Hi Andrea,
So, it kind of looks like there never be a 64 bit JAI (native) for Windows.
As to a slowdown, it perhaps isn't as much as you say, I did some
comparisons with JAI(Native) on and off with Jpeg CMYK encoded Geotiffs, and
saw about a 20% performance penalty for serving WMS. With 64 bit Java, we
can use a whole lot more RAM, which might more than make up the difference.
So, just to get things straight, do imageio and imageio-ext depend on JAI
Native, and JAI Native is only 64 bit on Linux/Solaris?
Or, does JAI and ImageIO-Ext exist in the Java version (non-native
libraries)? From the JAI docs:
"JAI can be run without its native acceleration layer without loss of
functionality".
Doesn't say anything about ImageIO, or ImageIO-ext. Can these be run without
native acceleration as well? I know GDAL itself is easy to make 64 bit, and
wouldn't it do a lot of the work?
I saw this:
http://forums.java.net/node/681767?#comment-733344
Which says:
>>The 64-bit native library for Windows is not available at the moment,
see https://jai-imageio-core.dev.java.net/issues/show_bug.cgi?id=62
The jai_imageio.jar in any of those download bundles should work
on 64-bit Windows, but without support for 12-bit lossy JPEG,
lossless JPEG, or JPEG-LS.<<
This seems to indicate jai_imageio.jar works non-native. Wouldn't then
imageio-ext work? There are certainly a lot of files like this in geoserver
lib:
imageio-ext-arcgrid-1.0.8.jar
imageio-ext-gdal-bindings-1.4.5b.jar
imageio-ext-gdalkakadujp2-1.0.8.jar
etc...
I'm confused.
Roger
On Wed, Feb 2, 2011 at 8:23 PM, Andrea Aime <[email protected]>wrote:
> On Wed, Feb 2, 2011 at 7:49 PM, Ottofaro, Jack <[email protected]>
> wrote:
> > Hi,
> >
> > I read an earlier post indicating that imageio-ext is not supported on a
> 64
> > bit Windows platform and I’m assuming that is still the case. If I do not
> > have the imageio-ext loaded what do I lose? Is it only a performance
> > enhancer or do I actually lose functionality like the ability to display
> > raster images?
>
> There is no JAI and JAI Image I/O native extensions for windows 64 bit.
> Not having them results in a slowdown, pretty significant one if you
> are serving raster data.
>
> Not having imageio-ext means you cannot access certain data formats,
> such as MrSid, JPEG2000 and the like (the list is actually long)
>
> Cheers
> Andrea
>
> --
> Ing. Andrea Aime
> Technical Lead
>
> GeoSolutions S.A.S.
> Via Poggio alle Viti 1187
> 55054 Massarosa (LU)
> Italy
>
> phone: +39 0584962313
> fax: +39 0584962313
>
> http://www.geo-solutions.it
> http://geo-solutions.blogspot.com/
> http://www.linkedin.com/in/andreaaime
> http://twitter.com/geowolf
>
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