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                                libcanberra 0.9

   Copyright 2008 Lennart Poettering <mzyvopnaoreen (at) 0pointer (dot)
   de>
     * [1]License
     * [2]News
     * [3]Overview
     * [4]Current Status
     * [5]Documentation
     * [6]Requirements
     * [7]Installation
     * [8]Acknowledgements
     * [9]Download

License

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU Lesser General Public License as published
   by the Free Software Foundation, either version 2.1 of the License, or
   (at your option) any later version.

   This program 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 Lesser
   General Public License for more details.

News

   Tue 9 Sep 2008:

   [10]Version 0.9 released; changes include: GStreamer fixes, include
   (optional) libtdb based lookup cache.

   Thu 28 Aug 2008:

   [11]Version 0.8 released; changes include: new OSS and GStreamer
   backend; portability fixes for FreeBSD/Solaris; the multi backend works
   now

   Thu 14 Aug 2008:

   [12]Version 0.7 released; changes include: documentation updates;
   various bug fixes; add this web site/README; allow playback of event
   sounds with only a sound file path specified; other changes

Overview

   libcanberra is an implementation of the [13]XDG Sound Theme and Name
   Specifications, for generating event sounds on free desktops, such as
   [14]GNOME. It comes with several backends ([15]ALSA, [16]PulseAudio,
   OSS, [17]GStreamer, null) and is designed to be portable. It consists
   of the following parts:
    1. libcanberra: the main library
    2. libcanberra-gtk: some glue code to make it easier to use
       libcanberra from Gtk+ applications
    3. libcanberra-gtk-module: a Gtk+ module that uses libcanberra-gtk to
       trigger input feedback event sounds

   For more information see [18]the original announcement.

Current Status

   libcanberra is mostly feature complete. For now however it includes
   backends only for ALSA, PulseAudio, OSS and GStreamer.

   libcanberra has been declared [19]a blessed GNOME dependency.

   The OSS driver is incomplete: only sound files that are in a format
   natively understood by the sound card are supported. If the sample
   type, channel map or sampling rate of the sound file are not supported
   by the sound card no automatic conversion will take place and the file
   will not be played. Also note that the OSS backend is most likely
   incompatible with OSS4, due to subtle incompatibilities between OSS4
   and the OSS 3.x.

   It is recommended to always take the "shortest" path from libcanberra
   to the audio device. I.e. don't use the GStreamer plugin if libcanberra
   supports the final output target natively. Besides being more
   resource-friendly and less error-prone, some advanced functionality
   might get lost with each layer you add to your stack. For example:
   while you could use libcanberra's Gstreamer backend to output to a
   PulseAudio server this will not be able to make use of sample cacheing
   or will be able to attach additional meta data to the sounds played,
   which might be necessary for effects like positional event sounds.

Documentation

   You may browse the [20]gtkdoc generated [21]programing documentation of
   the API.

Requirements

   Currently, libcanberra is tested on Linux only.

   libcanberra was developed and tested on Fedora Rawhide from August
   2008, it should work on most other Linux distributions (and maybe Unix
   versions) since it uses GNU autoconf and GNU libtool for source code
   configuration and shared library management.

   libcanberra has no dependencies besides the OGG Vorbis development
   headers and whatever the selected backends require. Gtk+ support is
   optional. An optional lookup cache can be used if Samba's tdb trivial
   database is available.

Installation

   As this package is made with the GNU autotools you should run
   ./configure inside the distribution directory for configuring the
   source tree. After that you should run make for compilation and make
   install (as root) for installation of libcanberra.

Acknowledgements

   Marc-AndrĂ© Lureau for the GStreamer backend.

   Joe Marcus Clarke for the OSS backend.

Download

   The newest release is always available from
   [22]http://0pointer.de/lennart/projects/libcanberra/

   The current release is [23]0.9

   Get libcanberra's development sources from the [24]GIT [25]repository
   ([26]gitweb):
git clone git://git.0pointer.de/libcanberra

   If you want to report bugs, have questions or want to be notified about
   new releases, please join the [27]libcanberra-discuss mailing list.
     __________________________________________________________________


    Lennart Poettering <mzyvopnaoreen (at) 0pointer (dot) de>, September
    2008

References

   1. README#license
   2. README#news
   3. README#overview
   4. README#status
   5. README#documentation
   6. README#requirements
   7. README#installation
   8. README#acks
   9. README#download
  10. http://0pointer.de/lennart/projects/libcanberra/libcanberra-0.9.tar.gz
  11. http://0pointer.de/lennart/projects/libcanberra/libcanberra-0.8.tar.gz
  12. http://0pointer.de/lennart/projects/libcanberra/libcanberra-0.7.tar.gz
  13. http://freedesktop.org/wiki/Specifications/sound-theme-spec
  14. http://www.gnome.org/
  15. http://alsa-project.org/
  16. http://pulseaudio.org/
  17. http://gstreamer.org/
  18. http://0pointer.de/blog/projects/sixfold-announcement.html
  19. http://mail.gnome.org/archives/devel-announce-list/2008-August/msg00001.html
  20. http://www.gtk.org/gtk-doc/
  21. http://0pointer.de/lennart/projects/libcanberra/gtkdoc/
  22. http://0pointer.de/lennart/projects/libcanberra/
  23. http://0pointer.de/lennart/projects/libcanberra/libcanberra-0.9.tar.gz
  24. http://git.or.cz/
  25. git://git.0pointer.de/libcanberra
  26. http://git.0pointer.de/?p=libcanberra.git
  27. https://tango.0pointer.de/mailman/listinfo/libcanberra-discuss/