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https://github.com/crskycode/GARbro.git
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138 lines
5.6 KiB
C#
138 lines
5.6 KiB
C#
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//! \file ArcDAT.cs
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//! \date 2017 Dec 21
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//! \brief C's Ware BLITZ resource archive.
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//
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// Copyright (C) 2017 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.Windows.Media;
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using GameRes.Compression;
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namespace GameRes.Formats.CsWare
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{
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[Export(typeof(ArchiveFormat))]
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public class PakOpener : ArchiveFormat
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{
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public override string Tag { get { return "DAT/CSWARE"; } }
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public override string Description { get { return "C's Ware BLITZ resource archive"; } }
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public override uint Signature { get { return 0; } }
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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public override ArcFile TryOpen (ArcView file)
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{
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int count = file.View.ReadInt32 (0);
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if (!IsSaneCount (count))
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return null;
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uint packed_size = file.View.ReadUInt32 (4);
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if (packed_size >= file.MaxOffset)
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return null;
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if (file.View.ReadByte (8) != 0x78) // zlib stream signature
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return null;
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long data_offset = 8 + packed_size;
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using (var input = file.CreateStream (8, packed_size))
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using (var unpacked = new ZLibStream (input, CompressionMode.Decompress))
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using (var index = new BinaryStream (unpacked, file.Name))
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{
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var dir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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var name = index.ReadCString (0x18);
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if (string.IsNullOrEmpty (name))
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return null;
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var entry = FormatCatalog.Instance.Create<Entry> (name);
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entry.Offset = index.ReadUInt32() + data_offset;
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entry.Size = index.ReadUInt32();
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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dir.Add (entry);
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}
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return new ArcFile (file, this, dir);
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}
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}
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public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
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{
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if (entry.Size < 0x36 || !arc.File.View.AsciiEqual (entry.Offset, "BM"))
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return base.OpenImage (arc, entry);
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uint header_size = arc.File.View.ReadUInt32 (entry.Offset + 0xA);
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if (header_size < 0x36 || header_size > entry.Size)
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return base.OpenImage (arc, entry);
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int height = arc.File.View.ReadInt32 (entry.Offset + 0x16);
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var info = new BmMetaData {
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Width = arc.File.View.ReadUInt32 (entry.Offset + 0x12),
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Height = (uint)Math.Abs (height),
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BPP = arc.File.View.ReadUInt16 (entry.Offset + 0x1C),
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DataOffset = header_size,
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IsFlipped = height > 0,
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IsCompressed = arc.File.View.ReadUInt32 (0x32) != 0,
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};
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var input = arc.File.CreateStream (entry.Offset, entry.Size);
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return new BmpDecoder (input, info);
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}
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}
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internal class BmMetaData : ImageMetaData
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{
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public uint DataOffset;
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public bool IsFlipped;
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public bool IsCompressed;
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}
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internal class BmpDecoder : BinaryImageDecoder
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{
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public BmpDecoder (IBinaryStream input, BmMetaData info) : base (input, info)
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{
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}
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protected override ImageData GetImageData ()
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{
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var meta = (BmMetaData)Info;
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m_input.Position = meta.DataOffset;
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int stride = (int)Info.Width * Info.BPP / 8;
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var pixels = new byte[stride * (int)Info.Height];
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if (meta.IsCompressed)
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{
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using (var unpacked = new ZLibStream (m_input.AsStream, CompressionMode.Decompress, true))
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unpacked.Read (pixels, 0, pixels.Length);
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}
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else
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{
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m_input.Read (pixels, 0, pixels.Length);
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}
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PixelFormat format;
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if (24 == Info.BPP)
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format = PixelFormats.Bgr24;
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else if (32 == Info.BPP)
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format = PixelFormats.Bgra32;
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else
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throw new InvalidFormatException();
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if (meta.IsFlipped)
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return ImageData.CreateFlipped (Info, format, null, pixels, stride);
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else
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return ImageData.Create (Info, format, null, pixels, stride);
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}
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}
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}
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