implement MxDSBuffer object creation (#340)

* push changes

* Update mxstreamcontroller.cpp

* fix build

* MxStreamChunk

* fix format

* Match functions

* Add a comment

---------

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

CMakeLists.txt

@@ -172,6 +172,7 @@ add_library(lego1 SHARED
   LEGO1/mxsoundmanager.cpp
   LEGO1/mxsoundpresenter.cpp
   LEGO1/mxstillpresenter.cpp
+  LEGO1/mxstreamchunk.cpp
   LEGO1/mxstreamchunklist.cpp
   LEGO1/mxstreamcontroller.cpp
   LEGO1/mxstreamer.cpp

LEGO1/legoomni.cpp

@@ -731,7 +731,7 @@ void SetOmniUserMessage(void (*p_userMsg)(const char*, int))
 // FUNCTION: LEGO1 0x100c0280
 MxDSObject* CreateStreamObject(MxDSFile* p_file, MxS16 p_ofs)
 {
-	char* buf;
+	MxU8* buf;
 	_MMCKINFO tmpChunk;
 
 	if (p_file->Seek(((MxLong*) p_file->GetBuffer())[p_ofs], 0)) {
@@ -741,18 +741,18 @@ MxDSObject* CreateStreamObject(MxDSFile* p_file, MxS16 p_ofs)
 	if (p_file->Read((MxU8*) &tmpChunk.ckid, 8) == 0 && tmpChunk.ckid == FOURCC('M', 'x', 'S', 't')) {
 		if (p_file->Read((MxU8*) &tmpChunk.ckid, 8) == 0 && tmpChunk.ckid == FOURCC('M', 'x', 'O', 'b')) {
 
-			buf = new char[tmpChunk.cksize];
+			buf = new MxU8[tmpChunk.cksize];
 			if (!buf) {
 				return NULL;
 			}
 
-			if (p_file->Read((MxU8*) buf, tmpChunk.cksize) != 0) {
+			if (p_file->Read(buf, tmpChunk.cksize) != 0) {
 				return NULL;
 			}
 
 			// Save a copy so we can clean up properly, because
 			// this function will alter the pointer value.
-			char* copy = buf;
+			MxU8* copy = buf;
 			MxDSObject* obj = DeserializeDSObjectDispatch(&buf, -1);
 			delete[] copy;
 			return obj;

LEGO1/legoutil.h

@@ -27,7 +27,7 @@ inline T Max(T p_t1, T p_t2)
 }
 
 template <class T>
-inline void GetScalar(char** p_source, T& p_dest)
+inline void GetScalar(MxU8** p_source, T& p_dest)
 {
 	p_dest = *(T*) *p_source;
 	*p_source += sizeof(T);
@@ -42,16 +42,16 @@ inline T GetScalar(T** p_source)
 }
 
 template <class T>
-inline void GetDouble(char** p_source, T& p_dest)
+inline void GetDouble(MxU8** p_source, T& p_dest)
 {
 	p_dest = *(double*) *p_source;
 	*p_source += sizeof(double);
 }
 
 template <class T>
-inline void GetString(char** p_source, const char* p_dest, T* p_obj, void (T::*p_setter)(const char*))
+inline void GetString(MxU8** p_source, const char* p_dest, T* p_obj, void (T::*p_setter)(const char*))
 {
-	(p_obj->*p_setter)(*p_source);
+	(p_obj->*p_setter)((char*) *p_source);
 	*p_source += strlen(p_dest) + 1;
 }
 

LEGO1/mxdiskstreamcontroller.cpp

@@ -115,6 +115,13 @@ MxResult MxDiskStreamController::VTable0x24(MxDSAction* p_action)
 	return FAILURE;
 }
 
+// FUNCTION: LEGO1 0x100c84a0
+void MxDiskStreamController::InsertToList74(MxDSBuffer* p_buffer)
+{
+	MxAutoLocker lock(&this->m_criticalSection);
+	m_list0x74.push_back(p_buffer);
+}
+
 // STUB: LEGO1 0x100c8640
 MxResult MxDiskStreamController::Tickle()
 {

LEGO1/mxdiskstreamcontroller.h

@@ -51,6 +51,7 @@ class MxDiskStreamController : public MxStreamController {
 	undefined m_unk0xc4;               // 0xc4
 
 	void FUN_100c7f40(MxDSStreamingAction* p_streamingaction);
+	void InsertToList74(MxDSBuffer* p_buffer);
 };
 
 // TEMPLATE: LEGO1 0x100c7330

LEGO1/mxdsaction.cpp

@@ -205,7 +205,7 @@ void MxDSAction::AppendData(MxU16 p_extraLength, const char* p_extraData)
 }
 
 // FUNCTION: LEGO1 0x100adf70
-void MxDSAction::Deserialize(char** p_source, MxS16 p_unk0x24)
+void MxDSAction::Deserialize(MxU8** p_source, MxS16 p_unk0x24)
 {
 	MxDSObject::Deserialize(p_source, p_unk0x24);
 
@@ -225,7 +225,7 @@ void MxDSAction::Deserialize(char** p_source, MxS16 p_unk0x24)
 
 	MxU16 extraLength = GetScalar((MxU16**) p_source);
 	if (extraLength) {
-		AppendData(extraLength, *p_source);
+		AppendData(extraLength, (char*) *p_source);
 		*p_source += extraLength;
 	}
 }

LEGO1/mxdsaction.h

@@ -44,7 +44,7 @@ class MxDSAction : public MxDSObject {
 	}
 
 	virtual MxU32 GetSizeOnDisk() override;                              // vtable+18;
-	virtual void Deserialize(char** p_source, MxS16 p_unk0x24) override; // vtable+1c;
+	virtual void Deserialize(MxU8** p_source, MxS16 p_unk0x24) override; // vtable+1c;
 	virtual MxLong GetDuration();                                        // vtable+24;
 	virtual void SetDuration(MxLong p_duration);                         // vtable+28;
 	virtual MxDSAction* Clone();                                         // vtable+2c;

LEGO1/mxdsbuffer.cpp

@@ -1,6 +1,9 @@
 #include "mxdsbuffer.h"
 
+#include "mxdschunk.h"
+#include "mxdsstreamingaction.h"
 #include "mxomni.h"
+#include "mxstreamchunk.h"
 #include "mxstreamcontroller.h"
 #include "mxstreamer.h"
 
@@ -9,7 +12,7 @@ DECOMP_SIZE_ASSERT(MxDSBuffer, 0x34);
 // FUNCTION: LEGO1 0x100c6470
 MxDSBuffer::MxDSBuffer()
 {
-	m_unk0x20 = 0;
+	m_refcount = 0;
 	m_pBuffer = NULL;
 	m_pIntoBuffer = NULL;
 	m_pIntoBuffer2 = NULL;
@@ -49,7 +52,7 @@ MxResult MxDSBuffer::AllocateBuffer(MxU32 p_bufferSize, MxDSBufferType p_mode)
 	else if (p_mode == MxDSBufferType_Chunk) {
 		MxStreamer* streamer = Streamer();
 		// I have no clue as to what this does, or even if its correct. Maybe it's related to storing chunks in
-		// MxRamStreamController?
+		// MxDiskStreamController?
 		if (p_bufferSize >> 10 == 0x40) {
 			i = 0;
 			while (i < 22) {
@@ -126,6 +129,132 @@ MxResult MxDSBuffer::FUN_100c67b0(MxStreamController* p_controller, MxDSAction*
 	return FAILURE;
 }
 
+// FUNCTION: LEGO1 0x100c68a0
+MxResult MxDSBuffer::CreateObject(
+	MxStreamController* p_controller,
+	MxU32* p_data,
+	MxDSAction* p_action,
+	undefined4 p_undefined
+)
+{
+	if (p_data == NULL) {
+		return FAILURE;
+	}
+
+	MxCore* header = ReadChunk(this, p_data, p_action->GetUnknown24());
+
+	if (header == NULL) {
+		return FAILURE;
+	}
+
+	if (*p_data == FOURCC('M', 'x', 'O', 'b'))
+		return StartPresenterFromAction(p_controller, p_action, (MxDSAction*) header);
+	else if (*p_data == FOURCC('M', 'x', 'C', 'h')) {
+		MxStreamChunk* chunk = (MxStreamChunk*) header;
+		if (!m_unk0x30->HasId((chunk)->GetObjectId())) {
+			delete header;
+			return SUCCESS;
+		}
+
+		return ParseChunk(p_controller, p_data, p_action, p_undefined, chunk);
+	}
+
+	delete header;
+	return FAILURE;
+}
+
+// FUNCTION: LEGO1 0x100c6960
+MxResult MxDSBuffer::StartPresenterFromAction(
+	MxStreamController* p_controller,
+	MxDSAction* p_action1,
+	MxDSAction* p_objectheader
+)
+{
+	if (!m_unk0x30->GetInternalAction()) {
+		p_objectheader->SetAtomId(p_action1->GetAtomId());
+		p_objectheader->SetUnknown28(p_action1->GetUnknown28());
+		p_objectheader->SetUnknown84(p_action1->GetUnknown84());
+		p_objectheader->SetOrigin(p_action1->GetOrigin());
+		p_objectheader->SetUnknown90(p_action1->GetUnknown90());
+		p_objectheader->MergeFrom(*p_action1);
+
+		m_unk0x30->SetInternalAction(p_objectheader->Clone());
+
+		p_controller->InsertActionToList54(p_objectheader);
+
+		if (MxOmni::GetInstance()->CreatePresenter(p_controller, *p_objectheader) != SUCCESS) {
+			return FAILURE;
+		}
+
+		m_unk0x30->SetLoopCount(p_objectheader->GetLoopCount());
+		m_unk0x30->SetFlags(p_objectheader->GetFlags());
+		m_unk0x30->SetDuration(p_objectheader->GetDuration());
+
+		if (m_unk0x30->GetInternalAction() == NULL) {
+			return FAILURE;
+		}
+	}
+	else if (p_objectheader) {
+		delete p_objectheader;
+	}
+
+	return SUCCESS;
+}
+
+// STUB: LEGO1 0x100c6a50
+MxResult MxDSBuffer::ParseChunk(
+	MxStreamController* p_controller,
+	MxU32* p_data,
+	MxDSAction* p_action,
+	undefined4,
+	MxStreamChunk* p_header
+)
+{
+	// TODO
+	return FAILURE;
+}
+
+// FUNCTION: LEGO1 0x100c6d00
+MxCore* MxDSBuffer::ReadChunk(MxDSBuffer* p_buffer, MxU32* p_chunkData, MxU16 p_flags)
+{
+	// This function reads a chunk. If it is an object, this function returns an MxDSObject. If it is a chunk, returns a
+	// MxDSChunk.
+	MxCore* result = NULL;
+	MxU8* dataStart = (MxU8*) p_chunkData + 8;
+
+	switch (*p_chunkData) {
+	case FOURCC('M', 'x', 'O', 'b'):
+		result = DeserializeDSObjectDispatch(&dataStart, p_flags);
+		break;
+	case FOURCC('M', 'x', 'C', 'h'):
+		result = new MxStreamChunk();
+		if (result != NULL && ((MxStreamChunk*) result)->ReadChunk(p_buffer, (MxU8*) p_chunkData) != SUCCESS) {
+			delete result;
+			result = NULL;
+		}
+		return result;
+	}
+
+	return result;
+}
+
+// FUNCTION: LEGO1 0x100c6ec0
+MxU8 MxDSBuffer::ReleaseRef(MxDSChunk*)
+{
+	if (m_refcount != 0) {
+		m_refcount--;
+	}
+	return 0;
+}
+
+// FUNCTION: LEGO1 0x100c6ee0
+void MxDSBuffer::AddRef(MxDSChunk* p_chunk)
+{
+	if (p_chunk) {
+		m_refcount++;
+	}
+}
+
 // FUNCTION: LEGO1 0x100c6f80
 void MxDSBuffer::FUN_100c6f80(MxU32 p_writeOffset)
 {

LEGO1/mxdsbuffer.h

@@ -6,6 +6,9 @@
 
 class MxStreamController;
 class MxDSAction;
+class MxDSStreamingAction;
+class MxStreamChunk;
+class MxDSChunk;
 
 enum MxDSBufferType {
 	MxDSBufferType_Chunk = 0,
@@ -31,23 +34,40 @@ class MxDSBuffer : public MxCore {
 	MxResult AllocateBuffer(MxU32 p_bufferSize, MxDSBufferType p_mode);
 	MxResult SetBufferPointer(MxU32* p_buffer, MxU32 p_size);
 	MxResult FUN_100c67b0(MxStreamController* p_controller, MxDSAction* p_action, undefined4*);
+	MxResult CreateObject(
+		MxStreamController* p_controller,
+		MxU32* p_data,
+		MxDSAction* p_action,
+		undefined4 p_undefined
+	);
+	MxResult StartPresenterFromAction(MxStreamController* p_controller, MxDSAction* p_action1, MxDSAction* p_action2);
+	MxResult ParseChunk(
+		MxStreamController* p_controller,
+		MxU32* p_data,
+		MxDSAction* p_action,
+		undefined4,
+		MxStreamChunk* p_header
+	);
+	static MxCore* ReadChunk(MxDSBuffer* p_buffer, MxU32* p_chunkData, MxU16 p_flags);
+	MxU8 ReleaseRef(MxDSChunk*);
+	void AddRef(MxDSChunk* p_chunk);
 	void FUN_100c6f80(MxU32 p_writeOffset);
 
 	inline MxU8* GetBuffer() { return m_pBuffer; }
 	inline MxU32 GetWriteOffset() { return m_writeOffset; }
 
 private:
-	MxU8* m_pBuffer;
+	MxU8* m_pBuffer;                // 0x08
-	MxU8* m_pIntoBuffer;
+	MxU8* m_pIntoBuffer;            // 0x0c
-	MxU8* m_pIntoBuffer2;
+	MxU8* m_pIntoBuffer2;           // 0x10
-	undefined4 m_unk0x14;
+	undefined4 m_unk0x14;           // 0x14
-	undefined4 m_unk0x18;
+	undefined4 m_unk0x18;           // 0x18
-	undefined4 m_unk0x1c;
+	undefined4 m_unk0x1c;           // 0x1c
-	undefined2 m_unk0x20;
+	MxU16 m_refcount;               // 0x20
-	MxDSBufferType m_mode;
+	MxDSBufferType m_mode;          // 0x24
-	MxU32 m_writeOffset;
+	MxU32 m_writeOffset;            // 0x28
-	MxU32 m_bytesRemaining;
+	MxU32 m_bytesRemaining;         // 0x2c
-	MxDSAction* m_unk0x30;
+	MxDSStreamingAction* m_unk0x30; // 0x30
 };
 
 #endif // MXDSBUFFER_H

LEGO1/mxdschunk.cpp

@@ -7,7 +7,7 @@ MxDSChunk::MxDSChunk()
 {
 	m_flags = 0;
 	m_data = NULL;
-	m_unk0x0c = -1;
+	m_objectId = -1;
 	m_time = 0;
 	m_length = 0;
 }

LEGO1/mxdschunk.h

@@ -34,6 +34,7 @@ class MxDSChunk : public MxCore {
 	}
 
 	inline void SetFlags(MxU16 p_flags) { m_flags = p_flags; }
+	inline void SetObjectId(undefined4 p_objectid) { m_objectId = p_objectid; }
 	inline void SetTime(MxLong p_time) { m_time = p_time; }
 	inline void SetLength(MxU32 p_length) { m_length = p_length; }
 	inline void SetData(MxU8* p_data) { m_data = p_data; }
@@ -43,15 +44,17 @@ class MxDSChunk : public MxCore {
 	inline MxU32 GetLength() { return m_length; }
 	inline MxU8* GetData() { return m_data; }
 
+	inline undefined4 GetObjectId() { return m_objectId; }
+
 	inline void Release()
 	{
 		if (m_data)
 			delete[] m_data;
 	}
 
-private:
+protected:
 	MxU16 m_flags;         // 0x8
-	undefined4 m_unk0x0c; // 0xc
+	undefined4 m_objectId; // 0xc
 	MxLong m_time;         // 0x10
 	MxU32 m_length;        // 0x14
 	MxU8* m_data;          // 0x18

LEGO1/mxdsmediaaction.cpp

@@ -80,7 +80,7 @@ MxU32 MxDSMediaAction::GetSizeOnDisk()
 }
 
 // FUNCTION: LEGO1 0x100c8f60
-void MxDSMediaAction::Deserialize(char** p_source, MxS16 p_unk0x24)
+void MxDSMediaAction::Deserialize(MxU8** p_source, MxS16 p_unk0x24)
 {
 	MxDSAction::Deserialize(p_source, p_unk0x24);
 

LEGO1/mxdsmediaaction.h

@@ -29,7 +29,7 @@ class MxDSMediaAction : public MxDSAction {
 	}
 
 	virtual MxU32 GetSizeOnDisk() override;                              // vtable+18;
-	virtual void Deserialize(char** p_source, MxS16 p_unk0x24) override; // vtable+1c;
+	virtual void Deserialize(MxU8** p_source, MxS16 p_unk0x24) override; // vtable+1c;
 
 	void CopyMediaSrcPath(const char* p_mediaSrcPath);
 

LEGO1/mxdsmultiaction.cpp

@@ -117,7 +117,7 @@ MxU32 MxDSMultiAction::GetSizeOnDisk()
 }
 
 // FUNCTION: LEGO1 0x100ca7b0
-void MxDSMultiAction::Deserialize(char** p_source, MxS16 p_unk0x24)
+void MxDSMultiAction::Deserialize(MxU8** p_source, MxS16 p_unk0x24)
 {
 	MxDSAction::Deserialize(p_source, p_unk0x24);
 

LEGO1/mxdsmultiaction.h

@@ -29,7 +29,7 @@ class MxDSMultiAction : public MxDSAction {
 
 	virtual undefined4 VTable0x14() override;                            // vtable+14;
 	virtual MxU32 GetSizeOnDisk() override;                              // vtable+18;
-	virtual void Deserialize(char** p_source, MxS16 p_unk0x24) override; // vtable+1c;
+	virtual void Deserialize(MxU8** p_source, MxS16 p_unk0x24) override; // vtable+1c;
 	virtual void SetAtomId(MxAtomId p_atomId) override;                  // vtable+20;
 	virtual MxDSAction* Clone() override;                                // vtable+2c;
 	virtual void MergeFrom(MxDSAction& p_dsAction) override;             // vtable+30;

LEGO1/mxdsobject.cpp

@@ -127,7 +127,7 @@ MxU32 MxDSObject::GetSizeOnDisk()
 }
 
 // FUNCTION: LEGO1 0x100bfa20
-void MxDSObject::Deserialize(char** p_source, MxS16 p_unk0x24)
+void MxDSObject::Deserialize(MxU8** p_source, MxS16 p_unk0x24)
 {
 	GetString(p_source, this->m_sourceName, this, &MxDSObject::SetSourceName);
 	GetScalar(p_source, this->m_unk0x14);
@@ -138,7 +138,7 @@ void MxDSObject::Deserialize(char** p_source, MxS16 p_unk0x24)
 }
 
 // FUNCTION: LEGO1 0x100bfb30
-MxDSObject* DeserializeDSObjectDispatch(char** p_source, MxS16 p_flags)
+MxDSObject* DeserializeDSObjectDispatch(MxU8** p_source, MxS16 p_flags)
 {
 	MxU16 type = *(MxU16*) *p_source;
 	*p_source += 2;

LEGO1/mxdsobject.h

@@ -32,7 +32,7 @@ class MxDSObject : public MxCore {
 
 	virtual undefined4 VTable0x14();                                                // vtable+14;
 	virtual MxU32 GetSizeOnDisk();                                                  // vtable+18;
-	virtual void Deserialize(char** p_source, MxS16 p_unk0x24);                     // vtable+1c;
+	virtual void Deserialize(MxU8** p_source, MxS16 p_unk0x24);                     // vtable+1c;
 	inline virtual void SetAtomId(MxAtomId p_atomId) { this->m_atomId = p_atomId; } // vtable+20;
 
 	inline MxDSType GetType() const { return (MxDSType) this->m_type; }
@@ -61,7 +61,7 @@ class MxDSObject : public MxCore {
 	MxPresenter* m_unk0x28; // 0x28
 };
 
-MxDSObject* DeserializeDSObjectDispatch(char**, MxS16);
+MxDSObject* DeserializeDSObjectDispatch(MxU8**, MxS16);
 
 // FUNCTION: ISLE 0x401c40
 // MxDSObject::SetAtomId

LEGO1/mxdsselectaction.cpp

@@ -74,7 +74,7 @@ MxU32 MxDSSelectAction::GetSizeOnDisk()
 }
 
 // FUNCTION: LEGO1 0x100cbf60
-void MxDSSelectAction::Deserialize(char** p_source, MxS16 p_unk0x24)
+void MxDSSelectAction::Deserialize(MxU8** p_source, MxS16 p_unk0x24)
 {
 	MxString string;
 	MxDSAction::Deserialize(p_source, p_unk0x24);
@@ -82,7 +82,7 @@ void MxDSSelectAction::Deserialize(char** p_source, MxS16 p_unk0x24)
 	MxU32 extraFlag = *(MxU32*) (*p_source + 4) & 1;
 	*p_source += 12;
 
-	this->m_unk0x9c = *p_source;
+	this->m_unk0x9c = (char*) *p_source;
 
 	if (!strnicmp(this->m_unk0x9c.GetData(), "RANDOM_", strlen("RANDOM_"))) {
 		char buffer[10];
@@ -93,9 +93,9 @@ void MxDSSelectAction::Deserialize(char** p_source, MxS16 p_unk0x24)
 		string = itoa((MxS16) random, buffer, 10);
 	}
 	else
-		string = VariableTable()->GetVariable(*p_source);
+		string = VariableTable()->GetVariable((char*) *p_source);
 
-	*p_source += strlen(*p_source) + 1;
+	*p_source += strlen((char*) *p_source) + 1;
 
 	MxU32 count = *(MxU32*) *p_source;
 	*p_source += sizeof(MxU32);
@@ -106,11 +106,11 @@ void MxDSSelectAction::Deserialize(char** p_source, MxS16 p_unk0x24)
 
 		MxU32 i;
 		for (i = 0; i < count; i++) {
-			if (!strcmp(string.GetData(), *p_source))
+			if (!strcmp(string.GetData(), (char*) *p_source))
 				index = i;
 
-			this->m_unk0xac->Append(*p_source);
+			this->m_unk0xac->Append((char*) *p_source);
-			*p_source += strlen(*p_source) + 1;
+			*p_source += strlen((char*) *p_source) + 1;
 		}
 
 		for (i = 0; i < count; i++) {

LEGO1/mxdsselectaction.h

@@ -29,7 +29,7 @@ class MxDSSelectAction : public MxDSParallelAction {
 	}
 
 	virtual MxU32 GetSizeOnDisk() override;                              // vtable+18;
-	virtual void Deserialize(char** p_source, MxS16 p_unk0x24) override; // vtable+1c;
+	virtual void Deserialize(MxU8** p_source, MxS16 p_unk0x24) override; // vtable+1c;
 	virtual MxDSAction* Clone() override;                                // vtable+2c;
 
 private:

LEGO1/mxdssound.cpp

@@ -46,7 +46,7 @@ MxDSAction* MxDSSound::Clone()
 }
 
 // FUNCTION: LEGO1 0x100c95a0
-void MxDSSound::Deserialize(char** p_source, MxS16 p_unk0x24)
+void MxDSSound::Deserialize(MxU8** p_source, MxS16 p_unk0x24)
 {
 	MxDSMediaAction::Deserialize(p_source, p_unk0x24);
 

LEGO1/mxdssound.h

@@ -27,7 +27,7 @@ class MxDSSound : public MxDSMediaAction {
 	}
 
 	virtual MxU32 GetSizeOnDisk() override;                              // vtable+18;
-	virtual void Deserialize(char** p_source, MxS16 p_unk0x24) override; // vtable+1c;
+	virtual void Deserialize(MxU8** p_source, MxS16 p_unk0x24) override; // vtable+1c;
 	virtual MxDSAction* Clone() override;                                // vtable+2c;
 
 	inline MxS32 GetVolume() const { return m_volume; }

LEGO1/mxdsstreamingaction.h

@@ -34,6 +34,7 @@ class MxDSStreamingAction : public MxDSAction {
 	inline MxU32 GetUnknown94() { return m_unk0x94; }
 	inline MxDSBuffer* GetUnknowna0() { return m_unk0xa0; }
 	inline MxDSBuffer* GetUnknowna4() { return m_unk0xa4; }
+	inline MxDSAction* GetInternalAction() { return m_internalAction; }
 	inline void SetUnknowna0(MxDSBuffer* p_unk0xa0) { m_unk0xa0 = p_unk0xa0; }
 
 private:

LEGO1/mxpresenter.h

@@ -10,6 +10,7 @@
 
 class MxCompositePresenter;
 class MxStreamController;
+class MxPresenter;
 
 // VTABLE: LEGO1 0x100d4d38
 // SIZE 0x40

LEGO1/mxstreamchunk.cpp

@@ -0,0 +1,55 @@
+#include "mxstreamchunk.h"
+
+#include "legoutil.h"
+#include "mxdsbuffer.h"
+
+// FUNCTION: LEGO1 0x100c2fe0
+MxStreamChunk::~MxStreamChunk()
+{
+	if (m_buffer) {
+		m_buffer->ReleaseRef(this);
+	}
+}
+
+// FUNCTION: LEGO1 0x100c3050
+MxResult MxStreamChunk::ReadChunk(MxDSBuffer* p_buffer, MxU8* p_chunkData)
+{
+	MxResult result = FAILURE;
+
+	if (p_chunkData != NULL && *(MxU32*) p_chunkData == FOURCC('M', 'x', 'C', 'h')) {
+		if (ReadChunkHeader(p_chunkData + 8)) {
+			if (p_buffer) {
+				SetBuffer(p_buffer);
+				p_buffer->AddRef(this);
+			}
+			result = SUCCESS;
+		}
+	}
+
+	return result;
+}
+
+// FUNCTION: LEGO1 0x100c30a0
+MxU32 MxStreamChunk::ReadChunkHeader(MxU8* p_chunkData)
+{
+	MxU32 headersize = 0;
+	if (p_chunkData) {
+		MxU8* chunkData = p_chunkData;
+		// Note: the alpha debug version uses memcpy calls here,
+		// but the code generation is the same.
+		GetScalar(&p_chunkData, m_flags);
+		GetScalar(&p_chunkData, m_objectId);
+		GetScalar(&p_chunkData, m_time);
+		GetScalar(&p_chunkData, m_length);
+		m_data = p_chunkData;
+		headersize = p_chunkData - chunkData;
+	}
+
+	return headersize;
+}
+
+// FUNCTION: LEGO1 0x100c3170
+void MxStreamChunk::SetBuffer(MxDSBuffer* p_buffer)
+{
+	m_buffer = p_buffer;
+}

LEGO1/mxstreamchunk.h

@@ -3,11 +3,14 @@
 
 #include "mxdschunk.h"
 
+class MxDSBuffer;
+
 // VTABLE: LEGO1 0x100dc2a8
 // SIZE 0x20
 class MxStreamChunk : public MxDSChunk {
 public:
-	inline MxStreamChunk() : m_unk0x1c(NULL) {}
+	inline MxStreamChunk() : m_buffer(NULL) {}
+	virtual ~MxStreamChunk() override;
 
 	// FUNCTION: LEGO1 0x100b1fe0
 	inline virtual const char* ClassName() const override // vtable+0xc
@@ -22,8 +25,17 @@ class MxStreamChunk : public MxDSChunk {
 		return !strcmp(p_name, MxStreamChunk::ClassName()) || MxDSChunk::IsA(p_name);
 	}
 
+	inline MxDSBuffer* GetBuffer() { return m_buffer; }
+
+	MxResult ReadChunk(MxDSBuffer* p_buffer, MxU8* p_chunkData);
+	MxU32 ReadChunkHeader(MxU8* p_chunkData);
+	void SetBuffer(MxDSBuffer* p_buffer);
+
 private:
-	void* m_unk0x1c; // 0x1c
+	MxDSBuffer* m_buffer; // 0x1c
 };
 
+// SYNTHETIC: LEGO1 0x100b20a0
+// MxStreamChunk::`scalar deleting destructor'
+
 #endif // MXSTREAMCHUNK_H

LEGO1/mxstreamcontroller.cpp

@@ -133,6 +133,21 @@ MxResult MxStreamController::VTable0x30(MxDSAction* p_action)
 	return result;
 }
 
+// FUNCTION: LEGO1 0x100c1da0
+MxResult MxStreamController::InsertActionToList54(MxDSAction* p_action)
+{
+	MxAutoLocker locker(&m_criticalSection);
+	MxDSAction* action = p_action->Clone();
+
+	if (action == NULL) {
+		return FAILURE;
+	}
+	else {
+		m_unk0x54.push_back(action);
+		return SUCCESS;
+	}
+}
+
 // FUNCTION: LEGO1 0x100c1e70
 MxPresenter* MxStreamController::FUN_100c1e70(MxDSAction& p_action)
 {

LEGO1/mxstreamcontroller.h

@@ -45,6 +45,7 @@ class MxStreamController : public MxCore {
 	MxBool FUN_100c20d0(MxDSObject& p_obj);
 	MxResult FUN_100c1a00(MxDSAction* p_action, MxU32 p_bufferval);
 	MxPresenter* FUN_100c1e70(MxDSAction& p_action);
+	MxResult InsertActionToList54(MxDSAction* p_action);
 	MxResult FUN_100c1f00(MxDSAction* p_action);
 
 	inline MxAtomId& GetAtom() { return m_atom; };