fluidsynth/doc/fluidsynth_simple.c

/* 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) 
{
	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;
}