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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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<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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</td><td valign=top width="100%"> |
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<div id="contents"> |
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<h2>Documentation</h2> |
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<p class="default"> |
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This is still quite under construction. Be welcome to help us with writing some documentation! |
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</p> |
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<h2>LSCP Reference</h2> |
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<p class="default"> |
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The following document defines the network protocol with which LinuxSampler can be controlled. |
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As this is a simple ASCII based protocol it's possible to write a frontend for LinuxSampler in |
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any programming language and GUI library. There's still a big demand especially for a Gtk and |
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ncurses based frontend, so be encouraged and let |
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<a href="http://www.linuxsampler.org/developers.html">us</a> know if you wrote a frontend for |
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LinuxSampler! This is the latest draft of the protocol: |
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<br> |
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</p> |
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<center> |
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LinuxSampler Control Protocol Draft (<a href="http://www.linuxsampler.org/api/draft-linuxsampler-protocol.txt">ASCII</a>, |
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<a href="http://www.linuxsampler.org/api/draft-linuxsampler-protocol.html">HTML</a>) |
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</center> |
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<p class="default"> |
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The protocol will be extended from time to time. Have a look at the |
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<a href="features.html#LSCP">features</a> site to see which control commands are already implemented and which are not. |
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</p> |
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<a name="example_lscp_scripts"> |
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<h3>Example LSCP scripts</h3> |
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<p class="default"> |
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If you don't want / can't use a GUI frontend you will probably write some LSCP scripts for |
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using with linuxsampler to setup your needed sampler session. It follows some common LSCP |
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examples to give you a good starting point for writing your own ones. Adjust it to your needs |
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and send it to the running linuxsampler application with: |
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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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Here is a simple LSCP example which uses ALSA as MIDI input and as audio output driver as well, |
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it creates only one sampler channel using the Gigasampler engine and loads a Piano instrument |
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on that sampler channel: |
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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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29</pre> |
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</td> |
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<td width="100%"> |
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<pre class="code">#enable echo mode |
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SET ECHO 1 |
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# load the ALSA audio driver |
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# (parameter CARD is optional, I use it here to select my 2nd sound card |
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# you can use 'GET AUDIO_OUTPUT_DRIVER_PARAMETER INFO ALSA CARD' to get |
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# all available sound cards) |
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CREATE AUDIO_OUTPUT_DEVICE ALSA CARD='1,0' |
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# load the ALSA MIDI driver |
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CREATE MIDI_INPUT_DEVICE ALSA |
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# connect my MIDI keyboard which has ALSA seq ID '72:0' |
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# (see 'aconnect -i' for the IDs of your MIDI devices |
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# or use 'GET MIDI_INPUT_PORT_PARAMETER INFO 0 0 ALSA_SEQ_BINDINGS') |
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SET MIDI_INPUT_PORT_PARAMETER 0 0 ALSA_SEQ_BINDINGS='72:0' |
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# setup a sampler channel |
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ADD CHANNEL |
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LOAD ENGINE gig 0 |
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SET CHANNEL AUDIO_OUTPUT_DEVICE 0 0 |
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SET CHANNEL MIDI_INPUT_DEVICE 0 0 |
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LOAD INSTRUMENT '/home/me/Gigs/PMI Steinway D.gig' 0 0 |
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# finally show our channel setup (optional of course) |
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GET CHANNEL INFO 0 |
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# quit connection |
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QUIT</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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The next example uses JACK as audio output driver instead and automatically connects the two |
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output channels of LS's JACK client to the first two ALSA PCM channels, so you can hear |
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something without having to manually connect it e.g. with qjackctl: |
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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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32</pre> |
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</td> |
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<td width="100%"> |
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<pre class="code">#enable echo mode |
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SET ECHO 1 |
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# load the JACK audio driver |
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CREATE AUDIO_OUTPUT_DEVICE JACK |
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# connect to ALSA playback JACK client so we can hear something |
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# (you can use 'GET AUDIO_OUTPUT_CHANNEL_PARAMETER INFO 0 0 JACK_BINDINGS' |
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# to get all available JACK clients / ports) |
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SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 JACK_BINDINGS='alsa_pcm:playback_1' |
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SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 1 JACK_BINDINGS='alsa_pcm:playback_2' |
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# load the ALSA MIDI driver |
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CREATE MIDI_INPUT_DEVICE ALSA |
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# connect my MIDI keyboard which has ALSA seq ID '72:0' |
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# (see 'aconnect -i' for the IDs of your MIDI devices |
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# or use 'GET MIDI_INPUT_PORT_PARAMETER INFO 0 0 ALSA_SEQ_BINDINGS') |
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SET MIDI_INPUT_PORT_PARAMETER 0 0 ALSA_SEQ_BINDINGS='72:0' |
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# setup one sampler channel |
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ADD CHANNEL |
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LOAD ENGINE gig 0 |
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SET CHANNEL AUDIO_OUTPUT_DEVICE 0 0 |
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SET CHANNEL MIDI_INPUT_DEVICE 0 0 |
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LOAD INSTRUMENT '/home/me/Gigs/PMI Steinway D.gig' 0 0 |
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# finally show our channel setup (optional of course) |
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GET CHANNEL INFO 0 |
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# quit connection |
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QUIT</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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The next example is a bit more complex. |
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It shows how to setup a more realistic sampler session, handle routing of MIDI input channels, |
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handle routing of audio channels, it uses JACK again as audio |
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output driver, but creates the JACK client with four output channels instead, it creates two |
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sampler channels, loads two different instrument on those two sampler channels and alters |
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the audio channel routing so that the two output channels of sampler channel 1 are routed to |
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the first two JACK output channels and the two output channels of sampler channel 2 are routed |
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the second pair of the JACK client's output channels. That way you could e.g. record the output |
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of those two sampler channels independently or apply independent LADSPA effects on it. |
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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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50</pre> |
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</td> |
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<td width="100%"> |
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<pre class="code"># enable echo mode |
| 380 |
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SET ECHO 1 |
| 381 |
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| 382 |
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# load audio and MIDI driver |
| 383 |
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CREATE AUDIO_OUTPUT_DEVICE JACK |
| 384 |
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CREATE MIDI_INPUT_DEVICE ALSA |
| 385 |
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| 386 |
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# increase the amount of output channels of the LS"s Jack client e.g. to 4 |
| 387 |
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SET AUDIO_OUTPUT_DEVICE_PARAMETER 0 CHANNELS=4 |
| 388 |
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| 389 |
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# connect to MIDI keyboard |
| 390 |
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SET MIDI_INPUT_PORT_PARAMETER 0 0 ALSA_SEQ_BINDINGS="64:0" |
| 391 |
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| 392 |
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# set up 1st sampler channel (using default output channels, that is 0 and 1) |
| 393 |
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ADD CHANNEL |
| 394 |
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LOAD ENGINE gig 0 |
| 395 |
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SET CHANNEL AUDIO_OUTPUT_DEVICE 0 0 |
| 396 |
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SET CHANNEL MIDI_INPUT_DEVICE 0 0 |
| 397 |
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LOAD INSTRUMENT "/somedir/The Bosendorfer Imperial Grand Version 2.2.gig" 0 0 |
| 398 |
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SET CHANNEL VOLUME 0 0.40 |
| 399 |
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# by default every sampler channel / engine listens to ALL MIDI channels |
| 400 |
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# but for multi channel setup it makes sense to distinguish the inputs, so |
| 401 |
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# let sampler channel 0 listen to MIDI channel 0 (instead of ALL) |
| 402 |
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SET CHANNEL MIDI_INPUT_CHANNEL 0 0 |
| 403 |
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| 404 |
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# set up 2nd sampler channel (using output channels 2 and 3) |
| 405 |
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ADD CHANNEL |
| 406 |
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LOAD ENGINE gig 1 |
| 407 |
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SET CHANNEL AUDIO_OUTPUT_DEVICE 1 0 |
| 408 |
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SET CHANNEL MIDI_INPUT_DEVICE 1 0 |
| 409 |
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LOAD INSTRUMENT "/home/me/Gigs/NemeSys_1GB_Grand.gig" 0 1 |
| 410 |
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SET CHANNEL VOLUME 1 0.40 |
| 411 |
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# let sampler channel 1 listen to MIDI channel 1 (instead of ALL) |
| 412 |
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SET CHANNEL MIDI_INPUT_CHANNEL 1 1 |
| 413 |
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# this will alter the audio channel routing |
| 414 |
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# connect the engines output channel 0 to JACK clients output 2 |
| 415 |
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SET CHANNEL AUDIO_OUTPUT_CHANNEL 1 0 2 |
| 416 |
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# connect the engines output channel 1 to JACK clients output 3 |
| 417 |
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SET CHANNEL AUDIO_OUTPUT_CHANNEL 1 1 3 |
| 418 |
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| 419 |
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# automatic connection between the four 4 ports of LS's Jack client and the |
| 420 |
|
|
# ALSA PCM JACK client (assuming your sound card has at least 4 outputs ;-) |
| 421 |
|
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SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 JACK_BINDINGS='alsa_pcm:playback_1' |
| 422 |
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SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 1 JACK_BINDINGS='alsa_pcm:playback_2' |
| 423 |
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SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 2 JACK_BINDINGS='alsa_pcm:playback_3' |
| 424 |
|
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SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 3 JACK_BINDINGS='alsa_pcm:playback_4' |
| 425 |
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|
| 426 |
|
|
# not necessary, just to see our setup |
| 427 |
|
|
GET CHANNEL INFO 0 |
| 428 |
|
|
GET CHANNEL INFO 1</pre> |
| 429 |
|
|
</td> |
| 430 |
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|
</tr> |
| 431 |
|
|
</table> |
| 432 |
|
|
<p class="default"> |
| 433 |
|
|
For a detailed description about LSCP read the <a href="api/draft-linuxsampler-protocol.html">LSCP reference</a>. |
| 434 |
|
|
Be welcome to ask details on the mailing list. |
| 435 |
|
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</p> |
| 436 |
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| 437 |
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| 438 |
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</div> |
| 439 |
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</td></tr></table> |
| 440 |
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</div> |
| 442 |
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| 443 |
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</body> |
| 444 |
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</html> |
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