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4 commits

Author SHA1 Message Date
Nils Wallménius
412cdd6cf7 libtremor: port over ffmpeg's windowing code
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
2011-09-22 11:47:51 +00:00
Nils Wallménius
151424a6fd 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.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30578 a1c6a512-1295-4272-9138-f99709370657
2011-09-21 15:38:54 +00:00
Dave Hooper
67fb5415f7 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
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20783 a1c6a512-1295-4272-9138-f99709370657
2009-04-25 11:25:13 +00:00
Björn Stenberg
45bd7e0246 Codec lib directories renamed, except for demac.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19018 a1c6a512-1295-4272-9138-f99709370657
2008-11-05 13:30:58 +00:00
Renamed from apps/codecs/Tremor/window.c (Browse further)