LeapServiceProvider will no longer call InterpolateFrame or GetInterp…

Packages/Tracking/CHANGELOG.md

@@ -19,6 +19,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Updated Copyright year to 2025
 - Split tracking preview examples into different groups - common assets, main examples and examples that need the old input manager to work (e.g. UI input)
 - (Service Provider) Expose service IP and port as user settable variables
+- Functions for InterpolateFrame / InterpolateFrameFromTime / GetInterpolatedFrameSize will no longer call LeapC unless a valid device is passed/set
+- LeapServiceProvider Update will no longer request an interpolated frame without a valid device being set
+- LeapServiceProvider FixedUpdate will no longer request an interpolated frame without a valid device and connection, bringing it into line with Update
 
 ### Fixed
 - Fixed some warnings around runtime variables that were only used in editor mode

Packages/Tracking/Core/Runtime/Plugins/LeapCSharp/Connection.cs

@@ -140,6 +140,9 @@ public event EventHandler<ConnectionEventArgs> LeapConnection
 
         private bool _disposed = false;
 
+        private bool _loggedNullDeviceWarningForGetInterpolatedFrame = false;
+        private bool _loggedNullDeviceWarningForGetInterpolatedFrameSize = false;
+
         public void Dispose()
         {
             Dispose(true);
@@ -428,7 +431,6 @@ private void handleTrackingMessage(ref LEAP_TRACKING_EVENT trackingMsg, UInt32 d
             }
         }
 
-
         public UInt64 GetInterpolatedFrameSize(Int64 time, Device device = null)
         {
             UInt64 size = 0;
@@ -440,15 +442,18 @@ public UInt64 GetInterpolatedFrameSize(Int64 time, Device device = null)
             }
             else
             {
-                result = LeapC.GetFrameSize(_leapConnection, time, out size);
+                if (!_loggedNullDeviceWarningForGetInterpolatedFrameSize)
+                {
+                    UnityEngine.Debug.LogWarning($"Device is null, requesting the frame size without a valid device (handle) is no longer supported and should be considered obsolete");
+                    _loggedNullDeviceWarningForGetInterpolatedFrameSize = true;
+                }
+                result = eLeapRS.eLeapRS_Unsupported;
             }
 
             reportAbnormalResults("LeapC get interpolated frame call was ", result);
             return size;
         }
 
-
-
         public void GetInterpolatedFrame(Frame toFill, Int64 time, Device device = null)
         {
             UInt64 size = GetInterpolatedFrameSize(time, device);
@@ -461,7 +466,12 @@ public void GetInterpolatedFrame(Frame toFill, Int64 time, Device device = null)
             }
             else
             {
-                result = LeapC.InterpolateFrame(_leapConnection, time, trackingBuffer, size);
+                if (!_loggedNullDeviceWarningForGetInterpolatedFrame)
+                {
+                    UnityEngine.Debug.LogWarning($"Device is null, requesting an interpolated frame without a valid device (handle) is no longer supported and should be considered obsolete");
+                    _loggedNullDeviceWarningForGetInterpolatedFrame= true;
+                }
+                result = eLeapRS.eLeapRS_Unsupported;
             }
 
             reportAbnormalResults("LeapC get interpolated frame call was ", result);
@@ -482,12 +492,17 @@ public void GetInterpolatedFrameFromTime(Frame toFill, Int64 time, Int64 sourceT
 
             if (device != null)
             {
-
                 result = LeapC.InterpolateFrameFromTimeEx(_leapConnection, device.Handle, time, sourceTime, trackingBuffer, size);
             }
             else
             {
-                result = LeapC.InterpolateFrameFromTime(_leapConnection, time, sourceTime, trackingBuffer, size);
+                if (!_loggedNullDeviceWarningForGetInterpolatedFrame)
+                {
+                    UnityEngine.Debug.LogWarning($"Device is null, requesting an interpolated frame (from time) without a valid device (handle) is no longer supported and should be considered obsolete");
+                    _loggedNullDeviceWarningForGetInterpolatedFrame = true; 
+                }
+
+                result = eLeapRS.eLeapRS_Unsupported;
             }
 
             reportAbnormalResults("LeapC get interpolated frame from time call was ", result);

Packages/Tracking/Core/Runtime/Scripts/LeapServiceProvider.cs

@@ -669,6 +669,8 @@ protected virtual void Update()
 
         protected virtual void FixedUpdate()
         {
+            if (!checkConnectionIntegrity()) { return; }
+
             if (_useInterpolation)
             {
                 long timestamp;
@@ -691,7 +693,10 @@ protected virtual void FixedUpdate()
                           "Unexpected frame optimization mode: " + _frameOptimization);
                 }
 
-                _leapController.GetInterpolatedFrame(_untransformedFixedFrame, timestamp, _currentDevice);
+                if (_currentDevice != null)
+                {
+                    _leapController.GetInterpolatedFrame(_untransformedFixedFrame, timestamp, _currentDevice);
+                }
             }
             else
             {
@@ -767,7 +772,7 @@ void HandleUpdateFrameInterpolationAndTransformation()
                 return;
             }
 
-            if (_useInterpolation)
+            if (_useInterpolation && _currentDevice != null)
             {
 #if !UNITY_ANDROID || UNITY_EDITOR
                 _smoothedTrackingLatency.value = Mathf.Min(_smoothedTrackingLatency.value, 30000f);