You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
209 lines
8.2 KiB
209 lines
8.2 KiB
<article lang="&language;" id="audiocd">
|
|
<title>audiocd</title>
|
|
<articleinfo>
|
|
<authorgroup>
|
|
<author>&Rik.Hemsley; &Rik.Hemsley.mail;</author>
|
|
<author><personname><firstname>Benjamin</firstname><surname>Meyer</surname></personname></author>
|
|
<!-- TRANS:ROLES_OF_TRANSLATORS -->
|
|
</authorgroup>
|
|
|
|
<date>2004-09-16</date>
|
|
<releaseinfo>2.30.00</releaseinfo>
|
|
|
|
</articleinfo>
|
|
|
|
<para>Allows treating audio <acronym>CD</acronym>s like a
|
|
<quote>real</quote> filesystem, where tracks are represented as files
|
|
and, when copied from the folder, are digitally extracted from the
|
|
<acronym>CD</acronym>. This ensures a perfect copy of the audio
|
|
data.</para>
|
|
|
|
<para>To see how this slave works, insert an audio <acronym>CD</acronym>
|
|
in your &CD-ROM; drive and type <userinput>audiocd:/</userinput> into
|
|
&konqueror;. Within a few seconds you should see a list of tracks and
|
|
some folders.</para>
|
|
|
|
<para>Audio <acronym>CD</acronym>s don't really have folders, but
|
|
the audiocd slave provides them as a convenience. If you look inside
|
|
these folders you will see that they all contain the same number of
|
|
tracks. If you are connected to the Internet, some folders will have
|
|
the actual track titles shown as the filenames.</para>
|
|
|
|
<para>The reason that these separate folders exist are so that you
|
|
can choose in which format you would like to listen to (or copy) the
|
|
tracks on the <acronym>CD</acronym>.</para>
|
|
|
|
<para>If you drag a track from the <filename class="directory">Ogg
|
|
Vorbis</filename> folder and drop it on another &konqueror; window
|
|
open at your home folder, you should see a progress window showing
|
|
you that the track is being extracted from the <acronym>CD</acronym> and
|
|
saved to a file. Note that Ogg Vorbis is a compressed format, so the
|
|
file in your home folder will appear a great deal smaller than it
|
|
would have been if you had copied the raw data.</para>
|
|
|
|
<para>The mechanism behind this is quite simple. When the audiocd slave
|
|
is asked to retrieve a track from the <filename class="directory">Ogg
|
|
Vorbis</filename> folder, it starts extracting the digital audio data
|
|
from the <acronym>CD</acronym>. As it sends the data over to the file in
|
|
your home folder, it simultaneously encodes it in Ogg Vorbis format
|
|
(<acronym>CD</acronym> audio is in an uncompressed format to start
|
|
with).</para>
|
|
|
|
<para>You could also try dragging a file ending in <literal
|
|
role="extension">.wav</literal> and dropping it on the &kde; Media
|
|
Player, &noatun;. In this case, the procedure that happens behind the
|
|
scenes is similar, except that instead of encoding the audio data in Ogg
|
|
Vorbis format, it is put through a very simple conversion, from raw
|
|
binary data (which the <literal role="extension">.cda</literal> files in
|
|
the toplevel folder represent) to <quote>RIFF WAV</quote> format, a
|
|
non-compressed format that most media players understand.</para>
|
|
|
|
<para>&noatun; should quite happily play the <literal
|
|
role="extension">.wav</literal> file, but if it has trouble, you may
|
|
consider using the <option>paranoia_level</option> option, explained
|
|
below.</para>
|
|
|
|
<variablelist>
|
|
<title>Options</title>
|
|
|
|
<varlistentry>
|
|
<term><option>device</option></term>
|
|
<listitem>
|
|
<para>Set the path to the audio <acronym>CD</acronym> device, ⪚
|
|
<userinput>audiocd:/<option>?device</option>=<parameter>/dev/sdc</parameter></userinput>.
|
|
Normally, the slave will try to find a <acronym>CD</acronym> drive with
|
|
an audio <acronym>CD</acronym> inserted, but if it fails or you have
|
|
more than one <acronym>CD</acronym> drive, you may want to try this
|
|
option. Note that the configuration dialog allows you to set a default
|
|
value for this option.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>fileNameTemplate</option></term>
|
|
<listitem>
|
|
<para>Set the file name template, ⪚
|
|
<userinput>audiocd:/<option>?fileNameTemplate</option>=<parameter>Track %{number}</parameter></userinput>. Note that the configuration dialog allows you to set a default value for this option. A warning that if you set it to an empty string no files will show up.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>albumNameTemplate</option></term>
|
|
<listitem>
|
|
<para>Set the album name template, ⪚
|
|
<userinput>audiocd:/<option>?albumNameTemplate</option>=<parameter>%{albumartist} %{albumtitle}</parameter></userinput>. Note that the configuration dialog allows you to set a default value for this option.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>niceLevel</option></term>
|
|
<listitem>
|
|
<para>Sets the process nice level for encoders, ⪚
|
|
<userinput>audiocd:/<option>?albumNameTemplate</option>=<parameter>niceLevel=10</parameter></userinput>. Note that the configuration dialog allows you to set a default value for this option.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>paranoia_level</option></term>
|
|
<listitem>
|
|
<para>Set the amount of error detection and correction used when
|
|
extracting data.</para>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term>Level 0</term>
|
|
<listitem>
|
|
<para>No detection or correction. Only useful if you have a perfect
|
|
<acronym>CD</acronym> drive (unlikely).</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>Level 1</term>
|
|
<listitem>
|
|
<para>Enable basic error checking and correction.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>Level 2</term>
|
|
<listitem>
|
|
<para>Default. Specifies that only a perfect extraction will be
|
|
accepted.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
|
|
<para>Note that there is a disadvantage to level 2. Extraction can be
|
|
very slow, so real-time digital playback may not work properly. If you
|
|
have a good quality <acronym>CD</acronym> drive (note that more
|
|
expensive does not necessarily mean better quality) then you probably
|
|
won't experience very slow extraction, but a poor drive may take days
|
|
(!) to extract the audio from one <acronym>CD</acronym>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>cddbChoice</option></term>
|
|
<listitem>
|
|
|
|
<para>Specify which Internet <acronym>CD</acronym> Database entry to use. Audio
|
|
<acronym>CD</acronym>s don't have track names, but the Internet
|
|
<acronym>CD</acronym> Database is a clever system which uses a special
|
|
unique identifier generated from the number and length of tracks on each
|
|
<acronym>CD</acronym> to cross-reference a track listing. Track listings
|
|
are contributed by the Internet community and made available to
|
|
all. Occasionally there will be multiple entries. You can specify which one to use.</para>
|
|
|
|
<para>You can submit your own track listings using &kscd;, the &kde;
|
|
<acronym>CD</acronym> player.</para>
|
|
|
|
<para>By default audiocd tries to pick the best one.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
|
|
<variablelist>
|
|
<title>Examples</title>
|
|
<varlistentry>
|
|
<term><userinput>audiocd:/?device=/dev/scd0&paranoia_level=0&cddbChoice=0</userinput></term>
|
|
<listitem>
|
|
<para>Gives a listing of the tracks on the audio <acronym>CD</acronym>
|
|
inserted in <filename class="devicefile">/dev/scd0</filename>, which on
|
|
&Linux; specifies the first <acronym>SCSI</acronym> &CD-ROM; device. If
|
|
you copy tracks from the <acronym>CD</acronym>, digital extraction will
|
|
be performed without error correction or detection. The
|
|
<acronym>CDDB</acronym> Database entry 0 will be used.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
|
|
<qandaset>
|
|
<title>Frequently Asked Question</title>
|
|
<qandaentry>
|
|
<question>
|
|
<para>I get <errorname>The file or folder / does not
|
|
exist</errorname>. How do I fix that? I have an audio
|
|
<acronym>CD</acronym> in my drive!</para>
|
|
</question>
|
|
|
|
<answer>
|
|
<para>Try running <userinput><command>cdparanoia</command>
|
|
<option>-vsQ</option></userinput> as yourself (not <systemitem
|
|
class="username">root</systemitem>). Do you see a track list? If not,
|
|
make sure you have permission to access the <acronym>CD</acronym>
|
|
device. If you're using <acronym>SCSI</acronym> emulation (possible if
|
|
you have an <acronym>IDE</acronym> <acronym>CD</acronym> writer) then
|
|
make sure you check that you have read and write permissions on the
|
|
generic <acronym>SCSI</acronym> device, which is probably <filename
|
|
class="devicefile">/dev/sg0</filename>, <filename
|
|
class="devicefile">/dev/sg1</filename>, &etc;. If it still doesn't work,
|
|
try typing <userinput>audiocd:/?device=/dev/sg0</userinput> (or similar)
|
|
to tell kio_audiocd which device your &CD-ROM; is.</para>
|
|
</answer>
|
|
</qandaentry>
|
|
</qandaset>
|
|
|
|
|
|
</article>
|