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<div id="projectname">libfluidsynth
 <span id="projectnumber">2.5.4</span>
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<div class="title">Playing a MIDI file from memory </div> </div>
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<div class="textblock"><p>FluidSynth can be also play MIDI files directly from a buffer in memory. If you need to play a file from a stream (such as stdin, a network, or a high-level file interface), you can load the entire file into a buffer first, and then use this approach. Use the same technique as above, but rather than calling <a class="el" href="group__midi__player.html#gaf17b468585c60d343ee950c412336903" title="Add a MIDI file to a player queue.">fluid_player_add()</a>, load it into memory and call <a class="el" href="group__midi__player.html#ga25d05bfa631e9ff520993a1a59de309a" title="Add a MIDI file to a player queue, from a buffer in memory.">fluid_player_add_mem()</a> instead. Once you have passed a buffer to <a class="el" href="group__midi__player.html#ga25d05bfa631e9ff520993a1a59de309a" title="Add a MIDI file to a player queue, from a buffer in memory.">fluid_player_add_mem()</a>, it is copied, so you may use it again or free it immediately (it is your responsibility to free it if you allocated it).</p>
<div class="fragment"><div class="line"><span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><span class="preprocessor">#include <string.h></span></div>
<div class="line"><span class="preprocessor">#include <fluidsynth.h></span></div>
<div class="line"> </div>
<div class="line"><span class="comment">/* An example midi file */</span></div>
<div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span> MIDIFILE[] = {</div>
<div class="line"> 0x4d, 0x54, 0x68, 0x64, 0x00, 0x00, 0x00, 0x06,</div>
<div class="line"> 0x00, 0x01, 0x00, 0x01, 0x01, 0xe0, 0x4d, 0x54,</div>
<div class="line"> 0x72, 0x6b, 0x00, 0x00, 0x00, 0x20, 0x00, 0x90,</div>
<div class="line"> 0x3c, 0x64, 0x87, 0x40, 0x80, 0x3c, 0x7f, 0x00,</div>
<div class="line"> 0x90, 0x43, 0x64, 0x87, 0x40, 0x80, 0x43, 0x7f,</div>
<div class="line"> 0x00, 0x90, 0x48, 0x64, 0x87, 0x40, 0x80, 0x48,</div>
<div class="line"> 0x7f, 0x83, 0x60, 0xff, 0x2f, 0x00</div>
<div class="line">};</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"> <span class="keywordtype">int</span> i;</div>
<div class="line"> <span class="keywordtype">void</span>* buffer;</div>
<div class="line"> <span class="keywordtype">size_t</span> buffer_len;</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;</div>
<div class="line"> <a class="code" href="group__Types.html#gaf6c718e19d8c9c6632cb8ffac6974d80">fluid_player_t</a>* player;</div>
<div class="line"> <a class="code" href="group__Types.html#gac3706330ce49cac5b7dd079e90d376d8">fluid_audio_driver_t</a>* adriver;</div>
<div class="line"> settings = <a class="code" href="group__settings.html#ga7623af35fb3d1abace21ef7d5b4f4781">new_fluid_settings</a>();</div>
<div class="line"> synth = <a class="code" href="group__synth.html#ga2aab8e0b82dc9fd086849efacb3c1b1b">new_fluid_synth</a>(settings);</div>
<div class="line"> player = <a class="code" href="group__midi__player.html#gaa56e6bd17cc34198296af0f8199062a5">new_fluid_player</a>(synth);</div>
<div class="line"> adriver = <a class="code" href="group__audio__driver.html#ga7c66ef86f0008807bdd955770fca6925">new_fluid_audio_driver</a>(settings, synth);</div>
<div class="line"> <span class="comment">/* process command line arguments */</span></div>
<div class="line"> <span class="keywordflow">for</span> (i = 1; i < argc; i++) {</div>
<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="group__misc.html#gaab23ae9dead8de39d85b45a638e23d6f">fluid_is_soundfont</a>(argv[i])) {</div>
<div class="line"> <a class="code" href="group__soundfont__management.html#ga0ba0bc9d4a19c789f9969cd22d22bf66">fluid_synth_sfload</a>(synth, argv[1], 1);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="comment">/* queue up the in-memory midi file */</span></div>
<div class="line"> <a class="code" href="group__midi__player.html#ga25d05bfa631e9ff520993a1a59de309a">fluid_player_add_mem</a>(player, MIDIFILE, <span class="keyword">sizeof</span>(MIDIFILE));</div>
<div class="line"> <span class="comment">/* play the midi file */</span></div>
<div class="line"> <a class="code" href="group__midi__player.html#ga80cc6b4c4a81696a2d07466f3da6d6b9">fluid_player_play</a>(player);</div>
<div class="line"> <span class="comment">/* wait for playback termination */</span></div>
<div class="line"> <a class="code" href="group__midi__player.html#ga6a953d057b72855d2e366d324a5d04e0">fluid_player_join</a>(player);</div>
<div class="line"> <span class="comment">/* cleanup */</span></div>
<div class="line"> <a class="code" href="group__audio__driver.html#ga9c6f54ffa43a8ca482aca81582316f5a">delete_fluid_audio_driver</a>(adriver);</div>
<div class="line"> <a class="code" href="group__midi__player.html#ga9e655b26be62b17c59319a287ef382f3">delete_fluid_player</a>(player);</div>
<div class="line"> <a class="code" href="group__synth.html#gab42ea6e25476be548deb428c839d7d2b">delete_fluid_synth</a>(synth);</div>
<div class="line"> <a class="code" href="group__settings.html#gabd13a1e869bfaaaebfc58a72af5a66ac">delete_fluid_settings</a>(settings);</div>
<div class="line"> <span class="keywordflow">return</span> 0;</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__Types_html_gaf6c718e19d8c9c6632cb8ffac6974d80"><div class="ttname"><a href="group__Types.html#gaf6c718e19d8c9c6632cb8ffac6974d80">fluid_player_t</a></div><div class="ttdeci">struct _fluid_player_t fluid_player_t</div><div class="ttdoc">MIDI player instance.</div><div class="ttdef"><b>Definition:</b> types.h:47</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__player_html_ga25d05bfa631e9ff520993a1a59de309a"><div class="ttname"><a href="group__midi__player.html#ga25d05bfa631e9ff520993a1a59de309a">fluid_player_add_mem</a></div><div class="ttdeci">int fluid_player_add_mem(fluid_player_t *player, const void *buffer, size_t len)</div><div class="ttdoc">Add a MIDI file to a player queue, from a buffer in memory.</div><div class="ttdef"><b>Definition:</b> fluid_midi.c:1944</div></div>
<div class="ttc" id="agroup__midi__player_html_ga6a953d057b72855d2e366d324a5d04e0"><div class="ttname"><a href="group__midi__player.html#ga6a953d057b72855d2e366d324a5d04e0">fluid_player_join</a></div><div class="ttdeci">int fluid_player_join(fluid_player_t *player)</div><div class="ttdoc">Wait for a MIDI player until the playback has been stopped.</div><div class="ttdef"><b>Definition:</b> fluid_midi.c:2589</div></div>
<div class="ttc" id="agroup__midi__player_html_ga80cc6b4c4a81696a2d07466f3da6d6b9"><div class="ttname"><a href="group__midi__player.html#ga80cc6b4c4a81696a2d07466f3da6d6b9">fluid_player_play</a></div><div class="ttdeci">int fluid_player_play(fluid_player_t *player)</div><div class="ttdoc">Activates play mode for a MIDI player if not already playing.</div><div class="ttdef"><b>Definition:</b> fluid_midi.c:2294</div></div>
<div class="ttc" id="agroup__midi__player_html_ga9e655b26be62b17c59319a287ef382f3"><div class="ttname"><a href="group__midi__player.html#ga9e655b26be62b17c59319a287ef382f3">delete_fluid_player</a></div><div class="ttdeci">void delete_fluid_player(fluid_player_t *player)</div><div class="ttdoc">Delete a MIDI player instance.</div><div class="ttdef"><b>Definition:</b> fluid_midi.c:1768</div></div>
<div class="ttc" id="agroup__midi__player_html_gaa56e6bd17cc34198296af0f8199062a5"><div class="ttname"><a href="group__midi__player.html#gaa56e6bd17cc34198296af0f8199062a5">new_fluid_player</a></div><div class="ttdeci">fluid_player_t * new_fluid_player(fluid_synth_t *synth)</div><div class="ttdoc">Create a new MIDI player.</div><div class="ttdef"><b>Definition:</b> fluid_midi.c:1678</div></div>
<div class="ttc" id="agroup__misc_html_gaab23ae9dead8de39d85b45a638e23d6f"><div class="ttname"><a href="group__misc.html#gaab23ae9dead8de39d85b45a638e23d6f">fluid_is_soundfont</a></div><div class="ttdeci">int fluid_is_soundfont(const char *filename)</div><div class="ttdoc">Check if a file is a SoundFont file.</div><div class="ttdef"><b>Definition:</b> fluid_sffile.c:269</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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