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     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
 138 if __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
 191         # print some info
 192         duration = float (total_frames) / float(samplerate)
 193         info = 'created %(nstamps)d slices from %(source_file)s' % locals()
 194         info += ' (total %(duration).2fs at %(samplerate)dHz)\n' % locals()
 195         sys.stderr.write(info)