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Added S-meter

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This commit is contained in:
ha7ilm
2016-03-20 16:06:10 +01:00
parent 06bd8b92aa
commit 34bd5cceab
5 changed files with 183 additions and 73 deletions
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85
plugins/dsp/csdr/plugin.py
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@ -1,7 +1,7 @@
"""
OpenWebRX csdr plugin: do the signal processing with csdr
This file is part of OpenWebRX,
This file is part of OpenWebRX,
an open-source SDR receiver software with a web UI.
Copyright (c) 2013-2015 by Andras Retzler <randras@sdr.hu>
@ -25,6 +25,7 @@ import time
import os
import code
import signal
import fcntl
class dsp_plugin:
@ -49,20 +50,21 @@ class dsp_plugin:
self.csdr_dynamic_bufsize = False
self.csdr_print_bufsizes = False
self.csdr_through = False
self.squelch_level = 0
def chain(self,which):
any_chain_base="ncat -v 127.0.0.1 {nc_port} | "
if self.csdr_dynamic_bufsize: any_chain_base+="csdr setbuf {start_bufsize} | "
if self.csdr_through: any_chain_base+="csdr through | "
any_chain_base+=self.format_conversion+(" | " if self.format_conversion!="" else "") ##"csdr flowcontrol {flowcontrol} auto 1.5 10 | "
if which == "fft":
if which == "fft":
fft_chain_base = any_chain_base+"csdr fft_cc {fft_size} {fft_block_size} | csdr logpower_cf -70 | csdr fft_exchange_sides_ff {fft_size}"
if self.fft_compression=="adpcm":
return fft_chain_base+" | csdr compress_fft_adpcm_f_u8 {fft_size}"
else:
return fft_chain_base
chain_begin=any_chain_base+"csdr shift_addition_cc --fifo {shift_pipe} | csdr fir_decimate_cc {decimation} {ddc_transition_bw} HAMMING | csdr bandpass_fir_fft_cc --fifo {bpf_pipe} {bpf_transition_bw} HAMMING | "
chain_end = ""
chain_begin=any_chain_base+"csdr shift_addition_cc --fifo {shift_pipe} | csdr fir_decimate_cc {decimation} {ddc_transition_bw} HAMMING | csdr bandpass_fir_fft_cc --fifo {bpf_pipe} {bpf_transition_bw} HAMMING | csdr squelch_and_smeter_cc --fifo {squelch_pipe} --outfifo {smeter_pipe} 5 1 | "
chain_end = ""
if self.audio_compression=="adpcm":
chain_end = " | csdr encode_ima_adpcm_i16_u8"
if which == "nfm": return chain_begin + "csdr fmdemod_quadri_cf | csdr limit_ff | csdr fractional_decimator_ff {last_decimation} | csdr deemphasis_nfm_ff 11025 | csdr fastagc_ff 1024 | csdr convert_f_i16"+chain_end
@ -92,7 +94,7 @@ class dsp_plugin:
def get_name(self):
return self.name
def get_output_rate(self):
return self.output_rate
@ -114,7 +116,7 @@ class dsp_plugin:
def set_fft_fps(self,fft_fps):
#to change this, restart is required
self.fft_fps=fft_fps
def fft_block_size(self):
return self.samp_rate/self.fft_fps
@ -123,48 +125,66 @@ class dsp_plugin:
def set_offset_freq(self,offset_freq):
self.offset_freq=offset_freq
if self.running:
if self.running:
self.shift_pipe_file.write("%g\n"%(-float(self.offset_freq)/self.samp_rate))
self.shift_pipe_file.flush()
def set_bpf(self,low_cut,high_cut):
self.low_cut=low_cut
self.high_cut=high_cut
if self.running:
if self.running:
self.bpf_pipe_file.write( "%g %g\n"%(float(self.low_cut)/self.if_samp_rate(), float(self.high_cut)/self.if_samp_rate()) )
self.bpf_pipe_file.flush()
def get_bpf(self):
return [self.low_cut, self.high_cut]
def set_squelch_level(self, squelch_level):
self.squelch_level=squelch_level
if self.running:
self.squelch_pipe_file.write( "%g\n"%(float(self.squelch_level)) )
self.squelch_pipe_file.flush()
def get_smeter_level(self):
if self.running:
line=self.smeter_pipe_file.readline()
return float(line[:-1])
def mkfifo(self,path):
try:
os.unlink(path)
except:
pass
os.mkfifo(path)
os.mkfifo(path)
def ddc_transition_bw(self):
return self.ddc_transition_bw_rate*(self.if_samp_rate()/float(self.samp_rate))
def start(self):
command_base=self.chain(self.demodulator)
#create control pipes for csdr
pipe_base_path="/tmp/openwebrx_pipe_{myid}_".format(myid=id(self))
self.bpf_pipe = self.shift_pipe = None
self.bpf_pipe = self.shift_pipe = self.squelch_pipe = self.smeter_pipe = None
if "{bpf_pipe}" in command_base:
self.bpf_pipe=pipe_base_path+"bpf"
self.mkfifo(self.bpf_pipe)
if "{shift_pipe}" in command_base:
self.shift_pipe=pipe_base_path+"shift"
self.mkfifo(self.shift_pipe)
if "{squelch_pipe}" in command_base:
self.squelch_pipe=pipe_base_path+"squelch"
self.mkfifo(self.squelch_pipe)
if "{smeter_pipe}" in command_base:
self.smeter_pipe=pipe_base_path+"smeter"
self.mkfifo(self.smeter_pipe)
#run the command
command=command_base.format( bpf_pipe=self.bpf_pipe, shift_pipe=self.shift_pipe, decimation=self.decimation, \
last_decimation=self.last_decimation, fft_size=self.fft_size, fft_block_size=self.fft_block_size(), \
bpf_transition_bw=float(self.bpf_transition_bw)/self.if_samp_rate(), ddc_transition_bw=self.ddc_transition_bw(), \
flowcontrol=int(self.samp_rate*2), start_bufsize=self.base_bufsize*self.decimation, nc_port=self.nc_port)
flowcontrol=int(self.samp_rate*2), start_bufsize=self.base_bufsize*self.decimation, nc_port=self.nc_port, \
squelch_pipe=self.squelch_pipe, smeter_pipe=self.smeter_pipe )
print "[openwebrx-dsp-plugin:csdr] Command =",command
#code.interact(local=locals())
@ -175,35 +195,43 @@ class dsp_plugin:
self.running = True
#open control pipes for csdr and send initialization data
if self.bpf_pipe != None:
if self.bpf_pipe != None:
self.bpf_pipe_file=open(self.bpf_pipe,"w")
self.set_bpf(self.low_cut,self.high_cut)
if self.shift_pipe != None:
if self.shift_pipe != None:
self.shift_pipe_file=open(self.shift_pipe,"w")
self.set_offset_freq(self.offset_freq)
if self.squelch_pipe != None:
self.squelch_pipe_file=open(self.squelch_pipe,"w")
self.set_squelch_level(self.squelch_level)
if self.smeter_pipe != None:
self.smeter_pipe_file=open(self.smeter_pipe,"r")
fcntl.fcntl(self.smeter_pipe_file, fcntl.F_SETFL, os.O_NONBLOCK)
def read(self,size):
return self.process.stdout.read(size)
def stop(self):
os.killpg(os.getpgid(self.process.pid), signal.SIGTERM)
os.killpg(os.getpgid(self.process.pid), signal.SIGTERM)
#if(self.process.poll()!=None):return # returns None while subprocess is running
#while(self.process.poll()==None):
# #self.process.kill()
# print "killproc",os.getpgid(self.process.pid),self.process.pid
# os.killpg(self.process.pid, signal.SIGTERM)
#
# os.killpg(self.process.pid, signal.SIGTERM)
#
# time.sleep(0.1)
if self.bpf_pipe:
try:
os.unlink(self.bpf_pipe)
except:
print "[openwebrx-dsp-plugin:csdr] stop() :: unlink failed: " + self.bpf_pipe
try: os.unlink(self.bpf_pipe)
except: print "[openwebrx-dsp-plugin:csdr] stop() :: unlink failed: " + self.bpf_pipe
if self.shift_pipe:
try:
os.unlink(self.shift_pipe)
except:
print "[openwebrx-dsp-plugin:csdr] stop() :: unlink failed: " + self.bpf_pipe
try: os.unlink(self.shift_pipe)
except: print "[openwebrx-dsp-plugin:csdr] stop() :: unlink failed: " + self.shift_pipe
if self.squelch_pipe:
try: os.unlink(self.squelch_pipe)
except: print "[openwebrx-dsp-plugin:csdr] stop() :: unlink failed: " + self.squelch_pipe
if self.smeter_pipe:
try: os.unlink(self.smeter_pipe)
except: print "[openwebrx-dsp-plugin:csdr] stop() :: unlink failed: " + self.smeter_pipe
self.running = False
def restart(self):
@ -213,4 +241,3 @@ class dsp_plugin:
def __del__(self):
self.stop()
del(self.process)