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317 lines
10 KiB
C#
317 lines
10 KiB
C#
//! \file ArcDAT.cs
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//! \date 2022 May 24
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//! \brief Pias resource archive.
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//
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// Copyright (C) 2022-2023 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.Utility;
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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.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Windows.Media;
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// [990528][Pias] Galfro ~Gal's Frontier~
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namespace GameRes.Formats.Pias
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{
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enum ResourceType
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{
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Undefined = -1,
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Graphics = 1,
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Sound = 2,
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}
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internal class IndexReader
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{
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internal const bool UseOffsetAsName = true;
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protected ArcView m_arc;
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protected ResourceType m_res;
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protected List<Entry> m_dir;
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public bool IsEncrypted { get; protected set; }
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public IndexReader (ArcView arc, ResourceType res)
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{
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m_arc = arc;
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m_res = res;
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m_dir = null;
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}
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public List<Entry> GetIndex ()
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{
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if (m_res > 0)
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{
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var text_name = VFS.ChangeFileName (m_arc.Name, "text.dat");
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if (!VFS.FileExists (text_name))
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return null;
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IBinaryStream input = VFS.OpenBinaryStream (text_name);
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try
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{
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if (DatOpener.EncryptedSignatures.Contains (input.Signature))
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return null;
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var reader = new TextReader (input);
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m_dir = reader.GetResourceList ((int)m_res);
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}
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finally
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{
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input.Dispose();
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}
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}
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if (null == m_dir)
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m_dir = new List<Entry>();
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if (!FillEntries())
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return null;
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return m_dir;
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}
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protected bool FillEntries ()
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{
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uint header_size = 4;
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string entry_type = "audio";
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if (ResourceType.Graphics == m_res)
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{
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header_size = 8;
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entry_type = "image";
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}
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for (int i = m_dir.Count - 1; i >= 0; --i)
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{
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var entry = m_dir[i];
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entry.Size = m_arc.View.ReadUInt32 (entry.Offset) + header_size;
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entry.Name = i.ToString("D4");
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entry.Type = entry_type;
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}
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var known_offsets = new HashSet<long> (m_dir.Select (e => e.Offset));
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long offset = 0;
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while (offset < m_arc.MaxOffset)
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{
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uint entry_size = m_arc.View.ReadUInt32(offset);
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if (uint.MaxValue == entry_size)
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{
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entry_size = 4;
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}
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else
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{
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entry_size += header_size;
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if (!known_offsets.Contains (offset))
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{
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var entry = new Entry {
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Name = GetName (offset, m_dir.Count),
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Type = entry_type,
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Offset = offset,
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Size = entry_size,
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};
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if (!entry.CheckPlacement (m_arc.MaxOffset))
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return false;
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m_dir.Add (entry);
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}
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}
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offset += entry_size;
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}
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return true;
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}
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internal string GetName (long offset, int num)
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{
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return UseOffsetAsName ? offset.ToString ("D8") : num.ToString("D4");
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}
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}
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[Export(typeof(ArchiveFormat))]
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public class DatOpener : ArchiveFormat
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{
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public override string Tag => "DAT/PIAS";
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public override string Description => "Pias resource archive";
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public override uint Signature => 0;
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public override bool IsHierarchic => false;
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public override bool CanWrite => false;
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public DatOpener ()
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{
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Signatures = new[] { 0x0002C026u, 0u };
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}
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internal static readonly HashSet<uint> EncryptedSignatures = new HashSet<uint> { 0x03184767u };
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public override ArcFile TryOpen (ArcView file)
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{
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var arc_name = Path.GetFileName (file.Name).ToLowerInvariant();
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ResourceType resource_type = ResourceType.Undefined;
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if ("sound.dat" == arc_name)
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resource_type = ResourceType.Sound;
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else if ("graph.dat" == arc_name)
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resource_type = ResourceType.Graphics;
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else if ("voice.dat" != arc_name && "music.dat" != arc_name)
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return null;
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var index = new IndexReader (file, resource_type);
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var dir = index.GetIndex();
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if (null == dir)
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return null;
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return new ArcFile (file, this, dir);
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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 input = arc.OpenBinaryEntry (entry);
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return new GraphImageDecoder (input);
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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if (entry.Type != "audio")
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return base.OpenEntry (arc, entry);
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var format = new WaveFormat
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{
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FormatTag = 1,
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SamplesPerSecond = 22050,
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BitsPerSample = 8,
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};
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if (VFS.IsPathEqualsToFileName (arc.File.Name, "sound.dat"))
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{
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format.Channels = 2;
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format.BlockAlign = 2;
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}
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else
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{
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format.Channels = 1;
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format.BlockAlign = 1;
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}
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format.SetBPS();
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return OpenAudioEntry (arc, entry, format);
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}
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public Stream OpenAudioEntry (ArcFile arc, Entry entry, WaveFormat format)
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{
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uint size = arc.File.View.ReadUInt32 (entry.Offset);
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byte[] header;
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using (var buffer = new MemoryStream())
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{
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WaveAudio.WriteRiffHeader (buffer, format, size);
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header = buffer.ToArray();
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}
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var data = arc.File.CreateStream (entry.Offset+4, entry.Size-4);
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return new PrefixStream (header, data);
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}
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}
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internal class TextReader
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{
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IBinaryStream m_input;
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public TextReader (IBinaryStream input)
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{
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m_input = input;
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}
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public List<Entry> GetResourceList (int resource_type)
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{
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List<Entry> dir = null;
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while (m_input.PeekByte() != -1)
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{
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byte op_code = m_input.ReadUInt8();
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if (op_code != 0x68)
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{
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Trace.WriteLine (string.Format ("unknown opcode 0x{0:X2} in text.dat", op_code), "DAT/PIAS");
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return null;
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}
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int type = ReadInt();
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int count = ReadInt();
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Action<uint> action = off => {};
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if (type == resource_type)
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{
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if (!ArchiveFormat.IsSaneCount (count))
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return null;
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dir = new List<Entry> (count);
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action = off => dir.Add (new Entry { Offset = off });
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}
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for (int i = 0; i < count; ++i)
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{
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uint offset = m_input.ReadUInt32();
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action (offset);
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}
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if (type == resource_type)
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break;
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}
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return dir;
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}
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private int ReadInt ()
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{
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int result = m_input.ReadUInt8();
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int code = result & 0xC0;
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if (0 == code)
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return result;
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result = (result & 0x3F) << 8 | m_input.ReadUInt8();
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if (0x40 == code)
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return result;
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result = result << 8 | m_input.ReadUInt8();
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if (0x80 == code)
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return result;
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return result << 8 | m_input.ReadUInt8();
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}
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}
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internal class GraphImageDecoder : BinaryImageDecoder
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{
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public GraphImageDecoder (IBinaryStream input) : base (input, new ImageMetaData { BPP = 16 })
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{
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m_input.ReadInt32(); // skip size
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Info.Width = m_input.ReadUInt16();
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Info.Height = m_input.ReadUInt16();
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}
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protected override ImageData GetImageData ()
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{
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m_input.Position = 8;
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int plane_size = Info.iWidth * Info.iHeight;
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var pixels = new byte[plane_size * 2];
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int dst = 0;
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for (int p = 0; p < plane_size; )
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{
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ushort word = m_input.ReadUInt16();
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if ((word & 0x8000) != 0)
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{
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int count = ((word >> 12) & 7) + 2;
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p += count;
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int offset = (word & 0xFFF) * 2;
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count = Math.Min (count * 2, pixels.Length - dst);
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Binary.CopyOverlapped (pixels, dst - offset, dst, count);
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dst += count;
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}
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else
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{
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LittleEndian.Pack (word, pixels, dst);
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dst += 2;
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++p;
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}
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}
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int stride = Info.iWidth * 2;
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return ImageData.Create (Info, PixelFormats.Bgr555, null, pixels, stride);
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}
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}
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}
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