Added ability to actually play a sound with the synth

src/main.cpp

@@ -1,5 +1,97 @@
+/* FluidSynth Simple - An example of using fluidsynth
+ *
+ * This code is in the public domain.
+ *
+ * To compile:
+ *   gcc -g -O -o fluidsynth_simple fluidsynth_simple.c -lfluidsynth
+ *
+ * To run
+ *   fluidsynth_simple soundfont
+ *
+ * [Peter Hanappe]
+ */
+
+
+#include <stdio.h>
 #include <fluidsynth.h>
 
-int main(int argc, char** argv) {
+int main(int argc, char **argv)
-    return 0;
+{
+    fluid_settings_t *settings;
+    fluid_synth_t *synth = NULL;
+    fluid_audio_driver_t *adriver = NULL;
+    int err = 0;
+
+    if(argc != 2)
+    {
+        fprintf(stderr, "Usage: fluidsynth_simple [soundfont]\n");
+        return 1;
+    }
+
+    /* Create the settings object. This example uses the default
+     * values for the settings. */
+    settings = new_fluid_settings();
+
+    if(settings == NULL)
+    {
+        fprintf(stderr, "Failed to create the settings\n");
+        err = 2;
+        goto cleanup;
+    }
+
+    /* Create the synthesizer */
+    synth = new_fluid_synth(settings);
+
+    if(synth == NULL)
+    {
+        fprintf(stderr, "Failed to create the synthesizer\n");
+        err = 3;
+        goto cleanup;
+    }
+
+    /* Load the soundfont */
+    if(fluid_synth_sfload(synth, argv[1], 1) == -1)
+    {
+        fprintf(stderr, "Failed to load the SoundFont\n");
+        err = 4;
+        goto cleanup;
+    }
+
+    /* Create the audio driver. As soon as the audio driver is
+     * created, the synthesizer can be played. */
+    adriver = new_fluid_audio_driver(settings, synth);
+
+    if(adriver == NULL)
+    {
+        fprintf(stderr, "Failed to create the audio driver\n");
+        err = 5;
+        goto cleanup;
+    }
+
+    /* Play a note */
+    fluid_synth_noteon(synth, 0, 60, 100);
+
+    printf("Press \"Enter\" to stop: ");
+    fgetc(stdin);
+    printf("done\n");
+
+
+cleanup:
+
+    if(adriver)
+    {
+        delete_fluid_audio_driver(adriver);
+    }
+
+    if(synth)
+    {
+        delete_fluid_synth(synth);
+    }
+
+    if(settings)
+    {
+        delete_fluid_settings(settings);
+    }
+
+    return err;
 }