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35 lines
1.2 KiB
Python
35 lines
1.2 KiB
Python
from itertools import chain
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import struct
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from typing import List
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import unittest
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from turntable.models import PCM
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from turntable.turntable import PCMRecognizer
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class TestPCMRecognizer(unittest.TestCase):
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def channel_data_to_pcm(self, channels: List[List[int]]) -> PCM:
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def interleave(xs: List[List[int]]) -> List[int]:
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return list(chain(*zip(*xs)))
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interleaved = interleave(channels)
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raw = struct.pack("{}h".format(len(interleaved)), *interleaved)
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return PCM(framerate=48000, channels=len(channels), data=raw)
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def test_convert_monaural_audio(self):
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channels = [[1] * 10]
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pcm = self.channel_data_to_pcm(channels)
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converted = PCMRecognizer.pcm_to_channel_data(pcm)
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self.assertEqual(channels, converted)
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def test_convert_stereo_audio(self):
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channels = [[1] * 10, [2] * 10]
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pcm = self.channel_data_to_pcm(channels)
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converted = PCMRecognizer.pcm_to_channel_data(pcm)
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self.assertEqual(channels, converted)
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def test_convert_10_channel_audio(self):
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channels = [[i] * 10 for i in range(10)]
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pcm = self.channel_data_to_pcm(channels)
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converted = PCMRecognizer.pcm_to_channel_data(pcm)
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self.assertEqual(channels, converted)
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