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(Kaguya): recognize compressed BM bitmaps.

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This commit is contained in:
poddav 2022-04-29 13:25:31 +04:00
parent 6090c72401
commit 14e2a74c22
2 changed files with 103 additions and 25 deletions
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2
ArcFormats/Kaguya/ArcLIN2.cs
View File

@ -90,7 +90,7 @@ namespace GameRes.Formats.Kaguya
}
}
byte[] UnpackLzss (IBinaryStream input, uint unpacked_size)
internal static byte[] UnpackLzss (IBinaryStream input, uint unpacked_size)
{
var output = new byte[unpacked_size];
var frame = new byte[0x100];

126
ArcFormats/Kaguya/ArcLINK.cs
View File

@ -65,7 +65,7 @@ namespace GameRes.Formats.Kaguya
{
int version = file.View.ReadByte (4) - '0';
if (version < 3 || version > 6)
return null;
return ReadOldIndex (file);
using (var reader = LinkReader.Create (file, version))
{
@ -87,7 +87,22 @@ namespace GameRes.Formats.Kaguya
{
var lent = entry as LinkEntry;
if (null == lent || (!lent.IsPacked && !lent.IsEncrypted))
{
if (entry.Size > 8)
{
uint unpacked_size = arc.File.View.ReadUInt32 (entry.Offset);
int id = arc.File.View.ReadUInt16 (entry.Offset+5);
if (id == 0x4D42) // 'BM'
{
using (var input = arc.File.CreateStream (entry.Offset+4, entry.Size-4, entry.Name))
{
var data = Lin2Opener.UnpackLzss (input, unpacked_size);
return new BinMemoryStream (data, entry.Name);
}
}
}
return base.OpenEntry (arc, entry);
}
if (lent.IsEncrypted)
{
var larc = arc as LinkArchive;
@ -102,6 +117,35 @@ namespace GameRes.Formats.Kaguya
return new BinMemoryStream (bmr.Data, entry.Name);
}
}
internal ArcFile ReadOldIndex (ArcView file)
{
int count = file.View.ReadInt32 (4);
if (!IsSaneCount (count))
return null;
var dir = new List<Entry> (count);
using (var index = file.CreateStream())
{
index.Position = 8;
uint names_size = index.ReadUInt32();
for (int i = 0; i < count; ++i)
{
var name = index.ReadCString();
var entry = FormatCatalog.Instance.Create<Entry> (name);
dir.Add (entry);
}
index.Position = 12 + names_size;
foreach (var entry in dir)
{
entry.Offset = index.ReadUInt32();
entry.Size = index.ReadUInt32();
if (!entry.CheckPlacement (file.MaxOffset))
return null;
}
}
return new ArcFile (file, this, dir);
}
}
internal class LinkReader : IDisposable
@ -440,9 +484,15 @@ namespace GameRes.Formats.Kaguya
var header = input.ReadHeader (0x11);
if (header.AsciiEqual ("[SCR-PARAMS]v0"))
{
var version = Version.Parse (header.GetCString (13, 4));
Version version;
if ('.' == header[15])
version = Version.Parse (header.GetCString (13, 4));
else
version = new Version (header[14] - '0', 0);
if (2 == version.Major)
return new ParamsV2Deserializer (input, version);
else if (version.Major < 5)
return new ParamsV4Deserializer (input, version);
else if (5 == version.Major && (version.Minor >= 4 && version.Minor <= 7))
return new ParamsV5Deserializer (input, version);
}
@ -499,6 +549,22 @@ namespace GameRes.Formats.Kaguya
SkipString();
}
}
protected void ReadHeader (int start)
{
m_input.Position = start;
SkipChunk();
m_title = ReadString();
if (m_version.Major < 3)
m_input.ReadCString();
SkipString();
SkipString();
m_input.ReadByte();
SkipString();
SkipString();
SkipDict();
m_input.ReadByte();
}
}
internal class ParamsV2Deserializer : ParamsDeserializer
@ -515,17 +581,7 @@ namespace GameRes.Formats.Kaguya
public override byte[] GetKey ()
{
m_input.Position = 0x17;
SkipChunk();
m_title = ReadString();
m_input.ReadCString();
SkipString();
SkipString();
m_input.ReadByte();
SkipString();
SkipString();
SkipDict();
m_input.ReadByte();
ReadHeader (0x17);
if ("幼なじみと甘～くエッチに過ごす方法" == m_title)
{
@ -565,6 +621,37 @@ namespace GameRes.Formats.Kaguya
}
}
internal class ParamsV4Deserializer : ParamsDeserializer
{
public ParamsV4Deserializer (IBinaryStream input, Version version) : base (input, version)
{
}
public override byte[] GetKey ()
{
ReadHeader (0x19);
Skip (m_version.Major < 5 ? 12 : 11);
int count = m_input.ReadUInt8();
for (int i = 0; i < count; ++i)
{
m_input.ReadByte();
SkipChunk();
SkipArray();
SkipArray();
}
SkipDict();
count = m_input.ReadUInt8();
for (int i = 0; i < count; ++i)
{
SkipChunk();
SkipArray();
SkipArray();
}
return ReadKey();
}
}
internal class ParamsV5Deserializer : ParamsDeserializer
{
public ParamsV5Deserializer (IBinaryStream input, Version version) : base (input, version)
@ -573,18 +660,9 @@ namespace GameRes.Formats.Kaguya
public override byte[] GetKey ()
{
// ハラミタマ
m_input.Position = 0x1B;
SkipChunk();
m_title = ReadString();
SkipString();
SkipString();
m_input.ReadByte();
SkipString();
SkipString();
SkipDict();
ReadHeader (0x1B);
Skip (m_version.Minor <= 4 ? 0x10 : 0x11);
Skip (m_version.Minor <= 4 ? 15 : 16);
for (int i = 0; i < 3; ++i)
{
if (0 != m_input.ReadUInt8())