liquidsoap thx boatbod

op25/gr-op25_repeater/apps/example_liquidsoap.liq

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+#!/usr/bin/liquidsoap
+
+# Example liquidsoap streaming from op25 to icecast
+# (c) 2019, 2020 gnorbury@bondcar.com, wllmbecks@gmail.com
+#
+
+set("log.stdout", true)
+set("log.file.path", "/home/pi/op25/op25/gr-op25_repeater/apps/liquidsoap.log")
+set("log.file", true)
+set("log.level", 3)
+
+# Make the native sample rate compatible with op25
+set("frame.audio.samplerate", 8000)
+
+# SOURCE INPUT BLOCK OPTIONS
+# Mono and stereo input sources are mutually exclusive. Choose type.		
+
+# Mono input source
+input = mksafe(input.external(buffer=0.25, channels=2, samplerate=8000, restart_on_error=false, "./audio.py -x 2 -s")) 
+# Consider increasing the buffer value on slow systems such as RPi3. e.g. buffer=0.25
+# Longer buffer results in less choppy audio but at the expense of increased latency.
+
+# Left channel input source and audio summing for two-slot protocols 
+#left = input.external(buffer=0.25, channels=2, samplerate=8000, restart_on_error=false, "./audio.py -u 23450 -x 2 -s")
+#left = audio_to_stereo(left)
+#left = stereo.pan(pan=1., left)
+
+# Right channel input source and audio summing for two-slot protocols
+#right = input.external(buffer=0.25, channels=2, samplerate=8000, restart_on_error=false, "./audio.py -u 23460 -x 2 -s")
+#right = audio_to_stereo(right)
+#right = stereo.pan(pan=-1., right)
+
+# OPTIONAL AUDIO SIGNAL PROCESSING BLOCKS
+# Uncomment to enable
+#
+# High pass filter mono
+input = filter.iir.butterworth.high(frequency = 200.0, order = 4, input)
+
+# High pass filter stereo
+#left = filter.iir.butterworth.high(frequency = 200.0, order = 4, left)
+#right = filter.iir.butterworth.high(frequency = 200.0, order = 4, right)
+
+# Low pass filter mono
+input = filter.iir.butterworth.low(frequency = 3250.0, order = 4, input)
+
+# Low pass filter stereo
+#left = filter.iir.butterworth.low(frequency = 3250.0, order = 4, left)
+#right = filter.iir.butterworth.low(frequency = 3250.0, order = 4, right)
+
+# Normalization mono
+input = normalize(input, gain_max = 3.0, gain_min = -3.0, target = -16.0, threshold = -40.0)
+
+# Normalization stereo -- Note -- Adjust target gains independently to achieve left/right balance 
+#left = normalize(left, gain_max = 3.0, gain_min = -3.0, target = -16.0, threshold = -40.0)
+#right = normalize(right, gain_max = 3.0, gain_min = -3.0, target = -16.0, threshold = -40.0)
+
+# Commnent out the line below for "non-stereo" (mono) output 
+#input = mksafe(add(normalize=false, [left,right]))
+
+# LOCAL AUDIO OUTPUT
+# Uncomment the line below to enable local sound
+#output.ao(input)
+
+# ICECAST STREAMING
+# Uncomment to enable output to an icecast server
+# Change the "host", "password", and "mount" strings appropriately first!
+# For metadata to work properly, the host address given here MUST MATCH the address in op25's meta.json file
+#
+# Mono Stream
+output.icecast(%mp3(bitrate=16, samplerate=22050, stereo=false), description="op25", genre="Public Safety", url="", fallible=false, icy_metadata="false", host="localhost", port=8000, mount="op25", password="hackme", mean(input))
+#
+# Stereo Stream
+#output.icecast(%mp3(bitrate=16, samplerate=22050, stereo=true), description="op25", genre="Public Safety", url="", fallible=false, icy_metadata="false", host="localhost", port=8000, mount="op25", password="hackme", input)

op25/gr-op25_repeater/apps/op25-liq.service

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+[Unit]
+Description=op25-liq
+After=syslog.target network.target nss-lookup.target network-online.target
+Requires=network-online.target
+
+[Service]
+User=1000
+Group=1000
+WorkingDirectory=/home/pi/op25/op25/gr-op25_repeater/apps
+ExecStart=/usr/bin/liquidsoap op25.liq
+RestartSec=5
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target

op25/gr-op25_repeater/apps/op25.liq

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+#!/usr/bin/liquidsoap
+
+# Example liquidsoap streaming from op25 to icecast
+# (c) 2019, 2020 gnorbury@bondcar.com, wllmbecks@gmail.com
+#
+
+set("log.stdout", true)
+set("log.file", false)
+set("log.level", 1)
+
+# Make the native sample rate compatible with op25
+set("frame.audio.samplerate", 8000)
+
+input = mksafe(input.external(buffer=0.02, channels=2, samplerate=8000, restart_on_error=false, "./audio.py -x 2 -s"))
+# Consider increasing the buffer value on slow systems such as RPi3. e.g. buffer=0.25
+# Longer buffer results in less choppy audio but at the expense of increased latency.
+
+
+
+# OPTIONAL AUDIO SIGNAL PROCESSING BLOCKS 
+# Uncomment to enable
+#
+# High pass filter
+#input = filter.iir.butterworth.high(frequency = 200.0, order = 4, input)
+
+# Low pass filter
+#input = filter.iir.butterworth.low(frequency = 3250.0, order = 4, input)
+
+# Normalization
+#input = normalize(input, gain_max = 3.0, gain_min = -3.0, target = -16.0, threshold = -40.0)
+
+
+
+# LOCAL AUDIO OUTPUT
+# Uncomment the appropriate line below to enable local sound
+#
+# Default audio subsystem
+out (input)
+#
+# PulseAudio
+#output.pulseaudio(input)
+#
+# ALSA
+#output.alsa(input)
+
+
+
+# ICECAST STREAMING
+# Uncomment to enable output to an icecast server
+# Change the "host", "password", and "mount" strings appropriately first!
+# For metadata to work properly, the host address given here MUST MATCH the address in op25's meta.json file
+#
+#output.icecast(%mp3(bitrate=16, samplerate=22050, stereo=false), description="op25", genre="Public Safety", url="", fallible=false, icy_metadata="false", host="localhost", port=8000, mount="mountpoint", password="hackme", mean(input))
+