fluidsynth.github.io/api/fluidsynth_simple_8c-example.html at main · FluidSynth/fluidsynth.github.io · GitHub

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<div class="title">fluidsynth_simple.c</div>  </div>
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<div class="contents">
<p>A basic example of using fluidsynth to play a single note</p>
<div class="fragment"><div class="line"><span class="comment">/* FluidSynth Simple - An example of using fluidsynth</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * This code is in the public domain.</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * To compile:</span></div>
<div class="line"><span class="comment"> *   gcc -g -O -o fluidsynth_simple fluidsynth_simple.c -lfluidsynth</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * To run</span></div>
<div class="line"><span class="comment"> *   fluidsynth_simple soundfont</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * [Peter Hanappe]</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;fluidsynth.h&gt;</span></div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)</div>
<div class="line">{</div>
<div class="line">    <a class="code" href="group__Types.html#gaa363402d3c77333b0f070ba531d034ba">fluid_settings_t</a> *settings;</div>
<div class="line">    <a class="code" href="group__Types.html#gae265f10ae174a13afe010de50d87e1a4">fluid_synth_t</a> *synth = NULL;</div>
<div class="line">    <a class="code" href="group__Types.html#gac3706330ce49cac5b7dd079e90d376d8">fluid_audio_driver_t</a> *adriver = NULL;</div>
<div class="line">    <span class="keywordtype">int</span> err = 0;</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">if</span>(argc != 2)</div>
<div class="line">    {</div>
<div class="line">        fprintf(stderr, <span class="stringliteral">&quot;Usage: fluidsynth_simple [soundfont]\n&quot;</span>);</div>
<div class="line">        <span class="keywordflow">return</span> 1;</div>
<div class="line">    }</div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* Create the settings object. This example uses the default</span></div>
<div class="line"><span class="comment">     * values for the settings. */</span></div>
<div class="line">    settings = <a name="a0"></a><a class="code" href="group__settings.html#ga7623af35fb3d1abace21ef7d5b4f4781">new_fluid_settings</a>();</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">if</span>(settings == NULL)</div>
<div class="line">    {</div>
<div class="line">        fprintf(stderr, <span class="stringliteral">&quot;Failed to create the settings\n&quot;</span>);</div>
<div class="line">        err = 2;</div>
<div class="line">        <span class="keywordflow">goto</span> cleanup;</div>
<div class="line">    }</div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* Create the synthesizer */</span></div>
<div class="line">    synth = <a name="a1"></a><a class="code" href="group__synth.html#ga2aab8e0b82dc9fd086849efacb3c1b1b">new_fluid_synth</a>(settings);</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">if</span>(synth == NULL)</div>
<div class="line">    {</div>
<div class="line">        fprintf(stderr, <span class="stringliteral">&quot;Failed to create the synthesizer\n&quot;</span>);</div>
<div class="line">        err = 3;</div>
<div class="line">        <span class="keywordflow">goto</span> cleanup;</div>
<div class="line">    }</div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* Load the soundfont */</span></div>
<div class="line">    <span class="keywordflow">if</span>(<a name="a2"></a><a class="code" href="group__soundfont__management.html#ga0ba0bc9d4a19c789f9969cd22d22bf66">fluid_synth_sfload</a>(synth, argv[1], 1) == -1)</div>
<div class="line">    {</div>
<div class="line">        fprintf(stderr, <span class="stringliteral">&quot;Failed to load the SoundFont\n&quot;</span>);</div>
<div class="line">        err = 4;</div>
<div class="line">        <span class="keywordflow">goto</span> cleanup;</div>
<div class="line">    }</div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* Create the audio driver. As soon as the audio driver is</span></div>
<div class="line"><span class="comment">     * created, the synthesizer can be played. */</span></div>
<div class="line">    adriver = <a name="a3"></a><a class="code" href="group__audio__driver.html#ga7c66ef86f0008807bdd955770fca6925">new_fluid_audio_driver</a>(settings, synth);</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">if</span>(adriver == NULL)</div>
<div class="line">    {</div>
<div class="line">        fprintf(stderr, <span class="stringliteral">&quot;Failed to create the audio driver\n&quot;</span>);</div>
<div class="line">        err = 5;</div>
<div class="line">        <span class="keywordflow">goto</span> cleanup;</div>
<div class="line">    }</div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* Play a note */</span></div>
<div class="line">    <a name="a4"></a><a class="code" href="group__midi__messages.html#ga038a0f309e8004f39cb5491514bfac54">fluid_synth_noteon</a>(synth, 0, 60, 100);</div>
<div class="line"> </div>
<div class="line">    printf(<span class="stringliteral">&quot;Press \&quot;Enter\&quot; to stop: &quot;</span>);</div>
<div class="line">    fgetc(stdin);</div>
<div class="line">    printf(<span class="stringliteral">&quot;done\n&quot;</span>);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line">cleanup:</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">if</span>(adriver)</div>
<div class="line">    {</div>
<div class="line">        <a name="a5"></a><a class="code" href="group__audio__driver.html#ga9c6f54ffa43a8ca482aca81582316f5a">delete_fluid_audio_driver</a>(adriver);</div>
<div class="line">    }</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">if</span>(synth)</div>
<div class="line">    {</div>
<div class="line">        <a name="a6"></a><a class="code" href="group__synth.html#gab42ea6e25476be548deb428c839d7d2b">delete_fluid_synth</a>(synth);</div>
<div class="line">    }</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">if</span>(settings)</div>
<div class="line">    {</div>
<div class="line">        <a name="a7"></a><a class="code" href="group__settings.html#gabd13a1e869bfaaaebfc58a72af5a66ac">delete_fluid_settings</a>(settings);</div>
<div class="line">    }</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">return</span> err;</div>
<div class="line">}</div>
<div class="ttc" id="agroup__Types_html_gaa363402d3c77333b0f070ba531d034ba"><div class="ttname"><a href="group__Types.html#gaa363402d3c77333b0f070ba531d034ba">fluid_settings_t</a></div><div class="ttdeci">struct _fluid_hashtable_t fluid_settings_t</div><div class="ttdoc">Configuration settings instance.</div><div class="ttdef"><b>Definition:</b> types.h:37</div></div>
<div class="ttc" id="agroup__Types_html_gac3706330ce49cac5b7dd079e90d376d8"><div class="ttname"><a href="group__Types.html#gac3706330ce49cac5b7dd079e90d376d8">fluid_audio_driver_t</a></div><div class="ttdeci">struct _fluid_audio_driver_t fluid_audio_driver_t</div><div class="ttdoc">Audio driver instance.</div><div class="ttdef"><b>Definition:</b> types.h:45</div></div>
<div class="ttc" id="agroup__Types_html_gae265f10ae174a13afe010de50d87e1a4"><div class="ttname"><a href="group__Types.html#gae265f10ae174a13afe010de50d87e1a4">fluid_synth_t</a></div><div class="ttdeci">struct _fluid_synth_t fluid_synth_t</div><div class="ttdoc">Synthesizer instance.</div><div class="ttdef"><b>Definition:</b> types.h:38</div></div>
<div class="ttc" id="agroup__audio__driver_html_ga7c66ef86f0008807bdd955770fca6925"><div class="ttname"><a href="group__audio__driver.html#ga7c66ef86f0008807bdd955770fca6925">new_fluid_audio_driver</a></div><div class="ttdeci">fluid_audio_driver_t * new_fluid_audio_driver(fluid_settings_t *settings, fluid_synth_t *synth)</div><div class="ttdoc">Create a new audio driver.</div><div class="ttdef"><b>Definition:</b> fluid_adriver.c:343</div></div>
<div class="ttc" id="agroup__audio__driver_html_ga9c6f54ffa43a8ca482aca81582316f5a"><div class="ttname"><a href="group__audio__driver.html#ga9c6f54ffa43a8ca482aca81582316f5a">delete_fluid_audio_driver</a></div><div class="ttdeci">void delete_fluid_audio_driver(fluid_audio_driver_t *driver)</div><div class="ttdoc">Deletes an audio driver instance.</div><div class="ttdef"><b>Definition:</b> fluid_adriver.c:442</div></div>
<div class="ttc" id="agroup__midi__messages_html_ga038a0f309e8004f39cb5491514bfac54"><div class="ttname"><a href="group__midi__messages.html#ga038a0f309e8004f39cb5491514bfac54">fluid_synth_noteon</a></div><div class="ttdeci">int fluid_synth_noteon(fluid_synth_t *synth, int chan, int key, int vel)</div><div class="ttdoc">Send a note-on event to a FluidSynth object.</div><div class="ttdef"><b>Definition:</b> fluid_synth.c:1421</div></div>
<div class="ttc" id="agroup__settings_html_ga7623af35fb3d1abace21ef7d5b4f4781"><div class="ttname"><a href="group__settings.html#ga7623af35fb3d1abace21ef7d5b4f4781">new_fluid_settings</a></div><div class="ttdeci">fluid_settings_t * new_fluid_settings(void)</div><div class="ttdoc">Create a new settings object.</div><div class="ttdef"><b>Definition:</b> fluid_settings.c:261</div></div>
<div class="ttc" id="agroup__settings_html_gabd13a1e869bfaaaebfc58a72af5a66ac"><div class="ttname"><a href="group__settings.html#gabd13a1e869bfaaaebfc58a72af5a66ac">delete_fluid_settings</a></div><div class="ttdeci">void delete_fluid_settings(fluid_settings_t *settings)</div><div class="ttdoc">Delete the provided settings object.</div><div class="ttdef"><b>Definition:</b> fluid_settings.c:285</div></div>
<div class="ttc" id="agroup__soundfont__management_html_ga0ba0bc9d4a19c789f9969cd22d22bf66"><div class="ttname"><a href="group__soundfont__management.html#ga0ba0bc9d4a19c789f9969cd22d22bf66">fluid_synth_sfload</a></div><div class="ttdeci">int fluid_synth_sfload(fluid_synth_t *synth, const char *filename, int reset_presets)</div><div class="ttdoc">Load a SoundFont file.</div><div class="ttdef"><b>Definition:</b> fluid_synth.c:5563</div></div>
<div class="ttc" id="agroup__synth_html_ga2aab8e0b82dc9fd086849efacb3c1b1b"><div class="ttname"><a href="group__synth.html#ga2aab8e0b82dc9fd086849efacb3c1b1b">new_fluid_synth</a></div><div class="ttdeci">fluid_synth_t * new_fluid_synth(fluid_settings_t *settings)</div><div class="ttdoc">Create new FluidSynth instance.</div><div class="ttdef"><b>Definition:</b> fluid_synth.c:711</div></div>
<div class="ttc" id="agroup__synth_html_gab42ea6e25476be548deb428c839d7d2b"><div class="ttname"><a href="group__synth.html#gab42ea6e25476be548deb428c839d7d2b">delete_fluid_synth</a></div><div class="ttdeci">void delete_fluid_synth(fluid_synth_t *synth)</div><div class="ttdoc">Delete a FluidSynth instance.</div><div class="ttdef"><b>Definition:</b> fluid_synth.c:1192</div></div>
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