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+-------------------------------------------------------------------

+Sat Mar 30 21:02:24 UTC 2013 - dap.darkness@gmail.com

+

+- Initial package.

​

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+#

+# spec file for package alac_decoder

+#

+# Copyright (c) 2004 David Hammerton (source)

+# (c) 2013 Perlow Dmitriy A. (spec file)

+#

+# Please submit bugfixes or comments via https://bugs.links2linux.org

+#

+

+Name:           alac_decoder

+Version:        0.2.0

+Release:        0

+License:        MIT

+Summary:        A basic decoder for Apple Lossless Audio Codec files

+Url:            http://craz.net/programs/itunes/alac.html

+Group:          Productivity/Multimedia/Sound/Editors and Convertors

+Source:         http://craz.net/programs/itunes/files/alac_decoder-%{version}.tgz

+Source1:        LICENSE

+

+BuildRequires:  glibc-devel

+BuildRequires:  make

+

+BuildRoot:      %{_tmppath}/build-%{name}-%{version}

+

+%description

+Located here is a basic decoder for Apple Lossless Audio Codec files (ALAC).

+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. 

+

+The program located here will not be able to handle all ALAC files, it can

+only handle mono or stereo files. ALAC allows up to 8 channels. It should be

+trivial to finish the implementation once I find files that I can test it

+with. The ALAC decoder supports both 16 and 24 bit sample sizes. 

+

+The decoder is fairly self explanatory, it can read an ALAC stream from either

+a file or from stdin, and write it as raw PCM data or as a WAV file to either

+stdout or a file. In theory one should be able to stream data to the decoder.

+

+%prep

+%setup -q -n %{name}

+cp %{SOURCE1} .

+

+%build

+make CFLAGS="%{optflags}" %{?_smp_mflags}

+

+%install

+mkdir -p %{buildroot}%{_bindir}

+%{__install} alac %{buildroot}%{_bindir}

+

+%files

+%defattr(-,root,root)

+%doc README LICENSE

+%{_bindir}/alac

+

+%changelog

​

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+Copyright (c) 2004 David Hammerton. 

+ 

+Permission is hereby granted, free of charge, to any person obtaining a copy

+of this software and associated documentation files (the "Software"), to deal

+in the Software without restriction, including without limitation the rights

+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

+copies of the Software, and to permit persons to whom the Software is

+furnished to do so, subject to the following conditions: 

+ 

+The above copyright notice and this permission notice shall be included in

+all copies or substantial portions of the Software. 

+ 

+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR

+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

\ No newline at end of file

​