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<body class="article toc2 toc-left">
<div id="header">
<h1>Fluajho</h1>
<div class="details">
<span id="author" class="author">Laborejo Software Suite</span><br>
</div>
<div id="toc" class="toc2">
<div id="toctitle">Table of Contents</div>
<ul class="sectlevel1">
<li><a href="#_introduction">1. Introduction</a>
<ul class="sectlevel2">
<li><a href="#_basic_principles">1.1. Basic Principles</a></li>
</ul>
</li>
<li><a href="#_description_of_the_graphical_user_interface_and_its_functions">2. Description of the graphical user interface and its functions</a></li>
<li><a href="#_installation_and_start">3. Installation and Start</a></li>
<li><a href="#_help_and_development">4. Help and Development</a>
<ul class="sectlevel2">
<li><a href="#_testing_and_reporting_errors">4.1. Testing and Reporting Errors</a></li>
<li><a href="#_programming">4.2. Programming</a></li>
<li><a href="#_translations">4.3. Translations</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p>For program version 1.7.3</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_introduction">1. Introduction</h2>
<div class="sectionbody">
<div class="paragraph">
<p>"Fluajho" (with jh as in pleasure) means fluid in Esperanto. It is a simple sf2 soundfont
host/player for Linux. Behind the scenes the Fluidsynth library is at work, hence the name.</p>
</div>
<div class="paragraph">
<p>This program is feature-complete with version 1.7.1 in 2022.
Further releases will be limited to maintenance and fixing problems.</p>
</div>
<div class="paragraph">
<div class="title">sf2 is an old file format for making MIDI signals audible through virtual instruments, although it</div>
<p>is still in moderate use today.</p>
</div>
<div class="paragraph">
<p>Why does Fluajho exist? There are already many soundfont players for Linux,
most of them even based on Fluidsynth. Fluajho was written for a clearly defined use case:
Load an .sf2 in the New Session Manager (Agordejo) and save the soundfont in the session directory.
This makes it possible to archive the session, for example as a backup or to share it.</p>
</div>
<div class="paragraph">
<p>If you already have a DAW, host or plugin that reliably saves soundfont files together with the
session you do not need Fluajho.</p>
</div>
<div class="paragraph">
<p>You can load one soundfont file per Fluajho instance. Each instance holds 16 of the soundfonts
instruments that can be assigned to 16 MIDI channels. All access to MIDI parameters like Volume or
Pan needs to be done via midi control changes.</p>
</div>
<div class="paragraph">
<p>Finally connect external sequencers, such as Laborejo or Patroneo, through JACK-Midi to play the
instruments. There is only one JACK-Midi input but each of the 16 midi channels has it&#8217;s own stereo
JACK audio output. Additionally there is a stereo mix output pair.</p>
</div>
<div class="sect2">
<h3 id="_basic_principles">1.1. Basic Principles</h3>
<div class="paragraph">
<p>Fluajho loads exactly one <code>.sf2</code> soundfont. A soundfont can contain several instruments, of which
up to 16 can be used simultaneously.</p>
</div>
<div class="paragraph">
<p>Each of the instruments can be loaded into one MIDI channel. To do this, first select a bank in a
channel (Bank 0 if in doubt) and then a program.</p>
</div>
<div class="paragraph">
<p>On the first launch a small standard soundfont is loaded, which is General Midi (GM) compatible.</p>
</div>
<div class="paragraph">
<p>Fluajho itself has no option to play notes. To control the sounds, you send MIDI data to our input
port via JACK. The channel is a property of the midi signal and is already selected in the
sequencer.</p>
</div>
<div class="paragraph">
<p>Each channel has two separate audio outputs in JACK: Left and Right.</p>
</div>
<div class="paragraph">
<p>Saving and loading your project is done by the New Session Manager (Agordejo). There you will find
a "Save" button.</p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description_of_the_graphical_user_interface_and_its_functions">2. Description of the graphical user interface and its functions</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Use your browser&#8217;s search function to locate the individual letters like [B] and their explanation.</p>
</div>
<div class="imageblock">
<div class="content">
<a class="image" href="overview-english.png"><img src="overview-english.png" alt="Screenshot with Captions"></a>
</div>
</div>
<div class="paragraph">
<p>The <strong>[A] File</strong> menu contains "sf2 Soundfont load" (keyboard shortcut: Ctrl+O).
Only one soundfont can be loaded at a time. If you want to use several different soundfonts at
once, just start Fluajho several times. Saving and Closing is also here.</p>
</div>
<div class="paragraph">
<p>It is also possible to load an .sf2 through drag &amp; drop from your file manager into the Fluajho
window.</p>
</div>
<div class="paragraph">
<p>The option <strong>[B] Ignore MIDI Bank and Program Messages</strong> only allows instrument changes via the
graphical user interface. It ignores all messages coming in via the JACK Midi connection.</p>
</div>
<div class="paragraph">
<p>This is sometimes necessary if you are dealing with midi hardware, like keyboards, which send bank
and program changes at startup and break our settings. You can also activate this option as soon as
you have set all instruments, because a program change unfortunately happens faster than one would
think.</p>
</div>
<div class="paragraph">
<p>The option <strong>[C] Play test sound after selecting a program</strong> can be activated to hear some played
notes right choosing a different instrument through the program change dropdown [G]. The test signal
is <strong>not</strong> played when changing an instrument through an external midi signal.</p>
</div>
<div class="paragraph">
<p>Channels are numbered <strong>[D] Channel N</strong> . MIDI supports exactly 16 channels, there is no adjustment
possible. More channels of the same soundfont can be obtained by simply starting another Fluajho
instance. Next to the channel is a small rectangle that lights up if MIDI is coming in.</p>
</div>
<div class="paragraph">
<p><strong>Play Test [E]</strong> plays some test notes after a click. This can be used even if option [C] is not
currently activated.</p>
</div>
<div class="paragraph">
<p>The current <strong>[F] Bank</strong> is always displayed as a number. You can choose them from the drop down
list. Only the banks, which actually exist in the current sf2 are listed.</p>
</div>
<div class="paragraph">
<p>The current <strong>[G] Program</strong> is the instrument. It is displayed with its MIDI number and actual name.
Only the programs present in the sf2 are displayed.+ However, the soundfonts are often wrong in
that they display more instruments than they actually have. In this case you will hear a more or
less random (existing) instrument instead.</p>
</div>
<div class="paragraph">
<p>If you run Fluajho under Session Management, as intended, tere is no internal way to <strong>close</strong> it.
If you use the function of your window manager like [X], Alt+F4 etc. the graphical user interface
is only hidden.</p>
</div>
<div class="paragraph">
<p>To really close Fluajho you can use Agordejo (New Session Manager). Here you can
also restore visibility by showing the GUI again.</p>
</div>
<div class="paragraph">
<p>The current visibility setting is saved. This is because you normally only spend a relatively short
time loading a soundfont. Afterwards, the window would only get in the way.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_installation_and_start">3. Installation and Start</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Fluajho is exclusive for Linux. The best way to install is to use your package manager.
If it is not there, or only in an outdated version, please ask your Linux distribution to provide a recent version.</p>
</div>
<div class="paragraph">
<p>If available in the package repository, please continue reading directly at "Start fluajho from Agordejo / New Session Manager".
If not, you can build Fluajho yourself.</p>
</div>
<div class="ulist">
<div class="title">Build and Install</div>
<ul>
<li>
<p>Please check the supplied README.md for dependencies.</p>
</li>
<li>
<p>You can download a release or clone the git version</p>
<div class="ulist">
<ul>
<li>
<p>Download the latest version from <a href="https://www.laborejo.org/downloads" class="bare">https://www.laborejo.org/downloads</a> and extract it.</p>
</li>
<li>
<p>git clone <a href="https://git.laborejo.org/lss/fluajho.git" class="bare">https://git.laborejo.org/lss/fluajho.git</a></p>
</li>
</ul>
</div>
</li>
<li>
<p>Change into the new directory and use these commands:</p>
</li>
<li>
<p><code>./configure --prefix=/usr</code></p>
<div class="ulist">
<ul>
<li>
<p>The default prefix is /usr/local</p>
</li>
</ul>
</div>
</li>
<li>
<p><code>make</code></p>
</li>
<li>
<p><code>sudo make install</code></p>
</li>
</ul>
</div>
<div class="ulist">
<div class="title">Start fluajho from Agordejo (New Session Manager, NSM)</div>
<ul>
<li>
<p>Run <code>agordejo</code></p>
</li>
<li>
<p>Press the <code>New</code> button, and enter a name for your piece of music.</p>
</li>
<li>
<p>Use the launcher to add <code>fluajho</code> to the session.</p>
</li>
<li>
<p>Add any compatible programs, e.g. synthesizers.</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>Please read README.md for other ways of starting fluajho, which are impractical for actual use but can
be helpful for testing and development.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_help_and_development">4. Help and Development</h2>
<div class="sectionbody">
<div class="paragraph">
<p>You can help Fluajho in several ways: Testing and reporting errors, translating, marketing, support, programming and more.</p>
</div>
<div class="sect2">
<h3 id="_testing_and_reporting_errors">4.1. Testing and Reporting Errors</h3>
<div class="paragraph">
<p>If you find a bug in the program (or it runs too slow) please contact us in a way that suits you best.
We are thankful for any help.</p>
</div>
<div class="ulist">
<div class="title">How to contact us</div>
<ul>
<li>
<p>Report bugs and issues: <a href="https://www.laborejo.org/bugs" class="bare">https://www.laborejo.org/bugs</a></p>
</li>
<li>
<p>Website: <a href="https://www.laborejo.org" class="bare">https://www.laborejo.org</a></p>
</li>
<li>
<p>E-Mail: <a href="mailto:info@laborejo.org">info@laborejo.org</a></p>
</li>
<li>
<p>If you see the opportunity and know that a developer will read it also forums, social media etc..</p>
</li>
</ul>
</div>
</div>
<div class="sect2">
<h3 id="_programming">4.2. Programming</h3>
<div class="paragraph">
<p>If you want to do some programming and don&#8217;t know where to start please get in contact with us directly.
The short version is: clone the git, change the code, create a git patch or point me to your public git.</p>
</div>
</div>
<div class="sect2">
<h3 id="_translations">4.3. Translations</h3>
<div class="paragraph">
<p>Fluajho is very easy to translate with the help of the Qt-Toolchain, without any need for programming.
The easiest way is to contact the developers and they will setup the new language.</p>
</div>
<div class="paragraph">
<p>However, here are the complete instructions for doing a translation completely on your own and integrating it into the program.
The program is split in two parts. A shared "template" between the Laborejo Software Suite and the actual program.</p>
</div>
<div class="paragraph">
<p>The process is the same for both parts, but needs to be done in different directories:
<code>template/qtgui</code> and plain <code>/qtgui</code>, relative to the root directory, where the fluajho executable is.</p>
</div>
<div class="paragraph">
<p>Everytime you see "template/qtgui" below you can substitute that with just "qtgui" to translate the other part of Fluajho.</p>
</div>
<div class="paragraph">
<p>You can add a new language like this:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Open a terminal and navigate to template/qtgui/resources/translations</p>
</li>
<li>
<p>Edit the file <code>config.pro</code> with a text editor</p>
<div class="ulist">
<ul>
<li>
<p>Append the name of your language in the last line, in the form <code>XY.ts</code>, where XY is the language code.</p>
</li>
<li>
<p>Make sure to leave a space between the individual languages entries.</p>
</li>
</ul>
</div>
</li>
<li>
<p>Run <code>sh update.sh</code> in the same directory</p>
<div class="ulist">
<ul>
<li>
<p>The program has now generated a new <code>.ts</code> file in the same directory.</p>
</li>
</ul>
</div>
</li>
<li>
<p>Start Qt Linguist with <code>linguist-qt5</code> (may be named differently) and open your newly generated file</p>
</li>
<li>
<p>Select your "Target Language" and use the program to create a translation</p>
</li>
<li>
<p>Send us the <code>.ts</code> file, such as by e-mail to <a href="mailto:info@laborejo.org">info@laborejo.org</a></p>
</li>
</ul>
</div>
<div class="paragraph">
<p>You can also incorporate the translation into Fluajho for testing purposes. This requires rudimentary Python knowledge.</p>
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<p>Run the "Release" option in QtLinguists "File" menu. It creates a <code>.qm</code> file in the same directory as your <code>.ts</code> file.</p>
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<p>Edit <code>template/qtgui/resources/resources.qrc</code> and duplicate the line <code>&lt;file&gt;translations/de.qm&lt;/file&gt;</code> but change it to your new .qm file.</p>
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<p>run <code>sh buildresources.sh</code></p>
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<p>Edit <code>engine/config.py</code>: add your language to the line that begins with "supportedLanguages" like this: <code>{"German": "de.qm", "Esperanto: "eo.qm"}</code></p>
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<p>To find out your language string (German, Esperanto etc.) open the <code>python3</code> interpreter in a terminal and run the following command:</p>
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<p><code>from PyQt5 import QtCore;QtCore.QLocale().languageToString(QtCore.QLocale().language())</code></p>
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<p>To test the new translation you can either run the program normally, if your system is set to that language. Alternatively start fluajho via the terminal:</p>
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<p><code>LANGUAGE=de_DE.UTF-8 ./fluajho -V --save /dev/null</code></p>
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Last updated 2022-07-14 19:32:08 +0200
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