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 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 equivalent 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.

       -n index
              Specifies the IEC958 control element index, in case you have multiple IEC958 devices and  need  to
              choose one of them.

       -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)