old sam cleanup

vr180_matting/sam2_wrapper.py

@@ -256,13 +256,34 @@ class SAM2VideoMatting:
         """Clean up resources"""
         if self.inference_state is not None:
             try:
-                if hasattr(self.predictor, 'cleanup_state'):
+                # Reset SAM2 state first (critical for memory cleanup)
+                if hasattr(self.predictor, 'reset_state'):
+                    self.predictor.reset_state(self.inference_state)
+                
+                # Fallback to cleanup_state if available
+                elif hasattr(self.predictor, 'cleanup_state'):
                     self.predictor.cleanup_state(self.inference_state)
+                
+                # Explicitly delete inference state and video segments
+                del self.inference_state
+                if hasattr(self, 'video_segments') and self.video_segments:
+                    del self.video_segments
+                    self.video_segments = {}
+                
             except Exception as e:
                 warnings.warn(f"Failed to cleanup SAM2 state: {e}")
-            
+            finally:
                 self.inference_state = None
         
+        # Explicitly delete predictor
+        if self.predictor is not None:
+            try:
+                del self.predictor
+            except Exception as e:
+                warnings.warn(f"Failed to delete predictor: {e}")
+            finally:
+                self.predictor = None
+        
         # Clean up temporary video file
         if self.temp_video_path is not None:
             try:
@@ -277,6 +298,10 @@ class SAM2VideoMatting:
         if torch.cuda.is_available():
             torch.cuda.empty_cache()
         
+        # Force garbage collection (critical for memory leak prevention)
+        import gc
+        gc.collect()
+    
     def __del__(self):
         """Destructor to ensure cleanup"""
         self.cleanup()