source: python/lib/aubio/cmd.py @ 4bc10e2

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5
Last change on this file since 4bc10e2 was 4bc10e2, checked in by Paul Brossier <piem@piem.org>, 5 years ago

Merge branch 'master' into feature/earlynoteoff

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File size: 23.1 KB
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[1d2cc5e]1#! /usr/bin/env python
2# -*- coding: utf-8 -*-
3
4"""aubio command line tool
5
6This file was written by Paul Brossier <piem@aubio.org> and is released under
7the GNU/GPL v3.
8
9Note: this script is mostly about parsing command line arguments. For more
10readable code examples, check out the `python/demos` folder."""
11
12import sys
13import argparse
14import aubio
15
16def aubio_parser():
17    epilog = 'use "%(prog)s <command> --help" for more info about each command'
18    parser = argparse.ArgumentParser(epilog=epilog)
19    parser.add_argument('-V', '--version', help="show version",
20            action="store_true", dest="show_version")
21
[2615dd9]22    subparsers = parser.add_subparsers(title='commands', dest='command',
[c95062b]23            parser_class= AubioArgumentParser,
[2615dd9]24            metavar="")
[1d2cc5e]25
[8a3acad]26    parser_add_subcommand_help(subparsers)
27
[ee123a0]28    parser_add_subcommand_onset(subparsers)
29    parser_add_subcommand_pitch(subparsers)
30    parser_add_subcommand_beat(subparsers)
31    parser_add_subcommand_tempo(subparsers)
32    parser_add_subcommand_notes(subparsers)
33    parser_add_subcommand_mfcc(subparsers)
34    parser_add_subcommand_melbands(subparsers)
35    parser_add_subcommand_quiet(subparsers)
[8dd5d40]36    parser_add_subcommand_cut(subparsers)
[ee123a0]37
38    return parser
39
[8a3acad]40def parser_add_subcommand_help(subparsers):
41    # global help subcommand
42    subparsers.add_parser('help',
43            help='show help message',
44            formatter_class = argparse.ArgumentDefaultsHelpFormatter)
45
[ee123a0]46def parser_add_subcommand_onset(subparsers):
[1d2cc5e]47    # onset subcommand
48    subparser = subparsers.add_parser('onset',
[86026a0]49            help='estimate time of onsets (beginning of sound event)',
[1d2cc5e]50            formatter_class = argparse.ArgumentDefaultsHelpFormatter)
[c95062b]51    subparser.add_input()
52    subparser.add_buf_hop_size()
[1d2cc5e]53    helpstr = "onset novelty function"
54    helpstr += " <default|energy|hfc|complex|phase|specdiff|kl|mkl|specflux>"
[c95062b]55    subparser.add_method(helpstr=helpstr)
56    subparser.add_threshold()
57    subparser.add_silence()
58    subparser.add_minioi()
59    subparser.add_time_format()
60    subparser.add_verbose_help()
[1d2cc5e]61    subparser.set_defaults(process=process_onset)
62
[ee123a0]63def parser_add_subcommand_pitch(subparsers):
[1d2cc5e]64    # pitch subcommand
65    subparser = subparsers.add_parser('pitch',
[86026a0]66            help='estimate fundamental frequency (monophonic)')
[c95062b]67    subparser.add_input()
68    subparser.add_buf_hop_size(buf_size=2048)
[1d2cc5e]69    helpstr = "pitch detection method <default|yinfft|yin|mcomb|fcomb|schmitt>"
[c95062b]70    subparser.add_method(helpstr=helpstr)
71    subparser.add_threshold()
72    subparser.add_pitch_unit()
73    subparser.add_silence()
74    subparser.add_time_format()
75    subparser.add_verbose_help()
[1d2cc5e]76    subparser.set_defaults(process=process_pitch)
77
[ee123a0]78def parser_add_subcommand_beat(subparsers):
[86026a0]79    # beat subcommand
[1d2cc5e]80    subparser = subparsers.add_parser('beat',
[86026a0]81            help='estimate location of beats')
[c95062b]82    subparser.add_input()
83    subparser.add_buf_hop_size(buf_size=1024, hop_size=512)
84    subparser.add_time_format()
85    subparser.add_verbose_help()
[bd72039]86    subparser.set_defaults(process=process_beat)
87
[ee123a0]88def parser_add_subcommand_tempo(subparsers):
[bd72039]89    # tempo subcommand
90    subparser = subparsers.add_parser('tempo',
[86026a0]91            help='estimate overall tempo in bpm')
[c95062b]92    subparser.add_input()
93    subparser.add_buf_hop_size(buf_size=1024, hop_size=512)
94    subparser.add_time_format()
95    subparser.add_verbose_help()
[1d2cc5e]96    subparser.set_defaults(process=process_tempo)
97
[ee123a0]98def parser_add_subcommand_notes(subparsers):
[1d2cc5e]99    # notes subcommand
100    subparser = subparsers.add_parser('notes',
[86026a0]101            help='estimate midi-like notes (monophonic)')
[c95062b]102    subparser.add_input()
103    subparser.add_buf_hop_size()
[357f81e]104    subparser.add_silence()
105    subparser.add_release_drop()
[c95062b]106    subparser.add_time_format()
107    subparser.add_verbose_help()
[1d2cc5e]108    subparser.set_defaults(process=process_notes)
109
[ee123a0]110def parser_add_subcommand_mfcc(subparsers):
[1d2cc5e]111    # mfcc subcommand
112    subparser = subparsers.add_parser('mfcc',
[86026a0]113            help='extract Mel-Frequency Cepstrum Coefficients')
[c95062b]114    subparser.add_input()
115    subparser.add_buf_hop_size()
116    subparser.add_time_format()
117    subparser.add_verbose_help()
[1d2cc5e]118    subparser.set_defaults(process=process_mfcc)
119
[ee123a0]120def parser_add_subcommand_melbands(subparsers):
[1d2cc5e]121    # melbands subcommand
122    subparser = subparsers.add_parser('melbands',
[86026a0]123            help='extract energies in Mel-frequency bands')
[c95062b]124    subparser.add_input()
125    subparser.add_buf_hop_size()
126    subparser.add_time_format()
127    subparser.add_verbose_help()
[1d2cc5e]128    subparser.set_defaults(process=process_melbands)
129
[ee123a0]130def parser_add_subcommand_quiet(subparsers):
[896c3a8]131    # quiet subcommand
132    subparser = subparsers.add_parser('quiet',
[70762c5]133            help='extract timestamps of quiet and loud regions')
[c95062b]134    subparser.add_input()
135    subparser.add_hop_size()
136    subparser.add_silence()
137    subparser.add_time_format()
138    subparser.add_verbose_help()
[896c3a8]139    subparser.set_defaults(process=process_quiet)
140
[8dd5d40]141def parser_add_subcommand_cut(subparsers):
[917adb0]142    # cut subcommand
[8dd5d40]143    subparser = subparsers.add_parser('cut',
144            help='slice at timestamps')
145    subparser.add_input()
146    helpstr = "onset novelty function"
147    helpstr += " <default|energy|hfc|complex|phase|specdiff|kl|mkl|specflux>"
148    subparser.add_method(helpstr=helpstr)
149    subparser.add_buf_hop_size()
[930bfec]150    subparser.add_silence()
[8dd5d40]151    subparser.add_threshold(default=0.3)
152    subparser.add_minioi()
153    subparser.add_slicer_options()
[930bfec]154    subparser.add_time_format()
[8dd5d40]155    subparser.add_verbose_help()
156    subparser.set_defaults(process=process_cut)
157
[c95062b]158class AubioArgumentParser(argparse.ArgumentParser):
159
160    def add_input(self):
161        self.add_argument("source_uri", default=None, nargs='?',
162                help="input sound file to analyse", metavar = "<source_uri>")
163        self.add_argument("-i", "--input", dest = "source_uri2",
164                help="input sound file to analyse", metavar = "<source_uri>")
165        self.add_argument("-r", "--samplerate",
166                metavar = "<freq>", type=int,
167                action="store", dest="samplerate", default=0,
168                help="samplerate at which the file should be represented")
169
170    def add_verbose_help(self):
171        self.add_argument("-v","--verbose",
172                action="count", dest="verbose", default=1,
173                help="make lots of noise [default]")
174        self.add_argument("-q","--quiet",
175                action="store_const", dest="verbose", const=0,
176                help="be quiet")
177
178    def add_buf_hop_size(self, buf_size=512, hop_size=256):
179        self.add_buf_size(buf_size=buf_size)
180        self.add_hop_size(hop_size=hop_size)
181
182    def add_buf_size(self, buf_size=512):
183        self.add_argument("-B","--bufsize",
184                action="store", dest="buf_size", default=buf_size,
185                metavar = "<size>", type=int,
186                help="buffer size [default=%d]" % buf_size)
187
188    def add_hop_size(self, hop_size=256):
189        self.add_argument("-H","--hopsize",
190                metavar = "<size>", type=int,
191                action="store", dest="hop_size", default=hop_size,
192                help="overlap size [default=%d]" % hop_size)
193
194    def add_method(self, method='default', helpstr='method'):
195        self.add_argument("-m","--method",
196                metavar = "<method>", type=str,
197                action="store", dest="method", default=method,
198                help="%s [default=%s]" % (helpstr, method))
199
200    def add_threshold(self, default=None):
201        self.add_argument("-t","--threshold",
202                metavar = "<threshold>", type=float,
203                action="store", dest="threshold", default=default,
204                help="threshold [default=%s]" % default)
205
206    def add_silence(self):
207        self.add_argument("-s", "--silence",
208                metavar = "<value>", type=float,
209                action="store", dest="silence", default=-70,
210                help="silence threshold")
211
[357f81e]212    def add_release_drop(self):
213        self.add_argument("-d", "--release-drop",
214                metavar = "<value>", type=float,
215                action="store", dest="release_drop", default=10,
216                help="release drop threshold")
217
[c95062b]218    def add_minioi(self, default="12ms"):
219        self.add_argument("-M", "--minioi",
220                metavar = "<value>", type=str,
221                action="store", dest="minioi", default=default,
222                help="minimum Inter-Onset Interval [default=%s]" % default)
223
224    def add_pitch_unit(self, default="Hz"):
225        help_str = "frequency unit, should be one of Hz, midi, bin, cent"
226        help_str += " [default=%s]" % default
227        self.add_argument("-u", "--pitch-unit",
228                metavar = "<value>", type=str,
229                action="store", dest="pitch_unit", default=default,
230                help=help_str)
231
232    def add_time_format(self):
233        helpstr = "select time values output format (samples, ms, seconds)"
234        helpstr += " [default=seconds]"
235        self.add_argument("-T", "--time-format",
236                 metavar='format',
237                 dest="time_format",
238                 default=None,
239                 help=helpstr)
[1d2cc5e]240
[8dd5d40]241    def add_slicer_options(self):
242        self.add_argument("-o","--output", type = str,
243                metavar = "<outputdir>",
244                action="store", dest="output_directory", default=None,
245                help="specify path where slices of the original file should be created")
246        self.add_argument("--cut-until-nsamples", type = int,
247                metavar = "<samples>",
248                action = "store", dest = "cut_until_nsamples", default = None,
249                help="how many extra samples should be added at the end of each slice")
250        self.add_argument("--cut-every-nslices", type = int,
251                metavar = "<samples>",
252                action = "store", dest = "cut_every_nslices", default = None,
253                help="how many slices should be groupped together at each cut")
254        self.add_argument("--cut-until-nslices", type = int,
255                metavar = "<slices>",
256                action = "store", dest = "cut_until_nslices", default = None,
257                help="how many extra slices should be added at the end of each slice")
[e126e65]258        self.add_argument("--create-first",
259                action = "store_true", dest = "create_first", default = False,
260                help="always include first slice")
[8dd5d40]261
[1d2cc5e]262# some utilities
263
264def samples2seconds(n_frames, samplerate):
[53fbd58]265    return "%f\t" % (n_frames / float(samplerate))
[1d2cc5e]266
267def samples2milliseconds(n_frames, samplerate):
[53fbd58]268    return "%f\t" % (1000. * n_frames / float(samplerate))
[1d2cc5e]269
[70762c5]270def samples2samples(n_frames, _samplerate):
[1d2cc5e]271    return "%d\t" % n_frames
272
273def timefunc(mode):
274    if mode is None or mode == 'seconds' or mode == 's':
275        return samples2seconds
276    elif mode == 'ms' or mode == 'milliseconds':
277        return samples2milliseconds
278    elif mode == 'samples':
279        return samples2samples
280    else:
[c290245]281        raise ValueError("invalid time format '%s'" % mode)
[1d2cc5e]282
283# definition of processing classes
284
285class default_process(object):
286    def __init__(self, args):
287        if 'time_format' in args:
288            self.time2string = timefunc(args.time_format)
289        if args.verbose > 2 and hasattr(self, 'options'):
290            name = type(self).__name__.split('_')[1]
291            optstr = ' '.join(['running', name, 'with options', repr(self.options), '\n'])
292            sys.stderr.write(optstr)
[b24c909]293    def flush(self, frames_read, samplerate):
[af98cb8]294        # optionally called at the end of process
[5ab3c4e]295        pass
[1d2cc5e]296
[af98cb8]297    def parse_options(self, args, valid_opts):
298        # get any valid options found in a dictionnary of arguments
299        options = {k :v for k,v in vars(args).items() if k in valid_opts}
300        self.options = options
301
302    def remap_pvoc_options(self, options):
303        # FIXME: we need to remap buf_size to win_s, hop_size to hop_s
304        # adjust python/ext/py-phasevoc.c to understand buf_size/hop_size
305        if 'buf_size' in options:
306            options['win_s'] = options['buf_size']
307            del options['buf_size']
308        if 'hop_size' in options:
309            options['hop_s'] = options['hop_size']
310            del options['hop_size']
311        self.options = options
312
[1d2cc5e]313class process_onset(default_process):
314    valid_opts = ['method', 'hop_size', 'buf_size', 'samplerate']
315    def __init__(self, args):
[af98cb8]316        self.parse_options(args, self.valid_opts)
[1d2cc5e]317        self.onset = aubio.onset(**self.options)
318        if args.threshold is not None:
319            self.onset.set_threshold(args.threshold)
320        if args.minioi:
321            if args.minioi.endswith('ms'):
322                self.onset.set_minioi_ms(float(args.minioi[:-2]))
323            elif args.minioi.endswith('s'):
324                self.onset.set_minioi_s(float(args.minioi[:-1]))
325            else:
326                self.onset.set_minioi(int(args.minioi))
327        if args.silence:
328            self.onset.set_silence(args.silence)
329        super(process_onset, self).__init__(args)
330    def __call__(self, block):
331        return self.onset(block)
[70762c5]332    def repr_res(self, res, _frames_read, samplerate):
[1d2cc5e]333        if res[0] != 0:
[6288806]334            outstr = self.time2string(self.onset.get_last(), samplerate)
[1d2cc5e]335            sys.stdout.write(outstr + '\n')
336
337class process_pitch(default_process):
338    valid_opts = ['method', 'hop_size', 'buf_size', 'samplerate']
339    def __init__(self, args):
[af98cb8]340        self.parse_options(args, self.valid_opts)
[1d2cc5e]341        self.pitch = aubio.pitch(**self.options)
[3d9b41b]342        if args.pitch_unit is not None:
343            self.pitch.set_unit(args.pitch_unit)
[1d2cc5e]344        if args.threshold is not None:
345            self.pitch.set_tolerance(args.threshold)
346        if args.silence is not None:
347            self.pitch.set_silence(args.silence)
348        super(process_pitch, self).__init__(args)
349    def __call__(self, block):
350        return self.pitch(block)
[6288806]351    def repr_res(self, res, frames_read, samplerate):
352        fmt_out = self.time2string(frames_read, samplerate)
[1d2cc5e]353        sys.stdout.write(fmt_out + "%.6f\n" % res[0])
354
[bd72039]355class process_beat(default_process):
[1d2cc5e]356    valid_opts = ['method', 'hop_size', 'buf_size', 'samplerate']
357    def __init__(self, args):
[af98cb8]358        self.parse_options(args, self.valid_opts)
[1d2cc5e]359        self.tempo = aubio.tempo(**self.options)
[bd72039]360        super(process_beat, self).__init__(args)
[1d2cc5e]361    def __call__(self, block):
362        return self.tempo(block)
[70762c5]363    def repr_res(self, res, _frames_read, samplerate):
[1d2cc5e]364        if res[0] != 0:
[6288806]365            outstr = self.time2string(self.tempo.get_last(), samplerate)
[1d2cc5e]366            sys.stdout.write(outstr + '\n')
367
[bd72039]368class process_tempo(process_beat):
369    def __init__(self, args):
370        super(process_tempo, self).__init__(args)
371        self.beat_locations = []
[70762c5]372    def repr_res(self, res, _frames_read, samplerate):
[bd72039]373        if res[0] != 0:
374            self.beat_locations.append(self.tempo.get_last_s())
375    def flush(self, frames_read, samplerate):
376        import numpy as np
[62a94b7]377        if len(self.beat_locations) < 2:
378            outstr = "unknown bpm"
379        else:
380            bpms = 60./ np.diff(self.beat_locations)
381            median_bpm = np.mean(bpms)
382            if len(self.beat_locations) < 10:
383                outstr = "%.2f bpm (uncertain)" % median_bpm
384            else:
385                outstr = "%.2f bpm" % median_bpm
386        sys.stdout.write(outstr + '\n')
[bd72039]387
[1d2cc5e]388class process_notes(default_process):
389    valid_opts = ['method', 'hop_size', 'buf_size', 'samplerate']
390    def __init__(self, args):
[af98cb8]391        self.parse_options(args, self.valid_opts)
[1d2cc5e]392        self.notes = aubio.notes(**self.options)
[357f81e]393        if args.silence is not None:
394            self.notes.set_silence(args.silence)
395        if args.release_drop is not None:
396            self.notes.set_release_drop(args.release_drop)
[1d2cc5e]397        super(process_notes, self).__init__(args)
398    def __call__(self, block):
399        return self.notes(block)
[6288806]400    def repr_res(self, res, frames_read, samplerate):
[1d2cc5e]401        if res[2] != 0: # note off
[6288806]402            fmt_out = self.time2string(frames_read, samplerate)
[1d2cc5e]403            sys.stdout.write(fmt_out + '\n')
404        if res[0] != 0: # note on
405            lastmidi = res[0]
406            fmt_out = "%f\t" % lastmidi
[6288806]407            fmt_out += self.time2string(frames_read, samplerate)
[1d2cc5e]408            sys.stdout.write(fmt_out) # + '\t')
[5ab3c4e]409    def flush(self, frames_read, samplerate):
410        eof = self.time2string(frames_read, samplerate)
411        sys.stdout.write(eof + '\n')
[1d2cc5e]412
413class process_mfcc(default_process):
414    def __init__(self, args):
[af98cb8]415        valid_opts1 = ['hop_size', 'buf_size']
416        self.parse_options(args, valid_opts1)
417        self.remap_pvoc_options(self.options)
418        self.pv = aubio.pvoc(**self.options)
419
420        valid_opts2 = ['buf_size', 'n_filters', 'n_coeffs', 'samplerate']
421        self.parse_options(args, valid_opts2)
422        self.mfcc = aubio.mfcc(**self.options)
[1d2cc5e]423
[af98cb8]424        # remember all options
425        self.parse_options(args, list(set(valid_opts1 + valid_opts2)))
[1d2cc5e]426
427        super(process_mfcc, self).__init__(args)
428
429    def __call__(self, block):
430        fftgrain = self.pv(block)
431        return self.mfcc(fftgrain)
[6288806]432    def repr_res(self, res, frames_read, samplerate):
433        fmt_out = self.time2string(frames_read, samplerate)
[1d2cc5e]434        fmt_out += ' '.join(["% 9.7f" % f for f in res.tolist()])
435        sys.stdout.write(fmt_out + '\n')
436
437class process_melbands(default_process):
438    def __init__(self, args):
439        self.args = args
440        valid_opts = ['hop_size', 'buf_size']
[af98cb8]441        self.parse_options(args, valid_opts)
442        self.remap_pvoc_options(self.options)
443        self.pv = aubio.pvoc(**self.options)
[1d2cc5e]444
445        valid_opts = ['buf_size', 'n_filters']
[af98cb8]446        self.parse_options(args, valid_opts)
447        self.remap_pvoc_options(self.options)
448        self.filterbank = aubio.filterbank(**self.options)
[1d2cc5e]449        self.filterbank.set_mel_coeffs_slaney(args.samplerate)
450
451        super(process_melbands, self).__init__(args)
452    def __call__(self, block):
453        fftgrain = self.pv(block)
454        return self.filterbank(fftgrain)
[6288806]455    def repr_res(self, res, frames_read, samplerate):
456        fmt_out = self.time2string(frames_read, samplerate)
[1d2cc5e]457        fmt_out += ' '.join(["% 9.7f" % f for f in res.tolist()])
458        sys.stdout.write(fmt_out + '\n')
459
[896c3a8]460class process_quiet(default_process):
461    def __init__(self, args):
462        self.args = args
463        valid_opts = ['hop_size', 'silence']
464        self.parse_options(args, valid_opts)
465        self.wassilence = 1
466
467        if args.silence is not None:
468            self.silence = args.silence
469        super(process_quiet, self).__init__(args)
470
471    def __call__(self, block):
472        if aubio.silence_detection(block, self.silence) == 1:
[70762c5]473            if self.wassilence != 1:
474                self.wassilence = 1
475                return 2 # newly found silence
476            return 1 # silence again
[896c3a8]477        else:
[70762c5]478            if self.wassilence != 0:
479                self.wassilence = 0
480                return -1 # newly found noise
481            return 0 # noise again
[896c3a8]482
483    def repr_res(self, res, frames_read, samplerate):
484        fmt_out = None
[70762c5]485        if res == -1:
[896c3a8]486            fmt_out = "NOISY: "
[70762c5]487        if res == 2:
[896c3a8]488            fmt_out = "QUIET: "
489        if fmt_out is not None:
490            fmt_out += self.time2string(frames_read, samplerate)
491            sys.stdout.write(fmt_out + '\n')
492
[8dd5d40]493class process_cut(process_onset):
494    def __init__(self, args):
495        super(process_cut, self).__init__(args)
496        self.slices = []
497        self.options = args
498
499    def __call__(self, block):
500        ret = super(process_cut, self).__call__(block)
501        if ret: self.slices.append(self.onset.get_last())
502        return ret
503
504    def flush(self, frames_read, samplerate):
[930bfec]505        from aubio.cut import _cut_slice
[8dd5d40]506        _cut_slice(self.options, self.slices)
507        duration = float (frames_read) / float(samplerate)
508        base_info = '%(source_file)s' % {'source_file': self.options.source_uri}
509        base_info += ' (total %(duration).2fs at %(samplerate)dHz)\n' % \
510                {'duration': duration, 'samplerate': samplerate}
511        info = "created %d slices from " % len(self.slices)
512        info += base_info
513        sys.stderr.write(info)
514
[8e2f36a]515def main():
[1d2cc5e]516    parser = aubio_parser()
[f5921b9]517    if sys.version_info[0] != 3:
518        # on py2, create a dummy ArgumentParser to workaround the
519        # optional subcommand issue. See https://bugs.python.org/issue9253
520        # This ensures that:
521        #  - version string is shown when only '-V' is passed
522        #  - help is printed if  '-V' is passed with any other argument
523        #  - any other argument get forwarded to the real parser
524        parser_root = argparse.ArgumentParser(add_help=False)
525        parser_root.add_argument('-V', '--version', help="show version",
526                action="store_true", dest="show_version")
527        args, extras = parser_root.parse_known_args()
528        if args.show_version == False: # no -V, forward to parser
529            args = parser.parse_args(extras, namespace=args)
530        elif len(extras) != 0: # -V with other arguments, print help
531            parser.print_help()
532            sys.exit(1)
533    else: # in py3, we can simply use parser directly
534        args = parser.parse_args()
[2615dd9]535    if 'show_version' in args and args.show_version:
[1d2cc5e]536        sys.stdout.write('aubio version ' + aubio.version + '\n')
537        sys.exit(0)
[2615dd9]538    elif 'verbose' in args and args.verbose > 3:
539        sys.stderr.write('aubio version ' + aubio.version + '\n')
[8a3acad]540    if 'command' not in args or args.command is None or args.command in ['help']:
[2615dd9]541        # no command given, print help and return 1
[1d2cc5e]542        parser.print_help()
[8a3acad]543        if args.command and args.command in ['help']:
544            sys.exit(0)
545        else:
546            sys.exit(1)
[1d2cc5e]547    elif not args.source_uri and not args.source_uri2:
548        sys.stderr.write("Error: a source is required\n")
549        parser.print_help()
550        sys.exit(1)
551    elif args.source_uri2 is not None:
552        args.source_uri = args.source_uri2
553    try:
554        # open source_uri
555        with aubio.source(args.source_uri, hop_size=args.hop_size,
556                samplerate=args.samplerate) as a_source:
[af98cb8]557            # always update args.samplerate to native samplerate, in case
558            # source was opened with args.samplerate=0
[1d2cc5e]559            args.samplerate = a_source.samplerate
560            # create the processor for this subcommand
561            processor = args.process(args)
562            frames_read = 0
563            while True:
564                # read new block from source
565                block, read = a_source()
566                # execute processor on this block
567                res = processor(block)
568                # print results for this block
569                if args.verbose > 0:
[6288806]570                    processor.repr_res(res, frames_read, a_source.samplerate)
[1d2cc5e]571                # increment total number of frames read
572                frames_read += read
573                # exit loop at end of file
574                if read < a_source.hop_size: break
[5ab3c4e]575            # flush the processor if needed
576            processor.flush(frames_read, a_source.samplerate)
[1d2cc5e]577            if args.verbose > 1:
578                fmt_string = "read {:.2f}s"
579                fmt_string += " ({:d} samples in {:d} blocks of {:d})"
580                fmt_string += " from {:s} at {:d}Hz\n"
581                sys.stderr.write(fmt_string.format(
582                        frames_read/float(a_source.samplerate),
583                        frames_read,
584                        frames_read // a_source.hop_size + 1,
585                        a_source.hop_size,
586                        a_source.uri,
587                        a_source.samplerate))
[657a20a]588    except KeyboardInterrupt:
[1d2cc5e]589        sys.exit(1)
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