From 51f5d81a244107165457cc644237a916d603af42 Mon Sep 17 00:00:00 2001
From: David Runge <dave@sleepmap.de>
Date: Wed, 25 Mar 2015 21:12:41 +0100
Subject: bin/set_volume: Rewritten to also increase/decrease volume of
 connected Bluetooth headset and toggle mute smartly.

---
 bin/set_volume | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 106 insertions(+), 14 deletions(-)

(limited to 'bin/set_volume')

diff --git a/bin/set_volume b/bin/set_volume
index 3168870..1652312 100755
--- a/bin/set_volume
+++ b/bin/set_volume
@@ -1,40 +1,125 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 FUNCTIONS=$HOME/bin/functions.sh
 [ -e $FUNCTIONS ] || exit 1
 . $FUNCTIONS
 
-LED=/sys/class/leds/0003:17EF:6009.0004:amber:mute/brightness
+state_muted="/tmp/$(whoami)/state_muted"
+state_muted_headphone=""
+state_muted_speaker=""
+state_bt_headphone=""
+name_bt_headphone="bluez_sink.00_1B_66_02_36_41"
+cardselector=""
+card_icon="/usr/share/icons/gnome/48x48/devices/audio-speakers.png" # gnome-icon-theme 
 
 function increase_volume()
 {
-  mute amixer sset Master 10%+
+  mute amixer $cardselector sset Master 5%+
+  local state_master=$(amixer $cardselector sget Master |grep "%" | cut -d'%' -f1 | cut -d '[' -f2 | uniq)
+  #update pactl bluetooth audio to same level if present
+  if [ $state_bt_headphone = "[on]" ];then
+    pactl set-sink-volume $name_bt_headphone "$state_master%"
+  fi
+  print_volumes $state_master
 }
 
 function decrease_volume()
 {
-  mute amixer sset Master 10%-
+  mute amixer $cardselector sset Master 5%-
+  local state_master=$(amixer $cardselector sget Master |grep "%" | cut -d'%' -f1 | cut -d '[' -f2 | uniq)
+  #update pactl bluetooth audio to same level if present
+  if [ $state_bt_headphone = "[on]" ];then
+    pactl set-sink-volume $name_bt_headphone "$state_master%"
+  fi
+  print_volumes $state_master
+}
+
+function print_volumes()
+{
+  local state_master=$1
+  local state_headphone=$(amixer $cardselector sget Headphone |grep "%" | cut -d'%' -f1 | cut -d '[' -f2 | uniq)
+  local state_speaker=$(amixer $cardselector sget Speaker |grep "%" | cut -d'%' -f1 | cut -d '[' -f2 | uniq)
+  if [ $state_bt_headphone = "[on]" ]; then
+    send_notify "Master: $state_master% \nHeadphone: $state_headphone% \nSpeaker: $state_speaker%\nBT Headphone: $state_master%"
+  else
+    send_notify "Master: $state_master% \nHeadphone: $state_headphone% \nSpeaker: $state_speaker%"
+  fi
 }
 
 function toggle_volume()
 {
-  state=$(amixer sget Master | grep -o '\[o[n|f]*\]' | head -n 1)
-  case "$state" in
+  local state_master=$(amixer $cardselector sget Master | grep -o '\[o[n|f]*\]' | head -n 1)
+  local state_headphone=$(amixer $cardselector sget Headphone | grep -o '\[o[n|f]*\]' | head -n 1)
+  local state_speaker=$(amixer $cardselector sget Speaker | grep -o '\[o[n|f]*\]' | head -n 1)
+  case "$state_master" in
     "[on]")
-      mute amixer sset Master mute
-      mute amixer sset Headphone mute
-      mute amixer sset Speaker mute
-      echo 1 > $LED
+      mute amixer $cardselector sset Master mute
+      state_master="[off]"
+      # if headphones are off already, don't mute, instead save state to tmp file
+      if [ "$state_headphone" = "[off]" ];then
+        echo "headphone [off]" >> "$state_muted"
+      else
+        mute amixer $cardselector sset Headphone mute
+        state_headphone="[off]"
+      fi
+      # if speakers are off already, don't mute, instead save state to tmp file
+      if [ "$state_speaker" = "[off]" ];then
+        echo "speaker [off]" >> "$state_muted"
+      else
+        mute amixer $cardselector sset Speaker mute
+        state_speaker="[off]"
+      fi
+      # if present, also mute bluetooth headphone
+      if [ $state_bt_headphone = "[on]" ]; then
+        pactl set-sink-mute $name_bt_headphone 1
+      fi
     ;;
     "[off]")
-      mute amixer sset Master unmute
-      mute amixer sset Headphone unmute
-      mute amixer sset Speaker unmute
-      echo 0 > $LED
+      mute amixer $cardselector sset Master unmute
+      state_master="[on]"
+      # if headphones are meant to be off, don't unmute them again
+      if [ "$state_muted_headphone" != "[off]" ];then
+        mute amixer $cardselector sset Headphone unmute
+        state_headphone="[on]"
+      fi
+      # if headphones are meant to be off, don't unmute them again
+      if [ "$state_muted_speaker" != "[off]" ];then
+        mute amixer $cardselector sset Speaker unmute
+        state_speaker="[on]"
+      fi
+      # if present, also unmute bluetooth headphone
+      if [ $state_bt_headphone = "[on]" ]; then
+        pactl set-sink-mute $name_bt_headphone 0
+      fi
     ;;
   esac
+  if [ $state_bt_headphone = "[on]" ]; then
+    send_notify "Master: $state_master \nHeadphone: $state_headphone \nSpeaker: $state_speaker\nBT Headphone: $state_master" 2000
+  else
+    send_notify "Master: $state_master \nHeadphone: $state_headphone \nSpeaker: $state_speaker" 2000
+  fi
 }
 
+function send_notify()
+{
+  # allow timeout to be set by 2nd argument
+  local timeout=500
+  if [ $2 -gt 0 ]; then
+    timeout=$2
+  fi
+  notify-send -t $timeout \
+    -i /usr/share/icons/gnome/48x48/devices/audio-speakers.png \
+    "Volume" "$1"
+}
+
+if [ $HOSTNAME = "dvzrv" ];then
+  cardselector=" -M -c 1 "
+  if [ -n "$(pactl list sinks short | grep $name_bt_headphone)" ]; then
+    state_bt_headphone="[on]"
+  fi
+  #TODO: also check pactl for JACK sink
+fi
+
 case "$1" in
   increase)
     increase_volume
@@ -43,6 +128,13 @@ case "$1" in
     decrease_volume
     ;;
   toggle)
+    if [ -f "$state_muted" ]; then
+      state_muted_headphone=$(cat "$state_muted" | grep headphone | cut -d' ' -f2)
+      state_muted_speaker=$(cat "$state_muted" | grep speaker | cut -d' ' -f2)
+      rm "$state_muted"
+    else
+      touch "$state_muted"
+    fi
     toggle_volume
     ;;
   *)
-- 
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