[Qgis-developer] qgis-server and troubles using jpeg as output format

[Andrea Peri]

thx,
Larry,
your link is really useful for me.

Infact reading it I see that I was searching the plugns in wrong paths.
:)

So I set the right path in the environment var.

export QT_PLUGIN_PATH=/usr/lib/x86_64-linux-gnu/qt4/plugins

Also I check that in plugin there is available che jpeg library.

but still the map is not generate in jpeg format.

Now I'm investigating to see if there is a problem of plugins version.
Infact I read that qt is really sensible to the exact version of plugins.

Andrea.


2014-06-25 1:30 GMT+02:00 Larry Shaffer <larrys at dakotacarto.com>:
> Hi Andrea,
>
> On Tue, Jun 24, 2014 at 3:21 PM, Andrea Peri <aperi2007 at gmail.com> wrote:
>>
>> Hi Larry,
>>
>> thx for hints,
>>
>> I never suppose the jpeg was due to a plugin.
>> I check the existence of libjpeg, but never seen for a plugin folder
>> because I'm running only the qgis-server without any desktop
>> capability.
>>
>> Now searching for this plugin folder,
>> effectively I see a broken symbolic link in the
>> /usr/share/qt4/plugins  forward a ../../lib/qt4/plugins
>>
>> It seem like if I'm not install something....
>> :/
>
>
> Not sure what might be missing (or what Debian and Qt versions you are
> using), but it seems the image format plugins are part of the QtGui package
> install [0].
>
> [0] https://packages.debian.org/wheezy/amd64/libqtgui4/filelist
>
> Regards,
>
> Larry
>
>>
>> I choose to install many libs from debian repos
>> also these two:
>> pyqt4-dev-tools, python-qt4-dev
>>
>> Perhaps I miss something other lib,
>> but I guess this should be report by the cmake routines.
>>
>> Perhaps a missing check in the cmake ?
>>
>> Now I need to understand what library is missing.
>> Unfortunately I'm not so skill with qt libs.
>>
>> there is somewhere a list of all the need libraries ?
>>
>> Thx,
>>
>> Andrea.
>>
>> 2014-06-24 21:46 GMT+02:00 Larry Shaffer <larrys at dakotacarto.com>:
>> > Hi Andrea,
>> >
>> > It sounds to me like your Qt, when loaded by qgis_mapserv.fcgi, is not
>> > correctly finding the 'plugins' directory, specifically its
>> > 'imageformats'
>> > subdirectory. If that machine also runs QGIS Desktop, you can verify
>> > your Qt
>> > install has the image plugins by launching QGIS and checking the
>> > Providers
>> > section in the About QGIS dialog.
>> >
>> > Since Qt has native, built-in support for PNG, it should always be able
>> > to
>> > render a WMS request to PNG. If Qt can not load the Qt JPEG image format
>> > plugin, then JPEG will not be rendered.
>> >
>> > Just guessing, but you may try setting the env variable QT_PLUGIN_PATH
>> > in
>> > the FCGI environment to help Qt find the plugins directory [0]. If the
>> > imageformats subdirectory is missing some plugins, then there is
>> > something
>> > funky/missing with your Qt install.
>> >
>> > [0] http://qt-project.org/doc/qt-4.8/deployment-plugins.html
>> >
>> > Regards,
>> >
>> > Larry
>> >
>> >
>> > On Tue, Jun 24, 2014 at 7:26 AM, Andrea Peri <aperi2007 at gmail.com>
>> > wrote:
>> >>
>> >> Hi,
>> >> I do some tests.
>> >> Using a shell environment to see any error returned.
>> >>
>> >> I see using the
>> >> "FORMAT=image/png"
>> >>  the image is correctly returned.
>> >> Instead using the
>> >> "FORMAT=image/jpeg"
>> >> the image is not returned.
>> >> But no crash at all.
>> >> Simply the qgis-server request will end returning nothing.
>> >>
>> >> Also using a debug session no error reported.
>> >> Only apparently return nothing.
>> >>
>> >>
>> >> A.
>> >>
>> >>
>> >> 2014-06-24 14:31 GMT+02:00 Andrea Peri <aperi2007 at gmail.com>:
>> >> > Hi,
>> >> > I'm having some trouble with qgis-server and the output in jpeg
>> >> > format.
>> >> >
>> >> > The request getmap using the jpeg format as not response at all.
>> >> >
>> >> > I try on two distinct debian machine but the result is the same.
>> >> >
>> >> > So I guess the most probable theory is the lack of a library or a
>> >> > library too early on Debian stable distro'.
>> >> >
>> >> > So I like to know what is the used jpeg library and if there is a
>> >> > minimal version for the jpeg library used.
>> >> >
>> >> > Thx
>> >> > --
>> >> > -----------------
>> >> > Andrea Peri
>> >> > . . . . . . . . .
>> >> > qwerty àèìòù
>> >> > -----------------
>> >>
>> >>
>> >>
>> >> --
>> >> -----------------
>> >> Andrea Peri
>> >> . . . . . . . . .
>> >> qwerty àèìòù
>> >> -----------------
>> >> _______________________________________________
>> >> Qgis-developer mailing list
>> >> Qgis-developer at lists.osgeo.org
>> >> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>> >
>> >
>>
>>
>>
>> --
>> -----------------
>> Andrea Peri
>> . . . . . . . . .
>> qwerty àèìòù
>> -----------------
>
>



-- 
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Andrea Peri
. . . . . . . . .
qwerty àèìòù
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