209 lines
7.9 KiB
Python
209 lines
7.9 KiB
Python
import mimetypes
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from owrx.websocket import WebSocketConnection
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from owrx.config import PropertyManager
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from owrx.source import SpectrumThread, DspManager, CpuUsageThread, SdrService
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import json
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import os
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from datetime import datetime
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class Controller(object):
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def __init__(self, handler, matches):
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self.handler = handler
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self.matches = matches
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def send_response(self, content, code = 200, content_type = "text/html", last_modified: datetime = None, max_age = None):
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self.handler.send_response(code)
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if content_type is not None:
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self.handler.send_header("Content-Type", content_type)
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if last_modified is not None:
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self.handler.send_header("Last-Modified", last_modified.strftime("%a, %d %b %Y %H:%M:%S GMT"))
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if max_age is not None:
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self.handler.send_header("Cache-Control", "max-age: {0}".format(max_age))
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self.handler.end_headers()
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if (type(content) == str):
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content = content.encode()
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self.handler.wfile.write(content)
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def render_template(self, template, **variables):
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f = open('htdocs/' + template)
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data = f.read()
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f.close()
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self.send_response(data)
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class StatusController(Controller):
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def handle_request(self):
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self.send_response("you have reached the status page!")
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class AssetsController(Controller):
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def serve_file(self, file, content_type = None):
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try:
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modified = datetime.fromtimestamp(os.path.getmtime('htdocs/' + file))
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if "If-Modified-Since" in self.handler.headers:
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client_modified = datetime.strptime(self.handler.headers["If-Modified-Since"], "%a, %d %b %Y %H:%M:%S %Z")
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if modified <= client_modified:
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self.send_response("", code = 304)
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return
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f = open('htdocs/' + file, 'rb')
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data = f.read()
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f.close()
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if content_type is None:
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(content_type, encoding) = mimetypes.MimeTypes().guess_type(file)
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self.send_response(data, content_type = content_type, last_modified = modified, max_age = 3600)
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except FileNotFoundError:
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self.send_response("file not found", code = 404)
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def handle_request(self):
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filename = self.matches.group(1)
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self.serve_file(filename)
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class IndexController(AssetsController):
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def handle_request(self):
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self.serve_file("index.wrx", "text/html")
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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"]
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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.configProps = None
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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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CpuUsageThread.getSharedInstance().add_client(self)
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def sendConfig(self, key, value):
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config = dict((key, self.configProps[key]) for key in OpenWebRxClient.config_keys)
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# TODO mathematical properties? hmmmm
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config["start_offset_freq"] = self.configProps["start_freq"] - self.configProps["center_freq"]
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self.write_config(config)
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def setSdr(self, id = None):
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self.stopDsp()
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if self.configProps is not None:
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self.configProps.unwire(self.sendConfig)
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self.sdr = SdrService.getSource(id)
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# send initial config
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self.configProps = self.sdr.getProps().collect(*OpenWebRxClient.config_keys).defaults(PropertyManager.getSharedInstance())
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self.configProps.wire(self.sendConfig)
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self.sendConfig(None, None)
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self.sdr.getSpectrumThread().add_client(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 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.spectrumThread.remove_client(self)
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# TODO: this should be disabled somehow, just not with the dsp
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#CpuUsageThread.getSharedInstance().remove_client(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") \
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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 write_spectrum_data(self, data):
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self.conn.send(bytes([0x01]) + data)
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def write_dsp_data(self, data):
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self.conn.send(bytes([0x02]) + data)
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def write_s_meter_level(self, level):
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self.conn.send({"type":"smeter","value":level})
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def write_cpu_usage(self, usage):
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self.conn.send({"type":"cpuusage","value":usage})
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def write_secondary_fft(self, data):
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self.conn.send(bytes([0x03]) + data)
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def write_secondary_demod(self, data):
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self.conn.send(bytes([0x04]) + data)
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def write_secondary_dsp_config(self, cfg):
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self.conn.send({"type":"secondary_config", "value":cfg})
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def write_config(self, cfg):
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self.conn.send({"type":"config","value":cfg})
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def write_receiver_details(self, details):
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self.conn.send({"type":"receiver_details","value":details})
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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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print("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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print("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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else:
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print("received message without type: {0}".format(message))
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except json.JSONDecodeError:
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print("message is not json: {0}".format(message))
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def handleBinaryMessage(self, conn, data):
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print("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.stopDsp()
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class WebSocketController(Controller):
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def handle_request(self):
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conn = WebSocketConnection(self.handler, WebSocketMessageHandler())
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conn.send("CLIENT DE SERVER openwebrx.py")
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# enter read loop
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conn.read_loop()
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