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import itertools
from parameterized import parameterized
from torchaudio.backend import sox_io_backend
from torchaudio_unittest.common_utils import get_wav_data, skipIfNoSox, TempDirMixin, TorchaudioTestCase
from .common import name_func
@skipIfNoSox
class SmokeTest(TempDirMixin, TorchaudioTestCase):
"""Run smoke test on various audio format
The purpose of this test suite is to verify that sox_io_backend functionalities do not exhibit
abnormal behaviors.
This test suite should be able to run without any additional tools (such as sox command),
however without such tools, the correctness of each function cannot be verified.
"""
def run_smoke_test(self, ext, sample_rate, num_channels, *, compression=None, dtype="float32"):
duration = 1
num_frames = sample_rate * duration
path = self.get_temp_path(f"test.{ext}")
original = get_wav_data(dtype, num_channels, normalize=False, num_frames=num_frames)
# 1. run save
sox_io_backend.save(path, original, sample_rate, compression=compression)
# 2. run info
info = sox_io_backend.info(path)
assert info.sample_rate == sample_rate
assert info.num_channels == num_channels
# 3. run load
loaded, sr = sox_io_backend.load(path, normalize=False)
assert sr == sample_rate
assert loaded.shape[0] == num_channels
@parameterized.expand(
list(
itertools.product(
["float32", "int32", "int16", "uint8"],
[8000, 16000],
[1, 2],
)
),
name_func=name_func,
)
def test_wav(self, dtype, sample_rate, num_channels):
"""Run smoke test on wav format"""
self.run_smoke_test("wav", sample_rate, num_channels, dtype=dtype)
@parameterized.expand(
list(
itertools.product(
[8000, 16000],
[1, 2],
[-4.2, -0.2, 0, 0.2, 96, 128, 160, 192, 224, 256, 320],
)
)
)
def test_mp3(self, sample_rate, num_channels, bit_rate):
"""Run smoke test on mp3 format"""
self.run_smoke_test("mp3", sample_rate, num_channels, compression=bit_rate)
@parameterized.expand(
list(
itertools.product(
[8000, 16000],
[1, 2],
[-1, 0, 1, 2, 3, 3.6, 5, 10],
)
)
)
def test_vorbis(self, sample_rate, num_channels, quality_level):
"""Run smoke test on vorbis format"""
self.run_smoke_test("vorbis", sample_rate, num_channels, compression=quality_level)
@parameterized.expand(
list(
itertools.product(
[8000, 16000],
[1, 2],
list(range(9)),
)
),
name_func=name_func,
)
def test_flac(self, sample_rate, num_channels, compression_level):
"""Run smoke test on flac format"""
self.run_smoke_test("flac", sample_rate, num_channels, compression=compression_level)
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