3 commits

Author	SHA1	Message	Date
Dave Hooper	730a618fae	Adding ICODE for imdct (and its constituent ifft bits) gives 0.5MHz boost on arm (ipod video) and about 5MHz boost on coldfire (H120) ... git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24786 a1c6a512-1295-4272-9138-f99709370657	2010-02-20 11:00:16 +00:00
Dave Hooper	3a9852be1c	I don't yet fully understand why this is required, but without it the output is signed-inverted (compared to e.g. the output of oggdec). ac3 confirmed to be ok so the problem must be in the imdct not the ifft. but the algo seems correct (in that seems same as original ffmpeg version).. ... git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24739 a1c6a512-1295-4272-9138-f99709370657	2010-02-18 00:14:13 +00:00
Dave Hooper	42774d3128	Merge from branches/mdctexp - faster ifft+imdct in codec lib ... git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24712 a1c6a512-1295-4272-9138-f99709370657	2010-02-17 00:49:53 +00:00