mirror of https://github.com/AxioDL/metaforce.git
136 lines
3.5 KiB
C++
136 lines
3.5 KiB
C++
#include <zlib.h>
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#include <lzo/lzo1x.h>
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#include "DNAMP1.hpp"
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#include "PAK.hpp"
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namespace Retro
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{
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namespace DNAMP1
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{
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void PAK::read(Athena::io::IStreamReader& reader)
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{
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atUint32 version = reader.readUint32Big();
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if (version != 0x00030005)
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Log.report(LogVisor::FatalError, "unexpected PAK magic");
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reader.readUint32Big();
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atUint32 nameCount = reader.readUint32Big();
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m_nameEntries.clear();
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m_nameEntries.reserve(nameCount);
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for (atUint32 n=0 ; n<nameCount ; ++n)
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{
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m_nameEntries.emplace_back();
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m_nameEntries.back().read(reader);
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}
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atUint32 count = reader.readUint32Big();
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m_entries.clear();
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m_entries.reserve(count);
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m_idMap.clear();
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m_idMap.reserve(count);
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for (atUint32 e=0 ; e<count ; ++e)
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{
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m_entries.emplace_back();
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Entry& ent = m_entries.back();
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ent.read(reader);
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if (ent.compressed && m_useLzo)
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ent.compressed = 2;
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}
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for (Entry& entry : m_entries)
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m_idMap[entry.id] = &entry;
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m_nameMap.clear();
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m_nameMap.reserve(nameCount);
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for (NameEntry& entry : m_nameEntries)
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{
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std::unordered_map<UniqueID32, Entry*>::iterator found = m_idMap.find(entry.id);
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if (found != m_idMap.end())
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m_nameMap[entry.name] = found->second;
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}
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}
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void PAK::write(Athena::io::IStreamWriter& writer) const
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{
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writer.writeUint32Big(0x00030005);
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writer.writeUint32Big(0);
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writer.writeUint32Big((atUint32)m_nameEntries.size());
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for (const NameEntry& entry : m_nameEntries)
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{
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((NameEntry&)entry).nameLen = entry.name.size();
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entry.write(writer);
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}
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writer.writeUint32Big(m_entries.size());
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for (const Entry& entry : m_entries)
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{
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Entry tmp = entry;
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if (tmp.compressed)
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tmp.compressed = 1;
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tmp.write(writer);
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}
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}
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std::unique_ptr<atUint8[]>
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PAK::Entry::getBuffer(const NOD::Node& pak, atUint64& szOut) const
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{
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if (compressed)
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{
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std::unique_ptr<NOD::IPartReadStream> strm = pak.beginReadStream(offset);
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atUint32 decompSz;
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strm->read(&decompSz, 4);
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decompSz = HECL::SBig(decompSz);
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atUint8* buf = new atUint8[decompSz];
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atUint8* bufCur = buf;
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atUint8 compBuf[0x8000];
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if (compressed == 1)
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{
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atUint32 compRem = size - 4;
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z_stream zs = {};
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inflateInit(&zs);
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zs.avail_out = decompSz;
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zs.next_out = buf;
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while (zs.avail_out)
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{
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atUint64 readSz = strm->read(compBuf, std::min(compRem, atUint32(0x8000)));
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compRem -= readSz;
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zs.avail_in = readSz;
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zs.next_in = compBuf;
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inflate(&zs, Z_FINISH);
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}
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inflateEnd(&zs);
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}
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else
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{
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atUint32 rem = decompSz;
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while (rem)
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{
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atUint16 chunkSz;
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strm->read(&chunkSz, 2);
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chunkSz = HECL::SBig(chunkSz);
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strm->read(compBuf, chunkSz);
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lzo_uint dsz = rem;
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lzo1x_decompress(compBuf, chunkSz, bufCur, &dsz, nullptr);
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bufCur += dsz;
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rem -= dsz;
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}
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}
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szOut = decompSz;
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return std::unique_ptr<atUint8[]>(buf);
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}
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else
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{
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atUint8* buf = new atUint8[size];
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pak.beginReadStream(offset)->read(buf, size);
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szOut = size;
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return std::unique_ptr<atUint8[]>(buf);
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}
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}
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}
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}
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