def _cut_slice(options, timestamps):
# cutting pass
nstamps = len(timestamps)
if nstamps > 0:
# generate output files
timestamps_end = None
if options.cut_every_nslices:
timestamps = timestamps[::options.cut_every_nslices]
nstamps = len(timestamps)
if options.cut_until_nslices and options.cut_until_nsamples:
msg = "using cut_until_nslices, but cut_until_nsamples is set"
warnings.warn(msg)
if options.cut_until_nsamples:
lag = options.cut_until_nsamples
timestamps_end = [t + lag for t in timestamps[1:]]
timestamps_end += [1e120]
if options.cut_until_nslices:
slice_lag = options.cut_until_nslices
timestamps_end = [t for t in timestamps[1 + slice_lag:]]
timestamps_end += [1e120] * (options.cut_until_nslices + 1)
aubio.slice_source_at_stamps(options.source_uri,
timestamps, timestamps_end = timestamps_end,
output_dir = options.output_directory,
samplerate = options.samplerate,
create_first = options.create_first)
def test_slice_start_every_blocksize(self):
hopsize = 200
regions_start = [i * hopsize for i in range(1, n_slices)]
slice_source_at_stamps(self.source_file,
regions_start,
output_dir=self.output_dir,
hopsize=200)
def _cut_slice(options, timestamps):
# cutting pass
nstamps = len(timestamps)
if nstamps > 0:
# generate output files
timestamps_end = None
if options.cut_every_nslices:
timestamps = timestamps[::options.cut_every_nslices]
nstamps = len(timestamps)
if options.cut_until_nslices and options.cut_until_nsamples:
msg = "using cut_until_nslices, but cut_until_nsamples is set"
warnings.warn(msg)
if options.cut_until_nsamples:
lag = options.cut_until_nsamples
timestamps_end = [t + lag for t in timestamps[1:]]
timestamps_end += [1e120]
if options.cut_until_nslices:
slice_lag = options.cut_until_nslices
timestamps_end = [t for t in timestamps[1 + slice_lag:]]
timestamps_end += [1e120] * (options.cut_until_nslices + 1)
aubio.slice_source_at_stamps(options.source_uri,
timestamps,
timestamps_end=timestamps_end,
output_dir=options.output_directory,
samplerate=options.samplerate,
create_first=options.create_first)
def test_slice_start_beyond_end(self):
regions_start = [i * 1000 for i in range(1, n_slices)]
regions_start += [count_samples_in_file(self.source_file) + 1000]
slice_source_at_stamps(self.source_file,
regions_start,
output_dir=self.output_dir,
create_first=True)
def test_slice_start_and_ends_overlaping(self):
regions_start = [i*1000 for i in range(n_slices)]
regions_ends = [start + 1199 for start in regions_start]
slice_source_at_stamps(self.source_file, regions_start, regions_ends,
output_dir = self.output_dir)
expected_samples = 1200 * n_slices
written_samples = count_samples_in_directory(self.output_dir)
total_files = count_files_in_directory(self.output_dir)
assert_equal(n_slices, total_files,
"number of slices created different from expected")
assert_equal(written_samples, expected_samples,
"number of samples written different from number of original samples")
def test_slice_start_and_ends_no_gap(self):
regions_start = [i*1000 for i in range(n_slices)]
regions_ends = [start - 1 for start in regions_start[1:]] + [1e120]
slice_source_at_stamps(self.source_file, regions_start, regions_ends,
output_dir = self.output_dir)
original_samples = count_samples_in_file(self.source_file)
written_samples = count_samples_in_directory(self.output_dir)
total_files = count_files_in_directory(self.output_dir)
assert_equal(n_slices, total_files,
"number of slices created different from expected")
assert_equal(written_samples, original_samples,
"number of samples written different from number of original samples")
def test_slice_no_ends(self):
regions_start = [i*1000 for i in range(1, n_slices)]
regions_end = None
slice_source_at_stamps (self.source_file, regions_start, regions_end,
output_dir = self.output_dir)
total_files = count_files_in_directory(self.output_dir)
assert_equal(n_slices, total_files,
"number of slices created different from expected")
original_samples = count_samples_in_file(self.source_file)
written_samples = count_samples_in_directory(self.output_dir)
assert_equal(written_samples, original_samples,
"number of samples written different from number of original samples")
def test_slice_start_only_no_zero(self):
regions_start = [i * 1000 for i in range(1, n_slices)]
slice_source_at_stamps(self.source_file,
regions_start,
output_dir=self.output_dir)
def test_slice_start_every_blocksize(self):
hopsize = 200
regions_start = [i*hopsize for i in range(1, n_slices)]
slice_source_at_stamps(self.source_file, regions_start, output_dir = self.output_dir,
hopsize = 200)
def test_slice_start_beyond_end(self):
regions_start = [i*1000 for i in range(1, n_slices)]
regions_start += [count_samples_in_file(self.source_file) + 1000]
slice_source_at_stamps(self.source_file, regions_start, output_dir = self.output_dir)
def test_slice_start_only_no_zero(self):
regions_start = [i*1000 for i in range(1, n_slices)]
slice_source_at_stamps(self.source_file, regions_start, output_dir = self.output_dir)