rockbox/apps/codecs/libatrac/atrac3.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

FS#12117: Use more IRAM for atrac3. Speeds up decoding from 1-2% (PP5022, PP5024, S5L870x) to 11% (MCF5250).

2011-05-16T21:47:13+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29892 a1c6a512-1295-4272-9138-f99709370657

Use MEM_ALIGN_ATTR in libatrac3.

2010-11-22T23:41:57+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28643 a1c6a512-1295-4272-9138-f99709370657

Commit FS#11709 by me. Introduces ARMv5E optimized iQMF for atrac3 based on packed multiply instructions. Additionally, improves scheduling on arm9 and arm11 and forces cache alignment of buffers on all targets. Accuracy is slightly reduced, but still greater then 16 bit. Clip+ CPU clock required for LP2 files decreases by 13MHz and ARM11 by 18MHz. No performance or accuracy changes on armv4 or non-arm.

2010-11-10T18:29:29+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28549 a1c6a512-1295-4272-9138-f99709370657

Sync codeclib bitstream code with upstream ffmpeg code. Build ffmpeg_bitstream.c as a part of the codec lib. Use this codeclib implementation in libffmpegFLAC. Implement adapted version of the unaligned longword reading optimization for coldfire from the libwma version of this code. Speeds up cook decoding by 2-3% on h300 and flac by 25% on h300, also speeds up flac decoding by 2% on c200 (decoding speed of cook on c200 is unchanged).

2010-07-15T16:19:17+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27430 a1c6a512-1295-4272-9138-f99709370657

Merge from branches/mdctexp - faster ifft+imdct in codec lib

2010-02-17T00:49:53+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24712 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

"Detach" ATRAC3 from RM. Since ATRAC3 isn't really specific to RM, it must not be obligatory to initialize the decoder through RMContext.

2010-02-16T01:47:22+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24682 a1c6a512-1295-4272-9138-f99709370657

Major optimization of atrac3 codec for Coldfire targets. Moving several number cruncher arrays to IRAM. Decoder is sped up by +50% on h300, decoder now finally is realtime on Coldfire targets as well.

2010-02-15T22:38:01+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24677 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