57 lines
1.3 KiB
Python
57 lines
1.3 KiB
Python
import sounddevice as sd
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from pprint import pformat
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DEFAULT = 0
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sd.default.channels = 2
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sd.default.dtype = "int16"
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sd.default.latency = "low"
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sd.default.samplerate = 48000
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class PCMStream:
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def __init__(self):
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self.stream = None
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def read(self, num_bytes):
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# frame is 4 bytes
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frames = int(num_bytes / 4)
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data = self.stream.read(frames)[0]
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# convert to pcm format
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return bytes(data)
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def change_device(self, num):
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if self.stream is not None:
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self.stream.stop()
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self.stream.close()
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self.stream = sd.RawInputStream(device=num)
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self.stream.start()
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class DeviceNotFoundError(Exception):
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def __init__(self):
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self.devices = sd.query_devices()
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self.host_apis = sd.query_hostapis()
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super().__init__("No Devices Found")
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def __str__(self):
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return (
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f"Devices \n"
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f"{self.devices} \n "
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f"Host APIs \n"
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f"{pformat(self.host_apis)}"
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)
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def query_devices():
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options = {
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device.get("name"): index
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for index, device in enumerate(sd.query_devices())
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if (device.get("max_input_channels") > 0 and device.get("hostapi") == DEFAULT)
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}
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if not options:
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raise DeviceNotFoundError()
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return options |