shithub: aubio

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ref: ba303e87240cc5732d8cfa173deca978c34617c2
parent: 4b9443c4b40d2401cd1ad43e51cf84f438eec335
author: Paul Brossier <piem@piem.org>
date: Fri Jul 1 11:27:47 EDT 2016 

examples/aubionotes.c: use note aubio_notes object


--- a/examples/aubionotes.c
+++ b/examples/aubionotes.c
@@ -18,7 +18,6 @@
 
 */
 
-#define AUBIO_UNSTABLE 1 // for fvec_median
 #include "utils.h"
 #define PROG_HAS_PITCH 1
 #define PROG_HAS_ONSET 1
@@ -26,72 +25,20 @@
 // TODO add PROG_HAS_OUTPUT
 #include "parse_args.h"
 
-uint_t median = 6;
+aubio_notes_t *notes;
+uint_t lastnote = 0;
 
-fvec_t *note_buffer;
-fvec_t *note_buffer2;
-
-smpl_t curnote = 0.;
-smpl_t newnote = 0.;
-uint_t isready = 0;
-
-aubio_pitch_t *pitch;
-aubio_onset_t *o;
-fvec_t *onset;
-fvec_t *pitch_obuf;
-
-/** append new note candidate to the note_buffer and return filtered value. we
- * need to copy the input array as fvec_median destroy its input data.*/
-void note_append (fvec_t * note_buffer, smpl_t curnote);
-uint_t get_note (fvec_t * note_buffer, fvec_t * note_buffer2);
-
 void process_block (fvec_t *ibuf, fvec_t *obuf)
 {
-  smpl_t new_pitch, curlevel;
-  fvec_zeros(obuf);
-  aubio_onset_do(o, ibuf, onset);
-
-  aubio_pitch_do (pitch, ibuf, pitch_obuf);
-  new_pitch = fvec_get_sample(pitch_obuf, 0);
-  if(median){
-    note_append(note_buffer, new_pitch);
+  aubio_notes_do (notes, ibuf, obuf);
+  // did we get a note off?
+  if (obuf->data[2] != 0) {
+    send_noteon(obuf->data[2], 0);
   }
-
-  /* curlevel is negatif or 1 if silence */
-  curlevel = aubio_level_detection(ibuf, silence_threshold);
-  if (fvec_get_sample(onset, 0)) {
-    /* test for silence */
-    if (curlevel == 1.) {
-      if (median) isready = 0;
-      /* send note off */
-      send_noteon(curnote,0);
-    } else {
-      if (median) {
-        isready = 1;
-      } else {
-        /* kill old note */
-        send_noteon(curnote,0);
-        /* get and send new one */
-        send_noteon(new_pitch,127+(int)floor(curlevel));
-        curnote = new_pitch;
-      }
-    }
-  } else {
-    if (median) {
-      if (isready > 0)
-        isready++;
-      if (isready == median)
-      {
-        /* kill old note */
-        send_noteon(curnote,0);
-        newnote = get_note(note_buffer, note_buffer2);
-        curnote = newnote;
-        /* get and send new one */
-        if (curnote>45){
-          send_noteon(curnote,127+(int)floor(curlevel));
-        }
-      }
-    } // if median
+  // did we get a note on?
+  if (obuf->data[0] != 0) {
+    send_noteon(obuf->data[0], obuf->data[1]);
+    lastnote = (uint_t) floor(obuf->data[0]);
   }
 }
 
@@ -100,27 +47,6 @@
   //if (verbose) outmsg("%f\n",pitch_obuf->data[0]);
 }
 
-void
-note_append (fvec_t * note_buffer, smpl_t curnote)
-{
-  uint_t i = 0;
-  for (i = 0; i < note_buffer->length - 1; i++) {
-    note_buffer->data[i] = note_buffer->data[i + 1];
-  }
-  note_buffer->data[note_buffer->length - 1] = curnote;
-  return;
-}
-
-uint_t
-get_note (fvec_t * note_buffer, fvec_t * note_buffer2)
-{
-  uint_t i;
-  for (i = 0; i < note_buffer->length; i++) {
-    note_buffer2->data[i] = note_buffer->data[i];
-  }
-  return fvec_median (note_buffer2);
-}
-
 int main(int argc, char **argv) {
   examples_common_init(argc,argv);
 
@@ -136,30 +62,14 @@
   verbmsg ("hop_size: %d, ", hop_size);
   verbmsg ("tolerance: %f\n", pitch_tolerance);
 
-  o = new_aubio_onset (onset_method, buffer_size, hop_size, samplerate);
-  if (onset_threshold != 0.) aubio_onset_set_threshold (o, onset_threshold);
-  onset = new_fvec (1);
+  notes = new_aubio_notes ("default", buffer_size, hop_size, samplerate);
 
-  pitch = new_aubio_pitch (pitch_method, buffer_size * 4, hop_size, samplerate);
-  if (pitch_tolerance != 0.) aubio_pitch_set_tolerance (pitch, pitch_tolerance);
-  pitch_obuf = new_fvec (1);
-
-  if (median) {
-      note_buffer = new_fvec (median);
-      note_buffer2 = new_fvec (median);
-  }
-
   examples_common_process((aubio_process_func_t)process_block, process_print);
 
   // send a last note off
-  send_noteon (curnote, 0);
+  send_noteon (lastnote, 0);
 
-  del_aubio_pitch (pitch);
-  if (median) {
-      del_fvec (note_buffer);
-      del_fvec (note_buffer2);
-  }
-  del_fvec (pitch_obuf);
+  del_aubio_notes (notes);
 
   examples_common_del();
   return 0;