I would also suggest looking at libjpeg-turbo which I believe is going to become the default in Ubuntu a a couple other distributions (already or soon). http://libjpeg-turbo.virtualgl.org/
*libjpeg-turbo is a derivative of libjpeg <http://www.ijg.org> that uses SIMD instructions (MMX, SSE2, NEON) to accelerate baseline JPEG compression and decompression on x86, x86-64, and ARM systems. On such systems, libjpeg- turbo is generally 2-4x as fast as the unmodified version of libjpeg, all else being equal. * I have been using this for 2 years and know many others that are as well. It does make considerable performance improvement for jpeg processing. Brian On Mon, May 21, 2012 at 10:21 PM, George Kirkham <[email protected]>wrote: > Hi,**** > > ** ** > > If you know, could you tell me the package dependencies and versions or > OpenMeetings? **** > > ** ** > > I am guessing that in particularly for Ubuntu, that many of the old > installation instructions that request people to install packages which are > no longer required, because the packages have been updated or superceeded. > **** > > ** ** > > For example what are OpenMeeings actual application/package requirements: > sun-java >=6, swftools >=9, Sox >= 12, xpdf (because of libjpeg62?), > libjpeg >=62, jod = 3.0-beta-4, imagemakick, lame, ghostscript, ffmpeg, > [and others?]**** > > ** ** > > Can OpenMeetings use turbo live jpeg libjpeg-turbo ? instead of libjpeg62 > or libjpeg8 ?**** > > ** ** > > I am trying to better understand the packages for which OpenMeetings is > dependent on.**** > > ** ** > > apt-get install libgif-dev xpdf libfreetype6 libfreetype6-dev *libjpeg62 > libjpeg8* libjpeg8-dev**** > > ** ** > > Questions that I would like to ask are;**** > > **1) **Why do we install both libjpeg62 and libjpeg8 ? surely libjpeg8 > is all that is required ? And if libjpeg62 is required then why do we > install the development package for libjpeg8 and not libjpeg62 ? > > **** > > **2) **Why do we install the development version of libjpeg8-dev? > > **** > > **3) **Why do we install the development version at all ?**** > > ** ** > > ** ** > > > http://code.google.com/p/openmeetings/source/browse/wiki/UbuntuLucidLTS.wiki?spec=svn3925&r=3925 > now we can progress with swftools > > get the latest from here http://www.swftools.org/download.html > > {{{ > mkdir swftools > cd swftools > wget http://www.swftools.org/swftools-2011-01-23-1815.tar.gz > tar -zxvf swftools-2011-01-23-1815.tar.gz > cd swftools-2011-01-23-1815 > }}} > > because of some missing items from later versions of libjpeg, xpdf needs > to be put into the build**** > > ** ** > > http://code.google.com/p/openmeetings/issues/detail?id=135**** > > The dependencies :**** > > libc6 (>= 2.5-0ubuntu14 ), libfreetype6 (>= 2.2.1-5ubuntu1.1 ), libjpeg62 (>= > 6b-13**** > > ), python2.5 (>= 2.5.1-0ubuntu1 ), python-imaging (>= 1.1.6-0ubuntu3 ), > zlib1g (>= 1 )**** > > ** ** > > ** ** > > Thanks,**** > > ** ** > > George Kirkham**** > > ** ** >
