ref: b47c62618291ff5d72ce7daada7e30b64fd5ee95
dir: /swig/aubio.i/
%module aubiowrapper
%{
#include "aubio.h"
#include "aubioext.h"
%}
#include "aubio.h"
#include "aubioext.h"
/* type aliases */
typedef unsigned int uint_t;
typedef int sint_t;
typedef float smpl_t;
/* fvec */
extern fvec_t * new_fvec(uint_t length, uint_t channels);
extern void del_fvec(fvec_t *s);
smpl_t fvec_read_sample(fvec_t *s, uint_t channel, uint_t position);
void fvec_write_sample(fvec_t *s, smpl_t data, uint_t channel, uint_t position);
smpl_t * fvec_get_channel(fvec_t *s, uint_t channel);
void fvec_put_channel(fvec_t *s, smpl_t * data, uint_t channel);
smpl_t ** fvec_get_data(fvec_t *s);
/* another way, passing -c++ option to swig */
/*
class fvec_t{
public:
%extend {
fvec_t(uint_t length, uint_t channels){
return new_fvec(length, channels);
}
~fvec_t() {
del_fvec(self);
}
smpl_t get( uint_t channel, uint_t position) {
return fvec_read_sample(self,channel,position);
}
void set( smpl_t data, uint_t channel, uint_t position) {
fvec_write_sample(self, data, channel, position);
}
#smpl_t * fvec_get_channel(fvec_t *s, uint_t channel);
#void fvec_put_channel(fvec_t *s, smpl_t * data, uint_t channel);
}
};
*/
/* cvec */
extern cvec_t * new_cvec(uint_t length, uint_t channels);
extern void del_cvec(cvec_t *s);
/* sndfile */
extern aubio_sndfile_t * new_aubio_sndfile_ro (const char * inputfile);
extern aubio_sndfile_t * new_aubio_sndfile_wo(aubio_sndfile_t * existingfile, const char * outputname);
extern void aubio_sndfile_info(aubio_sndfile_t * file);
extern int aubio_sndfile_write(aubio_sndfile_t * file, int frames, fvec_t * write);
extern int aubio_sndfile_read(aubio_sndfile_t * file, int frames, fvec_t * read);
extern int del_aubio_sndfile(aubio_sndfile_t * file);
extern uint_t aubio_sndfile_channels(aubio_sndfile_t * file);
extern uint_t aubio_sndfile_samplerate(aubio_sndfile_t * file);
/* fft */
extern void aubio_fft_getnorm(smpl_t * norm, fft_data_t * spectrum, uint_t size);
extern void aubio_fft_getphas(smpl_t * phase, fft_data_t * spectrum, uint_t size);
/* filter */
extern aubio_filter_t * new_aubio_filter(uint_t samplerate, uint_t order);
extern aubio_filter_t * new_aubio_adsgn_filter(uint_t samplerate);
extern aubio_filter_t * new_aubio_cdsgn_filter(uint_t samplerate);
extern void aubio_filter_do(aubio_filter_t * b, fvec_t * in);
extern void aubio_filter_do_outplace(aubio_filter_t * b, fvec_t * in, fvec_t * out);
extern void aubio_filter_do_filtfilt(aubio_filter_t * b, fvec_t * in, fvec_t * tmp);
/*extern int del_aubio_filter(aubio_filter_t * b);*/
/* biquad */
extern aubio_biquad_t * new_aubio_biquad(lsmp_t b1, lsmp_t b2, lsmp_t b3, lsmp_t a2, lsmp_t a3);
extern void aubio_biquad_do(aubio_biquad_t * b, fvec_t * in);
extern void aubio_biquad_do_filtfilt(aubio_biquad_t * b, fvec_t * in, fvec_t * tmp);
/*extern int del_aubio_biquad(aubio_biquad_t * b);*/
/* hist */
extern aubio_hist_t * new_aubio_hist(smpl_t flow, smpl_t fhig, uint_t nelems, uint_t channels);
extern void del_aubio_hist(aubio_hist_t *s);
extern void aubio_hist_do(aubio_hist_t *s, fvec_t * input);
extern void aubio_hist_do_notnull(aubio_hist_t *s, fvec_t * input);
extern void aubio_hist_dyn_notnull (aubio_hist_t *s, fvec_t *input);
/* mathutils */
typedef enum {
aubio_win_rectangle,
aubio_win_hamming,
aubio_win_hanning,
aubio_win_hanningz,
aubio_win_blackman,
aubio_win_blackman_harris,
aubio_win_gaussian,
aubio_win_welch,
aubio_win_parzen
} aubio_window_type;
void aubio_window(smpl_t *w, uint_t size, aubio_window_type wintype);
smpl_t aubio_unwrap2pi (smpl_t phase);
smpl_t vec_mean(fvec_t *s);
smpl_t vec_max(fvec_t *s);
smpl_t vec_min(fvec_t *s);
uint_t vec_min_elem(fvec_t *s);
uint_t vec_max_elem(fvec_t *s);
void vec_shift(fvec_t *s);
smpl_t vec_sum(fvec_t *s);
smpl_t vec_local_energy(fvec_t * f);
smpl_t vec_local_hfc(fvec_t * f);
smpl_t vec_alpha_norm(fvec_t * DF, smpl_t alpha);
void vec_dc_removal(fvec_t * mag);
void vec_alpha_normalise(fvec_t * mag, uint_t alpha);
void vec_add(fvec_t * mag, smpl_t threshold);
void vec_adapt_thres(fvec_t * vec, fvec_t * tmp, uint_t post, uint_t pre);
smpl_t vec_moving_thres(fvec_t * vec, fvec_t * tmp, uint_t post, uint_t pre, uint_t pos);
smpl_t vec_median(fvec_t * input);
smpl_t vec_quadint(fvec_t * x,uint_t pos);
smpl_t aubio_quadfrac(smpl_t s0, smpl_t s1, smpl_t s2, smpl_t pf);
uint_t vec_peakpick(fvec_t * input, uint_t pos);
smpl_t aubio_bintomidi(smpl_t bin, smpl_t samplerate, smpl_t fftsize);
smpl_t aubio_miditobin(smpl_t midi, smpl_t samplerate, smpl_t fftsize);
smpl_t aubio_bintofreq(smpl_t bin, smpl_t samplerate, smpl_t fftsize);
smpl_t aubio_freqtobin(smpl_t freq, smpl_t samplerate, smpl_t fftsize);
smpl_t aubio_freqtomidi(smpl_t freq);
smpl_t aubio_miditofreq(smpl_t midi);
uint_t aubio_silence_detection(fvec_t * ibuf, smpl_t threshold);
smpl_t aubio_level_detection(fvec_t * ibuf, smpl_t threshold);
/* scale */
extern aubio_scale_t * new_aubio_scale(smpl_t flow, smpl_t fhig, smpl_t ilow, smpl_t ihig );
extern void aubio_scale_set (aubio_scale_t *s, smpl_t ilow, smpl_t ihig, smpl_t olow, smpl_t ohig);
extern void aubio_scale_do(aubio_scale_t *s, fvec_t * input);
extern void del_aubio_scale(aubio_scale_t *s);
/* resampling */
extern aubio_resampler_t * new_aubio_resampler(float ratio, uint_t type);
extern uint_t aubio_resampler_process(aubio_resampler_t *s, fvec_t * input, fvec_t * output);
extern void del_aubio_resampler(aubio_resampler_t *s);
/* onset detection */
typedef enum {
aubio_onset_energy,
aubio_onset_specdiff,
aubio_onset_hfc,
aubio_onset_complex,
aubio_onset_phase,
aubio_onset_kl,
aubio_onset_mkl
} aubio_onsetdetection_type;
aubio_onsetdetection_t * new_aubio_onsetdetection(aubio_onsetdetection_type type, uint_t size, uint_t channels);
void aubio_onsetdetection(aubio_onsetdetection_t *o, cvec_t * fftgrain, fvec_t * onset);
void aubio_onsetdetection_free(aubio_onsetdetection_t *o);
/* should these still be exposed ? */
void aubio_onsetdetection_energy (aubio_onsetdetection_t *o, cvec_t * fftgrain, fvec_t * onset);
void aubio_onsetdetection_hfc (aubio_onsetdetection_t *o, cvec_t * fftgrain, fvec_t * onset);
void aubio_onsetdetection_complex (aubio_onsetdetection_t *o, cvec_t * fftgrain, fvec_t * onset);
void aubio_onsetdetection_phase (aubio_onsetdetection_t *o, cvec_t * fftgrain, fvec_t * onset);
void aubio_onsetdetection_specdiff(aubio_onsetdetection_t *o, cvec_t * fftgrain, fvec_t * onset);
void aubio_onsetdetection_kl (aubio_onsetdetection_t *o, cvec_t * fftgrain, fvec_t * onset);
void aubio_onsetdetection_mkl (aubio_onsetdetection_t *o, cvec_t * fftgrain, fvec_t * onset);
/* pvoc */
aubio_pvoc_t * new_aubio_pvoc (uint_t win_s, uint_t hop_s, uint_t channels);
void del_aubio_pvoc(aubio_pvoc_t *pv);
void aubio_pvoc_do(aubio_pvoc_t *pv, fvec_t *in, cvec_t * fftgrain);
void aubio_pvoc_rdo(aubio_pvoc_t *pv, cvec_t * fftgrain, fvec_t *out);
/* pitch detection */
typedef enum {
aubio_pitch_yin,
aubio_pitch_mcomb,
aubio_pitch_schmitt,
aubio_pitch_fcomb
} aubio_pitchdetection_type;
typedef enum {
aubio_pitchm_freq,
aubio_pitchm_midi,
aubio_pitchm_cent,
aubio_pitchm_bin
} aubio_pitchdetection_mode;
smpl_t aubio_pitchdetection(aubio_pitchdetection_t * p, fvec_t * ibuf);
smpl_t aubio_pitchdetection_mcomb(aubio_pitchdetection_t *p, fvec_t * ibuf);
smpl_t aubio_pitchdetection_yin(aubio_pitchdetection_t *p, fvec_t *ibuf);
void del_aubio_pitchdetection(aubio_pitchdetection_t * p);
aubio_pitchdetection_t * new_aubio_pitchdetection(uint_t bufsize,
uint_t hopsize,
uint_t channels,
uint_t samplerate,
aubio_pitchdetection_type type,
aubio_pitchdetection_mode mode);
/* pitch mcomb */
aubio_pitchmcomb_t * new_aubio_pitchmcomb(uint_t size, uint_t channels);
smpl_t aubio_pitchmcomb_detect(aubio_pitchmcomb_t * p, cvec_t * fftgrain);
uint_t aubio_pitch_cands(aubio_pitchmcomb_t * p, cvec_t * fftgrain, smpl_t * cands);
void del_aubio_pitchmcomb (aubio_pitchmcomb_t *p);
/* pitch yin */
void aubio_pitchyin_diff(fvec_t *input, fvec_t *yin);
void aubio_pitchyin_getcum(fvec_t *yin);
uint_t aubio_pitchyin_getpitch(fvec_t *yin);
uint_t aubio_pitchyin_getpitchfast(fvec_t * input, fvec_t *yin, smpl_t tol);
/* pitch schmitt */
aubio_pitchschmitt_t * new_aubio_pitchschmitt (uint_t size, uint_t samplerate);
smpl_t aubio_pitchschmitt_detect (aubio_pitchschmitt_t *p, fvec_t * input);
void del_aubio_pitchschmitt (aubio_pitchschmitt_t *p);
/* pitch fcomb */
aubio_pitchfcomb_t * new_aubio_pitchfcomb (uint_t size, uint_t samplerate);
smpl_t aubio_pitchfcomb_detect (aubio_pitchfcomb_t *p, fvec_t * input);
void del_aubio_pitchfcomb (aubio_pitchfcomb_t *p);
/* peakpicker */
aubio_pickpeak_t * new_aubio_peakpicker(smpl_t threshold);
uint_t aubio_peakpick_pimrt(fvec_t * DF, aubio_pickpeak_t * p);
smpl_t aubio_peakpick_pimrt_getval(aubio_pickpeak_t* p);
uint_t aubio_peakpick_pimrt_wt( fvec_t* DF, aubio_pickpeak_t* p, smpl_t* peakval );
void del_aubio_peakpicker(aubio_pickpeak_t * p);
/* transient/steady state separation */
aubio_tss_t * new_aubio_tss(smpl_t thrs, smpl_t alfa, smpl_t beta,
uint_t size, uint_t overlap,uint_t channels);
void del_aubio_tss(aubio_tss_t *s);
void aubio_tss_do(aubio_tss_t *s, cvec_t * input, cvec_t * trans, cvec_t * stead);
/* beattracking */
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);
/* jack */
#ifdef JACK_SUPPORT
extern aubio_jack_t * new_aubio_jack (uint_t inchannels, uint_t outchannels, aubio_process_func_t callback);
typedef int (*aubio_process_func_t)(smpl_t **input, smpl_t **output, int nframes);
extern uint_t aubio_jack_activate(aubio_jack_t *jack_setup);
extern void aubio_jack_close(aubio_jack_t *jack_setup);
#endif
/* midi */
enum aubio_midi_event_type {
/* channel messages */
NOTE_OFF = 0x80,
NOTE_ON = 0x90,
KEY_PRESSURE = 0xa0,
CONTROL_CHANGE = 0xb0,
PROGRAM_CHANGE = 0xc0,
CHANNEL_PRESSURE = 0xd0,
PITCH_BEND = 0xe0,
/* system exclusive */
MIDI_SYSEX = 0xf0,
/* system common - never in midi files */
MIDI_TIME_CODE = 0xf1,
MIDI_SONG_POSITION = 0xf2,
MIDI_SONG_SELECT = 0xf3,
MIDI_TUNE_REQUEST = 0xf6,
MIDI_EOX = 0xf7,
/* system real-time - never in midi files */
MIDI_SYNC = 0xf8,
MIDI_TICK = 0xf9,
MIDI_START = 0xfa,
MIDI_CONTINUE = 0xfb,
MIDI_STOP = 0xfc,
MIDI_ACTIVE_SENSING = 0xfe,
MIDI_SYSTEM_RESET = 0xff,
/* meta event - for midi files only */
MIDI_META_EVENT = 0xff
};
enum aubio_midi_control_change {
BANK_SELECT_MSB = 0x00,
MODULATION_MSB = 0x01,
BREATH_MSB = 0x02,
FOOT_MSB = 0x04,
PORTAMENTO_TIME_MSB = 0x05,
DATA_ENTRY_MSB = 0x06,
VOLUME_MSB = 0x07,
BALANCE_MSB = 0x08,
PAN_MSB = 0x0A,
EXPRESSION_MSB = 0x0B,
EFFECTS1_MSB = 0x0C,
EFFECTS2_MSB = 0x0D,
GPC1_MSB = 0x10, /* general purpose controller */
GPC2_MSB = 0x11,
GPC3_MSB = 0x12,
GPC4_MSB = 0x13,
BANK_SELECT_LSB = 0x20,
MODULATION_WHEEL_LSB = 0x21,
BREATH_LSB = 0x22,
FOOT_LSB = 0x24,
PORTAMENTO_TIME_LSB = 0x25,
DATA_ENTRY_LSB = 0x26,
VOLUME_LSB = 0x27,
BALANCE_LSB = 0x28,
PAN_LSB = 0x2A,
EXPRESSION_LSB = 0x2B,
EFFECTS1_LSB = 0x2C,
EFFECTS2_LSB = 0x2D,
GPC1_LSB = 0x30,
GPC2_LSB = 0x31,
GPC3_LSB = 0x32,
GPC4_LSB = 0x33,
SUSTAIN_SWITCH = 0x40,
PORTAMENTO_SWITCH = 0x41,
SOSTENUTO_SWITCH = 0x42,
SOFT_PEDAL_SWITCH = 0x43,
LEGATO_SWITCH = 0x45,
HOLD2_SWITCH = 0x45,
SOUND_CTRL1 = 0x46,
SOUND_CTRL2 = 0x47,
SOUND_CTRL3 = 0x48,
SOUND_CTRL4 = 0x49,
SOUND_CTRL5 = 0x4A,
SOUND_CTRL6 = 0x4B,
SOUND_CTRL7 = 0x4C,
SOUND_CTRL8 = 0x4D,
SOUND_CTRL9 = 0x4E,
SOUND_CTRL10 = 0x4F,
GPC5 = 0x50,
GPC6 = 0x51,
GPC7 = 0x52,
GPC8 = 0x53,
PORTAMENTO_CTRL = 0x54,
EFFECTS_DEPTH1 = 0x5B,
EFFECTS_DEPTH2 = 0x5C,
EFFECTS_DEPTH3 = 0x5D,
EFFECTS_DEPTH4 = 0x5E,
EFFECTS_DEPTH5 = 0x5F,
DATA_ENTRY_INCR = 0x60,
DATA_ENTRY_DECR = 0x61,
NRPN_LSB = 0x62,
NRPN_MSB = 0x63,
RPN_LSB = 0x64,
RPN_MSB = 0x65,
ALL_SOUND_OFF = 0x78,
ALL_CTRL_OFF = 0x79,
LOCAL_CONTROL = 0x7A,
ALL_NOTES_OFF = 0x7B,
OMNI_OFF = 0x7C,
OMNI_ON = 0x7D,
POLY_OFF = 0x7E,
POLY_ON = 0x7F
};
enum midi_meta_event {
MIDI_COPYRIGHT = 0x02,
MIDI_TRACK_NAME = 0x03,
MIDI_INST_NAME = 0x04,
MIDI_LYRIC = 0x05,
MIDI_MARKER = 0x06,
MIDI_CUE_POINT = 0x07,
MIDI_EOT = 0x2f,
MIDI_SET_TEMPO = 0x51,
MIDI_SMPTE_OFFSET = 0x54,
MIDI_TIME_SIGNATURE = 0x58,
MIDI_KEY_SIGNATURE = 0x59,
MIDI_SEQUENCER_EVENT = 0x7f
};
enum aubio_player_status
{
AUBIO_MIDI_PLAYER_READY,
AUBIO_MIDI_PLAYER_PLAYING,
AUBIO_MIDI_PLAYER_DONE
};
enum aubio_driver_status
{
AUBIO_MIDI_READY,
AUBIO_MIDI_LISTENING,
AUBIO_MIDI_DONE
};
/* midi event */
aubio_midi_event_t* new_aubio_midi_event(void);
int del_aubio_midi_event(aubio_midi_event_t* event);
int aubio_midi_event_set_type(aubio_midi_event_t* evt, int type);
int aubio_midi_event_get_type(aubio_midi_event_t* evt);
int aubio_midi_event_set_channel(aubio_midi_event_t* evt, int chan);
int aubio_midi_event_get_channel(aubio_midi_event_t* evt);
int aubio_midi_event_get_key(aubio_midi_event_t* evt);
int aubio_midi_event_set_key(aubio_midi_event_t* evt, int key);
int aubio_midi_event_get_velocity(aubio_midi_event_t* evt);
int aubio_midi_event_set_velocity(aubio_midi_event_t* evt, int vel);
int aubio_midi_event_get_control(aubio_midi_event_t* evt);
int aubio_midi_event_set_control(aubio_midi_event_t* evt, int ctrl);
int aubio_midi_event_get_value(aubio_midi_event_t* evt);
int aubio_midi_event_set_value(aubio_midi_event_t* evt, int val);
int aubio_midi_event_get_program(aubio_midi_event_t* evt);
int aubio_midi_event_set_program(aubio_midi_event_t* evt, int val);
int aubio_midi_event_get_pitch(aubio_midi_event_t* evt);
int aubio_midi_event_set_pitch(aubio_midi_event_t* evt, int val);
int aubio_midi_event_length(unsigned char status);
/* midi track */
aubio_track_t* new_aubio_track(int num);
int del_aubio_track(aubio_track_t* track);
int aubio_track_set_name(aubio_track_t* track, char* name);
char* aubio_track_get_name(aubio_track_t* track);
int aubio_track_add_event(aubio_track_t* track, aubio_midi_event_t* evt);
aubio_midi_event_t* aubio_track_first_event(aubio_track_t* track);
aubio_midi_event_t* aubio_track_next_event(aubio_track_t* track);
int aubio_track_get_duration(aubio_track_t* track);
int aubio_track_reset(aubio_track_t* track);
int aubio_track_count_events(aubio_track_t* track, int* on, int* off);
/* midi player */
aubio_midi_player_t* new_aubio_midi_player(void);
sint_t del_aubio_midi_player(aubio_midi_player_t* player);
sint_t aubio_midi_player_reset(aubio_midi_player_t* player);
sint_t aubio_midi_player_add_track(aubio_midi_player_t* player, aubio_track_t* track);
sint_t aubio_midi_player_count_tracks(aubio_midi_player_t* player);
aubio_track_t* aubio_midi_player_get_track(aubio_midi_player_t* player, sint_t i);
sint_t aubio_midi_player_add(aubio_midi_player_t* player, char* midifile);
sint_t aubio_midi_player_load(aubio_midi_player_t* player, char *filename);
sint_t aubio_midi_player_callback(void* data, uint_t msec);
sint_t aubio_midi_player_play(aubio_midi_player_t* player);
sint_t aubio_midi_player_play_offline(aubio_midi_player_t* player);
sint_t aubio_midi_player_stop(aubio_midi_player_t* player);
sint_t aubio_midi_player_set_loop(aubio_midi_player_t* player, sint_t loop);
sint_t aubio_midi_player_set_midi_tempo(aubio_midi_player_t* player, sint_t tempo);
sint_t aubio_midi_player_set_bpm(aubio_midi_player_t* player, sint_t bpm);
sint_t aubio_midi_player_join(aubio_midi_player_t* player);
sint_t aubio_track_send_events(aubio_track_t* track,
/* aubio_synth_t* synth, */
aubio_midi_player_t* player,
uint_t ticks);
sint_t aubio_midi_send_event(aubio_midi_player_t* player, aubio_midi_event_t* event);
/* midi parser */
aubio_midi_parser_t* new_aubio_midi_parser(void);
int del_aubio_midi_parser(aubio_midi_parser_t* parser);
aubio_midi_event_t* aubio_midi_parser_parse(aubio_midi_parser_t* parser, unsigned char c);
/* midi file */
aubio_midi_file_t* new_aubio_midi_file(char* filename);
void del_aubio_midi_file(aubio_midi_file_t* mf);
int aubio_midi_file_read_mthd(aubio_midi_file_t* midifile);
int aubio_midi_file_load_tracks(aubio_midi_file_t* midifile, aubio_midi_player_t* player);
int aubio_midi_file_read_track(aubio_midi_file_t* mf, aubio_midi_player_t* player, int num);
int aubio_midi_file_read_event(aubio_midi_file_t* mf, aubio_track_t* track);
int aubio_midi_file_read_varlen(aubio_midi_file_t* mf);
int aubio_midi_file_getc(aubio_midi_file_t* mf);
int aubio_midi_file_push(aubio_midi_file_t* mf, int c);
int aubio_midi_file_read(aubio_midi_file_t* mf, void* buf, int len);
int aubio_midi_file_skip(aubio_midi_file_t* mf, int len);
int aubio_midi_file_read_tracklen(aubio_midi_file_t* mf);
int aubio_midi_file_eot(aubio_midi_file_t* mf);
int aubio_midi_file_get_division(aubio_midi_file_t* midifile);
/* midi driver */
aubio_midi_driver_t* new_aubio_midi_driver(char * name,
handle_midi_event_func_t handler, void* event_handler_data);
typedef int* (handle_midi_event_func_t) (void* data, aubio_midi_event_t* event);
void del_aubio_midi_driver(aubio_midi_driver_t* driver);
void aubio_midi_driver_settings(aubio_settings_t* settings);
/* timer */
/*
extern aubio_timer_t* new_aubio_timer(int msec, int * callback,
void* data, int new_thread, int auto_destroy);
extern int aubio_timer_join(aubio_timer_t* timer);
extern int aubio_timer_stop(aubio_timer_t* timer);
extern int delete_aubio_timer(aubio_timer_t* timer);
extern void * aubio_timer_start(void * data);
extern void aubio_time_config(void);
*/
/* list */
/*
extern struct aubio_list_t* new_aubio_list(void);
extern void del_aubio_list(struct aubio_list_t *list);
extern void del_aubio_list1(struct aubio_list_t *list);
#extern struct aubio_list_t* aubio_list_sort(struct aubio_list_t *list, aubio_compare_func_t compare_func);
extern struct aubio_list_t* aubio_list_append(struct aubio_list_t *list, void* data);
extern struct aubio_list_t* aubio_list_prepend(struct aubio_list_t *list, void* data);
extern struct aubio_list_t* aubio_list_remove(struct aubio_list_t *list, void* data);
extern struct aubio_list_t* aubio_list_remove_link(struct aubio_list_t *list, struct aubio_list_t *llink);
extern struct aubio_list_t* aubio_list_nth(struct aubio_list_t *list, int n);
extern struct aubio_list_t* aubio_list_last(struct aubio_list_t *list);
extern struct aubio_list_t* aubio_list_insert_at(struct aubio_list_t *list, int n, void* data);
*/