isle/LEGO1/mxdsbuffer.cpp
Christian Semmler 494a556f8e
(Proposal) Adjustments to "decomp" language (#308)
* Adjustments to "decomp" language

* Fix a comment

* Fix accidental clang-formatting

* Fix order

* Fix order

* Remove junk

* Fix OFFSET

* Adjustments based on new suggestions

* Annotate globals

* Globals in ISLE

* More globals

* Merge from parser2 branch

* Allow prepending space for exact marker match

* To eliminate noise, require the 0x prefix on offset for marker match

* fix test from previous

* Count tab stops for indented functions to reduce MISSED_END_OF_FUNCTION noise

* FUNCTION to SYNTHETIC where needed

* Missed marker conversion on SetAtomId

* pylint cleanup, remove unused code

* Fix unexpected function end, add more unit tests

* Be more strict about synthetic name syntax

* Revert "Missed marker conversion on SetAtomId"

This reverts commit d87d665127.

* Revert "FUNCTION to SYNTHETIC where needed"

This reverts commit 8c815418d2.

* Implicit lookup by name for functions

* Fix VTABLE SYNTHETIC and other decomp markers

* Get vtable class name

* Vtable marker should identify struct

* No colon for SIZE comment

* Update README.md

* Update README.md

* Update CONTRIBUTING.md

* Update README.md

* Update README.md

* Update CONTRIBUTING.md

* Update README.md

* Update CONTRIBUTING.md

* Fix destructor/annotation

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

---------

Co-authored-by: disinvite <disinvite@users.noreply.github.com>
2023-12-06 13:10:45 +01:00

128 lines
3 KiB
C++

#include "mxdsbuffer.h"
#include "mxomni.h"
#include "mxstreamer.h"
DECOMP_SIZE_ASSERT(MxDSBuffer, 0x34);
// FUNCTION: LEGO1 0x100c6470
MxDSBuffer::MxDSBuffer()
{
m_unk20 = 0;
m_pBuffer = NULL;
m_pIntoBuffer = NULL;
m_pIntoBuffer2 = NULL;
m_unk14 = 0;
m_unk18 = 0;
m_unk1c = 0;
m_writeOffset = 0;
m_bytesRemaining = 0;
m_mode = MxDSBufferType_Preallocated;
m_unk30 = 0;
}
// FUNCTION: LEGO1 0x100c6530
MxDSBuffer::~MxDSBuffer()
{
if (m_pBuffer != NULL) {
if (m_mode == MxDSBufferType_Chunk) {
// TODO
}
else if (m_mode == MxDSBufferType_Allocate || m_mode == MxDSBufferType_Unknown) {
delete[] m_pBuffer;
}
}
m_unk14 = 0;
m_unk1c = 0;
}
// FUNCTION: LEGO1 0x100c6640
MxResult MxDSBuffer::AllocateBuffer(MxU32 p_bufferSize, MxDSBufferType p_mode)
{
MxResult result = FAILURE;
MxU32 i = 0;
if (p_mode == MxDSBufferType_Allocate) {
m_pBuffer = new MxU8[p_bufferSize];
}
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?
if (p_bufferSize >> 10 == 0x40) {
i = 0;
while (i < 22) {
if ((*(MxU32*) ((streamer->GetSubclass1().GetUnk08() + ((i & 0xffffffe7) >> 3)) & 1 << ((MxU8) i & 0x1f)
)) == 0) {
MxU32* ptr = (MxU32*) ((streamer->GetSubclass1().GetUnk08() + ((i & 0xffffffe7) >> 3)) &
1 << ((MxU8) i & 0x1f));
// mark it as used?
*ptr = *ptr ^ 1 << (i & 0x1f);
m_pBuffer =
(MxU8*) (streamer->GetSubclass1().GetSize() * i * 0x400 + streamer->GetSubclass1().GetBuffer());
break;
}
i++;
}
m_pBuffer = NULL;
}
else if (p_bufferSize >> 10 == 0x80) {
i = 0;
// Same thing as above but it uses subclass2
while (i < 22) {
if ((*(MxU32*) ((streamer->GetSubclass2().GetUnk08() + ((i & 0xffffffe7) >> 3)) & 1 << ((MxU8) i & 0x1f)
)) == 0) {
MxU32* ptr = (MxU32*) ((streamer->GetSubclass2().GetUnk08() + ((i & 0xffffffe7) >> 3)) &
1 << ((MxU8) i & 0x1f));
// mark it as used?
*ptr = *ptr ^ 1 << (i & 0x1f);
m_pBuffer =
(MxU8*) (streamer->GetSubclass2().GetSize() * i * 0x400 + streamer->GetSubclass2().GetBuffer());
break;
}
i++;
}
m_pBuffer = NULL;
}
else {
m_pIntoBuffer = NULL;
}
}
m_pIntoBuffer = m_pBuffer;
m_pIntoBuffer2 = m_pBuffer;
if (m_pBuffer != NULL) {
m_mode = p_mode;
m_bytesRemaining = p_bufferSize;
m_writeOffset = p_bufferSize;
result = SUCCESS;
}
return result;
}
// FUNCTION: LEGO1 0x100c6780
MxResult MxDSBuffer::SetBufferPointer(MxU32* p_buffer, MxU32 p_size)
{
m_pBuffer = (MxU8*) p_buffer;
m_pIntoBuffer = (MxU8*) p_buffer;
m_pIntoBuffer2 = (MxU8*) p_buffer;
m_bytesRemaining = p_size;
m_writeOffset = p_size;
m_mode = MxDSBufferType_Preallocated;
return SUCCESS;
}
// FUNCTION: LEGO1 0x100c6f80
void MxDSBuffer::FUN_100c6f80(MxU32 p_unk)
{
if (p_unk < m_writeOffset) {
m_pIntoBuffer2 = m_pBuffer + p_unk;
m_pIntoBuffer = m_pBuffer + p_unk;
}
}