On Wed, Aug 10, 2011 at 2:52 PM, Roger Oberholtzer
I am looking at libjpeg on openSUSE 11.4. There is a variation of the good old libjpeg which is called libjpeg-turbo. It enables some intel processor instructions to supposedly speed up encoding and decoding byu a factor of 2x - 4x.
I see that I have libjpeg-turbo installed. The odd thing is that the RPM does not actually contain a libjpeg. It is only the wrapper programs like cjpeg. These programs just seem to use the regular /usr/lib/libjpeg.so.62 that comes with the usual libjpeg rpm.
So, what is libjpeg-turbo really installing? Surely the turbo improvements must be in the library itself. If the standard libjpeg.so.62 is compiled with these extensions, what could a turbo cjpeg add?
As usual, I'm confused.
Roger, I don't recall the details, but there were lots of discussions about libjpeg-turbo on the factory list back before 11.4 came out. You may need to go back and read some of that if no one here knows the answer. Or just post to factory and ask for a summary. It may be easier than reading through 100 or messages. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org