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100 lines
2.6 KiB
Groff
100 lines
2.6 KiB
Groff
.TH iecset 1 "23 Oct 2003"
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.SH NAME
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iecset \- Set or dump IEC958 status bits
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.SH SYNOPSIS
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\fBiecset\fP [\fIoptions\fP] [\fIcmd\fP \fIarg\fP...]
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.SH DESCRIPTION
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\fBiecset\fP is a small utility to set or dump the IEC958 (or so-called
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"S/PDIF") status bits of the specified sound card via ALSA control API.
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When \fBiecset\fP is started without arguments except for options,
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it will show the current IEC958 status in a human-readable form.
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When the commands are given in the arguments, they are parsed
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and the IEC958 status bits are updated. The resultant status is
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shown as well.
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The commands consist of the command directive and the argument.
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As the boolean argument, \fIyes\fP, \fIno\fP, \fItrue\fP, \fIfalse\fI,
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or a digit number is allowed.
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.SH EXAMPLES
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.TP
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.BI iecset\ \-Dhw:1
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Displays the current IEC958 status bits on the second card.
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This is equivalent with \fI-c 1\fP.
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.TP
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.BI iecset\ \-x
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Displays the current IEC958 status bits in a style of the arguments
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for the PCM stream. The output string can be passed to the \fIiec958\fP
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(or \fIspdif\fP) PCM type as the optional argument.
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.TP
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.BI iecset\ pro\ off\ audio\ off
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Sets the current status to the consumer-mode and turns on the
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non-audio bit. The modified status will be shown, too.
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.SH OPTIONS
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.TP
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\fI-D\fP device
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Specifies the device name of the control to open
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.TP
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\fI-c\fP card
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Specifies the card index to open. Equivalent with \fI-Dhw:x\fP.
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.TP
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\fI-x\fP
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Dumps the status in the form of AESx bytes.
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.TP
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\fI-i\fP
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Reads the command sequences from stdin.
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Each line has single command.
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.SH COMMANDS
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.TP
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\fIprofessional\fP <bool>
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The professional mode (true) or consumer mode (false).
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.TP
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\fIaudio\fP <bool>
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The audio mode (true) or non-audio mode (false).
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.TP
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\fIrate\fP <int>
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The sample rate in Hz.
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.TP
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\fIemphasis\fP <int>
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The emphasis: 0 = none, 1 = 50/15us, 2 = CCITT.
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.TP
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\fIlock\fP <bool>
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Rate lock: locked (true), unlocked (false).
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This command is for the professional mode only.
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.TP
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\fIsbits\fP <int>
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Sample bits: 2 = 20bit, 4 = 24bit, 6 = undefined.
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This command is for the professional mode only.
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.TP
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\fIwordlength\fP <int>
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Wordlength: 0 = No, 2 = 22-18 bit, 4 = 23-19 bit, 5 = 24-20 bit, 6 = 20-16 bit.
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This command is for the professional mode only.
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.TP
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\fIcategory\fP <int>
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Category: the value is from 0 to 0x7f.
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This command is for the consumer mode only.
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.TP
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\fIcopyright\fP <bool>
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Copyright: copyrighted (true), non-copyrighted (false).
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This command is for the consumer mode only.
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.TP
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\fIoriginal\fP <boo>
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Original flag: original (true), 1st generation (false).
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This command is for the consumer mode only.
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.SH AUTHOR
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Takashi Iwai <tiwai@suse.de>
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