Changeset 7c9ad74 for python

Timestamp:

Dec 19, 2005, 10:24:51 PM (19 years ago)

Author:

Paul Brossier <piem@altern.org>

Branches:

feature/autosink, feature/cnn, feature/cnn_org, feature/constantq, feature/crepe, feature/crepe_org, feature/pitchshift, feature/pydocstrings, feature/timestretch, fix/ffmpeg5, master, pitchshift, sampler, timestretch, yinfft+

Children:

4f4a8a4

Parents:

50e99cc

Message:

added tasks fot onset, silence and cut
added tasks fot onset, silence and cut

File:

• python/aubio/tasks.py (modified) (7 diffs)

python/aubio/tasks.py

@@ -202 +202 @@
                 self.derivate = False
                 self.localmin = False
+                self.storefunc = False
                 self.bufsize = 512
                 self.hopsize = 256
@@ -208 +209 @@
                 self.step = float(self.hopsize)/float(self.samplerate)
                 self.threshold = 0.1
-                self.mode = 'yin'
+                self.onsetmode = 'dual'
+                self.pitchmode = 'yin'
                 self.omode = aubio_pitchm_freq
 
 class task(taskparams):
+        """ default template class to apply tasks on a stream """
         def __init__(self,input,output=None,params=None):
-                """ open the input file and initialize default argument """
+                """ open the input file and initialize default argument 
+                parameters should be set *before* calling this method.
+                """
                 if params == None: self.params = taskparams()
                 else: self.params = params
+                self.frameread = 0
+                self.readsize  = self.params.hopsize
                 self.input     = input
                 self.filei     = sndfile(self.input)
                 self.srate     = self.filei.samplerate()
                 self.channels  = self.filei.channels()
+                self.step      = float(self.srate)/float(self.params.hopsize)
+                self.myvec     = fvec(self.params.hopsize,self.channels)
                 self.output    = output
-        def compute_step(self):
-                pass
+        def __call__(self):
+                self.readsize = self.filei.read(self.params.hopsize,self.myvec)
+                self.frameread += 1
+                
         def compute_all(self):
                 """ Compute data """
                 mylist    = []
                 while(self.readsize==self.params.hopsize):
-                        mylist.append(self())
+                        tmp = self()
+                        if tmp: mylist.append(tmp)
                 return mylist
 
@@ -238 +250 @@
                 pass
 
+class tasksilence(task):
+        wassilence = 1
+        issilence  = 1
+        def __call__(self):
+                task.__call__(self)
+                if (aubio_silence_detection(self.myvec(),self.params.silence)==1):
+                        if self.wassilence == 1: self.issilence = 1
+                        else: self.issilence = 2
+                        self.wassilence = 1
+                else: 
+                        if self.wassilence <= 0: self.issilence = 0
+                        else: self.issilence = -1 
+                        self.wassilence = 0
+                if self.issilence == -1:
+                        return -1, self.frameread 
+                elif self.issilence == 2:
+                        return 2, self.frameread 
+
 class taskpitch(task):
-        #def __init__(self,input,output): 
-        #       pass
-        #       task.__init__(self,input)
-        #       #taskparams.__init__(self)
         def __init__(self,input,params=None):
                 task.__init__(self,input,params=params)
-                self.myvec     = fvec(self.params.hopsize,self.channels)
-                self.frameread = 0
-                self.readsize  = self.params.hopsize
-                self.pitchdet  = pitchdetection(mode=get_pitch_mode(self.params.mode),
+                self.pitchdet  = pitchdetection(mode=get_pitch_mode(self.params.pitchmode),
                         bufsize=self.params.bufsize,
                         hopsize=self.params.hopsize,
@@ -256 +279 @@
 
         def __call__(self):
-                self.readsize = self.filei.read(self.params.hopsize,self.myvec)
+                #print "%.3f     %.2f" % (now,freq)
+                task.__call__(self)
                 freq = self.pitchdet(self.myvec)
-                #print "%.3f     %.2f" % (now,freq)
-                self.frameread += 1
                 if (aubio_silence_detection(self.myvec(),self.params.silence)!=1):
                         return freq
@@ -266 +288 @@
 
         def gettruth(self):
+                """ big hack to extract midi note from /path/to/file.<midinote>.wav """
                 return float(self.input.split('.')[-2])
                 
@@ -281 +304 @@
                                 sum += i
                                 num += 1
-                avg = aubio_freqtomidi(sum / float(num))
+                if num == 0: 
+                        avg = 0; med = 0
+                else:
+                        avg = aubio_freqtomidi(sum / float(num))
+                        med = aubio_freqtomidi(short_find(res,len(res)/2))
                 avgdist = self.truth - avg
-                med = aubio_freqtomidi(short_find(res,len(res)/2))
                 meddist = self.truth - med
                 return avgdist, meddist
@@ -296 +322 @@
 
 
-
+class taskonset(task):
+        def __init__(self,input,output=None,params=None):
+                """ open the input file and initialize arguments 
+                parameters should be set *before* calling this method.
+                """
+                task.__init__(self,input,params=params)
+                self.opick = onsetpick(self.params.bufsize,
+                        self.params.hopsize,
+                        self.channels,
+                        self.myvec,
+                        self.params.threshold,
+                        mode=get_onset_mode(self.params.onsetmode),
+                        derivate=self.params.derivate)
+                self.olist = [] 
+                self.ofunc = []
+                self.d,self.d2 = [],[]
+                self.maxofunc = 0
+                if self.params.localmin:
+                        ovalist   = [0., 0., 0., 0., 0.]
+
+        def __call__(self):
+                task.__call__(self)
+                isonset,val = self.opick.do(self.myvec)
+                if (aubio_silence_detection(self.myvec(),self.params.silence)):
+                        isonset=0
+                if self.params.storefunc:
+                        self.ofunc.append(val)
+                if self.params.localmin:
+                        if val > 0: ovalist.append(val)
+                        else: ovalist.append(0)
+                        ovalist.pop(0)
+                if (isonset == 1):
+                        if self.params.localmin:
+                                i=len(self.ovalist)-1
+                                # find local minima before peak 
+                                while self.ovalist[i-1] < self.ovalist[i] and i > 0:
+                                        i -= 1
+                                now = (self.frameread+1-i)
+                        else:
+                                now = self.frameread
+                        if now < 0 :
+                                now = 0
+                        return now, val 
+
+        def eval(self,lres):
+                from txtfile import read_datafile 
+                from onsetcompare import onset_roc
+                amode = 'roc'
+                vmode = 'verbose'
+                vmode = ''
+                for i in range(len(lres)): lres[i] = lres[i][0]*self.params.step
+                ltru = read_datafile(self.input.replace('.wav','.txt'),depth=0)
+                if vmode=='verbose':
+                        print "Running with mode %s" % self.params.mode, 
+                        print " and threshold %f" % self.params.threshold, 
+                        print " on file", input
+                #print ltru; print lres
+                if amode == 'localisation':
+                        l = onset_diffs(ltru,lres,self.params.tol)
+                        mean = 0
+                        for i in l: mean += i
+                        if len(l): print "%.3f" % (mean/len(l))
+                        else: print "?0"
+                elif amode == 'roc':
+                        self.orig, self.missed, self.merged, \
+                                self.expc, self.bad, self.doubled = \
+                                onset_roc(ltru,lres,self.params.tol)
+
+        def plot(self,onsets,ofunc):
+                import Gnuplot, Gnuplot.funcutils
+                import aubio.txtfile
+                import os.path
+                import numarray
+                from aubio.onsetcompare import onset_roc
+
+                self.lenofunc = len(ofunc) 
+                self.maxofunc = max(max(ofunc), self.maxofunc)
+                # onset detection function 
+                downtime = numarray.arange(len(ofunc))/self.step
+                self.d.append(Gnuplot.Data(downtime,ofunc,with='lines'))
+
+                # detected onsets
+                x1 = numarray.array(onsets)/self.step
+                y1 = self.maxofunc*numarray.ones(len(onsets))
+                self.d.append(Gnuplot.Data(x1,y1,with='impulses'))
+                self.d2.append(Gnuplot.Data(x1,-y1,with='impulses'))
+
+                # check if datafile exists truth
+                datafile = self.input.replace('.wav','.txt')
+                if datafile == self.input: datafile = ""
+                if not os.path.isfile(datafile):
+                        self.title = "truth file not found"
+                        t = Gnuplot.Data(0,0,with='impulses') 
+                else:
+                        t_onsets = aubio.txtfile.read_datafile(datafile)
+                        y2 = self.maxofunc*numarray.ones(len(t_onsets))
+                        x2 = numarray.array(t_onsets).resize(len(t_onsets))
+                        self.d2.append(Gnuplot.Data(x2,y2,with='impulses'))
+                        
+                        tol = 0.050 
+
+                        orig, missed, merged, expc, bad, doubled = \
+                                onset_roc(x2,x1,tol)
+                        self.title = "GD %2.3f%% FP %2.3f%%" % \
+                                ((100*float(orig-missed-merged)/(orig)),
+                                 (100*float(bad+doubled)/(orig)))
+
+
+        def plotplot(self,outplot=None):
+                from aubio.gnuplot import gnuplot_init, audio_to_array, make_audio_plot
+                import re
+                # audio data
+                time,data = audio_to_array(self.input)
+                self.d2.append(make_audio_plot(time,data))
+                # prepare the plot
+                g = gnuplot_init(outplot)
+
+                g('set title \'%s %s\'' % (re.sub('.*/','',self.input),self.title))
+
+                g('set multiplot')
+
+                # hack to align left axis
+                g('set lmargin 15')
+
+                # plot waveform and onsets
+                g('set size 1,0.3')
+                g('set origin 0,0.7')
+                g('set xrange [0:%f]' % max(time)) 
+                g('set yrange [-1:1]') 
+                g.ylabel('amplitude')
+                g.plot(*self.d2)
+                
+                g('unset title')
+
+                # plot onset detection function
+                g('set size 1,0.7')
+                g('set origin 0,0')
+                g('set xrange [0:%f]' % (self.lenofunc/self.step))
+                g('set yrange [0:%f]' % (self.maxofunc*1.01))
+                g.xlabel('time')
+                g.ylabel('onset detection value')
+                g.plot(*self.d)
+
+                g('unset multiplot')
+
+class taskcut(task):
+        def __init__(self,input,slicetimes,params=None,output=None):
+                """ open the input file and initialize arguments 
+                parameters should be set *before* calling this method.
+                """
+                task.__init__(self,input,output=None,params=params)
+                self.newname   = "%s%s%09.5f%s%s" % (self.input.split(".")[0].split("/")[-1],".",
+                                        self.frameread/self.step,".",self.input.split(".")[-1])
+                self.fileo       = sndfile(self.newname,model=self.filei)
+                self.myvec       = fvec(self.params.hopsize,self.channels)
+                self.mycopy     = fvec(self.params.hopsize,self.channels)
+                self.slicetimes = slicetimes 
+
+        def __call__(self):
+                task.__call__(self)
+                # write to current file
+                if len(self.slicetimes) and self.frameread >= self.slicetimes[0]:
+                        self.slicetimes.pop(0)
+                        # write up to 1st zero crossing
+                        zerocross = 0
+                        while ( abs( self.myvec.get(zerocross,0) ) > self.params.zerothres ):
+                                zerocross += 1
+                        writesize = self.fileo.write(zerocross,self.myvec)
+                        fromcross = 0
+                        while (zerocross < self.readsize):
+                                for i in range(self.channels):
+                                        self.mycopy.set(self.myvec.get(zerocross,i),fromcross,i)
+                                        fromcross += 1
+                                        zerocross += 1
+                        del self.fileo
+                        self.fileo = sndfile("%s%s%09.5f%s%s" % 
+                                (self.input.split(".")[0].split("/")[-1],".",
+                                self.frameread/self.step,".",self.input.split(".")[-1]),model=self.filei)
+                        writesize = self.fileo.write(fromcross,self.mycopy)
+                else:
+                        writesize = self.fileo.write(self.readsize,self.myvec)