example.c

Example producing short random music with FluidSynth

/*

  An example of how to use FluidSynth.

  To compile it on Linux:
  $ gcc -o example example.c `pkg-config fluidsynth --libs`

  To compile it on Windows:
    ...    


  Author: Peter Hanappe.
  This code is in the public domain. Use it as you like.

*/

#include <fluidsynth.h>

#if defined(WIN32)
#include <windows.h>
#define sleep(_t) Sleep(_t * 1000)
#else
#include <stdlib.h>
#endif

int main(int argc, char** argv)
{
  fluid_settings_t* settings;
  fluid_synth_t* synth;
  fluid_audio_driver_t* adriver;
  int sfont_id;
  int i, key;

  /* Create the settings. */
  settings = new_fluid_settings();

  /* Change the settings if necessary*/

  /* Create the synthesizer. */
  synth = new_fluid_synth(settings);

  /* Create the audio driver. The synthesizer starts playing as soon
     as the driver is created. */
  adriver = new_fluid_audio_driver(settings, synth);

  /* Load a SoundFont and reset presets (so that new instruments
   * get used from the SoundFont) */
  sfont_id = fluid_synth_sfload(synth, "example.sf2", 1);

  /* Initialize the random number generator */
  srand(getpid());

  for (i = 0; i < 12; i++) {

    /* Generate a random key */
    key = 60 + (int) (12.0f * rand() / (float) RAND_MAX);

    /* Play a note */
    fluid_synth_noteon(synth, 0, key, 80);

    /* Sleep for 1 second */
    sleep(1);

    /* Stop the note */
    fluid_synth_noteoff(synth, 0, key);
  }

  /* Clean up */
  delete_fluid_audio_driver(adriver);
  delete_fluid_synth(synth);
  delete_fluid_settings(settings);

  return 0;
}