MxDiskStreamController vtable (#197)

* mxdiskstreamcontroller vtable + MxStreamController::vtable0x20

* stub MxDiskStreamController::Open

* MxDiskStreamProvider

* MxNextActionDataStart

* Revert "MxNextActionDataStart"

This reverts commit 41e8cfa2f1.

* Match MxStreamController::vtable0x20

---------

Co-authored-by: Christian Semmler <mail@csemmler.com>

LEGO1/mxdiskstreamprovider.cpp

@@ -45,4 +45,41 @@ MxResult MxDiskStreamProvider::WaitForWorkToComplete()
 void MxDiskStreamProvider::PerformWork()
 {
   // TODO
-}
+}
+
+// OFFSET: LEGO1 0x100d13d0 STUB
+MxResult MxDiskStreamProvider::SetResourceToGet(void* p_resource)
+{
+  // TODO
+  return FAILURE;
+}
+
+// OFFSET: LEGO1 0x100d1e90
+MxU32 MxDiskStreamProvider::GetFileSize()
+{
+  return m_pFile->GetBufferSize();
+}
+
+// OFFSET: LEGO1 0x100d1ea0
+MxU32 MxDiskStreamProvider::GetStreamBuffersNum()
+{
+  return m_pFile->GetStreamBuffersNum();
+}
+
+// OFFSET: LEGO1 0x100d15e0 STUB
+void MxDiskStreamProvider::vtable0x20(undefined4 p_unknown1)
+{
+  // TODO
+}
+
+// OFFSET: LEGO1 0x100d1eb0
+MxU32 MxDiskStreamProvider::GetLengthInDWords()
+{
+  return m_pFile->GetLengthInDWords();
+}
+
+// OFFSET: LEGO1 0x100d1ec0
+MxU32* MxDiskStreamProvider::GetBufferForDWords()
+{
+  return m_pFile->GetBuffer();
+}