Switch PTT to evdev for reliable key state (no repeat spam)
pynput on X11 sees key repeats as real press/release pairs, causing rapid-fire toggling. evdev gives event.value=2 for repeats which we simply ignore. Only real press (1) and release (0) are handled. Requires sudo or 'input' group membership. https://claude.ai/code/session_01XKYC1basxdwtHy71tky7xm
This commit is contained in:
Claude
+71
-75
@@ -2,52 +2,39 @@
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"""
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openwhispr-ptt.py — Push-to-talk wrapper for OpenWhispr
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Turns Ctrl+Alt (hold) into Ctrl+` toggle pairs:
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- Press Ctrl+Alt → sends Ctrl+` to START dictation
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- Release Ctrl+Alt → sends Ctrl+` to STOP dictation
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Turns Ctrl+Alt (hold) into Ctrl+` toggle pairs using raw evdev input.
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No key repeat issues — reads physical key state directly.
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Requires: pynput, xdotool
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Usage: python3 openwhispr-ptt.py
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Requires: evdev, xdotool
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May need to run as root or add user to 'input' group.
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Usage: sudo python3 openwhispr-ptt.py
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"""
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import subprocess
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import threading
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import time
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import signal
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import sys
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try:
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from pynput import keyboard
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import evdev
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from evdev import ecodes
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except ImportError:
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print("Error: pynput not installed.")
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print("Install with: pip3 install pynput")
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print("Error: evdev not installed.")
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print("Install with: pip3 install evdev --break-system-packages")
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sys.exit(1)
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# ── Configuration ────────────────────────────────────────────────────────────
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# The key combo YOU hold to talk
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PTT_MODIFIER = keyboard.Key.ctrl_l
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PTT_KEY = keyboard.Key.alt_l
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# Also accept right-hand variants
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PTT_MODIFIER_ALT = keyboard.Key.ctrl_r
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PTT_KEY_ALT = keyboard.Key.alt_r
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# The key combo OpenWhispr uses (Ctrl+`)
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# We simulate this via xdotool for reliability with Electron apps
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WHISPR_HOTKEY = "ctrl+grave"
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# ── State ────────────────────────────────────────────────────────────────────
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KEY_LEFTCTRL = ecodes.KEY_LEFTCTRL
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KEY_RIGHTCTRL = ecodes.KEY_RIGHTCTRL
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KEY_LEFTALT = ecodes.KEY_LEFTALT
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KEY_RIGHTALT = ecodes.KEY_RIGHTALT
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is_recording = False
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press_time = 0
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ctrl_held = False
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super_held = False
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lock = threading.Lock()
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alt_held = False
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is_recording = False
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def send_whispr_toggle():
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"""Send Ctrl+` to OpenWhispr via xdotool."""
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try:
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subprocess.run(
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["xdotool", "key", WHISPR_HOTKEY],
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@@ -55,66 +42,75 @@ def send_whispr_toggle():
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capture_output=True,
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)
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except FileNotFoundError:
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print("Error: xdotool not installed. Install with: sudo apt install xdotool")
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print("Error: xdotool not installed.")
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sys.exit(1)
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except subprocess.TimeoutExpired:
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pass
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def on_press(key):
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global is_recording, press_time, ctrl_held, super_held
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with lock:
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# Track modifier state — ignore key repeat (already True)
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if key in (PTT_MODIFIER, PTT_MODIFIER_ALT):
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ctrl_held = True
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elif key in (PTT_KEY, PTT_KEY_ALT):
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super_held = True
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# Start recording when both held and not already recording
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if ctrl_held and super_held and not is_recording:
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press_time = time.time()
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is_recording = True
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send_whispr_toggle() # START
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print("\033[32m● Recording...\033[0m", flush=True)
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def on_release(key):
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global is_recording, press_time, ctrl_held, super_held
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with lock:
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released_ptt = False
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if key in (PTT_MODIFIER, PTT_MODIFIER_ALT):
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ctrl_held = False
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released_ptt = True
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elif key in (PTT_KEY, PTT_KEY_ALT):
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super_held = False
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released_ptt = True
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# Stop recording when either key is truly released
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if is_recording and released_ptt:
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elapsed_ms = (time.time() - press_time) * 1000
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send_whispr_toggle() # STOP
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is_recording = False
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print(f"\033[0m○ Stopped ({int(elapsed_ms)}ms)", flush=True)
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def find_keyboard():
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"""Find the keyboard device."""
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devices = [evdev.InputDevice(path) for path in evdev.list_devices()]
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for dev in devices:
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caps = dev.capabilities(verbose=False)
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if ecodes.EV_KEY in caps:
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keys = caps[ecodes.EV_KEY]
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if ecodes.KEY_A in keys and ecodes.KEY_LEFTCTRL in keys:
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return dev
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return None
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def main():
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print("═══════════════════════════════════════════")
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print(" OpenWhispr Push-to-Talk")
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print("═══════════════════════════════════════════")
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print(" Hold: Ctrl + Alt → start dictation")
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print(" Release: Ctrl + Alt → stop dictation")
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global ctrl_held, alt_held, is_recording
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print("=" * 43)
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print(" OpenWhispr Push-to-Talk (evdev)")
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print("=" * 43)
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print(" Hold: Ctrl + Alt -> start dictation")
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print(" Release: Ctrl + Alt -> stop dictation")
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print(" Quit: Ctrl + C")
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print("═══════════════════════════════════════════")
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print("=" * 43)
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kb = find_keyboard()
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if kb is None:
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print("")
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print("Error: No keyboard found.")
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print("Try: sudo python3 ~/openwhispr-ptt.py")
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print("Or: sudo usermod -aG input $USER (then log out/in)")
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sys.exit(1)
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print(" Keyboard: " + kb.name)
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print("=" * 43)
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print("Listening...\n")
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# Handle Ctrl+C gracefully
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signal.signal(signal.SIGINT, lambda *_: sys.exit(0))
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with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
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listener.join()
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for event in kb.read_loop():
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if event.type != ecodes.EV_KEY:
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continue
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# value: 0=release, 1=press, 2=repeat — IGNORE repeats
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if event.value == 2:
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continue
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pressed = (event.value == 1)
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if event.code in (KEY_LEFTCTRL, KEY_RIGHTCTRL):
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ctrl_held = pressed
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elif event.code in (KEY_LEFTALT, KEY_RIGHTALT):
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alt_held = pressed
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# Start on both pressed
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if ctrl_held and alt_held and not is_recording:
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is_recording = True
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send_whispr_toggle()
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print("\033[32m● Recording...\033[0m", flush=True)
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# Stop when either released
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if is_recording and not (ctrl_held and alt_held):
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send_whispr_toggle()
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is_recording = False
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print("\033[0m○ Stopped", flush=True)
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if __name__ == "__main__":
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