74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
/*
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* ContainerUMX.cpp
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* ----------------
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* Purpose: UMX (Unreal Music) module ripper
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* Notes : Obviously, this code only rips modules from older Unreal Engine games, such as Unreal 1, Unreal Tournament 1 and Deus Ex.
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* Authors: OpenMPT Devs (inspired by code from http://wiki.beyondunreal.com/Legacy:Package_File_Format)
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#include "stdafx.h"
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#include "Loaders.h"
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#include "UMXTools.h"
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#include "Container.h"
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#include "Sndfile.h"
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OPENMPT_NAMESPACE_BEGIN
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CSoundFile::ProbeResult CSoundFile::ProbeFileHeaderUMX(MemoryFileReader file, const uint64 *pfilesize)
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{
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return UMX::ProbeFileHeader(file, pfilesize, "music");
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}
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bool UnpackUMX(std::vector<ContainerItem> &containerItems, FileReader &file, ContainerLoadingFlags loadFlags)
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{
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file.Rewind();
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containerItems.clear();
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UMX::FileHeader fileHeader;
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if(!file.ReadStruct(fileHeader) || !fileHeader.IsValid())
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return false;
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// Note that this can be a false positive, e.g. Unreal maps will have music and sound
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// in their name table because they usually import such files. However, it spares us
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// from wildly seeking through the file, as the name table is usually right at the
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// start of the file, so it is hopefully a good enough heuristic for our purposes.
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if(!UMX::FindNameTableEntry(file, fileHeader, "music"))
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return false;
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else if(!file.CanRead(fileHeader.GetMinimumAdditionalFileSize()))
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return false;
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else if(loadFlags == ContainerOnlyVerifyHeader)
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return true;
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const std::vector<std::string> names = UMX::ReadNameTable(file, fileHeader);
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const std::vector<int32> classes = UMX::ReadImportTable(file, fileHeader, names);
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// Read export table
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file.Seek(fileHeader.exportOffset);
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for(uint32 i = 0; i < fileHeader.exportCount && file.CanRead(8); i++)
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{
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auto [fileChunk, objName] = UMX::ReadExportTableEntry(file, fileHeader, classes, names, "music");
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if(!fileChunk.IsValid())
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continue;
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ContainerItem item;
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if(objName >= 0 && static_cast<std::size_t>(objName) < names.size())
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{
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item.name = mpt::ToUnicode(mpt::Charset::Windows1252, names[objName]);
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}
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item.file = fileChunk;
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containerItems.push_back(std::move(item));
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}
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return !containerItems.empty();
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}
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OPENMPT_NAMESPACE_END
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