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BW3-Core/boswatch/inputSource/pulseaudioInput.py

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Added PulseAudio as Source
2020-06-29 21:11:07 +02:00
#!/usr/bin/python
# -*- coding: utf-8 -*-
Avoid "DeprecationWarning: invalid escape sequence" Without this change, many warnings like this will be generated while running pytest: ``` test/test_template.py:3 /build/source/test/test_template.py:3: DeprecationWarning: invalid escape sequence '\/' """! ``` This can also be seen when manually running python with warnings enabled. This happens because the comment uses a multiline string and Python interprets the backslash in the logo as an escape character and complains that \/ is not a valid escape sequence. To fix this, prepend the string with the letter r to indicate that the backslash should be treated as a literal character, see https://docs.python.org/3/reference/lexical_analysis.html#index-20. I also applied this change to all the comment strings since that shouldn't break anything and to establish it as a pattern for the future so this problem hopefully never happens again. This is what I did specifically: - Change the comment at the top of bw_client.py and bw_server.py to start with `"""!` since that seems to be the pattern here - Search-and-Replace all occurances of `"""!` with `r"""!` - Manually change the strings in `logoToLog()` in boswatch/utils/header.py
2023-09-19 16:13:23 +02:00
r"""!
Added PulseAudio as Source
2020-06-29 21:11:07 +02:00
____ ____ ______ __ __ __ _____
/ __ )/ __ \/ ___/ | / /___ _/ /______/ /_ |__ /
/ __ / / / /\__ \| | /| / / __ `/ __/ ___/ __ \ /_ <
/ /_/ / /_/ /___/ /| |/ |/ / /_/ / /_/ /__/ / / / ___/ /
/_____/\____//____/ |__/|__/\__,_/\__/\___/_/ /_/ /____/
German BOS Information Script
by Bastian Schroll
@file: pulseaudioInput.py
@date: 18.04.2020, 29.06.2020
@author: Philipp von Kirschbaum, b-watch
@description: Input source for PulseAudio
"""
import logging
from boswatch.utils import paths
from boswatch.processManager import ProcessManager
from boswatch.inputSource.inputBase import InputBase
logging.debug("- %s loaded", __name__)
class PulseAudioInput(InputBase):
Avoid "DeprecationWarning: invalid escape sequence" Without this change, many warnings like this will be generated while running pytest: ``` test/test_template.py:3 /build/source/test/test_template.py:3: DeprecationWarning: invalid escape sequence '\/' """! ``` This can also be seen when manually running python with warnings enabled. This happens because the comment uses a multiline string and Python interprets the backslash in the logo as an escape character and complains that \/ is not a valid escape sequence. To fix this, prepend the string with the letter r to indicate that the backslash should be treated as a literal character, see https://docs.python.org/3/reference/lexical_analysis.html#index-20. I also applied this change to all the comment strings since that shouldn't break anything and to establish it as a pattern for the future so this problem hopefully never happens again. This is what I did specifically: - Change the comment at the top of bw_client.py and bw_server.py to start with `"""!` since that seems to be the pattern here - Search-and-Replace all occurances of `"""!` with `r"""!` - Manually change the strings in `logoToLog()` in boswatch/utils/header.py
2023-09-19 16:13:23 +02:00
r"""!Class for the PulseAudio input source"""
Added PulseAudio as Source
2020-06-29 21:11:07 +02:00
def _runThread(self, dataQueue, PulseAudioConfig, decoderConfig):
PulseAudioProc = None
mmProc = None
try:
PulseAudioProc = ProcessManager("parec")
PulseAudioProc.addArgument("--channels=1") # supress any other outputs
PulseAudioProc.addArgument("--format=s16le") # set output format (16bit)
PulseAudioProc.addArgument("--rate=22050") # set output sampling rate (22050Hz)
PulseAudioProc.addArgument("--device=" +
str(PulseAudioConfig.get("device", default="boswatch")) +
".monitor") # sink name
PulseAudioProc.setStderr(open(paths.LOG_PATH + "pulseaudio.log", "a"))
PulseAudioProc.start()
rename startmm to getDecoderInstance
2020-07-08 20:33:58 +02:00
mmProc = self.getDecoderInstance(decoderConfig, PulseAudioProc.stdout)
Added PulseAudio as Source
2020-06-29 21:11:07 +02:00
mmProc.start()
logging.info("start decoding")
while self._isRunning:
if not PulseAudioProc.isRunning:
changed log output
2020-07-01 11:45:13 +02:00
logging.warning("PulseAudio was down - try to restart")
Added PulseAudio as Source
2020-06-29 21:11:07 +02:00
PulseAudioProc.start()
Remove Whitespace
2023-01-24 10:22:46 +01:00
Restart multimon on broken input
2022-10-19 13:40:19 +02:00
if PulseAudioProc.isRunning:
logging.info("rtl_fm is back up - restarting multimon...")
mmProc.setStdin(PulseAudioProc.stdout)
mmProc.start()
Added PulseAudio as Source
2020-06-29 21:11:07 +02:00
elif not mmProc.isRunning:
logging.warning("multimon was down - try to restart")
mmProc.start()
elif PulseAudioProc.isRunning and mmProc.isRunning:
line = mmProc.readline()
if line:
self.addToQueue(line)
except:
logging.exception("error in PulseAudio input routine")
finally:
mmProc.stop()
PulseAudioProc.stop()
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