On Classic, IRAM1 (second 128Kb of a total of 256KB available IRAM) is
slower than DRAM. Codecs that actually are using regions of IRAM1 runs
faster when DRAM is used, so IRAM1 is disabled and only IRAM0 remains
enabled: 48KB for core and 80KB for codecs/plugins.
The next test_codec results shows how decode time is decreased:
file boosted unboosted
*.ra ~1.5% ~0.5%
*.mpc ~21% ~4.5%
*.ogg ~0.5% ~0%
nero_he*.m4a ~8% ~1%
nero*.m4a ~25% ~7%
wmapro*.wma ~4.5% ~0%
wma*.wma ~25% ~7%
In addition there is a small power save when IRAM1 HW is disabled.
Change-Id: I102adee11458e82037f23076d5d5956e23235de8
Freeware Advanced Audio (AAC) Decoder including SBR decoding
http://www.audiocoding.com/
FAAD2 is a HE, LC, MAIN and LTP profile, MPEG2 and MPEG-4 AAC decoder.
FAAD2 includes code for SBR (HE AAC) decoding.
FAAD2 is licensed under the GPL.
__________
COPYRIGHTS
For FAAD2 the following license applies:
******************************************************************************
** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
** Copyright (C) 2003 M. Bakker (mbakker(at)nero.com), Ahead Software AG
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
**
** Commercial non-GPL licensing of this software is also possible.
** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
******************************************************************************
Please note that the use of this software may require the payment of
patent royalties. You need to consider this issue before you start
building derivative works. We are not warranting or indemnifying you in
any way for patent royalities! YOU ARE SOLELY RESPONSIBLE FOR YOUR OWN
ACTIONS!
______
PEOPLE
FAAD2 is written by:
- M. Bakker (mbakker(at)nero.com).
_______________
VERSION HISTORY
Sorry, try building a ChangeLog from CVS.
__________________________________
REDISTRIBUTED OPEN SOURCE PACKAGES
This is the list of redistributed open source packages that are included
in FAAD2:
Name: mp4v2
Version: 0.9.8.6
Origin: http://www.mpeg4ip.net
Author: David Mackie
Directory: common/mp4v2
License: MPL, Mozilla Public License, version 1.1
Name: mp4av
Version: 0.9.8.6
Origin: http://www.mpeg4ip.net
Author: David Mackie
Directory: common/mp4av
License: MPL, Mozilla Public License, version 1.1
___________________
DIRECTORY STRUCTURE
faad2 - top level directory.
aacDECdrop - windows decoder/player with drag'n'drop functionality
common - generally used libraries and code.
faad - general common functions like filereading and streaming
as well as getting info from aac files.
mp4v2 - MPEG-4 file reading library.
mp4av - MPEG-4 file general function library.
mp4ff - Small MP4 file format library (includes tagging abilities).
CoreAAC - AAC DirectShow filter.
frontend - command line frontend to the FAAD2 library, also supports
MPEG-4 file decoding.
include - inlude file for the FAAD2 library.
libfaad - the FAAD2 AAC decoder library including SBR.
codebook - Huffman codebooks
plugins - plugins for all kinds of pograms.
in_mp4 - winamp MPEG-4 AAC file input plugin.
QCD - Quintessential player AAC plugin.
QCDMp4 - Quintessential player MP4 plugin.
winamp - winamp2 AAC input plugin.
winamp3 - winamp3 AAC input plugin.
xmms - xmms AAC plugin
mpeg4ip - plugin for the mpeg4ip player
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