Claude
f9e1eb82c4
app/ = /opt/callrec (Node-Backend, Vite-Frontend, Python-Inferenz, Audio-Skripte, rkllm_server.cpp), system/ = systemd-Units, WirePlumber/PipeWire-Drop-ins, sudoers. Modelle, Binaries, Aufnahmen und node_modules bleiben draussen (.gitignore). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
#!/usr/bin/env python3
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# Listen to the Logitech H390 inline volume/mute buttons (they arrive as HID
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# keyboard events on the BOARD, since the headset is plugged into the board) and
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# apply them to the headset PipeWire sink. Headless => no desktop consumes these,
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# so without this daemon the inline buttons do nothing.
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import glob, os, re, struct, subprocess, time
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RUNTIME = "/run/user/1000"
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USER = "callrec"
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HSSINK = "alsa_output.usb-Logi_USB_Headset_Logi_USB_Headset-00.analog-stereo"
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DEV_NAME_RE = re.compile(r"Logi USB Headset", re.I)
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# linux input_event (64-bit): struct timeval(2*long) + u16 type + u16 code + s32 value
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EV_FMT = "llHHi"
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EV_SIZE = struct.calcsize(EV_FMT)
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EV_KEY = 0x01
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KEY_MUTE, KEY_VOLUMEDOWN, KEY_VOLUMEUP = 113, 114, 115
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def pactl(*args):
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subprocess.run(["sudo", "-u", USER, "env", f"XDG_RUNTIME_DIR={RUNTIME}",
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"pactl", *args], check=False,
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stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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def find_event_device():
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# match the event handler of the input device whose Name contains "Logi USB
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# Headset" and that reports key events (EV=... has bit 1). Parse
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# /proc/bus/input/devices so we survive event-number changes across reboots.
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try:
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blocks = open("/proc/bus/input/devices").read().split("\n\n")
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except OSError:
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return None
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for b in blocks:
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if not DEV_NAME_RE.search(b):
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continue
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m = re.search(r"Handlers=.*?(event\d+)", b)
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if m:
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return "/dev/input/" + m.group(1)
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return None
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def run():
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dev = None
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while True:
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path = find_event_device()
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if not path or not os.path.exists(path):
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time.sleep(2); continue
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try:
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dev = open(path, "rb", buffering=0)
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except OSError:
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time.sleep(2); continue
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try:
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while True:
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data = dev.read(EV_SIZE)
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if not data or len(data) < EV_SIZE:
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break
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_, _, etype, code, value = struct.unpack(EV_FMT, data)
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if etype != EV_KEY or value == 0: # key release => ignore
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continue
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if code == KEY_VOLUMEUP:
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pactl("set-sink-volume", HSSINK, "+4%")
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elif code == KEY_VOLUMEDOWN:
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pactl("set-sink-volume", HSSINK, "-4%")
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elif code == KEY_MUTE and value == 1:
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pactl("set-sink-mute", HSSINK, "toggle")
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except OSError:
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pass
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finally:
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try: dev.close()
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except Exception: pass
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time.sleep(1) # device vanished (unplug/reboot) -> re-find
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if __name__ == "__main__":
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run()
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