tempo/test-tempo.c

#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) {
    PRINT_WRN("no arguments, running tests\n");
    err = test_wrong_params();
    PRINT_MSG("usage: %s <source_path> [samplerate] [win_size] [hop_size]\n",
        argv[0]);
    return err;
  }
  uint_t samplerate = 0;
  if ( argc >= 3 ) samplerate = atoi(argv[2]);
  uint_t win_size = 1024; // window size
  if ( argc >= 4 ) win_size = atoi(argv[3]);
  uint_t hop_size = win_size / 4;
  if ( argc >= 5 ) hop_size = atoi(argv[4]);
  uint_t n_frames = 0, read = 0;

  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 (1); // output position

  // create tempo object
  aubio_tempo_t * o = new_aubio_tempo("default", win_size, hop_size,
      samplerate);

  if (!o) { err = 1; goto beach_tempo; }

  do {
    // put some fresh data in input vector
    aubio_source_do(source, in, &read);
    // execute tempo
    aubio_tempo_do(o,in,out);
    // do something with the beats
    if (out->data[0] != 0) {
      PRINT_MSG("beat at %.3fms, %.3fs, frame %d, %.2f bpm "
          "with confidence %.2f\n",
          aubio_tempo_get_last_ms(o), aubio_tempo_get_last_s(o),
          aubio_tempo_get_last(o), aubio_tempo_get_bpm(o),
          aubio_tempo_get_confidence(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_tempo(o);
beach_tempo:
  del_fvec(in);
  del_fvec(out);
  del_aubio_source(source);
beach:
  aubio_cleanup();

  return err;
}

int test_wrong_params(void)
{
  uint_t win_size = 1024;
  uint_t hop_size = 256;
  uint_t samplerate = 44100;
  aubio_tempo_t *t;
  fvec_t* in, *out;
  uint_t i;

  // test wrong method fails
  if (new_aubio_tempo("undefined", win_size, hop_size, samplerate)) return 1;

  // test hop > win fails
  if (new_aubio_tempo("default", hop_size, win_size, samplerate)) return 1;

  // test null hop_size fails
  if (new_aubio_tempo("default", win_size, 0, samplerate)) return 1;

  // test 1 buf_size fails
  if (new_aubio_tempo("default", 1, 1, samplerate)) return 1;

  // test null samplerate fails
  if (new_aubio_tempo("default", win_size, hop_size, 0)) return 1;

  // test short sizes workaround
  t = new_aubio_tempo("default", 2048, 2048, 500);
  if (!t) return 1;

  del_aubio_tempo(t);

  t = new_aubio_tempo("default", win_size, hop_size, samplerate);
  if (!t) return 1;

  in = new_fvec(hop_size);
  out = new_fvec(1);

  // up to step = (next_power_of_two(5.8 * samplerate / hop_size ) / 4 )
  for (i = 0; i < 256 + 1; i++)
  {
    aubio_tempo_do(t,in,out);
    PRINT_MSG("beat at %.3fms, %.3fs, frame %d, %.2f bpm "
        "with confidence %.2f, was tatum %d\n",
        aubio_tempo_get_last_ms(t), aubio_tempo_get_last_s(t),
        aubio_tempo_get_last(t), aubio_tempo_get_bpm(t),
        aubio_tempo_get_confidence(t), aubio_tempo_was_tatum(t));
  }

  del_aubio_tempo(t);
  del_fvec(in);
  del_fvec(out);

  return run_on_default_source(main);
}