WebM/libvpx 0.9.5 has AltiVec code, but it is not part of the build system.

For TenFourFox, I preparsed the .asm files into .s files that the Tiger as
would accept, mostly with the included Perl preprocessor tool (GPL; see
source for license) and partially by hand for some of the complicated macros
that the preprocessor was not able to handle correctly. These were then
integrated into VP8 and into the Firefox build system for TenFourFox.
The original WebM .asm files are here for reference, with whatever handtuning
I made to feed them to the preprocessor. Only the .s files themselves are
actually compiled, however.

These .s files are under the same license as the rest of WebM and may be
returned back to the project, as they were technically already part of it
originally, as long as credit for their original author and my own changes
is maintained.

Cameron Kaiser
classilla@floodgap.com