465 lines
15 KiB
Python
465 lines
15 KiB
Python
from owrx.config import Config
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from owrx.details import ReceiverDetails
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from owrx.dsp import DspManager
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from owrx.cpu import CpuUsageThread
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from owrx.sdr import SdrService
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from owrx.source import SdrSource
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from owrx.client import ClientRegistry, TooManyClientsException
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from owrx.feature import FeatureDetector
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from owrx.version import openwebrx_version
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from owrx.bands import Bandplan
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from owrx.bookmarks import Bookmarks
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from owrx.map import Map
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from owrx.property import PropertyStack
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from owrx.modes import Modes, DigitalMode
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from queue import Queue, Full, Empty
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from js8py import Js8Frame
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from abc import ABC, ABCMeta, abstractmethod
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import json
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import threading
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import logging
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logger = logging.getLogger(__name__)
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PoisonPill = object()
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class Client(ABC):
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def __init__(self, conn):
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self.conn = conn
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self.multithreadingQueue = Queue(100)
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def mp_passthru():
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run = True
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while run:
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try:
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data = self.multithreadingQueue.get()
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if data is PoisonPill:
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run = False
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else:
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self.send(data)
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self.multithreadingQueue.task_done()
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except (EOFError, OSError, ValueError):
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run = False
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except Exception:
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logger.exception("Exception on client multithreading queue")
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# unset the queue object to free shared memory file descriptors
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self.multithreadingQueue = None
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threading.Thread(target=mp_passthru, name="connection_mp_passthru").start()
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def send(self, data):
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try:
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self.conn.send(data)
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except IOError:
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self.close()
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def close(self):
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if self.multithreadingQueue is not None:
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while True:
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try:
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self.multithreadingQueue.get(block=False)
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except Empty:
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break
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try:
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self.multithreadingQueue.put(PoisonPill, block=False)
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except Full:
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# this shouldn't happen, we just emptied the queue, but it's not worth risking the exception
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logger.exception("impossible queue state: Full after Empty")
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self.conn.close()
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def mp_send(self, data):
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if self.multithreadingQueue is None:
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return
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try:
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self.multithreadingQueue.put(data, block=False)
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except Full:
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self.close()
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@abstractmethod
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def handleTextMessage(self, conn, message):
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pass
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def handleBinaryMessage(self, conn, data):
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logger.error("unsupported binary message, discarding")
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def handleClose(self):
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self.close()
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class OpenWebRxClient(Client, metaclass=ABCMeta):
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def __init__(self, conn):
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super().__init__(conn)
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receiver_details = ReceiverDetails()
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def send_receiver_info(*args):
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receiver_info = receiver_details.__dict__()
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self.write_receiver_details(receiver_info)
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# TODO unsubscribe
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receiver_details.wire(send_receiver_info)
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send_receiver_info()
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def write_receiver_details(self, details):
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self.send({"type": "receiver_details", "value": details})
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class OpenWebRxReceiverClient(OpenWebRxClient):
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config_keys = [
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"waterfall_colors",
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"waterfall_min_level",
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"waterfall_max_level",
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"waterfall_auto_level_margin",
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"samp_rate",
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"fft_size",
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"audio_compression",
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"fft_compression",
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"max_clients",
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"start_mod",
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"start_freq",
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"center_freq",
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"initial_squelch_level",
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"profile_id",
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]
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def __init__(self, conn):
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super().__init__(conn)
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self.dsp = None
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self.sdr = None
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self.configSub = None
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self.connectionProperties = {}
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try:
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ClientRegistry.getSharedInstance().addClient(self)
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except TooManyClientsException:
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self.write_backoff_message("Too many clients")
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self.close()
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raise
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self.setSdr()
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features = FeatureDetector().feature_availability()
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self.write_features(features)
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modes = Modes.getModes()
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self.write_modes(modes)
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self.__sendProfiles()
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CpuUsageThread.getSharedInstance().add_client(self)
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def __sendProfiles(self):
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profiles = [
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{"name": s.getName() + " " + p["name"], "id": sid + "|" + pid}
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for (sid, s) in SdrService.getSources().items()
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for (pid, p) in s.getProfiles().items()
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]
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self.write_profiles(profiles)
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def handleTextMessage(self, conn, message):
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try:
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message = json.loads(message)
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if "type" in message:
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if message["type"] == "dspcontrol":
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if "action" in message and message["action"] == "start":
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self.startDsp()
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if "params" in message:
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dsp = self.getDsp()
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if dsp is None:
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logger.warning("DSP not available; discarding client data")
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else:
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params = message["params"]
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dsp.setProperties(params)
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elif message["type"] == "config":
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if "params" in message:
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self.setParams(message["params"])
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elif message["type"] == "setsdr":
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if "params" in message:
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self.setSdr(message["params"]["sdr"])
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elif message["type"] == "selectprofile":
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if "params" in message and "profile" in message["params"]:
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profile = message["params"]["profile"].split("|")
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self.setSdr(profile[0])
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self.sdr.activateProfile(profile[1])
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elif message["type"] == "connectionproperties":
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if "params" in message:
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self.connectionProperties = message["params"]
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if self.dsp:
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self.getDsp().setProperties(self.connectionProperties)
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else:
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logger.warning("received message without type: {0}".format(message))
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except json.JSONDecodeError:
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logger.warning("message is not json: {0}".format(message))
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def setSdr(self, id=None):
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while True:
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next = None
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if id is not None:
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next = SdrService.getSource(id)
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if next is None:
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next = SdrService.getFirstSource()
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if next is None:
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# exit condition: no sdrs available
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logger.warning("no more SDR devices available")
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self.handleNoSdrsAvailable()
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return
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# exit condition: no change
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if next == self.sdr:
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return
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self.stopDsp()
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if self.configSub is not None:
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self.configSub.cancel()
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self.configSub = None
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self.sdr = next
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self.getDsp()
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# found a working sdr, exit the loop
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if self.sdr.getState() != SdrSource.STATE_FAILED:
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break
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logger.warning('SDR device "%s" has failed, selecing new device', self.sdr.getName())
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self.write_log_message('SDR device "{0}" has failed, selecting new device'.format(self.sdr.getName()))
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# send initial config
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self.getDsp().setProperties(self.connectionProperties)
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stack = PropertyStack()
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stack.addLayer(0, self.sdr.getProps())
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stack.addLayer(1, Config.get())
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configProps = stack.filter(*OpenWebRxReceiverClient.config_keys)
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def sendConfig(key, value):
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config = configProps.__dict__()
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# TODO mathematical properties? hmmmm
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config["start_offset_freq"] = configProps["start_freq"] - configProps["center_freq"]
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# TODO this is a hack to support multiple sdrs
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config["sdr_id"] = self.sdr.getId()
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self.write_config(config)
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cf = configProps["center_freq"]
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srh = configProps["samp_rate"] / 2
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frequencyRange = (cf - srh, cf + srh)
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self.write_dial_frequendies(Bandplan.getSharedInstance().collectDialFrequencies(frequencyRange))
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bookmarks = [b.__dict__() for b in Bookmarks.getSharedInstance().getBookmarks(frequencyRange)]
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self.write_bookmarks(bookmarks)
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self.configSub = configProps.wire(sendConfig)
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sendConfig(None, None)
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self.__sendProfiles()
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self.sdr.addSpectrumClient(self)
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def handleNoSdrsAvailable(self):
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self.write_sdr_error("No SDR Devices available")
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def startDsp(self):
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self.getDsp().start()
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def close(self):
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self.stopDsp()
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CpuUsageThread.getSharedInstance().remove_client(self)
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ClientRegistry.getSharedInstance().removeClient(self)
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if self.configSub is not None:
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self.configSub.cancel()
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self.configSub = None
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super().close()
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def stopDsp(self):
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if self.dsp is not None:
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self.dsp.stop()
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self.dsp = None
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if self.sdr is not None:
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self.sdr.removeSpectrumClient(self)
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def setParams(self, params):
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config = Config.get()
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# allow direct configuration only if enabled in the config
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if "configurable_keys" not in config:
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return
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keys = config["configurable_keys"]
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if not keys:
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return
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# only the keys in the protected property manager can be overridden from the web
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stack = PropertyStack()
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stack.addLayer(0, self.sdr.getProps())
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stack.addLayer(1, config)
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protected = stack.filter(*keys)
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for key, value in params.items():
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try:
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protected[key] = value
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except KeyError:
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pass
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def getDsp(self):
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if self.dsp is None and self.sdr is not None:
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self.dsp = DspManager(self, self.sdr)
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return self.dsp
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def write_spectrum_data(self, data):
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self.mp_send(bytes([0x01]) + data)
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def write_dsp_data(self, data):
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self.send(bytes([0x02]) + data)
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def write_hd_audio(self, data):
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self.send(bytes([0x04]) + data)
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def write_s_meter_level(self, level):
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self.send({"type": "smeter", "value": level})
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def write_cpu_usage(self, usage):
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self.mp_send({"type": "cpuusage", "value": usage})
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def write_clients(self, clients):
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self.mp_send({"type": "clients", "value": clients})
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def write_secondary_fft(self, data):
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self.send(bytes([0x03]) + data)
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def write_secondary_demod(self, data):
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message = data.decode("ascii", "replace")
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self.send({"type": "secondary_demod", "value": message})
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def write_secondary_dsp_config(self, cfg):
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self.send({"type": "secondary_config", "value": cfg})
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def write_config(self, cfg):
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self.send({"type": "config", "value": cfg})
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def write_profiles(self, profiles):
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self.send({"type": "profiles", "value": profiles})
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def write_features(self, features):
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self.send({"type": "features", "value": features})
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def write_metadata(self, metadata):
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self.send({"type": "metadata", "value": metadata})
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def write_wsjt_message(self, message):
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self.send({"type": "wsjt_message", "value": message})
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def write_dial_frequendies(self, frequencies):
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self.send({"type": "dial_frequencies", "value": frequencies})
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def write_bookmarks(self, bookmarks):
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self.send({"type": "bookmarks", "value": bookmarks})
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def write_aprs_data(self, data):
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self.send({"type": "aprs_data", "value": data})
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def write_log_message(self, message):
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self.send({"type": "log_message", "value": message})
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def write_sdr_error(self, message):
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self.send({"type": "sdr_error", "value": message})
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def write_pocsag_data(self, data):
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self.send({"type": "pocsag_data", "value": data})
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def write_backoff_message(self, reason):
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self.send({"type": "backoff", "reason": reason})
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def write_js8_message(self, frame: Js8Frame, freq: int):
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self.send({"type": "js8_message", "value": {
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"msg": str(frame),
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"timestamp": frame.timestamp,
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"db": frame.db,
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"dt": frame.dt,
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"freq": freq + frame.freq,
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"thread_type": frame.thread_type,
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"mode": frame.mode
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}})
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def write_modes(self, modes):
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def to_json(m):
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res = {
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"modulation": m.modulation,
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"name": m.name,
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"type": "digimode" if isinstance(m, DigitalMode) else "analog",
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"requirements": m.requirements,
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"squelch": m.squelch,
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}
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if m.bandpass is not None:
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res["bandpass"] = {
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"low_cut": m.bandpass.low_cut,
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"high_cut": m.bandpass.high_cut
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}
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if isinstance(m, DigitalMode):
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res["underlying"] = m.underlying
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return res
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self.send({"type": "modes", "value": [to_json(m) for m in modes]})
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class MapConnection(OpenWebRxClient):
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def __init__(self, conn):
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super().__init__(conn)
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pm = Config.get()
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self.write_config(pm.filter("google_maps_api_key", "receiver_gps", "map_position_retention_time").__dict__())
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Map.getSharedInstance().addClient(self)
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def handleTextMessage(self, conn, message):
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pass
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def close(self):
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Map.getSharedInstance().removeClient(self)
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super().close()
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def write_config(self, cfg):
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self.send({"type": "config", "value": cfg})
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def write_update(self, update):
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self.mp_send({"type": "update", "value": update})
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class WebSocketMessageHandler(object):
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def __init__(self):
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self.handshake = None
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def handleTextMessage(self, conn, message):
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if message[:16] == "SERVER DE CLIENT":
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meta = message[17:].split(" ")
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self.handshake = {v[0]: "=".join(v[1:]) for v in map(lambda x: x.split("="), meta)}
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conn.send("CLIENT DE SERVER server=openwebrx version={version}".format(version=openwebrx_version))
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logger.debug("client connection intitialized")
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if "type" in self.handshake:
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if self.handshake["type"] == "receiver":
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client = OpenWebRxReceiverClient(conn)
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if self.handshake["type"] == "map":
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client = MapConnection(conn)
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# backwards compatibility
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else:
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client = OpenWebRxReceiverClient(conn)
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# hand off all further communication to the correspondig connection
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conn.setMessageHandler(client)
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return
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if not self.handshake:
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logger.warning("not answering client request since handshake is not complete")
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return
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def handleBinaryMessage(self, conn, data):
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pass
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def handleClose(self):
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pass
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