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jack-stdout(1)


NAME

   jack-stdout - write JACK audio data to stdout

SYNOPSIS

   jack-stdout [OPTIONS] port1 [ port2 ...]

DESCRIPTION

   jack-stdout  captures  audio from JACK and writes raw data to standard-
   output.

   The number of given ports detemine the number of  audio  channels  that
   are  used.   If  more  than one channel is given, the audio-sample data
   will be interleaved.

OPTIONS

   -b, --bitdepth BITS
          Specify the bit-depth of each sample. For integer-encoding  this
          can  be 16 or 24.  The default is 16.  This setting is only used
          for integer encoding: Floating-point samples will always  be  32
          bit wide.

   -d, --duration SEC
          Specify the time for which jack-stdout should run in seconds.  A
          value less than 1 means to run indefinitely. The default is 0.

   -e, --encoding FORMAT
          Set the output format of  the  data:  signed-integer,  unsigned-
          integer, floating-point (default: signed)

   -h, --help
          Print a brief usage information

   -L, --little-endian
          Write little-endian data or native-byte-order float (this is the
          default)

   -B, --big-endian
          Output big-endian data or swap the byte-order of floating-point

   -q, --quiet
          Inhibit usual output.   This  affects  information  and  buffer-
          overflow warnings but not setup-errors.

   -S, --bufsize SAMPLES
          Choose  the internal buffer-size in samples. The default size is
          65536.  The given value will be  multiplied  by  the  number  of
          channels and bit-depth to get the size of the ring-buffer.

EXAMPLES

     jack-stdout xmms_0:out_1 xmms_0:out_2 \
     | mono  ~/Desktop/Downloads/JustePort.exe - 10.0.1.6 0

     jack-stdout -b 24 -e unsigned -B system:capture_1 system:capture_2 \
     | sox -t raw -r 48k -e unsigned -b 24 -B -c 2 - /tmp/recording.wav

     jack-stdout system:capture_1 system:capture_2 \
     | oggenc -r -R 48000 -B 16 -C 2 - \
     > /tmp/recording.ogg

     jack-stdout system:capture_1 \
     | oggenc -r -R 48000 -B 16 -C 1 - \
     | oggfwd -p -n "my live stream" localhost 5900 hackme live.ogg

AUTHOR

   Robin Gareus <robin@gareus.org>.

SEE ALSO

   http://jackaudio.org/,

                             29 March 2011                  JACK-STDOUT(1)



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