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Forum Topic - Image compression on QNX 6.4.1:

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Daniel Solomon

02/02/2010 11:45 AM

post46399

I'm interested in a library that would allow me to take incoming TIFF images and compress them into a more compact 
format, such as JPEG, before writing them to disk.

I've heard of ffmpeg in the past, but as far as I understand those libraries aren't supported on QNX. I've also heard of
 Multimedia Framework TDK. I read the overview document (at http://www.qnx.dk/developers/docs/6.3.2/photon/multimedia2/
overview.html), but I was wondering if anyone could add more basic information regarding this framework: is it included 
with QNX, is it bought separately, does it allow for image compression (especially TIFF to JPEG) in addition to audio/
video?

Any information either regarding the Multimedia Framework or other possible solutions will be much appreciated.

Kevin Miller

02/02/2010 12:06 PM

post46401

Re: Image compression on QNX 6.4.1

Check out http://www.ijg.org/ . They have a POSIX-compatible free library that does all sorts of JPEG tasks. I have used
 it extensively under 4.25; it compiled "right out of the box", and seemed to be very efficient. I included it in a 
video capture board driver that I wrote a while back, where it was compressing bitmap images in real-time. I had 
absolutely no problems with it. I would expect that it would work well with Neutrino.

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