Merged feature/digitalmods

.gitignore

@@ -1 +1,3 @@
 *.pyc
+*.swp
+tags

README.md

@@ -3,16 +3,19 @@ OpenWebRX
 
 OpenWebRX is a multi-user SDR receiver software with a web interface.
 
-![OpenWebRX](/screenshot.png?raw=true)
+![OpenWebRX](http://blog.sdr.hu/images/openwebrx/screenshot.png)
 
 It has the following features:
 
-- <a href="https://github.com/simonyiszk/csdr">libcsdr</a> based demodulators (AM/FM/SSB),
+- <a href="https://github.com/simonyiszk/csdr">csdr</a> based demodulators (AM/FM/SSB/CW/BPSK31),
 - filter passband can be set from GUI,
 - waterfall display can be shifted back in time,
-- it extensively uses HTML5 features like WebSocket, Web Audio API, and &lt;canvas&gt;.
+- it extensively uses HTML5 features like WebSocket, Web Audio API, and &lt;canvas&gt;,
 - it works in Google Chrome, Chromium (above version 37) and Mozilla Firefox (above version 28),
 - currently supports RTL-SDR, HackRF, SDRplay, AirSpy and many other devices, see the <a href="https://github.com/simonyiszk/openwebrx/wiki/">OpenWebRX Wiki</a>.
+- it has a 3D waterfall display:
+
+![OpenWebRX 3D waterfall](http://blog.sdr.hu/images/openwebrx/screenshot-3d.gif)
 
 **News (2015-08-18)**
 - My BSc. thesis written on OpenWebRX is <a href="http://openwebrx.org/bsc-thesis.pdf">available here.</a>
@@ -32,13 +35,16 @@ It has the following features:
 - *ncat* has been replaced with a custom implementation called *nmux* due to a bug that caused regular crashes on some machines. The *nmux* tool is part of the *csdr* package.
 - Most consumer SDR devices are supported via <a href="https://github.com/rxseger/rx_tools">rx_tools</a>, see the <a href="https://github.com/simonyiszk/openwebrx/wiki/Using-rx_tools-with-OpenWebRX">OpenWebRX Wiki</a> on that.
 
+**News (2017-07-07)**
+- OpenWebRX now has a BPSK31 demodulator and a 3D waterfall display.
+
 > When upgrading OpenWebRX, please make sure that you also upgrade *csdr*!
 
 ## OpenWebRX servers on SDR.hu
 
 [SDR.hu](http://sdr.hu) is a site which lists the active, public OpenWebRX servers. Your receiver [can also be part of it](http://sdr.hu/openwebrx), if you want.
 
-![sdr.hu](/screenshot-sdrhu.png?raw=true)
+![sdr.hu](http://blog.sdr.hu/images/openwebrx/screenshot-sdrhu.png)
 
 ## Setup
 

config_webrx.py

@@ -67,19 +67,22 @@ sdrhu_key = ""
 sdrhu_public_listing = False
 
 # ==== DSP/RX settings ====
-dsp_plugin="csdr"
 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 = 250000
-center_freq = 145525000
+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"
 
+digimodes_enable=True #Decoding digimodes come with higher CPU usage. 
+digimodes_fft_size=1024
+
 start_rtl_thread=True
 
 """
@@ -104,7 +107,9 @@ Note: if you experience audio underruns while CPU usage is 100%, you can:
 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)
 format_conversion="csdr convert_u8_f"
 
-#start_rtl_command="hackrf_transfer -s {samp_rate} -f {center_freq} -g {rf_gain} -l16 -a0 -q -r-".format(rf_gain=rf_gain, center_freq=center_freq, samp_rate=samp_rate, ppm=ppm)
+#lna_gain=8
+#rf_amp=1
+#start_rtl_command="hackrf_transfer -s {samp_rate} -f {center_freq} -g {rf_gain} -l{lna_gain} -a{rf_amp} -r-".format(rf_gain=rf_gain, center_freq=center_freq, samp_rate=samp_rate, ppm=ppm, rf_amp=rf_amp, lna_gain=lna_gain)
 #format_conversion="csdr convert_s8_f"
 """
 To use a HackRF, compile the HackRF host tools from its "stdout" branch:
@@ -127,9 +132,9 @@ To use a HackRF, compile the HackRF host tools from its "stdout" branch:
 #format_conversion="csdr convert_s16_f | csdr gain_ff 30"
 
 # >> /dev/urandom test signal source
-#samp_rate = 2400000
+# samp_rate = 2400000
-#start_rtl_command="cat /dev/urandom | (pv -qL `python -c 'print int({samp_rate} * 2.2)'` 2>&1)".format(rf_gain=rf_gain, center_freq=center_freq, samp_rate=samp_rate)
+# start_rtl_command="cat /dev/urandom | (pv -qL `python -c 'print int({samp_rate} * 2.2)'` 2>&1)".format(rf_gain=rf_gain, center_freq=center_freq, samp_rate=samp_rate)
-#format_conversion="csdr convert_u8_f"
+# format_conversion="csdr convert_u8_f"
 
 # >> Pre-recorded raw I/Q file as signal source
 # You will have to correctly specify: samp_rate, center_freq, format_conversion in order to correctly play an I/Q file.
@@ -188,9 +193,14 @@ waterfall_auto_level_margin = (5, 40)
 #   ___|____________________________________|____________________________________|____________________________________|___> signal power
 #        \_waterfall_auto_level_margin[0]_/ |__ current_min_power_level          | \_waterfall_auto_level_margin[1]_/
 #                                                      current_max_power_level __|
-# ==== Experimental settings ===
 
-#Warning! These are very experimental.
+# 3D view settings
+mathbox_waterfall_frequency_resolution = 128 #bins
+mathbox_waterfall_history_length = 10 #seconds
+mathbox_waterfall_colors = "[0x000000ff,0x2e6893ff, 0x69a5d0ff, 0x214b69ff, 0x9dc4e0ff,  0xfff775ff, 0xff8a8aff, 0xb20000ff]"
+
+# === Experimental settings ===
+#Warning! The settings below are very experimental.
 csdr_dynamic_bufsize = False # This allows you to change the buffering mode of csdr.
 csdr_print_bufsizes = False  # This prints the buffer sizes used for csdr processes.
 csdr_through = False # Setting this True will print out how much data is going into the DSP chains.

csdr.py

@@ -0,0 +1,424 @@
+"""
+OpenWebRX csdr plugin: do the signal processing with csdr
+
+    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>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation, either version 3 of the
+    License, or (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+
+import subprocess
+import time
+import os
+import code
+import signal
+import fcntl
+
+class dsp:
+
+    def __init__(self):
+        self.samp_rate = 250000
+        self.output_rate = 11025 #this is default, and cannot be set at the moment
+        self.fft_size = 1024
+        self.fft_fps = 5
+        self.offset_freq = 0
+        self.low_cut = -4000
+        self.high_cut = 4000
+        self.bpf_transition_bw = 320 #Hz, and this is a constant
+        self.ddc_transition_bw_rate = 0.15 # of the IF sample rate
+        self.running = False
+        self.secondary_processes_running = False
+        self.audio_compression = "none"
+        self.fft_compression = "none"
+        self.demodulator = "nfm"
+        self.name = "csdr"
+        self.format_conversion = "csdr convert_u8_f"
+        self.base_bufsize = 512
+        self.nc_port = 4951
+        self.csdr_dynamic_bufsize = False
+        self.csdr_print_bufsizes = False
+        self.csdr_through = False
+        self.squelch_level = 0
+        self.fft_averages = 50
+        self.iqtee = False
+        self.iqtee2 = False
+        self.secondary_demodulator = None
+        self.secondary_fft_size = 1024
+        self.secondary_process_fft = None
+        self.secondary_process_demod = None
+        self.pipe_names=["bpf_pipe", "shift_pipe", "squelch_pipe", "smeter_pipe", "iqtee_pipe", "iqtee2_pipe"]
+        self.secondary_pipe_names=["secondary_shift_pipe"]
+        self.secondary_offset_freq = 1000
+
+    def chain(self,which):
+        any_chain_base="nc -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":
+            fft_chain_base = any_chain_base+"csdr fft_cc {fft_size} {fft_block_size} | " + \
+                ("csdr logpower_cf -70 | " if self.fft_averages == 0 else "csdr logaveragepower_cf -70 {fft_size} {fft_averages} | ") + \
+                "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 | csdr squelch_and_smeter_cc --fifo {squelch_pipe} --outfifo {smeter_pipe} 5 1 | "
+        if self.secondary_demodulator:
+            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"
+        if which == "nfm": return chain_begin + "csdr fmdemod_quadri_cf | csdr limit_ff | csdr old_fractional_decimator_ff {last_decimation} | csdr deemphasis_nfm_ff 11025 | csdr fastagc_ff 1024 | csdr convert_f_s16"+chain_end
+        elif which == "am": return chain_begin + "csdr amdemod_cf | csdr fastdcblock_ff | csdr old_fractional_decimator_ff {last_decimation} | csdr agc_ff | csdr limit_ff | csdr convert_f_s16"+chain_end
+        elif which == "ssb": return chain_begin + "csdr realpart_cf | csdr old_fractional_decimator_ff {last_decimation} | csdr agc_ff | csdr limit_ff | csdr convert_f_s16"+chain_end
+
+    def secondary_chain(self, which):
+        secondary_chain_base="cat {input_pipe} | "
+        if which == "fft":
+            return secondary_chain_base+"csdr realpart_cf | csdr fft_fc {secondary_fft_input_size} {secondary_fft_block_size} | csdr logpower_cf -70 " + (" | csdr compress_fft_adpcm_f_u8 {secondary_fft_size}" if self.fft_compression=="adpcm" else "")
+        elif which == "bpsk31":
+            return secondary_chain_base + "csdr shift_addition_cc --fifo {secondary_shift_pipe} | " + \
+                    "csdr bandpass_fir_fft_cc $(csdr '=-(31.25)/{if_samp_rate}') $(csdr '=(31.25)/{if_samp_rate}') $(csdr '=31.25/{if_samp_rate}') | " + \
+                    "csdr simple_agc_cc 0.001 0.5 | " + \
+                    "csdr timing_recovery_cc GARDNER {secondary_samples_per_bits} 0.5 2 --add_q | " + \
+                    "CSDR_FIXED_BUFSIZE=1 csdr dbpsk_decoder_c_u8 | " + \
+                    "CSDR_FIXED_BUFSIZE=1 csdr psk31_varicode_decoder_u8_u8"
+
+    def set_secondary_demodulator(self, what):
+        self.secondary_demodulator = what
+
+    def secondary_fft_block_size(self):
+        return (self.samp_rate/self.decimation)/(self.fft_fps*2) #*2 is there because we do FFT on real signal here
+
+    def secondary_decimation(self):
+        return 1 #currently unused
+
+    def secondary_bpf_cutoff(self):
+        if self.secondary_demodulator == "bpsk31":
+             return (31.25/2) / self.if_samp_rate()
+        return 0
+
+    def secondary_bpf_transition_bw(self):
+        if self.secondary_demodulator == "bpsk31":
+            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))&~3
+        return 0
+
+    def secondary_bw(self):
+        if self.secondary_demodulator == "bpsk31":
+            return 31.25
+
+    def start_secondary_demodulator(self):
+        if(not self.secondary_demodulator): return
+        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_input_size=self.secondary_fft_size, \
+            secondary_fft_size=self.secondary_fft_size, \
+            secondary_fft_block_size=self.secondary_fft_block_size(), \
+            )
+        secondary_command_demod=secondary_command_demod.format( \
+            input_pipe=self.iqtee2_pipe, \
+            secondary_shift_pipe=self.secondary_shift_pipe, \
+            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(), \
+            if_samp_rate=self.if_samp_rate()
+            )
+
+        print "[openwebrx-dsp-plugin:csdr] secondary command (fft) =", secondary_command_fft
+        print "[openwebrx-dsp-plugin:csdr] secondary command (demod) =", secondary_command_demod
+        #code.interact(local=locals())
+        my_env=os.environ.copy()
+        #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) #TODO digimodes
+        print "[openwebrx-dsp-plugin:csdr] Popen on secondary command (demod)" #TODO digimodes
+        self.secondary_processes_running = True
+
+        #open control pipes for csdr and send initialization data
+        # print "==========> 1"
+        if self.secondary_shift_pipe != None: #TODO digimodes
+            # print "==========> 2", self.secondary_shift_pipe
+            self.secondary_shift_pipe_file=open(self.secondary_shift_pipe,"w") #TODO digimodes
+            # print "==========> 3"
+            self.set_secondary_offset_freq(self.secondary_offset_freq) #TODO digimodes
+            # print "==========> 4"
+
+        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:
+            self.secondary_shift_pipe_file.write("%g\n"%(-float(self.secondary_offset_freq)/self.if_samp_rate()))
+            self.secondary_shift_pipe_file.flush()
+
+    def stop_secondary_demodulator(self):
+        if self.secondary_processes_running == False: return
+        self.try_delete_pipes(self.secondary_pipe_names)
+        if self.secondary_process_fft: os.killpg(os.getpgid(self.secondary_process_fft.pid), signal.SIGTERM)
+        if self.secondary_process_demod: os.killpg(os.getpgid(self.secondary_process_demod.pid), signal.SIGTERM)
+        self.secondary_processes_running = False
+
+    def read_secondary_demod(self, size):
+        return self.secondary_process_demod.stdout.read(size)
+
+    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_secondary_fft_size(self,secondary_fft_size):
+        #to change this, restart is required
+        self.secondary_fft_size=secondary_fft_size
+
+    def set_audio_compression(self,what):
+        self.audio_compression = what
+
+    def set_fft_compression(self,what):
+        self.fft_compression = what
+
+    def get_fft_bytes_to_read(self):
+        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
+        self.decimation=1
+        while self.samp_rate/(self.decimation+1)>self.output_rate:
+            self.decimation+=1
+        self.last_decimation=float(self.if_samp_rate())/self.output_rate
+
+    def if_samp_rate(self):
+        return self.samp_rate/self.decimation
+
+    def get_name(self):
+        return self.name
+
+    def get_output_rate(self):
+        return self.output_rate
+
+    def set_output_rate(self,output_rate):
+        self.output_rate=output_rate
+        self.set_samp_rate(self.samp_rate) #as it depends on output_rate
+
+    def set_demodulator(self,demodulator):
+        #to change this, restart is required
+        self.demodulator=demodulator
+
+    def get_demodulator(self):
+        return self.demodulator
+
+    def set_fft_size(self,fft_size):
+        #to change this, restart is required
+        self.fft_size=fft_size
+
+    def set_fft_fps(self,fft_fps):
+        #to change this, restart is required
+        self.fft_fps=fft_fps
+
+    def set_fft_averages(self,fft_averages):
+        #to change this, restart is required
+        self.fft_averages=fft_averages
+
+    def fft_block_size(self):
+        if self.fft_averages == 0: return self.samp_rate/self.fft_fps
+        else: return self.samp_rate/self.fft_fps/self.fft_averages
+
+    def set_format_conversion(self,format_conversion):
+        self.format_conversion=format_conversion
+
+    def set_offset_freq(self,offset_freq):
+        self.offset_freq=offset_freq
+        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:
+            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)
+
+    def ddc_transition_bw(self):
+        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))
+            else:
+                setattr(self, pipe_name, None)
+
+    def try_delete_pipes(self, pipe_names):
+        for pipe_name in pipe_names:
+            pipe_path = getattr(self,pipe_name,None)
+            if pipe_path:
+                try: os.unlink(pipe_path)
+                except Exception as e: print "[openwebrx-dsp-plugin:csdr] try_delete_pipes() ::", e
+
+    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)
+
+        #create control pipes for csdr
+        self.pipe_base_path="/tmp/openwebrx_pipe_{myid}_".format(myid=id(self))
+        # self.bpf_pipe = self.shift_pipe = self.squelch_pipe = self.smeter_pipe = None
+
+        self.try_create_pipes(self.pipe_names, command_base)
+
+        # 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)
+        # if "{iqtee_pipe}" in command_base:
+            # self.iqtee_pipe=pipe_base_path+"iqtee"
+            # self.mkfifo(self.iqtee_pipe)
+        # if "{iqtee2_pipe}" in command_base:
+            # self.iqtee2_pipe=pipe_base_path+"iqtee2"
+            # self.mkfifo(self.iqtee2_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(), 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, iqtee_pipe=self.iqtee_pipe, iqtee2_pipe=self.iqtee2_pipe )
+
+        print "[openwebrx-dsp-plugin:csdr] Command =",command
+        #code.interact(local=locals())
+        my_env=os.environ.copy()
+        if self.csdr_dynamic_bufsize: my_env["CSDR_DYNAMIC_BUFSIZE_ON"]="1";
+        if self.csdr_print_bufsizes: my_env["CSDR_PRINT_BUFSIZES"]="1";
+        self.process = subprocess.Popen(command, stdout=subprocess.PIPE, shell=True, preexec_fn=os.setpgrp, env=my_env)
+        self.running = True
+
+        #open control pipes for csdr and send initialization data
+        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:
+            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")
+            self.set_pipe_nonblocking(self.smeter_pipe_file)
+
+        self.start_secondary_demodulator()
+
+    def read(self,size):
+        return self.process.stdout.read(size)
+
+    def stop(self):
+        os.killpg(os.getpgid(self.process.pid), signal.SIGTERM)
+        self.stop_secondary_demodulator()
+        #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)
+        #
+        #   time.sleep(0.1)
+
+        self.try_delete_pipes(self.pipe_names)
+
+        # if 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.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
+        # if self.iqtee_pipe:
+            # try: os.unlink(self.iqtee_pipe)
+            # except: print "[openwebrx-dsp-plugin:csdr] stop() :: unlink failed: " + self.iqtee_pipe
+        # if self.iqtee2_pipe:
+            # try: os.unlink(self.iqtee2_pipe)
+            # except: print "[openwebrx-dsp-plugin:csdr] stop() :: unlink failed: " + self.iqtee2_pipe
+
+        self.running = False
+
+    def restart(self):
+        self.stop()
+        self.start()
+
+    def __del__(self):
+        self.stop()
+        del(self.process)

htdocs/index.wrx

@@ -28,15 +28,23 @@
             var ws_url="%[WS_URL]";
             var rx_photo_height=%[RX_PHOTO_HEIGHT];
             var audio_buffering_fill_to=%[AUDIO_BUFSIZE];
-			var starting_mod = "%[START_MOD]";
+			var starting_mod="%[START_MOD]";
             var starting_offset_frequency = %[START_OFFSET_FREQ];
             var waterfall_colors=%[WATERFALL_COLORS];
             var waterfall_min_level_default=%[WATERFALL_MIN_LEVEL];
             var waterfall_max_level_default=%[WATERFALL_MAX_LEVEL];
             var waterfall_auto_level_margin=%[WATERFALL_AUTO_LEVEL_MARGIN];
+            var server_enable_digimodes=%[DIGIMODES_ENABLE];
+			var mathbox_waterfall_frequency_resolution=%[MATHBOX_WATERFALL_FRES];
+			var mathbox_waterfall_history_length=%[MATHBOX_WATERFALL_THIST];
+			var mathbox_waterfall_colors=%[MATHBOX_WATERFALL_COLORS];
         </script>
         <script src="sdr.js"></script>
+		<script src="mathbox-bundle.min.js"></script>
         <script src="openwebrx.js"></script>
+        <script src="jquery-3.2.1.min.js"></script>
+        <script src="jquery.nanoscroller.js"></script>
+        <link rel="stylesheet" type="text/css" href="nanoscroller.css" />
         <link rel="stylesheet" type="text/css" href="openwebrx.css" />
         <meta charset="utf-8">
     </head>
@@ -73,8 +81,8 @@
             <div id="openwebrx-scale-container">
                 <canvas id="openwebrx-scale-canvas" width="0" height="0"></canvas>
             </div>
+			<div id="openwebrx-mathbox-container"> </div>
             <div id="webrx-canvas-container">
-
                 <div id="openwebrx-phantom-canvas"></div>
                 <!-- add canvas here by javascript -->
             </div>
@@ -82,13 +90,24 @@
                 <div class="openwebrx-panel" id="openwebrx-panel-receiver" data-panel-name="client-params" data-panel-pos="right" data-panel-order="0" data-panel-size="259,115">
                     <div id="webrx-actual-freq">---.--- MHz</div>
                     <div id="webrx-mouse-freq">---.--- MHz</div>
-					<!--<div class="openwebrx-button" onclick="ws.send('SET mod=wfm');" >WFM</div>-->
                     <div class="openwebrx-panel-line">
-						<div class="openwebrx-button openwebrx-demodulator-button" onclick="demodulator_analog_replace('nfm');">FM</div>
+                        <div class="openwebrx-button openwebrx-demodulator-button" id="openwebrx-button-nfm" 
-						<div class="openwebrx-button openwebrx-demodulator-button" onclick="demodulator_analog_replace('am');">AM</div>
+                            onclick="demodulator_analog_replace('nfm');">FM</div>
-						<div class="openwebrx-button openwebrx-demodulator-button" onclick="demodulator_analog_replace('lsb');">LSB</div>
+                        <div class="openwebrx-button openwebrx-demodulator-button" id="openwebrx-button-am" 
-						<div class="openwebrx-button openwebrx-demodulator-button" onclick="demodulator_analog_replace('usb');">USB</div>
+                            onclick="demodulator_analog_replace('am');">AM</div>
-						<div class="openwebrx-button openwebrx-demodulator-button" onclick="demodulator_analog_replace('cw');">CW</div>
+                        <div class="openwebrx-button openwebrx-demodulator-button" id="openwebrx-button-lsb" 
+                            onclick="demodulator_analog_replace('lsb');">LSB</div>
+                        <div class="openwebrx-button openwebrx-demodulator-button" id="openwebrx-button-usb" 
+                            onclick="demodulator_analog_replace('usb');">USB</div>
+                        <div class="openwebrx-button openwebrx-demodulator-button" id="openwebrx-button-cw"
+                            onclick="demodulator_analog_replace('cw');">CW</div>
+                    </div>
+                    <div class="openwebrx-panel-line">
+                        <div class="openwebrx-button openwebrx-demodulator-button" id="openwebrx-button-dig" onclick="demodulator_digital_replace_last();">DIG</div>
+                        <select id="openwebrx-secondary-demod-listbox" onchange="secondary_demod_listbox_changed();">
+                            <option value="none"></option>
+                            <option value="bpsk31">BPSK31</option>
+                        </select>
                     </div>
                     <div class="openwebrx-panel-line">
                         <div title="Mute on/off" id="openwebrx-mute-off" class="openwebrx-button" onclick="toggleMute();"><img src="gfx/openwebrx-speaker.png" class="openwebrx-sliderbtn-img" id="openwebrx-mute-img"></div>
@@ -107,6 +126,7 @@
                         <div class="openwebrx-button openwebrx-square-button" onclick="zoomOutOneStep();" title="Zoom out one step"> <img src="gfx/openwebrx-zoom-out.png" /></div>
                         <div class="openwebrx-button openwebrx-square-button" onclick="zoomInTotal();"  title="Zoom in totally"><img src="gfx/openwebrx-zoom-in-total.png" /></div>
                         <div class="openwebrx-button openwebrx-square-button" onclick="zoomOutTotal();" title="Zoom out totally"><img src="gfx/openwebrx-zoom-out-total.png" /></div>
+						<div class="openwebrx-button openwebrx-square-button" onclick="mathbox_toggle();" title="Toggle 3D view"><img src="gfx/openwebrx-3d-spectrum.png" /></div>
                         <div id="openwebrx-smeter-db">0 dB</div>
                     </div>
                     <div class="openwebrx-panel-line">
@@ -115,13 +135,15 @@
                         </div>
                     </div>
                 </div>
-				<div class="openwebrx-panel" id="openwebrx-panel-log" data-panel-name="debug" data-panel-pos="left" data-panel-order="1" data-panel-size="619,142">
+                <div class="openwebrx-panel" id="openwebrx-panel-log" data-panel-name="debug" data-panel-pos="left" data-panel-order="1" data-panel-size="619,137">
-					<div class="openwebrx-panel-inner" id="openwebrx-log-scroll">
+                    <div class="openwebrx-panel-inner nano" id="openwebrx-log-scroll">
+                        <div class="nano-content">
                             <div id="openwebrx-client-log-title">OpenWebRX client log</strong><span id="openwebrx-problems"></span></div>
                             <span id="openwebrx-client-1">Author: </span><a href="http://blog.sdr.hu/about" target="_blank">András Retzler, HA7ILM</a><br />You can support OpenWebRX development via <a href="http://blog.sdr.hu/support" target="_blank">PayPal!</a><br/>
                             <div id="openwebrx-debugdiv"></div>
                         </div>
                     </div>
+                </div>
                 <div class="openwebrx-panel" id="openwebrx-panel-status" data-panel-name="status" data-panel-pos="left" data-panel-order="0" data-panel-size="615,50" data-panel-transparent="true">
                     <div class="openwebrx-progressbar" id="openwebrx-bar-audio-buffer"> <span class="openwebrx-progressbar-text">Audio buffer [0 ms]</span><div class="openwebrx-progressbar-bar"></div></div>
                     <div class="openwebrx-progressbar" id="openwebrx-bar-audio-output"> <span class="openwebrx-progressbar-text">Audio output [0 sps]</span><div class="openwebrx-progressbar-bar"></div></div>
@@ -134,6 +156,17 @@
                     <span style="font-size: 15pt; font-weight: bold;">Under construction</span>
                     <br />We're working on the code right now, so the application might fail.
                 </div>
+                <div class="openwebrx-panel" id="openwebrx-panel-digimodes" data-panel-name="digimodes" data-panel-pos="left" data-panel-order="2" data-panel-size="619,210">
+                    <div id="openwebrx-digimode-canvas-container">
+                        <div id="openwebrx-digimode-select-channel"></div>
+                    </div>
+                    <div id="openwebrx-digimode-content-container">
+                        <div class="gradient"></div>
+                        <div id="openwebrx-digimode-content">
+                        <span id="openwebrx-cursor-blink"></span>
+                        </div>
+                    </div>
+                </div>
             </div>
     </div>
 </div>

htdocs/mathbox.css

@@ -0,0 +1,461 @@
+.shadergraph-graph {
+  font: 12px sans-serif;
+  line-height: 25px;
+  position: relative;
+}
+.shadergraph-graph:after {
+  content: ' ';
+  display: block;
+  height: 0;
+  font-size: 0;
+  clear: both;
+}
+.shadergraph-graph svg {
+  pointer-events: none;
+}
+.shadergraph-clear {
+  clear: both;
+}
+.shadergraph-graph svg {
+  position: absolute;
+  left: 0;
+  right: 0;
+  top: 0;
+  bottom: 0;
+  width: auto;
+  height: auto;
+}
+.shadergraph-column {
+  float: left;
+}
+.shadergraph-node .shadergraph-graph {
+  float: left;
+  clear: both;
+  overflow: visible;
+}
+.shadergraph-node .shadergraph-graph .shadergraph-node {
+  margin: 5px 15px 15px; 
+}
+.shadergraph-node {
+  margin: 5px 15px 25px; 
+  background: rgba(0, 0, 0, .1);
+  border-radius: 5px;
+  box-shadow: 0 1px  2px rgba(0, 0, 0, .2),
+              0 1px  10px rgba(0, 0, 0, .2);
+  min-height: 35px;
+  float: left;
+  clear: left;
+  position: relative;
+}
+.shadergraph-type {
+  font-weight: bold;
+}
+.shadergraph-header {
+  font-weight: bold;
+  text-align: center;
+  height: 25px;
+  background: rgba(0, 0, 0, .3);
+  text-shadow: 0 1px 2px rgba(0, 0, 0, .25);
+  color: #fff;
+  border-top-left-radius: 5px;
+  border-top-right-radius: 5px;
+  margin-bottom: 5px;
+  padding: 0 10px;
+}
+.shadergraph-outlet div {
+}
+.shadergraph-outlet-in .shadergraph-name {
+  margin-right: 7px;
+}
+.shadergraph-outlet-out .shadergraph-name {
+  margin-left: 7px;
+}
+
+.shadergraph-name {
+  margin: 0 4px;
+}
+.shadergraph-point {
+  margin: 6px;
+  width:  11px;
+  height: 11px;
+  border-radius: 7.5px;
+  background: rgba(255, 255, 255, 1);
+}
+.shadergraph-outlet-in {
+  float: left;
+  clear: left;
+}
+.shadergraph-outlet-in div {
+  float: left;
+}
+.shadergraph-outlet-out {
+  float: right;
+  clear: right;
+}
+.shadergraph-outlet-out div {
+  float: right;
+}
+
+.shadergraph-node-callback {
+  background: rgba(205, 209, 221, .5);
+  box-shadow: 0 1px  2px rgba(0, 10, 40, .2),
+              0 1px  10px rgba(0, 10, 40, .2);
+}
+.shadergraph-node-callback > .shadergraph-header {
+  background: rgba(0, 20, 80, .3);
+}
+.shadergraph-graph .shadergraph-graph .shadergraph-node-callback {
+  background: rgba(0, 20, 80, .1);
+}
+
+.shadergraph-node-call {
+  background: rgba(209, 221, 205, .5);
+  box-shadow: 0 1px  2px rgba(10, 40, 0, .2),
+              0 1px  10px rgba(10, 40, 0, .2);
+}
+.shadergraph-node-call > .shadergraph-header {
+  background: rgba(20, 80, 0, .3);
+}
+.shadergraph-graph .shadergraph-graph .shadergraph-node-call {
+  background: rgba(20, 80, 0, .1);
+}
+
+.shadergraph-node-isolate {
+  background: rgba(221, 205, 209, .5);
+  box-shadow: 0 1px  2px rgba(40, 0, 10, .2),
+              0 1px  10px rgba(40, 0, 10, .2);
+}
+.shadergraph-node-isolate > .shadergraph-header {
+  background: rgba(80, 0, 20, .3);
+}
+.shadergraph-graph .shadergraph-graph .shadergraph-node-isolate {
+  background: rgba(80, 0, 20, .1);
+}
+
+.shadergraph-node.shadergraph-has-code {
+  cursor: pointer;
+}
+.shadergraph-node.shadergraph-has-code::before {
+  position: absolute;
+  content: ' ';
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  display: none;
+  border: 2px solid rgba(0, 0, 0, .25);
+  border-radius: 5px;
+}
+.shadergraph-node.shadergraph-has-code:hover::before {
+  display: block;
+}
+.shadergraph-code {
+  z-index: 10000;
+  display: none;
+  position: absolute;
+  background: #fff;
+  color: #000;
+  white-space: pre;
+  padding: 10px;
+  border-radius: 5px;
+  box-shadow: 0 1px  2px rgba(0, 0, 0, .2),
+              0 1px  10px rgba(0, 0, 0, .2);
+  font-family: monospace;
+  font-size: 10px;
+  line-height: 12px;
+}
+
+.shadergraph-overlay {
+  position: fixed;
+  top: 50%;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: #fff;
+  border-top: 1px solid #CCC;
+}
+.shadergraph-overlay .shadergraph-view {
+  position: absolute;
+  left: 0;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  overflow: auto;
+}
+.shadergraph-overlay .shadergraph-inside {
+  width: 4000px;
+  min-height: 100%;
+  box-sizing: border-box;
+}
+.shadergraph-overlay .shadergraph-close {
+  position: absolute;
+  top: 5px;
+  right: 5px;
+  padding: 4px;
+  border-radius: 16px;
+  background: rgba(255,255,255,.3);
+  color: rgba(0, 0, 0, .3);
+  cursor: pointer;
+  font-size: 24px;
+  line-height: 24px;
+  width: 24px;
+  text-align: center;
+  vertical-align: middle;
+}
+.shadergraph-overlay .shadergraph-close:hover {
+  background: rgba(255,255,255,1);
+  color: rgba(0, 0, 0, 1);
+}
+.shadergraph-overlay .shadergraph-graph {
+  padding-top: 10px;
+  overflow: visible;
+  min-height: 100%;
+}
+.shadergraph-overlay span {
+  display: block;
+  padding: 5px 15px;
+  margin: 0;
+  background: rgba(0, 0, 0, .1);
+  font-weight: bold;
+  font-family: sans-serif;
+}
+.mathbox-loader {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  -webkit-transform: translate(-50%, -50%);
+  transform: translate(-50%, -50%);
+  padding: 10px;
+  border-radius: 50%;
+  background: #fff;
+}
+
+.mathbox-loader.mathbox-exit {
+  opacity: 0;
+  -webkit-transition:
+    opacity .15s ease-in-out;
+  transition:
+    opacity .15s ease-in-out;
+}
+
+.mathbox-progress {
+  height: 10px;
+  border-radius: 5px;
+  width: 80px;
+  margin: 0 auto 20px;
+  box-shadow:
+     1px  1px 1px rgba(255, 255, 255, .2),
+     1px -1px 1px rgba(255, 255, 255, .2),
+    -1px  1px 1px rgba(255, 255, 255, .2),
+    -1px -1px 1px rgba(255, 255, 255, .2);
+  background: #ccc;
+  overflow: hidden;
+}
+
+.mathbox-progress > div {
+  display: block;
+  width: 0px;
+  height: 10px;
+  background: #888;
+}
+
+.mathbox-logo {
+  position: relative;
+  width: 140px;
+  height: 100px;
+  margin: 0 auto 10px;
+  -webkit-perspective: 200px;
+  perspective: 200px;
+}
+
+.mathbox-logo > div {
+  position: absolute;
+  left: 0;
+  top: 0;
+  bottom: 0;
+  right: 0;
+  -webkit-transform-style: preserve-3d;
+  transform-style:         preserve-3d;
+}
+
+.mathbox-logo > :nth-child(1) {
+  -webkit-transform: rotateZ(22deg) rotateX(24deg) rotateY(30deg);
+  transform:         rotateZ(22deg) rotateX(24deg) rotateY(30deg);
+}
+
+.mathbox-logo > :nth-child(2) {
+  -webkit-transform: rotateZ(11deg) rotateX(12deg) rotateY(15deg) scale3d(.6, .6, .6);
+  transform:         rotateZ(11deg) rotateX(12deg) rotateY(15deg) scale3d(.6, .6, .6);
+}
+
+.mathbox-logo > div > div {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  margin-left: -100px;
+  margin-top: -100px;
+  width: 200px;
+  height: 200px;
+  box-sizing: border-box;
+  border-radius: 50%;
+}
+
+.mathbox-logo > div > :nth-child(1) {
+  -webkit-transform: scale(0.5, 0.5);
+  transform:         rotateX(30deg) scale(0.5, 0.5);
+}
+
+.mathbox-logo > div > :nth-child(2) {
+  -webkit-transform: rotateX(90deg) scale(0.42, 0.42);
+  transform:         rotateX(90deg) scale(0.42, 0.42);
+}
+
+.mathbox-logo > div > :nth-child(3) {
+  -webkit-transform: rotateY(90deg) scale(0.35, 0.35);
+  transform:         rotateY(90deg) scale(0.35, 0.35);
+}
+
+.mathbox-logo > :nth-child(1) > :nth-child(1) {
+  border: 16px solid #808080;
+}
+.mathbox-logo > :nth-child(1) > :nth-child(2) {
+  border: 19px solid #A0A0A0;
+}
+.mathbox-logo > :nth-child(1) > :nth-child(3) {
+  border: 23px solid #C0C0C0;
+}
+.mathbox-logo > :nth-child(2) > :nth-child(1) {
+  border: 27px solid #808080;
+}
+.mathbox-logo > :nth-child(2) > :nth-child(2) {
+  border: 32px solid #A0A0A0;
+}
+.mathbox-logo > :nth-child(2) > :nth-child(3) {
+  border: 38px solid #C0C0C0;
+}
+
+.mathbox-splash-blue .mathbox-progress {
+  background: #def;
+}
+.mathbox-splash-blue .mathbox-progress > div {
+  background: #1979e7;
+}
+.mathbox-splash-blue .mathbox-logo > :nth-child(1) > :nth-child(1) {
+  border-color: #1979e7;
+}
+.mathbox-splash-blue .mathbox-logo > :nth-child(1) > :nth-child(2) {
+  border-color: #33b0ff;
+}
+.mathbox-splash-blue .mathbox-logo > :nth-child(1) > :nth-child(3) {
+  border-color: #75eaff;
+}
+.mathbox-splash-blue .mathbox-logo > :nth-child(2) > :nth-child(1) {
+  border-color: #18487F;
+}
+.mathbox-splash-blue .mathbox-logo > :nth-child(2) > :nth-child(2) {
+  border-color: #33b0ff;
+}
+.mathbox-splash-blue .mathbox-logo > :nth-child(2) > :nth-child(3) {
+  border-color: #75eaff;
+}  
+
+
+
+
+.mathbox-overlays {
+  position: absolute;
+  left:   0;
+  top:    0;
+  right:  0;
+  bottom: 0;
+  pointer-events: none;
+  transform-style: preserve-3d;
+  overflow: hidden;
+}
+.mathbox-overlays > div {
+  transform-style: preserve-3d;
+}
+.mathbox-overlay > div {
+  position: absolute;
+  will-change: transform, opacity;
+}
+.mathbox-label {
+  font-family: sans-serif;
+}
+.mathbox-outline-1 {
+  text-shadow:
+    -1px -1px 0px rgb(255, 255, 255),
+     1px  1px 0px rgb(255, 255, 255),
+    -1px  1px 0px rgb(255, 255, 255),
+     1px -1px 0px rgb(255, 255, 255),
+     1px  0px 1px rgb(255, 255, 255),
+    -1px  0px 1px rgb(255, 255, 255),
+     0px -1px 1px rgb(255, 255, 255),
+     0px  1px 1px rgb(255, 255, 255);
+}
+.mathbox-outline-2 {
+  text-shadow:
+     0px -2px 0px rgb(255, 255, 255),
+     0px  2px 0px rgb(255, 255, 255),
+    -2px  0px 0px rgb(255, 255, 255),
+     2px  0px 0px rgb(255, 255, 255),
+    -1px -2px 0px rgb(255, 255, 255),
+    -2px -1px 0px rgb(255, 255, 255),
+    -1px  2px 0px rgb(255, 255, 255),
+    -2px  1px 0px rgb(255, 255, 255),
+     1px  2px 0px rgb(255, 255, 255),
+     2px  1px 0px rgb(255, 255, 255),
+     1px -2px 0px rgb(255, 255, 255),
+     2px -1px 0px rgb(255, 255, 255);
+}
+.mathbox-outline-3 {
+  text-shadow:
+     3px  0px 0px rgb(255, 255, 255),
+    -3px  0px 0px rgb(255, 255, 255),
+     0px  3px 0px rgb(255, 255, 255),
+     0px -3px 0px rgb(255, 255, 255),
+
+    -2px -2px 0px rgb(255, 255, 255),
+    -2px  2px 0px rgb(255, 255, 255),
+     2px  2px 0px rgb(255, 255, 255),
+     2px -2px 0px rgb(255, 255, 255),
+
+    -1px -2px 1px rgb(255, 255, 255),
+    -2px -1px 1px rgb(255, 255, 255),
+    -1px  2px 1px rgb(255, 255, 255),
+    -2px  1px 1px rgb(255, 255, 255),
+     1px  2px 1px rgb(255, 255, 255),
+     2px  1px 1px rgb(255, 255, 255),
+     1px -2px 1px rgb(255, 255, 255),
+     2px -1px 1px rgb(255, 255, 255);
+}
+.mathbox-outline-4 {
+  text-shadow:
+     4px  0px 0px rgb(255, 255, 255),
+    -4px  0px 0px rgb(255, 255, 255),
+     0px  4px 0px rgb(255, 255, 255),
+     0px -4px 0px rgb(255, 255, 255),
+   
+    -3px -2px 0px rgb(255, 255, 255),
+    -3px  2px 0px rgb(255, 255, 255),
+     3px  2px 0px rgb(255, 255, 255),
+     3px -2px 0px rgb(255, 255, 255),
+   
+    -2px -3px 0px rgb(255, 255, 255),
+    -2px  3px 0px rgb(255, 255, 255),
+     2px  3px 0px rgb(255, 255, 255),
+     2px -3px 0px rgb(255, 255, 255),
+   
+    -1px -2px 1px rgb(255, 255, 255),
+    -2px -1px 1px rgb(255, 255, 255),
+    -1px  2px 1px rgb(255, 255, 255),
+    -2px  1px 1px rgb(255, 255, 255),
+     1px  2px 1px rgb(255, 255, 255),
+     2px  1px 1px rgb(255, 255, 255),
+     1px -2px 1px rgb(255, 255, 255),
+     2px -1px 1px rgb(255, 255, 255);
+
+}
+.mathbox-outline-fill, .mathbox-outline-fill * {
+  color: #fff !important;
+}

htdocs/nanoscroller.css

@@ -0,0 +1,55 @@
+/** initial setup **/
+.nano {
+  position : relative;
+  width    : 100%;
+  height   : 100%;
+  overflow : hidden;
+}
+.nano > .nano-content {
+  position      : absolute;
+  overflow      : scroll;
+  overflow-x    : hidden;
+  top           : 0;
+  right         : 0;
+  bottom        : 0;
+  left          : 0;
+}
+.nano > .nano-content:focus {
+  outline: thin dotted;
+}
+.nano > .nano-content::-webkit-scrollbar {
+  display: none;
+}
+.has-scrollbar > .nano-content::-webkit-scrollbar {
+  display: block;
+}
+.nano > .nano-pane {
+  background : rgba(0,0,0,.25);
+  position   : absolute;
+  width      : 8px;
+  right      : 0;
+  top        : 0;
+  bottom     : 0;
+  visibility : hidden\9; /* Target only IE7 and IE8 with this hack */
+  opacity    : .01;
+  -webkit-transition    : .2s;
+  -moz-transition       : .2s;
+  -o-transition         : .2s;
+  transition            : .2s;
+  -moz-border-radius    : 3px;
+  -webkit-border-radius : 3px;
+  border-radius         : 3px;
+}
+.nano > .nano-pane > .nano-slider {
+  background: #444;
+  background: rgba(0,0,0,.5);
+  position              : relative;
+  margin                : 0 0px;
+  -moz-border-radius    : 4px;
+  -webkit-border-radius : 4px;
+  border-radius         : 4px;
+}
+.nano:hover > .nano-pane, .nano-pane.active, .nano-pane.flashed {
+  visibility : visible\9; /* Target only IE7 and IE8 with this hack */
+  opacity    : 0.99;
+}

htdocs/openwebrx.css

@@ -28,6 +28,11 @@ html, body
 	overflow: hidden;
 }
 
+select
+{
+	font-family: "DejaVu Sans", Verdana, Geneva, sans-serif;
+}
+
 input
 {
 	vertical-align:middle;
@@ -394,6 +399,13 @@ input[type=range]:focus::-ms-fill-upper
 	border-style: none;
 	image-rendering: crisp-edges;
 	image-rendering: -webkit-optimize-contrast;
+    /*transition: left 200ms, width 200ms;*/
+}
+
+#openwebrx-mathbox-container
+{
+	overflow: none;
+	display: none;
 }
 
 #openwebrx-phantom-canvas
@@ -410,11 +422,15 @@ input[type=range]:focus::-ms-fill-upper
 	height: 396px;
 }*/
 
-/*#webrx-debugdiv
+#openwebrx-log-scroll
 {
-	font-size: 10pt;
+    /*overflow-y:auto;*/
-	/*overflow-y:scroll;*/
+    height: 125px;
-/*}*/
+    width: 619px
+}
+
+.nano .nano-pane   { background: #444; }
+.nano .nano-slider { background: #eee !important;  }
 
 #webrx-main-container
 {
@@ -499,7 +515,7 @@ input[type=range]:focus::-ms-fill-upper
 
 .openwebrx-panel
 {
-	transform: perspective( 600px );
+	transform: perspective( 600px ) rotateX( 90deg );
 	visibility: hidden;
 	background-color: #575757;
 	padding: 10px;
@@ -526,7 +542,7 @@ input[type=range]:focus::-ms-fill-upper
 .openwebrx-button
 {
 	background-color: #373737;
-	padding: 5px;
+	padding: 4.2px;
 	border-radius: 5px;
 	-moz-border-radius: 5px;
 	color: White;
@@ -544,7 +560,7 @@ input[type=range]:focus::-ms-fill-upper
 	display: inline-block;
 }
 
-.openwebrx-button:hover
+.openwebrx-button:hover, .openwebrx-demodulator-button.highlighted
 {
 	/*background:-webkit-gradient( linear, left top, left bottom, color-stop(0.0	, #3F3F3F), color-stop(1, #777777) );
 	background:-moz-linear-gradient( center top, #373737 5%, #4F4F4F 100% );*/
@@ -560,7 +576,7 @@ input[type=range]:focus::-ms-fill-upper
 
 .openwebrx-demodulator-button
 {
-	width: 35px;
+	width: 38px;
 	height: 19px;
 	font-size: 12pt;
 	text-align: center;
@@ -568,7 +584,7 @@ input[type=range]:focus::-ms-fill-upper
 
 .openwebrx-square-button img
 {
-	height: 30px;
+	height: 27px;
 }
 
 .openwebrx-round-button
@@ -732,7 +748,7 @@ img.openwebrx-mirror-img
 {
 	position: relative;
 	top: -2px;
-	width:91px;
+	width: 95px;
 }
 
 .openwebrx-sliderbtn-img
@@ -776,7 +792,7 @@ img.openwebrx-mirror-img
 	font-size: 10pt;
 	float: right;
 	margin-right: 5px;
-	margin-top: 29px;
+	margin-top: 24px;
 	font-family: 'expletus-sans-medium';
 }
 
@@ -806,3 +822,152 @@ img.openwebrx-mirror-img
 {
 	width: 150px;
 }
+
+#openwebrx-digimode-canvas-container
+{
+	/*margin: -10px -10px 10px -10px;*/
+    margin: -10px -10px 0px -10px;
+	border-radius: 15px;
+	height: 150px;
+	background-color: #333;
+    position: relative;
+    overflow: hidden;
+}
+
+#openwebrx-digimode-canvas-container canvas
+{
+    position: absolute;
+    pointer-events: none;
+    transition: width 500ms, left 500ms;
+}
+
+#openwebrx-secondary-demod-listbox
+{
+	width: 201px;
+	height: 27px;
+	border-radius: 5px;
+	background-color: #373737;
+	color: White;
+	font-weight: normal;
+	font-size: 13pt;
+	margin-right: 1px;
+	background:-webkit-gradient( linear, left top, left bottom, color-stop(0.0	, #373737), color-stop(1, #4F4F4F) );
+	background:-moz-linear-gradient( center top, #373737 0%, #4F4F4F 100% );
+	border-color: transparent;
+	border-width: 0px;
+	-moz-appearance: none;
+	padding-left:3px;
+}
+
+#openwebrx-secondary-demod-listbox option
+{
+	border-width: 0px;
+	background-color: #373737;
+	color: White;
+}
+
+#openwebrx-cursor-blink
+{
+	animation: cursor-blink 1s infinite;
+	/*animation: cursor-3d 2s infinite;*/
+	animation-timing-function: linear;
+	animation-direction: alternate;
+	height: 1em;
+	width: 8px;
+	background-color: White;
+	display: inline-block;
+    position: relative;
+    top: 1px;
+	/*perspective: 60px;*/
+
+}
+
+@keyframes cursor-blink
+{
+	0%{ opacity: 0; }
+	50% { opacity: 1; }
+	100%{ opacity: 0; }
+}
+
+@keyframes cursor-3d
+{
+	0%{ transform: rotateX(0deg) rotateX(Ydeg); }
+	50% { transform: rotateX(180deg) rotateY(360deg); opacity: 0.1; }
+	100%{ transform: rotateX(360deg) rotateY(720deg); }
+}
+
+#openwebrx-digimode-content
+{
+    word-wrap: break-word;
+    position: absolute;
+    bottom: 0;
+    width: 100%;
+}
+
+#openwebrx-digimode-content-container
+{
+    overflow-y: hidden;
+    display: block;
+    height: 50px;
+    position: relative;
+}
+
+#openwebrx-digimode-content-container .gradient
+{
+    width: 100%;
+    height: 20px;
+    background: linear-gradient(to top,  rgba(87,87,87,0) 0%,rgba(87,87,87,1) 100%);
+    position: absolute;
+    top: 0;
+    z-index: 10;
+}
+
+
+#openwebrx-digimode-content .part
+{
+    perspective: 700px;
+}
+
+#openwebrx-digimode-content .part
+{
+    animation: new-digimode-data-3d 100ms;
+	animation-timing-function: linear; 
+    display: inline-block;
+    perspective-origin: 50% 50%;
+    transform-origin: 0% 50%;
+}
+
+#openwebrx-digimode-content .part .subpart
+{
+}
+
+
+@keyframes new-digimode-data
+{
+	0%{ opacity: 0; }
+	100%{ opacity: 1; }
+}
+
+@keyframes new-digimode-data-3d
+{
+	0%{ transform: rotateX(0deg) rotateY(-90deg) translateX(-5px) scale(1.3); }
+	100%{ transform: rotateX(0deg) rotateY(0deg) translateX(0) scale(1); }
+}
+
+#openwebrx-digimode-select-channel
+{
+    transition: all 500ms;
+    background-color: Yellow;
+    display: block;
+    position: absolute;
+    pointer-events: none;
+    height: 100%;
+    width: 0px;
+    top: 0px;
+    left: 0px;
+    opacity: 0.7;
+    border-style: solid;
+    border-width: 0px;
+    border-color: Red;
+}
+

htdocs/openwebrx.js

@@ -51,6 +51,7 @@ var audio_compression="none";
 var waterfall_setup_done=0;
 var waterfall_queue = [];
 var waterfall_timer;
+var secondary_fft_size;
 
 /*function fade(something,from,to,time_ms,fps)
 {
@@ -549,6 +550,7 @@ function demodulator_default_analog(offset_frequency,subtype)
 
 	this.envelope.drag_end=function(x)
 	{ //in this demodulator we've already changed values in the drag_move() function so we shouldn't do too much here.
+		demodulator_buttons_update();
 		to_return=this.dragged_range!=demodulator.draggable_ranges.none; //this part is required for cliking anywhere on the scale to set offset
 		this.dragged_range=demodulator.draggable_ranges.none;
 		return to_return;
@@ -565,6 +567,7 @@ function mkenvelopes(visible_range) //called from mkscale
 	{
 		demodulators[i].envelope.draw(visible_range);
 	}
+    if(demodulators.length) secondary_demod_waterfall_set_zoom(demodulators[0].low_cut, demodulators[0].high_cut);
 }
 
 function demodulator_remove(which)
@@ -579,8 +582,17 @@ function demodulator_add(what)
 	mkenvelopes(get_visible_freq_range());
 }
 
-function demodulator_analog_replace(subtype)
+last_analog_demodulator_subtype = 'nfm';
+last_digital_demodulator_subtype = 'bpsk31';
+
+function demodulator_analog_replace(subtype, for_digital)
 { //this function should only exist until the multi-demodulator capability is added
+    if(!(typeof for_digital !== "undefined" && for_digital && secondary_demod)) 
+    { 
+        secondary_demod_close_window(); 
+        secondary_demod_listbox_update(); 
+    }
+    last_analog_demodulator_subtype = subtype;
 	var temp_offset=0;
 	if(demodulators.length)
 	{
@@ -588,6 +600,7 @@ function demodulator_analog_replace(subtype)
 		demodulator_remove(0);
 	}
 	demodulator_add(new demodulator_default_analog(temp_offset,subtype));
+	demodulator_buttons_update();
 }
 
 function demodulator_set_offset_frequency(which,to_what)
@@ -1055,7 +1068,7 @@ function zoom_step(out, where, onscreen)
 	zoom_center_rel=canvas_get_freq_offset(where);
 	//console.log("zoom_step || zlevel: "+zoom_level.toString()+" zlevel_val: "+zoom_levels[zoom_level].toString()+" zoom_center_rel: "+zoom_center_rel.toString());
 	zoom_center_where=onscreen;
-	console.log(zoom_center_where, zoom_center_rel, where);
+	//console.log(zoom_center_where, zoom_center_rel, where);
 	resize_canvases(true);
 	mkscale();
 }
@@ -1087,9 +1100,17 @@ function zoom_calc()
 function resize_waterfall_container(check_init)
 {
 	if(check_init&&!waterfall_setup_done) return;
-	canvas_container.style.height=(window.innerHeight-e("webrx-top-container").clientHeight-e("openwebrx-scale-container").clientHeight).toString()+"px";
+	var numHeight;
-}
+	mathbox_container.style.height=canvas_container.style.height=(numHeight=window.innerHeight-e("webrx-top-container").clientHeight-e("openwebrx-scale-container").clientHeight).toString()+"px";
+	if(mathbox)
+	{
+		//mathbox.three.camera.aspect = document.body.offsetWidth / numHeight;
+  		//mathbox.three.camera.updateProjectionMatrix();
+		mathbox.three.renderer.setSize(document.body.offsetWidth, numHeight);
+		console.log(document.body.offsetWidth, numHeight);
+	}
 
+}
 
 audio_server_output_rate=11025;
 audio_client_resampling_factor=4;
@@ -1126,14 +1147,15 @@ function on_ws_recv(evt)
 	if(!(evt.data instanceof ArrayBuffer)) { divlog("on_ws_recv(): Not ArrayBuffer received...",1); return; }
 	//
 	debug_ws_data_received+=evt.data.byteLength/1000;
-	firstChars=getFirstChars(evt.data,3);
+	first4Chars=getFirstChars(evt.data,4);
-	if(firstChars=="CLI")
+    first3Chars=first4Chars.slice(0,3);
+	if(first3Chars=="CLI")
 	{
 		var stringData=arrayBufferToString(evt.data);
-		if(stringData.substring(0,16)=="CLIENT DE SERVER") divlog("Acknowledged WebSocket connection: "+stringData);
+		if(stringData.substring(0,16)=="CLIENT DE SERVER") divlog("Server acknowledged WebSocket connection.");
 
 	}
-	if(firstChars=="AUD")
+	if(first3Chars=="AUD")
 	{
 		var audio_data;
 		if(audio_compression=="adpcm") audio_data=new Uint8Array(evt.data,4)
@@ -1143,9 +1165,10 @@ function on_ws_recv(evt)
 		audio_buffer_all_size_debug+=audio_data.length;
 		if(!ios && (audio_initialized==0 && audio_prepared_buffers.length>audio_buffering_fill_to)) audio_init()
 	}
-	else if(firstChars=="FFT")
+	else if(first3Chars=="FFT")
 	{
 		//alert("Yupee! Doing FFT");
+        //if(first4Chars=="FFTS") console.log("FFTS"); 
 		if(fft_compression=="none") waterfall_add_queue(new Float32Array(evt.data,4));
 		else if(fft_compression="adpcm")
 		{
@@ -1154,9 +1177,17 @@ function on_ws_recv(evt)
 			var waterfall_i16=fft_codec.decode(new Uint8Array(evt.data,4));
 			var waterfall_f32=new Float32Array(waterfall_i16.length-COMPRESS_FFT_PAD_N);
 			for(var i=0;i<waterfall_i16.length;i++) waterfall_f32[i]=waterfall_i16[i+COMPRESS_FFT_PAD_N]/100;
-			waterfall_add_queue(waterfall_f32);
+            if(first4Chars=="FFTS") secondary_demod_waterfall_add_queue(waterfall_f32); //TODO digimodes
+            else waterfall_add_queue(waterfall_f32);
 		}
-	} else if(firstChars=="MSG")
+	} 
+    else if(first3Chars=="DAT")
+    {
+        //secondary_demod_push_binary_data(new Uint8Array(evt.data,4));
+        secondary_demod_push_data(arrayBufferToString(evt.data).substring(4));
+        //console.log("DAT");
+	} 
+    else if(first3Chars=="MSG")
 	{
 		/*try
 		{*/
@@ -1179,6 +1210,18 @@ function on_ws_recv(evt)
 						break;
 					case "fft_size":
 						fft_size=parseInt(param[1]);
+						break;
+					case "secondary_fft_size":
+						secondary_fft_size=parseInt(param[1]);
+						break;
+                    case "secondary_setup":
+                        secondary_demod_init_canvases();
+                        break;
+                    case "if_samp_rate":
+                        if_samp_rate=parseInt(param[1]);
+                        break;
+                    case "secondary_bw":
+                        secondary_bw=parseFloat(param[1]);
                         break;
 					case "fft_fps":
 						fft_fps=parseInt(param[1]);
@@ -1279,8 +1322,10 @@ function divlog(what, is_error)
 		if(e("openwebrx-panel-log").openwebrxHidden) toggle_panel("openwebrx-panel-log"); //show panel if any error is present
 	}
 	e("openwebrx-debugdiv").innerHTML+=what+"<br />";
-	var wls=e("openwebrx-log-scroll");
+	//var wls=e("openwebrx-log-scroll");
-	wls.scrollTop=wls.scrollHeight; //scroll to bottom
+	//wls.scrollTop=wls.scrollHeight; //scroll to bottom
+    $(".nano").nanoScroller();
+    $(".nano").nanoScroller({ scroll: 'bottom' });
 }
 
 var audio_context;
@@ -1516,16 +1561,24 @@ function webrx_set_param(what, value)
 	ws.send("SET "+what+"="+value.toString());
 }
 
+var starting_mute = false;
+
 function parsehash()
 {
 	if(h=window.location.hash)
 	{
 		h.substring(1).split(",").forEach(function(x){
 			harr=x.split("=");
-			console.log(harr);
+			//console.log(harr);
-			if(harr[0]=="mod") starting_mod = harr[1];
+			if(harr[0]=="mute") toggleMute();
-			if(harr[0]=="sql") { e("openwebrx-panel-squelch").value=harr[1]; updateSquelch(); }
+			else if(harr[0]=="mod") starting_mod = harr[1];
-			if(harr[0]=="freq") {
+			else if(harr[0]=="sql") 
+			{ 
+				e("openwebrx-panel-squelch").value=harr[1]; 
+				updateSquelch(); 
+			}
+			else if(harr[0]=="freq") 
+			{
 				console.log(parseInt(harr[1]));
 				console.log(center_freq);
 				starting_offset_frequency = parseInt(harr[1])-center_freq;
@@ -1569,6 +1622,8 @@ function audio_preinit()
 
 function audio_init()
 {
+	if(starting_mute) toggleMute();
+
 	if(audio_client_resampling_factor==0) return; //if failed to find a valid resampling factor...
 
 	audio_debug_time_start=(new Date()).getTime();
@@ -1613,6 +1668,7 @@ function audio_init()
 			//window.setTimeout(function(){toggle_panel("openwebrx-panel-log");e("openwebrx-panel-log").style.opacity="1";},1200)
 		}
 	},2000);
+
 }
 
 function on_ws_closed()
@@ -1653,17 +1709,18 @@ function open_websocket()
 	ws.onerror = on_ws_error;
 }
 
-function waterfall_mkcolor(db_value)
+function waterfall_mkcolor(db_value, waterfall_colors_arg)
 {
+	if(typeof waterfall_colors_arg === 'undefined') waterfall_colors_arg = waterfall_colors;
 	if(db_value<waterfall_min_level) db_value=waterfall_min_level;
 	if(db_value>waterfall_max_level) db_value=waterfall_max_level;
 	full_scale=waterfall_max_level-waterfall_min_level;
 	relative_value=db_value-waterfall_min_level;
 	value_percent=relative_value/full_scale;
-	percent_for_one_color=1/(waterfall_colors.length-1);
+	percent_for_one_color=1/(waterfall_colors_arg.length-1);
 	index=Math.floor(value_percent/percent_for_one_color);
 	remain=(value_percent-percent_for_one_color*index)/percent_for_one_color;
-	return color_between(waterfall_colors[index+1],waterfall_colors[index],remain);
+	return color_between(waterfall_colors_arg[index+1],waterfall_colors_arg[index],remain);
 }
 
 function color_between(first, second, percent)
@@ -1686,7 +1743,7 @@ var canvas_phantom;
 
 function add_canvas()
 {
-	new_canvas = document.createElement("canvas");
+	var new_canvas = document.createElement("canvas");
 	new_canvas.width=fft_size;
 	new_canvas.height=canvas_default_height;
 	canvas_actual_line=canvas_default_height-1;
@@ -1706,9 +1763,11 @@ function add_canvas()
 	canvases.push(new_canvas);
 }
 
+
 function init_canvas_container()
 {
 	canvas_container=e("webrx-canvas-container");
+	mathbox_container=e("openwebrx-mathbox-container");
 	canvas_container.addEventListener("mouseout",canvas_container_mouseout, false);
 	//window.addEventListener("mouseout",window_mouseout,false);
 	//document.body.addEventListener("mouseup",body_mouseup,false);
@@ -1765,7 +1824,7 @@ function resize_canvases(zoom)
 function waterfall_init()
 {
 	init_canvas_container();
-	waterfall_timer = window.setInterval(waterfall_dequeue,900/fft_fps);
+	waterfall_timer = window.setInterval(()=>{waterfall_dequeue(); secondary_demod_waterfall_dequeue();},900/fft_fps);
 	resize_waterfall_container(false); /* then */ resize_canvases();
 	scale_setup();
 	mkzoomlevels();
@@ -1774,6 +1833,42 @@ function waterfall_init()
 
 var waterfall_dont_scale=0;
 
+var mathbox_shift = function()
+{
+	if(mathbox_data_current_depth < mathbox_data_max_depth) mathbox_data_current_depth++;
+	if(mathbox_data_index+1>=mathbox_data_max_depth) mathbox_data_index = 0;
+	else mathbox_data_index++;
+	mathbox_data_global_index++;
+}
+
+var mathbox_clear_data = function()
+{
+	mathbox_data_index = 50;
+	mathbox_data_current_depth = 0;
+}
+
+//var mathbox_get_data_line = function(x) //x counts from 0 to mathbox_data_current_depth
+//{
+//	return (mathbox_data_max_depth + mathbox_data_index - mathbox_data_current_depth + x - 1) % mathbox_data_max_depth;
+//}
+//
+//var mathbox_data_index_valid = function(x) //x counts from 0 to mathbox_data_current_depth
+//{
+//	return x<mathbox_data_current_depth;
+//}
+
+var mathbox_get_data_line = function(x)
+{
+	return (mathbox_data_max_depth + mathbox_data_index + x - 1) % mathbox_data_max_depth;
+}
+
+var mathbox_data_index_valid = function(x)
+{
+	return x>mathbox_data_max_depth-mathbox_data_current_depth;
+}
+
+
+
 function waterfall_add(data)
 {
 	if(!waterfall_setup_done) return;
@@ -1850,6 +1945,14 @@ function waterfall_add(data)
 			waterfall_image.data[base+x*4+i] = ((color>>>0)>>((3-i)*8))&0xff;
 	}*/
 
+	if(mathbox_mode==MATHBOX_MODES.WATERFALL)
+	{
+		//Handle mathbox
+		for(var i=0;i<fft_size;i++) mathbox_data[i+mathbox_data_index*fft_size]=data[i];
+		mathbox_shift();
+	}
+	else
+	{
 	//Add line to waterfall image
 	oneline_image = canvas_context.createImageData(w,1);
 	for(x=0;x<w;x++)
@@ -1859,13 +1962,13 @@ function waterfall_add(data)
 			oneline_image.data[x*4+i] = ((color>>>0)>>((3-i)*8))&0xff;
 	}
 
-
 	//Draw image
 	canvas_context.putImageData(oneline_image, 0, canvas_actual_line--);
 	shift_canvases();
 	if(canvas_actual_line<0) add_canvas();
+	}
+
 
-	//divlog("Drawn FFT");
 }
 
 /*
@@ -1895,6 +1998,180 @@ function check_top_bar_congestion()
 
 }
 
+var MATHBOX_MODES =
+{
+	UNINITIALIZED: 0,
+	NONE: 1,
+	WATERFALL: 2,
+	CONSTELLATION: 3
+};
+var mathbox_mode = MATHBOX_MODES.UNINITIALIZED;
+var mathbox;
+var mathbox_element;
+
+function mathbox_init()
+{
+	//mathbox_waterfall_history_length is defined in the config
+	mathbox_data_max_depth = fft_fps * mathbox_waterfall_history_length; //how many lines can the buffer store
+	mathbox_data_current_depth = 0; //how many lines are in the buffer currently
+	mathbox_data_index = 0; //the index of the last empty line / the line to be overwritten
+	mathbox_data = new Float32Array(fft_size * mathbox_data_max_depth);
+	mathbox_data_global_index = 0;
+	mathbox_correction_for_z = 0;
+
+	mathbox = mathBox({
+      plugins: ['core', 'controls', 'cursor', 'stats'],
+      controls: { klass: THREE.OrbitControls },
+    });
+    three = mathbox.three;
+    if(typeof three == "undefined") divlog("3D waterfall cannot be initialized because WebGL is not supported in your browser.", true);
+
+    three.renderer.setClearColor(new THREE.Color(0x808080), 1.0);
+	mathbox_container.appendChild((mathbox_element=three.renderer.domElement));
+    view = mathbox
+    .set({
+      scale: 1080,
+      focus: 3,
+    })
+    .camera({
+      proxy: true,
+      position: [-2, 1, 3],
+    })
+    .cartesian({
+      range: [[-1, 1], [0, 1], [0, 1]],
+      scale: [2, 2/3, 1],
+    });
+
+    view.axis({
+      axis: 1,
+      width: 3,
+	  color: "#fff",
+  });
+    view.axis({
+      axis: 2,
+      width: 3,
+	  color: "#fff",
+	  //offset: [0, 0, 0],
+  });
+    view.axis({
+      axis: 3,
+      width: 3,
+	  color: "#fff",
+  });
+
+    view.grid({
+      width: 2,
+      opacity: 0.5,
+      axes: [1, 3],
+      zOrder: 1,
+	  color: "#fff",
+    });
+
+    //var remap = function (v) { return Math.sqrt(.5 + .5 * v); };
+
+
+	var remap = function(x,z,t)
+	{
+		var currentTimePos = mathbox_data_global_index/(fft_fps*1.0);
+		var realZAdd = (-(t-currentTimePos)/mathbox_waterfall_history_length);
+		var zAdd = realZAdd - mathbox_correction_for_z;
+		if(zAdd<-0.2 || zAdd>0.2) { mathbox_correction_for_z = realZAdd; }
+
+		var xIndex = Math.trunc(((x+1)/2.0)*fft_size); //x: frequency
+		var zIndex = Math.trunc(z*(mathbox_data_max_depth-1)); //z: time
+		var realZIndex = mathbox_get_data_line(zIndex);
+		if(!mathbox_data_index_valid(zIndex)) return {y: undefined, dBValue: undefined, zAdd: 0 };
+		//if(realZIndex>=(mathbox_data_max_depth-1)) console.log("realZIndexundef", realZIndex, zIndex);
+		var index = Math.trunc(xIndex + realZIndex * fft_size);
+		/*if(mathbox_data[index]==undefined) console.log("Undef", index, mathbox_data.length, zIndex,
+				realZIndex, mathbox_data_max_depth,
+				mathbox_data_current_depth, mathbox_data_index);*/
+		var dBValue = mathbox_data[index];
+		//y=1;
+		if(dBValue>waterfall_max_level) y = 1;
+		else if(dBValue<waterfall_min_level) y = 0;
+		else y = (dBValue-waterfall_min_level)/(waterfall_max_level-waterfall_min_level);
+		mathbox_dbg = { dbv: dBValue, indexval: index, mbd: mathbox_data.length, yval: y };
+		if(!y) y=0;
+		return {y: y, dBValue: dBValue, zAdd: zAdd};
+	}
+
+    var points = view.area({
+      expr: function (emit, x, z, i, j, t) {
+		var y;
+		remapResult=remap(x,z,t);
+		if((y=remapResult.y)==undefined) return;
+        emit(x, y, z+remapResult.zAdd);
+      },
+      width:  mathbox_waterfall_frequency_resolution,
+      height: mathbox_data_max_depth - 1,
+      channels: 3,
+      axes: [1, 3],
+    });
+
+    var colors = view.area({
+      expr: function (emit, x, z, i, j, t) {
+		var dBValue;
+		if((dBValue=remap(x,z,t).dBValue)==undefined) return;
+		var color=waterfall_mkcolor(dBValue, mathbox_waterfall_colors);
+        var b = (color&0xff)/255.0;
+        var g = ((color&0xff00)>>8)/255.0;
+        var r = ((color&0xff0000)>>16)/255.0;
+        emit(r, g, b, 1.0);
+      },
+      width:  mathbox_waterfall_frequency_resolution,
+      height: mathbox_data_max_depth - 1,
+      channels: 4,
+      axes: [1, 3],
+    });
+
+    view.surface({
+      shaded: true,
+      points: '<<',
+      colors: '<',
+      color: 0xFFFFFF,
+    });
+
+    view.surface({
+      fill: false,
+      lineX: false,
+      lineY: false,
+      points: '<<',
+      colors: '<',
+      color: 0xFFFFFF,
+      width: 2,
+      blending: 'add',
+      opacity: .25,
+      zBias: 5,
+    });
+	mathbox_mode = MATHBOX_MODES.NONE;
+
+	//mathbox_element.style.width="100%";
+	//mathbox_element.style.height="100%";
+
+}
+
+function mathbox_toggle()
+{
+
+	if(mathbox_mode == MATHBOX_MODES.UNINITIALIZED) mathbox_init();
+	mathbox_mode = (mathbox_mode == MATHBOX_MODES.NONE) ? MATHBOX_MODES.WATERFALL : MATHBOX_MODES.NONE;
+	mathbox_container.style.display = (mathbox_mode == MATHBOX_MODES.WATERFALL) ? "block" : "none";
+	mathbox_clear_data();
+	waterfall_clear();
+}
+
+function waterfall_clear()
+{
+	while(canvases.length) //delete all canvases
+	{
+		var x=canvases.shift();
+		x.parentNode.removeChild(x);
+		delete x;
+	}
+	add_canvas();
+}
+
 function openwebrx_resize()
 {
 	resize_canvases();
@@ -1909,6 +2186,7 @@ function openwebrx_init()
 	(opb=e("openwebrx-play-button-text")).style.marginTop=(window.innerHeight/2-opb.clientHeight/2).toString()+"px";
 	init_rx_photo();
 	open_websocket();
+    secondary_demod_init();
 	place_panels(first_show_panel);
 	window.setTimeout(function(){window.setInterval(debug_audio,1000);},1000);
 	window.addEventListener("resize",openwebrx_resize);
@@ -2002,9 +2280,14 @@ function pop_bottommost_panel(from)
 	return to_return;
 }
 
-function toggle_panel(what)
+function toggle_panel(what, on)
 {
     var item=e(what);
+    if(typeof on !== "undefined") 
+    {
+        if(item.openwebrxHidden && !on) return;
+        if(!item.openwebrxHidden && on) return;
+    }
 	if(item.openwebrxDisableClick) return;
 	item.style.transitionDuration="599ms";
 	item.style.transitionDelay="0ms";
@@ -2093,6 +2376,7 @@ function place_panels(function_apply)
 		p.style.visibility="visible";
 		y+=p.openwebrxPanelHeight+((p.openwebrxPanelTransparent)?0:3)*panel_margin;
 		if(function_apply) function_apply(p);
+        //console.log(p.id, y, p.openwebrxPanelTransparent);
 	}
 	y=hoffset;
 	while(right_col.length>0)
@@ -2125,3 +2409,331 @@ function progressbar_set(obj,val,text,over)
 	if(innerText==null) return;
 	innerText.innerHTML=text;
 }
+
+function demodulator_buttons_update()
+{
+	$(".openwebrx-demodulator-button").removeClass("highlighted");
+    if(secondary_demod) $("#openwebrx-button-dig").addClass("highlighted");
+    else switch(demodulators[0].subtype)
+	{
+	case "nfm":
+		$("#openwebrx-button-nfm").addClass("highlighted");
+		break;
+	case "am":
+		$("#openwebrx-button-am").addClass("highlighted");
+		break;
+	case "lsb":
+	case "usb":
+	case "cw":
+		if(demodulators[0].high_cut-demodulators[0].low_cut<300)
+			$("#openwebrx-button-cw").addClass("highlighted");
+		else
+		{
+			if(demodulators[0].high_cut<0) 
+				$("#openwebrx-button-lsb").addClass("highlighted");
+			else if(demodulators[0].low_cut>0) 
+				$("#openwebrx-button-usb").addClass("highlighted");
+			else $("#openwebrx-button-lsb, #openwebrx-button-usb").addClass("highlighted");
+		}
+		break;
+	}
+}
+function demodulator_analog_replace_last() { demodulator_analog_replace(last_analog_demodulator_subtype); }
+
+/*
+  _____  _       _                     _           
+ |  __ \(_)     (_)                   | |          
+ | |  | |_  __ _ _ _ __ ___   ___   __| | ___  ___ 
+ | |  | | |/ _` | | '_ ` _ \ / _ \ / _` |/ _ \/ __|
+ | |__| | | (_| | | | | | | | (_) | (_| |  __/\__ \
+ |_____/|_|\__, |_|_| |_| |_|\___/ \__,_|\___||___/
+            __/ |                                  
+           |___/                                   
+*/
+
+secondary_demod = false;
+secondary_demod_offset_freq = 0;
+secondary_demod_waterfall_queue = [];
+
+function demodulator_digital_replace_last() 
+{ 
+    demodulator_digital_replace(last_digital_demodulator_subtype); 
+    secondary_demod_listbox_update();
+}
+function demodulator_digital_replace(subtype)
+{
+    switch(subtype) 
+    {
+    case "bpsk31":
+    case "rtty":
+        secondary_demod_start(subtype);
+        demodulator_analog_replace('usb', true);
+        demodulator_buttons_update();
+        break;
+    }
+    toggle_panel("openwebrx-panel-digimodes", true);
+}
+
+function secondary_demod_create_canvas()
+{
+	var new_canvas = document.createElement("canvas");
+	new_canvas.width=secondary_fft_size;
+	new_canvas.height=$(secondary_demod_canvas_container).height();
+	new_canvas.style.width=$(secondary_demod_canvas_container).width()+"px";
+	new_canvas.style.height=$(secondary_demod_canvas_container).height()+"px";
+    console.log(new_canvas.width, new_canvas.height, new_canvas.style.width, new_canvas.style.height);
+	secondary_demod_current_canvas_actual_line=new_canvas.height-1;
+	$(secondary_demod_canvas_container).children().last().before(new_canvas);
+    return new_canvas;
+}
+
+function secondary_demod_remove_canvases()
+{
+    $(secondary_demod_canvas_container).children("canvas").remove();
+}
+
+function secondary_demod_init_canvases()
+{
+    secondary_demod_remove_canvases();
+    secondary_demod_canvases=[];
+    secondary_demod_canvases.push(secondary_demod_create_canvas());
+    secondary_demod_canvases.push(secondary_demod_create_canvas());
+    secondary_demod_canvases[0].openwebrx_top=-$(secondary_demod_canvas_container).height();
+    secondary_demod_canvases[1].openwebrx_top=0;
+    secondary_demod_canvases_update_top();
+    secondary_demod_current_canvas_context = secondary_demod_canvases[0].getContext("2d");
+    secondary_demod_current_canvas_actual_line=$(secondary_demod_canvas_container).height()-1;
+    secondary_demod_current_canvas_index=0;
+    secondary_demod_canvases_initialized=true;
+    //secondary_demod_update_channel_freq_from_event();
+    mkscale(); //so that the secondary waterfall zoom level will be initialized
+}
+
+function secondary_demod_canvases_update_top()
+{
+    for(var i=0;i<2;i++) secondary_demod_canvases[i].style.top=secondary_demod_canvases[i].openwebrx_top+"px";
+}
+
+function secondary_demod_swap_canvases()
+{
+    console.log("swap");
+    secondary_demod_canvases[0+!secondary_demod_current_canvas_index].openwebrx_top-=$(secondary_demod_canvas_container).height()*2;
+    secondary_demod_current_canvas_index=0+!secondary_demod_current_canvas_index;
+    secondary_demod_current_canvas_context = secondary_demod_canvases[secondary_demod_current_canvas_index].getContext("2d");
+    secondary_demod_current_canvas_actual_line=$(secondary_demod_canvas_container).height()-1;
+}
+
+function secondary_demod_init()
+{
+    $("#openwebrx-panel-digimodes")[0].openwebrxHidden = true;
+    secondary_demod_canvas_container = $("#openwebrx-digimode-canvas-container")[0];
+    $(secondary_demod_canvas_container)
+        .mousemove(secondary_demod_canvas_container_mousemove)
+        .mouseup(secondary_demod_canvas_container_mouseup)
+        .mousedown(secondary_demod_canvas_container_mousedown)
+        .mouseenter(secondary_demod_canvas_container_mousein)
+        .mouseleave(secondary_demod_canvas_container_mouseout);
+}
+
+function secondary_demod_start(subtype) 
+{ 
+    secondary_demod_canvases_initialized = false;
+    ws.send("SET secondary_mod="+subtype); 
+    secondary_demod = subtype; 
+}
+
+function secondary_demod_set()
+{
+    ws.send("SET secondary_offset_freq="+secondary_demod_offset_freq.toString());
+}
+
+function secondary_demod_stop()
+{
+    ws.send("SET secondary_mod=off");
+    secondary_demod = false; 
+    secondary_demod_waterfall_queue = [];
+}
+
+function secondary_demod_waterfall_add_queue(x)
+{
+    secondary_demod_waterfall_queue.push(x);
+}
+
+function secondary_demod_push_binary_data(x)
+{
+    secondary_demod_push_data(Array.from(x).map( y => (y)?"1":"0" ).join(""));
+}
+
+function secondary_demod_push_data(x)
+{
+    x=Array.from(x).map((y)=>{
+        var c=y.charCodeAt(0);
+        if(y=="\r") return "&nbsp;";
+        if(y=="\n") return "&nbsp;";
+        //if(y=="\n") return "<br />";
+        if(c<32||c>126) return "";
+        if(y=="&") return "&amp;";
+        if(y=="<") return "&lt;";
+        if(y==">") return "&gt;";
+        if(y==" ") return "&nbsp;";
+        return y;
+    }).join("");
+    $("#openwebrx-cursor-blink").before("<span class=\"part\"><span class=\"subpart\">"+x+"</span></span>");
+}
+
+function secondary_demod_data_clear()
+{
+    $("#openwebrx-cursor-blink").prevAll().remove();
+}
+
+function secondary_demod_close_window()
+{
+    secondary_demod_stop();
+    toggle_panel("openwebrx-panel-digimodes", false);
+}
+
+secondary_demod_fft_offset_db=30; //need to calculate that later
+
+function secondary_demod_waterfall_add(data)
+{
+    if(!secondary_demod) return;
+	var w=secondary_fft_size;
+
+	//Add line to waterfall image
+	var oneline_image = secondary_demod_current_canvas_context.createImageData(w,1);
+	for(x=0;x<w;x++)
+	{
+		var color=waterfall_mkcolor(data[x]+secondary_demod_fft_offset_db);
+		for(i=0;i<4;i++) oneline_image.data[x*4+i] = ((color>>>0)>>((3-i)*8))&0xff;
+	}
+
+	//Draw image
+	secondary_demod_current_canvas_context.putImageData(oneline_image, 0, secondary_demod_current_canvas_actual_line--);
+    secondary_demod_canvases.map((x)=>{x.openwebrx_top += 1;});
+    secondary_demod_canvases_update_top();
+	if(secondary_demod_current_canvas_actual_line<0) secondary_demod_swap_canvases();
+}
+
+var secondary_demod_canvases_initialized = false;
+
+function secondary_demod_waterfall_dequeue()
+{
+    if(!secondary_demod || !secondary_demod_canvases_initialized) return;
+	if(secondary_demod_waterfall_queue.length) secondary_demod_waterfall_add(secondary_demod_waterfall_queue.shift());
+	if(secondary_demod_waterfall_queue.length>Math.max(fft_fps/2,20)) //in case of fft overflow
+	{
+		console.log("secondary waterfall overflow, queue length:", secondary_demod_waterfall_queue.length);
+		while(secondary_demod_waterfall_queue.length) secondary_demod_waterfall_add(secondary_demod_waterfall_queue.shift());
+	}
+} 
+
+secondary_demod_listbox_updating = false;
+function secondary_demod_listbox_changed()
+{
+    if(secondary_demod_listbox_updating) return;
+    switch ($("#openwebrx-secondary-demod-listbox")[0].value)
+    {
+        case "none":
+            demodulator_analog_replace_last();
+            break;
+        case "bpsk31":
+            demodulator_digital_replace('bpsk31');
+            break;
+        case "rtty":
+            demodulator_digital_replace('rtty');
+            break;
+    }
+}
+
+function secondary_demod_listbox_update()
+{
+    secondary_demod_listbox_updating = true;
+    $("#openwebrx-secondary-demod-listbox").val((secondary_demod)?secondary_demod:"none");
+    console.log("update");
+    secondary_demod_listbox_updating = false;
+}
+
+secondary_demod_channel_freq=1000;
+function secondary_demod_update_marker()
+{
+    var width =  Math.max( (secondary_bw / (if_samp_rate/2)) * secondary_demod_canvas_width, 5);
+    var center_at = (secondary_demod_channel_freq / (if_samp_rate/2)) * secondary_demod_canvas_width + secondary_demod_canvas_left;
+    var left = center_at-width/2;
+    //console.log("sdum", width, left);
+    $("#openwebrx-digimode-select-channel").width(width).css("left",left+"px") 
+}
+
+secondary_demod_waiting_for_set = false;
+function secondary_demod_update_channel_freq_from_event(evt)
+{
+    if(typeof evt !== "undefined")
+    {
+        var relativeX=(evt.offsetX)?evt.offsetX:evt.layerX;
+        secondary_demod_channel_freq=secondary_demod_low_cut + 
+            (relativeX/$(secondary_demod_canvas_container).width()) * (secondary_demod_high_cut-secondary_demod_low_cut);
+    }
+    //console.log("toset:", secondary_demod_channel_freq);
+    if(!secondary_demod_waiting_for_set)
+    {
+        secondary_demod_waiting_for_set = true;
+        window.setTimeout(()=>{
+            ws.send("SET secondary_offset_freq="+Math.floor(secondary_demod_channel_freq));
+            //console.log("doneset:", secondary_demod_channel_freq);
+            secondary_demod_waiting_for_set = false;
+        }, 50);
+    }
+    secondary_demod_update_marker();
+}
+
+secondary_demod_mousedown=false;
+function secondary_demod_canvas_container_mousein()
+{
+    $("#openwebrx-digimode-select-channel").css("opacity","0.7"); //.css("border-width", "1px");
+}
+
+function secondary_demod_canvas_container_mouseout()
+{
+    $("#openwebrx-digimode-select-channel").css("opacity","0");
+}
+
+function secondary_demod_canvas_container_mousemove(evt)
+{
+    if(secondary_demod_mousedown) secondary_demod_update_channel_freq_from_event(evt);
+}
+
+function secondary_demod_canvas_container_mousedown(evt)
+{
+    if(evt.which==1) secondary_demod_mousedown=true;
+}
+
+function secondary_demod_canvas_container_mouseup(evt)
+{
+    if(evt.which==1) secondary_demod_mousedown=false;
+    secondary_demod_update_channel_freq_from_event(evt);
+}
+
+
+function secondary_demod_waterfall_set_zoom(low_cut, high_cut)
+{
+    if(!secondary_demod || !secondary_demod_canvases_initialized) return;
+    if(low_cut<0 && high_cut<0)
+    {
+        var hctmp = high_cut;
+        var lctmp = low_cut;
+        low_cut = -hctmp;
+        low_cut = -lctmp;
+    }
+    else if(low_cut<0 && high_cut>0)
+    {
+        high_cut=Math.max(Math.abs(high_cut), Math.abs(low_cut));
+        low_cut=0;
+    }
+    secondary_demod_low_cut = low_cut;
+    secondary_demod_high_cut = high_cut;
+    var shown_bw = high_cut-low_cut;
+    secondary_demod_canvas_width = $(secondary_demod_canvas_container).width()  * (if_samp_rate/2)/shown_bw;
+    secondary_demod_canvas_left = -secondary_demod_canvas_width*(low_cut/(if_samp_rate/2));
+    //console.log("setzoom", secondary_demod_canvas_width, secondary_demod_canvas_left, low_cut, high_cut);
+    secondary_demod_canvases.map((x)=>{$(x).css("left",secondary_demod_canvas_left+"px").css("width",secondary_demod_canvas_width+"px");});
+    secondary_demod_update_channel_freq_from_event();
+}

openwebrx.py

@@ -20,14 +20,13 @@ print "" # python2.7 is required to run OpenWebRX instead of python3. Please run
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 """
-sw_version="v0.15"
+sw_version="v0.17"
 #0.15 (added nmux)
 
 import os
 import code
 import importlib
-import plugins
+import csdr
-import plugins.dsp
 import thread
 import time
 import datetime
@@ -63,6 +62,7 @@ try: import __pypy__
 except: pass
 pypy="__pypy__" in globals()
 
+"""
 def import_all_plugins(directory):
     for subdir in os.listdir(directory):
         if os.path.isdir(directory+subdir) and not subdir[0]=="_":
@@ -71,6 +71,7 @@ def import_all_plugins(directory):
                 importname=(directory+subdir+"/plugin").replace("/",".")
                 print "[openwebrx-import] Found plugin:",importname
                 importlib.import_module(importname)
+"""
 
 class MultiThreadHTTPServer(ThreadingMixIn, HTTPServer):
     pass
@@ -91,7 +92,8 @@ def handle_signal(sig, frame):
             print
             for key in client._fields:
                 print "\t%s = %s"%(key,str(getattr(client,key)))
-
+    elif sig == signal.SIGUSR2:
+        code.interact(local=globals())
     else:
         print "[openwebrx] Ctrl+C: aborting."
         cleanup_clients(True)
@@ -127,9 +129,7 @@ def main():
     #Set signal handler
     signal.signal(signal.SIGINT, handle_signal) #http://stackoverflow.com/questions/1112343/how-do-i-capture-sigint-in-python
     signal.signal(signal.SIGUSR1, handle_signal)
-
+    signal.signal(signal.SIGUSR2, handle_signal)
-	#Load plugins
-	import_all_plugins("plugins/dsp/")
 
     #Pypy
     if pypy: print "pypy detected (and now something completely different: c code is expected to run at a speed of 3*10^8 m/s?)"
@@ -292,7 +292,7 @@ def apply_csdr_cfg_to_dsp(dsp):
 
 def spectrum_thread_function():
     global clients, spectrum_dsp, spectrum_thread_watchdog_last_tick
-	spectrum_dsp=dsp=getattr(plugins.dsp,cfg.dsp_plugin).plugin.dsp_plugin()
+    spectrum_dsp=dsp=csdr.dsp()
     dsp.nc_port=cfg.iq_server_port
     dsp.set_demodulator("fft")
     dsp.set_samp_rate(cfg.samp_rate)
@@ -427,6 +427,7 @@ class WebRXHandler(BaseHTTPRequestHandler):
             # there's even another cool tip at http://stackoverflow.com/questions/4419650/how-to-implement-timeout-in-basehttpserver-basehttprequesthandler-python
             #if self.path[:5]=="/lock": cma("do_GET /lock/") # to test mutex_watchdog_thread. Do not uncomment in production environment!
             if self.path[:4]=="/ws/":
+                print "[openwebrx-ws] Client requested WebSocket connection"
                 if receiver_failed: self.send_error(500,"Internal server error")
                 try:
                     # ========= WebSocket handshake  =========
@@ -459,21 +460,22 @@ class WebRXHandler(BaseHTTPRequestHandler):
                     rxws.send(self, "MSG center_freq={0} bandwidth={1} fft_size={2} fft_fps={3} audio_compression={4} fft_compression={5} max_clients={6} setup".format(str(cfg.shown_center_freq),str(cfg.samp_rate),cfg.fft_size,cfg.fft_fps,cfg.audio_compression,cfg.fft_compression,cfg.max_clients))
 
                     # ========= Initialize DSP =========
-					dsp=getattr(plugins.dsp,cfg.dsp_plugin).plugin.dsp_plugin()
+                    dsp=csdr.dsp()
                     dsp_initialized=False
                     dsp.set_audio_compression(cfg.audio_compression)
+                    dsp.set_fft_compression(cfg.fft_compression) #used by secondary chains
                     dsp.set_format_conversion(cfg.format_conversion)
                     dsp.set_offset_freq(0)
                     dsp.set_bpf(-4000,4000)
+                    dsp.set_secondary_fft_size(cfg.digimodes_fft_size)
                     dsp.nc_port=cfg.iq_server_port
                     apply_csdr_cfg_to_dsp(dsp)
                     myclient.dsp=dsp
-
+                    do_secondary_demod=False
                     access_log("Started streaming to client: "+self.client_address[0]+"#"+myclient.id+" (users now: "+str(len(clients))+")")
 
-					myclient.loopstat=0
-
                     while True:
+                        myclient.loopstat=0
                         if myclient.closed[0]:
                             print "[openwebrx-httpd:ws] client closed by other thread"
                             break
@@ -514,12 +516,34 @@ class WebRXHandler(BaseHTTPRequestHandler):
                             rxws.send(self,myclient.bcastmsg)
                             myclient.bcastmsg=""
 
+                        # ========= send secondary =========
+                        if do_secondary_demod:
+                            myclient.loopstat=41
+                            while True:
+                                try: 
+                                    secondary_spectrum_data=dsp.read_secondary_fft(dsp.get_secondary_fft_bytes_to_read())
+                                    if len(secondary_spectrum_data) == 0: break
+                                    # print "len(secondary_spectrum_data)", len(secondary_spectrum_data) #TODO digimodes
+                                    rxws.send(self, secondary_spectrum_data, "FFTS")
+                                except: break
+                            myclient.loopstat=42
+                            while True:
+                                try:
+                                    myclient.loopstat=422
+                                    secondary_demod_data=dsp.read_secondary_demod(1)
+                                    myclient.loopstat=423
+                                    if len(secondary_demod_data) == 0: break
+                                    # print "len(secondary_demod_data)", len(secondary_demod_data), secondary_demod_data #TODO digimodes
+                                    rxws.send(self, secondary_demod_data, "DAT ")
+                                except: break
+
                         # ========= process commands =========
                         while True:
                             myclient.loopstat=50
                             rdata=rxws.recv(self, False)
-							if not rdata: break
+                            myclient.loopstat=51
                             #try:
+                            if not rdata: break
                             elif rdata[:3]=="SET":
                                 print "[openwebrx-httpd:ws,%d] command: %s"%(client_i,rdata)
                                 pairs=rdata[4:].split(" ")
@@ -528,13 +552,13 @@ class WebRXHandler(BaseHTTPRequestHandler):
                                 filter_limit=dsp.get_output_rate()/2
                                 for pair in pairs:
                                     param_name, param_value = pair.split("=")
-									if param_name == "low_cut" and -filter_limit <= float(param_value) <= filter_limit:
+                                    if param_name == "low_cut" and -filter_limit <= int(param_value) <= filter_limit:
                                         bpf_set=True
                                         new_bpf[0]=int(param_value)
-									elif param_name == "high_cut" and -filter_limit <= float(param_value) <= filter_limit:
+                                    elif param_name == "high_cut" and -filter_limit <= int(param_value) <= filter_limit:
                                         bpf_set=True
                                         new_bpf[1]=int(param_value)
-									elif param_name == "offset_freq" and -cfg.samp_rate/2 <= float(param_value) <= cfg.samp_rate/2:
+                                    elif param_name == "offset_freq" and -cfg.samp_rate/2 <= int(param_value) <= cfg.samp_rate/2:
                                         myclient.loopstat=510
                                         dsp.set_offset_freq(int(param_value))
                                     elif param_name == "squelch_level" and float(param_value) >= 0:
@@ -557,6 +581,19 @@ class WebRXHandler(BaseHTTPRequestHandler):
                                             myclient.loopstat=550
                                             dsp.start()
                                             dsp_initialized=True
+                                    elif param_name=="secondary_mod" and cfg.digimodes_enable:
+                                        if (dsp.get_secondary_demodulator() != param_value):
+                                            if dsp_initialized: dsp.stop()
+                                            if param_value == "off":
+                                                dsp.set_secondary_demodulator(None)
+                                                do_secondary_demod = False
+                                            else:
+                                                dsp.set_secondary_demodulator(param_value)
+                                                do_secondary_demod = True
+                                                rxws.send(self, "MSG secondary_fft_size={0} if_samp_rate={1} secondary_bw={2} secondary_setup".format(cfg.digimodes_fft_size, dsp.if_samp_rate(), dsp.secondary_bw()))
+                                            if dsp_initialized: dsp.start()
+                                    elif param_name=="secondary_offset_freq" and 0 <= int(param_value) <= dsp.if_samp_rate()/2 and cfg.digimodes_enable:
+                                        dsp.set_secondary_offset_freq(int(param_value))
                                     else:
                                         print "[openwebrx-httpd:ws] invalid parameter"
                                 if bpf_set:
@@ -564,16 +601,20 @@ class WebRXHandler(BaseHTTPRequestHandler):
                                     dsp.set_bpf(*new_bpf)
                                 #code.interact(local=locals())
                 except:
+                    myclient.loopstat=990
                     exc_type, exc_value, exc_traceback = sys.exc_info()
-					if exc_value[0]==32: #"broken pipe", client disconnected
+                    print "[openwebrx-httpd:ws] exception: ",exc_type,exc_value
-						pass
+                    traceback.print_tb(exc_traceback) #TODO digimodes
-					elif exc_value[0]==11: #"resource unavailable" on recv, client disconnected
+                    #if exc_value[0]==32: #"broken pipe", client disconnected
-						pass
+                    #    pass
-					else:
+                    #elif exc_value[0]==11: #"resource unavailable" on recv, client disconnected
-						print "[openwebrx-httpd] error in /ws/ handler: ",exc_type,exc_value
+                    #    pass
-						traceback.print_tb(exc_traceback)
+                    #else:
+                    #    print "[openwebrx-httpd] error in /ws/ handler: ",exc_type,exc_value
+                    #    traceback.print_tb(exc_traceback)
 
                 #stop dsp for the disconnected client
+                myclient.loopstat=991
                 try:
                     dsp.stop()
                     del dsp
@@ -581,6 +622,7 @@ class WebRXHandler(BaseHTTPRequestHandler):
                     print "[openwebrx-httpd] error in dsp.stop()"
 
                 #delete disconnected client
+                myclient.loopstat=992
                 try:
                     cma("do_GET /ws/ delete disconnected")
                     id_to_close=get_client_by_id(myclient.id,False)
@@ -644,7 +686,11 @@ class WebRXHandler(BaseHTTPRequestHandler):
                         ("%[WATERFALL_COLORS]",cfg.waterfall_colors),
                         ("%[WATERFALL_MIN_LEVEL]",str(cfg.waterfall_min_level)),
                         ("%[WATERFALL_MAX_LEVEL]",str(cfg.waterfall_max_level)),
-						("%[WATERFALL_AUTO_LEVEL_MARGIN]","[%d,%d]"%cfg.waterfall_auto_level_margin)
+                        ("%[WATERFALL_AUTO_LEVEL_MARGIN]","[%d,%d]"%cfg.waterfall_auto_level_margin),
+                        ("%[DIGIMODES_ENABLE]",("true" if cfg.digimodes_enable else "false")),
+                        ("%[MATHBOX_WATERFALL_FRES]",str(cfg.mathbox_waterfall_frequency_resolution)),
+                        ("%[MATHBOX_WATERFALL_THIST]",str(cfg.mathbox_waterfall_history_length)),
+                        ("%[MATHBOX_WATERFALL_COLORS]",cfg.mathbox_waterfall_colors)
                     )
                     for rule in replace_dictionary:
                         while data.find(rule[0])!=-1:

plugins/dsp/csdr/plugin.py

@@ -1,251 +0,0 @@
-"""
-OpenWebRX csdr plugin: do the signal processing with csdr
-
-	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>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as
-    published by the Free Software Foundation, either version 3 of the
-    License, or (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-"""
-
-import subprocess
-import time
-import os
-import code
-import signal
-import fcntl
-
-class dsp_plugin:
-
-	def __init__(self):
-		self.samp_rate = 250000
-		self.output_rate = 11025 #this is default, and cannot be set at the moment
-		self.fft_size = 1024
-		self.fft_fps = 5
-		self.offset_freq = 0
-		self.low_cut = -4000
-		self.high_cut = 4000
-		self.bpf_transition_bw = 320 #Hz, and this is a constant
-		self.ddc_transition_bw_rate = 0.15 # of the IF sample rate
-		self.running = False
-		self.audio_compression = "none"
-		self.fft_compression = "none"
-		self.demodulator = "nfm"
-		self.name = "csdr"
-		self.format_conversion = "csdr convert_u8_f"
-		self.base_bufsize = 512
-		self.nc_port = 4951
-		self.csdr_dynamic_bufsize = False
-		self.csdr_print_bufsizes = False
-		self.csdr_through = False
-		self.squelch_level = 0
-		self.fft_averages = 50
-
-	def chain(self,which):
-		any_chain_base="nc -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":
-			fft_chain_base = any_chain_base+"csdr fft_cc {fft_size} {fft_block_size} | " + \
-				("csdr logpower_cf -70 | " if self.fft_averages == 0 else "csdr logaveragepower_cf -70 {fft_size} {fft_averages} | ") + \
-				"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 | 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 old_fractional_decimator_ff {last_decimation} | csdr deemphasis_nfm_ff 11025 | csdr fastagc_ff 1024 | csdr convert_f_s16"+chain_end
-		elif which == "am": return chain_begin + "csdr amdemod_cf | csdr fastdcblock_ff | csdr old_fractional_decimator_ff {last_decimation} | csdr agc_ff | csdr limit_ff | csdr convert_f_s16"+chain_end
-		elif which == "ssb": return chain_begin + "csdr realpart_cf | csdr old_fractional_decimator_ff {last_decimation} | csdr agc_ff | csdr limit_ff | csdr convert_f_s16"+chain_end
-
-	def set_audio_compression(self,what):
-		self.audio_compression = what
-
-	def set_fft_compression(self,what):
-		self.fft_compression = what
-
-	def get_fft_bytes_to_read(self):
-		if self.fft_compression=="none": return self.fft_size*4
-		if self.fft_compression=="adpcm": return (self.fft_size/2)+(10/2)
-
-	def set_samp_rate(self,samp_rate):
-		#to change this, restart is required
-		self.samp_rate=samp_rate
-		self.decimation=1
-		while self.samp_rate/(self.decimation+1)>self.output_rate:
-			self.decimation+=1
-		self.last_decimation=float(self.if_samp_rate())/self.output_rate
-
-	def if_samp_rate(self):
-		return self.samp_rate/self.decimation
-
-	def get_name(self):
-		return self.name
-
-	def get_output_rate(self):
-		return self.output_rate
-
-	def set_output_rate(self,output_rate):
-		self.output_rate=output_rate
-		self.set_samp_rate(self.samp_rate) #as it depends on output_rate
-
-	def set_demodulator(self,demodulator):
-		#to change this, restart is required
-		self.demodulator=demodulator
-
-	def get_demodulator(self):
-		return self.demodulator
-
-	def set_fft_size(self,fft_size):
-		#to change this, restart is required
-		self.fft_size=fft_size
-
-	def set_fft_fps(self,fft_fps):
-		#to change this, restart is required
-		self.fft_fps=fft_fps
-
-	def set_fft_averages(self,fft_averages):
-		#to change this, restart is required
-		self.fft_averages=fft_averages
-
-	def fft_block_size(self):
-		if self.fft_averages == 0: return self.samp_rate/self.fft_fps
-		else: return self.samp_rate/self.fft_fps/self.fft_averages
-
-	def set_format_conversion(self,format_conversion):
-		self.format_conversion=format_conversion
-
-	def set_offset_freq(self,offset_freq):
-		self.offset_freq=offset_freq
-		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:
-			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)
-
-	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 = 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(), 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 )
-
-		print "[openwebrx-dsp-plugin:csdr] Command =",command
-		#code.interact(local=locals())
-		my_env=os.environ.copy()
-		if self.csdr_dynamic_bufsize: my_env["CSDR_DYNAMIC_BUFSIZE_ON"]="1";
-		if self.csdr_print_bufsizes: my_env["CSDR_PRINT_BUFSIZES"]="1";
-		self.process = subprocess.Popen(command, stdout=subprocess.PIPE, shell=True, preexec_fn=os.setpgrp, env=my_env)
-		self.running = True
-
-		#open control pipes for csdr and send initialization data
-		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:
-			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)
-		#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)
-		#
-		#	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
-		if self.shift_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):
-		self.stop()
-		self.start()
-
-	def __del__(self):
-		self.stop()
-		del(self.process)

sdrhu.py

@@ -48,4 +48,3 @@ def run(continuously=True):
 if __name__=="__main__":
     run(False)
 
-