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Add support for prompt and restoring alsa settings #23

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Add support for prompt and restoring alsa settings #23

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5 changes: 4 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ If you want to have your IP address printed on startup, install `jq` and `ip`.
sudo apt install iproute2 jq
```

Copy `mic_over_mumble` anywhere - it will use `~/.mic_over_Mumble` as configuration directory. Don't forget to make it executable (`chmod +x mic_over_mumble`).
Copy `mic_over_mumble` anywhere - it will use `~/.mic_over_Mumble` as configuration directory. Don't forget to make it executable (`chmod +x mic_over_mumble`). You may want to copy the executable to `/usr/local/bin/` for directly executing it without going into any specific directory.

Run `mic_over_mumble`. It will start the server on LAN, then start Mumble (if asked for nickname, enter anything other than SuperUser). Then connect your mobile device to the LAN server manually. Please note that Mumble mobile app [has some issues](https://github.com/pzmarzly/mic_over_mumble/issues/4#issuecomment-602817058).

Expand All @@ -42,3 +42,6 @@ Then, set up your programs to use either "Monitor_of_Mumble" or "VirtualMic" as
![Screenshot of OBS configuration](obs_screenshot.png)

If for some reason the script messes up your audio config, you can use `pulseaudio -k` to reload PA.

If your alsa settings get messed up after setting up virtualmic, store a backup of settings in `~/.config/asound.state` from which to restore settings after setting up the mic.

37 changes: 28 additions & 9 deletions mic_over_mumble
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Expand Up @@ -7,11 +7,17 @@ set -euo pipefail
# PAID = PulseAudio ID
# ID = PID / process ID

VAR_FOLDER="/var/run/user/$UID/mic_over_mumble"


main () {
set_up
echo "Press Return to shut down..."
read -n1 -s -r
shut_down
read -n1 -p "Set up the mic or close? (s/c): " todo
echo
case $todo in
s|S) set_up ;;
c|C) shut_down ;;
*) echo "What??" ;;
esac
}

prepare_env () {
Expand All @@ -38,10 +44,12 @@ run_mumble_client_wizard () {
}

set_up () {
mkdir "$VAR_FOLDER"
prepare_env
start_mumble_server
start_mumble_client
change_pa_config
restore_alsa_settings
echo "Done. Please use pavucontrol to ensure everything works."
print_ip
}
Expand All @@ -51,12 +59,13 @@ shut_down () {
stop_murmur_client
stop_murmur_server
restore_pa_config
rm -r "$VAR_FOLDER"
}

start_mumble_client () {
echo "Starting Mumble client (a window should appear in a moment)..."
mumble "mumble://localhost" >/dev/null 2>&1 &
MUMBLE_CLIENT_ID=$!
echo "$!" > "$VAR_FOLDER/pid"
# FIXME: I don't remember why I thought this
# was necessary.
disown
Expand All @@ -69,7 +78,7 @@ start_mumble_client () {

stop_murmur_client () {
echo "Stopping Mumble client..."
kill -KILL "$MUMBLE_CLIENT_ID" || true
kill -KILL $(<"$VAR_FOLDER/pid") || true
sleep 2
}

Expand Down Expand Up @@ -111,10 +120,12 @@ add_sink () {
sink_properties=device.description=Loopback_of_Mumble)
sleep 1
SINK_PAID=$(get_sink_paid)
echo "$SINK_MODULE_PAID" > "$VAR_FOLDER/sink_module_paid"
echo "$SINK_PAID" > "$VAR_FOLDER/sink_paid"
}

remove_sink () {
pactl unload-module "$SINK_MODULE_PAID"
pactl unload-module $(<"$VAR_FOLDER/sink_module_paid")
}

add_source () {
Expand All @@ -124,15 +135,16 @@ add_source () {
source_name=VirtualMic \
master=Loopback_of_Mumble.monitor \
source_properties=device.description=VirtualMic)
echo "$SOURCE_MODULE_PAID" > "$VAR_FOLDER/source_module_paid"
}

remove_source () {
pactl unload-module "$SOURCE_MODULE_PAID"
pactl unload-module $(<"$VAR_FOLDER/source_module_paid")
}

move_mumble_to_sink () {
MUMBLE_CLIENT_PAID=$(get_mumble_client_paid)
pacmd move-sink-input "$MUMBLE_CLIENT_PAID" "$SINK_PAID"
pacmd move-sink-input "$MUMBLE_CLIENT_PAID" $(<"$VAR_FOLDER/sink_paid")
}

set_default_source () {
Expand Down Expand Up @@ -202,6 +214,13 @@ cut_active_device_indicator () {
cut -c 5-
}

restore_alsa_settings() {
if [ -f ~/.config/asound.state ]; then
echo "Restoring alsa settings"
alsactl --file ~/.config/asound.state restore
fi
}

print_ip () {
if ! [ -x "$(command -v ip)" ]; then
echo "Skipping IP printing: ip command not found..."
Expand Down