source: python/aubio/aubioclass.py @ cea30b8

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since cea30b8 was cea30b8, checked in by Paul Brossier <piem@piem.org>, 13 years ago

aubioclass.py: make sndfile raise error if file not opened, do not delete it if == None, avoiding several segfaults

  • Property mode set to 100644
File size: 5.5 KB
Line 
1from aubiowrapper import *
2
3class fvec:
4    def __init__(self,size,chan):
5        self.vec = new_fvec(size,chan)
6    def __call__(self):
7        return self.vec
8    def __del__(self):
9        del_fvec(self())
10    def get(self,pos,chan):
11        return fvec_read_sample(self(),chan,pos)
12    def set(self,value,pos,chan):
13        return fvec_write_sample(self(),value,chan,pos)
14    def channel(self,chan):
15        return fvec_get_channel(self(),chan)
16    def data(self):
17        return fvec_get_data(self())
18
19class cvec:
20    def __init__(self,size,chan):
21        self.vec = new_cvec(size,chan)
22    def __call__(self):
23        return self.vec
24    def __del__(self):
25        del_cvec(self())
26    def get(self,pos,chan):
27        return self.get_norm(pos,chan)
28    def set(self,val,pos,chan):
29        self.set_norm(val,chan,pos)
30    def get_norm(self,pos,chan):
31        return cvec_read_norm(self(),chan,pos)
32    def set_norm(self,val,pos,chan):
33        cvec_write_norm(self(),val,chan,pos)
34    def get_phas(self,pos,chan):
35        return cvec_read_phas(self(),chan,pos)
36    def set_phas(self,val,pos,chan):
37        cvec_write_phas(self(),val,chan,pos)
38
39class sndfile:
40    def __init__(self,filename,model=None):
41        if (model!=None):
42            self.file = new_aubio_sndfile_wo(model.file,filename)
43        else:
44            self.file = new_aubio_sndfile_ro(filename)
45        if self.file == None: raise(ValueError, "failed opening file")
46    def __del__(self):
47        if self.file != None: del_aubio_sndfile(self.file)
48    def info(self):
49        aubio_sndfile_info(self.file)
50    def samplerate(self):
51        return aubio_sndfile_samplerate(self.file)
52    def channels(self):
53        return aubio_sndfile_channels(self.file)
54    def read(self,nfram,vecread):
55        return aubio_sndfile_read(self.file,nfram,vecread())
56    def write(self,nfram,vecwrite):
57        return aubio_sndfile_write(self.file,nfram,vecwrite())
58
59class pvoc:
60    def __init__(self,buf,hop,chan):
61        self.pv = new_aubio_pvoc(buf,hop,chan)
62    def __del__(self):
63        del_aubio_pvoc(self.pv)
64    def do(self,tf,tc):
65        aubio_pvoc_do(self.pv,tf(),tc())
66    def rdo(self,tc,tf):
67        aubio_pvoc_rdo(self.pv,tc(),tf())
68
69class onsetdetection:
70    """ class for aubio_onsetdetection """
71    def __init__(self,type,buf,chan):
72        self.od = new_aubio_onsetdetection(type,buf,chan)
73    def do(self,tc,tf):
74        aubio_onsetdetection(self.od,tc(),tf())
75    def __del__(self):
76        aubio_onsetdetection_free(self.od)
77
78class peakpick:
79    """ class for aubio_peakpicker """
80    def __init__(self,threshold=0.1):
81        self.pp = new_aubio_peakpicker(threshold)
82    def do(self,fv):
83        return aubio_peakpick_pimrt(fv(),self.pp)
84    def getval(self):
85        return aubio_peakpick_pimrt_getval(self.pp)
86    def __del__(self):
87        del_aubio_peakpicker(self.pp)
88
89class onsetpick:
90    """ superclass for aubio_pvoc + aubio_onsetdetection + aubio_peakpicker """
91    def __init__(self,bufsize,hopsize,channels,myvec,threshold,mode='dual',derivate=False,dcthreshold=0):
92        self.myfft    = cvec(bufsize,channels)
93        self.pv       = pvoc(bufsize,hopsize,channels)
94        if mode in ['dual'] :
95                self.myod     = onsetdetection(aubio_onset_hfc,bufsize,channels)
96                self.myod2    = onsetdetection(aubio_onset_mkl,bufsize,channels)
97                self.myonset  = fvec(1,channels)
98                self.myonset2 = fvec(1,channels)
99        else: 
100                self.myod     = onsetdetection(mode,bufsize,channels)
101                self.myonset  = fvec(1,channels)
102        self.mode     = mode
103        self.pp       = peakpick(float(threshold))
104        self.derivate = derivate
105        self.dcthreshold = dcthreshold
106        self.oldval   = 0.
107
108    def do(self,myvec): 
109        self.pv.do(myvec,self.myfft)
110        self.myod.do(self.myfft,self.myonset)
111        if self.mode == 'dual':
112           self.myod2.do(self.myfft,self.myonset2)
113           self.myonset.set(self.myonset.get(0,0)*self.myonset2.get(0,0),0,0)
114        if self.derivate:
115           val         = self.myonset.get(0,0)
116           dval        = val - self.oldval
117           self.oldval = val
118           if dval > 0: self.myonset.set(dval,0,0)
119           else:  self.myonset.set(0.,0,0)
120        isonset, dval = self.pp.do(self.myonset),self.myonset.get(0,0)
121        if self.dcthreshold:
122           if dval < self.dcthreshold: isonset = 0 
123        return isonset, dval
124
125class pitchdetection:
126    def __init__(self,mode=aubio_pitch_mcomb,bufsize=2048,hopsize=1024,
127        channels=1,samplerate=44100.,omode=aubio_pitchm_freq,yinthresh=0.1):
128        self.pitchp = new_aubio_pitchdetection(bufsize,hopsize,channels,
129                samplerate,mode,omode)
130        aubio_pitchdetection_set_yinthresh(self.pitchp,yinthresh)
131        #self.filt     = filter(srate,"adsgn")
132    def __del__(self):
133        del_aubio_pitchdetection(self.pitchp)
134    def __call__(self,myvec): 
135        #self.filt(myvec)
136        return aubio_pitchdetection(self.pitchp,myvec())
137
138class filter:
139    def __init__(self,srate,type=None):
140        if (type=="adsgn"):
141            self.filter = new_aubio_adsgn_filter(srate)
142    def __del__(self):
143        #del_aubio_filter(self.filter)
144        pass
145    def __call__(self,myvec):
146        aubio_filter_do(self.filter,myvec())
147
148class beattracking:
149    """ class for aubio_beattracking """
150    def __init__(self,winlen,channels):
151        self.p = new_aubio_beattracking(winlen,channels)
152    def do(self,dfframe,out):
153        return aubio_beattracking_do(self.p,dfframe(),out())
154    def __del__(self):
155        del_aubio_beattracking(self.p)
156
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