Manual: iecset

iecset(1)					   General Commands Manual					   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-read‐
       able  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 
	      The professional mode (true) or consumer mode (false).

       audio 
	      The audio mode (true) or non-audio mode (false).

       rate 
	      The sample rate in Hz.

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

       lock 
	      Rate lock: locked (true), unlocked (false).  This command is for the professional mode only.

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

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

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

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

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

AUTHOR
       Takashi Iwai 

							 23 Oct 2003						   iecset(1)