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more MxDSBuffer functions (#255)
* FUN_100c6f80 * AllocateBuffer * Update mxdsbuffer.h * Update mxdsbuffer.cpp * Update mxdsbuffer.cpp * Return reference * Fix delete call * Fix GetWriteOffset * Remove cast --------- Co-authored-by: Christian Semmler <mail@csemmler.com>
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Misha
GitHub
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f3b0de0609
5 changed files with 121 additions and 16 deletions
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@ -1,5 +1,8 @@
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#include "mxdsbuffer.h"
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#include "mxomni.h"
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#include "mxstreamer.h"
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DECOMP_SIZE_ASSERT(MxDSBuffer, 0x34);
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// OFFSET: LEGO1 0x100c6470
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@ -14,24 +17,112 @@ MxDSBuffer::MxDSBuffer()
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m_unk1c = 0;
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m_writeOffset = 0;
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m_bytesRemaining = 0;
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m_mode = 2;
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m_mode = MxDSBufferType_Preallocated;
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m_unk30 = 0;
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}
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// OFFSET: LEGO1 0x100c6530
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MxDSBuffer::~MxDSBuffer()
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{
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// TODO
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if (m_pBuffer != NULL) {
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if (m_mode == MxDSBufferType_Chunk) {
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// TODO
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}
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else if (m_mode == MxDSBufferType_Allocate || m_mode == MxDSBufferType_Unknown) {
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delete[] m_pBuffer;
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}
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}
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m_unk14 = 0;
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m_unk1c = 0;
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}
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// OFFSET: LEGO1 0x100c6640
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MxResult MxDSBuffer::AllocateBuffer(MxU32 p_bufferSize, MxDSBufferType p_mode)
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{
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MxResult result = FAILURE;
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MxU32 i = 0;
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if (p_mode == MxDSBufferType_Allocate) {
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m_pBuffer = new MxU8[p_bufferSize];
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}
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else if (p_mode == MxDSBufferType_Chunk) {
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MxStreamer* streamer = Streamer();
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// I have no clue as to what this does, or even if its correct. Maybe it's related to storing chunks in
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// MxRamStreamController?
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if (p_bufferSize >> 10 == 0x40) {
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i = 0;
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while (i < 22) {
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if ((*(MxU32*) ((streamer->GetSubclass1().GetUnk08() + ((i & 0xffffffe7) >> 3)) & 1 << ((MxU8) i & 0x1f)
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)) == 0) {
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MxU32* ptr = (MxU32*) ((streamer->GetSubclass1().GetUnk08() + ((i & 0xffffffe7) >> 3)) &
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1 << ((MxU8) i & 0x1f));
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// mark it as used?
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*ptr = *ptr ^ 1 << (i & 0x1f);
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m_pBuffer =
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(MxU8*) (streamer->GetSubclass1().GetSize() * i * 0x400 + streamer->GetSubclass1().GetBuffer());
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break;
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}
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i++;
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}
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m_pBuffer = NULL;
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}
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else if (p_bufferSize >> 10 == 0x80) {
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i = 0;
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// Same thing as above but it uses subclass2
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while (i < 22) {
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if ((*(MxU32*) ((streamer->GetSubclass2().GetUnk08() + ((i & 0xffffffe7) >> 3)) & 1 << ((MxU8) i & 0x1f)
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)) == 0) {
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MxU32* ptr = (MxU32*) ((streamer->GetSubclass2().GetUnk08() + ((i & 0xffffffe7) >> 3)) &
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1 << ((MxU8) i & 0x1f));
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// mark it as used?
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*ptr = *ptr ^ 1 << (i & 0x1f);
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m_pBuffer =
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(MxU8*) (streamer->GetSubclass2().GetSize() * i * 0x400 + streamer->GetSubclass2().GetBuffer());
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break;
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}
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i++;
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}
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m_pBuffer = NULL;
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}
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else {
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m_pIntoBuffer = NULL;
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}
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}
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m_pIntoBuffer = m_pBuffer;
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m_pIntoBuffer2 = m_pBuffer;
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if (m_pBuffer != NULL) {
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m_mode = p_mode;
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m_bytesRemaining = p_bufferSize;
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m_writeOffset = p_bufferSize;
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result = SUCCESS;
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}
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return result;
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}
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// OFFSET: LEGO1 0x100c6780
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MxResult MxDSBuffer::FUN_100c6780(void* p_buffer, MxU32 p_size)
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MxResult MxDSBuffer::SetBufferPointer(MxU32* p_buffer, MxU32 p_size)
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{
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m_pBuffer = p_buffer;
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m_pIntoBuffer = p_buffer;
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m_pIntoBuffer2 = p_buffer;
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m_pBuffer = (MxU8*) p_buffer;
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m_pIntoBuffer = (MxU8*) p_buffer;
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m_pIntoBuffer2 = (MxU8*) p_buffer;
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m_bytesRemaining = p_size;
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m_writeOffset = p_size;
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m_mode = 2;
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m_mode = MxDSBufferType_Preallocated;
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return SUCCESS;
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}
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// OFFSET: LEGO1 0x100c6f80
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void MxDSBuffer::FUN_100c6f80(MxU32 p_unk)
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{
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if (p_unk < m_writeOffset) {
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m_pIntoBuffer2 = m_pBuffer + p_unk;
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m_pIntoBuffer = m_pBuffer + p_unk;
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}
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}
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@ -4,6 +4,13 @@
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#include "decomp.h"
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#include "mxcore.h"
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enum MxDSBufferType {
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MxDSBufferType_Chunk = 0,
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MxDSBufferType_Allocate = 1,
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MxDSBufferType_Preallocated = 2,
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MxDSBufferType_Unknown = 3,
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};
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// VTABLE 0x100dcca0
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// SIZE 0x34
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class MxDSBuffer : public MxCore {
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@ -18,20 +25,22 @@ class MxDSBuffer : public MxCore {
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return "MxDSBuffer";
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}
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MxResult FUN_100c6780(void* p_buffer, MxU32 p_size);
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MxResult AllocateBuffer(MxU32 p_bufferSize, MxDSBufferType p_mode);
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MxResult SetBufferPointer(MxU32* p_buffer, MxU32 p_size);
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void FUN_100c6f80(MxU32 p_unk);
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inline void* GetBuffer() { return m_pBuffer; }
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inline MxU8* GetBuffer() { return m_pBuffer; }
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inline MxU32 GetWriteOffset() { return m_writeOffset; }
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private:
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void* m_pBuffer;
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void* m_pIntoBuffer;
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void* m_pIntoBuffer2;
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MxU8* m_pBuffer;
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MxU8* m_pIntoBuffer;
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MxU8* m_pIntoBuffer2;
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undefined4 m_unk14;
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undefined4 m_unk18;
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undefined4 m_unk1c;
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undefined2 m_unk20;
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undefined4 m_mode;
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MxDSBufferType m_mode;
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MxU32 m_writeOffset;
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MxU32 m_bytesRemaining;
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undefined4 m_unk30;
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@ -5,7 +5,7 @@
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// OFFSET: LEGO1 0x100bffd0
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void MxDSSource::ReadToBuffer(MxDSBuffer* p_buffer)
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{
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Read((unsigned char*) p_buffer->GetBuffer(), p_buffer->GetWriteOffset());
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Read(p_buffer->GetBuffer(), p_buffer->GetWriteOffset());
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}
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// OFFSET: LEGO1 0x100bfff0
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@ -29,7 +29,7 @@ MxResult MxRAMStreamController::Open(const char* p_filename)
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((MxRAMStreamProvider*) m_provider)->GetBufferOfFileSize(),
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((MxRAMStreamProvider*) m_provider)->GetFileSize()
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);
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m_buffer.FUN_100c6780(
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m_buffer.SetBufferPointer(
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((MxRAMStreamProvider*) m_provider)->GetBufferOfFileSize(),
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((MxRAMStreamProvider*) m_provider)->GetFileSize()
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);
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@ -18,9 +18,11 @@ class MxStreamerSubClass1 {
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~MxStreamerSubClass1() { delete[] m_buffer; }
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undefined4 GetSize() { return m_size; }
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undefined4 GetSize() const { return m_size; }
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void SetBuffer(undefined* p_buf) { m_buffer = p_buf; }
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inline undefined* GetBuffer() const { return m_buffer; }
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inline undefined4 GetUnk08() const { return m_unk08; }
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private:
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undefined* m_buffer;
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@ -93,6 +95,9 @@ class MxStreamer : public MxCore {
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MxResult AddStreamControllerToOpenList(MxStreamController* p_stream);
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MxResult FUN_100b99b0(MxDSAction* p_action);
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inline const MxStreamerSubClass2& GetSubclass1() { return m_subclass1; }
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inline const MxStreamerSubClass3& GetSubclass2() { return m_subclass2; }
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private:
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list<MxStreamController*> m_openStreams; // 0x8
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MxStreamerSubClass2 m_subclass1; // 0x14
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