From 63edb97a97e966e0e933b4d14f1b9b16932b8d12 Mon Sep 17 00:00:00 2001
From: SinTan1729 <sayantan.santra689@gmail.com>
Date: Fri, 14 Jan 2022 23:26:19 -0600
Subject: [PATCH] Added hdmi_sound_toggle.sh

---
 hdmi_sound_toggle.sh | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 hdmi_sound_toggle.sh

diff --git a/hdmi_sound_toggle.sh b/hdmi_sound_toggle.sh
new file mode 100644
index 0000000..cfe9133
--- /dev/null
+++ b/hdmi_sound_toggle.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+# This is a script to enable automatic switching to and from HDMI audio output
+# To run this script whenever and HDMI cable is connected, copy this file to /usr/local/bin/ and run 'chmod +x /usr/local/bin/hdmi_sound_toggle.sh'
+# Then create the file /etc/udev/rules.d/99-hdmi_sound.rules with the following content :
+# KERNEL=="card0", SUBSYSTEM=="drm", ACTION=="change", RUN+="/usr/local/bin/hdmi_sound_toggle.sh"
+# Then run 'udevadm control --reload-rules' and reboot
+# If run manually, make sure to run it as root
+
+export PATH=/usr/bin
+
+USER_NAME=$(who | awk -v vt=tty$(fgconsole) '$0 ~ vt {print $1}')
+USER_ID=$(id -u "$USER_NAME")
+CARD_PATH="/sys/class/drm/card0/"
+AUDIO_OUTPUT="analog-stereo"
+PULSE_SERVER="unix:/run/user/"$USER_ID"/pulse/native"
+
+for OUTPUT in $(cd "$CARD_PATH" && echo card*); do
+  OUT_STATUS=$(<"$CARD_PATH"/"$OUTPUT"/status)
+  if [[ $OUT_STATUS == connected ]]
+  then
+    echo $OUTPUT connected
+    case "$OUTPUT" in
+      "card0-HDMI-A-1")
+        AUDIO_OUTPUT="hdmi-stereo" # Digital Stereo (HDMI 1)
+     ;;
+      "card0-HDMI-A-2")
+        AUDIO_OUTPUT="hdmi-stereo-extra1" # Digital Stereo (HDMI 2)
+     ;;
+    esac
+  fi
+done
+echo selecting output $AUDIO_OUTPUT
+sudo -u "$USER_NAME" pactl --server "$PULSE_SERVER" set-card-profile 0 output:$AUDIO_OUTPUT+input:analog-stereo
+