python/scripts/aubiocut

   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
   7 import sys
   8 #from aubio.task import *
   9
  10 usage = "usage: %s [options] -i soundfile" % sys.argv[0]
  11 usage += "\n help: %s -h" % sys.argv[0]
  12
  13 def 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     # minioi
  59     parser.add_option("-M","--minioi",
  60             metavar = "<value>", type='string',
  61             action="store", dest="minioi", default="12ms",
  62             help="minimum inter onset interval [default=12ms]")
  63
  64     """
  65     parser.add_option("-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_option("-C","--dcthreshold",
  71             metavar = "<value>",
  72             action="store", dest="dcthreshold", default=1.,
  73             help="onset peak picking DC component [default=1.]")
  74     parser.add_option("-L","--localmin",
  75             action="store_true", dest="localmin", default=False,
  76             help="use local minima after peak detection")
  77     parser.add_option("-d","--derivate",
  78             action="store_true", dest="derivate", default=False,
  79             help="derivate onset detection function")
  80     parser.add_option("-z","--zerocross",
  81             metavar = "<value>",
  82             action="store", dest="zerothres", default=0.008,
  83             help="zero-crossing threshold for slicing [default=0.00008]")
  84             """
  85     # plotting functions
  86     """
  87     parser.add_option("-p","--plot",
  88             action="store_true", dest="plot", default=False,
  89             help="draw plot")
  90     parser.add_option("-x","--xsize",
  91             metavar = "<size>",
  92             action="store", dest="xsize", default=1.,
  93             type='float', help="define xsize for plot")
  94     parser.add_option("-y","--ysize",
  95             metavar = "<size>",
  96             action="store", dest="ysize", default=1.,
  97             type='float', help="define ysize for plot")
  98     parser.add_option("-f","--function",
  99             action="store_true", dest="func", default=False,
 100             help="print detection function")
 101     parser.add_option("-n","--no-onsets",
 102             action="store_true", dest="nplot", default=False,
 103             help="do not plot detected onsets")
 104     parser.add_option("-O","--outplot",
 105             metavar = "<output_image>",
 106             action="store", dest="outplot", default=None,
 107             help="save plot to output.{ps,png}")
 108     parser.add_option("-F","--spectrogram",
 109             action="store_true", dest="spectro", default=False,
 110             help="add spectrogram to the plot")
 111     """
 112     parser.add_option("-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_option("--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_option("--cut-until-nslices", type = int,
 121             metavar = "<slices>",
 122             action = "store", dest = "cut_until_nslices", default = None,
 123             help="how many extra slices should be added at the end of each slice")
 124
 125     parser.add_option("-v","--verbose",
 126             action="store_true", dest="verbose", default=True,
 127             help="make lots of noise [default]")
 128     parser.add_option("-q","--quiet",
 129             action="store_false", dest="verbose", default=True,
 130             help="be quiet")
 131     (options, args) = parser.parse_args()
 132     if not options.source_file:
 133         import os.path
 134         if len(args) == 1:
 135             options.source_file = args[0]
 136         else:
 137             print ("no file name given\n", usage)
 138             sys.exit(1)
 139     return options, args
 140
 141 if __name__ == '__main__':
 142     options, args = parse_args()
 143
 144     hopsize = options.hopsize
 145     bufsize = options.bufsize
 146     samplerate = options.samplerate
 147     source_file = options.source_file
 148
 149     from aubio import onset, tempo, source, sink
 150
 151     s = source(source_file, samplerate, hopsize)
 152     if samplerate == 0: samplerate = s.get_samplerate()
 153
 154     if options.beat:
 155         o = tempo(options.onset_method, bufsize, hopsize)
 156     else:
 157         o = onset(options.onset_method, bufsize, hopsize)
 158         if options.minioi:
 159             if options.minioi.endswith('ms'):
 160                 o.set_minioi_ms(int(options.minioi[:-2]))
 161             elif options.minioi.endswith('s'):
 162                 o.set_minioi_s(int(options.minioi[:-1]))
 163             else:
 164                 o.set_minioi(int(options.minioi))
 165     o.set_threshold(options.threshold)
 166
 167     timestamps = []
 168     total_frames = 0
 169     # analyze pass
 170     while True:
 171         samples, read = s()
 172         if o(samples):
 173             timestamps.append (o.get_last())
 174             if options.verbose: print ("%.4f" % o.get_last_s())
 175         total_frames += read
 176         if read < hopsize: break
 177     del s
 178     # print some info
 179     nstamps = len(timestamps)
 180     duration = float (total_frames) / float(samplerate)
 181     info = 'found %(nstamps)d timestamps in %(source_file)s' % locals()
 182     info += ' (total %(duration).2fs at %(samplerate)dHz)\n' % locals()
 183     sys.stderr.write(info)
 184
 185     # cutting pass
 186     if options.cut and nstamps > 0:
 187         # generate output files
 188         from aubio.slicing import slice_source_at_stamps
 189         timestamps_end = None
 190         if options.cut_until_nslices and options.cut_until_nsamples:
 191             print ("warning: using cut_until_nslices, but cut_until_nsamples is set")
 192         if options.cut_until_nsamples:
 193             timestamps_end = [t + options.cut_until_nsamples for t in timestamps[1:]]
 194             timestamps_end += [ 1e120 ]
 195         if options.cut_until_nslices:
 196             timestamps_end = [t for t in timestamps[1 + options.cut_until_nslices:]]
 197             timestamps_end += [ 1e120 ] * (options.cut_until_nslices + 1)
 198         slice_source_at_stamps(source_file, timestamps, timestamps_end = timestamps_end,
 199                 output_dir = options.output_directory,
 200                 samplerate = samplerate)
 201
 202         # print some info
 203         duration = float (total_frames) / float(samplerate)
 204         info = 'created %(nstamps)d slices from %(source_file)s' % locals()
 205         info += ' (total %(duration).2fs at %(samplerate)dHz)\n' % locals()
 206         sys.stderr.write(info)