Hi everyone,
I've just released version 1.1.4. This includes some code cleanup and
improvements to the fixed-point port and SSE optimizations. All the SSE
code has been converted to intrinsics and some new functions have been
implemented with SSE. Overall, the speed has been increased by up to
~30% with SSE.
Jean-Marc
--
Jean-Marc Valin, M.Sc.A., ing. jr.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada
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Nice! Am I right with the assumption, that currently you have to enable processor specific optimizations with compile/configure options? How difficult would it be to add support for runtime CPU detection? Is this a feature you might consider adding? Christian <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'speex-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
> Am I right with the assumption, that currently you have to enable > processor specific optimizations with compile/configure options? > > How difficult would it be to add support for runtime CPU detection? > Is this a feature you might consider adding?Pretty complicated because of some annoying decisions taken by the gcc team. The problem is that gcc won't let you use intrinsics unless the file is compiled with -march=pentium3 (or higher). Unfortunately, this means you have to put all the SSE stuff in another file, which is complicated for some of the Speex files. Also, you have to find a portable way to get the build system use different compilation switches for different files. Last thing, it also makes the detection function less trivial. Jean-Marc -- Jean-Marc Valin, M.Sc.A., ing. jr. LABORIUS (http://www.gel.usherb.ca/laborius) Université de Sherbrooke, Québec, Canada -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 190 bytes Desc: Ceci est une partie de message numériquement signée. Url : http://lists.xiph.org/pipermail/speex-dev/attachments/20040121/43f1fe97/signature-0001.pgp