Multi-scene webcam (schema v3/v4): singleton Webcam + per-scene WebcamSceneConfig, right-click OBS-style border/context menu, persisted round-to-rect restore + legacy-square 16:9 heal, dark MenuItem template, tests (25 passing)

2026-08-07 08:24:18 -07:00
parent f31ce9fdb7
commit e037ba027b
23 changed files with 1405 additions and 287 deletions
@@ -122,6 +122,28 @@ public sealed class CameraManager : IDisposable
        toStop.PreviewBitmap = null;
    }

+    /// <summary>
+    /// Releases a device unconditionally (every ref), regardless of how many scenes
+    /// hold it. Used on identity changes (webcam swap, layout reload) where the old
+    /// device's refcount isn't known after the scenes are replaced.
+    /// </summary>
+    public async Task ReleaseAllAsync(string deviceId)
+    {
+        CameraSession? toStop = null;
+        lock (_gate)
+        {
+            if (!_sessions.TryGetValue(deviceId, out var session)) return;
+            session.RefCount = 0;
+            _sessions.Remove(deviceId);
+            toStop = session;
+        }
+
+        if (toStop == null) return;
+        toStop.Source.FrameAvailable -= toStop.FrameHandler;
+        await SafeStopAsync(toStop.Source);
+        toStop.PreviewBitmap = null;
+    }
+
    public VideoFrame? GetLatestFrame(string deviceId)
    {
        lock (_gate)