rockbox/apps/codecs/lib/mdct.c, branch master

Add codecs to librbcodec.

2012-04-25T20:13:20+00:00

Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius 
Tested-by: Nils Wallménius

codeclib: more cf asm for the mdct, saves ~0.7MHz decoding vorbis on h300.

2011-09-15T08:31:39+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30552 a1c6a512-1295-4272-9138-f99709370657

codeclib: tweak coldfire mdct asm a bit more, flip usage of mac/msac instead of explicit negation, changes output slightly but is as close to the c version as before. Gives about 0.4MHz speedup of vorbis on cf.

2011-09-13T16:53:13+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30516 a1c6a512-1295-4272-9138-f99709370657

codeclib: coldfire asm for the TRANSFORM* functions in the fft and a little for the mdct, speeds up codecs using the codeclib mdct 0.5-1.5MHz on h300.

2011-09-12T11:27:48+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30513 a1c6a512-1295-4272-9138-f99709370657

Make codeclib_misc.h include the asm headers to simplify inclusion magic.

2010-07-29T12:52:04+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27615 a1c6a512-1295-4272-9138-f99709370657

Some asm for mdct on coldfire, speeds up vorbis decoding by about 0.3MHz

2010-05-13T08:03:42+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25984 a1c6a512-1295-4272-9138-f99709370657

Remove unused GPL code from ffmpeg mdct library in order to restore it to LGPL.

2010-03-05T21:37:46+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25035 a1c6a512-1295-4272-9138-f99709370657

Make mdct compilable again for non-ARM targets.

2010-02-21T21:39:38+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24822 a1c6a512-1295-4272-9138-f99709370657

Get a few more % speedup on ARM (measured on ipod video) - improve imdct full final symmetries using ldm/stm and simple register swapping. Also, add more comments (and improve/update some of the existing ones) regarding the layout of the imdct_half and the imdct_full

2010-02-21T21:14:40+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24819 a1c6a512-1295-4272-9138-f99709370657

Adding ICODE for imdct (and its constituent ifft bits) gives 0.5MHz boost on arm (ipod video) and about 5MHz boost on coldfire (H120)

2010-02-20T11:00:16+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24786 a1c6a512-1295-4272-9138-f99709370657