def find_a_device_index(filt='microphone', dflt=None):
if isinstance(filt, str):
match_str = filt
def filt(x):
return match_str in x.get('name', match_str).lower()
match = next(filter(filt, PyAudioSourceReader.list_device_info()), None)
return (match is not None and match['index']) or dflt
def ensure_source_input_device_index(input_device_index=None):
if input_device_index is None:
input_device_index = find_a_default_input_device_index()
if input_device_index is not None:
if isinstance(input_device_index, int):
return input_device_index
elif isinstance(input_device_index, str):
input_name = input_device_index
for index, name in list_recording_device_index_names():
if name == input_name:
return index
raise ValueError(
f"name not found in list of recording devices: {input_name}")
elif isinstance(input_device_index,
tuple) and len(input_device_index) == 2:
index, name = input_device_index
assert isinstance(
index, int
), f"expecting first element of tuple to be an int: {input_device_index}"
assert isinstance(
name, str
), f"expecting second element of tuple to be a string: {input_device_index}"
return index
else:
raise ValueError(
f"couldn't resolve input_device_index: {input_device_index}")
else:
# TODO: Nicer way to print info (perhaps only relevant info, formated as table)
print(
"Need a valid input_device_index. Calling live_audio_chks.list_device_info() to information about the "
"devices I can detect:\n")
for item in PyAudioSourceReader.list_device_info():
print(item)
print("")
print(
"---> Look in the list above and choose an input_device_index (it's called index in the printout above) "
"that seems to be right for you!")
raise ValueError("Need a valid input_device_index")
unsigned=True,
input_device_index=input_device_index,
frames_per_buffer=frames_per_buffer)
with StreamBuffer(source_reader=source_reader,
maxlen=maxlen) as stream_buffer:
"""keep open and save to file until stop event"""
buffer_reader = stream_buffer.mk_reader()
with PyAudioSaver(buffer_reader,
interval=interval,
rootdir=rootdir,
logging_enabled=logging_enabled) as pasave:
try:
pasave.join()
except KeyboardInterrupt:
pass
audio_to_files.list_device_info = lambda: PyAudioSourceReader.list_device_info(
)
if __name__ == "__main__":
audio_to_files(rate=44100,
width=2,
channels=1,
input_device_index=6,
frames_per_buffer=1024 * 4,
interval=1,
rootdir="~/odir/stream2py",
logging_enabled=True)
def list_recording_device_index_names():
"""List (index, name) of available recording devices"""
return sorted((d['index'], d['name'])
for d in PyAudioSourceReader.list_device_info()
if d['maxInputChannels'] > 0)
def device_info_by_index(index):
try:
return next(d for d in PyAudioSourceReader.list_device_info()
if d['index'] == index)
except StopIteration:
raise ValueError(f"Not found for input device index: {index}")