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 _______________________________________________ Fink-commits mailing list Fink-commits@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fink-commits