%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); extern void cvec_write_norm(cvec_t *s, smpl_t data, uint_t channel, uint_t position); extern void cvec_write_phas(cvec_t *s, smpl_t data, uint_t channel, uint_t position); extern smpl_t cvec_read_norm(cvec_t *s, uint_t channel, uint_t position); extern smpl_t cvec_read_phas(cvec_t *s, uint_t channel, uint_t position); extern void cvec_put_norm_channel(cvec_t *s, smpl_t * data, uint_t channel); extern void cvec_put_phas_channel(cvec_t *s, smpl_t * data, uint_t channel); extern smpl_t * cvec_get_norm_channel(cvec_t *s, uint_t channel); extern smpl_t * cvec_get_phas_channel(cvec_t *s, uint_t channel); extern smpl_t ** cvec_get_norm(cvec_t *s); extern smpl_t ** cvec_get_phas(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); extern aubio_mfft_t * new_aubio_mfft(uint_t winsize, uint_t channels); extern void aubio_mfft_do (aubio_mfft_t * fft,fvec_t * in,cvec_t * fftgrain); extern void aubio_mfft_rdo(aubio_mfft_t * fft,cvec_t * fftgrain, fvec_t * out); extern void del_aubio_mfft(aubio_mfft_t * fft); /* 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); void aubio_autocorr(fvec_t * in, fvec_t * acf); /* 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_pitch_yinfft } 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); void aubio_pitchdetection_set_yinthresh(aubio_pitchdetection_t *p, smpl_t thres); 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 bufsize, uint_t hopsize, uint_t channels, uint_t samplerate); 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); smpl_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 hopsize, 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); */