rockbox/apps/codecs/libfaad/filtbank.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

Rework of libfaad in several areas. Allow removal of malloc with a new define FAAD_STATIC_ALLOC (in common.h). For now malloc is not fully removed but used by a few arrays needed for AAC-HE SBR+PS only. Reason to keep malloc is to have this amount of memory available for AAC-LC files which might require large m4a tables. The changes make the allocation routines much smaller, better centralized and allow to move duplicated code from aac.c/raa.c to libfaad. The rework includes removal of (now and former) unused code as well.

2011-04-24T20:19:05+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29778 a1c6a512-1295-4272-9138-f99709370657

Use MEM_ALIGN_ATTR in libfaad. Remove global array and re-use existing one.

2011-02-05T19:50:16+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29211 a1c6a512-1295-4272-9138-f99709370657

Refacture parts of libfaad filterbank. Faster windowing for 8-short-window sequences.

2010-07-11T12:33:35+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27380 a1c6a512-1295-4272-9138-f99709370657

Use new MDCT library for libfaad. Speeds up AAC-LC by 2.5MHz.

2010-02-20T00:29:31+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24781 a1c6a512-1295-4272-9138-f99709370657

Fix FS#10174 by correcting an oversimplification of the AAC window switching code I introduced with the unified IMDCT library. Should significantly improve accuracy for all AAC files.

2009-04-29T17:44:02+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20821 a1c6a512-1295-4272-9138-f99709370657

Combine the Vorbis, WMA and AAC IMDCT functions and put them into the codeclib. Combined IMDCT is now based on existing Tremor transform. Reduces CPU for 192k AAC by 21MHz on Coldfire, and 5MHz on PP5024. WMA and Vorbis should have no functional changes since they already used this code. Further optimization is possible and would benefit all 3 codecs.

2008-09-04T18:02:10+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18412 a1c6a512-1295-4272-9138-f99709370657

Use WMA windowing optimizations for AAC. Saves about 3.5MHz on Coldfire, and about 2 MHz on ARM. Thanks to amiconn for help with Coldfire ASM improvements. Next step: dump faad IMDCT.

2008-08-10T20:19:38+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18238 a1c6a512-1295-4272-9138-f99709370657

Too much on the last commit.

2008-07-17T18:36:47+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18085 a1c6a512-1295-4272-9138-f99709370657

Use Tremor IMDCT for WMA. Gives a ~20% speedup on ARM and coldfire. All my test samples gave equivilent or better accuracy (>>16 bit), but there may still be problems. Code becomes somewhat less readable since the IMDCT has bits of Vorbis in it, but this is not a serious issue and the old ffmpeg transform remains in SVN if anyone wants it. Also, WMA now passes Vorbis as the fastest transform codec on ARM, although MPC remains the fastest lossy codec overall.

2008-07-17T17:43:49+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18084 a1c6a512-1295-4272-9138-f99709370657