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https://github.com/crskycode/GARbro.git
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309 lines
11 KiB
C#
309 lines
11 KiB
C#
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//! \file ArcARC.cs
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//! \date 2023 Aug 26
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//! \brief Kogado resource archive.
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//
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// Copyright (C) 2023 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 GameRes.Compression;
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using GameRes.Formats.DirectDraw;
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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.IO;
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using System.Text;
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using System.Windows.Media;
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// [070302][G-mode] Keitai Shoujo
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namespace GameRes.Formats.Kogado
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{
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[Export(typeof(ArchiveFormat))]
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public class ArcOpener : ArchiveFormat
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{
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public override string Tag { get => "ARC/KOGADO"; }
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public override string Description { get => "Kogado engine resource archive"; }
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public override uint Signature { get => 0xA8BCADBE; } // 'ARCW' ^ 0xFFFFFFFF
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public override bool IsHierarchic { get => true; }
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public override bool CanWrite { get => false; }
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public override ArcFile TryOpen (ArcView file)
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{
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using (var reader = new ArcIndexReader (file))
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{
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var dir = reader.ReadIndex();
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return new ArcFile(file, this, dir);
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}
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
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input = new XoredStream (input, 0xFF);
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var ova = entry as OvaEntry;
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if (ova != null)
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return new PrefixStream (ova.Header, input);
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var pent = entry as PackedEntry;
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if (null == pent || !pent.IsPacked)
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return input;
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return new LimitStream (new LzssStream (input), pent.UnpackedSize);
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}
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public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
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{
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var dds = entry as DdsEntry;
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if (null == dds)
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return base.OpenImage (arc, entry);
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var input = this.OpenEntry (arc, entry);
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return new ImageDecoder (input, dds.Info);
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}
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}
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internal class OvaEntry : PackedEntry
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{
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public byte[] Header;
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}
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internal class DdsEntry : PackedEntry
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{
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public DdsInfo Info;
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}
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internal class DdsInfo : ImageMetaData
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{
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public DdsPF Flags;
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}
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internal sealed class ArcIndexReader : IDisposable
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{
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IBinaryStream m_input;
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uint m_base_offset;
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long m_max_offset;
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public ArcIndexReader (ArcView arc)
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{
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m_base_offset = arc.View.ReadUInt32 (0xC);
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m_max_offset = arc.MaxOffset;
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m_input = arc.CreateStream();
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}
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byte[] m_filenames;
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byte[] m_index;
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List<Entry> m_dir;
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public List<Entry> ReadIndex ()
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{
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m_input.Position = 0x10;
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m_filenames = ReadChunk();
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m_index = ReadChunk();
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m_dir = new List<Entry>();
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int section_count = m_index.ToInt32 (0);
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int pos = 4;
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for (int i = 0; i < section_count; ++i)
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{
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int count = m_index.ToInt32 (pos+8);
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if (m_dir.Capacity < m_dir.Count + count)
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m_dir.Capacity = m_dir.Count + count;
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int section_size = m_index.ToInt32 (pos+0xC);
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int name_pos = pos + 0x10;
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int layout_pos = name_pos + 4 * count;
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if (m_index.AsciiEqual (pos, "DDS\0"))
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ReadDdsSection (name_pos, layout_pos, count);
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else if (m_index.AsciiEqual (pos, "OVA\0"))
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ReadOvaSection (name_pos, layout_pos, count);
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else
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ReadSection (name_pos, layout_pos, count);
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pos += 0x10 + section_size;
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}
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return m_dir;
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}
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void ReadSection (int name_pos, int layout_pos, int count)
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{
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for (int j = 0; j < count; ++j)
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{
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var name = ReadFileName (m_index.ToInt32 (name_pos));
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var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
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entry.Offset = m_index.ToUInt32 (layout_pos) + m_base_offset;
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entry.Size = m_index.ToUInt32 (layout_pos+4);
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entry.UnpackedSize = m_index.ToUInt32 (layout_pos+0xC);
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entry.IsPacked = true;
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if (!entry.CheckPlacement (m_max_offset+0x14))
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throw new InvalidFormatException();
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m_dir.Add (entry);
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name_pos += 4;
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layout_pos += 0x10;
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}
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}
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void ReadDdsSection (int name_pos, int layout_pos, int count)
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{
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int header_count = m_index.ToInt32 (layout_pos);
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var headers = new DdsInfo[header_count];
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layout_pos += 4;
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for (int i = 0; i < header_count; ++i)
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{
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headers[i] = new DdsInfo {
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Width = m_index.ToUInt32 (layout_pos+4),
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Height = m_index.ToUInt32 (layout_pos+8),
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BPP = 32,
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Flags = (DdsPF)m_index.ToUInt32 (layout_pos),
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};
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layout_pos += 0xC;
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}
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for (int j = 0; j < count; ++j)
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{
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var name = ReadFileName (m_index.ToInt32 (name_pos));
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var entry = FormatCatalog.Instance.Create<DdsEntry> (name);
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entry.Offset = m_index.ToUInt32 (layout_pos) + m_base_offset;
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entry.Size = m_index.ToUInt32 (layout_pos+4);
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entry.UnpackedSize = m_index.ToUInt32 (layout_pos+0xC);
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int header_id = m_index.ToInt32 (layout_pos+0x10);
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entry.Info = headers[header_id];
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entry.IsPacked = true;
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if (!entry.CheckPlacement (m_max_offset+0x14))
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throw new InvalidFormatException();
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m_dir.Add (entry);
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name_pos += 4;
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layout_pos += 0x14;
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}
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}
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void ReadOvaSection (int name_pos, int layout_pos, int count)
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{
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int header_count = m_index.ToInt32 (layout_pos+4);
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var headers = new byte[header_count][];
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layout_pos += 8;
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for (int i = 0; i < header_count; ++i)
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{
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int header_len = m_index.ToInt32 (layout_pos+8);
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int header_pos = layout_pos + 12;
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headers[i] = new CowArray<byte> (m_index, header_pos, header_len).ToArray();
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layout_pos = header_pos + header_len;
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}
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for (int j = 0; j < count; ++j)
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{
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var name = ReadFileName (m_index.ToInt32 (name_pos));
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var entry = FormatCatalog.Instance.Create<OvaEntry> (name);
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entry.Offset = m_index.ToUInt32 (layout_pos) + m_base_offset;
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entry.UnpackedSize = m_index.ToUInt32 (layout_pos+4);
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int header_id = m_index.ToInt32 (layout_pos+8);
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entry.Header = headers[header_id];
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entry.Size = entry.UnpackedSize - (uint)entry.Header.Length;
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entry.IsPacked = true;
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if (!entry.CheckPlacement (m_max_offset))
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throw new InvalidFormatException();
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m_dir.Add (entry);
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name_pos += 4;
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layout_pos += 0xC;
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}
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}
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string ReadFileName (int pos)
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{
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int i;
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for (i = pos; i+1 < m_filenames.Length; i += 2)
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{
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if (m_filenames[i] == 0 && m_filenames[i+1] == 0)
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break;
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}
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return Encoding.Unicode.GetString (m_filenames, pos, i - pos);
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}
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byte[] ReadChunk ()
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{
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long start_pos = m_input.Position;
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int size = m_input.ReadInt32();
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int type = m_input.ReadInt32();
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int unpacked_size = m_input.ReadInt32();
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if (size <= 0 || unpacked_size <= 0)
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throw new InvalidFormatException();
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var data = new byte[unpacked_size];
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using (var decrypted = new XoredStream (m_input.AsStream, 0xFF, true))
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using (var lzss = new LzssStream (decrypted))
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{
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lzss.Read (data, 0, data.Length);
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}
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m_input.Position = start_pos + size;
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return data;
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}
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#region IDisposable Members
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bool _disposed = false;
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public void Dispose ()
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{
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if (!_disposed)
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{
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m_input.Dispose();
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_disposed = true;
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}
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GC.SuppressFinalize (this);
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}
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#endregion
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}
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internal sealed class ImageDecoder : IImageDecoder
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{
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Stream m_input;
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ImageData m_image;
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public Stream Source => m_input;
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public ImageFormat SourceFormat => null;
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public PixelFormat Format { get; private set; }
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public ImageMetaData Info { get; private set; }
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public ImageData Image => m_image ?? (m_image = GetImageData());
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public ImageDecoder (Stream input, DdsInfo info)
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{
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m_input = input;
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Info = info;
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Format = info.Flags.HasFlag (DdsPF.AlphaPixels) ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
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}
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private ImageData GetImageData ()
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{
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var pixels = new byte[Info.iWidth * Info.iHeight * 4];
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m_input.Read (pixels, 0, pixels.Length);
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return ImageData.Create (Info, Format, null, pixels);
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}
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#region IDisposable members
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bool m_disposed = false;
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public void Dispose ()
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{
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if (!m_disposed)
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{
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m_input.Dispose();
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m_disposed = true;
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}
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GC.SuppressFinalize (this);
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}
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#endregion
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}
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}
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