Implement chunk parsing (#362)

* partial parsechunk implementation

* fix format

* param name fix

* rename functions

* match MxStreamController::RemoveSubscriber

* implement rest of MxDSBuffer

* Fixes and better matches

* Matche ParseChunk 100%

* Match MxDiskStreamProvider::VTable0x20

* Match MxDSBuffer::CalcBytesRemaining

* Minor stuff

* Minor improvements

* Refactor functions

---------

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

LEGO1/mxdiskstreamprovider.cpp

@@ -77,10 +77,47 @@ MxResult MxDiskStreamProvider::SetResourceToGet(MxStreamController* p_resource)
 	return result;
 }
 
-// STUB: LEGO1 0x100d15e0
+// FUNCTION: LEGO1 0x100d15e0
 void MxDiskStreamProvider::VTable0x20(MxDSAction* p_action)
 {
-	// TODO
+	MxDSStreamingAction* action;
+
+	if (p_action->GetObjectId() == -1) {
+		m_unk0x35 = FALSE;
+
+		do {
+			action = NULL;
+
+			{
+				MxAutoLocker lock(&m_criticalSection);
+				m_list.PopFrontStreamingAction(action);
+			}
+
+			if (!action)
+				return;
+
+			if (action->GetUnknowna0()->GetWriteOffset() < 0x20000)
+				g_unk0x10102878--;
+
+			((MxDiskStreamController*) m_pLookup)->FUN_100c8670(action);
+		} while (action);
+	}
+	else {
+		do {
+			{
+				MxAutoLocker lock(&m_criticalSection);
+				action = (MxDSStreamingAction*) m_list.Find(p_action, TRUE);
+			}
+
+			if (!action)
+				return;
+
+			if (action->GetUnknowna0()->GetWriteOffset() < 0x20000)
+				g_unk0x10102878--;
+
+			((MxDiskStreamController*) m_pLookup)->FUN_100c8670(action);
+		} while (action);
+	}
 }
 
 // FUNCTION: LEGO1 0x100d1750

LEGO1/mxdsbuffer.cpp

@@ -30,11 +30,45 @@ MxDSBuffer::MxDSBuffer()
 MxDSBuffer::~MxDSBuffer()
 {
 	if (m_pBuffer != NULL) {
-		if (m_mode == MxDSBufferType_Chunk) {
+		switch (m_mode) {
-			// TODO
+		case MxDSBufferType_Allocate:
-		}
+		case MxDSBufferType_Unknown:
-		else if (m_mode == MxDSBufferType_Allocate || m_mode == MxDSBufferType_Unknown) {
 			delete[] m_pBuffer;
+			break;
+
+		case MxDSBufferType_Chunk: {
+			MxU32 offset = m_writeOffset / 1024;
+			MxStreamer* streamer = Streamer();
+
+			switch (offset) {
+			case 0x40: {
+				MxU32 a =
+					(m_pBuffer - streamer->GetSubclass1().GetBuffer()) / (streamer->GetSubclass1().GetSize() << 10);
+
+				MxU32 bit = 1 << ((MxU8) a & 0x1f);
+				MxU32 index = (a & ~0x18u) >> 3;
+
+				if ((*(MxU32*) (&streamer->GetSubclass1().GetUnk08Ref()[index])) & bit) {
+					MxU32* ptr = (MxU32*) (&streamer->GetSubclass1().GetUnk08Ref()[index]);
+					*ptr = *ptr ^ bit;
+				}
+				break;
+			}
+			case 0x80: {
+				MxU32 a =
+					(m_pBuffer - streamer->GetSubclass1().GetBuffer()) / (streamer->GetSubclass1().GetSize() << 10);
+
+				MxU32 bit = 1 << ((MxU8) a & 0x1f);
+				MxU32 index = (a & ~0x18u) >> 3;
+
+				if ((*(MxU32*) (&streamer->GetSubclass2().GetUnk08Ref()[index])) & bit) {
+					MxU32* ptr = (MxU32*) (&streamer->GetSubclass2().GetUnk08Ref()[index]);
+					*ptr = *ptr ^ bit;
+				}
+				break;
+			}
+			}
+		}
 		}
 	}
 
@@ -246,7 +280,7 @@ MxResult MxDSBuffer::StartPresenterFromAction(
 	return SUCCESS;
 }
 
-// STUB: LEGO1 0x100c6a50
+// FUNCTION: LEGO1 0x100c6a50
 MxResult MxDSBuffer::ParseChunk(
 	MxStreamController* p_controller,
 	MxU32* p_data,
@@ -255,8 +289,83 @@ MxResult MxDSBuffer::ParseChunk(
 	MxStreamChunk* p_header
 )
 {
-	// TODO
+	MxResult result = SUCCESS;
-	return FAILURE;
+
+	if (m_unk0x30->GetFlags() & MxDSAction::Flag_Bit3 && m_unk0x30->GetUnknowna8() && p_header->GetTime() < 0) {
+		delete p_header;
+		return SUCCESS;
+	}
+
+	p_header->SetTime(p_header->GetTime() + m_unk0x30->GetUnknowna8());
+
+	if (p_header->GetFlags() & MxDSChunk::Flag_Bit5) {
+		MxU32 length = p_header->GetLength() + MxDSChunk::ReturnE() + 8;
+		MxDSBuffer* buffer = new MxDSBuffer();
+
+		if (buffer && buffer->AllocateBuffer(length, MxDSBufferType_Allocate) == SUCCESS &&
+			buffer->CalcBytesRemaining((MxU8*) p_data) == SUCCESS) {
+			*p_streamingAction = new MxDSStreamingAction((MxDSStreamingAction&) *p_action);
+			;
+
+			if (*p_streamingAction) {
+				MxU16* flags = MxStreamChunk::IntoFlags(buffer->GetBuffer());
+				*flags = p_header->GetFlags() & ~MxDSChunk::Flag_Bit5;
+
+				delete p_header;
+				(*p_streamingAction)->SetUnknowna0(buffer);
+				goto done;
+			}
+		}
+
+		if (buffer)
+			delete buffer;
+
+		delete p_header;
+		return FAILURE;
+	}
+	else {
+		if (p_header->GetFlags() & MxDSChunk::Flag_Bit2) {
+			if (m_unk0x30->HasId(p_header->GetObjectId())) {
+				if (m_unk0x30->GetFlags() & MxDSAction::Flag_Bit3 &&
+					(m_unk0x30->GetLoopCount() > 1 || m_unk0x30->GetDuration() == -1)) {
+
+					if (p_action->GetObjectId() == p_header->GetObjectId()) {
+						MxU32 val = p_controller->GetProvider()->GetBufferForDWords()[m_unk0x30->GetObjectId()];
+
+						m_unk0x30->SetUnknown94(val);
+						m_unk0x30->SetBufferOffset(m_writeOffset * (val / m_writeOffset));
+
+						MxNextActionDataStart* data =
+							p_controller->FindNextActionDataStartFromStreamingAction(m_unk0x30);
+
+						if (data)
+							data->SetData(m_unk0x30->GetBufferOffset());
+
+						m_unk0x30->FUN_100cd2d0();
+					}
+
+					delete p_header;
+					p_header = NULL;
+				}
+				else {
+					if (p_action->GetObjectId() == p_header->GetObjectId() &&
+						p_controller->VTable0x30(p_action) == SUCCESS) {
+						p_controller->GetProvider()->VTable0x20(p_action);
+						result = 1;
+					}
+				}
+			}
+		}
+
+		if (p_header) {
+			if (p_header->SendChunk(p_controller->GetSubscriberList(), TRUE, p_action->GetUnknown24()) != SUCCESS) {
+				delete p_header;
+			}
+		}
+	}
+
+done:
+	return result;
 }
 
 // FUNCTION: LEGO1 0x100c6d00
@@ -343,11 +452,36 @@ void MxDSBuffer::AddRef(MxDSChunk* p_chunk)
 	}
 }
 
-// STUB: LEGO1 0x100c6ef0
+// FUNCTION: LEGO1 0x100c6ef0
 MxResult MxDSBuffer::CalcBytesRemaining(MxU8* p_data)
 {
-	// TODO
+	MxResult result = FAILURE;
-	return FAILURE;
+
+	if (m_mode == MxDSBufferType_Allocate && m_bytesRemaining != 0) {
+		MxU32 bytesRead;
+		MxU8* ptr;
+
+		if (m_writeOffset == m_bytesRemaining) {
+			bytesRead = *(MxU32*) (p_data + 4) + 8;
+			ptr = p_data;
+		}
+		else {
+			ptr = &p_data[MxStreamChunk::ReturnE() + 8];
+			bytesRead = (*(MxU32*) (p_data + 4)) - MxStreamChunk::ReturnE();
+		}
+
+		if (bytesRead <= m_bytesRemaining) {
+			memcpy(m_pBuffer + m_writeOffset - m_bytesRemaining, ptr, bytesRead);
+
+			if (m_writeOffset == m_bytesRemaining)
+				*(MxU32*) (m_pBuffer + 4) = *MxStreamChunk::IntoPlus0x12(m_pBuffer) + MxStreamChunk::ReturnE();
+
+			m_bytesRemaining -= bytesRead;
+			result = SUCCESS;
+		}
+	}
+
+	return result;
 }
 
 // FUNCTION: LEGO1 0x100c6f80

LEGO1/mxdschunk.cpp

@@ -19,3 +19,9 @@ MxDSChunk::~MxDSChunk()
 		delete[] m_data;
 	}
 }
+
+// FUNCTION: LEGO1 0x100be1e0
+MxU32 MxDSChunk::ReturnE()
+{
+	return 0xe;
+}

LEGO1/mxdschunk.h

@@ -13,6 +13,8 @@ class MxDSChunk : public MxCore {
 		Flag_Bit1 = 0x01,
 		Flag_Bit2 = 0x02,
 		Flag_Bit3 = 0x04,
+		Flag_Bit4 = 0x08,
+		Flag_Bit5 = 0x10,
 		Flag_Bit8 = 0x80,
 		Flag_Bit16 = 0x8000
 	};
@@ -33,6 +35,8 @@ class MxDSChunk : public MxCore {
 		return !strcmp(p_name, MxDSChunk::ClassName()) || MxCore::IsA(p_name);
 	}
 
+	static MxU32 ReturnE();
+
 	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; }

LEGO1/mxdsstreamingaction.h

@@ -35,6 +35,7 @@ class MxDSStreamingAction : public MxDSAction {
 	inline MxS32 GetUnknown9c() { return m_unk0x9c; }
 	inline MxDSBuffer* GetUnknowna0() { return m_unk0xa0; }
 	inline MxDSBuffer* GetUnknowna4() { return m_unk0xa4; }
+	inline MxLong GetUnknowna8() { return m_unk0xa8; }
 	inline MxDSAction* GetInternalAction() { return m_internalAction; }
 	inline MxU32 GetBufferOffset() { return m_bufferOffset; }
 	inline void SetUnknown94(MxU32 p_unk0x94) { m_unk0x94 = p_unk0x94; }

LEGO1/mxdssubscriber.cpp

@@ -17,7 +17,7 @@ MxDSSubscriber::MxDSSubscriber()
 MxDSSubscriber::~MxDSSubscriber()
 {
 	if (m_controller)
-		m_controller->FUN_100c1620(this);
+		m_controller->RemoveSubscriber(this);
 
 	DeleteChunks();
 
@@ -48,7 +48,7 @@ MxResult MxDSSubscriber::Create(MxStreamController* p_controller, MxU32 p_object
 	if (!m_unk0x3c)
 		return FAILURE;
 
-	m_controller->FUN_100c15d0(this);
+	m_controller->AddSubscriber(this);
 	return SUCCESS;
 }
 

LEGO1/mxstreamchunk.cpp

@@ -2,6 +2,7 @@
 
 #include "legoutil.h"
 #include "mxdsbuffer.h"
+#include "mxstreamlist.h"
 
 // FUNCTION: LEGO1 0x100c2fe0
 MxStreamChunk::~MxStreamChunk()
@@ -48,8 +49,51 @@ MxU32 MxStreamChunk::ReadChunkHeader(MxU8* p_chunkData)
 	return headersize;
 }
 
+// FUNCTION: LEGO1 0x100c30e0
+MxResult MxStreamChunk::SendChunk(MxStreamListMxDSSubscriber& p_subscriberList, MxBool p_append, MxS16 p_obj24val)
+{
+	for (MxStreamListMxDSSubscriber::iterator it = p_subscriberList.begin(); it != p_subscriberList.end(); it++) {
+		if ((*it)->GetObjectId() == m_objectId && (*it)->GetUnknown48() == p_obj24val) {
+			if (m_flags & MxDSChunk::Flag_Bit2 && m_buffer) {
+				m_buffer->ReleaseRef(this);
+				m_buffer = NULL;
+			}
+
+			(*it)->AddChunk(this, p_append);
+
+			return SUCCESS;
+		}
+	}
+
+	return FAILURE;
+}
+
 // FUNCTION: LEGO1 0x100c3170
 void MxStreamChunk::SetBuffer(MxDSBuffer* p_buffer)
 {
 	m_buffer = p_buffer;
 }
+
+// FUNCTION: LEGO1 0x100c3180
+MxU16* MxStreamChunk::IntoFlags(MxU8* p_buffer)
+{
+	return (MxU16*) (p_buffer + 8);
+}
+
+// FUNCTION: LEGO1 0x100c3190
+MxU32* MxStreamChunk::IntoPlus0xa(MxU8* p_buffer)
+{
+	return (MxU32*) (p_buffer + 0xa);
+}
+
+// FUNCTION: LEGO1 0x100c31a0
+MxU32* MxStreamChunk::IntoPlus0xe(MxU8* p_buffer)
+{
+	return (MxU32*) (p_buffer + 0xe);
+}
+
+// FUNCTION: LEGO1 0x100c31b0
+MxU32* MxStreamChunk::IntoPlus0x12(MxU8* p_buffer)
+{
+	return (MxU32*) (p_buffer + 0x12);
+}

LEGO1/mxstreamchunk.h

@@ -2,8 +2,10 @@
 #define MXSTREAMCHUNK_H
 
 #include "mxdschunk.h"
+#include "mxdsobject.h"
 
 class MxDSBuffer;
+class MxStreamListMxDSSubscriber;
 
 // VTABLE: LEGO1 0x100dc2a8
 // SIZE 0x20
@@ -29,8 +31,14 @@ class MxStreamChunk : public MxDSChunk {
 
 	MxResult ReadChunk(MxDSBuffer* p_buffer, MxU8* p_chunkData);
 	MxU32 ReadChunkHeader(MxU8* p_chunkData);
+	MxResult SendChunk(MxStreamListMxDSSubscriber& p_subscriberList, MxBool p_append, MxS16 p_obj24val);
 	void SetBuffer(MxDSBuffer* p_buffer);
 
+	static MxU16* IntoFlags(MxU8* p_buffer);
+	static MxU32* IntoPlus0x12(MxU8* p_buffer);
+	static MxU32* IntoPlus0xa(MxU8* p_buffer);
+	static MxU32* IntoPlus0xe(MxU8* p_buffer);
+
 private:
 	MxDSBuffer* m_buffer; // 0x1c
 };

LEGO1/mxstreamcontroller.cpp

@@ -78,16 +78,16 @@ MxResult MxStreamController::Open(const char* p_filename)
 	return SUCCESS;
 }
 
-// STUB: LEGO1 0x100c15d0
+// FUNCTION: LEGO1 0x100c15d0
-void MxStreamController::FUN_100c15d0(MxDSSubscriber* p_subscriber)
+void MxStreamController::AddSubscriber(MxDSSubscriber* p_subscriber)
 {
-	// TODO
+	m_subscriberList.push_back(p_subscriber);
 }
 
-// STUB: LEGO1 0x100c1620
+// FUNCTION: LEGO1 0x100c1620
-void MxStreamController::FUN_100c1620(MxDSSubscriber* p_subscriber)
+void MxStreamController::RemoveSubscriber(MxDSSubscriber* p_subscriber)
 {
-	// TODO
+	m_subscriberList.remove(p_subscriber);
 }
 
 // FUNCTION: LEGO1 0x100c1690
@@ -259,6 +259,12 @@ MxResult MxStreamController::FUN_100c1f00(MxDSAction* p_action)
 	return FAILURE;
 }
 
+// STUB: LEGO1 0x100c20b0
+MxNextActionDataStart* MxStreamController::FindNextActionDataStartFromStreamingAction(MxDSStreamingAction* p_action)
+{
+	return NULL;
+}
+
 // STUB: LEGO1 0x100c20d0
 MxBool MxStreamController::FUN_100c20d0(MxDSObject& p_obj)
 {

LEGO1/mxstreamcontroller.h

@@ -43,18 +43,21 @@ class MxStreamController : public MxCore {
 	virtual MxResult VTable0x2c(MxDSAction* p_action, MxU32 p_bufferval); // vtable+0x2c
 	virtual MxResult VTable0x30(MxDSAction* p_action);                    // vtable+0x30
 
-	void FUN_100c15d0(MxDSSubscriber* p_subscriber);
+	void AddSubscriber(MxDSSubscriber* p_subscriber);
-	void FUN_100c1620(MxDSSubscriber* p_subscriber);
+	void RemoveSubscriber(MxDSSubscriber* p_subscriber);
 	MxResult FUN_100c1800(MxDSAction* p_action, MxU32 p_val);
 	MxResult FUN_100c1a00(MxDSAction* p_action, MxU32 p_offset);
 	MxPresenter* FUN_100c1e70(MxDSAction& p_action);
 	MxResult FUN_100c1f00(MxDSAction* p_action);
 	MxBool FUN_100c20d0(MxDSObject& p_obj);
 	MxResult InsertActionToList54(MxDSAction* p_action);
+	MxNextActionDataStart* FindNextActionDataStartFromStreamingAction(MxDSStreamingAction* p_action);
 
 	inline MxAtomId& GetAtom() { return m_atom; };
+	inline MxStreamProvider* GetProvider() { return m_provider; };
 	inline MxStreamListMxDSAction& GetUnk0x3c() { return m_unk0x3c; };
 	inline MxStreamListMxDSAction& GetUnk0x54() { return m_unk0x54; };
+	inline MxStreamListMxDSSubscriber& GetSubscriberList() { return m_subscriberList; };
 
 protected:
 	MxCriticalSection m_criticalSection;                // 0x8