rockbox/apps/codecs/libatrac/fixp_math.h, 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

Submit FS#11502. Minor optimization to Coldfire assembler in libatrac's fixmul16(). Thanks to Nils Willménius.

2010-07-28T18:17:56+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27596 a1c6a512-1295-4272-9138-f99709370657

Small changes to asm for better readability.

2010-05-29T14:56:25+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26375 a1c6a512-1295-4272-9138-f99709370657

Add the Rockbox GNU header to some files in libatrac.

2010-02-16T10:35:22+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24692 a1c6a512-1295-4272-9138-f99709370657

Work on atrac Joint Stereo mode. Correct calculation in getChannelWeights(), introduce lookup table and remove obsolete code. Optimize interpolation macro.

2010-02-15T13:00:02+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24665 a1c6a512-1295-4272-9138-f99709370657

Further performance optimization of the atrac3 decoder. Rework the internal sample representation and usage of dsp routines. For now a quick and dirty solution is used to add a fract part of 2 bits. Through this several buffers and functions as well as copy loops could be removed. Furthermore add some ASM for coldfire and place some additional data in IRAM on PP5022/24 and X5/M5. Speedup on ARM: +3%, speedup on Coldfire: +639%. Both ARM and Coldfire can decode in realtime now.

2009-08-30T14:14:22+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22561 a1c6a512-1295-4272-9138-f99709370657

Submit interim version of FS#10565. Performance optimization of atrac3 decoder for ARM. Introduce ASM routines for multiplications and two synthesis loops, refactured parts of synthesis and windowing. Speeds up decoding by a factor of 2.4 on PP502x.

2009-08-29T19:44:27+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22548 a1c6a512-1295-4272-9138-f99709370657

Make those functions actually inline. Around 20% speedup on coldfire, 10% speedup on arm.

2009-08-16T12:41:04+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22344 a1c6a512-1295-4272-9138-f99709370657

Revert the asm fixmul stuff for now.

2009-08-14T17:31:08+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22310 a1c6a512-1295-4272-9138-f99709370657

Call the asm definitions of fixmul functions when possible.

2009-08-13T21:18:30+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22303 a1c6a512-1295-4272-9138-f99709370657