3 """ this file was written by Paul Brossier
4 it is released under the GNU/GPL license.
10 def aubio_cut_parser():
11 usage = "usage: %s [options] -i soundfile" % sys.argv[0]
12 usage += "\n help: %s -h" % sys.argv[0]
13 parser = argparse.ArgumentParser()
14 parser.add_argument("source_file", default=None, nargs='?',
15 help="input sound file to analyse", metavar = "<source_file>")
16 parser.add_argument("-i", "--input", action = "store", dest = "source_file2",
17 help="input sound file to analyse", metavar = "<source_file>")
18 parser.add_argument("-O","--onset-method",
19 action="store", dest="onset_method", default='default',
20 metavar = "<onset_method>",
21 help="onset detection method [default=default] \
22 complexdomain|hfc|phase|specdiff|energy|kl|mkl")
24 parser.add_argument("-b","--beat",
25 action="store_true", dest="beat", default=False,
26 help="use beat locations")
28 parser.add_argument("-S","--silencecut",
29 action="store_true", dest="silencecut", default=False,
30 help="use silence locations")
31 parser.add_argument("-s","--silence",
33 action="store", dest="silence", default=-70,
34 help="silence threshold [default=-70]")
36 # algorithm parameters
37 parser.add_argument("-r", "--samplerate",
38 metavar = "<freq>", type=int,
39 action="store", dest="samplerate", default=0,
40 help="samplerate at which the file should be represented")
41 parser.add_argument("-B","--bufsize",
42 action="store", dest="bufsize", default=512,
43 metavar = "<size>", type=int,
44 help="buffer size [default=512]")
45 parser.add_argument("-H","--hopsize",
46 metavar = "<size>", type=int,
47 action="store", dest="hopsize", default=256,
48 help="overlap size [default=256]")
49 parser.add_argument("-t","--onset-threshold",
50 metavar = "<value>", type=float,
51 action="store", dest="threshold", default=0.3,
52 help="onset peak picking threshold [default=0.3]")
53 parser.add_argument("-c","--cut",
54 action="store_true", dest="cut", default=False,
55 help="cut input sound file at detected labels \
56 best used with option -L")
59 parser.add_argument("-M","--minioi",
60 metavar = "<value>", type=str,
61 action="store", dest="minioi", default="12ms",
62 help="minimum inter onset interval [default=12ms]")
65 parser.add_argument("-D","--delay",
66 action = "store", dest = "delay", type = float,
67 metavar = "<seconds>", default=0,
68 help="number of seconds to take back [default=system]\
69 default system delay is 3*hopsize/samplerate")
70 parser.add_argument("-C","--dcthreshold",
72 action="store", dest="dcthreshold", default=1.,
73 help="onset peak picking DC component [default=1.]")
74 parser.add_argument("-L","--localmin",
75 action="store_true", dest="localmin", default=False,
76 help="use local minima after peak detection")
77 parser.add_argument("-d","--derivate",
78 action="store_true", dest="derivate", default=False,
79 help="derivate onset detection function")
80 parser.add_argument("-z","--zerocross",
82 action="store", dest="zerothres", default=0.008,
83 help="zero-crossing threshold for slicing [default=0.00008]")
87 parser.add_argument("-p","--plot",
88 action="store_true", dest="plot", default=False,
90 parser.add_argument("-x","--xsize",
92 action="store", dest="xsize", default=1.,
93 type=float, help="define xsize for plot")
94 parser.add_argument("-y","--ysize",
96 action="store", dest="ysize", default=1.,
97 type=float, help="define ysize for plot")
98 parser.add_argument("-f","--function",
99 action="store_true", dest="func", default=False,
100 help="print detection function")
101 parser.add_argument("-n","--no-onsets",
102 action="store_true", dest="nplot", default=False,
103 help="do not plot detected onsets")
104 parser.add_argument("-O","--outplot",
105 metavar = "<output_image>",
106 action="store", dest="outplot", default=None,
107 help="save plot to output.{ps,png}")
108 parser.add_argument("-F","--spectrogram",
109 action="store_true", dest="spectro", default=False,
110 help="add spectrogram to the plot")
112 parser.add_argument("-o","--output", type = str,
113 metavar = "<outputdir>",
114 action="store", dest="output_directory", default=None,
115 help="specify path where slices of the original file should be created")
116 parser.add_argument("--cut-until-nsamples", type = int,
117 metavar = "<samples>",
118 action = "store", dest = "cut_until_nsamples", default = None,
119 help="how many extra samples should be added at the end of each slice")
120 parser.add_argument("--cut-every-nslices", type = int,
121 metavar = "<samples>",
122 action = "store", dest = "cut_every_nslices", default = None,
123 help="how many slices should be groupped together at each cut")
124 parser.add_argument("--cut-until-nslices", type = int,
125 metavar = "<slices>",
126 action = "store", dest = "cut_until_nslices", default = None,
127 help="how many extra slices should be added at the end of each slice")
129 parser.add_argument("-v","--verbose",
130 action="store_true", dest="verbose", default=True,
131 help="make lots of noise [default]")
132 parser.add_argument("-q","--quiet",
133 action="store_false", dest="verbose", default=True,
138 def _cut_analyze(options):
139 source_file = options.source_file
140 hopsize = options.hopsize
141 bufsize = options.bufsize
142 samplerate = options.samplerate
143 source_file = options.source_file
146 from aubio import onset, tempo, source
148 s = source(source_file, samplerate, hopsize)
150 samplerate = s.get_samplerate()
151 options.samplerate = samplerate
154 o = tempo(options.onset_method, bufsize, hopsize, samplerate=samplerate)
156 o = onset(options.onset_method, bufsize, hopsize, samplerate=samplerate)
158 if options.minioi.endswith('ms'):
159 o.set_minioi_ms(int(options.minioi[:-2]))
160 elif options.minioi.endswith('s'):
161 o.set_minioi_s(int(options.minioi[:-1]))
163 o.set_minioi(int(options.minioi))
164 o.set_threshold(options.threshold)
171 timestamps.append (o.get_last())
172 if options.verbose: print ("%.4f" % o.get_last_s())
174 if read < hopsize: break
176 return timestamps, total_frames
178 def _cut_slice(options, timestamps):
180 nstamps = len(timestamps)
182 # generate output files
183 from aubio.slicing import slice_source_at_stamps
184 timestamps_end = None
185 if options.cut_every_nslices:
186 timestamps = timestamps[::options.cut_every_nslices]
187 nstamps = len(timestamps)
188 if options.cut_until_nslices and options.cut_until_nsamples:
189 print ("warning: using cut_until_nslices, but cut_until_nsamples is set")
190 if options.cut_until_nsamples:
191 timestamps_end = [t + options.cut_until_nsamples for t in timestamps[1:]]
192 timestamps_end += [ 1e120 ]
193 if options.cut_until_nslices:
194 timestamps_end = [t for t in timestamps[1 + options.cut_until_nslices:]]
195 timestamps_end += [ 1e120 ] * (options.cut_until_nslices + 1)
196 slice_source_at_stamps(options.source_file,
197 timestamps, timestamps_end = timestamps_end,
198 output_dir = options.output_directory,
199 samplerate = options.samplerate)
202 parser = aubio_cut_parser()
203 options = parser.parse_args()
204 if not options.source_file and not options.source_file2:
205 sys.stderr.write("Error: no file name given\n")
208 elif options.source_file2 is not None:
209 options.source_file = options.source_file2
212 timestamps, total_frames = _cut_analyze(options)
215 duration = float (total_frames) / float(options.samplerate)
216 base_info = '%(source_file)s' % {'source_file': options.source_file}
217 base_info += ' (total %(duration).2fs at %(samplerate)dHz)\n' % \
218 {'duration': duration, 'samplerate': options.samplerate}
220 info = "found %d timestamps in " % len(timestamps)
222 sys.stderr.write(info)
225 _cut_slice(options, timestamps)
226 info = "created %d slices from " % len(timestamps)
228 sys.stderr.write(info)