| 1 | from aubioclass import * |
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| 2 | |
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| 3 | def get_onset_mode(nvalue): |
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| 4 | """ utility function to convert a string to aubio_onsetdetection_type """ |
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| 5 | if nvalue == 'complexdomain' or nvalue == 'complex' : |
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| 6 | return aubio_onset_complex |
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| 7 | elif nvalue == 'hfc' : |
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| 8 | return aubio_onset_hfc |
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| 9 | elif nvalue == 'phase' : |
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| 10 | return aubio_onset_phase |
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| 11 | elif nvalue == 'specdiff' : |
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| 12 | return aubio_onset_specdiff |
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| 13 | elif nvalue == 'energy' : |
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| 14 | return aubio_onset_energy |
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| 15 | elif nvalue == 'kl' : |
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| 16 | return aubio_onset_kl |
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| 17 | elif nvalue == 'mkl' : |
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| 18 | return aubio_onset_mkl |
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| 19 | elif nvalue == 'dual' : |
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| 20 | return 'dual' |
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| 21 | else: |
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| 22 | import sys |
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| 23 | print "unknown onset detection function selected" |
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| 24 | sys.exit(1) |
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| 25 | |
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| 26 | def get_pitch_mode(nvalue): |
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| 27 | """ utility function to convert a string to aubio_pitchdetection_type """ |
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| 28 | if nvalue == 'mcomb' : |
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| 29 | return aubio_pitch_mcomb |
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| 30 | elif nvalue == 'yin' : |
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| 31 | return aubio_pitch_yin |
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| 32 | elif nvalue == 'fcomb' : |
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| 33 | return aubio_pitch_fcomb |
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| 34 | elif nvalue == 'schmitt': |
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| 35 | return aubio_pitch_schmitt |
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| 36 | else: |
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| 37 | import sys |
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| 38 | print "error: unknown pitch detection function selected" |
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| 39 | sys.exit(1) |
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| 40 | |
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| 41 | def check_onset_mode(option, opt, value, parser): |
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| 42 | """ wrapper function to convert a list of modes to |
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| 43 | aubio_onsetdetection_type """ |
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| 44 | nvalues = parser.rargs[0].split(',') |
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| 45 | val = [] |
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| 46 | for nvalue in nvalues: |
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| 47 | val.append(get_onset_mode(nvalue)) |
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| 48 | setattr(parser.values, option.dest, val) |
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| 49 | |
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| 50 | def check_pitch_mode(option, opt, value, parser): |
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| 51 | """ utility function to convert a string to aubio_pitchdetection_type""" |
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| 52 | nvalues = parser.rargs[0].split(',') |
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| 53 | val = [] |
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| 54 | for nvalue in nvalues: |
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| 55 | val.append(get_pitch_mode(nvalue)) |
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| 56 | setattr(parser.values, option.dest, val) |
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| 57 | |
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| 58 | def check_pitchm_mode(option, opt, value, parser): |
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| 59 | """ utility function to convert a string to aubio_pitchdetection_mode """ |
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| 60 | nvalue = parser.rargs[0] |
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| 61 | if nvalue == 'freq' : |
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| 62 | setattr(parser.values, option.dest, aubio_pitchm_freq) |
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| 63 | elif nvalue == 'midi' : |
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| 64 | setattr(parser.values, option.dest, aubio_pitchm_midi) |
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| 65 | elif nvalue == 'cent' : |
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| 66 | setattr(parser.values, option.dest, aubio_pitchm_cent) |
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| 67 | elif nvalue == 'bin' : |
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| 68 | setattr(parser.values, option.dest, aubio_pitchm_bin) |
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| 69 | else: |
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| 70 | import sys |
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| 71 | print "error: unknown pitch detection output selected" |
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| 72 | sys.exit(1) |
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| 73 | |
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| 74 | |
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| 75 | #def getonsets(filein,threshold=0.2,silence=-70.,bufsize=1024,hopsize=512, |
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| 76 | # mode='dual',localmin=False,storefunc=False,derivate=False): |
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| 77 | # frameread = 0 |
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| 78 | # filei = sndfile(filein) |
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| 79 | # channels = filei.channels() |
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| 80 | # myvec = fvec(hopsize,channels) |
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| 81 | # readsize = filei.read(hopsize,myvec) |
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| 82 | # opick = onsetpick(bufsize,hopsize,channels,myvec,threshold, |
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| 83 | # mode=mode,derivate=derivate) |
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| 84 | # mylist = list() |
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| 85 | # if localmin: |
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| 86 | # ovalist = [0., 0., 0., 0., 0.] |
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| 87 | # ofunclist = [] |
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| 88 | # while(readsize): |
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| 89 | # readsize = filei.read(hopsize,myvec) |
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| 90 | # isonset,val = opick.do(myvec) |
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| 91 | # if (aubio_silence_detection(myvec(),silence)): |
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| 92 | # isonset=0 |
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| 93 | # if localmin: |
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| 94 | # if val > 0: ovalist.append(val) |
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| 95 | # else: ovalist.append(0) |
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| 96 | # ovalist.pop(0) |
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| 97 | # if storefunc: |
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| 98 | # ofunclist.append(val) |
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| 99 | # if (isonset == 1): |
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| 100 | # if localmin: |
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| 101 | # i=len(ovalist)-1 |
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| 102 | # # find local minima before peak |
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| 103 | # while ovalist[i-1] < ovalist[i] and i > 0: |
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| 104 | # i -= 1 |
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| 105 | # now = (frameread+1-i) |
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| 106 | # else: |
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| 107 | # now = frameread |
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| 108 | # if now > 0 : |
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| 109 | # mylist.append(now) |
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| 110 | # else: |
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| 111 | # now = 0 |
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| 112 | # mylist.append(now) |
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| 113 | # frameread += 1 |
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| 114 | # return mylist, ofunclist |
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| 115 | # |
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| 116 | #def cutfile(filein,slicetimes,zerothres=0.008,bufsize=1024,hopsize=512): |
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| 117 | # frameread = 0 |
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| 118 | # readsize = hopsize |
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| 119 | # filei = sndfile(filein) |
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| 120 | # framestep = hopsize/(filei.samplerate()+0.) |
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| 121 | # channels = filei.channels() |
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| 122 | # newname = "%s%s%09.5f%s%s" % (filein.split(".")[0].split("/")[-1],".", |
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| 123 | # frameread*framestep,".",filein.split(".")[-1]) |
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| 124 | # fileo = sndfile(newname,model=filei) |
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| 125 | # myvec = fvec(hopsize,channels) |
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| 126 | # mycopy = fvec(hopsize,channels) |
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| 127 | # while(readsize==hopsize): |
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| 128 | # readsize = filei.read(hopsize,myvec) |
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| 129 | # # write to current file |
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| 130 | # if len(slicetimes) and frameread >= slicetimes[0]: |
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| 131 | # slicetimes.pop(0) |
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| 132 | # # write up to 1st zero crossing |
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| 133 | # zerocross = 0 |
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| 134 | # while ( abs( myvec.get(zerocross,0) ) > zerothres ): |
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| 135 | # zerocross += 1 |
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| 136 | # writesize = fileo.write(zerocross,myvec) |
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| 137 | # fromcross = 0 |
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| 138 | # while (zerocross < readsize): |
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| 139 | # for i in range(channels): |
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| 140 | # mycopy.set(myvec.get(zerocross,i),fromcross,i) |
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| 141 | # fromcross += 1 |
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| 142 | # zerocross += 1 |
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| 143 | # del fileo |
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| 144 | # fileo = sndfile("%s%s%09.5f%s%s" % |
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| 145 | # (filein.split(".")[0].split("/")[-1],".", |
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| 146 | # frameread*framestep,".",filein.split(".")[-1]),model=filei) |
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| 147 | # writesize = fileo.write(fromcross,mycopy) |
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| 148 | # else: |
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| 149 | # writesize = fileo.write(readsize,myvec) |
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| 150 | # frameread += 1 |
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| 151 | # del fileo |
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| 152 | # |
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| 153 | # |
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| 154 | #def getsilences(filein,hopsize=512,silence=-70): |
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| 155 | # frameread = 0 |
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| 156 | # filei = sndfile(filein) |
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| 157 | # srate = filei.samplerate() |
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| 158 | # channels = filei.channels() |
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| 159 | # myvec = fvec(hopsize,channels) |
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| 160 | # readsize = filei.read(hopsize,myvec) |
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| 161 | # mylist = [] |
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| 162 | # wassilence = 0 |
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| 163 | # while(readsize==hopsize): |
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| 164 | # readsize = filei.read(hopsize,myvec) |
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| 165 | # if (aubio_silence_detection(myvec(),silence)==1): |
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| 166 | # if wassilence == 0: |
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| 167 | # mylist.append(frameread) |
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| 168 | # wassilence == 1 |
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| 169 | # else: wassilence = 0 |
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| 170 | # frameread += 1 |
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| 171 | # return mylist |
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| 172 | # |
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| 173 | # |
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| 174 | #def getpitch(filein,mode=aubio_pitch_mcomb,bufsize=1024,hopsize=512,omode=aubio_pitchm_freq, |
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| 175 | # samplerate=44100.,silence=-70): |
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| 176 | # frameread = 0 |
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| 177 | # filei = sndfile(filein) |
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| 178 | # srate = filei.samplerate() |
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| 179 | # channels = filei.channels() |
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| 180 | # myvec = fvec(hopsize,channels) |
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| 181 | # readsize = filei.read(hopsize,myvec) |
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| 182 | # pitchdet = pitchdetection(mode=mode,bufsize=bufsize,hopsize=hopsize, |
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| 183 | # channels=channels,samplerate=srate,omode=omode) |
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| 184 | # mylist = [] |
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| 185 | # while(readsize==hopsize): |
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| 186 | # readsize = filei.read(hopsize,myvec) |
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| 187 | # freq = pitchdet(myvec) |
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| 188 | # #print "%.3f %.2f" % (now,freq) |
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| 189 | # if (aubio_silence_detection(myvec(),silence)!=1): |
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| 190 | # mylist.append(freq) |
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| 191 | # else: |
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| 192 | # mylist.append(-1.) |
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| 193 | # frameread += 1 |
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| 194 | # return mylist |
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| 195 | |
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| 196 | |
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| 197 | class taskparams(object): |
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| 198 | """ default parameters for task classes """ |
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| 199 | def __init__(self,input=None,output=None): |
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| 200 | self.silence = -70 |
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| 201 | self.derivate = False |
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| 202 | self.localmin = False |
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| 203 | self.delay = 0. |
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| 204 | self.storefunc = False |
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| 205 | self.bufsize = 512 |
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| 206 | self.hopsize = 256 |
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| 207 | self.samplerate = 44100 |
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| 208 | self.tol = 0.05 |
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| 209 | self.mintol = 0.0 |
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| 210 | self.step = float(self.hopsize)/float(self.samplerate) |
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| 211 | self.threshold = 0.1 |
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| 212 | self.onsetmode = 'dual' |
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| 213 | self.pitchmode = 'yin' |
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| 214 | self.omode = aubio_pitchm_freq |
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| 215 | |
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| 216 | class task(taskparams): |
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| 217 | """ default template class to apply tasks on a stream """ |
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| 218 | def __init__(self,input,output=None,params=None): |
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| 219 | """ open the input file and initialize default argument |
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| 220 | parameters should be set *before* calling this method. |
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| 221 | """ |
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| 222 | import time |
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| 223 | self.tic = time.time() |
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| 224 | if params == None: self.params = taskparams() |
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| 225 | else: self.params = params |
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| 226 | self.frameread = 0 |
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| 227 | self.readsize = self.params.hopsize |
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| 228 | self.input = input |
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| 229 | self.filei = sndfile(self.input) |
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| 230 | self.srate = self.filei.samplerate() |
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| 231 | self.channels = self.filei.channels() |
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| 232 | self.step = float(self.srate)/float(self.params.hopsize) |
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| 233 | self.myvec = fvec(self.params.hopsize,self.channels) |
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| 234 | self.output = output |
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| 235 | |
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| 236 | def __call__(self): |
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| 237 | self.readsize = self.filei.read(self.params.hopsize,self.myvec) |
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| 238 | self.frameread += 1 |
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| 239 | |
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| 240 | def compute_all(self): |
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| 241 | """ Compute data """ |
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| 242 | mylist = [] |
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| 243 | while(self.readsize==self.params.hopsize): |
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| 244 | tmp = self() |
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| 245 | if tmp: mylist.append(tmp) |
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| 246 | return mylist |
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| 247 | |
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| 248 | def eval(self,results): |
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| 249 | """ Eval data """ |
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| 250 | pass |
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| 251 | |
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| 252 | def plot(self): |
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| 253 | """ Plot data """ |
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| 254 | pass |
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| 255 | |
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| 256 | def time(self): |
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| 257 | import time |
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| 258 | print "CPU time is now %f seconds," % time.clock(), |
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| 259 | print "task execution took %f seconds" % (time.time() - self.tic) |
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| 260 | |
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| 261 | class tasksilence(task): |
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| 262 | wassilence = 1 |
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| 263 | issilence = 1 |
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| 264 | def __call__(self): |
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| 265 | task.__call__(self) |
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| 266 | if (aubio_silence_detection(self.myvec(),self.params.silence)==1): |
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| 267 | if self.wassilence == 1: self.issilence = 1 |
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| 268 | else: self.issilence = 2 |
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| 269 | self.wassilence = 1 |
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| 270 | else: |
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| 271 | if self.wassilence <= 0: self.issilence = 0 |
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| 272 | else: self.issilence = -1 |
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| 273 | self.wassilence = 0 |
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| 274 | if self.issilence == -1: |
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| 275 | return self.frameread, -1 |
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| 276 | elif self.issilence == 2: |
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| 277 | return self.frameread, 2 |
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| 278 | |
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| 279 | class taskpitch(task): |
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| 280 | def __init__(self,input,params=None): |
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| 281 | task.__init__(self,input,params=params) |
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| 282 | self.pitchdet = pitchdetection(mode=get_pitch_mode(self.params.pitchmode), |
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| 283 | bufsize=self.params.bufsize, |
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| 284 | hopsize=self.params.hopsize, |
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| 285 | channels=self.channels, |
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| 286 | samplerate=self.srate, |
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| 287 | omode=self.params.omode) |
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| 288 | |
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| 289 | def __call__(self): |
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| 290 | #print "%.3f %.2f" % (now,freq) |
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| 291 | task.__call__(self) |
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| 292 | freq = self.pitchdet(self.myvec) |
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| 293 | if (aubio_silence_detection(self.myvec(),self.params.silence)!=1): |
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| 294 | return freq |
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| 295 | else: |
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| 296 | return -1. |
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| 297 | |
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| 298 | def gettruth(self): |
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| 299 | """ big hack to extract midi note from /path/to/file.<midinote>.wav """ |
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| 300 | floatpit = self.input.split('.')[-2] |
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| 301 | try: |
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| 302 | return aubio_miditofreq(float(floatpit)) |
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| 303 | except ValueError: |
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| 304 | print "ERR: no truth file found" |
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| 305 | return 0 |
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| 306 | |
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| 307 | def eval(self,results): |
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| 308 | def mmean(l): |
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| 309 | return sum(l)/max(float(len(l)),1) |
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| 310 | |
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| 311 | from median import short_find |
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| 312 | self.truth = self.gettruth() |
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| 313 | res = [] |
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| 314 | for i in results: |
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| 315 | if i == -1: pass |
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| 316 | else: |
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| 317 | res.append(self.truth-i) |
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| 318 | if not res: |
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| 319 | avg = self.truth; med = self.truth |
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| 320 | else: |
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| 321 | avg = mmean(res) |
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| 322 | med = short_find(res,len(res)/2) |
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| 323 | return self.truth, self.truth-med, self.truth-avg |
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| 324 | |
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| 325 | def plot(self,pitch,outplot=None): |
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| 326 | from aubio.gnuplot import plot_pitch |
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| 327 | plot_pitch(self.input, |
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| 328 | pitch, |
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| 329 | samplerate=float(self.srate), |
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| 330 | hopsize=self.params.hopsize, |
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| 331 | outplot=outplot) |
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| 332 | |
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| 333 | |
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| 334 | class taskonset(task): |
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| 335 | def __init__(self,input,output=None,params=None): |
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| 336 | """ open the input file and initialize arguments |
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| 337 | parameters should be set *before* calling this method. |
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| 338 | """ |
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| 339 | task.__init__(self,input,params=params) |
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| 340 | self.opick = onsetpick(self.params.bufsize, |
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| 341 | self.params.hopsize, |
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| 342 | self.channels, |
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| 343 | self.myvec, |
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| 344 | self.params.threshold, |
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| 345 | mode=get_onset_mode(self.params.onsetmode), |
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| 346 | derivate=self.params.derivate) |
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| 347 | self.olist = [] |
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| 348 | self.ofunc = [] |
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| 349 | self.d,self.d2 = [],[] |
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| 350 | self.maxofunc = 0 |
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| 351 | self.last = 0 |
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| 352 | if self.params.localmin: |
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| 353 | self.ovalist = [0., 0., 0., 0., 0.] |
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| 354 | |
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| 355 | def __call__(self): |
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| 356 | task.__call__(self) |
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| 357 | isonset,val = self.opick.do(self.myvec) |
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| 358 | if (aubio_silence_detection(self.myvec(),self.params.silence)): |
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| 359 | isonset=0 |
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| 360 | if self.params.storefunc: |
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| 361 | self.ofunc.append(val) |
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| 362 | if self.params.localmin: |
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| 363 | if val > 0: self.ovalist.append(val) |
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| 364 | else: self.ovalist.append(0) |
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| 365 | self.ovalist.pop(0) |
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| 366 | if (isonset == 1): |
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| 367 | if self.params.localmin: |
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| 368 | i=len(self.ovalist)-1 |
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| 369 | # find local minima before peak |
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| 370 | while self.ovalist[i-1] < self.ovalist[i] and i > 0: |
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| 371 | i -= 1 |
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| 372 | now = (self.frameread+1-i) |
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| 373 | else: |
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| 374 | now = self.frameread |
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| 375 | if self.params.delay != 0.: now -= self.params.delay |
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| 376 | if now < 0 : |
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| 377 | now = 0 |
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| 378 | if self.params.mintol: |
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| 379 | #print now - self.last, self.params.mintol |
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| 380 | if (now - self.last) > self.params.mintol: |
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| 381 | self.last = now |
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| 382 | return now, val |
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| 383 | else: |
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| 384 | return now, val |
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| 385 | |
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| 386 | |
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| 387 | def eval(self,inputdata,ftru,mode='roc',vmode=''): |
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| 388 | from txtfile import read_datafile |
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| 389 | from onsetcompare import onset_roc, onset_diffs, onset_rocloc |
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| 390 | ltru = read_datafile(ftru,depth=0) |
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| 391 | lres = [] |
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| 392 | for i in range(len(inputdata)): lres.append(inputdata[i][0]*self.params.step) |
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| 393 | if vmode=='verbose': |
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| 394 | print "Running with mode %s" % self.params.onsetmode, |
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| 395 | print " and threshold %f" % self.params.threshold, |
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| 396 | print " on file", self.input |
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| 397 | #print ltru; print lres |
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| 398 | if mode == 'local': |
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| 399 | l = onset_diffs(ltru,lres,self.params.tol) |
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| 400 | mean = 0 |
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| 401 | for i in l: mean += i |
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| 402 | if len(l): mean = "%.3f" % (mean/len(l)) |
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| 403 | else: mean = "?0" |
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| 404 | return l, mean |
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| 405 | elif mode == 'roc': |
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| 406 | self.orig, self.missed, self.merged, \ |
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| 407 | self.expc, self.bad, self.doubled = \ |
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| 408 | onset_roc(ltru,lres,self.params.tol) |
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| 409 | elif mode == 'rocloc': |
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| 410 | self.v = {} |
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| 411 | self.v['orig'], self.v['missed'], self.v['Tm'], \ |
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| 412 | self.v['expc'], self.v['bad'], self.v['Td'], \ |
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| 413 | self.v['l'], self.v['labs'] = \ |
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| 414 | onset_rocloc(ltru,lres,self.params.tol) |
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| 415 | |
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| 416 | def plot(self,onsets,ofunc): |
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| 417 | import Gnuplot, Gnuplot.funcutils |
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| 418 | import aubio.txtfile |
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| 419 | import os.path |
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| 420 | import numarray |
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| 421 | from aubio.onsetcompare import onset_roc |
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| 422 | |
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| 423 | self.lenofunc = len(ofunc) |
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| 424 | self.maxofunc = max(max(ofunc), self.maxofunc) |
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| 425 | # onset detection function |
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| 426 | downtime = numarray.arange(len(ofunc))/self.step |
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| 427 | self.d.append(Gnuplot.Data(downtime,ofunc,with='lines')) |
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| 428 | |
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| 429 | # detected onsets |
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| 430 | x1 = numarray.array(onsets)/self.step |
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| 431 | y1 = self.maxofunc*numarray.ones(len(onsets)) |
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| 432 | self.d.append(Gnuplot.Data(x1,y1,with='impulses')) |
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| 433 | self.d2.append(Gnuplot.Data(x1,-y1,with='impulses')) |
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| 434 | |
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| 435 | # check if datafile exists truth |
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| 436 | datafile = self.input.replace('.wav','.txt') |
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| 437 | if datafile == self.input: datafile = "" |
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| 438 | if not os.path.isfile(datafile): |
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| 439 | self.title = "truth file not found" |
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| 440 | t = Gnuplot.Data(0,0,with='impulses') |
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| 441 | else: |
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| 442 | t_onsets = aubio.txtfile.read_datafile(datafile) |
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| 443 | y2 = self.maxofunc*numarray.ones(len(t_onsets)) |
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| 444 | x2 = numarray.array(t_onsets).resize(len(t_onsets)) |
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| 445 | self.d2.append(Gnuplot.Data(x2,y2,with='impulses')) |
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| 446 | |
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| 447 | tol = 0.050 |
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| 448 | |
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| 449 | orig, missed, merged, expc, bad, doubled = \ |
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| 450 | onset_roc(x2,x1,tol) |
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| 451 | self.title = "GD %2.3f%% FP %2.3f%%" % \ |
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| 452 | ((100*float(orig-missed-merged)/(orig)), |
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| 453 | (100*float(bad+doubled)/(orig))) |
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| 454 | |
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| 455 | |
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| 456 | def plotplot(self,outplot=None): |
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| 457 | from aubio.gnuplot import gnuplot_init, audio_to_array, make_audio_plot |
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| 458 | import re |
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| 459 | # audio data |
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| 460 | time,data = audio_to_array(self.input) |
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| 461 | self.d2.append(make_audio_plot(time,data)) |
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| 462 | # prepare the plot |
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| 463 | g = gnuplot_init(outplot) |
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| 464 | |
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| 465 | g('set title \'%s %s\'' % (re.sub('.*/','',self.input),self.title)) |
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| 466 | |
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| 467 | g('set multiplot') |
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| 468 | |
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| 469 | # hack to align left axis |
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| 470 | g('set lmargin 15') |
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| 471 | |
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| 472 | # plot waveform and onsets |
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| 473 | g('set size 1,0.3') |
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| 474 | g('set origin 0,0.7') |
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| 475 | g('set xrange [0:%f]' % max(time)) |
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| 476 | g('set yrange [-1:1]') |
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| 477 | g.ylabel('amplitude') |
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| 478 | g.plot(*self.d2) |
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| 479 | |
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| 480 | g('unset title') |
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| 481 | |
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| 482 | # plot onset detection function |
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| 483 | g('set size 1,0.7') |
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| 484 | g('set origin 0,0') |
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| 485 | g('set xrange [0:%f]' % (self.lenofunc/self.step)) |
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| 486 | g('set yrange [0:%f]' % (self.maxofunc*1.01)) |
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| 487 | g.xlabel('time') |
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| 488 | g.ylabel('onset detection value') |
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| 489 | g.plot(*self.d) |
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| 490 | |
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| 491 | g('unset multiplot') |
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| 492 | |
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| 493 | class taskcut(task): |
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| 494 | def __init__(self,input,slicetimes,params=None,output=None): |
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| 495 | """ open the input file and initialize arguments |
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| 496 | parameters should be set *before* calling this method. |
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| 497 | """ |
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| 498 | task.__init__(self,input,output=None,params=params) |
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| 499 | self.newname = "%s%s%09.5f%s%s" % (self.input.split(".")[0].split("/")[-1],".", |
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| 500 | self.frameread/self.step,".",self.input.split(".")[-1]) |
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| 501 | self.fileo = sndfile(self.newname,model=self.filei) |
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| 502 | self.myvec = fvec(self.params.hopsize,self.channels) |
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| 503 | self.mycopy = fvec(self.params.hopsize,self.channels) |
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| 504 | self.slicetimes = slicetimes |
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| 505 | |
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| 506 | def __call__(self): |
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| 507 | task.__call__(self) |
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| 508 | # write to current file |
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| 509 | if len(self.slicetimes) and self.frameread >= self.slicetimes[0]: |
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| 510 | self.slicetimes.pop(0) |
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| 511 | # write up to 1st zero crossing |
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| 512 | zerocross = 0 |
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| 513 | while ( abs( self.myvec.get(zerocross,0) ) > self.params.zerothres ): |
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| 514 | zerocross += 1 |
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| 515 | writesize = self.fileo.write(zerocross,self.myvec) |
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| 516 | fromcross = 0 |
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| 517 | while (zerocross < self.readsize): |
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| 518 | for i in range(self.channels): |
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| 519 | self.mycopy.set(self.myvec.get(zerocross,i),fromcross,i) |
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| 520 | fromcross += 1 |
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| 521 | zerocross += 1 |
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| 522 | del self.fileo |
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| 523 | self.fileo = sndfile("%s%s%09.5f%s%s" % |
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| 524 | (self.input.split(".")[0].split("/")[-1],".", |
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| 525 | self.frameread/self.step,".",self.input.split(".")[-1]),model=self.filei) |
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| 526 | writesize = self.fileo.write(fromcross,self.mycopy) |
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| 527 | else: |
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| 528 | writesize = self.fileo.write(self.readsize,self.myvec) |
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| 529 | |
|---|
| 530 | class taskbeat(taskonset): |
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| 531 | def __init__(self,input,params=None,output=None): |
|---|
| 532 | """ open the input file and initialize arguments |
|---|
| 533 | parameters should be set *before* calling this method. |
|---|
| 534 | """ |
|---|
| 535 | taskonset.__init__(self,input,output=None,params=params) |
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| 536 | self.btwinlen = 512**2/self.params.hopsize |
|---|
| 537 | self.btstep = self.btwinlen/4 |
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| 538 | self.btoutput = fvec(self.btstep,self.channels) |
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| 539 | self.dfframe = fvec(self.btwinlen,self.channels) |
|---|
| 540 | self.bt = beattracking(self.btwinlen,self.channels) |
|---|
| 541 | self.pos2 = 0 |
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| 542 | |
|---|
| 543 | def __call__(self): |
|---|
| 544 | taskonset.__call__(self) |
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| 545 | # write to current file |
|---|
| 546 | if self.pos2 == self.btstep - 1 : |
|---|
| 547 | self.bt.do(self.dfframe,self.btoutput) |
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| 548 | for i in range (self.btwinlen - self.btstep): |
|---|
| 549 | self.dfframe.set(self.dfframe.get(i+self.btstep,0),i,0) |
|---|
| 550 | for i in range(self.btwinlen - self.btstep, self.btwinlen): |
|---|
| 551 | self.dfframe.set(0,i,0) |
|---|
| 552 | self.pos2 = -1; |
|---|
| 553 | self.pos2 += 1 |
|---|
| 554 | val = self.opick.pp.getval() |
|---|
| 555 | self.dfframe.set(val,self.btwinlen - self.btstep + self.pos2,0) |
|---|
| 556 | i=0 |
|---|
| 557 | for i in range(1,int( self.btoutput.get(0,0) ) ): |
|---|
| 558 | if self.pos2 == self.btoutput.get(i,0) and \ |
|---|
| 559 | aubio_silence_detection(self.myvec(), |
|---|
| 560 | self.params.silence)!=1: |
|---|
| 561 | return self.frameread, 0 |
|---|
| 562 | |
|---|
| 563 | def eval(self,results): |
|---|
| 564 | pass |
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