mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
425 lines
15 KiB
Python
425 lines
15 KiB
Python
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
"""
|
|
Created on Wed Dec 23 07:04:24 2020
|
|
|
|
@author: DJ2LS
|
|
"""
|
|
|
|
# pylint: disable=invalid-name, line-too-long, c-extension-no-member
|
|
# pylint: disable=import-outside-toplevel
|
|
|
|
import atexit
|
|
import ctypes
|
|
import queue
|
|
import threading
|
|
import time
|
|
import codec2
|
|
import numpy as np
|
|
import sounddevice as sd
|
|
import structlog
|
|
import tci
|
|
import cw
|
|
from queues import RIGCTLD_COMMAND_QUEUE
|
|
import audio
|
|
import demodulator
|
|
|
|
TESTMODE = False
|
|
|
|
class RF:
|
|
"""Class to encapsulate interactions between the audio device and codec2"""
|
|
|
|
log = structlog.get_logger("RF")
|
|
|
|
def __init__(self, config, event_manager, fft_queue, service_queue, states, radio_manager) -> None:
|
|
self.config = config
|
|
self.service_queue = service_queue
|
|
self.states = states
|
|
self.event_manager = event_manager
|
|
self.radio = radio_manager
|
|
self.sampler_avg = 0
|
|
self.buffer_avg = 0
|
|
|
|
# these are crc ids now
|
|
self.audio_input_device = config['AUDIO']['input_device']
|
|
self.audio_output_device = config['AUDIO']['output_device']
|
|
|
|
self.tx_audio_level = config['AUDIO']['tx_audio_level']
|
|
self.enable_audio_auto_tune = config['AUDIO']['enable_auto_tune']
|
|
self.tx_delay = config['MODEM']['tx_delay']
|
|
|
|
self.radiocontrol = config['RADIO']['control']
|
|
self.rigctld_ip = config['RIGCTLD']['ip']
|
|
self.rigctld_port = config['RIGCTLD']['port']
|
|
|
|
self.states.setTransmitting(False)
|
|
|
|
self.ptt_state = False
|
|
self.radio_alc = 0.0
|
|
|
|
self.tci_ip = config['TCI']['tci_ip']
|
|
self.tci_port = config['TCI']['tci_port']
|
|
|
|
|
|
self.AUDIO_SAMPLE_RATE = 48000
|
|
self.MODEM_SAMPLE_RATE = codec2.api.FREEDV_FS_8000
|
|
|
|
# 8192 Let's do some tests with very small chunks for TX
|
|
self.AUDIO_FRAMES_PER_BUFFER_TX = 1200 if self.radiocontrol in ["tci"] else 2400 * 2
|
|
# 8 * (self.AUDIO_SAMPLE_RATE/self.MODEM_SAMPLE_RATE) == 48
|
|
self.AUDIO_CHANNELS = 1
|
|
self.MODE = 0
|
|
self.rms_counter = 0
|
|
|
|
# Make sure our resampler will work
|
|
assert (self.AUDIO_SAMPLE_RATE / self.MODEM_SAMPLE_RATE) == codec2.api.FDMDV_OS_48 # type: ignore
|
|
|
|
self.modem_received_queue = queue.Queue()
|
|
self.audio_received_queue = queue.Queue()
|
|
self.data_queue_received = queue.Queue()
|
|
self.fft_queue = fft_queue
|
|
|
|
self.demodulator = demodulator.Demodulator(self.config,
|
|
self.audio_received_queue,
|
|
self.modem_received_queue,
|
|
self.data_queue_received,
|
|
self.states,
|
|
self.event_manager,
|
|
self.fft_queue
|
|
)
|
|
|
|
|
|
|
|
def tci_tx_callback(self, audio_48k) -> None:
|
|
self.radio.set_ptt(True)
|
|
self.event_manager.send_ptt_change(True)
|
|
self.tci_module.push_audio(audio_48k)
|
|
|
|
def start_modem(self):
|
|
if TESTMODE:
|
|
return True
|
|
elif self.radiocontrol.lower() == "tci":
|
|
if not self.init_tci():
|
|
return False
|
|
else:
|
|
if not self.init_audio():
|
|
raise RuntimeError("Unable to init audio devices")
|
|
self.demodulator.start(self.sd_input_stream)
|
|
atexit.register(self.sd_input_stream.stop)
|
|
|
|
# Initialize codec2, rig control, and data threads
|
|
self.init_codec2()
|
|
self.init_data_threads()
|
|
|
|
return True
|
|
|
|
def stop_modem(self):
|
|
try:
|
|
# let's stop the modem service
|
|
self.service_queue.put("stop")
|
|
# simulate audio class active state for reducing cli output
|
|
# self.stream = lambda: None
|
|
# self.stream.active = False
|
|
# self.stream.stop
|
|
|
|
except Exception:
|
|
self.log.error("[MDM] Error stopping modem")
|
|
|
|
def init_audio(self):
|
|
self.log.info(f"[MDM] init: get audio devices", input_device=self.audio_input_device,
|
|
output_device=self.audio_output_device)
|
|
try:
|
|
result = audio.get_device_index_from_crc(self.audio_input_device, True)
|
|
if result is None:
|
|
raise ValueError("Invalid input device")
|
|
else:
|
|
in_dev_index, in_dev_name = result
|
|
|
|
result = audio.get_device_index_from_crc(self.audio_output_device, False)
|
|
if result is None:
|
|
raise ValueError("Invalid output device")
|
|
else:
|
|
out_dev_index, out_dev_name = result
|
|
|
|
self.log.info(f"[MDM] init: receiving audio from '{in_dev_name}'")
|
|
self.log.info(f"[MDM] init: transmiting audio on '{out_dev_name}'")
|
|
self.log.debug("[MDM] init: starting pyaudio callback and decoding threads")
|
|
|
|
sd.default.samplerate = self.AUDIO_SAMPLE_RATE
|
|
sd.default.device = (in_dev_index, out_dev_index)
|
|
|
|
# init codec2 resampler
|
|
self.resampler = codec2.resampler()
|
|
|
|
# SoundDevice audio input stream
|
|
self.sd_input_stream = sd.InputStream(
|
|
channels=1,
|
|
dtype="int16",
|
|
callback=self.demodulator.sd_input_audio_callback,
|
|
device=in_dev_index,
|
|
samplerate=self.AUDIO_SAMPLE_RATE,
|
|
blocksize=4800,
|
|
)
|
|
self.sd_input_stream.start()
|
|
|
|
return True
|
|
|
|
|
|
|
|
except Exception as audioerr:
|
|
self.log.error("[MDM] init: starting pyaudio callback failed", e=audioerr)
|
|
self.stop_modem()
|
|
return False
|
|
|
|
def init_tci(self):
|
|
# placeholder area for processing audio via TCI
|
|
# https://github.com/maksimus1210/TCI
|
|
self.log.warning("[MDM] [TCI] Not yet fully implemented", ip=self.tci_ip, port=self.tci_port)
|
|
|
|
# we are trying this by simulating an audio stream Object like with mkfifo
|
|
class Object:
|
|
"""An object for simulating audio stream"""
|
|
active = True
|
|
|
|
self.stream = Object()
|
|
|
|
# lets init TCI module
|
|
self.tci_module = tci.TCICtrl(self.audio_received_queue)
|
|
|
|
return True
|
|
|
|
def audio_auto_tune(self):
|
|
# enable / disable AUDIO TUNE Feature / ALC correction
|
|
if self.enable_audio_auto_tune:
|
|
if self.radio_alc == 0.0:
|
|
self.tx_audio_level = self.tx_audio_level + 20
|
|
elif 0.0 < self.radio_alc <= 0.1:
|
|
print("0.0 < self.radio_alc <= 0.1")
|
|
self.tx_audio_level = self.tx_audio_level + 2
|
|
self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
|
|
alc_level=str(self.radio_alc))
|
|
elif 0.1 < self.radio_alc < 0.2:
|
|
print("0.1 < self.radio_alc < 0.2")
|
|
self.tx_audio_level = self.tx_audio_level
|
|
self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
|
|
alc_level=str(self.radio_alc))
|
|
elif 0.2 < self.radio_alc < 0.99:
|
|
print("0.2 < self.radio_alc < 0.99")
|
|
self.tx_audio_level = self.tx_audio_level - 20
|
|
self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
|
|
alc_level=str(self.radio_alc))
|
|
elif 1.0 >= self.radio_alc:
|
|
print("1.0 >= self.radio_alc")
|
|
self.tx_audio_level = self.tx_audio_level - 40
|
|
self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
|
|
alc_level=str(self.radio_alc))
|
|
else:
|
|
self.log.debug("[MDM] AUDIO TUNE", audio_level=str(self.tx_audio_level),
|
|
alc_level=str(self.radio_alc))
|
|
|
|
def transmit(
|
|
self, mode, repeats: int, repeat_delay: int, frames: bytearray
|
|
) -> bool:
|
|
"""
|
|
|
|
Args:
|
|
mode:
|
|
repeats:
|
|
repeat_delay:
|
|
frames:
|
|
|
|
"""
|
|
if TESTMODE:
|
|
return
|
|
|
|
|
|
self.demodulator.reset_data_sync()
|
|
# get freedv instance by mode
|
|
mode_transition = {
|
|
codec2.FREEDV_MODE.signalling: self.freedv_datac13_tx,
|
|
codec2.FREEDV_MODE.datac0: self.freedv_datac0_tx,
|
|
codec2.FREEDV_MODE.datac1: self.freedv_datac1_tx,
|
|
codec2.FREEDV_MODE.datac3: self.freedv_datac3_tx,
|
|
codec2.FREEDV_MODE.datac4: self.freedv_datac4_tx,
|
|
codec2.FREEDV_MODE.datac13: self.freedv_datac13_tx,
|
|
}
|
|
if mode in mode_transition:
|
|
freedv = mode_transition[mode]
|
|
else:
|
|
print("wrong mode.................")
|
|
print(mode)
|
|
return False
|
|
|
|
# Wait for some other thread that might be transmitting
|
|
self.states.waitForTransmission()
|
|
self.states.setTransmitting(True)
|
|
#self.states.channel_busy_event.wait()
|
|
|
|
|
|
start_of_transmission = time.time()
|
|
|
|
# Open codec2 instance
|
|
self.MODE = mode
|
|
|
|
txbuffer = bytes()
|
|
|
|
# Add empty data to handle ptt toggle time
|
|
if self.tx_delay > 0:
|
|
self.transmit_add_silence(txbuffer, self.tx_delay)
|
|
|
|
self.log.debug(
|
|
"[MDM] TRANSMIT", mode=self.MODE.name, delay=self.tx_delay
|
|
)
|
|
|
|
if not isinstance(frames, list): frames = [frames]
|
|
for _ in range(repeats):
|
|
|
|
# Create modulation for all frames in the list
|
|
for frame in frames:
|
|
|
|
txbuffer = self.transmit_add_preamble(txbuffer, freedv)
|
|
txbuffer = self.transmit_create_frame(txbuffer, freedv, frame)
|
|
txbuffer = self.transmit_add_postamble(txbuffer, freedv)
|
|
|
|
# Add delay to end of frames
|
|
self.transmit_add_silence(txbuffer, repeat_delay)
|
|
|
|
# Re-sample back up to 48k (resampler works on np.int16)
|
|
x = np.frombuffer(txbuffer, dtype=np.int16)
|
|
|
|
self.audio_auto_tune()
|
|
x = audio.set_audio_volume(x, self.tx_audio_level)
|
|
|
|
if self.radiocontrol not in ["tci"]:
|
|
txbuffer_out = self.resampler.resample8_to_48(x)
|
|
else:
|
|
txbuffer_out = x
|
|
|
|
# transmit audio
|
|
self.transmit_audio(txbuffer_out)
|
|
|
|
self.radio.set_ptt(False)
|
|
self.event_manager.send_ptt_change(False)
|
|
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)
|
|
return True
|
|
|
|
def transmit_add_preamble(self, buffer, freedv):
|
|
|
|
# Init buffer for preample
|
|
n_tx_preamble_modem_samples = codec2.api.freedv_get_n_tx_preamble_modem_samples(
|
|
freedv
|
|
)
|
|
mod_out_preamble = ctypes.create_string_buffer(n_tx_preamble_modem_samples * 2)
|
|
|
|
# Write preamble to txbuffer
|
|
codec2.api.freedv_rawdatapreambletx(freedv, mod_out_preamble)
|
|
buffer += bytes(mod_out_preamble)
|
|
return buffer
|
|
|
|
def transmit_add_postamble(self, buffer, freedv):
|
|
# Init buffer for postamble
|
|
n_tx_postamble_modem_samples = (
|
|
codec2.api.freedv_get_n_tx_postamble_modem_samples(freedv)
|
|
)
|
|
mod_out_postamble = ctypes.create_string_buffer(
|
|
n_tx_postamble_modem_samples * 2
|
|
)
|
|
# Write postamble to txbuffer
|
|
codec2.api.freedv_rawdatapostambletx(freedv, mod_out_postamble)
|
|
# Append postamble to txbuffer
|
|
buffer += bytes(mod_out_postamble)
|
|
return buffer
|
|
|
|
def transmit_add_silence(self, buffer, duration):
|
|
data_delay = int(self.MODEM_SAMPLE_RATE * (duration / 1000)) # type: ignore
|
|
mod_out_silence = ctypes.create_string_buffer(data_delay * 2)
|
|
buffer += bytes(mod_out_silence)
|
|
return buffer
|
|
|
|
def transmit_create_frame(self, txbuffer, freedv, frame):
|
|
# Get number of bytes per frame for mode
|
|
bytes_per_frame = int(codec2.api.freedv_get_bits_per_modem_frame(freedv) / 8)
|
|
payload_bytes_per_frame = bytes_per_frame - 2
|
|
|
|
# Init buffer for data
|
|
n_tx_modem_samples = codec2.api.freedv_get_n_tx_modem_samples(freedv)
|
|
mod_out = ctypes.create_string_buffer(n_tx_modem_samples * 2)
|
|
|
|
# Create buffer for data
|
|
# Use this if CRC16 checksum is required (DATAc1-3)
|
|
buffer = bytearray(payload_bytes_per_frame)
|
|
# Set buffersize to length of data which will be send
|
|
buffer[: len(frame)] = frame # type: ignore
|
|
|
|
# Create crc for data frame -
|
|
# Use the crc function shipped with codec2
|
|
# to avoid CRC algorithm incompatibilities
|
|
# Generate CRC16
|
|
crc = ctypes.c_ushort(
|
|
codec2.api.freedv_gen_crc16(bytes(buffer), payload_bytes_per_frame)
|
|
)
|
|
# Convert crc to 2-byte (16-bit) hex string
|
|
crc = crc.value.to_bytes(2, byteorder="big")
|
|
# Append CRC to data buffer
|
|
buffer += crc
|
|
|
|
assert (bytes_per_frame == len(buffer))
|
|
data = (ctypes.c_ubyte * bytes_per_frame).from_buffer_copy(buffer)
|
|
# modulate DATA and save it into mod_out pointer
|
|
codec2.api.freedv_rawdatatx(freedv, mod_out, data)
|
|
txbuffer += bytes(mod_out)
|
|
return txbuffer
|
|
|
|
def transmit_morse(self, repeats, repeat_delay, frames):
|
|
self.states.waitForTransmission()
|
|
self.states.setTransmitting(True)
|
|
# if we're transmitting FreeDATA signals, reset channel busy state
|
|
self.log.debug(
|
|
"[MDM] TRANSMIT", mode="MORSE"
|
|
)
|
|
start_of_transmission = time.time()
|
|
|
|
txbuffer_out = cw.MorseCodePlayer().text_to_signal("DJ2LS-1")
|
|
|
|
self.transmit_audio(txbuffer_out)
|
|
self.radio.set_ptt(False)
|
|
self.event_manager.send_ptt_change(False)
|
|
|
|
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)
|
|
# we need to wait manually for tci processing
|
|
self.tci_module.wait_until_transmitted(audio_48k)
|
|
else:
|
|
sd.play(audio_48k, blocksize=4096, blocking=True)
|
|
return
|