a patch to optimize theora using liboil[0], a framework to
integrate support for different architectures, just landed
in subversion.
to test it you need liboil from cvs
cvs -d :pserver:anoncvs@anoncvs.freedesktop.org:/cvs/liboil co liboil
and theora from the theora-oil branch
svn co http://svn.xiph.org/branches/theora-oil
with liboil, it is easy to add new optimized version of cpu intensive functions
for your architecture. functions currently used in theora include:
oil_colsad8x8_u8
oil_copy8x8_u8
oil_diff8x8_average_s16_u8
oil_diff8x8_const128_s16_u8
oil_diff8x8_s16_u8
oil_err_inter8x8_u8
oil_err_inter8x8_u8_avg
oil_err_intra8x8_u8
oil_fdct8x8theora
oil_recon8x8_inter
oil_recon8x8_inter2
oil_recon8x8_intra
oil_rowsad8x8_u8
oil_sad8x8_u8
oil_sad8x8_u8_avg
known fields that could need love are, ppc - altivec, sse & sse2
[0] http://www.schleef.org/liboil/