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