beattracking.{c,h},tempo.{c,h}: add aubio_beattracking_get_confidence

diff --git a/examples/tests/test-beattracking.c b/examples/tests/test-beattracking.c
index 20fc6b0..2812a3b 100644 (file)
--- a/examples/tests/test-beattracking.c
+++ b/examples/tests/test-beattracking.c
@@ -12,7 +12,7 @@ int main(){
 
         uint_t i = 0;
 
-        smpl_t curtempo;
+        smpl_t curtempo, curtempoconf;
 
         while (i < 10) {
           aubio_beattracking_do(tempo,in,out);
@@ -21,6 +21,11 @@ int main(){
             fprintf(stdout,"%f\n",curtempo);
             return 1;
           }
+          curtempoconf = aubio_beattracking_get_confidence(tempo);
+          if (curtempoconf != 0.) {
+            fprintf(stdout,"%f\n",curtempo);
+            return 1;
+          }
           i++;
         };
 

diff --git a/examples/tests/test-tempo.c b/examples/tests/test-tempo.c
index 84e1e32..5390672 100644 (file)
--- a/examples/tests/test-tempo.c
+++ b/examples/tests/test-tempo.c
@@ -9,13 +9,19 @@ int main(){
         aubio_tempo_t * o  = new_aubio_tempo(aubio_onset_complex, win_s, win_s/4, channels);
         uint_t i = 0;
 
-        smpl_t curtempo;
+        smpl_t curtempo, curtempoconf;
 
         while (i < 1000) {
           aubio_tempo(o,in,out);
           curtempo = aubio_tempo_get_bpm(o);
           if (curtempo != 0.) {
             fprintf(stdout,"%f\n",curtempo);
+            return 1;
+          }
+          curtempoconf = aubio_beattracking_get_confidence(o);
+          if (curtempoconf != 0.) {
+            fprintf(stdout,"%f\n",curtempo);
+            return 1;
           }
           i++;
         };

diff --git a/src/beattracking.c b/src/beattracking.c
index 6d30ee0..e67a608 100644 (file)
--- a/src/beattracking.c
+++ b/src/beattracking.c
@@ -460,3 +460,8 @@ smpl_t aubio_beattracking_get_bpm(aubio_beattracking_t * bt) {
           return 0.;
         }
 }
+
+smpl_t aubio_beattracking_get_confidence(aubio_beattracking_t * bt) {
+        if (bt->gp) return vec_max(bt->acfout);
+        else return 0.;
+}

diff --git a/src/beattracking.h b/src/beattracking.h
index 78da1fc..c6964e9 100644 (file)
--- a/src/beattracking.h
+++ b/src/beattracking.h
@@ -68,6 +68,15 @@ void aubio_beattracking_do(aubio_beattracking_t * bt, fvec_t * dfframes, fvec_t
 
 */
 smpl_t aubio_beattracking_get_bpm(aubio_beattracking_t * bt);
+/** get current tempo confidence 
+
+  \param bt beat tracking object
+
+  Returns the confidence with which the tempo has been observed, 0 if no
+  consistent value is found.
+
+*/
+smpl_t aubio_beattracking_get_confidence(aubio_beattracking_t * bt);
 /** delete beat tracking object
 
   \param p beat tracking object

diff --git a/src/tempo.c b/src/tempo.c
index 328a7e7..4eb56f2 100644 (file)
--- a/src/tempo.c
+++ b/src/tempo.c
@@ -127,6 +127,10 @@ smpl_t aubio_tempo_get_bpm(aubio_tempo_t *o) {
   return aubio_beattracking_get_bpm(o->bt);
 }
 
+smpl_t aubio_tempo_get_confidence(aubio_tempo_t *o) {
+  return aubio_beattracking_get_confidence(o->bt);
+}
+
 void del_aubio_tempo (aubio_tempo_t *o)
 {
   del_aubio_onsetdetection(o->od);

diff --git a/src/tempo.h b/src/tempo.h
index f3faf6e..ef30218 100644 (file)
--- a/src/tempo.h
+++ b/src/tempo.h
@@ -58,6 +58,16 @@ void aubio_tempo_set_threshold(aubio_tempo_t * o, smpl_t threshold);
 */
 smpl_t aubio_tempo_get_bpm(aubio_tempo_t * bt);
 
+/** get current tempo confidence
+
+  \param bt beat tracking object
+
+  Returns the confidence with which the tempo has been observed, 0 if no
+  consistent value is found.
+
+*/
+smpl_t aubio_tempo_get_confidence(aubio_tempo_t * bt);
+
 /** delete tempo detection object */
 void del_aubio_tempo(aubio_tempo_t * o);
 

diff --git a/swig/aubio.i b/swig/aubio.i
index 7810f61..c4a48fc 100644 (file)
--- a/swig/aubio.i
+++ b/swig/aubio.i
@@ -257,6 +257,8 @@ void aubio_tss_do(aubio_tss_t *s, cvec_t * input, cvec_t * trans, cvec_t * stead
 aubio_beattracking_t * new_aubio_beattracking(uint_t winlen, uint_t channels);
 void aubio_beattracking_do(aubio_beattracking_t * bt, fvec_t * dfframes, fvec_t * out);
 void del_aubio_beattracking(aubio_beattracking_t * p);
+smpl_t aubio_beattracking_get_bpm(aubio_beattracking_t * p);
+smpl_t aubio_beattracking_get_confidence(aubio_beattracking_t * p);