source: python/lib/aubio/cut.py @ adf09b2

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5
Last change on this file since adf09b2 was adf09b2, checked in by Paul Brossier <piem@piem.org>, 5 years ago

[py] [cut] use source.samplerate

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[9582713]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
[c81c3d2]8from aubio.cmd import AubioArgumentParser
[9582713]9
[b02d52f]10def aubio_cut_parser():
[c81c3d2]11    parser = AubioArgumentParser()
12    parser.add_input()
[a5004903]13    parser.add_argument("-O","--onset-method",
[9582713]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")
18    # cutting methods
[a5004903]19    parser.add_argument("-b","--beat",
[9582713]20            action="store_true", dest="beat", default=False,
[c81c3d2]21            help="slice at beat locations")
[7fc5ba2]22    """
[a5004903]23    parser.add_argument("-S","--silencecut",
[9582713]24            action="store_true", dest="silencecut", default=False,
25            help="use silence locations")
[a5004903]26    parser.add_argument("-s","--silence",
[9582713]27            metavar = "<value>",
28            action="store", dest="silence", default=-70,
29            help="silence threshold [default=-70]")
30            """
31    # algorithm parameters
[c81c3d2]32    parser.add_buf_hop_size()
33    parser.add_argument("-t","--threshold", "--onset-threshold",
34            metavar = "<threshold>", type=float,
[9582713]35            action="store", dest="threshold", default=0.3,
36            help="onset peak picking threshold [default=0.3]")
[a5004903]37    parser.add_argument("-c","--cut",
[9582713]38            action="store_true", dest="cut", default=False,
[c81c3d2]39            help="cut input sound file at detected labels")
40    parser.add_minioi()
[4c0a1db]41
[9582713]42    """
[a5004903]43    parser.add_argument("-D","--delay",
44            action = "store", dest = "delay", type = float,
[9582713]45            metavar = "<seconds>", default=0,
46            help="number of seconds to take back [default=system]\
47                    default system delay is 3*hopsize/samplerate")
[a5004903]48    parser.add_argument("-C","--dcthreshold",
[9582713]49            metavar = "<value>",
50            action="store", dest="dcthreshold", default=1.,
51            help="onset peak picking DC component [default=1.]")
[a5004903]52    parser.add_argument("-L","--localmin",
[9582713]53            action="store_true", dest="localmin", default=False,
54            help="use local minima after peak detection")
[a5004903]55    parser.add_argument("-d","--derivate",
[9582713]56            action="store_true", dest="derivate", default=False,
57            help="derivate onset detection function")
[a5004903]58    parser.add_argument("-z","--zerocross",
[9582713]59            metavar = "<value>",
60            action="store", dest="zerothres", default=0.008,
61            help="zero-crossing threshold for slicing [default=0.00008]")
62    # plotting functions
[a5004903]63    parser.add_argument("-p","--plot",
[9582713]64            action="store_true", dest="plot", default=False,
65            help="draw plot")
[a5004903]66    parser.add_argument("-x","--xsize",
[9582713]67            metavar = "<size>",
68            action="store", dest="xsize", default=1.,
[a5004903]69            type=float, help="define xsize for plot")
70    parser.add_argument("-y","--ysize",
[9582713]71            metavar = "<size>",
72            action="store", dest="ysize", default=1.,
[a5004903]73            type=float, help="define ysize for plot")
74    parser.add_argument("-f","--function",
[9582713]75            action="store_true", dest="func", default=False,
76            help="print detection function")
[a5004903]77    parser.add_argument("-n","--no-onsets",
[9582713]78            action="store_true", dest="nplot", default=False,
79            help="do not plot detected onsets")
[a5004903]80    parser.add_argument("-O","--outplot",
[9582713]81            metavar = "<output_image>",
82            action="store", dest="outplot", default=None,
83            help="save plot to output.{ps,png}")
[a5004903]84    parser.add_argument("-F","--spectrogram",
[9582713]85            action="store_true", dest="spectro", default=False,
86            help="add spectrogram to the plot")
87    """
[c81c3d2]88    parser.add_slicer_options()
89    parser.add_verbose_help()
[b02d52f]90    return parser
[9582713]91
92
[b02d52f]93def _cut_analyze(options):
[c81c3d2]94    hopsize = options.hop_size
95    bufsize = options.buf_size
[9582713]96    samplerate = options.samplerate
[c81c3d2]97    source_uri = options.source_uri
[9582713]98
[b02d52f]99    # analyze pass
[4077fa1]100    from aubio import onset, tempo, source
[9582713]101
[c81c3d2]102    s = source(source_uri, samplerate, hopsize)
[b02d52f]103    if samplerate == 0:
[adf09b2]104        samplerate = s.samplerate
[b02d52f]105        options.samplerate = samplerate
[9582713]106
[7fc5ba2]107    if options.beat:
[2bf530e0]108        o = tempo(options.onset_method, bufsize, hopsize, samplerate=samplerate)
[7fc5ba2]109    else:
[2bf530e0]110        o = onset(options.onset_method, bufsize, hopsize, samplerate=samplerate)
[4c0a1db]111        if options.minioi:
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]))
116            else:
117                o.set_minioi(int(options.minioi))
[9582713]118    o.set_threshold(options.threshold)
119
120    timestamps = []
[dee4164]121    total_frames = 0
[9582713]122    while True:
123        samples, read = s()
[dee4164]124        if o(samples):
[7fc5ba2]125            timestamps.append (o.get_last())
[1c6fe64]126            if options.verbose: print ("%.4f" % o.get_last_s())
[dee4164]127        total_frames += read
[9582713]128        if read < hopsize: break
[7fc5ba2]129    del s
[b02d52f]130    return timestamps, total_frames
[dee4164]131
[b02d52f]132def _cut_slice(options, timestamps):
[dee4164]133    # cutting pass
[b02d52f]134    nstamps = len(timestamps)
135    if nstamps > 0:
[94b16e89]136        # generate output files
[bc24e9c]137        from aubio.slicing import slice_source_at_stamps
[94b16e89]138        timestamps_end = None
[e79acd9]139        if options.cut_every_nslices:
140            timestamps = timestamps[::options.cut_every_nslices]
141            nstamps = len(timestamps)
[94b16e89]142        if options.cut_until_nslices and options.cut_until_nsamples:
[1c6fe64]143            print ("warning: using cut_until_nslices, but cut_until_nsamples is set")
[94b16e89]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)
[c81c3d2]150        slice_source_at_stamps(options.source_uri,
[b02d52f]151                timestamps, timestamps_end = timestamps_end,
[a2ca72a]152                output_dir = options.output_directory,
[e126e65]153                samplerate = options.samplerate,
154                create_first = options.create_first)
[b02d52f]155
156def main():
157    parser = aubio_cut_parser()
158    options = parser.parse_args()
[c81c3d2]159    if not options.source_uri and not options.source_uri2:
[b02d52f]160        sys.stderr.write("Error: no file name given\n")
161        parser.print_help()
162        sys.exit(1)
[c81c3d2]163    elif options.source_uri2 is not None:
164        options.source_uri = options.source_uri2
[b02d52f]165
166    # analysis
167    timestamps, total_frames = _cut_analyze(options)
168
169    # print some info
170    duration = float (total_frames) / float(options.samplerate)
[c81c3d2]171    base_info = '%(source_uri)s' % {'source_uri': options.source_uri}
[b02d52f]172    base_info += ' (total %(duration).2fs at %(samplerate)dHz)\n' % \
173            {'duration': duration, 'samplerate': options.samplerate}
174
175    info = "found %d timestamps in " % len(timestamps)
176    info += base_info
177    sys.stderr.write(info)
[dee4164]178
[b02d52f]179    if options.cut:
180        _cut_slice(options, timestamps)
181        info = "created %d slices from " % len(timestamps)
182        info += base_info
[dee4164]183        sys.stderr.write(info)
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