updates

modules/capabilities/handy/push_to_talk.py

@@ -0,0 +1,48 @@
+"""Wait for release of the physical Super+D chord that launched this service."""
+
+import signal
+import subprocess
+import sys
+from contextlib import closing
+
+from evdev import InputDevice, ecodes as key, list_devices
+
+
+def held(keys):
+    return key.KEY_D in keys and bool({key.KEY_LEFTMETA, key.KEY_RIGHTMETA} & set(keys))
+
+
+def interrupted(signum, frame):
+    raise KeyboardInterrupt
+
+
+def main(handy):
+    signal.signal(signal.SIGTERM, interrupted)
+    for path in list_devices():
+        try:
+            device = InputDevice(path)
+        except OSError:
+            continue  # Devices can disappear between enumeration and opening.
+        with closing(device):
+            if not held(device.active_keys()):
+                continue
+            action = "--cancel"
+            try:
+                subprocess.run([handy, "--toggle-transcription"], check=True)
+                # A quick release may already be queued while the CLI starts.
+                if held(device.active_keys()):
+                    for event in device.read_loop():
+                        if not held(device.active_keys()):
+                            break
+                action = "--toggle-transcription"
+            finally:
+                # Disconnects, cancellation and service shutdown discard the recording.
+                subprocess.run([handy, action], check=True)
+            return
+
+
+if __name__ == "__main__":
+    try:
+        main(sys.argv[1])
+    except KeyboardInterrupt:
+        pass