text: #include <aubio.h>
  #include "utils_tests.h"
  
  int test_wrong_params(void);
  
  int main (int argc, char **argv)
  {
    uint_t err = 0;
    if (argc < 2) {
      err = 2;
      PRINT_WRN("no arguments, running tests\n");
      err = test_wrong_params();
      PRINT_MSG("usage: %s <source_path> [samplerate] [hop_size]\n", argv[0]);
      return err;
    }
    uint_t samplerate = 0;
    uint_t win_s = 1024; // window size
    uint_t hop_size = win_s / 4;
    uint_t n_frames = 0, read = 0;
    if ( argc >= 3 ) samplerate = atoi(argv[2]);
    if ( argc >= 4 ) hop_size = atoi(argv[3]);
  
    char_t *source_path = argv[1];
    aubio_source_t * source = new_aubio_source(source_path, samplerate, hop_size);
    if (!source) { err = 1; goto beach; }
  
    if (samplerate == 0 ) samplerate = aubio_source_get_samplerate(source);
  
    // create some vectors
    fvec_t * in = new_fvec (hop_size); // input audio buffer
    fvec_t * out = new_fvec (2); // output position
  
    // create onset object
    aubio_onset_t * o = new_aubio_onset("default", win_s, hop_size, samplerate);
  
    do {
      // put some fresh data in input vector
      aubio_source_do(source, in, &read);
      // execute onset
      aubio_onset_do(o,in,out);
      // do something with the onsets
      if (out->data[0] != 0) {
        PRINT_MSG("onset at %.3fms, %.3fs, frame %d\n",
            aubio_onset_get_last_ms(o), aubio_onset_get_last_s(o),
            aubio_onset_get_last(o));
      }
      n_frames += read;
    } while ( read == hop_size );
  
    PRINT_MSG("read %.2fs, %d frames at %dHz (%d blocks) from %s\n",
        n_frames * 1. / samplerate,
        n_frames, samplerate,
        n_frames / hop_size, source_path);
  
    // clean up memory
    del_aubio_source(source);
    del_aubio_onset(o);
    del_fvec(in);
    del_fvec(out);
  beach:
    aubio_cleanup();
  
    return err;
  }
  
  int test_wrong_params(void)
  {
    uint_t win_size = 1024;
    uint_t hop_size = win_size / 2;
    uint_t samplerate = 44100;
    // hop_size < 1
    if (new_aubio_onset("default", 5, 0, samplerate)) return 1;
  
    // buf_size < 2
    if (new_aubio_onset("default", 1, 1, samplerate)) return 1;
  
    // buf_size < hop_size
    if (new_aubio_onset("default", hop_size, win_size, samplerate)) return 1;
  
    // samplerate < 1
    if (new_aubio_onset("default", 1024, 512, 0)) return 1;
  
    // specdesc creation failed
    if (new_aubio_onset("abcd", win_size, win_size/2, samplerate)) return 1;
  
    aubio_onset_t *o;
  
    // pv creation might fail
    o = new_aubio_onset("default", 5, 2, samplerate);
    if (o) del_aubio_onset(o);
  
    o = new_aubio_onset("default", win_size, hop_size, samplerate);
    if (!aubio_onset_set_default_parameters(o, "wrong_type")) return 1;
    del_aubio_onset(o);
  
    return run_on_default_source(main);
  }
  