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senoner |
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<body> |
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<div id="mainwindow"><img name="LinuxSampler" src="gfx/lsbackground.jpg" alt="LinuxSampler"> |
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<h1><span class="hidden">The LinuxSampler Project</span></h1> |
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<table border=0 cellspacing=0 cellpadding=0><tr><th colspan=2 align=left> |
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<img name="h1blank" src="gfx/h1blank.png" alt="blank"><span class="hidden">about</span></th></tr> |
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<tr><td valign=top> |
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<a id="news" href="index.php" onmouseover="javascript:if(document.images)document.news.src = newsover.src" onmouseout="javascript:if(document.images)document.news.src = newsout.src"><img name="news" src="gfx/mnews.png" alt="news"></a> |
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<a id="links" href="links.html" onmouseover="javascript:if(document.images)document.links.src = linksover.src" onmouseout="javascript:if(document.images)document.links.src = linksout.src"><img name="links" src="gfx/mlinks.png" alt="links"></a> |
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<a id="credits" href="credits.html" onmouseover="javascript:if(document.images)document.credits.src = creditsover.src" onmouseout="javascript:if(document.images)document.credits.src = creditsout.src"><img name="credits" src="gfx/mcredits.png" alt="credits"></a> |
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</td><td valign=top width="100%"> |
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<div id="contents"> |
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<h2>FAQ</h2> |
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<p class="default"> |
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Here is a collection of frequently asked questions. Please read them before asking on |
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the mailing list. |
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</p> |
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<h3>linuxsampler? qsampler? libgig? liblscp? hu?</h3> |
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<p class="default"> |
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There are currently four subprojects in the LinuxSampler project; linuxsampler, |
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qsampler, libgig and liblscp. linuxsampler is the core of the sampler, it includes the |
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sampler engines and audio and MIDI drivers. linuxsampler itself is decoupled from any |
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user interface. It offers a network server (LSCP server) to allow to be controlled by |
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schoenebeck |
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an arbitrary user frontend from an arbitrary place over a network connection or |
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senoner |
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locally from the same machine as well. |
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qsampler is the first GUI frontend written for linuxsampler, it is written with the Qt |
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GUI library and thus can be compiled for various architectures and operating systems |
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without modifications on the source code. |
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libgig is a C++ library written for loading Gigasampler files and DLS Level 1 and 2 |
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files. libgig is used by linuxsampler to load Gigasampler files and it <b>can</b> be |
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used by qsampler to retrieve additional informations about Gigasampler files. liblscp |
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is a C library written as a wrapper around the LSCP network protocol, thus to control |
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linuxsampler. It was originally designed to be used on both sides, that is on server / |
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backend side (linuxsampler) and on client / frontend side (e.g. qsampler). But it's now |
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only used on client side by qsampler at the moment. |
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</p> |
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<h3>What do I need to compile and install?</h3> |
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<p class="default"> |
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schoenebeck |
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You should compile and install at least libgig and linuxsampler. As a beginner you should |
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definitely as well compile and install liblscp and qsampler. qsampler is a |
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senoner |
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convenient GUI frontend for linuxsampler. qsampler depends on liblscp, so you have to |
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schoenebeck |
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compile and install liblscp before starting to build qsampler. The recommended order to |
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compile and install is: |
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<ol class="default"> |
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<li>libgig</li> |
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<li>linuxsampler</li> |
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<li>liblscp</li> |
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<li>qsampler</li> |
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</ol> |
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senoner |
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</p> |
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schoenebeck |
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<h3>Compilation of LinuxSampler aborts with ... </h3> |
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<p class="default"> |
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"<code>can't find a register in class `GENERAL_REGS' while reloading `asm'</code>"<br> |
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schoenebeck |
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This is caused by the inline assembly code for SIMD optimization. You currently have to compile LinuxSampler with -O2 or -O3 to avoid this problem. Usually this done by default, if not try: |
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schoenebeck |
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</p> |
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schoenebeck |
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<table class="default" border="0" cellpadding="1" cellspacing="5"> |
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<tr> |
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<td><pre class="code">1 |
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2</pre> |
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</td> |
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<td width="100%"> |
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<pre class="code">CXXFLAGS="-O3" ./configure |
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make</pre> |
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</td> |
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</tr> |
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</table> |
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<p class="default"> |
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Alternatively you could also disable all hand-crafted assembly optimization code by: |
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</p> |
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<table class="default" border="0" cellpadding="1" cellspacing="5"> |
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<tr> |
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<td><pre class="code">1 |
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2</pre> |
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</td> |
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<td width="100%"> |
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<pre class="code">./configure --disable-asm |
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make</pre> |
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</td> |
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</tr> |
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</table> |
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<p class="default"> |
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but the latter is definitely not recommended! |
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</p> |
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schoenebeck |
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senoner |
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<h3>How do I checkout from CVS?</h3> |
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<p class="default"> |
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The procedure of checking out the newest version from CVS is described on the |
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<a href="downloads.html">Downloads</a> site. |
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</p> |
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<h3>How do I compile from CVS?</h3> |
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<p class="default"> |
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The procedure for compiling from CVS is the same for all subprojects, that is no matter |
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schoenebeck |
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if you are compiling linuxsampler, qsampler, libgig or liblscp from CVS, you need to |
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senoner |
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have the autotools (automake, autoconf and libtool) installed and compile it that way: |
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</p> |
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<table class="default" border="0" cellpadding="1" cellspacing="5"> |
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<tr> |
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<td><pre class="code">1 |
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2 |
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3</pre> |
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</td> |
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<td width="100%"> |
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<pre class="code">make -f Makefile.cvs |
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./configure |
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make</pre> |
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</td> |
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</tr> |
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</table> |
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<h3>Can I use linuxsampler without a GUI as well?</h3> |
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<p class="default"> |
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Yes, but unfortunately there is no console based frontend frontend for linuxsampler (yet). |
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You have to write LSCP scripts and send it to the running linuxsampler application. |
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You can send a LSCP script to linuxsampler on the console with the following command: |
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</p> |
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<table class="default" border="0" cellpadding="1" cellspacing="5"> |
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<tr> |
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<td><pre class="code">1</pre> |
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</td> |
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<td width="100%"> |
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<pre class="code">cat yourscript.lscp | netcat -t localhost 8888</pre> |
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</td> |
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</tr> |
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</table> |
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<p class="default"> |
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Of course you can also replace localhost by the IP address of the machine where |
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linuxsampler is running. Alternatively you can also make a telnet connection (port 8888) |
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to linuxsampler's LSCP server and type commands manually. |
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</p> |
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<h3>Are there example LSCP script files somewhere?</h3> |
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<p class="default"> |
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Yes, have a look on the <a href="documentation.html">Documentation</a> site for some |
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common LSCP script examples. For details about LSCP read the |
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<a href="api/draft-linuxsampler-protocol.html">LSCP reference</a>. Be welcome to ask |
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questions for details about LSCP on the mailing list. |
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</p> |
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<a name="dropouts"></a> |
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<h3>I get dropouts (click sounds, noise), what can I do about it?</h3> |
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<p class="default"> |
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In order to achieve good results under Linux you need to have a |
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<a href="http://www.linuxdj.com/audio/lad/resourceslatency.php3">patched kernel</a>. |
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There are different patches available depending on what version (2.4.x or 2.6.x) of kernel you use. |
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The <a href="http://jackit.sourceforge.net/docs/faq.php">JACK FAQ site</a> is also a good resource |
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how to configure a realtime stable kernel. But note; LinuxSampler currently has not support for |
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libcap yet, that means if you are still using a 2.4.x Linux kernel you most probably have to run |
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LinuxSampler with root priviliges (support for libcap is planned though). As a rule of thumb: if |
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you don't get warnings like "cannot mlockall() memory" you are safe to run it as ordinary user as well. |
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</p> |
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</div> |
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</td></tr></table> |
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</div> |
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</body> |
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</html> |
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