class OpenWebRxReceiverClient(Client):
config_keys = [
"waterfall_colors",
"waterfall_min_level",
"waterfall_max_level",
"waterfall_auto_level_margin",
"samp_rate",
"fft_size",
"fft_fps",
"audio_compression",
"fft_compression",
"max_clients",
"start_mod",
"start_freq",
"center_freq",
"initial_squelch_level",
"profile_id",
]
def __init__(self, conn):
super().__init__(conn)
self.dsp = None
self.sdr = None
self.configSub = None
self.connectionProperties = {}
try:
ClientRegistry.getSharedInstance().addClient(self)
except TooManyClientsException:
self.write_backoff_message("Too many clients")
self.close()
raise
pm = PropertyManager.getSharedInstance()
self.setSdr()
# send receiver info
receiver_keys = [
"receiver_name",
"receiver_location",
"receiver_asl",
"receiver_gps",
"photo_title",
"photo_desc",
]
receiver_details = dict((key, pm.getPropertyValue(key)) for key in receiver_keys)
receiver_details["locator"] = Locator.fromCoordinates(receiver_details["receiver_gps"])
self.write_receiver_details(receiver_details)
self.__sendProfiles()
features = FeatureDetector().feature_availability()
self.write_features(features)
CpuUsageThread.getSharedInstance().add_client(self)
def __sendProfiles(self):
profiles = [
{"name": s.getName() + " " + p["name"], "id": sid + "|" + pid}
for (sid, s) in SdrService.getSources().items()
for (pid, p) in s.getProfiles().items()
]
self.write_profiles(profiles)
def handleTextMessage(self, conn, message):
try:
message = json.loads(message)
if "type" in message:
if message["type"] == "dspcontrol":
if "action" in message and message["action"] == "start":
self.startDsp()
if "params" in message:
params = message["params"]
self.setDspProperties(params)
elif message["type"] == "config":
if "params" in message:
self.setParams(message["params"])
elif message["type"] == "setsdr":
if "params" in message:
self.setSdr(message["params"]["sdr"])
elif message["type"] == "selectprofile":
if "params" in message and "profile" in message["params"]:
profile = message["params"]["profile"].split("|")
self.setSdr(profile[0])
self.sdr.activateProfile(profile[1])
elif message["type"] == "connectionproperties":
if "params" in message:
self.connectionProperties = message["params"]
if self.dsp:
self.setDspProperties(self.connectionProperties)
else:
logger.warning("received message without type: {0}".format(message))
except json.JSONDecodeError:
logger.warning("message is not json: {0}".format(message))
def setSdr(self, id=None):
while True:
next = None
if id is not None:
next = SdrService.getSource(id)
if next is None:
next = SdrService.getFirstSource()
if next is None:
# exit condition: no sdrs available
self.handleNoSdrsAvailable()
return
# exit condition: no change
if next == self.sdr:
return
self.stopDsp()
if self.configSub is not None:
self.configSub.cancel()
self.configSub = None
self.sdr = next
self.startDsp()
# keep trying until we find a suitable SDR
if self.sdr.getState() == SdrSource.STATE_FAILED:
self.write_log_message('SDR device "{0}" has failed, selecting new device'.format(self.sdr.getName()))
else:
break
# send initial config
self.setDspProperties(self.connectionProperties)
configProps = (
self.sdr.getProps()
.collect(*OpenWebRxReceiverClient.config_keys)
.defaults(PropertyManager.getSharedInstance())
)
def sendConfig(key, value):
config = dict((key, configProps[key]) for key in OpenWebRxReceiverClient.config_keys)
# TODO mathematical properties? hmmmm
config["start_offset_freq"] = configProps["start_freq"] - configProps["center_freq"]
# TODO this is a hack to support multiple sdrs
config["sdr_id"] = self.sdr.getId()
self.write_config(config)
cf = configProps["center_freq"]
srh = configProps["samp_rate"] / 2
frequencyRange = (cf - srh, cf + srh)
self.write_dial_frequendies(Bandplan.getSharedInstance().collectDialFrequencies(frequencyRange))
bookmarks = [b.__dict__() for b in Bookmarks.getSharedInstance().getBookmarks(frequencyRange)]
self.write_bookmarks(bookmarks)
self.configSub = configProps.wire(sendConfig)
sendConfig(None, None)
self.__sendProfiles()
self.sdr.addSpectrumClient(self)
def handleNoSdrsAvailable(self):
self.write_sdr_error("No SDR Devices available")
def startDsp(self):
if self.dsp is None and self.sdr is not None:
self.dsp = DspManager(self, self.sdr)
self.dsp.start()
def close(self):
self.stopDsp()
CpuUsageThread.getSharedInstance().remove_client(self)
ClientRegistry.getSharedInstance().removeClient(self)
if self.configSub is not None:
self.configSub.cancel()
self.configSub = None
super().close()
def stopDsp(self):
if self.dsp is not None:
self.dsp.stop()
self.dsp = None
if self.sdr is not None:
self.sdr.removeSpectrumClient(self)
def setParams(self, params):
# allow direct configuration only if enabled in the config
keys = PropertyManager.getSharedInstance()["configurable_keys"]
if not keys:
return
# only the keys in the protected property manager can be overridden from the web
protected = (
self.sdr.getProps()
.collect(*keys)
.defaults(PropertyManager.getSharedInstance())
)
for key, value in params.items():
protected[key] = value
def setDspProperties(self, params):
for key, value in params.items():
self.dsp.setProperty(key, value)
def write_spectrum_data(self, data):
self.mp_send(bytes([0x01]) + data)
def write_dsp_data(self, data):
self.send(bytes([0x02]) + data)
def write_s_meter_level(self, level):
self.send({"type": "smeter", "value": level})
def write_cpu_usage(self, usage):
self.mp_send({"type": "cpuusage", "value": usage})
def write_clients(self, clients):
self.mp_send({"type": "clients", "value": clients})
def write_secondary_fft(self, data):
self.send(bytes([0x03]) + data)
def write_secondary_demod(self, data):
message = data.decode("ascii", "replace")
self.send({"type": "secondary_demod", "value": message})
def write_secondary_dsp_config(self, cfg):
self.send({"type": "secondary_config", "value": cfg})
def write_config(self, cfg):
self.send({"type": "config", "value": cfg})
def write_receiver_details(self, details):
self.send({"type": "receiver_details", "value": details})
def write_profiles(self, profiles):
self.send({"type": "profiles", "value": profiles})
def write_features(self, features):
self.send({"type": "features", "value": features})
def write_metadata(self, metadata):
self.send({"type": "metadata", "value": metadata})
def write_wsjt_message(self, message):
self.send({"type": "wsjt_message", "value": message})
def write_dial_frequendies(self, frequencies):
self.send({"type": "dial_frequencies", "value": frequencies})
def write_bookmarks(self, bookmarks):
self.send({"type": "bookmarks", "value": bookmarks})
def write_aprs_data(self, data):
self.send({"type": "aprs_data", "value": data})
def write_log_message(self, message):
self.send({"type": "log_message", "value": message})
def write_sdr_error(self, message):
self.send({"type": "sdr_error", "value": message})
def write_pocsag_data(self, data):
self.send({"type": "pocsag_data", "value": data})
def write_backoff_message(self, reason):
self.send({"type": "backoff", "reason": reason})
def getDsp(self):
with self.dspLock:
if self.dsp is None and self.sdr is not None:
self.dsp = DspManager(self, self.sdr)
return self.dsp
def startDsp(self):
if self.dsp is None and self.sdr is not None:
self.dsp = DspManager(self, self.sdr)
self.dsp.start()