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2017-11-16 11:34:52 +04:00
//! \file ArcPCK.cs
//! \date 2017 Nov 16
//! \brief TamamoSystem 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.Linq;
using System.Text;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using GameRes.Cryptography;
using GameRes.Formats.Properties;
using GameRes.Formats.Strings;
namespace GameRes.Formats.Tamamo
{
[Serializable]
public class PckScheme : ResourceScheme
{
public Dictionary<string, byte[]> KnownKeys;
}
public class PckOptions : ResourceOptions
{
public byte[] Key { get; set; }
}
internal class PckArchive : ArcFile
{
public readonly Blowfish Encryption;
public PckArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte[] key)
: base (arc, impl, dir)
{
Encryption = new Blowfish (key);
}
}
[Export(typeof(ArchiveFormat))]
public class PckOpener : ArchiveFormat
{
public override string Tag { get { return "PCK/TAMAMO"; } }
public override string Description { get { return "TamamoSystem resource archive"; } }
public override uint Signature { get { return 0x4B434150; } } // 'PACK'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (4, "_FILE001"))
return null;
int count = file.View.ReadInt32 (0xC);
if (!IsSaneCount (count))
return null;
var key = QueryKey (file.Name);
if (null == key)
return null;
uint index_length = file.View.ReadUInt32 (0x10);
var index = file.View.ReadBytes (0x14, index_length);
if (index.Length != index_length)
return null;
var bf = new Blowfish (key);
bf.Decipher (index, index.Length);
long data_offset = 0x14 + index_length;
int pos = 0;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
uint size = index.ToUInt32 (pos);
pos += 4;
int name_end = Array.IndexOf<byte> (index, 0, pos);
if (-1 == name_end)
return null;
var name = Encodings.cp932.GetString (index, pos, name_end-pos);
pos = name_end+1;
uint enc_size = index.ToUInt32 (pos);
pos += 4;
var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
entry.Offset = data_offset;
entry.Size = enc_size;
entry.UnpackedSize = size;
entry.IsPacked = enc_size != size;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
data_offset += enc_size + 1;
}
return new PckArchive (file, this, dir, key);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var parc = (PckArchive)arc;
var pent = (PackedEntry)entry;
byte data_type = arc.File.View.ReadByte (pent.Offset);
Stream input = arc.File.CreateStream (pent.Offset+1, pent.Size);
if (data_type != 0)
{
input = new InputCryptoStream (input, parc.Encryption.CreateDecryptor());
if (data_type != 3)
{
input = new LimitStream (input, pent.UnpackedSize);
}
else
{
// input = new Bzip2InputStream (input); // requires #ZipLib/DonNetZip
}
}
return input;
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
var decoder = base.OpenImage (arc, entry);
// if (!entry.Name.StartsWith ("ev")) // XXX
// return decoder;
if (1024 != decoder.Info.Width || 512 != decoder.Info.Height)
return decoder;
var source = decoder.Image.Bitmap;
if (PixelFormats.Bgra32 == source.Format)
return decoder;
using (decoder)
{
var ev_bitmap = new WriteableBitmap (800, 600, ImageData.DefaultDpiX, ImageData.DefaultDpiY,
source.Format, source.Palette);
var rect = new Int32Rect (0, 0, 800, 512);
int buffer_size = ev_bitmap.BackBufferStride * ev_bitmap.PixelHeight;
ev_bitmap.Lock();
source.CopyPixels (rect, ev_bitmap.BackBuffer, buffer_size, ev_bitmap.BackBufferStride);
ev_bitmap.AddDirtyRect (rect);
ev_bitmap.Unlock();
CopyRegion (source, new Int32Rect (800, 0, 88, 400), ev_bitmap, 0, 512);
CopyRegion (source, new Int32Rect (888, 0, 88, 400), ev_bitmap, 400, 512);
return new BitmapSourceDecoder (ev_bitmap);
}
}
void CopyRegion (BitmapSource source, Int32Rect rect, WriteableBitmap target, int dst_x, int dst_y)
{
int bpp = source.Format.BitsPerPixel / 8;
int width = rect.Width;
int height = rect.Height;
int src_stride = width * bpp;
var src_pixels = new byte[src_stride * height];
source.CopyPixels (rect, src_pixels, src_stride, 0);
var transformed = new byte[src_pixels.Length];
int dst_stride = height * bpp;
for (int y = 0; y < height; ++y)
{
int src = y * src_stride;
int dst = (width - 1) * dst_stride + y * bpp;
for (int x = 0; x < width; ++x)
{
for (int p = 0; p < bpp; ++p)
{
transformed[dst+p] = src_pixels[src+p];
}
src += bpp;
dst -= dst_stride;
}
}
var target_rect = new Int32Rect (0, 0, height, width);
target.WritePixels (target_rect, transformed, dst_stride, dst_x, dst_y);
}
PckScheme DefaultScheme = new PckScheme {
KnownKeys = new Dictionary<string, byte[]>()
};
public Dictionary<string, byte[]> KnownKeys { get { return DefaultScheme.KnownKeys; } }
public override ResourceScheme Scheme
{
get { return DefaultScheme; }
set { DefaultScheme = (PckScheme)value; }
}
public override object GetAccessWidget ()
{
return new GUI.WidgetPCK (KnownKeys.Keys.OrderBy (x => x));
}
public override ResourceOptions GetDefaultOptions ()
{
return new PckOptions {
Key = GetKeyForTitle (Settings.Default.PCKTitle)
};
}
byte[] QueryKey (string arc_name)
{
if (0 == KnownKeys.Count)
return null;
if (1 == KnownKeys.Count)
return KnownKeys.Values.First();
var title = FormatCatalog.Instance.LookupGame (arc_name);
var key = GetKeyForTitle (title);
if (key != null)
return key;
var options = Query<PckOptions> (arcStrings.ArcEncryptedNotice);
return options.Key;
}
byte[] GetKeyForTitle (string title)
{
byte[] key = null;
if (!string.IsNullOrEmpty (title))
KnownKeys.TryGetValue (title, out key);
return key;
}
}
internal class BitmapSourceDecoder : IImageDecoder
{
public Stream Source { get { return null; } }
public ImageFormat SourceFormat { get { return null; } }
public ImageMetaData Info { get; private set; }
public ImageData Image { get; private set; }
public BitmapSourceDecoder (BitmapSource bitmap)
{
Info = new ImageMetaData {
Width = (uint)bitmap.PixelWidth,
Height = (uint)bitmap.PixelHeight,
BPP = bitmap.Format.BitsPerPixel,
};
Image = new ImageData (bitmap);
}
public void Dispose ()
{
}
}
}