Adding a bit to this. The longer term plan is to make use of these util classes also in the core GWC where we chunk and write down metatiles. There is room for making that part faster/more scalable.
Regards, Simone Giannecchini == Our support, Your Success! Visit http://opensdi.geo-solutions.it for more information. == Ing. Simone Giannecchini @simogeo Founder/Director GeoSolutions S.A.S. Via Poggio alle Viti 1187 55054 Massarosa (LU) Italy phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 333 8128928 http://www.geo-solutions.it http://twitter.com/geosolutions_it ------------------------------------------------------- On Fri, Feb 28, 2014 at 4:06 PM, Nicola Lagomarsini <nicola.lagomars...@geo-solutions.it> wrote: > 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.it for >>>>> 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 > > ------------------------------------------------------- > > ------------------------------------------------------------------------------ > Flow-based real-time traffic analytics software. 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All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk _______________________________________________ GeoTools-Devel mailing list GeoTools-Devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-devel
