rockbox/apps/codecs/libwmapro
Andree Buschmann f84cb98b37 Use higher precision for libwmapro's quant_tab[].
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27662 a1c6a512-1295-4272-9138-f99709370657
2010-08-01 22:02:57 +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 Use higher precision for libwmapro's quant_tab[]. 2010-08-01 22:02:57 +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 Maintenance and minor speedup of libwmapro. Comment unused arrays, fix comment, remove tabs and introduce WMAPRO_FRACT to wma.h to remove magic numbers. Swap operands of fixmul16-call for minor speedup on ARM (+1%). 2010-07-29 22:18:04 +00:00
wma.h Maintenance and minor speedup of libwmapro. Comment unused arrays, fix comment, remove tabs and introduce WMAPRO_FRACT to wma.h to remove magic numbers. Swap operands of fixmul16-call for minor speedup on ARM (+1%). 2010-07-29 22:18:04 +00:00
wmapro_math.h libwmapro: fix comment for coldfire fixmul31. 2010-07-30 09:14:28 +00:00
wmapro_mdct.c Make codeclib_misc.h include the asm headers to simplify inclusion magic. 2010-07-29 12:52:04 +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 Maintenance and minor speedup of libwmapro. Comment unused arrays, fix comment, remove tabs and introduce WMAPRO_FRACT to wma.h to remove magic numbers. Swap operands of fixmul16-call for minor speedup on ARM (+1%). 2010-07-29 22:18:04 +00:00
wmaprodec.c Housekeeping for libwmapro. Define some multiple used constants, use more precise value for cos(pi/4). 2010-07-31 21:07:17 +00:00
wmaprodec.h Maintenance and minor speedup of libwmapro. Comment unused arrays, fix comment, remove tabs and introduce WMAPRO_FRACT to wma.h to remove magic numbers. Swap operands of fixmul16-call for minor speedup on ARM (+1%). 2010-07-29 22:18:04 +00:00

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