openwebrx-clone/owrx/controllers.py
2019-05-05 21:09:49 +02:00

128 lines
4.9 KiB
Python

import mimetypes
from owrx.websocket import WebSocketConnection
from owrx.config import PropertyManager
from owrx.source import SpectrumThread, DspManager, CpuUsageThread
import json
class Controller(object):
def __init__(self, handler, matches):
self.handler = handler
self.matches = matches
def send_response(self, content, code = 200, content_type = "text/html"):
self.handler.send_response(code)
if content_type is not None:
self.handler.send_header("Content-Type", content_type)
self.handler.end_headers()
if (type(content) == str):
content = content.encode()
self.handler.wfile.write(content)
def render_template(self, template, **variables):
f = open('htdocs/' + template)
data = f.read()
f.close()
self.send_response(data)
class StatusController(Controller):
def handle_request(self):
self.send_response("you have reached the status page!")
class IndexController(Controller):
def handle_request(self):
self.render_template("index.wrx")
class AssetsController(Controller):
def serve_file(self, file):
try:
f = open('htdocs/' + file, 'rb')
data = f.read()
f.close()
(content_type, encoding) = mimetypes.MimeTypes().guess_type(file)
self.send_response(data, content_type = content_type)
except FileNotFoundError:
self.send_response("file not found", code = 404)
def handle_request(self):
filename = self.matches.group(1)
self.serve_file(filename)
class ClientDataForwarder(object):
def __init__(self, conn):
self.conn = conn
def write_spectrum_data(self, data):
self.conn.send(bytes([0x01]) + data)
def write_dsp_data(self, data):
self.conn.send(bytes([0x02]) + data)
def write_s_meter_level(self, level):
self.conn.send({"type":"smeter","value":level})
def write_cpu_usage(self, usage):
self.conn.send({"type":"cpuusage","value":usage})
class WebSocketMessageHandler(object):
def __init__(self):
self.handshake = None
self.forwarder = None
def handleTextMessage(self, conn, message):
if (message[:16] == "SERVER DE CLIENT"):
# maybe put some more info in there? nothing to store yet.
self.handshake = "completed"
pm = PropertyManager.getSharedInstance()
config_keys = ["waterfall_colors", "waterfall_min_level", "waterfall_max_level",
"waterfall_auto_level_margin", "shown_center_freq", "samp_rate", "fft_size", "fft_fps",
"audio_compression", "fft_compression", "max_clients", "start_mod",
"client_audio_buffer_size"]
config = dict((key, pm.getPropertyValue(key)) for key in config_keys)
config["start_offset_freq"] = pm.getPropertyValue("start_freq") - pm.getPropertyValue("center_freq")
conn.send({"type":"config","value":config})
print("client connection intitialized")
receiver_keys = ["receiver_name", "receiver_location", "receiver_qra", "receiver_asl", "receiver_gps",
"photo_title", "photo_desc"]
receiver_details = dict((key, pm.getPropertyValue(key)) for key in receiver_keys)
conn.send({"type":"receiver_details","value":receiver_details})
self.forwarder = ClientDataForwarder(conn)
SpectrumThread.getSharedInstance().add_client(self.forwarder)
CpuUsageThread.getSharedInstance().add_client(self.forwarder)
self.dsp = DspManager(self.forwarder)
return
if not self.handshake:
print("not answering client request since handshake is not complete")
return
try:
message = json.loads(message)
if message["type"] == "dspcontrol":
if "params" in message:
params = message["params"]
for key, value in params.items():
self.dsp.setProperty(key, value)
if "action" in message and message["action"] == "start":
self.dsp.start()
except json.JSONDecodeError:
print("message is not json: {0}".format(message))
def handleBinaryMessage(self, conn, data):
print("unsupported binary message, discarding")
def handleClose(self, conn):
if self.forwarder:
SpectrumThread.getSharedInstance().remove_client(self.forwarder)
CpuUsageThread.getSharedInstance().remove_client(self.forwarder)
if self.dsp:
self.dsp.stop()
class WebSocketController(Controller):
def handle_request(self):
conn = WebSocketConnection(self.handler, WebSocketMessageHandler())
conn.send("CLIENT DE SERVER openwebrx.py")
# enter read loop
conn.read_loop()