diff --git a/LEGO1/mxstreamcontroller.cpp b/LEGO1/mxstreamcontroller.cpp
index a149bb92..d8484a22 100644
--- a/LEGO1/mxstreamcontroller.cpp
+++ b/LEGO1/mxstreamcontroller.cpp
@@ -1,8 +1,32 @@
 #include "mxstreamcontroller.h"
 
+#include "mxautolocker.h"
+
+// OFFSET: LEGO1 0x100c0b90 STUB
+MxStreamController::MxStreamController()
+{
+  // TODO
+}
+
+// OFFSET: LEGO1 0x100c1290 STUB
+MxStreamController::~MxStreamController()
+{
+  // TODO
+}
+
 // OFFSET: LEGO1 0x100c20d0 STUB
-MxBool MxStreamController::IsStillInUse()
+MxBool MxStreamController::CanBeDeleted()
 {
   // TODO
   return TRUE;
 }
+
+// OFFSET: LEGO1 0x100c1520
+MxResult MxStreamController::Open(const char *p_filename)
+{
+  MxAutoLocker locker(&m_criticalSection);
+
+  // TODO
+
+  return SUCCESS;
+}
diff --git a/LEGO1/mxstreamcontroller.h b/LEGO1/mxstreamcontroller.h
index 8c360166..14fc7abd 100644
--- a/LEGO1/mxstreamcontroller.h
+++ b/LEGO1/mxstreamcontroller.h
@@ -1,14 +1,20 @@
 #ifndef MXSTREAMCONTROLLER_H
 #define MXSTREAMCONTROLLER_H
 
+#include "decomp.h"
 #include "mxatomid.h"
 #include "mxcriticalsection.h"
 #include "mxcore.h"
 
 // VTABLE 0x100dc968
+// SIZE 0x64
 class MxStreamController : public MxCore
 {
 public:
+  MxStreamController();
+
+  virtual ~MxStreamController() override; // vtable+0x0
+
   // OFFSET: LEGO1 0x100c0f10
   inline virtual const char *ClassName() const override // vtable+0xc
   {
@@ -22,12 +28,15 @@ class MxStreamController : public MxCore
     return !strcmp(name, MxStreamController::ClassName()) || MxCore::IsA(name);
   }
 
-  MxBool IsStillInUse();
+  virtual MxResult Open(const char *p_filename); // vtable+0x14
+
+  MxBool CanBeDeleted();
 
   MxCriticalSection m_criticalSection;
   MxAtomId atom;
   int m_unk28;
   int m_unk2c;
+  undefined m_unk30[0x34];
 };
 
 #endif // MXSTREAMCONTROLLER_H