GARbro-mirror/ArcFormats/GameSystem/ArcPureMail.cs

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//! \file ArcPureMail.cs
//! \date Sun Feb 12 04:18:56 2017
//! \brief 0verflow Game System resource archive.
//
// Copyright (C) 2017 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
namespace GameRes.Formats.GameSystem
{
internal class PmDatEntry : PackedEntry
{
public bool StoredSize;
}
[Export(typeof(ArchiveFormat))]
public class PmDatOpener : ArchiveFormat
{
public override string Tag { get { return "DAT/PUREMAIL"; } }
public override string Description { get { return "PureMail resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
if (file.MaxOffset <= 12 || file.MaxOffset > uint.MaxValue)
return null;
uint packed_size = file.View.ReadUInt32 (file.MaxOffset-12) ^ 0xF0F0F0F0;
uint unpacked_size = file.View.ReadUInt32 (file.MaxOffset-8) ^ 0xF0F0F0F0;
const uint entry_record_size = 0x50;
int count = (int)(unpacked_size / entry_record_size);
if (unpacked_size % entry_record_size != 0 || packed_size >= file.MaxOffset || !IsSaneCount (count))
return null;
var unpacked = new byte[unpacked_size];
using (var packed = file.CreateStream (file.MaxOffset-12-packed_size, packed_size))
LzUnpack (packed, unpacked);
using (var index = new BinMemoryStream (unpacked))
{
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
int flags = index.ReadInt32();
var name = index.ReadCString (0x40);
var entry = FormatCatalog.Instance.Create<PmDatEntry> (name);
entry.Offset = index.ReadUInt32();
entry.Size = index.ReadUInt32();
entry.UnpackedSize = index.ReadUInt32();
if (!entry.CheckPlacement (file.MaxOffset))
return null;
if (entry.Name.EndsWith (".CRGB", StringComparison.InvariantCultureIgnoreCase) ||
entry.Name.EndsWith (".CHAR", StringComparison.InvariantCultureIgnoreCase) ||
entry.Name.EndsWith (".rol", StringComparison.InvariantCultureIgnoreCase) ||
entry.Name.EndsWith (".edg", StringComparison.InvariantCultureIgnoreCase))
entry.Type = "image";
entry.IsPacked = (flags & 0xFF0000) != 0;
entry.StoredSize = (flags & 0x2000000) != 0;
dir.Add (entry);
}
return new ArcFile (file, this, dir);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var pent = entry as PmDatEntry;
if (null == pent || !pent.IsPacked)
return base.OpenEntry (arc, entry);
using (var input = arc.File.CreateStream (entry.Offset, entry.Size))
{
var unpacked_size = pent.UnpackedSize;
if (pent.StoredSize)
{
unpacked_size = input.ReadUInt32();
pent.UnpackedSize = unpacked_size;
}
var output = new byte[unpacked_size];
LzUnpack (input, output);
return new BinMemoryStream (output);
}
}
void LzUnpack (IBinaryStream input, byte[] output)
{
var frame = new byte[0x1000];
int dst = 0;
int bits = 0;
int mask = 0;
int frame_pos = 0xFEE;
while (dst < output.Length)
{
mask >>= 1;
if (0 == mask)
{
bits = input.ReadByte();
if (-1 == bits)
break;
mask = 0x80;
}
if (0 == (bits & mask))
{
int b = input.ReadByte();
if (-1 == b)
break;
output[dst++] = (byte)b;
frame[frame_pos++ & 0xFFF] = (byte)b;
}
else
{
int offset = input.ReadUInt16();
int count = (offset & 0xF) + 3;
offset >>= 4;
while (count --> 0 && dst < output.Length)
{
byte v = frame[offset++ & 0xFFF];
frame[frame_pos++ & 0xFFF] = v;
output[dst++] = v;
}
}
}
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
if (entry.Name.EndsWith (".BGD", StringComparison.InvariantCultureIgnoreCase) ||
entry.Name.EndsWith (".CRGB", StringComparison.InvariantCultureIgnoreCase))
{
var input = OpenEntry (arc, entry);
var info = new ImageMetaData { Width = 800, Height = 600, BPP = 24 };
return new CgdReader (BinaryStream.FromStream (input, entry.Name), info);
}
else if (entry.Name.EndsWith (".edg", StringComparison.InvariantCultureIgnoreCase))
{
var input = OpenEntry (arc, entry);
var info = new ImageMetaData { Width = 460, Height = 345, BPP = 24 };
return new ImgReader (BinaryStream.FromStream (input, entry.Name), info);
}
else if (entry.Name.EndsWith (".rol", StringComparison.InvariantCultureIgnoreCase))
{
var input = OpenEntry (arc, entry);
uint width = 202;
uint height = (uint)input.Length / (((width * 3u) + 3u) & ~3u);
var info = new ImageMetaData { Width = width, Height = height, BPP = 24 };
return new ImgReader (BinaryStream.FromStream (input, entry.Name), info);
}
else if (entry.Name.EndsWith (".CHAR", StringComparison.InvariantCultureIgnoreCase))
{
var input = OpenEntry (arc, entry);
var info = new ChrMetaData {
Width = 800, Height = 600, BPP = 32,
DataOffset = 0, RgbSize = (int)input.Length,
};
return new ChrReader (BinaryStream.FromStream (input, entry.Name), info);
}
return base.OpenImage (arc, entry);
}
}
internal class ImgReader : BinaryImageDecoder
{
public ImgReader (IBinaryStream input, ImageMetaData info) : base (input, info)
{
}
protected override ImageData GetImageData ()
{
m_input.Position = 0;
int stride = (int)Info.Width * Info.BPP / 8;
stride = (stride + 3) & ~3;
int total = stride * (int)Info.Height;
var pixels = m_input.ReadBytes (total);
if (pixels.Length != total)
throw new EndOfStreamException();
return ImageData.CreateFlipped (Info, PixelFormats.Bgr24, null, pixels, stride);
}
}
}