Provided by: oss4-base_4.2-build2005-2ubuntu1_i386 bug


       oss_userdev - OSS client/server audio pseudo device.


       This  audio  device  is  not designed to be used as-is by the users. It
       requires a specially designed server application  that  implements  the
       actual  service  (please see the OSS programming documentation for more
       info). The server application will then create the audio  devices  that
       can be used to record and/or play audio.


       The oss_userdev driver is a special purpose loop back audio device that
       can be used when implementing OSS  audio  devices  based  on  a  server
       running in the background.


       ยท  userdev_visible_clientnodes=0|1  By default (0) common client device
          node (/dev/oss/oss_userdev0/client) will be created for  all  server
          instances.  The clients will then get directed to the right instance
          based on some search criteria (for example UID). This alternative is
          best  when  using  single  server  application  that can serve large
          number of different sesions.

       If this option is set to 1 then OSS will create separate client  device
       nodes  for  each  instance.  Applications  will  have to open the right
       device nodes. This alternative is best  when  oss_userdev  is  used  to
       create  different  kind  of  services  in  one  system. In this way for
       example a VoIP link can be accessed by opening a different device  node
       than when opening some other service.


              Device configuration file.


       4Front Technologies

                               05 February 2012                 oss_userdev(7)