Hi all,
I would recall the proposal for modifying the WMSTileFuser class in order
to reach better performances on image reading and writing.
The modifications on the WMSTileFuser class can be divided in 3 groups:
- improving the reading of every tile and the final image writing by
adding few classes and avoiding to call directly the ImageIO class, which
requires a lookup of the streams and readers/writers;
- improving the PNG8/GIF images by applying the Quantizer on them;
- improving the scaling of the final image by adding a better
RenderingHints configuration.
These proposal requires to move some parts of the code from GeoServer to
GeoTools and ImageIO-Ext for using the Quantizer class and the PNGWriter
class located in the gs-wms module.
With these modifications it could be possible to use the following classes
on GeoWebCache without cyclic dependencies.
I opened the following JIRA in order to trace the operation:
https://jira.codehaus.org/browse/GEOS-6376.
The exact order of the pull requests that will be sent will be:
- pull request for GeoTools;
- pull request for GeoWebCache;
- pull request for GeoServer.
These modifications will be on the master branch for GeoServer, GeoTools,
GeoWebCache, but a backport will be needed:
- for Geoserver 10.x. and 11.x
- for GeoWebCache on 1.5.0;
- for Geoserver on 2.4.x and 2.5.x;
If there is any question I would be pleased to answer.
Cheers,
Nicola.
2014-02-10 22:10 GMT+01:00 Jody Garnett <jody.garn...@gmail.com>:
> Not from me, technically what you are doing is very clear cut.
>
> It would be good to hear back from GWC list as that appears to be the most
> effected (i.e. new functionality).
>
> Jody Garnett
>
>
> On Tue, Feb 11, 2014 at 2:12 AM, Nicola Lagomarsini <
> nicola.lagomars...@geo-solutions.it> wrote:
>
>> Ok I will send an email to the ML.
>>
>> Is there another feedback?
>>
>> Cheers,
>> Nicola.
>>
>>
>> 2014-02-10 12:37 GMT+01:00 Jody Garnett <jody.garn...@gmail.com>:
>>
>> I am always troubled by such questions, let me think.
>>>
>>> As the original contributor you can pick up the code and contribute it
>>> to another project.
>>>
>>> Since it is Nicola is doing the work, your +1 on the GeoServer list as a
>>> PSC will work out fine. That way the GeoServer list has a record that the
>>> request was made, and that a PSC member approved.
>>>
>>>
>>> Jody Garnett
>>>
>>>
>>> On Mon, Feb 10, 2014 at 7:44 PM, Andrea Aime <
>>> andrea.a...@geo-solutions.it> wrote:
>>>
>>>> On Sun, Feb 9, 2014 at 1:29 PM, Jody Garnett <jody.garn...@gmail.com>wrote:
>>>>
>>>>> So I understand what is being proposed. I suppose my questions twofold
>>>>> a) what is your time frame for this work and b) why 10.x ( since we are
>>>>> nearing the 11.0)?
>>>>>
>>>>
>>>>> As for moving code between projects, everything looks okay. For the
>>>>> GeoServer code subject to a license change we will need a email request w/
>>>>> response from GeoServer PSC (Quantizer / PNGEncoder).
>>>>>
>>>>
>>>> No problem with it, but do we? I'm the sole author of both bits of
>>>> code, so my agreement with the backport should be enough. Or not?
>>>>
>>>> Cheers
>>>> Andrea
>>>>
>>>> --
>>>> == Our support, Your Success! Visit http://opensdi.geo-solutions.itfor
>>>> more information ==
>>>>
>>>> Ing. Andrea Aime
>>>> @geowolf
>>>> Technical Lead
>>>>
>>>> GeoSolutions S.A.S.
>>>> Via Poggio alle Viti 1187
>>>> 55054 Massarosa (LU)
>>>> Italy
>>>> phone: +39 0584 962313
>>>> fax: +39 0584 1660272
>>>> mob: +39 339 8844549
>>>>
>>>> http://www.geo-solutions.it
>>>> http://twitter.com/geosolutions_it
>>>>
>>>> -------------------------------------------------------
>>>>
>>>
>>>
>>
>>
>> --
>> ==
>> Our support, Your Success! Visit http://opensdi.geo-solutions.it for
>> more information.
>> ==
>>
>> Ing. Nicola Lagormarsini
>> Junior Software Engineer
>>
>> GeoSolutions S.A.S.
>> Via Poggio alle Viti 1187
>> 55054 Massarosa (LU)
>> Italy
>> phone: +39 0584 962313
>> fax: +39 0584 1660272
>>
>> http://www.geo-solutions.it
>> http://twitter.com/geosolutions_it
>>
>> -------------------------------------------------------
>>
>
>
--
==
Our support, Your Success! Visit http://opensdi.geo-solutions.it for more
information.
==
Ing. Nicola Lagormarsini
Junior Software Engineer
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
http://www.geo-solutions.it
http://twitter.com/geosolutions_it
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