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mirror of https://github.com/crskycode/GARbro.git synced 2024-12-23 03:14:13 +08:00

317 lines
10 KiB
C#

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