iecset - phpMan

iecset(1)                                                            iecset(1)



NAME
       iecset - Set or dump IEC958 status bits


SYNOPSIS
       iecset [options] [cmd arg...]


DESCRIPTION
       iecset  is a small utility to set or dump the IEC958 (or so-called "S/PDIF") status
       bits of the specified sound card via ALSA control API.

       When iecset is started without arguments except for options, it will show the  cur-
       rent  IEC958  status  in a human-readable form.  When the commands are given in the
       arguments, they are parsed and the IEC958 status bits are updated.   The  resultant
       status is shown as well.

       The  commands  consist  of  the command directive and the argument.  As the boolean
       argument, yes, no, true, false, or a digit number is allowed.


EXAMPLES
       iecset -Dhw:1
              Displays the current IEC958 status bits on the second card.  This is equiva-
              lent with -c 1.

       iecset -x
              Displays  the current IEC958 status bits in a style of the arguments for the
              PCM stream.  The output string can be passed to the iec958  (or  spdif)  PCM
              type as the optional argument.

       iecset pro off audio off
              Sets the current status to the consumer-mode and turns on the non-audio bit.
              The modified status will be shown, too.


OPTIONS
       -D device
              Specifies the device name of the control to open

       -c card
              Specifies the card index to open.  Equivalent with -Dhw:x.

       -x     Dumps the status in the form of AESx bytes.

       -i     Reads the command sequences from stdin.  Each line has single command.


COMMANDS
       professional <bool>
              The professional mode (true) or consumer mode (false).


       audio <bool>
              The audio mode (true) or non-audio mode (false).


       rate <int>
              The sample rate in Hz.


       emphasis <int>
              The emphasis: 0 = none, 1 = 50/15us, 2 = CCITT.


       lock <bool>
              Rate lock: locked (true), unlocked (false).  This command is for the profes-
              sional mode only.


       sbits <int>
              Sample  bits:  2 = 20bit, 4 = 24bit, 6 = undefined.  This command is for the
              professional mode only.


       wordlength <int>
              Wordlength: 0 = No, 2 = 22-18 bit, 4 = 23-19 bit, 5 = 24-20 bit, 6  =  20-16
              bit.  This command is for the professional mode only.


       category <int>
              Category:  the  value  is  from 0 to 0x7f.  This command is for the consumer
              mode only.


       copyright <bool>
              Copyright: copyrighted (true), non-copyrighted (false).  This command is for
              the consumer mode only.


       original <boo>
              Original flag: original (true), 1st generation (false).  This command is for
              the consumer mode only.


AUTHOR
       Takashi Iwai <tiwai AT suse.de>



                                  23 Oct 2003                        iecset(1)

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