source: python/scripts/aubiocut @ bc6c1a7

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since bc6c1a7 was a2ca72a, checked in by Paul Brossier <piem@piem.org>, 6 years ago

python/scripts/aubiocut: use input samplerate to write slices

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1#! /usr/bin/env python
2
3""" this file was written by Paul Brossier
4  it is released under the GNU/GPL license.
5"""
6
7import sys
8#from aubio.task import *
9
10usage = "usage: %s [options] -i soundfile" % sys.argv[0]
11usage += "\n help: %s -h" % sys.argv[0]
12
13def parse_args():
14    from optparse import OptionParser
15    parser = OptionParser(usage=usage)
16    parser.add_option("-i", "--input", action = "store", dest = "source_file",
17            help="input sound file to analyse", metavar = "<source_file>")
18    parser.add_option("-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")
23    # cutting methods
24    parser.add_option("-b","--beat",
25            action="store_true", dest="beat", default=False,
26            help="use beat locations")
27    """
28    parser.add_option("-S","--silencecut",
29            action="store_true", dest="silencecut", default=False,
30            help="use silence locations")
31    parser.add_option("-s","--silence",
32            metavar = "<value>",
33            action="store", dest="silence", default=-70,
34            help="silence threshold [default=-70]")
35            """
36    # algorithm parameters
37    parser.add_option("-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_option("-B","--bufsize",
42            action="store", dest="bufsize", default=512,
43            metavar = "<size>", type='int',
44            help="buffer size [default=512]")
45    parser.add_option("-H","--hopsize",
46            metavar = "<size>", type='int',
47            action="store", dest="hopsize", default=256,
48            help="overlap size [default=256]")
49    parser.add_option("-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_option("-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")
57    """
58    parser.add_option("-D","--delay",
59            action = "store", dest = "delay", type = "float",
60            metavar = "<seconds>", default=0,
61            help="number of seconds to take back [default=system]\
62                    default system delay is 3*hopsize/samplerate")
63    parser.add_option("-C","--dcthreshold",
64            metavar = "<value>",
65            action="store", dest="dcthreshold", default=1.,
66            help="onset peak picking DC component [default=1.]")
67    parser.add_option("-M","--mintol",
68            metavar = "<value>",
69            action="store", dest="mintol", default=0.048,
70            help="minimum inter onset interval [default=0.048]")
71    parser.add_option("-L","--localmin",
72            action="store_true", dest="localmin", default=False,
73            help="use local minima after peak detection")
74    parser.add_option("-d","--derivate",
75            action="store_true", dest="derivate", default=False,
76            help="derivate onset detection function")
77    parser.add_option("-z","--zerocross",
78            metavar = "<value>",
79            action="store", dest="zerothres", default=0.008,
80            help="zero-crossing threshold for slicing [default=0.00008]")
81            """
82    # plotting functions
83    """
84    parser.add_option("-p","--plot",
85            action="store_true", dest="plot", default=False,
86            help="draw plot")
87    parser.add_option("-x","--xsize",
88            metavar = "<size>",
89            action="store", dest="xsize", default=1.,
90            type='float', help="define xsize for plot")
91    parser.add_option("-y","--ysize",
92            metavar = "<size>",
93            action="store", dest="ysize", default=1.,
94            type='float', help="define ysize for plot")
95    parser.add_option("-f","--function",
96            action="store_true", dest="func", default=False,
97            help="print detection function")
98    parser.add_option("-n","--no-onsets",
99            action="store_true", dest="nplot", default=False,
100            help="do not plot detected onsets")
101    parser.add_option("-O","--outplot",
102            metavar = "<output_image>",
103            action="store", dest="outplot", default=None,
104            help="save plot to output.{ps,png}")
105    parser.add_option("-F","--spectrogram",
106            action="store_true", dest="spectro", default=False,
107            help="add spectrogram to the plot")
108    """
109    parser.add_option("-o","--output", type = str,
110            metavar = "<outputdir>",
111            action="store", dest="output_directory", default=None,
112            help="specify path where slices of the original file should be created")
113    parser.add_option("--cut-until-nsamples", type = int,
114            metavar = "<samples>",
115            action = "store", dest = "cut_until_nsamples", default = None,
116            help="how many extra samples should be added at the end of each slice")
117    parser.add_option("--cut-until-nslices", type = int,
118            metavar = "<slices>",
119            action = "store", dest = "cut_until_nslices", default = None,
120            help="how many extra slices should be added at the end of each slice")
121
122    parser.add_option("-v","--verbose",
123            action="store_true", dest="verbose", default=True,
124            help="make lots of noise [default]")
125    parser.add_option("-q","--quiet",
126            action="store_false", dest="verbose", default=True,
127            help="be quiet")
128    (options, args) = parser.parse_args()
129    if not options.source_file:
130        import os.path
131        if len(args) == 1:
132            options.source_file = args[0]
133        else:
134            print "no file name given\n", usage
135            sys.exit(1)
136    return options, args
137
138if __name__ == '__main__':
139    options, args = parse_args()
140
141    hopsize = options.hopsize
142    bufsize = options.bufsize
143    samplerate = options.samplerate
144    source_file = options.source_file
145
146    from aubio import onset, tempo, source, sink
147
148    s = source(source_file, samplerate, hopsize)
149    if samplerate == 0: samplerate = s.get_samplerate()
150
151    if options.beat:
152        o = tempo(options.onset_method, bufsize, hopsize)
153    else:
154        o = onset(options.onset_method, bufsize, hopsize)
155    o.set_threshold(options.threshold)
156
157    timestamps = []
158    total_frames = 0
159    # analyze pass
160    while True:
161        samples, read = s()
162        if o(samples):
163            timestamps.append (o.get_last())
164            if options.verbose: print "%.4f" % o.get_last_s()
165        total_frames += read
166        if read < hopsize: break
167    del s
168    # print some info
169    nstamps = len(timestamps)
170    duration = float (total_frames) / float(samplerate)
171    info = 'found %(nstamps)d timestamps in %(source_file)s' % locals()
172    info += ' (total %(duration).2fs at %(samplerate)dHz)\n' % locals()
173    sys.stderr.write(info)
174
175    # cutting pass
176    if options.cut and nstamps > 0:
177        # generate output files
178        from aubio.slicing import slice_source_at_stamps
179        timestamps_end = None
180        if options.cut_until_nslices and options.cut_until_nsamples:
181            print "warning: using cut_until_nslices, but cut_until_nsamples is set"
182        if options.cut_until_nsamples:
183            timestamps_end = [t + options.cut_until_nsamples for t in timestamps[1:]]
184            timestamps_end += [ 1e120 ]
185        if options.cut_until_nslices:
186            timestamps_end = [t for t in timestamps[1 + options.cut_until_nslices:]]
187            timestamps_end += [ 1e120 ] * (options.cut_until_nslices + 1)
188        slice_source_at_stamps(source_file, timestamps, timestamps_end = timestamps_end,
189                output_dir = options.output_directory,
190                samplerate = samplerate)
191
192        # print some info
193        duration = float (total_frames) / float(samplerate)
194        info = 'created %(nstamps)d slices from %(source_file)s' % locals()
195        info += ' (total %(duration).2fs at %(samplerate)dHz)\n' % locals()
196        sys.stderr.write(info)
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