mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
602 lines
22 KiB
Python
602 lines
22 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Created on Wed Dec 23 07:04:24 2020
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@author: DJ2LS
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"""
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# pylint: disable=invalid-name, line-too-long, c-extension-no-member
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# pylint: disable=import-outside-toplevel
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import atexit
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import ctypes
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import queue
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import threading
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import time
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import codec2
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import numpy as np
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import sounddevice as sd
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import structlog
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import tci
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import cw
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from queues import RIGCTLD_COMMAND_QUEUE
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import audio
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import event_manager
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import beacon
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import demodulator
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TESTMODE = False
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class RF:
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"""Class to encapsulate interactions between the audio device and codec2"""
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log = structlog.get_logger("RF")
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def __init__(self, config, event_queue, fft_queue, service_queue, states) -> None:
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self.config = config
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print(config)
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self.service_queue = service_queue
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self.states = states
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self.sampler_avg = 0
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self.buffer_avg = 0
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# these are crc ids now
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self.audio_input_device = config['AUDIO']['input_device']
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self.audio_output_device = config['AUDIO']['output_device']
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self.tx_audio_level = config['AUDIO']['tx_audio_level']
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self.enable_audio_auto_tune = config['AUDIO']['enable_auto_tune']
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self.tx_delay = config['MODEM']['tx_delay']
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self.radiocontrol = config['RADIO']['control']
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self.rigctld_ip = config['RIGCTLD']['ip']
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self.rigctld_port = config['RIGCTLD']['port']
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self.states.setTransmitting(False)
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self.ptt_state = False
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self.radio_alc = 0.0
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self.tci_ip = config['TCI']['tci_ip']
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self.tci_port = config['TCI']['tci_port']
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self.AUDIO_SAMPLE_RATE = 48000
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self.MODEM_SAMPLE_RATE = codec2.api.FREEDV_FS_8000
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# 8192 Let's do some tests with very small chunks for TX
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self.AUDIO_FRAMES_PER_BUFFER_TX = 1200 if self.radiocontrol in ["tci"] else 2400 * 2
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# 8 * (self.AUDIO_SAMPLE_RATE/self.MODEM_SAMPLE_RATE) == 48
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self.AUDIO_CHANNELS = 1
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self.MODE = 0
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# Locking state for mod out so buffer will be filled before we can use it
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# https://github.com/DJ2LS/FreeDATA/issues/127
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# https://github.com/DJ2LS/FreeDATA/issues/99
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self.mod_out_locked = True
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self.rms_counter = 0
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# Make sure our resampler will work
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assert (self.AUDIO_SAMPLE_RATE / self.MODEM_SAMPLE_RATE) == codec2.api.FDMDV_OS_48 # type: ignore
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self.modem_transmit_queue = queue.Queue()
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self.modem_received_queue = queue.Queue()
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self.audio_received_queue = queue.Queue()
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self.data_queue_received = queue.Queue()
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self.event_manager = event_manager.EventManager([event_queue])
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self.fft_queue = fft_queue
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self.demodulator = demodulator.Demodulator(self.config,
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self.audio_received_queue,
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self.modem_received_queue,
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self.data_queue_received,
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self.states,
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self.event_manager,
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self.fft_queue
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)
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self.beacon = beacon.Beacon(self.config, self.states, event_queue,
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self.log, self.modem_transmit_queue)
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def tci_tx_callback(self, audio_48k) -> None:
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self.radio.set_ptt(True)
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self.event_manager.send_ptt_change(True)
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self.tci_module.push_audio(audio_48k)
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def start_modem(self):
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# testmode: We need to call the modem without audio parts for running protocol tests
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if self.radiocontrol not in ["tci"]:
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result = self.init_audio() if not TESTMODE else True
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if not result:
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raise RuntimeError("Unable to init audio devices")
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if not TESTMODE:
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self.demodulator.start(self.sd_input_stream)
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else:
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result = self.init_tci()
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if result not in [False]:
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# init codec2 instances
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self.init_codec2()
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# init rig control
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self.init_rig_control()
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# init data thread
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self.init_data_threads()
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if not TESTMODE:
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atexit.register(self.sd_input_stream.stop)
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# init beacon
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self.beacon.start()
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else:
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return False
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def stop_modem(self):
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try:
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# let's stop the modem service
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self.service_queue.put("stop")
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# simulate audio class active state for reducing cli output
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# self.stream = lambda: None
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# self.stream.active = False
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# self.stream.stop
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self.beacon.stop()
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except Exception:
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self.log.error("[MDM] Error stopping modem")
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def init_audio(self):
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self.log.info(f"[MDM] init: get audio devices", input_device=self.audio_input_device,
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output_device=self.audio_output_device)
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try:
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result = audio.get_device_index_from_crc(self.audio_input_device, True)
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if result is None:
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raise ValueError("Invalid input device")
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else:
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in_dev_index, in_dev_name = result
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result = audio.get_device_index_from_crc(self.audio_output_device, False)
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if result is None:
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raise ValueError("Invalid output device")
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else:
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out_dev_index, out_dev_name = result
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self.log.info(f"[MDM] init: receiving audio from '{in_dev_name}'")
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self.log.info(f"[MDM] init: transmiting audio on '{out_dev_name}'")
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self.log.debug("[MDM] init: starting pyaudio callback and decoding threads")
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sd.default.samplerate = self.AUDIO_SAMPLE_RATE
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sd.default.device = (in_dev_index, out_dev_index)
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# init codec2 resampler
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self.resampler = codec2.resampler()
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# SoundDevice audio input stream
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self.sd_input_stream = sd.InputStream(
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channels=1,
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dtype="int16",
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callback=self.demodulator.sd_input_audio_callback,
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device=in_dev_index,
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samplerate=self.AUDIO_SAMPLE_RATE,
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blocksize=4800,
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)
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self.sd_input_stream.start()
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return True
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except Exception as audioerr:
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self.log.error("[MDM] init: starting pyaudio callback failed", e=audioerr)
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self.stop_modem()
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return False
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def init_tci(self):
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# placeholder area for processing audio via TCI
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# https://github.com/maksimus1210/TCI
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self.log.warning("[MDM] [TCI] Not yet fully implemented", ip=self.tci_ip, port=self.tci_port)
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# we are trying this by simulating an audio stream Object like with mkfifo
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class Object:
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"""An object for simulating audio stream"""
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active = True
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self.stream = Object()
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# lets init TCI module
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self.tci_module = tci.TCICtrl(self.audio_received_queue)
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tci_rx_callback_thread = threading.Thread(
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target=self.tci_rx_callback,
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name="TCI RX CALLBACK THREAD",
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daemon=True,
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)
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tci_rx_callback_thread.start()
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# let's start the audio tx callback
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self.log.debug("[MDM] Starting tci tx callback thread")
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tci_tx_callback_thread = threading.Thread(
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target=self.tci_tx_callback,
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name="TCI TX CALLBACK THREAD",
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daemon=True,
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)
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tci_tx_callback_thread.start()
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return True
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def audio_auto_tune(self):
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# enable / disable AUDIO TUNE Feature / ALC correction
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if self.enable_audio_auto_tune:
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if self.radio_alc == 0.0:
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self.tx_audio_level = self.tx_audio_level + 20
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elif 0.0 < self.radio_alc <= 0.1:
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print("0.0 < self.radio_alc <= 0.1")
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self.tx_audio_level = self.tx_audio_level + 2
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self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
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alc_level=str(self.radio_alc))
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elif 0.1 < self.radio_alc < 0.2:
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print("0.1 < self.radio_alc < 0.2")
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self.tx_audio_level = self.tx_audio_level
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self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
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alc_level=str(self.radio_alc))
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elif 0.2 < self.radio_alc < 0.99:
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print("0.2 < self.radio_alc < 0.99")
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self.tx_audio_level = self.tx_audio_level - 20
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self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
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alc_level=str(self.radio_alc))
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elif 1.0 >= self.radio_alc:
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print("1.0 >= self.radio_alc")
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self.tx_audio_level = self.tx_audio_level - 40
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self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
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alc_level=str(self.radio_alc))
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else:
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self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
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alc_level=str(self.radio_alc))
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def transmit(
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self, mode, repeats: int, repeat_delay: int, frames: bytearray
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) -> bool:
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"""
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Args:
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mode:
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repeats:
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repeat_delay:
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frames:
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"""
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if TESTMODE:
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return
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self.demodulator.reset_data_sync()
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# get freedv instance by mode
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mode_transition = {
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codec2.FREEDV_MODE.signalling: self.freedv_datac13_tx,
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codec2.FREEDV_MODE.datac0: self.freedv_datac0_tx,
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codec2.FREEDV_MODE.datac1: self.freedv_datac1_tx,
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codec2.FREEDV_MODE.datac3: self.freedv_datac3_tx,
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codec2.FREEDV_MODE.datac4: self.freedv_datac4_tx,
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codec2.FREEDV_MODE.datac13: self.freedv_datac13_tx,
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}
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if mode in mode_transition:
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freedv = mode_transition[mode]
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else:
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print("wrong mode.................")
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print(mode)
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return False
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# Wait for some other thread that might be transmitting
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self.states.waitForTransmission()
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self.states.setTransmitting(True)
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# if we're transmitting FreeDATA signals, reset channel busy state
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self.states.set("channel_busy", False)
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start_of_transmission = time.time()
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# TODO Moved ptt toggle some steps before audio is ready for testing
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# Toggle ptt early to save some time and send ptt state via socket
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# self.radio.set_ptt(True)
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# jsondata = {"ptt": "True"}
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# data_out = json.dumps(jsondata)
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# sock.SOCKET_QUEUE.put(data_out)
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# Open codec2 instance
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self.MODE = mode
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# Get number of bytes per frame for mode
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bytes_per_frame = int(codec2.api.freedv_get_bits_per_modem_frame(freedv) / 8)
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payload_bytes_per_frame = bytes_per_frame - 2
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# Init buffer for data
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n_tx_modem_samples = codec2.api.freedv_get_n_tx_modem_samples(freedv)
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mod_out = ctypes.create_string_buffer(n_tx_modem_samples * 2)
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# Init buffer for preample
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n_tx_preamble_modem_samples = codec2.api.freedv_get_n_tx_preamble_modem_samples(
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freedv
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)
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mod_out_preamble = ctypes.create_string_buffer(n_tx_preamble_modem_samples * 2)
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# Init buffer for postamble
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n_tx_postamble_modem_samples = (
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codec2.api.freedv_get_n_tx_postamble_modem_samples(freedv)
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)
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mod_out_postamble = ctypes.create_string_buffer(
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n_tx_postamble_modem_samples * 2
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)
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# Add empty data to handle ptt toggle time
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if self.tx_delay > 0:
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data_delay = int(self.MODEM_SAMPLE_RATE * (self.tx_delay / 1000)) # type: ignore
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mod_out_silence = ctypes.create_string_buffer(data_delay * 2)
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txbuffer = bytes(mod_out_silence)
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else:
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txbuffer = bytes()
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self.log.debug(
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"[MDM] TRANSMIT", mode=self.MODE, payload=payload_bytes_per_frame, delay=self.tx_delay
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)
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if not isinstance(frames, list): frames = [frames]
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for _ in range(repeats):
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# Create modulation for all frames in the list
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for frame in frames:
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# Write preamble to txbuffer
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codec2.api.freedv_rawdatapreambletx(freedv, mod_out_preamble)
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txbuffer += bytes(mod_out_preamble)
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# Create buffer for data
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# Use this if CRC16 checksum is required (DATAc1-3)
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buffer = bytearray(payload_bytes_per_frame)
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# Set buffersize to length of data which will be send
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buffer[: len(frame)] = frame # type: ignore
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# Create crc for data frame -
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# Use the crc function shipped with codec2
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# to avoid CRC algorithm incompatibilities
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# Generate CRC16
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crc = ctypes.c_ushort(
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codec2.api.freedv_gen_crc16(bytes(buffer), payload_bytes_per_frame)
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)
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# Convert crc to 2-byte (16-bit) hex string
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crc = crc.value.to_bytes(2, byteorder="big")
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# Append CRC to data buffer
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buffer += crc
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data = (ctypes.c_ubyte * bytes_per_frame).from_buffer_copy(buffer)
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# modulate DATA and save it into mod_out pointer
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codec2.api.freedv_rawdatatx(freedv, mod_out, data)
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txbuffer += bytes(mod_out)
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# Write postamble to txbuffer
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codec2.api.freedv_rawdatapostambletx(freedv, mod_out_postamble)
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# Append postamble to txbuffer
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txbuffer += bytes(mod_out_postamble)
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# Add delay to end of frames
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samples_delay = int(self.MODEM_SAMPLE_RATE * (repeat_delay / 1000)) # type: ignore
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mod_out_silence = ctypes.create_string_buffer(samples_delay * 2)
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txbuffer += bytes(mod_out_silence)
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# Re-sample back up to 48k (resampler works on np.int16)
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x = np.frombuffer(txbuffer, dtype=np.int16)
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self.audio_auto_tune()
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x = audio.set_audio_volume(x, self.tx_audio_level)
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if not self.radiocontrol in ["tci"]:
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txbuffer_out = self.resampler.resample8_to_48(x)
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else:
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txbuffer_out = x
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# Explicitly lock our usage of mod_out_queue if needed
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# This could avoid audio problems on slower CPU
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# we will fill our modout list with all data, then start
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# processing it in audio callback
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self.mod_out_locked = True
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# -------------------------------
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# add modulation to modout_queue
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self.transmit_audio(txbuffer_out)
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# Release our mod_out_lock, so we can use the queue
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self.mod_out_locked = False
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# we need to wait manually for tci processing
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if self.radiocontrol in ["tci"]:
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duration = len(txbuffer_out) / 8000
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timestamp_to_sleep = time.time() + duration
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self.log.debug("[MDM] TCI calculated duration", duration=duration)
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tci_timeout_reached = False
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#while time.time() < timestamp_to_sleep:
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# threading.Event().wait(0.01)
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else:
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timestamp_to_sleep = time.time()
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# set tci timeout reached to True for overriding if not used
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tci_timeout_reached = True
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while not tci_timeout_reached:
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if self.radiocontrol in ["tci"]:
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if time.time() < timestamp_to_sleep:
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tci_timeout_reached = False
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else:
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tci_timeout_reached = True
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threading.Event().wait(0.01)
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# if we're transmitting FreeDATA signals, reset channel busy state
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self.states.set("channel_busy", False)
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self.radio.set_ptt(False)
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# Push ptt state to socket stream
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self.event_manager.send_ptt_change(False)
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# After processing, set the locking state back to true to be prepared for next transmission
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self.mod_out_locked = True
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self.states.setTransmitting(False)
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end_of_transmission = time.time()
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transmission_time = end_of_transmission - start_of_transmission
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self.log.debug("[MDM] ON AIR TIME", time=transmission_time)
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return True
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def transmit_morse(self, repeats, repeat_delay, frames):
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self.states.waitForTransmission()
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self.states.setTransmitting(True)
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# if we're transmitting FreeDATA signals, reset channel busy state
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self.states.set("channel_busy", False)
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self.log.debug(
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"[MDM] TRANSMIT", mode="MORSE"
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)
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start_of_transmission = time.time()
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txbuffer_out = cw.MorseCodePlayer().text_to_signal("DJ2LS-1")
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self.mod_out_locked = True
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self.transmit_audio(txbuffer_out)
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self.mod_out_locked = False
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# we need to wait manually for tci processing
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if self.radiocontrol in ["tci"]:
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duration = len(txbuffer_out) / 8000
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timestamp_to_sleep = time.time() + duration
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self.log.debug("[MDM] TCI calculated duration", duration=duration)
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tci_timeout_reached = False
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#while time.time() < timestamp_to_sleep:
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# threading.Event().wait(0.01)
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else:
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timestamp_to_sleep = time.time()
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# set tci timeout reached to True for overriding if not used
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tci_timeout_reached = True
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while not tci_timeout_reached:
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if self.radiocontrol in ["tci"]:
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if time.time() < timestamp_to_sleep:
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tci_timeout_reached = False
|
|
else:
|
|
tci_timeout_reached = True
|
|
|
|
threading.Event().wait(0.01)
|
|
# if we're transmitting FreeDATA signals, reset channel busy state
|
|
self.states.set("channel_busy", False)
|
|
|
|
self.radio.set_ptt(False)
|
|
|
|
# Push ptt state to socket stream
|
|
self.event_manager.send_ptt_change(False)
|
|
|
|
# After processing, set the locking state back to true to be prepared for next transmission
|
|
self.mod_out_locked = True
|
|
|
|
self.modem_transmit_queue.task_done()
|
|
self.states.setTransmitting(False)
|
|
|
|
end_of_transmission = time.time()
|
|
transmission_time = end_of_transmission - start_of_transmission
|
|
self.log.debug("[MDM] ON AIR TIME", time=transmission_time)
|
|
|
|
def init_codec2(self):
|
|
# Open codec2 instances
|
|
|
|
# INIT TX MODES - here we need all modes.
|
|
self.freedv_datac0_tx = codec2.open_instance(codec2.FREEDV_MODE.datac0.value)
|
|
self.freedv_datac1_tx = codec2.open_instance(codec2.FREEDV_MODE.datac1.value)
|
|
self.freedv_datac3_tx = codec2.open_instance(codec2.FREEDV_MODE.datac3.value)
|
|
self.freedv_datac4_tx = codec2.open_instance(codec2.FREEDV_MODE.datac4.value)
|
|
self.freedv_datac13_tx = codec2.open_instance(codec2.FREEDV_MODE.datac13.value)
|
|
|
|
def init_data_threads(self):
|
|
worker_received = threading.Thread(
|
|
target=self.demodulator.worker_received, name="WORKER_THREAD", daemon=True
|
|
)
|
|
worker_received.start()
|
|
|
|
# Low level modem audio transmit
|
|
def transmit_audio(self, audio_48k) -> None:
|
|
self.radio.set_ptt(True)
|
|
self.event_manager.send_ptt_change(True)
|
|
|
|
if self.radiocontrol in ["tci"]:
|
|
self.tci_tx_callback(audio_48k)
|
|
else:
|
|
sd.play(audio_48k, blocking=True)
|
|
return
|
|
|
|
def init_rig_control(self):
|
|
# Check how we want to control the radio
|
|
if self.radiocontrol == "rigctld":
|
|
import rigctld as rig
|
|
elif self.radiocontrol == "tci":
|
|
self.radio = self.tci_module
|
|
else:
|
|
import rigdummy as rig
|
|
|
|
if not self.radiocontrol in ["tci"]:
|
|
self.radio = rig.radio()
|
|
self.radio.open_rig(
|
|
rigctld_ip=self.rigctld_ip,
|
|
rigctld_port=self.rigctld_port,
|
|
)
|
|
hamlib_thread = threading.Thread(
|
|
target=self.update_rig_data, name="HAMLIB_THREAD", daemon=True
|
|
)
|
|
hamlib_thread.start()
|
|
|
|
hamlib_set_thread = threading.Thread(
|
|
target=self.set_rig_data, name="HAMLIB_SET_THREAD", daemon=True
|
|
)
|
|
hamlib_set_thread.start()
|
|
|
|
def set_rig_data(self) -> None:
|
|
"""
|
|
Set rigctld parameters like frequency, mode
|
|
THis needs to be processed in a queue
|
|
"""
|
|
while True:
|
|
cmd = RIGCTLD_COMMAND_QUEUE.get()
|
|
if cmd[0] == "set_frequency":
|
|
# [1] = Frequency
|
|
self.radio.set_frequency(cmd[1])
|
|
if cmd[0] == "set_mode":
|
|
# [1] = Mode
|
|
self.radio.set_mode(cmd[1])
|
|
|
|
def update_rig_data(self) -> None:
|
|
"""
|
|
Request information about the current state of the radio via hamlib
|
|
"""
|
|
while True:
|
|
try:
|
|
# this looks weird, but is necessary for avoiding rigctld packet colission sock
|
|
#threading.Event().wait(0.1)
|
|
self.states.set("radio_status", self.radio.get_status())
|
|
#threading.Event().wait(0.25)
|
|
self.states.set("radio_frequency", self.radio.get_frequency())
|
|
threading.Event().wait(0.1)
|
|
self.states.set("radio_mode", self.radio.get_mode())
|
|
threading.Event().wait(0.1)
|
|
self.states.set("radio_bandwidth", self.radio.get_bandwidth())
|
|
threading.Event().wait(0.1)
|
|
if self.states.isTransmitting():
|
|
self.radio_alc = self.radio.get_alc()
|
|
threading.Event().wait(0.1)
|
|
self.states.set("radio_rf_power", self.radio.get_level())
|
|
threading.Event().wait(0.1)
|
|
self.states.set("radio_strength", self.radio.get_strength())
|
|
|
|
except Exception as e:
|
|
self.log.warning(
|
|
"[MDM] error getting radio data",
|
|
e=e,
|
|
)
|
|
threading.Event().wait(1)
|
|
|