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//! \file ArcPACK.cs
//! \date 2018 Feb 03
//! \brief Lune Adv Game resource archive.
//
// Copyright (C) 2018 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.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using GameRes.Utility;
// [001110][Lune] Wasurekaketa Kokoro no Kakera
namespace GameRes.Formats.Lune
{
#if DEBUG
[Export(typeof(ArchiveFormat))]
#endif
public class PackOpener : ArchiveFormat
{
public override string Tag { get { return "PACK/LUNE"; } }
public override string Description { get { return "Lune Adv Game engine resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public PackOpener ()
{
Extensions = new string[] { "dat", "wda" };
}
public override ArcFile TryOpen (ArcView file)
{
uint first_offset = file.View.ReadUInt32 (0);
if (first_offset <= 8 || first_offset >= file.MaxOffset || 0 != (first_offset & 7))
return null;
int count = (int)(first_offset / 8);
if (!IsSaneCount (count))
return null;
var base_name = Path.GetFileNameWithoutExtension (file.Name);
string type = file.Name.HasExtension (".wda") ? "audio"
: file.Name.HasExtension (".scr") ? "script"
: "image";
uint index_offset = 0;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = new Entry {
Name = string.Format ("{0}#{1:D5}", base_name, i),
Type = type,
Offset = file.View.ReadUInt32 (index_offset),
Size = file.View.ReadUInt32 (index_offset+4),
};
if (entry.Offset < first_offset || !entry.CheckPlacement (file.MaxOffset))
return null;
if (entry.Size > 0)
dir.Add (entry);
index_offset += 8;
}
if (dir.Count == 0 || dir[dir.Count-1].Offset + dir[dir.Count-1].Size != file.MaxOffset)
return null;
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if (!arc.File.Name.HasExtension (".wda"))
return base.OpenEntry (arc, entry);
var format = new WaveFormat {
FormatTag = 1,
Channels = 1,
SamplesPerSecond = 22050,
AverageBytesPerSecond = 44100,
BlockAlign = 2,
BitsPerSample = 16,
};
byte[] wav_header;
using (var output = new MemoryStream (0x2C))
{
WaveAudio.WriteRiffHeader (output, format, entry.Size);
wav_header = output.ToArray();
}
var pcm_data = arc.File.CreateStream (entry.Offset, entry.Size);
return new PrefixStream (wav_header, pcm_data);
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
var input = arc.File.CreateStream (entry.Offset, entry.Size);
if (arc.File.Name.HasExtension (".msk"))
return new PackMaskDecoder (input);
else
return new PackImageDecoder (input);
}
}
internal class PackImageDecoder : IImageDecoder
{
protected IBinaryStream m_input;
protected byte[] m_output;
private ImageData m_image;
public Stream Source { get { m_input.Position = 0; return m_input.AsStream; } }
public ImageFormat SourceFormat { get { return null; } }
public PixelFormat Format { get; private set; }
public ImageMetaData Info { get; private set; }
public ImageData Image {
get {
if (null == m_image)
{
Unpack();
m_image = ImageData.Create (Info, Format, null, m_output);
}
return m_image;
}
}
public PackImageDecoder (IBinaryStream input) : this (input, PixelFormats.Bgr24) { }
protected PackImageDecoder (IBinaryStream input, PixelFormat format)
{
m_input = input;
uint width = input.ReadUInt16();
uint height = input.ReadUInt16();
Format = format;
Info = new ImageMetaData { Width = width, Height = height, BPP = format.BitsPerPixel };
m_output = new byte[(int)width * (int)height * Info.BPP / 8];
}
protected virtual void Unpack ()
{
m_input.Position = 4;
var data = ReadDataBytes();
using (var bits = new MsbBitStream (m_input.AsStream, true))
{
int src = 0;
m_output[0] = data[src++];
for (int dst = 1; dst < m_output.Length; ++dst)
{
int ctl = bits.GetBits (2);
byte v;
if (0 == ctl)
{
v = data[src++];
}
else
{
v = m_output[dst-3];
if (ctl == 2)
{
if (bits.GetNextBit() != 0)
v -= 1;
else
v += 1;
}
else if (ctl == 3)
{
ctl = bits.GetBits (2);
if (ctl == 2)
{
if (bits.GetNextBit() != 0)
v -= 3;
else
v += 3;
}
else if (ctl == 3)
{
ctl = bits.GetBits (2);
if (ctl == 2)
{
if (bits.GetNextBit() != 0)
v -= 5;
else
v += 5;
}
else if (ctl == 3)
{
switch (bits.GetBits (2))
{
case 3: v -= 7; break;
case 2: v += 7; break;
case 1: v -= 6; break;
default: v += 6; break;
}
}
else if (ctl == 1)
v -= 4;
else
v += 4;
}
else if (ctl == 1)
v -= 2;
else
v += 2;
}
}
m_output[dst] = v;
}
}
}
protected byte[] ReadDataBytes ()
{
uint data_pos = m_input.ReadUInt32();
long ctl_pos = m_input.Position;
m_input.Seek (data_pos, SeekOrigin.Current);
var data = m_input.ReadBytes ((int)(m_input.Length - data_pos));
if (0 == data.Length)
throw new InvalidFormatException();
m_input.Position = ctl_pos;
return data;
}
bool m_disposed = false;
public void Dispose ()
{
if (!m_disposed)
{
m_input.Dispose();
m_disposed = true;
}
}
}
internal sealed class PackMaskDecoder : PackImageDecoder
{
public PackMaskDecoder (IBinaryStream input) : base (input, PixelFormats.Gray8) { }
protected override void Unpack ()
{
m_input.Position = 4;
var data = ReadDataBytes();
using (var bits = new MsbBitStream (m_input.AsStream, true))
{
int stride = (int)Info.Width;
int src = 0;
int dst = 0;
byte init_value = data[src++];
m_output[dst++] = init_value;
int bit_count = 0;
int y = 0;
int x = 1;
while (dst < m_output.Length)
{
int ctl = bits.GetBits (2);
if (0 == ctl)
{
int count;
if (bit_count > 0)
count = bits.GetBits (14 - bit_count);
else
count = bits.GetBits (6);
while (count --> 0 && dst < m_output.Length)
{
if (y == 0 || x + 1 == stride)
m_output[dst] = init_value;
else
m_output[dst] = m_output[dst - stride + 1];
++dst;
if (++x == stride)
{
x = 0;
++y;
}
}
bit_count = 0;
continue;
}
else if (1 == ctl)
{
bit_count += 2;
if (0 == x)
m_output[dst] = init_value;
else
m_output[dst] = m_output[dst - stride - 1];
}
else if (2 == ctl)
{
bit_count += 2;
m_output[dst] = data[src++];
}
else
{
bit_count += 3;
if (bits.GetNextBit() != 0)
m_output[dst] = m_output[dst - stride];
else
m_output[dst] = m_output[dst-1];
}
++dst;
if (++x == stride)
{
x = 0;
++y;
}
if (bit_count >= 8)
bit_count -= 8;
}
}
const byte max = 0x20; // System.Linq.Enumerable.Max (m_output);
if (max != 0 && max != 0xFF)
{
for (int i = 0; i < m_output.Length; ++i)
m_output[i] = (byte)(m_output[i] * 0xFF / max);
}
}
}
}