File 0009-do-not-zero-volume.patch of Package pulseaudio-equalizer

--- a/usr/bin/pulseaudio-equalizer
+++ b/usr/bin/pulseaudio-equalizer
@@ -115,8 +115,14 @@ fi
 # Get sink names and volumes
 PA_LADSPA_SINK="ladspa_output.$PA_LADSPA_PLUGIN.$PA_LADSPA_LABEL"
 PA_CURRENT_SINK=$(pacmd stat | sed -e '/Default sink name/!d;s/Default sink name: //g')
-PA_CURRENT_VOLUME=$(pacmd list | iconv -c -t ascii | grep -A20 "<$PA_CURRENT_SINK>" | grep -m1 'volume: 0:' | awk '{print $NF}' | sed 's/%//g')
-PA_REAL_VOLUME=$((PA_CURRENT_VOLUME*65536/100))
+if [ "$( (echo '4.0'; pulseaudio --version | awk '{print $2}') | sort -V | sed -n '2p' )" != '4.0' ]; then
+    # The version of PulseAudio is higher than 4.0.
+    PA_CURRENT_VOLUME=$(pacmd list | iconv -c -t ascii | grep -A20 "<$PA_CURRENT_SINK>" | grep -m1 'volume: front-left:' | awk '{print $3}')
+    PA_REAL_VOLUME="$PA_CURRENT_VOLUME"
+else
+    PA_CURRENT_VOLUME=$(pacmd list | iconv -c -t ascii | grep -A20 "<$PA_CURRENT_SINK>" | grep -m1 'volume: 0:' | awk '{print $NF}' | sed 's/%//g')
+    PA_REAL_VOLUME=$((PA_CURRENT_VOLUME*65536/100))
+fi
 PA_REAL_PREAMP_FLOAT=$(echo "$PA_PREAMP*65536" | bc)
 PA_REAL_PREAMP=${PA_REAL_PREAMP_FLOAT/\.*}
 PA_CURRENT_MUTE=$(pacmd list-sinks | iconv -c -t ascii | grep -A20 "<$PA_CURRENT_SINK>" | grep -m1 'muted: ' | sed -e 's/[\t]muted: no/0/g;s/[\t]muted: yes/1/g')