3 """ this file was written by Paul Brossier
4 it is released under the GNU/GPL license.
9 from aubio.cmd import AubioArgumentParser
10 from aubio.slicing import slice_source_at_stamps
13 def aubio_cut_parser():
14 parser = AubioArgumentParser()
16 parser.add_argument("-O", "--onset-method",
17 action="store", dest="onset_method", default='default',
18 metavar = "<onset_method>",
19 help="onset detection method [default=default] \
20 complexdomain|hfc|phase|specdiff|energy|kl|mkl")
22 parser.add_argument("-b", "--beat",
23 action="store_true", dest="beat", default=False,
24 help="slice at beat locations")
26 parser.add_argument("-S", "--silencecut",
27 action="store_true", dest="silencecut", default=False,
28 help="use silence locations")
29 parser.add_argument("-s", "--silence",
31 action="store", dest="silence", default=-70,
32 help="silence threshold [default=-70]")
34 # algorithm parameters
35 parser.add_buf_hop_size()
36 parser.add_argument("-t", "--threshold", "--onset-threshold",
37 metavar = "<threshold>", type=float,
38 action="store", dest="threshold", default=0.3,
39 help="onset peak picking threshold [default=0.3]")
40 parser.add_argument("-c", "--cut",
41 action="store_true", dest="cut", default=False,
42 help="cut input sound file at detected labels")
46 parser.add_argument("-D", "--delay",
47 action = "store", dest = "delay", type = float,
48 metavar = "<seconds>", default=0,
49 help="number of seconds to take back [default=system]\
50 default system delay is 3*hopsize/samplerate")
51 parser.add_argument("-C", "--dcthreshold",
53 action="store", dest="dcthreshold", default=1.,
54 help="onset peak picking DC component [default=1.]")
55 parser.add_argument("-L", "--localmin",
56 action="store_true", dest="localmin", default=False,
57 help="use local minima after peak detection")
58 parser.add_argument("-d", "--derivate",
59 action="store_true", dest="derivate", default=False,
60 help="derivate onset detection function")
61 parser.add_argument("-z", "--zerocross",
63 action="store", dest="zerothres", default=0.008,
64 help="zero-crossing threshold for slicing [default=0.00008]")
66 parser.add_argument("-p", "--plot",
67 action="store_true", dest="plot", default=False,
69 parser.add_argument("-x", "--xsize",
71 action="store", dest="xsize", default=1.,
72 type=float, help="define xsize for plot")
73 parser.add_argument("-y", "--ysize",
75 action="store", dest="ysize", default=1.,
76 type=float, help="define ysize for plot")
77 parser.add_argument("-f", "--function",
78 action="store_true", dest="func", default=False,
79 help="print detection function")
80 parser.add_argument("-n", "--no-onsets",
81 action="store_true", dest="nplot", default=False,
82 help="do not plot detected onsets")
83 parser.add_argument("-O", "--outplot",
84 metavar = "<output_image>",
85 action="store", dest="outplot", default=None,
86 help="save plot to output.{ps,png}")
87 parser.add_argument("-F", "--spectrogram",
88 action="store_true", dest="spectro", default=False,
89 help="add spectrogram to the plot")
91 parser.add_slicer_options()
92 parser.add_verbose_help()
96 def _cut_analyze(options):
97 hopsize = options.hop_size
98 bufsize = options.buf_size
99 samplerate = options.samplerate
100 source_uri = options.source_uri
103 from aubio import onset, tempo, source
105 s = source(source_uri, samplerate, hopsize)
107 samplerate = s.samplerate
108 options.samplerate = samplerate
111 o = tempo(options.onset_method, bufsize, hopsize,
112 samplerate=samplerate)
114 o = onset(options.onset_method, bufsize, hopsize,
115 samplerate=samplerate)
117 if options.minioi.endswith('ms'):
118 o.set_minioi_ms(int(options.minioi[:-2]))
119 elif options.minioi.endswith('s'):
120 o.set_minioi_s(int(options.minioi[:-1]))
122 o.set_minioi(int(options.minioi))
123 o.set_threshold(options.threshold)
130 timestamps.append(o.get_last())
132 print("%.4f" % o.get_last_s())
137 return timestamps, total_frames
140 def _cut_slice(options, timestamps):
142 nstamps = len(timestamps)
144 # generate output files
145 timestamps_end = None
146 if options.cut_every_nslices:
147 timestamps = timestamps[::options.cut_every_nslices]
148 nstamps = len(timestamps)
149 if options.cut_until_nslices and options.cut_until_nsamples:
150 msg = "using cut_until_nslices, but cut_until_nsamples is set"
152 if options.cut_until_nsamples:
153 lag = options.cut_until_nsamples
154 timestamps_end = [t + lag for t in timestamps[1:]]
155 timestamps_end += [1e120]
156 if options.cut_until_nslices:
157 slice_lag = options.cut_until_nslices
158 timestamps_end = [t for t in timestamps[1 + slice_lag:]]
159 timestamps_end += [1e120] * (options.cut_until_nslices + 1)
160 slice_source_at_stamps(options.source_uri,
161 timestamps, timestamps_end = timestamps_end,
162 output_dir = options.output_directory,
163 samplerate = options.samplerate,
164 create_first = options.create_first)
167 parser = aubio_cut_parser()
168 options = parser.parse_args()
169 if not options.source_uri and not options.source_uri2:
170 sys.stderr.write("Error: no file name given\n")
173 elif options.source_uri2 is not None:
174 options.source_uri = options.source_uri2
177 timestamps, total_frames = _cut_analyze(options)
180 duration = float(total_frames) / float(options.samplerate)
181 base_info = '%(source_uri)s' % {'source_uri': options.source_uri}
182 base_info += ' (total %(duration).2fs at %(samplerate)dHz)\n' % \
183 {'duration': duration, 'samplerate': options.samplerate}
185 info = "found %d timestamps in " % len(timestamps)
187 sys.stderr.write(info)
190 _cut_slice(options, timestamps)
191 info = "created %d slices from " % len(timestamps)
193 sys.stderr.write(info)