* media.filename
* media.icon
* media.icon_name
- * media.role video, music, game, event, phone, production, routing, abstract
+ * media.role video, music, game, event, phone, production, filter, abstract
* event.id button-click, session-login
* event.x11.display
* event.x11.xid
* device.bus_path
* device.serial
* device.vendor_product_id
- * device.class sound, modem, monitor
+ * device.class sound, modem, monitor, filter
* device.form_factor laptop-speakers, external-speakers, telephone, tv-capture, webcam-capture, microphone-capture, headset
* device.connector isa, pci, usb, firewire, bluetooth
* device.access_mode mmap, mmap_rewrite, serial