Add pulseaudio_record_from_everything.sh

diff --git a/pulseaudio_record_from_everything.sh b/pulseaudio_record_from_everything.sh
new file mode 100755 (executable)
index 0000000..ef923f5
--- /dev/null
+++ b/pulseaudio_record_from_everything.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+#
+# pulseaudio_record_from_anything - record from all sources with pulseaudio
+#
+# Copyright (C) 2018  Antonio Ospite <ao2@ao2.it>
+#
+# This program is free software. It comes without any warranty, to
+# the extent permitted by applicable law. You can redistribute it
+# and/or modify it under the terms of the Do What The Fuck You Want
+# To Public License, Version 2, as published by Sam Hocevar. See
+# http://sam.zoy.org/wtfpl/COPYING for more details.
+
+set -e
+
+command -v /usr/bin/parec > /dev/null || { echo "parec missing, install pulseaudio-utils" 1>&2; exit 1; }
+command -v /usr/bin/oggenc > /dev/null || { echo "oggenc missing, install vorbis-tools" 1>&2; exit 1; }
+
+if pactl list short sinks | grep -q module-null-sink;
+then
+  echo "The null sink is already loaded, bailing out." 1>&2
+  exit 1
+fi
+
+# Load the null sink.
+# It'll act as a "kitchen sink"... I'll show myself out.
+PA_IDS=$(pactl load-module module-null-sink)
+trap 'exit 1' INT
+trap 'trap INT; for pa_id in $PA_IDS; do pactl unload-module "$pa_id"; done' EXIT
+
+# Record from everything by redirecting any source to the null sink.
+SOURCES=$(pactl list short sources | cut -f 2 | grep -v '^null\.monitor$')
+for source in $SOURCES;
+do
+  MODULE_ID=$(pactl load-module module-loopback latency_msec=1 source="$source" sink=null)
+  PA_IDS="$MODULE_ID $PA_IDS"
+done
+
+# Listen to what you are recording.
+# NOTE: beware of Larsen effect when using microphones.
+#pactl load-module module-loopback source=null.monitor sink=@DEFAULT_SINK@
+
+# Un-mute the sink.
+pactl set-sink-mute null 0
+
+# Record everything.
+parec -d null.monitor | oggenc -b 192 -o "recording_output_$(date +"%F_%T").ogg" --raw -