Szip copyright statement, see Commercial use terms and the copyright
and license notice<http://www.hdfgroup.org/doc_resource/SZIP/Commercial_szip.html>
pertaining
to Szip in HDF products.

---

Also from this page
http://www.hdfgroup.org/doc_resource/SZIP/Commercial_szip.html

Commercial users may use the Szip software integrated with HDF to decode
data and for internal activities that do not involve or result in the
development of an Szip-based software product.

It seems to me that it is OK (without permission) to use szip for 1) any
non-commercial use and 2) commercial use with decoding only.
As I have stated, qgis does no allow to encode any hf5 files with szip
encoding, so any commercial use would also be ok
Now perhaps I do not understand the wording there, as I am not a lawyer.

On Mon, Feb 3, 2014 at 5:22 PM, Moriarty, Mark F
<mark.f.moriarty at lmco.com>wrote:

>  Szip is not released under GPL, has patents, is restricted licensing.
> It isn't a classic FOSS package.  Here's the license related to Szip use
> with HDF:
>
> The SZIP Science Data Lossless Compression Program is Copyright (C) 2001
> Science
>
> & Technology Corporation @ UNM.  All rights released.  Copyright (C) 2003
> Lowell
>
> H. Miles and Jack A. Venbrux.  Licensed to ICs, LLC, for distribution by
> the
>
> University of Illinois' National Center for Supercomputing Applications as
> a
>
> part of the HDF data storage and retrieval file format and software library
>
> products package.  All rights reserved.  Do not modify or use for other
>
> purposes.
>
>
>
> SZIP implements an extended Rice adaptive lossless compression algorithm
>
> for sample data.  The primary algorithm was developed by R. F. Rice at
>
> Jet Propulsion Laboratory.
>
>
>
> SZIP embodies certain inventions patented by the National Aeronautics &
>
> Space Administration.  United States Patent Nos. 5,448,642, 5,687,255,
>
> and 5,822,457 have been licensed to ICs, LLC, for distribution with the
>
> HDF data storage and retrieval file format and software library products.
>
> All rights reserved.
>
>
>
> Revocable, royalty-free, nonexclusive sublicense to use SZIP decompression
>
> software routines and underlying patents is hereby granted by ICs, LLC, to
>
> all users of and in conjunction with HDF data storage and retrieval file
>
> format and software library products.
>
>
>
> Revocable, royalty-free, nonexclusive sublicense to use SZIP compression
>
> software routines and underlying patents for non-commercial, scientific use
>
> only is hereby granted by ICs, LLC, to users of and in conjunction with
> HDF
>
> data storage and retrieval file format and software library products.
>
>
>
> For commercial use license to SZIP compression software routines and
> underlying
>
> patents please contact ICs, LLC, at:
>
>
>
>         Joseph J. Feeley, Ph.D., P.E.
>
>         Chief Executive Officer
>
>         ICs, LLC
>
>         PO Box 2236
>
>         McCall, ID 83638
>
>
>
>         Phone: (208) 315-0029
>
>         Email: Joe.Feeley at frontiernet.net
>
>
>
> I can't legally use QGIS with SZip, unless there's some kind of license to
> permit szip.dll distribution with QGIS.  For instance, HDF has permission
> for anyone, including commercial users (like me, as I work for a company,
> though we don't directly use QGIS to generate $), to use szip decode
> functionality.
>
>
>
> Possible ways out:
>
> 1)       Obtain permission from Joe.Feeley to distribute szip with qgis,
> same terms as HDF - okay for everyone to use to decode, but commercial
> users (like me) aren't permitted to use its encode functionality.  That's
> fine, I can't make new SZip zipfiles, but can get the unpack of them.
>
> 2)      Modify QGIS to not require szip.  Make it an add-on applet, a
> plug-in, rather than something absolutely mandatory.  Right now, qgis
> closes at startup if it doesn't see a working szip.dll.
>
> 3)      A variant of (2), provide a dummy szip.dll, a "fake", so qgis is
> happy.
>
> 4)      Another variant of (2), preferable to me, switch to permit use of
> some other, open distribution, zip, like 7zip.  You would lose the SZip
> Rice lossless functionality, but for a lot of basic bulk unpacking 7zip is
> fine.
>
>
>
> *From:* Etienne Tourigny [mailto:etourigny.dev at gmail.com]
> *Sent:* Monday, February 03, 2014 2:00 PM
> *To:* Moriarty, Mark F
> *Cc:*
> *Subject:* EXTERNAL: Re: [Qgis-developer] QGIS SZIP.DLL Licensing?
>
>
>
> What is the problem with distributing the szip.dll ? There is no agreement
> between qgis (or gdal) with szip/hdf group.
>
>
>
> My understanding of the info in this page
> http://www.hdfgroup.org/doc_resource/SZIP/ is:
>
>
>
> - In no circumstances a user can create hdf5 files with szip encoding
> within qgis. So far, only gtiff files are created within qgis.
>
>
>
> - you are correct in stating that commercial products can use szip for
> decoding only, so it is OK for qgis to distribute the szip library.
>
>
>
> - as qgis is not a commercial product and does not allow to create
> szip-encoded hdf5 files, there is no need for any commercial licence.
>
>
>
> - if someone were to write software, based on qgis (and gdal), which sould
> create an szip-encoded hdf5 file, that entity would require a commercial
> licence
>
>
>
> There is no GPL szip library, AFAIK.
>
>
>
> On Mon, Feb 3, 2014 at 3:15 PM, Moriarty, Mark F <mark.f.moriarty at lmco.com>
> wrote:
>
> Does QGIS have any license agreement related to SZIP use?
>
>
>
> I'd like to use QGIS on a project, but we're stuck on whether/how the
> szip.dll is licensed for use.
>
>
>
> For example HDF specifically has a license page asserting permission to
> use szip in their distribution, so long as it is used within the context of
> their overall app.  For a commercial firm, the permission is just to
> decode, not to encode, but that is fine.
>
>
>
> I tried just deleting/renaming the szip.dll, since we do not actually need
> the functionality for our use, but it appears to be tightly bound to the
> build - qgis errors-out if it does not detect a proper, functioning,
> szip.dll on startup.
>
>
>
> If there isn't a license statement from the intellectual property owner
> allowing its use/distribution to decode with qgis, is it possible to
> include a user-controllable switch to allow not including it, or to perhaps
> include a true GPL zip package, albeit losing the lossless functionality?
>
>
>
> Thanks.
>
>
>
> Mark
>
>
>
>
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