pulseaudio-daemon

USE flags

• alsa - Add support for media-libs/alsa-lib (Advanced Linux Sound Architecture)
• alsa-plugin - Request installing media-plugins/alsa-plugins with PulseAudio plugin enabled. This ensures that clients supporting ALSA only will use PulseAudio.
• aptx - aptX (HD) over Bluetooth (many Android compatible headphones), requires media-plugins/gst-plugins-openaptx.
• asyncns - Use libasyncns for asynchronous name resolution.
• bluetooth - Enable Bluetooth Support
• dbus - Enable dbus support for anything that needs it (gpsd, gnomemeeting, etc)
• elogind - Use sys-auth/elogind for giving each session a PA client
• equalizer - Enable the equalizer module (requires sci-libs/fftw and sys-apps/dbus).
• fftw - Enable the virtual surround sink module (requires sci-libs/fftw).
• gdbm - Use sys-libs/gdbm to store PulseAudio databases. Recommended for desktop usage. This flag causes the whole package to be licensed under GPL-2 or later.
• glib - Build the GSettings PA module.
• gstreamer - Build GStreamer-based RTP protocol module which supports more advanced RTP features like OPUS payload encoding.
• jack - Add support for the JACK Audio Connection Kit
• ldac - LDAC over Bluetooth (primarily Sony headphones), requires media-plugins/gst-plugins-ldac.
• lirc - Add support for lirc (Linux's Infra-Red Remote Control)
• ofono-headset - Build with optional oFono HFP backend for bluez 5, requires net-misc/ofono.
• orc - Use dev-lang/orc for just-in-time optimization of array operations
• oss - Enable OSS sink/source (output/input). Deprecated, upstream does not support this on systems where other sink/source systems are available (i.e.: Linux). The padsp wrapper is now always build if the system supports OSS at all.
• selinux - !!internal use only!! Security Enhanced Linux support, this must be set by the selinux profile or breakage will occur
• sox - Add support for Sound eXchange (SoX)
• ssl - Use dev-libs/openssl to provide support for RAOP (AirPort) streaming.
• system-wide - Allow preparation and installation of the system-wide init script for PulseAudio. Since this support is only supported for embedded situations, do not enable without reading the upstream instructions at https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/WhatIsWrongWithSystemWide/ .
• systemd - Build with sys-apps/systemd support to replace standalone ConsoleKit.
• tcpd - Add support for TCP wrappers
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
• udev - Enable virtual/udev integration (device discovery, power and storage device support, etc)
• valgrind - Enable annotations for accuracy. May slow down runtime slightly. Safe to use even if not currently using dev-util/valgrind
• webrtc-aec - Uses the webrtc.org AudioProcessing library for enhancing VoIP calls greatly in applications that support it by performing acoustic echo cancellation, analog gain control, noise suppression and other processing.
• X - Build the X11 publish module to export PulseAudio information through X11 protocol for clients to make use. Don't enable this flag if you want to use a system wide instance. If unsure, enable this flag.
• zeroconf - Support for DNS Service Discovery (DNS-SD)