Speak Freely for Unix: sflaunch

by John Walker

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User Commands                                         sflaunch(1)

     sflaunch - Speak Freely mike and speaker launcher

     sflaunch [ -dqu ] [ -yindev[:ctldev] ] [ -both
          mike_and_speaker_options... ] [ -launch
          more_launch_options... ] [ -mike mike_options... ] [
          -speaker speaker_options... ] [ hostname[:port] ] [
          soundfile ... ]

     sflaunch was created as a  work-around  for  audio  drivers,
     even some full-duplex, which do not permit two separate pro-
     grams such as sfmike and sfspeaker to independently open the
     audio  device,  notwithstanding  one  program's  opening  it
     read-only and the other write-only.  sflaunch opens the  au-
     dio  device  in  read/write  mode,  then  spawns  two  child
     processes in which sfmike and sfspeaker are executed,  pass-
     ing  the  open audio file descriptors to each via the -y op-
     tion supported by both programs, along with  whatever  argu-
     ments  were  specified for each program on the sflaunch com-
     mand line.

     sflaunch may be used on any platform, even those without the
     restriction which motivated its creation; you may find using
     it more convenient  than  manually  starting  sfspeaker  and

     -both     The options which follow are passed to both sfmike
               and  sfspeaker  on  their  command lines.  This is
               particularly  handy  when  specifying   encryption

     -d        Enables debug output.

     -launch or -sflaunch
               The options which follow are processed by sflaunch
               rather  than  being passed to sfmike or sfspeaker.
               This is the default, and as long as you place  all
               sflaunch options before the first -mike or -speak-
               er option you never need to use  the  -launch  op-
               tion.  It is provided as a convenience for scripts
               which wish to assemble sflaunch  commands  without
               paying attention to the order in which options are

     -mike or -sfmike
               The options which follow are passed to sfmike when
               it  is  invoked.   Note that destination and sound
               file arguments are automatically passed to  sfmike
               and need not be preceded by this option.

     -q        When a connection  is  closed,  sflaunch  normally
               prompts  the  user to open another connection.  If
               the -q option is specified, sflaunch exits at  the
               end of first connection, terminating sfspeaker and
               returning to the shell prompt.

     -speaker or -sfspeaker
               The options which follow are passed  to  sfspeaker
               when it is invoked.  You may switch back and forth
               between directing options to sfmike and  sfspeaker
               as many times as you wish.

     -u        Prints how-to-call information.

               This option allows you to  override  the  defaults
               for  the  name of the audio input device file (for
               example /dev/audio)  and,  optionally,  the  audio
               control  device  file,  specified  after the input
               device, separated by a colon.

     sfmike(1), sfspeaker(1)

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by John Walker
September 18, 1999