rockbox/apps/codecs/demac/libdemac/decoder.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

Use MEM_ALIGN_ATTR in libdemac instead of fixed alignment. Speeds up arm11 by ~6%.

2010-11-21T17:58:42+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28632 a1c6a512-1295-4272-9138-f99709370657

Move (small) data into DRAM on PP5020, it's ~4.5% faster that way. Closes about half of the performance gap towards PP5022. The (relatively large) buffers for decoded data stay in IRAM, as does the reciprocal table. Clarify some comments.

2010-03-10T21:39:12+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25108 a1c6a512-1295-4272-9138-f99709370657

libdemac: Separate filtering calls per channel in preparation for the dual-core split on PP. This also means less inlining, and hence speeds up decoding on single core slightly, due to better caching behaviour.

2010-03-03T21:20:13+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25005 a1c6a512-1295-4272-9138-f99709370657

Improve libdemac SATURATE slightly on ARMv4/5, move filter buffers and code out of IRAM for sizes that aren't near realtime and extend udiv32_arm reciprocal table.

2010-01-30T02:20:54+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24376 a1c6a512-1295-4272-9138-f99709370657

Fix decoding of stereo frames with silence in only one channel. * Make the standalone decoder contain debugging information.

2008-12-21T23:49:02+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19552 a1c6a512-1295-4272-9138-f99709370657

Fix handling of 8 bit mono and stereo APE files, and also optimise 16 and 24 bit output in the standalone decoder a bit.

2008-12-21T01:29:36+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19517 a1c6a512-1295-4272-9138-f99709370657

Fix APE 16-bit mono output: mono signals need to be scaled for rockbox.

2008-11-30T01:01:04+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19264 a1c6a512-1295-4272-9138-f99709370657

Get rid of unused return values, except the one from decode_chunk() which will be used in the dual core split.

2008-11-26T18:01:18+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19236 a1c6a512-1295-4272-9138-f99709370657

Compile-time choice between 16 bit and 32 bit integers for the filters. 32 bit filters are faster on ARMv4 (with assembler code), so use them there. Nice speedup on PP and Gigabeat F/X.

2008-11-19T00:34:48+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19140 a1c6a512-1295-4272-9138-f99709370657