#!/usr/bin/env python3
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#
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# Copyright (c) 2022 Xiaomi Corporation (authors: Fangjun Kuang)
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import pickle
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import kaldi_native_fbank as knf
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def test_default():
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opts = knf.FrameExtractionOptions()
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assert opts.samp_freq == 16000
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assert opts.frame_shift_ms == 10.0
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assert opts.frame_length_ms == 25.0
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assert opts.dither == 1.0
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assert abs(opts.preemph_coeff - 0.97) < 1e-6
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assert opts.remove_dc_offset is True
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assert opts.window_type == "povey"
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assert opts.round_to_power_of_two is True
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assert abs(opts.blackman_coeff - 0.42) < 1e-6
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assert opts.snip_edges is True
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def test_set_get():
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opts = knf.FrameExtractionOptions()
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opts.samp_freq = 44100
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assert opts.samp_freq == 44100
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opts.frame_shift_ms = 20.5
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assert opts.frame_shift_ms == 20.5
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opts.frame_length_ms = 1
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assert opts.frame_length_ms == 1
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opts.dither = 0.5
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assert opts.dither == 0.5
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opts.preemph_coeff = 0.25
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assert opts.preemph_coeff == 0.25
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opts.remove_dc_offset = False
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assert opts.remove_dc_offset is False
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opts.window_type = "hanning"
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assert opts.window_type == "hanning"
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opts.round_to_power_of_two = False
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assert opts.round_to_power_of_two is False
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opts.blackman_coeff = 0.25
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assert opts.blackman_coeff == 0.25
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opts.snip_edges = False
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assert opts.snip_edges is False
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def test_from_empty_dict():
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opts = knf.FrameExtractionOptions.from_dict({})
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opts2 = knf.FrameExtractionOptions()
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assert str(opts) == str(opts2)
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def test_from_dict_partial():
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d = {"samp_freq": 10, "frame_shift_ms": 2}
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opts = knf.FrameExtractionOptions.from_dict(d)
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opts2 = knf.FrameExtractionOptions()
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assert str(opts) != str(opts2)
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opts2.samp_freq = 10
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assert str(opts) != str(opts2)
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opts2.frame_shift_ms = 2
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assert str(opts) == str(opts2)
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opts2.frame_shift_ms = 3
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assert str(opts) != str(opts2)
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def test_from_dict_full_and_as_dict():
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opts = knf.FrameExtractionOptions()
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opts.samp_freq = 20
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opts.frame_length_ms = 100
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d = opts.as_dict()
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for key, value in d.items():
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assert value == getattr(opts, key)
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opts2 = knf.FrameExtractionOptions.from_dict(d)
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assert str(opts2) == str(opts)
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d["window_type"] = "hanning"
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opts3 = knf.FrameExtractionOptions.from_dict(d)
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assert opts3.window_type == "hanning"
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def test_pickle():
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opts = knf.FrameExtractionOptions()
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opts.samp_freq = 44100
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opts.dither = 5.5
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data = pickle.dumps(opts)
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opts2 = pickle.loads(data)
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assert str(opts) == str(opts2)
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def main():
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test_default()
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test_set_get()
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test_from_empty_dict()
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test_from_dict_partial()
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test_from_dict_full_and_as_dict()
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test_pickle()
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if __name__ == "__main__":
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main()
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