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f3b0de0609
* 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>
128 lines
3 KiB
C++
128 lines
3 KiB
C++
#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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MxDSBuffer::MxDSBuffer()
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{
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m_unk20 = 0;
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m_pBuffer = NULL;
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m_pIntoBuffer = NULL;
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m_pIntoBuffer2 = NULL;
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m_unk14 = 0;
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m_unk18 = 0;
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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 = 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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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::SetBufferPointer(MxU32* p_buffer, MxU32 p_size)
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{
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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 = 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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