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<div class="title">fluidsynth_sfload_mem.c</div> </div>
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<p>Example of how read a soundfont from memory (advanced users only)</p>
<div class="fragment"><div class="line"><span class="comment">/*</span></div>
<div class="line"><span class="comment"> * This is a C99 program that demonstrates how to load a soundfont from memory.</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * It only gives a brief overview on how to achieve this with fluidsynth's API.</span></div>
<div class="line"><span class="comment"> * Although it should compile, it's highly incomplete, as the details of it's</span></div>
<div class="line"><span class="comment"> * implementation depend on the users needs.</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#include <stdio.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="keywordtype">void</span> *my_open(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename)</div>
<div class="line">{</div>
<div class="line"> <span class="keywordtype">void</span> *p;</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span>(filename[0] != <span class="charliteral">'&'</span>)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordflow">return</span> NULL;</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> sscanf(filename, <span class="stringliteral">"&%p"</span>, &p);</div>
<div class="line"> <span class="keywordflow">return</span> p;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> my_read(<span class="keywordtype">void</span> *buf, <span class="keywordtype">int</span> count, <span class="keywordtype">void</span> *handle)</div>
<div class="line">{</div>
<div class="line"> <span class="comment">// NYI</span></div>
<div class="line"> <span class="keywordflow">return</span> <a name="a0"></a><a class="code" href="group__misc.html#gae4efb1c3ce0d550c922504adfb0fb886">FLUID_OK</a>;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> my_seek(<span class="keywordtype">void</span> *handle, <span class="keywordtype">long</span> offset, <span class="keywordtype">int</span> origin)</div>
<div class="line">{</div>
<div class="line"> <span class="comment">// NYI</span></div>
<div class="line"> <span class="keywordflow">return</span> <a class="code" href="group__misc.html#gae4efb1c3ce0d550c922504adfb0fb886">FLUID_OK</a>;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> my_close(<span class="keywordtype">void</span> *handle)</div>
<div class="line">{</div>
<div class="line"> <span class="comment">// NYI</span></div>
<div class="line"> <span class="keywordflow">return</span> <a class="code" href="group__misc.html#gae4efb1c3ce0d550c922504adfb0fb886">FLUID_OK</a>;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">long</span> my_tell(<span class="keywordtype">void</span> *handle)</div>
<div class="line">{</div>
<div class="line"> <span class="comment">// NYI</span></div>
<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> main()</div>
<div class="line">{</div>
<div class="line"> <span class="keywordtype">int</span> err = 0;</div>
<div class="line"> </div>
<div class="line"> <a class="code" href="group__Types.html#gaa363402d3c77333b0f070ba531d034ba">fluid_settings_t</a> *settings = <a name="a1"></a><a class="code" href="group__settings.html#ga7623af35fb3d1abace21ef7d5b4f4781">new_fluid_settings</a>();</div>
<div class="line"> <a class="code" href="group__Types.html#gae265f10ae174a13afe010de50d87e1a4">fluid_synth_t</a> *synth = <a name="a2"></a><a class="code" href="group__synth.html#ga2aab8e0b82dc9fd086849efacb3c1b1b">new_fluid_synth</a>(settings);</div>
<div class="line"> </div>
<div class="line"> <a class="code" href="group__Types.html#gad3e880056d2262e48468719757b3f5e6">fluid_sfloader_t</a> *my_sfloader = <a name="a3"></a><a class="code" href="group__soundfont__loader.html#ga35b21cdddb636023b34aa37012e66e0c">new_fluid_defsfloader</a>(settings);</div>
<div class="line"> <a name="a4"></a><a class="code" href="group__soundfont__loader.html#gaaae6deee082746661dea7266f170a8da">fluid_sfloader_set_callbacks</a>(my_sfloader,</div>
<div class="line"> my_open,</div>
<div class="line"> my_read,</div>
<div class="line"> my_seek,</div>
<div class="line"> my_tell,</div>
<div class="line"> my_close);</div>
<div class="line"> <a name="a5"></a><a class="code" href="group__soundfont__loader.html#gaa0125923ad997a88004679e0aa33e4f0">fluid_synth_add_sfloader</a>(synth, my_sfloader);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> <span class="keywordtype">char</span> abused_filename[64];</div>
<div class="line"> <span class="keyword">const</span> <span class="keywordtype">void</span> *pointer_to_sf2_in_mem = 0x1234Beef; <span class="comment">// some pointer to where the soundfont shall be loaded from</span></div>
<div class="line"> sprintf(abused_filename, <span class="stringliteral">"&%p"</span>, pointer_to_sf2_in_mem);</div>
<div class="line"> </div>
<div class="line"> <span class="keywordtype">int</span> <span class="keywordtype">id</span> = <a name="a6"></a><a class="code" href="group__soundfont__management.html#ga0ba0bc9d4a19c789f9969cd22d22bf66">fluid_synth_sfload</a>(synth, abused_filename, 0);</div>
<div class="line"> <span class="comment">/* now my_open() will be called with abused_filename and should have opened the memory region */</span></div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span>(<span class="keywordtype">id</span> == <a name="a7"></a><a class="code" href="group__misc.html#ga90e8bdbc5a507bbfa5c45bac85a63a61">FLUID_FAILED</a>)</div>
<div class="line"> {</div>
<div class="line"> puts(<span class="stringliteral">"oops"</span>);</div>
<div class="line"> err = -1;</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">/*</span></div>
<div class="line"><span class="comment"> * ~~~ Do your daily business here ~~~</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"> </div>
<div class="line">cleanup:</div>
<div class="line"> <span class="comment">/* deleting the synth also deletes my_sfloader */</span></div>
<div class="line"> <a name="a8"></a><a class="code" href="group__synth.html#gab42ea6e25476be548deb428c839d7d2b">delete_fluid_synth</a>(synth);</div>
<div class="line"> </div>
<div class="line"> <a name="a9"></a><a class="code" href="group__settings.html#gabd13a1e869bfaaaebfc58a72af5a66ac">delete_fluid_settings</a>(settings);</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_gad3e880056d2262e48468719757b3f5e6"><div class="ttname"><a href="group__Types.html#gad3e880056d2262e48468719757b3f5e6">fluid_sfloader_t</a></div><div class="ttdeci">struct _fluid_sfloader_t fluid_sfloader_t</div><div class="ttdoc">SoundFont loader plugin.</div><div class="ttdef"><b>Definition:</b> types.h:40</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__misc_html_ga90e8bdbc5a507bbfa5c45bac85a63a61"><div class="ttname"><a href="group__misc.html#ga90e8bdbc5a507bbfa5c45bac85a63a61">FLUID_FAILED</a></div><div class="ttdeci">#define FLUID_FAILED</div><div class="ttdoc">Value that indicates failure, used by most libfluidsynth functions.</div><div class="ttdef"><b>Definition:</b> misc.h:64</div></div>
<div class="ttc" id="agroup__misc_html_gae4efb1c3ce0d550c922504adfb0fb886"><div class="ttname"><a href="group__misc.html#gae4efb1c3ce0d550c922504adfb0fb886">FLUID_OK</a></div><div class="ttdeci">#define FLUID_OK</div><div class="ttdoc">Value that indicates success, used by most libfluidsynth functions.</div><div class="ttdef"><b>Definition:</b> misc.h:55</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__loader_html_ga35b21cdddb636023b34aa37012e66e0c"><div class="ttname"><a href="group__soundfont__loader.html#ga35b21cdddb636023b34aa37012e66e0c">new_fluid_defsfloader</a></div><div class="ttdeci">fluid_sfloader_t * new_fluid_defsfloader(fluid_settings_t *settings)</div><div class="ttdoc">Creates a default soundfont2 loader that can be used with fluid_synth_add_sfloader().</div><div class="ttdef"><b>Definition:</b> fluid_defsfont.c:60</div></div>
<div class="ttc" id="agroup__soundfont__loader_html_gaa0125923ad997a88004679e0aa33e4f0"><div class="ttname"><a href="group__soundfont__loader.html#gaa0125923ad997a88004679e0aa33e4f0">fluid_synth_add_sfloader</a></div><div class="ttdeci">void fluid_synth_add_sfloader(fluid_synth_t *synth, fluid_sfloader_t *loader)</div><div class="ttdoc">Add a SoundFont loader to the synth.</div><div class="ttdef"><b>Definition:</b> fluid_synth.c:5528</div></div>
<div class="ttc" id="agroup__soundfont__loader_html_gaaae6deee082746661dea7266f170a8da"><div class="ttname"><a href="group__soundfont__loader.html#gaaae6deee082746661dea7266f170a8da">fluid_sfloader_set_callbacks</a></div><div class="ttdeci">int fluid_sfloader_set_callbacks(fluid_sfloader_t *loader, fluid_sfloader_callback_open_t open, fluid_sfloader_callback_read_t read, fluid_sfloader_callback_seek_t seek, fluid_sfloader_callback_tell_t tell, fluid_sfloader_callback_close_t close)</div><div class="ttdoc">Set custom callbacks to be used upon soundfont loading.</div><div class="ttdef"><b>Definition:</b> fluid_sfont.c:150</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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