joachim/openwebrx-clone
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This commit is contained in:
Jakob Ketterl 2019-09-13 23:03:05 +02:00
parent 8d47259f78
commit 98f1545fca
5 changed files with 35 additions and 53 deletions
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46
owrx/aprs.py
View File

@ -14,9 +14,12 @@ knotsToKilometers = 1.852
feetToMeters = 0.3048
milesToKilometers = 1.609344
inchesToMilimeters = 25.4
def fahrenheitToCelsius(f):
return (f - 32) * 5 / 9
# not sure what the correct encoding is. it seems TAPR has set utf-8 as a standard, but not everybody is following it.
encoding = "utf-8"
@ -63,7 +66,7 @@ class Ax25Parser(object):
class WeatherMapping(object):
def __init__(self, char, key, length, scale = None):
def __init__(self, char, key, length, scale=None):
self.char = char
self.key = key
self.length = length
@ -81,14 +84,15 @@ class WeatherMapping(object):
deepApply(obj[keys[0]], ".".join(keys[1:]), v)
else:
obj[key] = v
try:
value = int(input[1:1 + self.length])
value = int(input[1 : 1 + self.length])
if self.scale:
value = self.scale(value)
deepApply(weather, self.key, value)
except ValueError:
pass
remain = input[1 + self.length:]
remain = input[1 + self.length :]
return weather, remain
@ -102,7 +106,7 @@ class WeatherParser(object):
WeatherMapping("p", "rain.day", 3, lambda x: x / 100 * inchesToMilimeters),
WeatherMapping("P", "rain.sincemidnight", 3, lambda x: x / 100 * inchesToMilimeters),
WeatherMapping("h", "humidity", 2),
WeatherMapping("b", "barometricpressure", 5, lambda x: x/10),
WeatherMapping("b", "barometricpressure", 5, lambda x: x / 10),
WeatherMapping("s", "snowfall", 3, lambda x: x * 25.4),
]
@ -172,9 +176,7 @@ class AprsParser(object):
if "type" in mapData and mapData["type"] == "thirdparty" and "data" in mapData:
mapData = mapData["data"]
if "lat" in mapData and "lon" in mapData:
loc = LatLngLocation(
mapData["lat"], mapData["lon"], mapData["comment"] if "comment" in mapData else None
)
loc = LatLngLocation(mapData["lat"], mapData["lon"], mapData["comment"] if "comment" in mapData else None)
source = mapData["source"]
if "type" in mapData:
if mapData["type"] == "item":
@ -290,7 +292,7 @@ class AprsParser(object):
index = filtered[0]
result["item"] = information[0:index]
result["live"] = information[index] == "!"
result.update(self.parseRegularAprsData(information[index + 1:]))
result.update(self.parseRegularAprsData(information[index + 1 :]))
# override type, losing information about compression
result["type"] = "item"
return result
@ -320,20 +322,17 @@ class AprsParser(object):
logger.debug(matches)
path = matches.group(2).split(",")
destination = next((c.strip("*").upper() for c in path if c.endswith("*")), None)
data = self.parseAprsData({
"source": matches.group(1).upper(),
"destination": destination,
"path": path,
"data": matches.group(6).encode(encoding)
})
return {
"type": "thirdparty",
"data": data,
}
data = self.parseAprsData(
{
"source": matches.group(1).upper(),
"destination": destination,
"path": path,
"data": matches.group(6).encode(encoding),
}
)
return {"type": "thirdparty", "data": data}
return {
"type": "thirdparty",
}
return {"type": "thirdparty"}
def parseRegularAprsData(self, information):
if self.hasCompressedCoordinates(information):
@ -384,10 +383,7 @@ class AprsParser(object):
weather = {}
if len(comment) > 6 and comment[3] == "/":
try:
weather["wind"] = {
"direction": int(comment[0:3]),
"speed": int(comment[4:7]) * milesToKilometers,
}
weather["wind"] = {"direction": int(comment[0:3]), "speed": int(comment[4:7]) * milesToKilometers}
except ValueError:
pass
comment = comment[7:]

4
owrx/metrics.py
View File

@ -11,9 +11,7 @@ class CounterMetric(Metric):
self.counter += increment
def getValue(self):
return {
"count": self.counter,
}
return {"count": self.counter}
class DirectMetric(Metric):

22
owrx/service.py
View File

@ -131,16 +131,15 @@ class ServiceHandler(object):
def optimizeResampling(self, freqs, bandwidth):
freqs = sorted(freqs, key=lambda f: f["frequency"])
distances = [{
"frequency": freqs[i]["frequency"],
"distance": freqs[i+1]["frequency"] - freqs[i]["frequency"],
} for i in range(0, len(freqs)-1)]
distances = [
{"frequency": freqs[i]["frequency"], "distance": freqs[i + 1]["frequency"] - freqs[i]["frequency"]}
for i in range(0, len(freqs) - 1)
]
distances = [d for d in distances if d["distance"] > 0]
distances = sorted(distances, key=lambda f: f["distance"], reverse=True)
def calculate_usage(num_splits):
splits = sorted([f["frequency"] for f in distances[0:num_splits]])
previous = 0
@ -156,20 +155,11 @@ class ServiceHandler(object):
return bandwidth + len(group) * (freqs[-1] - freqs[0] + 24000)
total_bandwidth = sum([get_bandwitdh(group) for group in groups])
return {
"num_splits": num_splits,
"total_bandwidth": total_bandwidth,
"groups": groups,
}
return {"num_splits": num_splits, "total_bandwidth": total_bandwidth, "groups": groups}
usages = [calculate_usage(i) for i in range(0, len(freqs))]
# this is simulating no resampling. i haven't seen this as the best result yet
usages += [{
"num_splits": None,
"total_bandwidth": bandwidth * len(freqs),
"groups": [freqs]
}]
usages += [{"num_splits": None, "total_bandwidth": bandwidth * len(freqs), "groups": [freqs]}]
results = sorted(usages, key=lambda f: f["total_bandwidth"])
for r in results:

11
owrx/source.py
View File

@ -299,8 +299,7 @@ class Resampler(SdrSource):
"nc -v 127.0.0.1 {nc_port}".format(nc_port=self.sdr.getPort()),
"csdr shift_addition_cc {shift}".format(shift=self.shift),
"csdr fir_decimate_cc {decimation} {ddc_transition_bw} HAMMING".format(
decimation=self.decimation,
ddc_transition_bw=self.transition_bw,
decimation=self.decimation, ddc_transition_bw=self.transition_bw
),
]
@ -316,11 +315,9 @@ class Resampler(SdrSource):
self.modificationLock.release()
return
logger.debug("nmux_bufsize = %d, nmux_bufcnt = %d" % (nmux_bufsize, nmux_bufcnt))
resampler_command += ["nmux --bufsize %d --bufcnt %d --port %d --address 127.0.0.1" % (
nmux_bufsize,
nmux_bufcnt,
self.port,
)]
resampler_command += [
"nmux --bufsize %d --bufcnt %d --port %d --address 127.0.0.1" % (nmux_bufsize, nmux_bufcnt, self.port)
]
cmd = " | ".join(resampler_command)
logger.debug("resampler command: %s", cmd)
self.process = subprocess.Popen(cmd, shell=True, preexec_fn=os.setpgrp)

5
owrx/wsjt.py
View File

@ -134,7 +134,9 @@ class WsjtChopper(threading.Thread):
return []
def decode(self, file):
decoder = subprocess.Popen(self.decoder_commandline(file), stdout=subprocess.PIPE, cwd=self.tmp_dir, preexec_fn=lambda : os.nice(10))
decoder = subprocess.Popen(
self.decoder_commandline(file), stdout=subprocess.PIPE, cwd=self.tmp_dir, preexec_fn=lambda: os.nice(10)
)
while True:
line = decoder.stdout.readline()
if line is None or (isinstance(line, bytes) and len(line) == 0):
@ -281,7 +283,6 @@ class WsjtParser(object):
metric.inc()
def parse_from_jt9(self, msg):
# ft8 sample
# '222100 -15 -0.0 508 ~ CQ EA7MJ IM66'