192 lines
7.3 KiB
Python
192 lines
7.3 KiB
Python
from owrx.config import PropertyManager
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from owrx.source import DspManager, CpuUsageThread, SdrService, ClientRegistry
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from owrx.feature import FeatureDetector
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import json
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import logging
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logger = logging.getLogger(__name__)
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class OpenWebRxClient(object):
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config_keys = ["waterfall_colors", "waterfall_min_level", "waterfall_max_level",
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"waterfall_auto_level_margin", "lfo_offset", "samp_rate", "fft_size", "fft_fps",
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"audio_compression", "fft_compression", "max_clients", "start_mod",
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"client_audio_buffer_size", "start_freq", "center_freq", "mathbox_waterfall_colors",
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"mathbox_waterfall_history_length", "mathbox_waterfall_frequency_resolution"]
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def __init__(self, conn):
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self.conn = 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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ClientRegistry.getSharedInstance().addClient(self)
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pm = PropertyManager.getSharedInstance()
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self.setSdr()
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# send receiver info
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receiver_keys = ["receiver_name", "receiver_location", "receiver_qra", "receiver_asl", "receiver_gps",
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"photo_title", "photo_desc"]
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receiver_details = dict((key, pm.getPropertyValue(key)) for key in receiver_keys)
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self.write_receiver_details(receiver_details)
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profiles = [{"name": s.getName() + " " + p["name"], "id":sid + "|" + pid} for (sid, s) in SdrService.getSources().items() for (pid, p) in s.getProfiles().items()]
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self.write_profiles(profiles)
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features = FeatureDetector().feature_availability()
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self.write_features(features)
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CpuUsageThread.getSharedInstance().add_client(self)
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def setSdr(self, id = None):
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next = SdrService.getSource(id)
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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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# send initial config
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configProps = self.sdr.getProps().collect(*OpenWebRxClient.config_keys).defaults(PropertyManager.getSharedInstance())
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def sendConfig(key, value):
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config = dict((key, configProps[key]) for key in OpenWebRxClient.config_keys)
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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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self.write_config(config)
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self.configSub = configProps.wire(sendConfig)
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sendConfig(None, None)
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self.sdr.addSpectrumClient(self)
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def startDsp(self):
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if self.dsp is None:
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self.dsp = DspManager(self, self.sdr)
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self.dsp.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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self.conn.close()
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logger.debug("connection closed")
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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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# only the keys in the protected property manager can be overridden from the web
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protected = self.sdr.getProps().collect("samp_rate", "center_freq", "rf_gain", "type", "if_gain") \
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.defaults(PropertyManager.getSharedInstance())
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for key, value in params.items():
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protected[key] = value
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def setDspProperties(self, params):
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for key, value in params.items():
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self.dsp.setProperty(key, value)
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def protected_send(self, data):
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try:
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self.conn.send(data)
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# these exception happen when the socket is closed
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except OSError:
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self.close()
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except ValueError:
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self.close()
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def write_spectrum_data(self, data):
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self.protected_send(bytes([0x01]) + data)
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def write_dsp_data(self, data):
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self.protected_send(bytes([0x02]) + data)
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def write_s_meter_level(self, level):
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self.protected_send({"type":"smeter","value":level})
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def write_cpu_usage(self, usage):
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self.protected_send({"type":"cpuusage","value":usage})
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def write_clients(self, clients):
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self.protected_send({"type":"clients","value":clients})
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def write_secondary_fft(self, data):
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self.protected_send(bytes([0x03]) + data)
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def write_secondary_demod(self, data):
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self.protected_send(bytes([0x04]) + data)
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def write_secondary_dsp_config(self, cfg):
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self.protected_send({"type":"secondary_config", "value":cfg})
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def write_config(self, cfg):
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self.protected_send({"type":"config","value":cfg})
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def write_receiver_details(self, details):
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self.protected_send({"type":"receiver_details","value":details})
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def write_profiles(self, profiles):
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self.protected_send({"type":"profiles","value":profiles})
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def write_features(self, features):
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self.protected_send({"type":"features","value":features})
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def write_metadata(self, metadata):
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self.protected_send({"type":"metadata","value":metadata})
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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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self.client = None
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self.dsp = None
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def handleTextMessage(self, conn, message):
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if (message[:16] == "SERVER DE CLIENT"):
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# maybe put some more info in there? nothing to store yet.
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self.handshake = "completed"
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logger.debug("client connection intitialized")
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self.client = OpenWebRxClient(conn)
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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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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.client.startDsp()
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if "params" in message:
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params = message["params"]
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self.client.setDspProperties(params)
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if message["type"] == "config":
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if "params" in message:
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self.client.setParams(message["params"])
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if message["type"] == "setsdr":
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if "params" in message:
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self.client.setSdr(message["params"]["sdr"])
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if 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.client.setSdr(profile[0])
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self.client.sdr.activateProfile(profile[1])
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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 handleBinaryMessage(self, conn, data):
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logger.error("unsupported binary message, discarding")
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def handleClose(self, conn):
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if self.client:
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self.client.close()
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