foxbox

History

Mohamed Tarek f2ed7ffaaa Enable wmapro compilation for lowmem targets by excluding multichannel buffers for them. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27593 a1c6a512-1295-4272-9138-f99709370657		2010-07-28 14:01:10 +00:00
..
libwmapro.make	libwmapro: build with -O2 for coldfire, 5% speedup.	2010-07-27 06:48:15 +00:00
mdct_tables.c	Submit part of FS#11498. Major speedup for WMA Professional on ARM and Coldfire CPUs. Introduce asm routines for multiplications, move arrays with major impact on decoding speed to IRAM. Speeds up decoding by 25% on PP5022 and 34% on mcf5249.	2010-07-26 21:43:07 +00:00
mdct_tables.h	Partial conversion of the wmapro decoder to fixed point arithmetic. Currently inverse quantization & rescaling,	2010-07-05 22:33:37 +00:00
quant.h	Increase the size of quant table in libwmapro to accomodate more values for exp. Fixes wma pro failure on test files in download.rockbox.org/test_files.	2010-07-17 09:13:55 +00:00
README.rockbox	libwmapro no longer needs libm in the sim; update the makefile and README.rockbox.	2010-07-17 08:19:05 +00:00
SOURCES	More cleaning for libwmapro; use codeclib's bitstream functions and drop those from the libwmapro.	2010-07-17 07:53:14 +00:00
wma.c	libwmapro : remove dead/unneeded code from wma.[ch]	2010-07-17 08:09:17 +00:00
wma.h	libwmapro : remove dead/unneeded code from wma.[ch]	2010-07-17 08:09:17 +00:00
wmapro_math.h	libwmapro: tiny tweak fo coldfire fixmul24 for a very slight speedup.	2010-07-27 06:30:38 +00:00
wmapro_mdct.c	wmapro: don't force little endianness	2010-07-14 20:19:50 +00:00
wmapro_mdct.h	Partial conversion of the wmapro decoder to fixed point arithmetic. Currently inverse quantization & rescaling,	2010-07-05 22:33:37 +00:00
wmaprodata.h	Remove the floating point code from wmaprodec.c and change variable names accordingly.	2010-07-14 17:55:17 +00:00
wmaprodec.c	Enable wmapro compilation for lowmem targets by excluding multichannel buffers for them.	2010-07-28 14:01:10 +00:00
wmaprodec.h	Modify the wma pro decoder to produce non-interleaved samples, and work directly on the buffers in WMAProDecCtx instead to avoid the redundant copying of the output data. ~10% speedup (-2MHz) on pp502x and ~1.5% speedup (-3.8Mhz)	2010-07-26 22:03:20 +00:00

README.rockbox

Library: libwmapro
Imported: 2010-04-30 by Mohamed Tarek

This set of files form the files needed from ffmpeg's libavcodec and libavutil
to build a standalone wma professional decoder.

LICENSING INFORMATION

ffmpeg is licensed under the Lesser GNU General Public License and the file
wmaprodec.c is copyright (c) 2007 Baptiste Coudurier, Benjamin Larsson, Ulion
and copyright (c) 2008 - 2009 Sascha Sommer, Benjamin Larsson.

IMPORT DETAILS

Based on ffmpeg svn r22886 dated 15 April 2010.

The decoder now (17 July 2010) uses fixed point arithmetic everywhere. It still
doesn't work on 3 targets, namely clip, c200v2 and m200v4 due to their small 
codec buffer compared to wma pro's needs. 

A comparison against ffmpeg floating point decoder gives :
0.2~0.3%  max relative error
0.005~0.01% average relative error