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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix 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 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages pulseaudio)
+ #:use-module (guix packages)
+ #:use-module (guix download)
+ #:use-module ((guix licenses)
+ #:renamer (symbol-prefix-proc 'l:))
+ #:use-module (guix build-system gnu)
+ #:use-module (gnu packages linux)
+ #:use-module (gnu packages oggvorbis)
+ #:use-module (gnu packages pkg-config)
+ #:use-module (gnu packages avahi)
+ #:use-module (gnu packages glib)
+ #:use-module (gnu packages algebra)
+ #:use-module ((gnu packages autotools) #:select (libtool))
+ #:use-module (gnu packages gdbm)
+ #:use-module (gnu packages m4)
+ #:use-module (gnu packages check)
+ #:export (libsndfile
+ libsamplerate
+ json-c
+ pulseaudio))
+
+(define libsndfile
+ (package
+ (name "libsndfile")
+ (version "1.0.25")
+ (source (origin
+ (method url-fetch)
+ (uri (string-append "http://www.mega-nerd.com/libsndfile/files/libsndfile-"
+ version ".tar.gz"))
+ (sha256
+ (base32
+ "10j8mbb65xkyl0kfy0hpzpmrp0jkr12c7mfycqipxgka6ayns0ar"))))
+ (build-system gnu-build-system)
+ (inputs
+ `(("libvorbis" ,libvorbis)
+ ("libogg" ,libogg)
+ ("flac" ,flac)
+ ("pkg-config" ,pkg-config)))
+ (home-page "http://www.mega-nerd.com/libsndfile/")
+ (synopsis "Reading and writing files containing sampled sound")
+ (description
+ "Libsndfile is a C library for reading and writing files containing
+sampled sound (such as MS Windows WAV and the Apple/SGI AIFF format) through
+one standard library interface.
+
+It was designed to handle both little-endian (such as WAV) and
+big-endian (such as AIFF) data, and to compile and run correctly on
+little-endian (such as Intel and DEC/Compaq Alpha) processor systems as well
+as big-endian processor systems such as Motorola 68k, Power PC, MIPS and
+SPARC. Hopefully the design of the library will also make it easy to extend
+for reading and writing new sound file formats.")
+ (license l:gpl2+)))
+
+(define libsamplerate
+ (package
+ (name "libsamplerate") ; aka. Secret Rabbit Code (SRC)
+ (version "0.1.8")
+ (source (origin
+ (method url-fetch)
+ (uri (string-append "http://www.mega-nerd.com/SRC/libsamplerate-"
+ version ".tar.gz"))
+ (sha256
+ (base32
+ "01hw5xjbjavh412y63brcslj5hi9wdgkjd3h9csx5rnm8vglpdck"))))
+ (build-system gnu-build-system)
+ (inputs `(("pkg-config" ,pkg-config)))
+ (propagated-inputs
+ `(("libsndfile" ,libsndfile)
+ ("fftw" ,fftw)))
+ (home-page "http://www.mega-nerd.com/SRC/index.html")
+ (synopsis "Audio sample rate conversion library")
+ (description
+ "Secret Rabbit Code (aka. libsamplerate) is a Sample Rate Converter for
+audio. One example of where such a thing would be useful is converting audio
+from the CD sample rate of 44.1kHz to the 48kHz sample rate used by DAT
+players.
+
+SRC is capable of arbitrary and time varying conversions; from downsampling by
+a factor of 256 to upsampling by the same factor. Arbitrary in this case means
+that the ratio of input and output sample rates can be an irrational
+number. The conversion ratio can also vary with time for speeding up and
+slowing down effects.
+
+SRC provides a small set of converters to allow quality to be traded off
+against computation cost. The current best converter provides a
+signal-to-noise ratio of 145dB with -3dB passband extending from DC to 96% of
+the theoretical best bandwidth for a given pair of input and output sample
+rates. ")
+ (license l:gpl2+)))
+
+(define json-c
+ (package
+ (name "json-c")
+ (version "0.11")
+ (source (origin
+ (method url-fetch)
+ (uri (string-append "https://s3.amazonaws.com/json-c_releases/releases/json-c-"
+ version ".tar.gz"))
+ (sha256
+ (base32
+ "1324jja19jgsvcz9ij3nf4sgkrf4fg0ilw77vzqls3fw8m8wdpr8"))))
+ (build-system gnu-build-system)
+ (arguments '(#:parallel-build? #f
+ #:parallel-tests? #f))
+ (home-page "https://github.com/json-c/json-c/wiki")
+ (synopsis "JSON implementation in C")
+ (description
+ "JSON-C implements a reference counting object model that allows you to
+easily construct JSON objects in C, output them as JSON formatted strings and
+parse JSON formatted strings back into the C representation of JSON objects.")
+ (license l:x11)))
+
+(define pulseaudio
+ (package
+ (name "pulseaudio")
+ (version "4.0")
+ (source (origin
+ (method url-fetch)
+ (uri (string-append
+ "http://freedesktop.org/software/pulseaudio/releases/pulseaudio-"
+ version ".tar.xz"))
+ (sha256
+ (base32
+ "1bndz4l8jxyq3zq128gzp3gryxl6yjs66j2y1d7yabw2n5mv7kim"))))
+ (build-system gnu-build-system)
+ (arguments
+ '(#:configure-flags '("--localstatedir=/var" ;"--sysconfdir=/etc"
+ "--disable-oss-output")
+ #:phases (alist-cons-before
+ 'check 'pre-check
+ (lambda _
+ ;; 'tests/lock-autospawn-test.c' wants to create a file
+ ;; under ~/.config/pulse.
+ (setenv "HOME" (getcwd)))
+ %standard-phases)))
+ (inputs
+ ;; TODO: Add optional inputs (GTK+?).
+ `(;; ("sbc" ,sbc)
+ ("alsa-lib" ,alsa-lib)
+ ("json-c" ,json-c)
+ ("speex" ,speex)
+ ("libsndfile" ,libsndfile)
+ ("libsamplerate" ,libsamplerate)
+ ("dbus" ,dbus)
+ ("glib" ,glib)
+ ("intltool" ,intltool)
+ ("pkg-config" ,pkg-config)
+ ("m4" ,m4)
+ ("libtool" ,libtool)
+ ("fftw" ,fftw)
+ ("avahi" ,avahi)
+ ("check" ,check)))
+ (propagated-inputs
+ ;; 'libpulse*.la' contain `-lgdbm' and `-lcap', so propagate them.
+ `(;; ("libcap" ,libcap)
+ ("gdbm" ,gdbm)))
+ (home-page "http://www.pulseaudio.org/")
+ (synopsis "Sound server")
+ (description
+ "PulseAudio is a sound server. It is basically a proxy for your sound applications.
+It allows you to do advanced operations on your sound data as it passes
+between your application and your hardware. Things like transferring the
+audio to a different machine, changing the sample format or channel count and
+mixing several sounds into one are easily achieved using a sound server. ")
+
+ ;; PulseAudio is LGPLv2+, but some of the optional dependencies (GNU dbm,
+ ;; FFTW, etc.) are GPL'd, so the result is effectively GPLv2+. See
+ ;; 'LICENSE' for details.
+ (license l:gpl2+)))