Add MPG341CX input switcher

This commit is contained in:
2026-04-26 17:39:31 -07:00
parent 31fbcf73ac
commit cde795dcae
4 changed files with 276 additions and 94 deletions

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@@ -525,7 +525,7 @@ bind = $hyper, R, exec, rofi-systemd
bind = $hyper, slash, exec, toggle_taffybar bind = $hyper, slash, exec, toggle_taffybar
bind = $hyper, 9, exec, start_synergy.sh bind = $hyper, 9, exec, start_synergy.sh
bind = $hyper, I, exec, rofi_select_input.hs bind = $hyper, I, exec, rofi_select_input.hs
bind = $hyper, backslash, exec, /home/imalison/dotfiles/dotfiles/lib/functions/monitor_input toggle bind = $hyper, backslash, exec, /home/imalison/dotfiles/dotfiles/lib/functions/mpg341cx_input toggle
bind = $hyper, O, exec, rofi_paswitch bind = $hyper, O, exec, rofi_paswitch
bind = $hyper, W, exec, rofi_wallpaper.sh bind = $hyper, W, exec, rofi_wallpaper.sh
bind = $hyper, Y, exec, rofi_agentic_skill bind = $hyper, Y, exec, rofi_agentic_skill

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@@ -1,93 +0,0 @@
#!/usr/bin/env zsh
function monitor_input_usage {
cat <<'EOF'
Usage:
monitor_input [toggle|dp|usb-c|hdmi1|hdmi2]
Switches the current DDC/CI monitor input. On the MSI MPG341CX OLED:
dp -> DisplayPort
usb-c -> USB-C / Type-C
toggle -> DisplayPort <-> USB-C
Environment:
MONITOR_INPUT_DDC_DISPLAY ddcutil display number, default: 1
EOF
}
function monitor_input_notify {
local message="$1"
if command -v notify-send >/dev/null 2>&1; then
notify-send "Monitor input" "$message"
fi
}
function monitor_input_current {
local display="$1"
ddcutil --display "$display" getvcp 60 --terse 2>/dev/null \
| grep -Eo 'x[0-9a-fA-F]+' \
| tail -1
}
function monitor_input {
local target="${1:-toggle}"
local display="${MONITOR_INPUT_DDC_DISPLAY:-1}"
local value label current
if [[ "$target" == "-h" || "$target" == "--help" ]]; then
monitor_input_usage
return 0
fi
if ! command -v ddcutil >/dev/null 2>&1; then
echo "monitor_input: ddcutil is not available on PATH" >&2
monitor_input_notify "ddcutil is not available"
return 1
fi
case "${target:l}" in
toggle)
current="$(monitor_input_current "$display")"
case "${current:l}" in
x0f)
target="dp"
;;
x10)
target="usb-c"
;;
*)
echo "monitor_input: current input is '${current:-unknown}', defaulting to DisplayPort" >&2
target="dp"
;;
esac
;;
esac
case "${target:l}" in
dp|displayport|display-port)
value="0x10"
label="DisplayPort"
;;
usb-c|usbc|type-c|typec)
value="0x0f"
label="USB-C"
;;
hdmi1|hdmi-1)
value="0x11"
label="HDMI 1"
;;
hdmi2|hdmi-2)
value="0x12"
label="HDMI 2"
;;
*)
monitor_input_usage >&2
return 2
;;
esac
monitor_input_notify "Switching to $label"
ddcutil --display "$display" --noverify setvcp 60 "$value"
}
monitor_input "$@"

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@@ -0,0 +1,271 @@
#!/usr/bin/env -S zsh -f
function mpg341cx_input_usage {
cat <<'EOF'
Usage:
mpg341cx_input [toggle|dp|usb-c|hdmi1|hdmi2]
Switches the current DDC/CI monitor input. On the MSI MPG341CX OLED:
dp -> DisplayPort
usb-c -> USB-C / Type-C
toggle -> DisplayPort <-> USB-C
Environment:
MPG341CX_INPUT_DDC_DISPLAY DDC display number, default: 1
MPG341CX_INPUT_BACKEND auto, ddcutil, ddcctl, or m1ddc; default: auto
MPG341CX_INPUT_STATE_FILE fallback toggle state file
EOF
}
function mpg341cx_input_notify {
local message="$1"
if command -v notify-send >/dev/null 2>&1; then
notify-send "MPG341CX input" "$message"
elif command -v osascript >/dev/null 2>&1; then
osascript - "$message" <<'EOF' >/dev/null 2>&1
on run argv
display notification (item 1 of argv) with title "MPG341CX input"
end run
EOF
fi
}
function mpg341cx_input_backend {
local requested="${MPG341CX_INPUT_BACKEND:-auto}"
local candidate
local -a candidates
MPG341CX_INPUT_SELECTED_BACKEND=""
if [[ "$requested" != auto ]]; then
if command -v "$requested" >/dev/null 2>&1; then
MPG341CX_INPUT_SELECTED_BACKEND="$requested"
return 0
fi
echo "mpg341cx_input: requested backend '$requested' is not available on PATH" >&2
return 1
fi
if [[ "$OSTYPE" == darwin* ]]; then
candidates=(m1ddc ddcctl ddcutil)
else
candidates=(ddcutil ddcctl)
fi
for candidate in "${candidates[@]}"; do
if command -v "$candidate" >/dev/null 2>&1; then
MPG341CX_INPUT_SELECTED_BACKEND="$candidate"
return 0
fi
done
echo "mpg341cx_input: no supported DDC command is available on PATH" >&2
return 1
}
function mpg341cx_input_current_ddcutil {
local display="$1"
local output_file
output_file="${TMPDIR:-/tmp}/mpg341cx-input-current-$$-$RANDOM"
ddcutil --display "$display" getvcp 60 --terse 2>/dev/null \
| grep -Eo 'x[0-9a-fA-F]+' \
| tail -1 > "$output_file"
read -r MPG341CX_INPUT_CURRENT < "$output_file"
rm -f "$output_file"
}
function mpg341cx_input_current_ddcctl {
local display="$1"
local current
local output_file
output_file="${TMPDIR:-/tmp}/mpg341cx-input-current-$$-$RANDOM"
ddcctl -d "$display" -i '?' 2>/dev/null \
| sed -nE 's/.*current: ([0-9]+).*/\1/p' \
| tail -1 > "$output_file"
read -r current < "$output_file"
rm -f "$output_file"
if [[ -n "$current" ]]; then
printf -v MPG341CX_INPUT_CURRENT 'x%02x' "$current"
fi
}
function mpg341cx_input_current_m1ddc {
local display="$1"
local current
local output_file parsed_file
output_file="${TMPDIR:-/tmp}/mpg341cx-input-current-$$-$RANDOM"
parsed_file="${TMPDIR:-/tmp}/mpg341cx-input-parsed-$$-$RANDOM"
m1ddc display "$display" get input > "$output_file" 2>/dev/null
sed -nE 's/.*[^0-9]([0-9]+)$/\1/p; /^[0-9]+$/p' "$output_file" | tail -1 > "$parsed_file"
read -r current < "$parsed_file"
rm -f "$output_file" "$parsed_file"
if [[ -n "$current" ]]; then
printf -v MPG341CX_INPUT_CURRENT 'x%02x' "$current"
fi
}
function mpg341cx_input_current {
local backend="$1"
local display="$2"
MPG341CX_INPUT_CURRENT=""
case "$backend" in
ddcutil)
mpg341cx_input_current_ddcutil "$display"
;;
ddcctl)
mpg341cx_input_current_ddcctl "$display"
;;
m1ddc)
mpg341cx_input_current_m1ddc "$display"
;;
esac
}
function mpg341cx_input_current_target {
local backend="$1"
local current="${2:l}"
MPG341CX_INPUT_CURRENT_TARGET=""
case "$backend:$current" in
m1ddc:x0f|m1ddc:0x0f)
MPG341CX_INPUT_CURRENT_TARGET="dp"
;;
m1ddc:x10|m1ddc:0x10)
MPG341CX_INPUT_CURRENT_TARGET="usb-c"
;;
ddcutil:x0f|ddcutil:0x0f|ddcctl:x0f|ddcctl:0x0f)
MPG341CX_INPUT_CURRENT_TARGET="usb-c"
;;
ddcutil:x10|ddcutil:0x10|ddcctl:x10|ddcctl:0x10)
MPG341CX_INPUT_CURRENT_TARGET="dp"
;;
esac
}
function mpg341cx_input_state_file {
MPG341CX_INPUT_SELECTED_STATE_FILE="${MPG341CX_INPUT_STATE_FILE:-${XDG_STATE_HOME:-$HOME/.local/state}/mpg341cx_input/input}"
}
function mpg341cx_input_current_state {
local state_file
mpg341cx_input_state_file
state_file="$MPG341CX_INPUT_SELECTED_STATE_FILE"
if [[ -r "$state_file" ]]; then
read -r MPG341CX_INPUT_CURRENT_TARGET < "$state_file"
fi
}
function mpg341cx_input_write_state {
local current="$1"
local state_file state_dir
mpg341cx_input_state_file
state_file="$MPG341CX_INPUT_SELECTED_STATE_FILE"
state_dir="${state_file:h}"
mkdir -p "$state_dir" >/dev/null 2>&1 || return 0
print -r -- "$current" > "$state_file" 2>/dev/null || true
}
function mpg341cx_input {
local target="${1:-toggle}"
local display="${MPG341CX_INPUT_DDC_DISPLAY:-1}"
local backend value_hex value_dec value_m1ddc label current current_target
if [[ "$target" == "-h" || "$target" == "--help" ]]; then
mpg341cx_input_usage
return 0
fi
if ! mpg341cx_input_backend; then
mpg341cx_input_notify "No DDC command is available"
return 1
fi
backend="$MPG341CX_INPUT_SELECTED_BACKEND"
case "${target:l}" in
toggle)
mpg341cx_input_current "$backend" "$display"
current="$MPG341CX_INPUT_CURRENT"
mpg341cx_input_current_target "$backend" "$current"
current_target="$MPG341CX_INPUT_CURRENT_TARGET"
if [[ -z "$current_target" ]]; then
mpg341cx_input_current_state
current_target="$MPG341CX_INPUT_CURRENT_TARGET"
fi
case "${current_target:l}" in
dp)
target="usb-c"
;;
usb-c)
target="dp"
;;
*)
echo "mpg341cx_input: current input is '${current:-unknown}', defaulting to DisplayPort" >&2
target="dp"
;;
esac
;;
esac
case "${target:l}" in
dp|displayport|display-port)
value_hex="0x10"
value_dec="16"
value_m1ddc="15"
label="DisplayPort"
target="dp"
;;
usb-c|usbc|type-c|typec)
value_hex="0x0f"
value_dec="15"
value_m1ddc="16"
label="USB-C"
target="usb-c"
;;
hdmi1|hdmi-1)
value_hex="0x11"
value_dec="17"
value_m1ddc="17"
label="HDMI 1"
target="hdmi1"
;;
hdmi2|hdmi-2)
value_hex="0x12"
value_dec="18"
value_m1ddc="18"
label="HDMI 2"
target="hdmi2"
;;
*)
mpg341cx_input_usage >&2
return 2
;;
esac
mpg341cx_input_notify "Switching to $label"
case "$backend" in
ddcutil)
ddcutil --display "$display" --noverify setvcp 60 "$value_hex" || return $?
;;
ddcctl)
ddcctl -d "$display" -i "$value_dec" || return $?
;;
m1ddc)
m1ddc display "$display" set input "$value_m1ddc" || return $?
;;
esac
mpg341cx_input_write_state "$target"
}
mpg341cx_input "$@"

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@@ -254,6 +254,10 @@
homebrew = { homebrew = {
enable = true; enable = true;
taps = builtins.attrNames config.nix-homebrew.taps; taps = builtins.attrNames config.nix-homebrew.taps;
brews = [
"ddcctl"
"m1ddc"
];
casks = [ casks = [
"codex-app" "codex-app"
"ghostty" "ghostty"