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Implemented server side for digimodes

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This commit is contained in:
ha7ilm
2017-05-04 20:35:40 +02:00
parent 42b7bea839
commit 15a798cf5f
5 changed files with 88 additions and 32 deletions
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68
csdr.py
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@ -77,8 +77,8 @@ class dsp:
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 | csdr squelch_and_smeter_cc --fifo {squelch_pipe} --outfifo {smeter_pipe} 5 1 | "
if self.secondary_demodulator:
chain_begin+="tee {iqtee_pipe} | "
chain_begin+="tee {iqtee_pipe2} | "
chain_begin+="csdr tee {iqtee_pipe} | "
chain_begin+="csdr tee {iqtee2_pipe} | "
chain_end = ""
if self.audio_compression=="adpcm":
chain_end = " | csdr encode_ima_adpcm_i16_u8"
@ -90,16 +90,12 @@ class dsp:
secondary_chain_base="cat {input_pipe} | "
if which == "fft":
return secondary_chain_base+"csdr fft_cc {secondary_fft_size} {secondary_fft_block_size} | csdrr logpower_cf -70 | csdr fft_one_side_ff {secondary_fft_size}"
return secondary_chain_base+"csdr realpart_cf | csdr fft_fc {secondary_fft_size} {secondary_fft_block_size} | csdr logpower_cf -70 | csdr fft_one_side_ff {secondary_fft_size}" + (" | csdr compress_fft_adpcm_f_u8 {secondary_fft_size}" if self.fft_compression=="adpcm" else "")
elif which == "bpsk31":
return secondary_chain_base+"""csdr dsb_fc | \
csdr shift_addition_cc {secondary_shift_pipe} | \
csdr REM fir_decimate_cc {secondary_decimation} | \
return secondary_chain_base+"""csdr shift_addition_cc {secondary_shift_pipe} | \
csdr bandpass_fir_fft_cc -{secondary_bpf_cutoff} {secondary_bpf_cutoff} {secondary_bpf_transition_bw} HAMMING | \
csdr simple_agc_cc 0.0001 0.5 | \
csdr matched_filter_cc COSINE 48 | \
csdr timing_recovery_cc EARLYLATE {secondary_samples_per_bits} --add_q | \
CSDR_FIXED_BUFSIZE=1 csdr realpart_cf | \
CSDR_FIXED_BUFSIZE=1 csdr binary_slicer_f_u8 | \
CSDR_FIXED_BUFSIZE=1 csdr differential_decoder_u8_u8 | \
@ -112,37 +108,44 @@ CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8
def secondary_fft_block_size(self):
return (self.samp_rate/self.decimation)/self.fft_fps
def secondary_decimation(self, which):
return 1
def secondary_decimation(self):
return 1 #currently unused
def secondary_bpf_cutoff(self, which):
def secondary_bpf_cutoff(self):
if self.secondary_demodulator == "bpsk31":
return 31.25 / self.if_samp_rate()
return (31.25/2) / self.if_samp_rate()
return 0
def secondary_bpf_transition_bw(self, which):
def secondary_bpf_transition_bw(self):
if self.secondary_demodulator == "bpsk31":
return (31.25 / 2) * self.if_samp_rate()
return (31.25/2) / self.if_samp_rate()
return 0
def secondary_samples_per_bits(self):
if self.secondary_demodulator == "bpsk31":
return int(round(self.if_samp_rate()/31.25))
return 0
def start_secondary_demodulator(self):
if(not self.secondary_demodulator): return
secondary_command_fft=secondary_chain("fft")
print "[openwebrx] starting secondary demodulator from IF input sampled at %d"%self.if_samp_rate()
secondary_command_fft=self.secondary_chain("fft")
secondary_command_demod=self.secondary_chain(self.secondary_demodulator)
self.try_create_pipes(self.secondary_pipe_names, secondary_command_demod + secondary_command_fft)
secondary_command_fft=secondary_command_fft.format( \
input_pipe=self.iqtee_pipe, \
secondary_fft_size=self.secondary_fft_size, \
secondary_fft_block_size=self.secondary_fft_block_size(), \
)
secondary_command_demod=self.secondary_chain(self.secondary_demodulator)
secondary_command_demod.format( \
secondary_command_demod=secondary_command_demod.format( \
input_pipe=self.iqtee2_pipe, \
secondary_shift_pipe=self.secondary_shift_pipe, \
secondary_decimation=self.secondary_decimation(self.secondary_demodulator), \
secondary_samples_per_bits=self.secondary_samples_per_bits(self.secondary_demodulator), \
secondary_bpf_cutoff=self.secondary_bpf_cutoff(self.secondary_demodulator), \
secondary_bpf_transition_bw=self.secondary_bpf_transition_bw(self.secondary_demodulator)
secondary_decimation=self.secondary_decimation(), \
secondary_samples_per_bits=self.secondary_samples_per_bits(), \
secondary_bpf_cutoff=self.secondary_bpf_cutoff(), \
secondary_bpf_transition_bw=self.secondary_bpf_transition_bw()
)
try_create_pipes(secondary_command_demod + secondary_command_fft, self.secondary_pipe_names)
print "[openwebrx-dsp-plugin:csdr] secondary command (fft) =", secondary_command_fft
print "[openwebrx-dsp-plugin:csdr] secondary command (demod) =", secondary_command_demod
@ -151,7 +154,9 @@ CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8
#if self.csdr_dynamic_bufsize: my_env["CSDR_DYNAMIC_BUFSIZE_ON"]="1";
if self.csdr_print_bufsizes: my_env["CSDR_PRINT_BUFSIZES"]="1";
self.secondary_process_fft = subprocess.Popen(secondary_command_fft, stdout=subprocess.PIPE, shell=True, preexec_fn=os.setpgrp, env=my_env)
print "[openwebrx-dsp-plugin:csdr] Popen on secondary command (fft)"
self.secondary_process_demod = subprocess.Popen(secondary_command_demod, stdout=subprocess.PIPE, shell=True, preexec_fn=os.setpgrp, env=my_env)
print "[openwebrx-dsp-plugin:csdr] Popen on secondary command (demod)"
self.secondary_processes_running = True
#open control pipes for csdr and send initialization data
@ -159,6 +164,9 @@ CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8
self.secondary_shift_pipe_file=open(self.secondary_shift_pipe,"w")
self.set_secondary_offset_freq(self.secondary_offset_freq)
self.set_pipe_nonblocking(self.secondary_process_demod.stdout)
self.set_pipe_nonblocking(self.secondary_process_fft.stdout)
def set_secondary_offset_freq(self, value):
self.secondary_offset_freq=value
if self.secondary_processes_running:
@ -178,6 +186,9 @@ CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8
def read_secondary_fft(self, size):
return self.secondary_process_fft.stdout.read(size)
def get_secondary_demodulator(self):
return self.secondary_demodulator
def set_audio_compression(self,what):
self.audio_compression = what
@ -188,6 +199,10 @@ CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8
if self.fft_compression=="none": return self.fft_size*4
if self.fft_compression=="adpcm": return (self.fft_size/2)+(10/2)
def get_secondary_fft_bytes_to_read(self):
if self.fft_compression=="none": return self.secondary_fft_size*4
if self.fft_compression=="adpcm": return (self.secondary_fft_size/2)+(10/2)
def set_samp_rate(self,samp_rate):
#to change this, restart is required
self.samp_rate=samp_rate
@ -273,7 +288,9 @@ CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8
return self.ddc_transition_bw_rate*(self.if_samp_rate()/float(self.samp_rate))
def try_create_pipes(self, pipe_names, command_base):
print "try_create_pipes"
for pipe_name in pipe_names:
print "\t"+pipe_name
if "{"+pipe_name+"}" in command_base:
setattr(self, pipe_name, self.pipe_base_path+pipe_name)
self.mkfifo(getattr(self, pipe_name))
@ -287,6 +304,9 @@ CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8
try: os.unlink(pipe_path)
except: print "[openwebrx-dsp-plugin:csdr] try_delete_pipes() :: unlink failed: " + pipe_path
def set_pipe_nonblocking(self, pipe):
flags = fcntl.fcntl(pipe, fcntl.F_GETFL)
fcntl.fcntl(pipe, fcntl.F_SETFL, flags | os.O_NONBLOCK)
def start(self):
command_base=self.chain(self.demodulator)
@ -321,7 +341,7 @@ CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8
last_decimation=self.last_decimation, fft_size=self.fft_size, fft_block_size=self.fft_block_size(), fft_averages=self.fft_averages, \
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, \
squelch_pipe=self.squelch_pipe, smeter_pipe=self.smeter_pipe )
squelch_pipe=self.squelch_pipe, smeter_pipe=self.smeter_pipe, iqtee_pipe=self.iqtee_pipe, iqtee2_pipe=self.iqtee2_pipe )
print "[openwebrx-dsp-plugin:csdr] Command =",command
#code.interact(local=locals())
@ -343,7 +363,7 @@ CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8
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)
self.set_pipe_nonblocking(self.smeter_pipe_file)
self.start_secondary_demodulator()