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‎.gitignore‎

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# Ionide (cross platform F# VS Code tools) working folder
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.ionide/
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Release/
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O2CSP/Release/

‎O2CSP.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.3.32819.101
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "O2CSP", "O2CSP\O2CSP.vcxproj", "{00E3EC47-314A-4868-B361-123B3EE5A175}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|x64 = Debug|x64
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Debug|x86 = Debug|x86
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Release|x64 = Release|x64
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Release|x86 = Release|x86
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{00E3EC47-314A-4868-B361-123B3EE5A175}.Debug|x64.ActiveCfg = Debug|x64
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{00E3EC47-314A-4868-B361-123B3EE5A175}.Debug|x64.Build.0 = Debug|x64
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{00E3EC47-314A-4868-B361-123B3EE5A175}.Debug|x86.ActiveCfg = Debug|Win32
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{00E3EC47-314A-4868-B361-123B3EE5A175}.Debug|x86.Build.0 = Debug|Win32
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{00E3EC47-314A-4868-B361-123B3EE5A175}.Release|x64.ActiveCfg = Release|x64
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{00E3EC47-314A-4868-B361-123B3EE5A175}.Release|x64.Build.0 = Release|x64
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{00E3EC47-314A-4868-B361-123B3EE5A175}.Release|x86.ActiveCfg = Release|Win32
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{00E3EC47-314A-4868-B361-123B3EE5A175}.Release|x86.Build.0 = Release|Win32
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {408925D0-1B99-4995-8C9C-AC1E26761329}
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EndGlobalSection
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EndGlobal

‎O2CSP/O2CSP.cpp‎

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#include "O2CSP.h"
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#include "framework.h"
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#include <iostream>
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#include "mem.h"
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#include "winver.h"
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// TODO: Everything should be done using RAII approach, Initialize-Finalize is C style and is not recommended.
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float* f_scale = (float*)0x5EED34;
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void ImulEDXHook()
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{
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int valueEDX = 0;
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__asm {
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MOV valueEDX,EDX
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PUSH EAX
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};
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float f_result = *f_scale * valueEDX;
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int i_result = static_cast<int>(f_result);
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__asm {
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MOV EDX,i_result
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POP EAX
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};
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return;
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/**std::cout <<
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"Multiplier: " << *f_scale << "\n"
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"EDX: " << valueEDX << "\n"
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"Float result: " << f_result << "\n"
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"Int result: " << i_result << std::endl;**/
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}
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void ImulECXHook()
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{
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int valueECX = 0;
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__asm {
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MOV valueECX, ECX
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PUSH EAX
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};
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float f_result = *f_scale * valueECX;
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int i_result = static_cast<int>(f_result);
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__asm {
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MOV ECX, i_result
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POP EAX
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};
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return;
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/**std::cout <<
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"Multiplier: " << *f_scale << "\n"
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"ECX: " << valueECX << "\n"
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"Float result: " << f_result << "\n"
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"Int result: " << i_result << std::endl;**/
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}
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void ImulEBPHook()
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{
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int valueEBP = 0;
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__asm {
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PUSH EAX
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PUSH ECX
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MOV ECX,[EBP]
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MOV valueEBP,ECX
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};
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float f_result = *f_scale * valueEBP;
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int i_result = static_cast<int>(f_result);
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__asm {
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MOV ECX, i_result
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MOV [EBP],ECX
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POP ECX
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POP EAX
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SUB EAX,[EBP]
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};
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return;
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/**std::cout <<
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"Multiplier: " << *f_scale << "\n"
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"EDX: " << valueEDX << "\n"
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"Float result: " << f_result << "\n"
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"Int result: " << i_result << std::endl;**/
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}
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void ImulEBPHook2()
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{
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int valueEBP = 0;
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__asm {
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PUSH EAX
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PUSH ECX
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MOV ECX, [EBP]
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MOV valueEBP, ECX
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};
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float f_result = *f_scale * valueEBP;
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int i_result = static_cast<int>(f_result);
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__asm {
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MOV ECX, i_result
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MOV[EBP], ECX
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POP ECX
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POP EAX
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SUB ECX, [EBP]
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};
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return;
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/**std::cout <<
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"Multiplier: " << *f_scale << "\n"
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"EDX: " << valueEDX << "\n"
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"Float result: " << f_result << "\n"
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"Int result: " << i_result << std::endl;**/
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}
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uintptr_t moduleBase;
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void ModifyScaleToFloat()
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{
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DWORD curProtection = 0;
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BOOL hResult = VirtualProtect((void*)(moduleBase + 0x07F6B0), 5, PAGE_EXECUTE_READWRITE, &curProtection);
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if (hResult == NULL)
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{
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std::cout << "couldn't set permission on overwrite destination" << std::endl;
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}
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char data[5] = { 0xD9, 0x5E, 0x10, 0xEB, 0x25 };
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char* segmentForReplace = (char*)(moduleBase + 0x07F6B0);
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for (int i = 0; i < 5; i++)
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{
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*segmentForReplace = data[i];
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segmentForReplace++;
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}
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DWORD temp = 0;
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hResult = VirtualProtect((void*)(moduleBase + 0x07F6B0), 5, curProtection, &temp);
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if (hResult == NULL)
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{
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// TODO: Throw an error.
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// https://docs.microsoft.com/en-us/windows/win32/api/memoryapi/nf-memoryapi-virtualprotect#return-value
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}
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hResult = VirtualProtect((void*)(moduleBase + 0x07E8E7), 1, PAGE_EXECUTE_READWRITE, &curProtection);
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char FMUL = 0xD8;
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segmentForReplace = (char*)(moduleBase + 0x07E8E7);
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*segmentForReplace = FMUL;
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hResult = VirtualProtect((void*)(moduleBase + 0x07E8E7), 1, curProtection, &temp);
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if (hResult == NULL)
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{
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// TODO: Throw an error.
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// https://docs.microsoft.com/en-us/windows/win32/api/memoryapi/nf-memoryapi-virtualprotect#return-value
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}
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}
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void O2CSP::Hook()
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{
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unsigned int g_win10Offset = 0;
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// TODO: check for errors.
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// https://docs.microsoft.com/en-us/windows/win32/api/libloaderapi/nf-libloaderapi-getmodulehandlea#return-value
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if ((moduleBase = (uintptr_t)GetModuleHandle("OTwo.exe")) == 0)
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{
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std::cout << "No OTwo.exe process found" << std::endl;
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return;
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}
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double g_winver = getSysOpType();
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//g_winver = 10;
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if (g_winver >= 10)
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{
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f_scale = (float*)(0x5EED34 + g_win10Offset);
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}
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std::cout << "winver: " << g_winver << '\n';
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std::cout << "win10Offset: " << g_win10Offset << std::endl;
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ModifyScaleToFloat();
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mem::Detour32((void*)(moduleBase + 0x07E844), (void*)&ImulEDXHook, 7); // Apply scale for measure line position/speed
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mem::Detour32((void*)(moduleBase + 0x07E32B), (void*)&ImulECXHook, 7); // Apply scale for rice notes position/speed
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mem::Detour32((void*)(moduleBase + 0x07E428), (void*)&ImulEDXHook, 7); // Apply scale for long note head position/speed
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mem::Detour32((void*)(moduleBase + 0x07E45A), (void*)&ImulECXHook, 7); // Apply scale for long note tail position/speed
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mem::Detour32((void*)(moduleBase + 0x07E3A9), (void*)&ImulEBPHook, 5); // Apply scale for long note body start position/speed
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mem::Detour32((void*)(moduleBase + 0x07E3C0), (void*)&ImulEBPHook2, 5); // Apply scale for long note body end position/speed
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}

‎O2CSP/O2CSP.h‎

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#pragma once
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namespace O2CSP
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{
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void Hook();
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}

‎O2CSP/O2CSP.vcxproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ItemGroup Label="ProjectConfigurations">
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<ProjectConfiguration Include="Debug|Win32">
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<Configuration>Debug</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Release|Win32">
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<Configuration>Release</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Debug|x64">
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<Configuration>Debug</Configuration>
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<Platform>x64</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Release|x64">
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<Configuration>Release</Configuration>
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<Platform>x64</Platform>
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</ProjectConfiguration>
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</ItemGroup>
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<PropertyGroup Label="Globals">
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<VCProjectVersion>16.0</VCProjectVersion>
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<Keyword>Win32Proj</Keyword>
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<ProjectGuid>{00e3ec47-314a-4868-b361-123b3ee5a175}</ProjectGuid>
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<RootNamespace>O2CSP</RootNamespace>
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<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
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<ConfigurationType>DynamicLibrary</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<CharacterSet>MultiByte</CharacterSet>
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<PreferredToolArchitecture>x86</PreferredToolArchitecture>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
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<ConfigurationType>DynamicLibrary</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<WholeProgramOptimization>true</WholeProgramOptimization>
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<CharacterSet>MultiByte</CharacterSet>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
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<ConfigurationType>DynamicLibrary</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<CharacterSet>MultiByte</CharacterSet>
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<PreferredToolArchitecture>x86</PreferredToolArchitecture>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
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<ConfigurationType>DynamicLibrary</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<WholeProgramOptimization>true</WholeProgramOptimization>
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<CharacterSet>MultiByte</CharacterSet>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
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<ImportGroup Label="ExtensionSettings">
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</ImportGroup>
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<ImportGroup Label="Shared">
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<PropertyGroup Label="UserMacros" />
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>WIN32;_DEBUG;O2CSP_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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<PrecompiledHeader>NotUsing</PrecompiledHeader>
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<PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
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</ClCompile>
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<Link>
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<SubSystem>Windows</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<EnableUAC>false</EnableUAC>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<FunctionLevelLinking>true</FunctionLevelLinking>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>WIN32;NDEBUG;O2CSP_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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<PrecompiledHeader>NotUsing</PrecompiledHeader>
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<PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
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</ClCompile>
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<Link>
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<SubSystem>Windows</SubSystem>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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<OptimizeReferences>true</OptimizeReferences>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<EnableUAC>false</EnableUAC>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>_DEBUG;O2CSP_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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<PrecompiledHeader>NotUsing</PrecompiledHeader>
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<PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
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</ClCompile>
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<Link>
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<SubSystem>Windows</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<EnableUAC>false</EnableUAC>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<FunctionLevelLinking>true</FunctionLevelLinking>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>NDEBUG;O2CSP_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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<PrecompiledHeader>NotUsing</PrecompiledHeader>
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<PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
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</ClCompile>
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<Link>
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<SubSystem>Windows</SubSystem>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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<OptimizeReferences>true</OptimizeReferences>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<EnableUAC>false</EnableUAC>
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</Link>
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</ItemDefinitionGroup>
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<ItemGroup>
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<ClInclude Include="framework.h" />
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<ClInclude Include="O2CSP.h" />
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<ClInclude Include="mem.h" />
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<ClInclude Include="winver.h" />
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</ItemGroup>
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<ItemGroup>
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<ClCompile Include="dllmain.cpp" />
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<ClCompile Include="O2CSP.cpp" />
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<ClCompile Include="mem.cpp" />
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</ItemGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
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<ImportGroup Label="ExtensionTargets">
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</ImportGroup>
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</Project>

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