View source for Phonon/Environment Variables

== Phonon ==
=== PHONON_BACKEND ===
Load a specific backend. The backend name must be the backend plugin name without file extension. For example "phonon_vlc" for the VLC backend. Mind that the backend must be in the Phonon or Qt plugin path.

=== PHONON_DEBUG ===
Set to a value between 0 and 5 to define verbosity of debug output.

=== PHONON_PAINT (QML Branch only) ===
Set to change painting method of VideoGraphicsObject and QML VideoOutput. Can be: 
* ''qpainter'' to force QPainter (will create an RGB32 QImage)
* Only working when a QGLContext is present (i.e. the output/object is in a QGraphicsView with QGLWidget viewport)
** ''glsl'' for GLSL shader painting
** ''glarb'' for GLARB shader painting
** ''qglcontext'' to force painting via context builtin functions (will create an RGB32 QImage)

=== PHONON_PLATFORMPLUGIN ===
Set to the full path of a platform plugin to make it preferred choice over autodetected plugins.

=== PHONON_PULSEAUDIO_DEBUG ===
Set to a value between 0 and 5 to define verbosity of PulseAudio debug output.

=== PHONON_PULSEAUDIO_DISABLE ===
Set to any number to deactivate PulseAudio integration completely. This can also be implicitly achieved by setting QT_NO_GLIB to 1.

== Phonon GStreamer ==
=== PHONON_GST_ALL_EFFECTS ===
Set to C integer boolean to allow listing of '''all''' effect plugins known to GStreamer.

=== PHONON_GST_AUDIOSINK ===
Set to a valid GStreamer audiosink name to force a specific sink (ignored when PulseAudio support is active)

=== PHONON_GST_FPS ===
Set to anything to activate display of frames per second. This only works with videomode software.

=== PHONON_GST_DEBUG ===
Set to value between 0 and 5 to define the verbosity of debug output.

=== PHONON_GST_GST_DEBUG ===
Set to value between 0 and 8 to define the debug level for GStreamer itself.

=== PHONON_GST_VIDEOMODE ===
Forces a painting method on the GStreamer VideoWidget. Can be:
* ''opengl'' only if built with OpenGL support
* ''software'' paint using QPainter and intermediate creation of a QImage
* ''xwindow'' only available on X11, uses X11 overlay painting

=== TEGRA_GST_OPENMAX ===
Activates OpenMAX support on Tegra graphics setups. This only works with ''xwindow'' videomode.

== Phonon VLC ==
=== PHONON_VLC_DEBUG ===
Set to value between 0 and 5 to define the verbosity of debug output. This value is also controlling the libvlc verbosity currently.