FreeDATA/tnc/audio.py
dj2ls 459e39daea updated socket commands and changed rx buffer behavior
..and some other changes to the gui so its compatible again with the latest socket commands. The rx buffer has now a unique id, and new structure. Also all messages and files will be saved to the same buffer. All commands which will be sent to the tnc or dameon are now written in lowercase
2022-01-28 20:07:39 +01:00

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2.2 KiB
Python

import json
####################################################
# https://stackoverflow.com/questions/7088672/pyaudio-working-but-spits-out-error-messages-each-time
# https://github.com/DJ2LS/FreeDATA/issues/22
# we need to have a look at this if we want to run this on Windows and MacOS !
# Currently it seems, this is a Linux-only problem
from ctypes import *
from contextlib import contextmanager
import pyaudio
ERROR_HANDLER_FUNC = CFUNCTYPE(None, c_char_p, c_int, c_char_p, c_int, c_char_p)
def py_error_handler(filename, line, function, err, fmt):
pass
c_error_handler = ERROR_HANDLER_FUNC(py_error_handler)
@contextmanager
def noalsaerr():
asound = cdll.LoadLibrary('libasound.so')
asound.snd_lib_error_set_handler(c_error_handler)
yield
asound.snd_lib_error_set_handler(None)
# with noalsaerr():
# p = pyaudio.PyAudio()
######################################################
def get_input_devices():
# UPDATE LIST OF AUDIO DEVICES
try:
# we need to "try" this, because sometimes libasound.so isn't in the default place
# try to supress error messages
with noalsaerr(): # https://github.com/DJ2LS/FreeDATA/issues/22
p = pyaudio.PyAudio()
# else do it the default way
except Exception as e:
p = pyaudio.PyAudio()
input_devices = []
output_devices = []
for i in range(0, p.get_device_count()):
# we need to do a try exception, beacuse for windows theres now audio device range
try:
maxInputChannels = p.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')
maxOutputChannels = p.get_device_info_by_host_api_device_index(0, i).get('maxOutputChannels')
name = p.get_device_info_by_host_api_device_index(0, i).get('name')
except:
maxInputChannels = 0
maxOutputChannels = 0
name = ''
if maxInputChannels > 0:
input_devices.append({"id": i, "name": str(name)})
if maxOutputChannels > 0:
output_devices.append({"id": i, "name": str(name)})
p.terminate()
return [input_devices, output_devices]
def get_output_devices():
pass