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Fix Mac camera activation after bridge reconnects #74

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Merged
themartiano merged 1 commit into from
Sep 1, 2026
Merged

Fix Mac camera activation after bridge reconnects #74

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2 changes: 1 addition & 1 deletion guest/native-overlay/usr/local/bin/omarchy-native-camera-bridge
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,7 @@ V4L2LOOPBACK_EVENT_OFFSET = 0x08E00000
V4L2_EVENT_PRI_CLIENT_USAGE = (
V4L2_EVENT_PRIVATE_START + V4L2LOOPBACK_EVENT_OFFSET + 1
)
V4L2_EVENT_SUB_FL_SEND_INITIAL = 0x0002
V4L2_EVENT_SUB_FL_SEND_INITIAL = 0x0001


def log(message: str) -> None:
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19 changes: 19 additions & 0 deletions guest/tests/test_native_camera_bridge.py
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
from pathlib import Path
import struct
import unittest
from unittest import mock


GUEST = Path(__file__).resolve().parents[1]
Expand Down Expand Up @@ -68,6 +69,24 @@ def test_v4l2_ioctl_layout_matches_linux_uapi(self) -> None:
self.assertEqual(bridge.VIDIOC_S_FMT, 0xC0D05605)
self.assertEqual(bridge.VIDIOC_DQEVENT, 0x80885659)
self.assertEqual(bridge.VIDIOC_SUBSCRIBE_EVENT, 0x4020565A)
self.assertEqual(bridge.V4L2_EVENT_SUB_FL_SEND_INITIAL, 0x0001)

def test_camera_subscription_requests_initial_client_usage(self) -> None:
with (
mock.patch.object(bridge.fcntl, "ioctl") as ioctl,
mock.patch.object(bridge, "write_frame"),
):
bridge.configure_camera(42)

self.assertEqual(ioctl.call_count, 2)
subscription_call = ioctl.call_args_list[1]
self.assertEqual(subscription_call.args[1], bridge.VIDIOC_SUBSCRIBE_EVENT)
subscription = subscription_call.args[2]
self.assertEqual(subscription.type, bridge.V4L2_EVENT_PRI_CLIENT_USAGE)
self.assertEqual(
subscription.flags,
bridge.V4L2_EVENT_SUB_FL_SEND_INITIAL,
)

def test_wire_header_is_little_endian_and_fixed_size(self) -> None:
self.assertEqual(bridge.HEADER.size, 16)
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