rockbox/apps/codecs/libtremor/window.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

libtremor: port over ffmpeg's windowing code

2011-09-22T11:47:51+00:00

Use the windowing approach from ffmpeg in tremor, does the mdct doubling, windowing and overlap add in one go.
Also uses less memory so all the processing buffers fit in iram on targets with small iram for the common blocksizes (256/2048) now.

Speeds up decoding of vorbis files by 3MHz for 256/2048 and 20MHz for 512/4096 files on h300.
Speeds up decoding of vorbis files by 3MHz for 256/2048 and 4.5MHz for 512/4096 on the beast.
Speeds up decoding of vorbis files by 0.3MHz for 256/2048 and 1MHz for 512/4096 on c200v1.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30580 a1c6a512-1295-4272-9138-f99709370657

codeclib/libtremor: Clean up duplication of inline funcs, constify the ones in codeclib and copy over the slightly faster MULT31_SHIFT15 from tremor for cf.

2011-09-21T15:38:54+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30578 a1c6a512-1295-4272-9138-f99709370657

Commit FS#9882 - make better use of iram at different quality encodings, remove redundant memsets, implement doublebuffer if it will fit in iram to save a mempcy each frame, and some alignment fixes for coldfire

2009-04-25T11:25:13+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20783 a1c6a512-1295-4272-9138-f99709370657

Codec lib directories renamed, except for demac.

2008-11-05T13:30:58+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19018 a1c6a512-1295-4272-9138-f99709370657