GARbro-mirror/ArcFormats/Ikura/ArcGAN.cs
2018-09-03 15:08:15 +04:00

226 lines
8.2 KiB
C#

//! \file ArcGAN.cs
//! \date 2018 Sep 03
//! \brief Ikura animation resource format.
//
// 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;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Linq;
using System.Windows.Media;
using GameRes.Utility;
namespace GameRes.Formats.Ikura
{
internal class GanEntry : Entry
{
public int Index;
public int Id;
public int Ref;
}
[Export(typeof(ArchiveFormat))]
public class GanOpener : ArchiveFormat
{
public override string Tag { get { return "GAN"; } }
public override string Description { get { return "IKURA GDL engine animation resource"; } }
public override uint Signature { get { return 0x4D4E4147; } } // 'GANM0100'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (4, "0100"))
return null;
int count = file.View.ReadInt32 (12);
if (!IsSaneCount (count))
return null;
var base_name = Path.GetFileNameWithoutExtension (file.Name);
uint index_offset = 0x2010;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = new GanEntry {
Name = string.Format ("{0}#{1:D2}", base_name, i),
Type = "image",
Index = i,
Id = file.View.ReadInt32 (index_offset),
Ref = file.View.ReadInt32 (index_offset+4),
Offset = file.View.ReadUInt32 (index_offset+8),
Size = file.View.ReadUInt32 (index_offset+12),
};
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x10;
}
return new GanFrameArchive (file, this, dir);
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
var garc = (GanFrameArchive)arc;
var gent = (GanEntry)entry;
var pixels = garc.GetFrame (gent);
return new Entis.BitmapDecoder (pixels, garc.Info, PixelFormats.Bgr24, null);
}
}
internal class GanFrameArchive : ArcFile
{
public readonly ImageMetaData Info;
byte[][] Frames;
public GanFrameArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir)
: base (arc, impl, dir)
{
Info = new ImageMetaData { Width = 640, Height = 480, BPP = 24 };
Frames = new byte[dir.Count][];
}
public byte[] GetFrame (GanEntry entry)
{
int index = entry.Index;
if (Frames[index] != null)
return Frames[index];
byte[] ref_frame = null;
if (entry.Ref != 0)
{
var ref_entry = Dir.Cast<GanEntry>().FirstOrDefault (e => e.Id == entry.Ref);
if (ref_entry != null && ref_entry != entry)
ref_frame = GetFrame (ref_entry);
}
using (var stream = File.CreateStream (entry.Offset, entry.Size))
{
byte[] pixels;
if (ref_frame != null)
{
pixels = ref_frame.Clone() as byte[];
UnpackRefFrame (stream, pixels);
}
else
{
pixels = new byte[(int)Info.Width * (int)Info.Height * 3];
UnpackKeyFrame (stream, pixels);
}
Frames[index] = pixels;
return pixels;
}
}
void UnpackKeyFrame (IBinaryStream input, byte[] output)
{
int last = -1;
int dst = 0;
while (dst < output.Length)
{
if (input.Read (output, dst, 3) < 3)
break;
int color = output[dst] | output[dst+1] << 8 | output[dst+2] << 16;
dst += 3;
if (color == last)
{
int count = ReadInteger (input);
if (-1 == count)
break;
if (count > 2)
{
count = Math.Min ((count - 2) * 3, output.Length - dst);
Binary.CopyOverlapped (output, dst - 3, dst, count);
dst += count;
}
}
last = color;
}
}
void UnpackRefFrame (IBinaryStream input, byte[] output)
{
int header_size = input.ReadInt32();
if (header_size < 4)
throw new InvalidFormatException();
var header = input.ReadBytes (header_size-4);
using (var chunks = new BinMemoryStream (header))
{
int count = 0;
int last = -1;
int dst = 0;
while (dst < output.Length)
{
int length = ReadInteger (chunks);
if (-1 == length)
break;
while (length --> 0)
{
if (0 == count)
{
input.Read (output, dst, 3);
int color = output[dst] | output[dst+1] << 8 | output[dst+2] << 16;
dst += 3;
if (color == last)
{
count = ReadInteger (input);
if (-1 == count)
return;
if (count > 2)
count -= 2;
else
count = 0;
}
last = color;
}
else
{
count--;
output[dst++] = (byte)last;
output[dst++] = (byte)(last >> 8);
output[dst++] = (byte)(last >> 16);
}
}
length = ReadInteger (chunks);
if (-1 == length)
break;
length = Math.Min (length * 3, output.Length - dst);
dst += length;
}
}
}
static int ReadInteger (IBinaryStream input)
{
int val = input.ReadByte();
if (-1 == val)
return val;
if (val > 0x7F)
{
val = (val & 0x7F) << 8 | input.ReadUInt8();
if (0x7FFF == val)
val = input.ReadInt32();
}
return val;
}
}
}