sound 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. Use GConf to store user preferences on streams and so on. Don't enable this flag if you want to use a system wide instance. If unsure, enable this flag. 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. Add support to dev-libs/glib-based mainloop for the libpulse client library, to allow using libpulse on glib-based programs. 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 http://pulseaudio.org/wiki/WhatIsWrongWithSystemMode . Use libasyncns for asynchronous name resolution. Build the doxygen-described API documentation. Makes PulseAudio use RealtimeKit (sys-auth/rtkit) to get real-time priority while running. Enable the equalizer module (requires sci-libs/fftw). Use dev-libs/openssl to provide support for RAOP (AirPort) streaming. 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. 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. Builds a special paravirtualized module for running in a Xen guest. Build with sys-apps/systemd support to replace standalone ConsoleKit.