rockbox/apps/codecs/libtta
Nils Wallménius c8535f27d1 Switch coldfire builds over to new toolchain using gcc 4.5.2 and binutils 2.20.1
Retune codec compiler optimizations with new compiler. Overall speedup with aac and flac getting big speedups.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29042 a1c6a512-1295-4272-9138-f99709370657
2011-01-12 22:28:43 +00:00
..
filter.h Coldfire assembler implementation of hybrid_filter for libtta. Speeds up decoding on h300 by 4.2MHz. Set svn properties. 2010-07-12 16:14:32 +00:00
filter_arm.S
filter_coldfire.S Coldfire assembler implementation of hybrid_filter for libtta. Speeds up decoding on h300 by 4.2MHz. Set svn properties. 2010-07-12 16:14:32 +00:00
libtta.make Switch coldfire builds over to new toolchain using gcc 4.5.2 and binutils 2.20.1 2011-01-12 22:28:43 +00:00
README
README.rockbox
SOURCES Coldfire assembler implementation of hybrid_filter for libtta. Speeds up decoding on h300 by 4.2MHz. Set svn properties. 2010-07-12 16:14:32 +00:00
ttadec.c Add stdio.h include for SEEK_SET define to various files. 2010-12-25 18:43:34 +00:00
ttadec.h Use more iram in the tta lib, speeds up decoding by 47MHz on h300 (mcf5249) and 2.7MHz on c200v1 (pp5024) 2010-07-12 15:59:11 +00:00
ttalib.h Use more iram in the tta lib, speeds up decoding by 47MHz on h300 (mcf5249) and 2.7MHz on c200v1 (pp5024) 2010-07-12 15:59:11 +00:00

TTA Hardware Players Library
============================

Version 1.2, (c) 2004 Alexander Djourik. All rights reserved.

* Introduction

This library provides to decode a multichannel 8,16 and 24
bits TTA audio files. TTA is a lossless audio format. Being
"lossless" means that no data/quality is lost in the compression
- when uncompressed, the data will be identical to the original.
The compression ratios of TTA depend on the type of music file
being compressed, but the compression size will generally range
between 30% - 70% of the original.

TTA format supports both of ID3v1/v2 tags. Detailed format
description is available at http://www.true-audio.com.

The decoder process has a minimal system requirements and does
not required to create a big additional memory pools. As the
TTA algorithms has a same system requirements both for decoding
and for encoding processes - the TTA recorder can be easily
realized also.

* Changes

  14/04/2004 1.0 Initial release
  16/04/2004 1.1 Code optimization
                 Code clean-up
  29/10/2004 1.2 ID3 tags support
		 Code clean-up

* To Do

  - TTA recorder functions.

* Developers

  Alexander Djourik <ald@true-audio.com>
  Pavel Zhilin <pzh@true-audio.com>

* Copying

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. Neither the name of the True Audio Software nor the names of its
   contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

* See also

Please visit the TTA homepage at http://tta.sourceforge.net for the
latest in news and downloads.