| 124 |
<h2>FAQ</h2> |
<h2>FAQ</h2> |
| 125 |
<p class="default"> |
<p class="default"> |
| 126 |
Here is a collection of frequently asked questions. Please read them before asking on |
Here is a collection of frequently asked questions. Please read them before asking on |
| 127 |
the mailing list. |
the mailing list.<br> |
| 128 |
|
<ol class="default"> |
| 129 |
|
<li> |
| 130 |
|
<a href="#commercial_products">Can I use LinuxSampler in commercial hardware or software products?</a> |
| 131 |
|
</li> |
| 132 |
|
<li> |
| 133 |
|
<a href="#commercial_music">Can I use LinuxSampler for commercial music production?</a> |
| 134 |
|
</li> |
| 135 |
|
<li> |
| 136 |
|
<a href="#open_source">LinuxSampler is not open source, you are evil!</a> |
| 137 |
|
</li> |
| 138 |
|
<li> |
| 139 |
|
<a href="#aga">linuxsampler? qsampler? jsampler? libgig? liblscp? jlscp? ... hu?</a> |
| 140 |
|
</li> |
| 141 |
|
<li> |
| 142 |
|
<a href="#install">What do I need to compile and install?</a> |
| 143 |
|
</li> |
| 144 |
|
<li> |
| 145 |
|
<a href="#compilarion_error">Compilation of LinuxSampler aborts with ...</a> |
| 146 |
|
</li> |
| 147 |
|
<li> |
| 148 |
|
<a href="#cvs_checkout">How do I checkout from CVS?</a> |
| 149 |
|
</li> |
| 150 |
|
<li> |
| 151 |
|
<a href="#compile_cvs">How do I compile from CVS?</a> |
| 152 |
|
</li> |
| 153 |
|
<li> |
| 154 |
|
<a href="#no_gui">Can I use linuxsampler without a GUI as well?</a> |
| 155 |
|
</li> |
| 156 |
|
<li> |
| 157 |
|
<a href="#examples_lscp">Are there example LSCP script files somewhere?</a> |
| 158 |
|
</li> |
| 159 |
|
<li> |
| 160 |
|
<a href="#dropouts">I get dropouts (click sounds, noise), what can I do about it?</a> |
| 161 |
|
</li> |
| 162 |
|
</ol> |
| 163 |
</p> |
</p> |
| 164 |
<h3>Can I use LinuxSampler in commercial hardware or software products? </h3> |
|
| 165 |
|
<a name="commercial_products"></a> |
| 166 |
|
<h3>Can I use LinuxSampler in commercial hardware or software products?</h3> |
| 167 |
<p class="default"> |
<p class="default"> |
| 168 |
You are NOT ALLOWED to use LinuxSampler source code, libraries or applications in |
You are NOT ALLOWED to use LinuxSampler source code, libraries or applications in |
| 169 |
COMMERCIAL hardware or software products without prior written authorization by the |
COMMERCIAL hardware or software products without prior written authorization by the |
| 170 |
<a href="developers.html">authors</a>. <A HREF="downloads.html">See here</A> |
<a href="developers.html">authors</a>. <A HREF="downloads.html">See here</A> |
| 171 |
|
</p> |
| 172 |
|
|
| 173 |
|
<a name="commercial_music"></a> |
| 174 |
|
<h3>Can I use LinuxSampler for commercial music production?</h3> |
| 175 |
|
<p class="default"> |
| 176 |
|
Hell, yes! Every indirect commercial usage of LinuxSampler, which essentially means |
| 177 |
|
using its audio output, can of course be used in commercial applications like music |
| 178 |
|
productions, live shows, etc. Don't get us wrong, with the mentioned commercial |
| 179 |
|
exception we don't want to restrict the normal user / musician, we just want to avoid |
| 180 |
|
somebody to directly make money with our work, that is by selling our software in a |
| 181 |
|
sampler product like a sampler + sample library bundle, a hardware sampler or |
| 182 |
|
something equivalent, at least not without giving something back to the open source |
| 183 |
|
Community. |
| 184 |
|
</p> |
| 185 |
|
|
| 186 |
<h3>linuxsampler? qsampler? libgig? liblscp? hu?</h3> |
<a name="open_source"></a> |
| 187 |
|
<h3>LinuxSampler is not open source, you are evil!</h3> |
| 188 |
<p class="default"> |
<p class="default"> |
| 189 |
There are currently four subprojects in the LinuxSampler project; linuxsampler, |
There are of course many definitions of the term "open source", but according to the |
| 190 |
qsampler, libgig and liblscp. linuxsampler is the core of the sampler, it includes the |
<a href="http://en.wikipedia.org/wiki/Open_source">definition on Wikipedia</a> |
| 191 |
|
LinuxSampler is in fact open source, since you've got complete access to its source |
| 192 |
|
code. So due to this fact, a normal user / musician is free to do with LinuxSampler |
| 193 |
|
what he likes to do, he can even adjust and tweak every single part of the software |
| 194 |
|
by modifying and compiling its source code. And just the fact that we want to avoid |
| 195 |
|
our work to be directly exploited in commercial software or hardware products is |
| 196 |
|
definitely not an "evil" intention. For the normal user / musician the commercial |
| 197 |
|
restriction is even an advantage, since that way commercial actors are forced to |
| 198 |
|
support this or another open source project either directly by coding or indirectly |
| 199 |
|
by funding and thus increase development speed. |
| 200 |
|
</p> |
| 201 |
|
|
| 202 |
|
<a name="aga"></a> |
| 203 |
|
<h3>linuxsampler? qsampler? jsampler? gigedit? libgig? liblscp? jlscp? ... hu?</h3> |
| 204 |
|
<p class="default"> |
| 205 |
|
There are currently seven subprojects in the LinuxSampler project; jlscp, jsampler, |
| 206 |
|
libgig, liblscp, linuxsampler, gigedit and qsampler. linuxsampler is the core of the sampler, it includes the |
| 207 |
sampler engines and audio and MIDI drivers. linuxsampler itself is decoupled from any |
sampler engines and audio and MIDI drivers. linuxsampler itself is decoupled from any |
| 208 |
user interface. It offers a network server (LSCP server) to allow to be controlled by |
user interface. It offers a native C++ API as well as a network server (LSCP server) to allow to be controlled by |
| 209 |
an arbitrary user frontend from an arbitrary place over a network connection or |
an arbitrary user frontend from an arbitrary place over a network connection or |
| 210 |
locally from the same machine as well. |
(of course) locally from the same machine as well. This decoupled / |
| 211 |
qsampler is the first GUI frontend written for linuxsampler, it is written with the Qt |
<a href="http://en.wikipedia.org/wiki/Backend">"backend"</a> design |
| 212 |
|
of the sampler allows to run it even on a machine without any graphical interface, |
| 213 |
|
without a Desktop, the machine doesn't even have to have a graphics card! |
| 214 |
|
qsampler is the first <a href="http://en.wikipedia.org/wiki/Graphical_user_interface">GUI</a> |
| 215 |
|
<a href="http://en.wikipedia.org/wiki/Frontend">frontend</a> |
| 216 |
|
written for linuxsampler, it is written in C++ using the Qt |
| 217 |
GUI library and thus can be compiled for various architectures and operating systems |
GUI library and thus can be compiled for various architectures and operating systems |
| 218 |
without modifications on the source code. |
without modifications of the source code. |
| 219 |
libgig is a C++ library written for loading Gigasampler files and DLS Level 1 and 2 |
gigedit is an instruments editor application for Gigasampler format files. You can |
| 220 |
files. libgig is used by linuxsampler to load Gigasampler files and it <b>can</b> be |
run it as stand-alone application or in conjunction with LinuxSampler. In the latter |
| 221 |
|
case you can play and immediately hear all your modifications made with gigedit in |
| 222 |
|
realtime. |
| 223 |
|
libgig is a C++ library written for accessing Gigasampler files and DLS Level 1 and 2 |
| 224 |
|
files, that is for reading and (since version 3.0.0) also writing of those files. |
| 225 |
|
libgig is used by linuxsampler to load Gigasampler files, it is used by gigedit to |
| 226 |
|
load, modify and create new Gigasampler files and it <b>can</b> be |
| 227 |
used by qsampler to retrieve additional informations about Gigasampler files. liblscp |
used by qsampler to retrieve additional informations about Gigasampler files. liblscp |
| 228 |
is a C library written as a wrapper around the LSCP network protocol, thus to control |
is a C library written as a wrapper around the LSCP network protocol, thus to control |
| 229 |
linuxsampler. It was originally designed to be used on both sides, that is on server / |
linuxsampler. It was originally designed to be used on both sides, that is on server / |
| 230 |
backend side (linuxsampler) and on client / frontend side (e.g. qsampler). But it's now |
backend side (linuxsampler) and on client / frontend side (e.g. qsampler). But it's now |
| 231 |
only used on client side by qsampler at the moment. |
only used on client side by qsampler at the moment. jsampler is another GUI frontend for |
| 232 |
|
linuxsampler, it's written in Java and thus platform independent. jlscp is a library which |
| 233 |
|
can be compared with liblscp, with the only difference that jlscp is written in Java and |
| 234 |
|
liblscp in C. jsampler requires jlscp. |
| 235 |
|
|
| 236 |
</p> |
</p> |
| 237 |
|
|
| 238 |
|
<a name="install"></a> |
| 239 |
<h3>What do I need to compile and install?</h3> |
<h3>What do I need to compile and install?</h3> |
| 240 |
<p class="default"> |
<p class="default"> |
| 241 |
You should compile and install at least libgig and linuxsampler. As a beginner you should |
You should compile and install at least libgig and linuxsampler. As a beginner you should |
| 242 |
definitely as well compile and install liblscp and qsampler. qsampler is a |
definitely as well compile and install a convenient GUI frontend like either qsampler or |
| 243 |
convenient GUI frontend for linuxsampler. qsampler depends on liblscp, so you have to |
jsampler, whatever you prefer. qsampler depends on liblscp, so you have to |
| 244 |
compile and install liblscp before starting to build qsampler. The recommended order to |
compile and install liblscp before starting to build qsampler. Also if you like to be |
| 245 |
compile and install is: |
able to edit instruments, you should compile and install gigedit as well. The recommended |
| 246 |
|
order to compile and install is: |
| 247 |
<ol class="default"> |
<ol class="default"> |
| 248 |
<li>libgig</li> |
<li>libgig</li> |
| 249 |
<li>linuxsampler</li> |
<li>linuxsampler</li> |
| 250 |
|
<li>gigedit</li> |
| 251 |
<li>liblscp</li> |
<li>liblscp</li> |
| 252 |
<li>qsampler</li> |
<li>qsampler</li> |
| 253 |
</ol> |
</ol> |
| 254 |
</p> |
</p> |
| 255 |
|
<p class="default"> |
| 256 |
|
Of course you can also install QSampler and JSampler side by side. So you can test and use |
| 257 |
|
both at the same time. |
| 258 |
|
</p> |
| 259 |
|
|
| 260 |
|
<a name="compilarion_error"></a> |
| 261 |
<h3>Compilation of LinuxSampler aborts with ... </h3> |
<h3>Compilation of LinuxSampler aborts with ... </h3> |
| 262 |
|
|
| 263 |
<p class="default"> |
<p class="default"> |
| 264 |
"<code>can't find a register in class `GENERAL_REGS' while reloading `asm'</code>"<br> |
• "<code>Required libgig version not found...</code>"<br> |
| 265 |
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: |
<br> |
| 266 |
</p> |
This error might occur when running LinuxSampler's configure script. Make sure |
| 267 |
<table class="default" border="0" cellpadding="1" cellspacing="5"> |
you have the required libgig version installed. If you're compiling a CVS |
| 268 |
<tr> |
version of LinuxSampler you usually have to compile and install the current |
| 269 |
<td><pre class="code">1 |
CVS version of libgig as well. Also note there are couple common mistakes which |
| 270 |
2</pre> |
let this error occur even after having compiled and installed the required |
| 271 |
</td> |
libgig version. Read |
| 272 |
<td width="100%"> |
<a href="https://bugs.linuxsampler.org/cgi-bin/show_bug.cgi?id=29">this bug report</a> |
| 273 |
<pre class="code">CXXFLAGS="-O3" ./configure |
about common mistakes and how you can fix them. |
| 274 |
|
</p> |
| 275 |
|
|
| 276 |
|
<p class="default"> |
| 277 |
|
• "<code>can't find a register in class `GENERAL_REGS' while reloading `asm'</code>"<br> |
| 278 |
|
<br> |
| 279 |
|
This is caused by the inline assembly code for |
| 280 |
|
<a href="http://en.wikipedia.org/wiki/SIMD">SIMD</a> optimization in older versions of |
| 281 |
|
linuxsampler. You have to compile older versions of LinuxSampler (v0.3.3 and older) with |
| 282 |
|
-O2 or -O3 to avoid this problem. Usually this is done by default, if not try: |
| 283 |
|
<br> |
| 284 |
|
</p> |
| 285 |
|
<pre class="code">CXXFLAGS="-O3" ./configure |
| 286 |
make</pre> |
make</pre> |
|
</td> |
|
|
</tr> |
|
|
</table> |
|
| 287 |
<p class="default"> |
<p class="default"> |
| 288 |
Alternatively you could also disable all hand-crafted assembly optimization code by: |
Alternatively you could also disable all hand-crafted assembly optimization code by: |
| 289 |
</p> |
</p> |
| 290 |
<table class="default" border="0" cellpadding="1" cellspacing="5"> |
<pre class="code">./configure --disable-asm |
|
<tr> |
|
|
<td><pre class="code">1 |
|
|
2</pre> |
|
|
</td> |
|
|
<td width="100%"> |
|
|
<pre class="code">./configure --disable-asm |
|
| 291 |
make</pre> |
make</pre> |
|
</td> |
|
|
</tr> |
|
|
</table> |
|
| 292 |
<p class="default"> |
<p class="default"> |
| 293 |
but the latter is definitely not recommended! |
but the latter is definitely not recommended, as it will increase CPU usage a lot! |
| 294 |
|
</p> |
| 295 |
|
|
| 296 |
|
<p class="default"> |
| 297 |
|
• "<code>../common/Resampler.h:142: error: memory input 2 is not directly addressable</code>"<br> |
| 298 |
|
<br> |
| 299 |
|
This was reported (<a href="http://sourceforge.net/mailarchive/forum.php?thread_id=9018347&forum_id=12792">1</a>, |
| 300 |
|
<a href="http://sourceforge.net/mailarchive/forum.php?thread_id=9019467&forum_id=12792">2</a>) |
| 301 |
|
to be a gcc/g++ version problem, in conjunction with the inline assembly code for |
| 302 |
|
<a href="http://en.wikipedia.org/wiki/SIMD">SIMD</a> optimization in older versions of |
| 303 |
|
linuxsampler. Make sure you got gcc and g++, both of version 3.3 or higher installed. |
| 304 |
|
You can check this with: |
| 305 |
|
</p> |
| 306 |
|
<pre class="code">gcc --version |
| 307 |
|
g++ --version</pre> |
| 308 |
|
<p class="default"> |
| 309 |
|
In case you already got gcc and g++ of version 3.3 or higher |
| 310 |
|
installed and it still causes the compilation error mentioned |
| 311 |
|
above, try the following: |
| 312 |
|
</p> |
| 313 |
|
<pre class="code">export CC=`which gcc` |
| 314 |
|
export CXX=`which g++`</pre> |
| 315 |
|
<p class="default"> |
| 316 |
|
On certain systems however you still get this error in conjunction with older |
| 317 |
|
versions of LinuxSampler (v0.3.3 and older). Fortunately newer versions of |
| 318 |
|
linuxsampler are not affected anymore |
| 319 |
|
(<a href="https://bugs.linuxsampler.org/cgi-bin/show_bug.cgi?id=34">read this for details</a>). |
| 320 |
</p> |
</p> |
| 321 |
|
|
| 322 |
|
<a name="cvs_checkout"></a> |
| 323 |
<h3>How do I checkout from CVS?</h3> |
<h3>How do I checkout from CVS?</h3> |
| 324 |
<p class="default"> |
<p class="default"> |
| 325 |
The procedure of checking out the newest version from CVS is described on the |
The procedure of checking out the newest version from CVS is described on the |
| 326 |
<a href="downloads.html">Downloads</a> site. |
<a href="downloads.html#cvs">Downloads</a> site and on the |
| 327 |
|
<a href="http://cvs.linuxsampler.org/cgi-bin/viewcvs.cgi/">web interface site |
| 328 |
|
of our CVS server</a>. |
| 329 |
</p> |
</p> |
| 330 |
|
|
| 331 |
|
<a name="compile_cvs"></a> |
| 332 |
<h3>How do I compile from CVS?</h3> |
<h3>How do I compile from CVS?</h3> |
| 333 |
<p class="default"> |
<p class="default"> |
| 334 |
The procedure for compiling from CVS is the same for all subprojects, that is no matter |
The procedure for compiling from CVS is the same for all subprojects, that is no matter |
| 335 |
if you are compiling linuxsampler, qsampler, libgig or liblscp from CVS, you need to |
if you are compiling linuxsampler, qsampler, libgig or liblscp from CVS, you need to |
| 336 |
have the autotools (automake, autoconf and libtool) installed and compile it that way: |
have the autotools (automake, autoconf and libtool) installed and compile it that way: |
| 337 |
</p> |
<pre class="code">make -f Makefile.cvs |
|
<table class="default" border="0" cellpadding="1" cellspacing="5"> |
|
|
<tr> |
|
|
<td><pre class="code">1 |
|
|
2 |
|
|
3</pre> |
|
|
</td> |
|
|
<td width="100%"> |
|
|
<pre class="code">make -f Makefile.cvs |
|
| 338 |
./configure |
./configure |
| 339 |
make</pre> |
make</pre> |
| 340 |
</td> |
</p> |
|
</tr> |
|
|
</table> |
|
| 341 |
|
|
| 342 |
|
<a name="no_gui"></a> |
| 343 |
<h3>Can I use linuxsampler without a GUI as well?</h3> |
<h3>Can I use linuxsampler without a GUI as well?</h3> |
| 344 |
<p class="default"> |
<p class="default"> |
| 345 |
Yes, but unfortunately there is no console based frontend frontend for linuxsampler (yet). |
Yes, but unfortunately there is no console based frontend for linuxsampler (yet). |
| 346 |
You have to write LSCP scripts and send it to the running linuxsampler application. |
You have to write LSCP scripts and send it to the running linuxsampler application. But |
| 347 |
You can send a LSCP script to linuxsampler on the console with the following command: |
don't worry, if you don't know how to write LSCP scripts, you can also start by saving |
| 348 |
</p> |
a sampler session with QSampler, because the session files qsampler writes are actually |
| 349 |
<table class="default" border="0" cellpadding="1" cellspacing="5"> |
real LSCP scripts. You can send a LSCP script to linuxsampler on the console with the |
| 350 |
<tr> |
following command: |
| 351 |
<td><pre class="code">1</pre> |
</p> |
| 352 |
</td> |
<pre class="code">netcat localhost 8888 < yourscript.lscp</pre> |
| 353 |
<td width="100%"> |
<p class="default"> |
| 354 |
<pre class="code">cat yourscript.lscp | netcat -t localhost 8888</pre> |
or on certain systems (like Debian) you have to provide the -t switch: |
| 355 |
</td> |
</p> |
| 356 |
</tr> |
<pre class="code">netcat -t localhost 8888 < yourscript.lscp</pre> |
| 357 |
</table> |
<p class="default"> |
|
<p class="default"> |
|
| 358 |
Of course you can also replace localhost by the IP address of the machine where |
Of course you can also replace localhost by the IP address of the machine where |
| 359 |
linuxsampler is running. Alternatively you can also make a telnet connection (port 8888) |
linuxsampler is running. Alternatively you can also make a telnet connection (port 8888) |
| 360 |
to linuxsampler's LSCP server and type commands manually. |
to linuxsampler's LSCP server and type commands manually. |
| 361 |
</p> |
</p> |
| 362 |
|
|
| 363 |
|
<a name="examples_lscp"></a> |
| 364 |
<h3>Are there example LSCP script files somewhere?</h3> |
<h3>Are there example LSCP script files somewhere?</h3> |
| 365 |
<p class="default"> |
<p class="default"> |
| 366 |
Yes, have a look on the <a href="documentation.html">Documentation</a> site for some |
Yes, have a look on the <a href="documentation.html">Documentation</a> site for some |
| 367 |
common LSCP script examples. For details about LSCP read the |
common LSCP script examples. For details about LSCP read the |
| 368 |
<a href="api/draft-linuxsampler-protocol.html">LSCP reference</a>. Be welcome to ask |
<a href="api/draft-linuxsampler-protocol.html">LSCP reference</a>. Be welcome to ask |
| 369 |
questions for details about LSCP on the mailing list. |
questions for details about LSCP on the |
| 370 |
|
<a href="http://lists.sourceforge.net/lists/listinfo/linuxsampler-devel">mailing list</a>. |
| 371 |
</p> |
</p> |
| 372 |
|
|
| 373 |
<a name="dropouts"></a> |
<a name="dropouts"></a> |
| 376 |
In order to achieve good results under Linux you need to have a |
In order to achieve good results under Linux you need to have a |
| 377 |
<a href="http://www.linuxdj.com/audio/lad/resourceslatency.php3">patched kernel</a>. |
<a href="http://www.linuxdj.com/audio/lad/resourceslatency.php3">patched kernel</a>. |
| 378 |
There are different patches available depending on what version (2.4.x or 2.6.x) of kernel you use. |
There are different patches available depending on what version (2.4.x or 2.6.x) of kernel you use. |
| 379 |
The <a href="http://jackit.sourceforge.net/docs/faq.php">JACK FAQ site</a> is also a good resource |
The <a href="http://jackaudio.org/faq">JACK FAQ site</a> |
| 380 |
|
(or the <a href="http://jackit.sourceforge.net/docs/faq.php">old JACK FAQ site</a>) |
| 381 |
|
is also a good resource for |
| 382 |
how to configure a realtime stable kernel. But note; LinuxSampler currently has not support for |
how to configure a realtime stable kernel. But note; LinuxSampler currently has not support for |
| 383 |
libcap yet, that means if you are still using a 2.4.x Linux kernel you most probably have to run |
libcap yet, that means if you are still using a 2.4.x Linux kernel you most probably have to run |
| 384 |
LinuxSampler with root priviliges (support for libcap is planned though). As a rule of thumb: if |
LinuxSampler with root priviliges. As a rule of thumb: if you don't get warnings like "cannot |
| 385 |
you don't get warnings like "cannot mlockall() memory" you are safe to run it as ordinary user as well. |
mlockall() memory" on the console, you are safe to run it as ordinary user as well. |
| 386 |
</p> |
</p> |
| 387 |
|
|
| 388 |
</div> |
</div> |
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Revision Log
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