read_cdda.1

读取音乐光盘磁道为磁盘文件的程序

.TH READ_CDDA 1 "Version 2.05"
.SH NAME
read_cdda \- read Audio CD tracks via the SCSI interface
.SH SYNOPSIS
.B read_cdda 
[-h] [-a] [-8] [-b blks] [-d] [-t] [-D dev] [-s start] [-e end]
.B track
[outfile]
.SH DESCRIPTION
.B read_cdda
reads an audio track from the CD and stores it in the
named file, or standard output.  

The current version supports \fIjitter\fR control which will correct
some synchronisation errors (which show up as crackles and pops in the
output)

The program also has options to specify the starting and ending second
to record. (useful for cutting out the 10 minute "blanks" at the end
of songs that some groups like to add)

It only works under Solaris 2.4 and higher (older
versions don't support CDDA) and it only works with CD-ROM's that
support CDDA which according to the \fIworkman(1)\fR docs are:
.nf
 
     * SunCD 12 (See notes)
     * SunCD Plus (really a Toshiba 3401)
     * Sun SPARCstation internal drive (really a Toshiba 4101)
     * Toshiba 3401
     * Toshiba 3501
     * Toshiba 4101

.fi 
I have only tested it on the Sun SPARCstation 5, 20, and Ultra
internal drives.  You need to have read access to the CDROM device. If
volume management is running,
.B read_cdda
will read from /vol/dev/aliases/cdrom0, otherwise from the raw disk
device /dev/rdsk/c0t6d0s2.  Alternately you can specify the device
directly.
.PP 
By default 
.B read_cdda
outputs CDR format - suitable for writing to a CD
Recorder to create your own CD. (I've made a number of mixed CD's)
Again I've only tested this by writing CD's on a Phillips CDD 522
attached to a linux box - but, in theory, it shouldn't matter :^)
It can also output in Sun .au format (both 8bit mono and 16bit stereo)
which is useful for testing without having to write a CD.
.RSH OPTIONS
.TP 16
.B \-t, \--toc
Only print out the Table of Contents
.TP
.B track           
Track number to read
.TP
.B file         
File name for PCM (CDR) or .au output. If the file is "-" then output
is to standard output.
.TP
.B \-s, \--start     
Starting second for the track.
.TP
.B \-e, \--end       
Ending second for the track.
.TP
.B \-t, \--toc       
Only print out the Table of Contents.
.TP
.B \-x, \--swap      
Swap bytes (for x86?)
.TP
.B \-8, \--au8       
Output in Sun .au format 8KHz.
.TP
.B \-a, \--au16      
Output in Sun .au format 44.1KHz.
.TP
.B \-v, \--verbose   
Be talkative while running.
.TP
.B \-d, \--drvtype   
Print CD-ROM model type only.
.TP
.B \-D, \--device
Device to read from.
.TP
.B \-b, \--buffer
Size of read-ahead buffer.  You should not need to change this but there is a
small chance this can fix up problems with some drive/machine combinations.
.B \-V, \--version   
Print program version number only.

.SH NOTES
Let me know of any problems you have.  Version 1 has been used by
quite a few people successfully.  Version 2 is much newer and
therefore not real well tested by it does work for me.  One final
note: I know the packaging is a bit excessive for a relatively small
program, but believe it or not, its easier for me as I just have a
script that sets it up.

When I use the 12x CDROM in our Ultra I still get occasionally
crackle or pop even with the jitter control.  I've confirmed this
with other CDDA readers too.

You must have read access to the CDROM device.

If writing to the disk falls behind reading from the CDROM then you will
get a corrupted file. (usually not a problem unless you are writing
over a congested network)

The speed of reading depends on the drive type.  The internal CDROMs in
our SPARC 20s read at 1x speed.  The 12 speed CDROMs in our Ultras read
at 4x speed.

You can't query the drive type if there is no CD in the drive, or if you
are using volume management.

This probably won't work under Solaris for x86, but there is an options
to swap the bytes which might enable it to work.

.SH CREDITS
This program was written by Jim Mintha ([e-mail]) and is
covered by the GNU Public License. (See the file LICENSE in this
directory)
.PP
Much of this work was derived from the \fIworkman(1)\fR sources written by
Steven Grimm ([e-mail]), and he deserves much credit for 
figuring out how Sun's CDDA works, not to mention writing the great 
program Workman.

I figured out how to do jitter control from Zlatko Calusic
<[e-mail]> and Gilles Boccon-Gibod <[e-mail]>
Many thanks to them.

Also thanks to Alexander V. Panasyuk, Hans Werner Strube, Andreas
Karrer for various fixes and patches.