Update of /cvsroot/fink/experimental/beren12/finkinfo/sound
In directory sc8-pr-cvs5.sourceforge.net:/tmp/cvs-serv7797/sound
Added Files:
alac-decoder.info
Log Message:
sync
--- NEW FILE: alac-decoder.info ---
Package: alac-decoder
Version: 0.1.0
Revision: 1
Depends:
Source: http://www.craz.net/programs/itunes/files/alac_decoder-%v.tar.gz
Source-MD5: f554fc11ee41a30bc5baf15a0fd07256
SourceDirectory: alac_decoder
CompileScript: <<
make alac
head -29 alac.c | tail -28 | sed 's/ \* *//' > LICENSE
<<
InstallScript: <<
#!/bin/sh -e
mkdir -p %i/bin
cp alac %i/bin
<<
DocFiles: README LICENSE
Description: Decoder for Apple Lossless Audio Codec files (ALAC)
DescDetail: <<
ALAC is a proprietary lossless audio compression scheme. Apple never released
any documents on the format.
What I provide here is a C implementation of a decoder, written from reverse
engineering the file format. It turns out that most of the algorithms in the
codec are fairly well known. ALAC uses an adaptive FIR prediction algorithm
and stores the error values using a modified rice or golumb algorithm. Further
details are in alac.c.
Although an encoder is not provided, by using the decoder as a sort of
specification it should be fairly trivial to write an encoder. By exploiting
other lossless audio encoders, such as FLAC, the task will be much easier.
Although one wouldn't be able to copy the compression algorithms verbatim, as
adaptive compression is used in ALAC and not in FLAC. There are, however, a
bunch of academic papers on the issue.
<<
License: BSD
Maintainer: Chris Zubrzycki <[EMAIL PROTECTED]>
Homepage: http://packages.debian.org/unstable/devel/po-debconf.html
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