FSF addresses used in PA sources are no longer valid and rpmlint
generates numerous warnings during packaging because of this.
This patch changes all FSF addresses to FSF web page according to
the GPL how-to: https://www.gnu.org/licenses/gpl-howto.en.html
Done automatically by sed-ing through sources.
In some cases, depending on the instruction that performs the load, orc
ignores the size of the parameter when loading it for the first time.
Explicitly load the parameter into a temp to make sure it is loaded
correctly, like we do for the 2ch case.
See https://bugzilla.gnome.org/show_bug.cgi?id=742271
This adds volume scaling for 1- and 2-channel software volume scaling
using Orc. While testing the MMX and SSE backends on a Core2, I see an
~2x performance benefit over the hand-rolled MMX and SSE code. Since I
haven't been able to test on other architectures, the Orc code is only
used when MMX/SSE* is present. This can be changed in the future after
testing on AMD and ARM machines.
