Add auto headphone sink switcher

cec-remote/setup.sh

@@ -3,7 +3,7 @@
 SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 echo $SCRIPT_DIR
 
-cat | sudo tee /etc/systemd/system/cec-remote.service <<EOF
+sudo tee /etc/systemd/system/cec-remote.service <<EOF
 [Unit]
 Description=CEC Receiver Service
 After=network.target
@@ -19,3 +19,5 @@ Environment=PYTHONUNBUFFERED=1
 [Install]
 WantedBy=multi-user.target
 EOF
+
+echo "done"

g534-sink-switcher/auto-switch-to-headphones.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+
+# =================================================================
+# CONFIGURATION – EDIT THESE TWO LINES
+# =================================================================
+SINK_G435="alsa_output.usb-Logitech_G_series_G435_Wireless_Gaming_Headset_202105190004-00.analog-stereo"
+SINK_FALLBACK="alsa_output.pci-0000_03_00.1.hdmi-surround-extra3"
+
+# Rapid‑volume‑up detection
+RAPID_THRESHOLD=10      # number of VOLUMEUP events in the window
+RAPID_WINDOW=3          # seconds
+
+# =================================================================
+# Find the G435 Consumer Control input device automatically
+# =================================================================
+find_g435_event() {
+    for link in /dev/input/by-id/*G435*event*; do
+        if [ -e "$link" ]; then
+            readlink -f "$link"
+            return 0
+        fi
+    done
+    return 1
+}
+
+DEVICE=""
+while [ -z "$DEVICE" ]; do
+    DEVICE=$(find_g435_event)
+    if [ -z "$DEVICE" ]; then
+        echo "G435 input device not found – retrying in 2s..." >&2
+        sleep 2
+    fi
+done
+echo "Found G435 device: $DEVICE"
+
+# =================================================================
+# Switch function
+# =================================================================
+switch_to_sink() {
+    local target="$1"
+    pactl set-default-sink "$target"
+    for id in $(pactl list short sink-inputs | awk '{print $1}'); do
+        pactl move-sink-input "$id" "$target" 2>/dev/null
+    done
+    echo "Switched to: $target"
+}
+
+# =================================================================
+# Event loop – grab the device exclusively
+# =================================================================
+up_timestamps=()
+
+exec 3< <(stdbuf -oL evtest  "$DEVICE")
+
+while read -u 3 line; do
+    # Volume UP press (115)
+    if [[ "$line" == *"code 115 (KEY_VOLUMEUP)"*"value 1"* ]]; then
+        now=$(date +%s)
+        up_timestamps+=("$now")
+        # prune timestamps older than window
+        cutoff=$((now - RAPID_WINDOW))
+        new_ts=()
+        for ts in "${up_timestamps[@]}"; do
+            [ "$ts" -ge "$cutoff" ] && new_ts+=("$ts")
+        done
+        up_timestamps=("${new_ts[@]}")
+        count=${#up_timestamps[@]}
+
+        if [ "$count" -gt "$RAPID_THRESHOLD" ]; then
+            echo "Rapid VOLUMEUP ($count presses) – switching to FALLBACK"
+            switch_to_sink "$SINK_FALLBACK"
+        else
+            echo "Normal VOLUMEUP – switching to G435"
+            switch_to_sink "$SINK_G435"
+        fi
+
+    # Volume DOWN press (114) – always switch to G435
+    elif [[ "$line" == *"code 114 (KEY_VOLUMEDOWN)"*"value 1"* ]]; then
+        echo "VOLUMEDOWN – switching to G435"
+        switch_to_sink "$SINK_G435"
+    fi
+done

g534-sink-switcher/setup.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+echo $SCRIPT_DIR
+
+sudo tee /home/kuba/.config/systemd/user/g435-sink-switch.service <<EOF
+[Unit]
+Description=Switch audio sink to G435 when its volume rocker is pressed
+After=pipewire-pulse.service
+Wants=pipewire-pulse.service
+
+[Service]
+Type=simple
+ExecStart=$SCRIPT_DIR/auto-switch-to-headphones.sh
+Restart=always
+RestartSec=5
+Environment=XDG_RUNTIME_DIR=%t
+
+[Install]
+WantedBy=default.target
+EOF

g534-sink-switcher/setup.sh~

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+echo $SCRIPT_DIR
+
+cat | sudo tee /etc/systemd/system/cec-remote.service <<EOF
+[Unit]
+Description=CEC Receiver Service
+After=network.target
+
+[Service]
+ExecStart=/usr/bin/python3 $SCRIPT_DIR/cec_receiver.py
+WorkingDirectory=/home/kuba/cec-remote
+Restart=on-failure
+RestartSec=5
+User=kuba
+Environment=PYTHONUNBUFFERED=1
+
+[Install]
+WantedBy=multi-user.target
+EOF

setup.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
 set -e
+set -o xtrace
 
 ./cec-remote/setup.sh
+./g534-sink-switcher/setup.sh