ref: bd2f2ab2331c131297d1e63ace91962eb5e4a9e3
parent: 84941cbd7cf1e0bcd0a04ce76f18abdc248a462e
author: Paul Brossier <piem@altern.org>
date: Mon Apr 11 12:37:51 EDT 2005
merged commmon code between aubionotes.c and aubioonset.c into utils.c
--- a/examples/aubionotes.c
+++ b/examples/aubionotes.c
@@ -16,121 +16,11 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <getopt.h>
-#include <unistd.h>
-#include <math.h>
-#include "aubio.h"
-#include "aubioext.h"
#include "utils.h"
-/* settings */
-const char * output_filename = NULL;
-const char * input_filename = NULL;
-const char * onset_filename = "/usr/share/sounds/aubio/woodblock.aiff";
-int verbose = 0;
-int usejack = 0;
-int usedoubled = 1;
-int usemidi = 1;
-int median = 0;
-
-/* energy,specdiff,hfc,complexdomain,phase */
-aubio_onsetdetection_type type_onset = hfc;
-aubio_onsetdetection_type type_onset2 = complexdomain;
-smpl_t threshold = 0.3;
-smpl_t threshold2 = -90.;
-uint_t buffer_size = 1024;
-uint_t overlap_size = 512;
-uint_t channels = 1;
-uint_t samplerate = 44100;
-
-/* global objects */
-int frames;
-aubio_pvoc_t * pv;
-fvec_t * ibuf;
-fvec_t * obuf;
-cvec_t * fftgrain;
-fvec_t * woodblock;
-aubio_onsetdetection_t *o;
-aubio_onsetdetection_t *o2;
-fvec_t *onset;
-fvec_t *onset2;
-int isonset = 0;
-aubio_pickpeak_t * parms;
-
-/* pitch objects */
-smpl_t pitch = 0.;
-aubio_pitchdetection_t * pitchdet;
-
-fvec_t * note_buffer = NULL;
-fvec_t * note_buffer2 = NULL;
-uint_t medianfiltlen = 6;
-smpl_t curlevel = 0.;
-smpl_t maxonset = 0.;
-
-/* midi objects */
-aubio_midi_player_t * mplay;
-aubio_midi_driver_t * mdriver;
-aubio_midi_event_t * event;
-
unsigned int pos = 0; /*frames%dspblocksize*/
+uint_t usepitch = 1;
-void send_noteon(aubio_midi_driver_t * d, int pitch, int velo);
-void send_noteon(aubio_midi_driver_t * d, int pitch, int velo)
-{- /* we should check if we use midi here, not jack */
-#if ALSA_SUPPORT
- if (usejack) {- if (velo==0) {- aubio_midi_event_set_type(event,NOTE_OFF);
- } else {- aubio_midi_event_set_type(event,NOTE_ON);
- }
- aubio_midi_event_set_channel(event,0);
- aubio_midi_event_set_pitch(event,pitch);
- aubio_midi_event_set_velocity(event,velo);
- aubio_midi_direct_output(mdriver,event);
- } else
-#endif
- {- if (velo==0) {- outmsg("%f\n",frames*overlap_size/(float)samplerate);- } else {- outmsg("%d\t%f\t",pitch,frames*overlap_size/(float)samplerate);- }
- }
-}
-
-
-/** append new note candidate to the note_buffer and return filtered value. we
- * need to copy the input array as vec_median destroy its input data.*/
-
-void note_append(fvec_t * note_buffer, smpl_t curnote);
-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[0][i] = note_buffer->data[0][i+1];
- }
- note_buffer->data[0][note_buffer->length - 1] = curnote;
- return;
-}
-
-uint_t get_note(fvec_t *note_buffer, fvec_t *note_buffer2);
-uint_t get_note(fvec_t *note_buffer, fvec_t *note_buffer2){- uint_t i = 0;
- for (i = 0; i < note_buffer->length; i++) { - note_buffer2->data[0][i] = note_buffer->data[0][i];
- }
- return vec_median(note_buffer2);
-}
-
-
-smpl_t curnote = 0.;
-smpl_t newnote = 0.;
-uint_t isready = 0;
-
int aubio_process(float **input, float **output, int nframes);
int aubio_process(float **input, float **output, int nframes) {unsigned int i; /*channels*/
@@ -157,65 +47,49 @@
pitch = aubio_pitchdetection(pitchdet,ibuf);
if(median){- newnote = (FLOOR)(bintomidi(pitch,samplerate,buffer_size*4)+.5);
- note_append(note_buffer, newnote);
+ note_append(note_buffer, pitch);
}
/* curlevel is negatif or 1 if silence */
curlevel = aubio_level_detection(ibuf, threshold2);
if (isonset) {- /* test for silence */
- if (curlevel == 1.) {- isonset=0;
- if (median) isready = 0;
- /* send note off */
- send_noteon(mdriver,curnote,0);
- } else {- if (median) {- isready = 1;
- } else {- /* kill old note */
- send_noteon(mdriver,curnote,0);
- //curnote = (int)FLOOR(bintomidi(pitch,samplerate,buffer_size*4) + .5);
- curnote = (int)FLOOR(freqtomidi(pitch) + .5);
- /* get and send new one */
- /*if (curnote<45){- send_noteon(mdriver,curnote,0);
- } else {*/- if (curnote>45){- send_noteon(mdriver,curnote,127+(int)FLOOR(curlevel));
- }
- }
-
- for (pos = 0; pos < overlap_size; pos++){- obuf->data[0][pos] = woodblock->data[0][pos];
- }
- }
- } else {+ /* test for silence */
+ if (curlevel == 1.) {+ isonset=0;
+ 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(pitch,127+(int)FLOOR(curlevel));
+ curnote = pitch;
+ }
+
+ for (pos = 0; pos < overlap_size; pos++){+ obuf->data[0][pos] = woodblock->data[0][pos];
+ }
+ }
+ } else { if (median) {-// if (curlevel != 1) {-// if (bufpos == note_buffer->length)
-// curnote = aubio_getnote(note_buffer);
-// }
-//
- if (isready > 0)
- isready++;
- if (isready == note_buffer->length)
- {- //outmsg("%d, %f\n", isready, curnote);- send_noteon(mdriver,curnote,0);
- /* kill old note */
- newnote = get_note(note_buffer, note_buffer2);
- curnote = newnote;
- /* get and send new one */
- /*if (curnote<45){- send_noteon(mdriver,curnote,0);
- } else {*/- if (curnote>45){- send_noteon(mdriver,curnote,127+(int)FLOOR(curlevel));
- }
- }
- } // 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
for (pos = 0; pos < overlap_size; pos++)
obuf->data[0][pos] = 0.;
}
@@ -227,114 +101,15 @@
return 1;
}
-int main(int argc, char **argv) {-
- aubio_file_t * file = NULL;
- aubio_file_t * fileout = NULL;
-
- aubio_file_t * onsetfile = new_file_ro(onset_filename);
- /* parse command line arguments */
- parse_args(argc, argv);
-
- if(!usejack)
- {- debug("Opening files ...\n");- file = new_file_ro (input_filename);
- file_info(file);
- samplerate = aubio_file_samplerate(file);
- channels = aubio_file_channels(file);
- if (output_filename != NULL)
- fileout = new_file_wo(file, output_filename);
- }
-
- ibuf = new_fvec(overlap_size, channels);
- obuf = new_fvec(overlap_size, channels);
- woodblock = new_fvec(buffer_size,1);
- fftgrain = new_cvec(buffer_size, channels);
-
- aubio_pitchdetection_type mode = yin; // mcomb
- pitchdet = new_aubio_pitchdetection(buffer_size*4, overlap_size, channels, samplerate, mode, freq);
-
-if (median) {- note_buffer = new_fvec(medianfiltlen, 1);
- note_buffer2= new_fvec(medianfiltlen, 1);
+void process_print (void);
+void process_print (void) {+ if (verbose) outmsg("%f\n",pitch);}
- /* read the output sound once */
- file_read(onsetfile, overlap_size, woodblock);
- /* phase vocoder */
- pv = new_aubio_pvoc(buffer_size, overlap_size, channels);
- /* onsets */
- parms = new_aubio_peakpicker(threshold);
- o = new_aubio_onsetdetection(type_onset,buffer_size,channels);
- onset = new_fvec(1, channels);
- if (usedoubled) {- o2 = new_aubio_onsetdetection(type_onset2,buffer_size,channels);
- onset2 = new_fvec(1 , channels);
- }
- if(usejack) {-#ifdef JACK_SUPPORT
- aubio_jack_t * jack_setup;
- debug("Midi init ...\n");- debug("Jack init ...\n");- jack_setup = new_aubio_jack(channels, channels,
- (aubio_process_func_t)aubio_process);
-
- mplay = new_aubio_midi_player();
-
- mdriver = new_aubio_midi_driver("alsa_seq",- (handle_midi_event_func_t)aubio_midi_send_event, mplay);
-
- event = new_aubio_midi_event();
-
- debug("Jack activation ...\n");- aubio_jack_activate(jack_setup);
- debug("Processing (Ctrl+C to quit) ...\n");- pause();
- send_noteon(mdriver,curnote,0);
- aubio_jack_close(jack_setup);
- del_aubio_midi_driver(mdriver);
-#else
- usage(stderr, 1);
- outmsg("Compiled without jack output, exiting.\n");-#endif
-
- } else {- /* phasevoc */
- debug("Processing ...\n");-
- frames = 0;
-
- while (overlap_size == file_read(file, overlap_size, ibuf))
- {- isonset=0;
- aubio_process(ibuf->data, obuf->data, overlap_size);
- if (output_filename != NULL) {- file_write(fileout,overlap_size,obuf);
- }
- frames++;
- }
- send_noteon(mdriver,curnote,0);
-
- debug("Processed %d frames of %d samples.\n", frames, buffer_size);- del_file(file);
-
- if (output_filename != NULL)
- del_file(fileout);
-
- }
-
- del_aubio_pvoc(pv);
- del_fvec(obuf);
- del_fvec(ibuf);
- del_cvec(fftgrain);
- del_aubio_pitchdetection(pitchdet);
- del_fvec(onset);
- if (median) {- del_fvec(note_buffer);
- del_fvec(note_buffer2);
- }
-
+int main(int argc, char **argv) {+ examples_common_init(argc,argv);
+ examples_common_process(aubio_process, process_print);
+ examples_common_del();
debug("End of program.\n");fflush(stderr);
return 0;
--- a/examples/aubioonset.c
+++ b/examples/aubioonset.c
@@ -16,51 +16,12 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <getopt.h>
-#include <unistd.h>
-#include "aubio.h"
-#include "aubioext.h"
#include "utils.h"
-int aubio_process(float **input, float **output, int nframes);
-
-const char * output_filename = NULL;
-const char * input_filename = NULL;
-const char * onset_filename = "/usr/share/sounds/aubio/woodblock.aiff";
-
-/* settings */
-int verbose = 0;
-int usejack = 0;
-int usedoubled = 1;
-
-
-/* energy,specdiff,hfc,complexdomain,phase */
-aubio_onsetdetection_type type_onset = hfc;
-aubio_onsetdetection_type type_onset2 = complexdomain;
-smpl_t threshold = 0.1;
-smpl_t threshold2 = -90.;
-uint_t buffer_size = 1024;
-uint_t overlap_size = 512;
-uint_t channels = 1;
-uint_t samplerate = 44100;
-
-/* global objects */
-aubio_pvoc_t * pv;
-fvec_t * ibuf;
-fvec_t * obuf;
-cvec_t * fftgrain;
-fvec_t * woodblock;
-aubio_onsetdetection_t *o;
-aubio_onsetdetection_t *o2;
-fvec_t *onset;
-fvec_t *onset2;
-int isonset = 0;
-aubio_pickpeak_t * parms;
unsigned int pos = 0; /*frames%dspblocksize*/
+uint_t usepitch = 0;
+int aubio_process(float **input, float **output, int nframes);
int aubio_process(float **input, float **output, int nframes) {unsigned int i; /*channels*/
unsigned int j; /*frames*/
@@ -95,7 +56,6 @@
for (pos = 0; pos < overlap_size; pos++)
obuf->data[0][pos] = 0.;
}
- //aubio_pvoc_rdo(pv,fftgrain, obuf);
/* end of block loop */
pos = -1; /* so it will be zero next j loop */
}
@@ -104,72 +64,8 @@
return 1;
}
-int main(int argc, char **argv) {- int frames;
-
- aubio_file_t * file = NULL;
- aubio_file_t * fileout = NULL;
-
- aubio_file_t * onsetfile = new_file_ro(onset_filename);
- parse_args(argc, argv);
-
- if(!usejack)
- {- debug("Opening files ...\n");- file = new_file_ro (input_filename);
- if (verbose) file_info(file);
- channels = aubio_file_channels(file);
- samplerate = aubio_file_samplerate(file);
- if (output_filename != NULL)
- fileout = new_file_wo(file, output_filename);
- }
-
- ibuf = new_fvec(overlap_size, channels);
- obuf = new_fvec(overlap_size, channels);
- woodblock = new_fvec(buffer_size,1);
- fftgrain = new_cvec(buffer_size, channels);
-
- /* read the output sound once */
- file_read(onsetfile, overlap_size, woodblock);
-
- /* phase vocoder */
- debug("Phase voc init ... \n");- pv = new_aubio_pvoc(buffer_size, overlap_size, channels);
-
- /* onsets */
- parms = new_aubio_peakpicker(threshold);
- o = new_aubio_onsetdetection(type_onset,buffer_size,channels);
- onset = new_fvec(1, channels);
- if (usedoubled) {- o2 = new_aubio_onsetdetection(type_onset2,buffer_size,channels);
- onset2 = new_fvec(1 , channels);
- }
-
- if(usejack) {-#ifdef JACK_SUPPORT
- aubio_jack_t * jack_setup;
- debug("Jack init ...\n");- jack_setup = new_aubio_jack(channels, channels,
- (aubio_process_func_t)aubio_process);
- debug("Jack activation ...\n");- aubio_jack_activate(jack_setup);
- debug("Processing (Ctrl+C to quit) ...\n");- pause();
- aubio_jack_close(jack_setup);
-#else
- outmsg("Compiled without jack output, exiting.");-#endif
-
- } else {- /* phasevoc */
- debug("Processing ...\n");-
- frames = 0;
-
- while (overlap_size == file_read(file, overlap_size, ibuf))
- {- isonset=0;
- aubio_process(ibuf->data, obuf->data, overlap_size);
+void process_print (void);
+void process_print (void) {/* output times in seconds, taking back some
* delay to ensure the label is _before_ the
* actual onset */
@@ -180,26 +76,12 @@
outmsg("%f\n",0.);}
}
- if (output_filename != NULL) {- file_write(fileout,overlap_size,obuf);
- }
- frames++;
- }
+}
- debug("Processed %d frames of %d samples.\n", frames, buffer_size);- del_file(file);
-
- if (output_filename != NULL)
- del_file(fileout);
-
- }
-
- del_aubio_pvoc(pv);
- del_fvec(obuf);
- del_fvec(ibuf);
- del_cvec(fftgrain);
- del_fvec(onset);
-
+int main(int argc, char **argv) {+ examples_common_init(argc,argv);
+ examples_common_process(aubio_process,process_print);
+ examples_common_del();
debug("End of program.\n");fflush(stderr);
return 0;
--- a/examples/utils.c
+++ b/examples/utils.c
@@ -18,7 +18,65 @@
cca_client_t * aubio_cca_client;
#endif /* LADCCA_SUPPORT */
+/* settings */
+const char * output_filename = NULL;
+const char * input_filename = NULL;
+const char * onset_filename = "/usr/share/sounds/aubio/woodblock.aiff";
+int frames = 0;
+int verbose = 0;
+int usejack = 0;
+int usedoubled = 1;
+
+/* energy,specdiff,hfc,complexdomain,phase */
+aubio_onsetdetection_type type_onset = hfc;
+aubio_onsetdetection_type type_onset2 = complexdomain;
+smpl_t threshold = 0.3;
+smpl_t threshold2 = -90.;
+uint_t buffer_size = 1024;
+uint_t overlap_size = 512;
+uint_t channels = 1;
+uint_t samplerate = 44100;
+
+
+aubio_file_t * file = NULL;
+aubio_file_t * fileout = NULL;
+
+aubio_pvoc_t * pv;
+fvec_t * ibuf;
+fvec_t * obuf;
+cvec_t * fftgrain;
+fvec_t * woodblock;
+aubio_onsetdetection_t *o;
+aubio_onsetdetection_t *o2;
+fvec_t *onset;
+fvec_t *onset2;
+int isonset = 0;
+aubio_pickpeak_t * parms;
+
+
+/* pitch objects */
+smpl_t pitch = 0.;
+aubio_pitchdetection_t * pitchdet;
+aubio_pitchdetection_type mode = yin; // mcomb
+uint_t median = 6;
+
+fvec_t * note_buffer = NULL;
+fvec_t * note_buffer2 = NULL;
+smpl_t curlevel = 0.;
+smpl_t maxonset = 0.;
+
+/* midi objects */
+aubio_midi_player_t * mplay;
+aubio_midi_driver_t * mdriver;
+aubio_midi_event_t * event;
+
+smpl_t curnote = 0.;
+smpl_t newnote = 0.;
+uint_t isready = 0;
+
+
+
/* badly redeclare some things */
aubio_onsetdetection_type type_onset;
smpl_t threshold;
@@ -133,5 +191,170 @@
}
}
return 0;
+}
+
+void examples_common_init(int argc,char ** argv) {+
+
+ aubio_file_t * onsetfile = new_file_ro(onset_filename);
+ /* parse command line arguments */
+ parse_args(argc, argv);
+
+ if(!usejack)
+ {+ debug("Opening files ...\n");+ file = new_file_ro (input_filename);
+ if (verbose) file_info(file);
+ channels = aubio_file_channels(file);
+ samplerate = aubio_file_samplerate(file);
+ if (output_filename != NULL)
+ fileout = new_file_wo(file, output_filename);
+ }
+
+ ibuf = new_fvec(overlap_size, channels);
+ obuf = new_fvec(overlap_size, channels);
+ woodblock = new_fvec(buffer_size,1);
+ fftgrain = new_cvec(buffer_size, channels);
+
+ if (usepitch) {+ pitchdet = new_aubio_pitchdetection(buffer_size*4, overlap_size, channels, samplerate, mode, freq);
+
+ if (median) {+ note_buffer = new_fvec(median, 1);
+ note_buffer2= new_fvec(median, 1);
+ }
+ }
+ /* read the output sound once */
+ file_read(onsetfile, overlap_size, woodblock);
+ /* phase vocoder */
+ pv = new_aubio_pvoc(buffer_size, overlap_size, channels);
+ /* onsets */
+ parms = new_aubio_peakpicker(threshold);
+ o = new_aubio_onsetdetection(type_onset,buffer_size,channels);
+ onset = new_fvec(1, channels);
+ if (usedoubled) {+ o2 = new_aubio_onsetdetection(type_onset2,buffer_size,channels);
+ onset2 = new_fvec(1 , channels);
+ }
+
+}
+
+
+void examples_common_del(void){+ if (usepitch) {+ send_noteon(curnote,0);
+ del_aubio_pitchdetection(pitchdet);
+ if (median) {+ del_fvec(note_buffer);
+ del_fvec(note_buffer2);
+ }
+ }
+ del_aubio_pvoc(pv);
+ del_fvec(obuf);
+ del_fvec(ibuf);
+ del_cvec(fftgrain);
+ del_fvec(onset);
+}
+
+void examples_common_process(aubio_process_func_t process_func, aubio_print_func_t print ){+ if(usejack) {+#ifdef JACK_SUPPORT
+ aubio_jack_t * jack_setup;
+ debug("Jack init ...\n");+ jack_setup = new_aubio_jack(channels, channels,
+ (aubio_process_func_t)process_func);
+ if (usepitch) {+ debug("Midi init ...\n");+ mplay = new_aubio_midi_player();
+ mdriver = new_aubio_midi_driver("alsa_seq",+ (handle_midi_event_func_t)aubio_midi_send_event, mplay);
+ event = new_aubio_midi_event();
+ }
+ debug("Jack activation ...\n");+ aubio_jack_activate(jack_setup);
+ debug("Processing (Ctrl+C to quit) ...\n");+ pause();
+ aubio_jack_close(jack_setup);
+ if (usepitch) {+ send_noteon(curnote,0);
+ del_aubio_midi_driver(mdriver);
+ }
+#else
+ usage(stderr, 1);
+ outmsg("Compiled without jack output, exiting.\n");+#endif
+
+ } else {+ /* phasevoc */
+ debug("Processing ...\n");+
+ frames = 0;
+
+ while (overlap_size == file_read(file, overlap_size, ibuf))
+ {+ isonset=0;
+ process_func(ibuf->data, obuf->data, overlap_size);
+ print();
+ if (output_filename != NULL) {+ file_write(fileout,overlap_size,obuf);
+ }
+ frames++;
+ }
+
+ debug("Processed %d frames of %d samples.\n", frames, buffer_size);+ del_file(file);
+
+ if (output_filename != NULL)
+ del_file(fileout);
+
+ }
+}
+
+
+
+void send_noteon(int pitch, int velo)
+{+ smpl_t mpitch = (FLOOR)(freqtomidi(pitch)+.5);
+ /* we should check if we use midi here, not jack */
+#if ALSA_SUPPORT
+ if (usejack) {+ if (velo==0) {+ aubio_midi_event_set_type(event,NOTE_OFF);
+ } else {+ aubio_midi_event_set_type(event,NOTE_ON);
+ }
+ aubio_midi_event_set_channel(event,0);
+ aubio_midi_event_set_pitch(event,mpitch);
+ aubio_midi_event_set_velocity(event,velo);
+ aubio_midi_direct_output(mdriver,event);
+ } else
+#endif
+ if (!verbose)
+ {+ if (velo==0) {+ outmsg("%f\n",frames*overlap_size/(float)samplerate);+ } else {+ outmsg("%f\t%f\t", mpitch,+ frames*overlap_size/(float)samplerate);
+ }
+ }
+}
+
+
+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[0][i] = note_buffer->data[0][i+1];
+ }
+ note_buffer->data[0][note_buffer->length - 1] = curnote;
+ return;
+}
+
+uint_t get_note(fvec_t *note_buffer, fvec_t *note_buffer2){+ uint_t i = 0;
+ for (i = 0; i < note_buffer->length; i++) { + note_buffer2->data[0][i] = note_buffer->data[0][i];
+ }
+ return vec_median(note_buffer2);
}
--- a/examples/utils.h
+++ b/examples/utils.h
@@ -17,17 +17,96 @@
*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <getopt.h>
+#include <unistd.h>
+#include <math.h>
+#include <aubio.h>
+#include <aubioext.h>
+
#define debug(...) if (verbose) fprintf (stderr, __VA_ARGS__)
#define errmsg(...) fprintf (stderr, __VA_ARGS__)
#define outmsg(...) fprintf (stdout, __VA_ARGS__)
+extern int frames;
extern int verbose;
extern int usejack;
extern int usedoubled;
-extern int median;
+extern unsigned int median;
extern const char * output_filename;
extern const char * input_filename;
/* defined in utils.c */
void usage (FILE * stream, int exit_code);
int parse_args (int argc, char **argv);
+void examples_common_init(int argc, char **argv);
+void examples_common_del(void);
+typedef void (aubio_print_func_t)(void);
+void examples_common_process(aubio_process_func_t process_func, aubio_print_func_t print);
+
+
+void send_noteon(int pitch, int velo);
+/** append new note candidate to the note_buffer and return filtered value. we
+ * need to copy the input array as vec_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);
+
+extern const char * output_filename;
+extern const char * input_filename;
+extern const char * onset_filename;
+extern int verbose;
+extern int usejack;
+extern int usedoubled;
+
+
+/* energy,specdiff,hfc,complexdomain,phase */
+extern aubio_onsetdetection_type type_onset;
+extern aubio_onsetdetection_type type_onset2;
+extern smpl_t threshold;
+extern smpl_t threshold2;
+extern uint_t buffer_size;
+extern uint_t overlap_size;
+extern uint_t channels;
+extern uint_t samplerate;
+
+
+extern aubio_file_t * file;
+extern aubio_file_t * fileout;
+
+extern aubio_pvoc_t * pv;
+extern fvec_t * ibuf;
+extern fvec_t * obuf;
+extern cvec_t * fftgrain;
+extern fvec_t * woodblock;
+extern aubio_onsetdetection_t *o;
+extern aubio_onsetdetection_t *o2;
+extern fvec_t *onset;
+extern fvec_t *onset2;
+extern int isonset;
+extern aubio_pickpeak_t * parms;
+
+
+/* pitch objects */
+extern smpl_t pitch;
+extern aubio_pitchdetection_t * pitchdet;
+extern aubio_pitchdetection_type mode;
+extern uint_t median;
+
+extern fvec_t * note_buffer;
+extern fvec_t * note_buffer2;
+extern smpl_t curlevel;
+extern smpl_t maxonset;
+
+/* midi objects */
+extern aubio_midi_player_t * mplay;
+extern aubio_midi_driver_t * mdriver;
+extern aubio_midi_event_t * event;
+
+extern smpl_t curnote;
+extern smpl_t newnote;
+extern uint_t isready;
+
+/* per example param */
+extern uint_t usepitch;