multi-sdr capabilities!

config_webrx.py

@@ -71,12 +71,6 @@ fft_fps=9
 fft_size=4096 #Should be power of 2
 fft_voverlap_factor=0.3 #If fft_voverlap_factor is above 0, multiple FFTs will be used for creating a line on the diagram.
 
-# samp_rate = 250000
-samp_rate = 2400000
-center_freq = 144250000
-rf_gain = 5 #in dB. For an RTL-SDR, rf_gain=0 will set the tuner to auto gain mode, else it will be in manual gain mode.
-ppm = 0
-
 audio_compression="adpcm" #valid values: "adpcm", "none"
 fft_compression="adpcm" #valid values: "adpcm", "none"
 
@@ -104,7 +98,30 @@ Note: if you experience audio underruns while CPU usage is 100%, you can:
 # You can use other SDR hardware as well, by giving your own command that outputs the I/Q samples... Some examples of configuration are available here (default is RTL-SDR):
 
 # valid: "rtl_sdr", "sdrplay", "hackrf"
-rtl_type = "rtl_sdr"
+#rtl_type = "sdrplay"
+
+sdrs = {
+    "rtlsdr": {
+        "name": "RTL-SDR USB Stick",
+        "type": "rtl_sdr",
+        "center_freq": 438800000,
+        "rf_gain": 30,
+        "samp_rate": 2400000,
+        "ppm": 0,
+        "start_freq": 439275000,
+        "start_mod": "nfm"
+    },
+    "sdrplay": {
+        "name": "SDRPlay RSP2",
+        "type": "sdrplay",
+        "center_freq": 14150000,
+        "rf_gain": 30,
+        "samp_rate": 500000,
+        "ppm": 0,
+        "start_freq": 14070000,
+        "start_mod": "usb"
+    }
+}
 
 # >> RTL-SDR via rtl_sdr
 #start_rtl_command="rtl_sdr -s {samp_rate} -f {center_freq} -p {ppm} -g {rf_gain} -".format(rf_gain=rf_gain, center_freq=center_freq, samp_rate=samp_rate, ppm=ppm)
@@ -168,10 +185,7 @@ client_audio_buffer_size = 5
 # - also increase the latency
 # - decrease the chance of audio underruns
 
-start_freq = center_freq
-start_mod = "nfm" #nfm, am, lsb, usb, cw
-
-iq_server_port = 4951 #TCP port for ncat to listen on. It will send I/Q data over its connections, for internal use in OpenWebRX. It is only accessible from the localhost by default.
+iq_port_range = [4950, 4960] #TCP port for range ncat to listen on. It will send I/Q data over its connections, for internal use in OpenWebRX. It is only accessible from the localhost by default.
 
 #access_log = "~/openwebrx_access.log"
 

owrx/config.py

@@ -28,7 +28,7 @@ class PropertyManager(object):
         return PropertyManager.sharedInstance
 
     def collect(self, *props):
-        return PropertyManager(dict((name, self.getProperty(name)) for name in props))
+        return PropertyManager(dict((name, self.getProperty(name) if self.hasProperty(name) else Property()) for name in props))
 
     def __init__(self, properties = None):
         self.properties = {}
@@ -52,10 +52,15 @@ class PropertyManager(object):
         return self.getPropertyValue(name)
 
     def __setitem__(self, name, value):
+        if not self.hasProperty(name):
+            self.add(name, Property())
         self.getProperty(name).setValue(value)
 
+    def hasProperty(self, name):
+        return name in self.properties
+
     def getProperty(self, name):
-        if not name in self.properties:
+        if not self.hasProperty(name):
             self.add(name, Property())
         return self.properties[name]
 
@@ -66,6 +71,16 @@ class PropertyManager(object):
         self.callbacks.append(callback)
         return self
 
+    def unwire(self, callback):
+        self.callbacks.remove(callback)
+        return self
+
+    def defaults(self, other_pm):
+        for (key, p) in self.properties.items():
+            if p.getValue() is None:
+                p.setValue(other_pm[key])
+        return self
+
 class RequirementMissingException(Exception):
     pass
 

owrx/controllers.py

@@ -1,7 +1,7 @@
 import mimetypes
 from owrx.websocket import WebSocketConnection
 from owrx.config import PropertyManager
-from owrx.source import SpectrumThread, DspManager, CpuUsageThread
+from owrx.source import SpectrumThread, DspManager, CpuUsageThread, SdrService
 import json
 import os
 from datetime import datetime
@@ -62,8 +62,76 @@ class IndexController(AssetsController):
         self.serve_file("index.wrx", "text/html")
 
 class OpenWebRxClient(object):
+    config_keys = ["waterfall_colors", "waterfall_min_level", "waterfall_max_level",
+                   "waterfall_auto_level_margin", "lfo_offset", "samp_rate", "fft_size", "fft_fps",
+                   "audio_compression", "fft_compression", "max_clients", "start_mod",
+                   "client_audio_buffer_size", "start_freq", "center_freq"]
     def __init__(self, conn):
         self.conn = conn
+
+        self.dsp = None
+        self.sdr = None
+        self.configProps = None
+
+        pm = PropertyManager.getSharedInstance()
+
+        self.setSdr()
+
+        # send receiver info
+        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)
+        self.write_receiver_details(receiver_details)
+
+        CpuUsageThread.getSharedInstance().add_client(self)
+
+    def sendConfig(self, key, value):
+        config = dict((key, self.configProps[key]) for key in OpenWebRxClient.config_keys)
+        # TODO mathematical properties? hmmmm
+        config["start_offset_freq"] = self.configProps["start_freq"] - self.configProps["center_freq"]
+        self.write_config(config)
+    def setSdr(self, id = None):
+        self.stopDsp()
+
+        if self.configProps is not None:
+            self.configProps.unwire(self.sendConfig)
+
+        self.sdr = SdrService.getSource(id)
+        self.sdr.start()
+
+        # send initial config
+        self.configProps = self.sdr.getProps().collect(*OpenWebRxClient.config_keys).defaults(PropertyManager.getSharedInstance())
+
+        self.configProps.wire(self.sendConfig)
+        self.sendConfig(None, None)
+
+        self.sdr.spectrumThread.add_client(self)
+
+    def startDsp(self):
+        if self.dsp is None:
+            self.dsp = DspManager(self, self.sdr)
+            self.dsp.start()
+
+    def stopDsp(self):
+        if self.dsp is not None:
+            self.dsp.stop()
+            self.dsp = None
+        if self.sdr is not None:
+            self.sdr.spectrumThread.remove_client(self)
+        # TODO: this should be disabled somehow, just not with the dsp
+        #CpuUsageThread.getSharedInstance().remove_client(self)
+
+    def setParams(self, params):
+        # only the keys in the protected property manager can be overridden from the web
+        protected = self.sdr.getProps().collect("samp_rate", "center_freq", "rf_gain", "type") \
+            .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.conn.send(bytes([0x01]) + data)
     def write_dsp_data(self, data):
@@ -90,8 +158,6 @@ class WebSocketMessageHandler(object):
         self.dsp = None
 
     def handleTextMessage(self, conn, message):
-        pm = PropertyManager.getSharedInstance()
-
         if (message[:16] == "SERVER DE CLIENT"):
             # maybe put some more info in there? nothing to store yet.
             self.handshake = "completed"
@@ -99,31 +165,6 @@ class WebSocketMessageHandler(object):
 
             self.client = OpenWebRxClient(conn)
 
-            config_keys = ["waterfall_colors", "waterfall_min_level", "waterfall_max_level",
-                           "waterfall_auto_level_margin", "lfo_offset", "samp_rate", "fft_size", "fft_fps",
-                           "audio_compression", "fft_compression", "max_clients", "start_mod",
-                           "client_audio_buffer_size", "start_freq", "center_freq"]
-
-            configProps = pm.collect(*config_keys)
-
-            def sendConfig(key, value):
-                config = dict((key, configProps[key]) for key in config_keys)
-                config["start_offset_freq"] = configProps["start_freq"] - configProps["center_freq"]
-                self.client.write_config(config)
-
-            configProps.wire(sendConfig)
-            sendConfig(None, None)
-
-            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)
-            self.client.write_receiver_details(receiver_details)
-
-            SpectrumThread.getSharedInstance().add_client(self.client)
-            CpuUsageThread.getSharedInstance().add_client(self.client)
-
-            self.dsp = DspManager(self.client)
-
             return
 
         if not self.handshake:
@@ -132,20 +173,23 @@ class WebSocketMessageHandler(object):
 
         try:
             message = json.loads(message)
+            if "type" in message:
                 if message["type"] == "dspcontrol":
+                    if "action" in message and message["action"] == "start":
+                        self.client.startDsp()
+
                     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()
+                        self.client.setDspProperties(params)
 
                 if message["type"] == "config":
-                for key, value in message["params"].items():
-                    # only the keys in the protected property manager can be overridden from the web
-                    protected = pm.collect("samp_rate", "center_freq", "rf_gain", "rtl_type")
-                    protected[key] = value
+                    if "params" in message:
+                        self.client.setParams(message["params"])
+                if message["type"] == "setsdr":
+                    if "params" in message:
+                        self.client.setSdr(message["params"]["sdr"])
+            else:
+                print("received message without type: {0}".format(message))
 
         except json.JSONDecodeError:
             print("message is not json: {0}".format(message))
@@ -155,10 +199,7 @@ class WebSocketMessageHandler(object):
 
     def handleClose(self, conn):
         if self.client:
-            SpectrumThread.getSharedInstance().remove_client(self.client)
-            CpuUsageThread.getSharedInstance().remove_client(self.client)
-        if self.dsp:
-            self.dsp.stop()
+            self.client.stopDsp()
 
 class WebSocketController(Controller):
     def handle_request(self):

owrx/source.py

@@ -6,8 +6,40 @@ import time
 import os
 import signal
 
-class RtlNmuxSource(object):
-    types = {
+class SdrService(object):
+    sdrProps = None
+    sources = {}
+    lastPort = None
+    @staticmethod
+    def getNextPort():
+        pm = PropertyManager.getSharedInstance()
+        (start, end) = pm["iq_port_range"]
+        if SdrService.lastPort is None:
+            SdrService.lastPort = start
+        else:
+            SdrService.lastPort += 1
+            if SdrService.lastPort > end:
+                raise IndexError("no more available ports to start more sdrs")
+        return SdrService.lastPort
+    @staticmethod
+    def getSource(id = None):
+        if SdrService.sdrProps is None:
+            pm = PropertyManager.getSharedInstance()
+            def loadIntoPropertyManager(dict: dict):
+                propertyManager = PropertyManager()
+                for (name, value) in dict.items():
+                    propertyManager[name] = value
+                return propertyManager
+            SdrService.sdrProps = dict((name, loadIntoPropertyManager(value)) for (name, value) in pm["sdrs"].items())
+            print(SdrService.sdrProps)
+        if id is None:
+            # TODO: configure default sdr in config? right now it will pick the first one off the list.
+            id = list(SdrService.sdrProps.keys())[0]
+        if not id in SdrService.sources:
+            SdrService.sources[id] = SdrSource(SdrService.sdrProps[id], SdrService.getNextPort())
+        return SdrService.sources[id]
+
+sdr_types = {
     "rtl_sdr": {
         "command": "rtl_sdr -s {samp_rate} -f {center_freq} -p {ppm} -g {rf_gain} -",
         "format_conversion": "csdr convert_u8_f"
@@ -23,30 +55,38 @@ class RtlNmuxSource(object):
     }
 }
 
-    def setup(self):
-        self.props = props = PropertyManager.getSharedInstance().collect(
-            "rtl_type", "samp_rate", "nmux_memory", "iq_server_port", "center_freq", "ppm",
-            "rf_gain", "lna_gain", "rf_amp"
-        )
+class SdrSource(object):
+    def __init__(self, props, port):
+        self.props = props
+        self.rtlProps = self.props.collect(
+            "type", "samp_rate", "nmux_memory", "center_freq", "ppm", "rf_gain", "lna_gain", "rf_amp"
+        ).defaults(PropertyManager.getSharedInstance())
 
         def restart(name, value):
-            print("restarting rtl source due to property change: {0} changed to {1}".format(name, value))
+            print("restarting sdr source due to property change: {0} changed to {1}".format(name, value))
             self.stop()
             self.start()
-        props.wire(restart)
+        self.rtlProps.wire(restart)
+        self.port = port
+        self.monitor = None
 
-        self.start()
+    def getProps(self):
+        return self.props
+
+    def getPort(self):
+        return self.port
 
     def start(self):
+        if self.monitor: return
 
-        props = self.props
+        props = self.rtlProps
 
         featureDetector = FeatureDetector()
-        if not featureDetector.is_available(props["rtl_type"]):
+        if not featureDetector.is_available(props["type"]):
             print("The RTL source type {0} is not available. please check requirements.".format(props["rtl_type"]))
             return
 
-        self.params = RtlNmuxSource.types[props["rtl_type"]]
+        self.params = sdr_types[props["type"]]
 
         start_sdr_command = self.params["command"].format(
             samp_rate = props["samp_rate"],
@@ -67,7 +107,7 @@ class RtlNmuxSource(object):
             print("[RtlNmuxSource] Error: nmux_bufsize or nmux_bufcnt is zero. These depend on nmux_memory and samp_rate options in config_webrx.py")
             return
         print("[RtlNmuxSource] nmux_bufsize = %d, nmux_bufcnt = %d" % (nmux_bufsize, nmux_bufcnt))
-        cmd = start_sdr_command + " | nmux --bufsize %d --bufcnt %d --port %d --address 127.0.0.1" % (nmux_bufsize, nmux_bufcnt, props["iq_server_port"])
+        cmd = start_sdr_command + " | nmux --bufsize %d --bufcnt %d --port %d --address 127.0.0.1" % (nmux_bufsize, nmux_bufcnt, self.port)
         self.process = subprocess.Popen(cmd, shell=True, preexec_fn=os.setpgrp)
         print("[RtlNmuxSource] Started rtl source: " + cmd)
 
@@ -75,38 +115,36 @@ class RtlNmuxSource(object):
         def wait_for_process_to_end():
             rc = self.process.wait()
             print("[RtlNmuxSource] shut down with RC={0}".format(rc))
+            self.monitor = None
 
         self.monitor = threading.Thread(target = wait_for_process_to_end)
         self.monitor.start()
 
+        self.spectrumThread = SpectrumThread(self)
+
     def stop(self):
         os.killpg(os.getpgid(self.process.pid), signal.SIGTERM)
         self.monitor.join()
         if "sleep" in self.params:
             time.sleep(self.params["sleep"])
 
-class SpectrumThread(threading.Thread):
-    sharedInstance = None
-    @staticmethod
-    def getSharedInstance():
-        if SpectrumThread.sharedInstance is None:
-            SpectrumThread.sharedInstance = SpectrumThread()
-            SpectrumThread.sharedInstance.start()
-        return SpectrumThread.sharedInstance
-
-    def __init__(self):
+class SpectrumThread(object):
+    def __init__(self, sdrSource):
         self.clients = []
-        self.doRun = True
-        super().__init__()
+        self.doRun = False
+        self.sdrSource = sdrSource
+
+    def start(self):
+        threading.Thread(target = self.run).start()
 
     def run(self):
-        props = PropertyManager.getSharedInstance().collect(
+        props = self.sdrSource.props.collect(
             "samp_rate", "fft_size", "fft_fps", "fft_voverlap_factor", "fft_compression",
-            "csdr_dynamic_bufsize", "csdr_print_bufsizes", "csdr_through", "iq_server_port"
-        )
+            "csdr_dynamic_bufsize", "csdr_print_bufsizes", "csdr_through"
+        ).defaults(PropertyManager.getSharedInstance())
 
         dsp = csdr.dsp()
-        dsp.nc_port = props["iq_server_port"]
+        dsp.nc_port = self.sdrSource.getPort()
         dsp.set_demodulator("fft")
         props.getProperty("samp_rate").wire(dsp.set_samp_rate)
         props.getProperty("fft_size").wire(dsp.set_fft_size)
@@ -146,26 +184,32 @@ class SpectrumThread(threading.Thread):
 
     def add_client(self, c):
         self.clients.append(c)
+        if not self.doRun:
+            self.doRun = True
+            self.start()
 
     def remove_client(self, c):
+        try:
             self.clients.remove(c)
+        except ValueError:
+            pass
         if not self.clients:
             self.shutdown()
 
     def shutdown(self):
         print("shutting down spectrum thread")
-        SpectrumThread.sharedInstance = None
         self.doRun = False
 
 class DspManager(object):
-    def __init__(self, handler):
+    def __init__(self, handler, sdrSource):
         self.doRun = True
         self.handler = handler
+        self.sdrSource = sdrSource
 
-        self.localProps = PropertyManager.getSharedInstance().collect(
+        self.localProps = self.sdrSource.getProps().collect(
             "audio_compression", "fft_compression", "digimodes_fft_size", "csdr_dynamic_bufsize",
-            "csdr_print_bufsizes", "csdr_through", "iq_server_port", "digimodes_enable", "samp_rate"
-        )
+            "csdr_print_bufsizes", "csdr_through", "digimodes_enable", "samp_rate"
+        ).defaults(PropertyManager.getSharedInstance())
 
         self.dsp = csdr.dsp()
         #dsp_initialized=False
@@ -175,7 +219,7 @@ class DspManager(object):
         self.dsp.set_bpf(-4000,4000)
         self.localProps.getProperty("digimodes_fft_size").wire(self.dsp.set_secondary_fft_size)
 
-        self.dsp.nc_port = self.localProps["iq_server_port"]
+        self.dsp.nc_port = self.sdrSource.getPort()
         self.dsp.csdr_dynamic_bufsize = self.localProps["csdr_dynamic_bufsize"]
         self.dsp.csdr_print_bufsizes = self.localProps["csdr_print_bufsizes"]
         self.dsp.csdr_through = self.localProps["csdr_through"]
@@ -322,7 +366,10 @@ class CpuUsageThread(threading.Thread):
         self.clients.append(c)
 
     def remove_client(self, c):
+        try:
             self.clients.remove(c)
+        except ValueError:
+            pass
         if not self.clients:
             self.shutdown()
 

server.py

@@ -1,7 +1,7 @@
 from http.server import HTTPServer
 from owrx.http import RequestHandler
 from owrx.config import PropertyManager, FeatureDetector, RequirementMissingException
-from owrx.source import RtlNmuxSource
+from owrx.source import SdrService
 from socketserver import ThreadingMixIn
 
 class ThreadedHttpServer(ThreadingMixIn, HTTPServer):
@@ -19,7 +19,7 @@ def main():
     pm = PropertyManager.getSharedInstance()
     for name, value in cfg.__dict__.items():
         if (name.startswith("__")): continue
-        pm.getProperty(name).setValue(value)
+        pm[name] = value
 
     featureDetector = FeatureDetector()
     if not featureDetector.is_available("core"):
@@ -28,9 +28,6 @@ def main():
         print(", ".join(featureDetector.get_requirements("core")))
         return
 
-    if (pm.getPropertyValue("start_rtl_thread")):
-        RtlNmuxSource().setup()
-
     server = ThreadedHttpServer(('0.0.0.0', pm.getPropertyValue("web_port")), RequestHandler)
     server.serve_forever()