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Fully working PAK/MLVL/STRG reads

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This commit is contained in:
Jack Andersen
2015-07-13 14:38:48 -10:00
parent 7876d4c209
commit 31f77497fd
13 changed files with 297 additions and 51 deletions
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65
DataSpec/DNAMP1/PAK.cpp
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@@ -1,3 +1,5 @@
#include <zlib.h>
#include <lzo/lzo1x.h>
#include "PAK.hpp"
namespace Retro
@@ -63,5 +65,68 @@ void PAK::write(Athena::io::IStreamWriter& writer) const
entry.write(writer);
}
std::unique_ptr<atUint8[]> PAK::Entry::getBuffer(const NOD::DiscBase::IPartition::Node& pak, atUint64& szOut) const
{
if (compressed)
{
std::unique_ptr<NOD::IPartReadStream> strm = pak.beginReadStream(offset);
atUint32 decompSz;
strm->read(&decompSz, 4);
decompSz = HECL::SBig(decompSz);
atUint8* buf = new atUint8[decompSz];
atUint8* bufCur = buf;
atUint16 zlibCheck;
strm->read(&zlibCheck, 2);
zlibCheck = HECL::SBig(zlibCheck);
strm->seek(-2, SEEK_CUR);
atUint8 compBuf[0x4000];
if ((zlibCheck % 31) == 0)
{
atUint32 compRem = size - 4;
z_stream zs;
inflateInit(&zs);
zs.avail_out = decompSz;
zs.next_out = buf;
while (zs.avail_out)
{
atUint64 readSz = strm->read(compBuf, MIN(compRem, 0x4000));
compRem -= readSz;
zs.avail_in = readSz;
zs.next_in = compBuf;
inflate(&zs, Z_FINISH);
}
inflateEnd(&zs);
}
else
{
atUint32 rem = decompSz;
while (rem)
{
atUint16 chunkSz;
strm->read(&chunkSz, 2);
chunkSz = HECL::SBig(chunkSz);
strm->read(compBuf, chunkSz);
lzo_uint dsz = rem;
lzo1x_decompress(compBuf, chunkSz, bufCur, &dsz, nullptr);
bufCur += dsz;
rem -= dsz;
}
}
szOut = decompSz;
return std::unique_ptr<atUint8[]>(buf);
}
else
{
atUint8* buf = new atUint8[size];
pak.beginReadStream(offset)->read(buf, size);
szOut = size;
return std::unique_ptr<atUint8[]>(buf);
}
}
}
}