Stream UnpackEntry(IBinaryStream input, MmaEntry entry)
{
uint flags = entry.Flags & 6;
if (6 == flags && 0 == entry.HeaderSize)
{
using (input)
{
var data = new byte[entry.UnpackedSize];
UnpackLz(input, data, 0);
return(new BinMemoryStream(data, entry.Name));
}
}
else if (4 == flags)
{
using (input)
{
input.Position = (int)entry.HeaderSize;
var data = input.ReadBytes((int)entry.UnpackedSize);
Decrypt(data, 0, data.Length);
return(new BinMemoryStream(data, entry.Name));
}
}
return(input.AsStream);
}
public MmeMaskDecoder(IBinaryStream input, MmaEntry entry) : base(input, entry)
{
m_width = m_input.ReadInt32();
m_height = m_input.ReadInt32();
m_stride = m_width;
Info = new ImageMetaData {
Width = (uint)m_width,
Height = (uint)m_height,
BPP = 8,
};
m_output = new byte[entry.UnpackedSize];
Format = PixelFormats.Gray8;
}
void ReadMmaList(ArcView file, List <Entry> dir, MmaEntry index_entry)
{
using (var packed = file.CreateStream(index_entry.Offset, index_entry.Size))
using (var unpacked = UnpackEntry(packed, index_entry))
using (var index = new StreamReader(unpacked, Encodings.cp932))
{
for (int i = 0; i < dir.Count; ++i)
{
// int type = index.Read();
// if (-1 == type)
// break;
var name = index.ReadLine();
if (null == name)
{
break;
}
dir[i].Name = Path.GetFileName(name);
}
}
}
public MmeImageDecoder(IBinaryStream input, MmaEntry entry) : base(input, entry)
{
m_width = m_input.ReadInt32();
m_height = m_input.ReadInt32();
m_bpp = m_input.ReadInt32();
m_stride = m_input.ReadInt32();
Info = new ImageMetaData {
Width = (uint)m_width,
Height = (uint)m_height,
BPP = m_bpp,
};
m_output = new byte[entry.UnpackedSize];
if (24 == m_bpp)
{
Format = PixelFormats.Bgr24;
}
else
{
Format = PixelFormats.Bgr32;
}
}
public override ArcFile TryOpen(ArcView file)
{
int version = file.View.ReadInt32(0xC);
if (version != 1)
{
return(null);
}
int count = file.View.ReadInt32(0x10);
if (!IsSaneCount(count))
{
return(null);
}
uint index_offset = file.View.ReadUInt32(4);
if (index_offset >= file.MaxOffset)
{
return(null);
}
var base_name = Path.GetFileNameWithoutExtension(file.Name);
var dir = new List <Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = new MmaEntry {
Name = string.Format("{0}#{1:D5}", base_name, i),
Offset = file.View.ReadUInt32(index_offset),
UnpackedSize = file.View.ReadUInt32(index_offset + 4),
Size = file.View.ReadUInt32(index_offset + 8),
HeaderSize = file.View.ReadUInt32(index_offset + 0x0C),
Flags = file.View.ReadUInt32(index_offset + 0x10),
};
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
switch (entry.Flags & 0x38)
{
case 8:
case 0x10:
case 0x18:
case 0x38:
entry.Type = "image";
break;
default:
if (0x2D == entry.Flags)
{
entry.Type = "audio";
}
break;
}
dir.Add(entry);
index_offset += 0x14;
}
var list_entry = dir[0] as MmaEntry;
if (0x2F == list_entry.Flags)
{
ReadMmaList(file, dir, list_entry);
}
return(new ArcFile(file, this, dir));
}
protected MmeBaseDecoder(IBinaryStream input, MmaEntry entry) : base(input)
{
m_header_size = (int)entry.HeaderSize;
m_flags = entry.Flags;
}