Libcanberra

Libcanberra is a simple abstract interface for playing event sounds. It implements the XDG Sound Theme and Naming Specifications for generating event sounds on free desktops, such as GNOME. Further description here

Installation

Libcanberra can be installed with the package libcanberra. libcanberra no longer requires any backends for ALSA, pulseaudio or gstreamer, as they are now built in to the libcanberra package.

It is necessary to install a sound theme in order to hear any event sound:

The default sound theme is 'freedesktop', which can be installed with the package sound-theme-freedesktop.
Alternatively, search for "sound-theme" in the official repositories or the Arch User Repository.

Configuration

By default, the GTK module is loaded automatically when a GTK application launched. You can overwrite the default settings in the user's GtkSettings file:

$HOME/.gtkrc-2.0 and $XDG_CONFIG_HOME/gtk-3.0/settings.ini

gtk-enable-event-sounds=true
gtk-enable-input-feedback-sounds=true
gtk-sound-theme-name=freedesktop

In GNOME, these settings are managed by gnome-settings-daemon, and the configuration is available in GSettings under the org.gnome.desktop.sound schema.

systemd

To enable bootup, shutdown and reboot sounds using canberra, enable canberra-system-bootup.service.

Usage in programming

This article or section is being considered for removal.

Reason: API reference pages are out of scope. (Discuss in ArchWiki talk:Maintenance Team#Dealing with API reference pages)

You can write your own libcanberra sound events easily in many programming languages using GSound through GObject-Introspection, or you can simply use bash.

Bash

Dependency: libcanberra

hello_world.sh

#!/bin/bash
canberra-gtk-play -i phone-incoming-call -d "hello world"

C

Dependency: libcanberra
Build with: gcc -o hello_world `pkg-config --cflags --libs glib-2.0 libcanberra` hello_world.c

hello_world.c

#include <glib.h>
#include <canberra.h>
int main () {
	ca_context * hello;
	ca_context_create (&hello);
	ca_context_play (hello, 0,
		CA_PROP_EVENT_ID, "phone-incoming-call",
		CA_PROP_EVENT_DESCRIPTION, "hello world",
		NULL);
	g_usleep (2000000);
	return 0;
}

Dependency: gsound
Build with: gcc -o hello_world `pkg-config --cflags --libs glib-2.0 gsound` hello_world.c

hello_world.c

#include <glib.h>
#include <gsound.h>
int main () {
	GSoundContext *hello = gsound_context_new(NULL, NULL);
	gsound_context_play_simple(hello, NULL, NULL,
		GSOUND_ATTR_EVENT_ID, "phone-incoming-call",
		GSOUND_ATTR_EVENT_DESCRIPTION, "hello world",
		NULL);
	g_usleep (2000000);
	return 0;
}

Genie

Dependency: libcanberra
Makedependency: vala
Build with: valac --pkg libcanberra hello_world.gs

hello_world.gs

uses
	Canberra
init
	hello: Context
	Context.create(out hello)
	hello.play (0,
		PROP_EVENT_ID, "phone-incoming-call",
		PROP_EVENT_DESCRIPTION, "hello world")
	Thread.usleep (2000000)

Dependency: gsound
Makedependency: vala
Build with: valac --pkg gsound hello_world.gs

hello_world.gs

uses
	GSound
init
	var hello = new GSound.Context
	hello.init()
	hello.play_simple(null,
		GSound.Attribute.EVENT_ID, "phone-incoming-call",
		GSound.Attribute.EVENT_DESCRIPTION, "hello world")
	Thread.usleep (2000000)

JavaScript

Dependencies: gsound, gjs

hello_world.js

#!/usr/bin/gjs
const GLib = imports.gi.GLib;
const GSound = imports.gi.GSound;

let hello = new GSound.Context();
hello.init(null);
hello.play_simple({ "event.id" : "phone-incoming-call", 
                    "event.description" : "hello world" }, null);
GLib.usleep (2000000);

Lua

Dependencies: gsound, lua-lgi-git^AUR

hello_world.lua

#!/usr/bin/lua
lgi = require 'lgi'
GLib = lgi.require('GLib')
GSound = lgi.require('GSound')

hello = GSound.Context()
hello:play_simple({ [GSound.ATTR_EVENT_ID] = "phone-incoming-call",
                    [GSound.ATTR_EVENT_DESCRIPTION] = "hello world" })
GLib.usleep (2000000)

Perl

Dependencies: gsound, perl-glib-object-introspection

hello_world.pl

#!/usr/bin/perl
use Glib::Object::Introspection;
Glib::Object::Introspection->setup (
	basename => 'GSound',
	version => '1.0',
	package => 'GSound');
my $hello = GSound::Context->new;
$hello->play_simple({ "event.id" => "phone-incoming-call",
                      "event.description" => "hello world" });
sleep (2);

Python

Dependencies: gsound, python-gobject

hello_world.py

#!/usr/bin/python
import gi
gi.require_version('GSound', '1.0')
from gi.repository import GLib, GSound

hello = GSound.Context()
hello.init()
hello.play_simple({GSound.ATTR_EVENT_ID: "phone-incoming-call",
                   GSound.ATTR_EVENT_DESCRIPTION: "hello world"})
GLib.usleep(2000000)

Ruby

Dependencies: gsound, ruby-gir_ffi^AUR^{[broken link: package not found]}

hello_world.rb

#!/usr/bin/ruby
require 'gir_ffi'
GirFFI.setup :GSound
Hello = GSound::Context.new
Hello.play_simple("event.id" => "phone-incoming-call", 
                  "event.description" => "hello world")
sleep (2)

Vala

Dependency: libcanberra
Makedependency: vala
Build with: valac --pkg libcanberra hello_world.vala

hello_world.vala

using Canberra;
public class HelloWorld {
	static void main () {
	Context hello;
	Context.create(out hello);
	hello.play (0,
		PROP_EVENT_ID, "phone-incoming-call",
		PROP_EVENT_DESCRIPTION, "hello world");
	Thread.usleep (2000000);
	}
}

Dependency: gsound
Makedependency: vala
Build with: valac --pkg gsound hello_world.vala

hello_world.vala

using GSound;
public class HelloWorld {
	static void main () {
	var hello = new GSound.Context();
	hello.init();
        hello.play_simple(null,
		GSound.Attribute.EVENT_ID, "phone-incoming-call",
		GSound.Attribute.EVENT_DESCRIPTION, "hello world");
	Thread.usleep (2000000);
	}
}