[gstreamer-bugs] [Bug 329106] New: HAL sound device wrapper plugins

[GStreamer (bugzilla.gnome.org)]

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 GStreamer | gst-plugins-good | Ver: HEAD CVS

           Summary: HAL sound device wrapper plugins
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: j at bitron.ch
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unversioned Enhancement
   GNOME milestone: Unspecified


It's currently not possible to specify one specific ALSA device in a pipeline
such that the same pipeline is guaranteed to work across machine reboots. The
problem is that ALSA card numbers are generated on each system startup. The
result depends on the random order of which kernel module gets loaded first.
When hotplugging USB audio devices, the card number changes may even happen
without machine reboots.

I propose to use HAL's UDI (Unique Device Id) as persistent ALSA sound device
identifier. A patch to make HAL's UDI independent of ALSA's card number has
already been committed to HAL CVS HEAD.

Patch will follow soon. This bug is part of my sound configuration patches to
allow sane graphical selection of sound cards in GNOME.


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