iecset



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 current IEC958 status in a human-readable form.  When the com-
       mands 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 equivalent with -c 1.

       iecset -x
              Displays the current IEC958 status bits in a style of the  argu-
              ments  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 professional 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@suse.de>



                                  23 Oct 2003                        iecset(1)

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