GARbro-mirror/ArcFormats/Zyx/ArcBDF.cs

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2015-08-23 11:33:37 +08:00
//! \file ArcBDF.cs
//! \date Sun Aug 23 03:17:14 2015
//! \brief Zyx multi-frame image package.
//
// Copyright (C) 2015 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 GameRes.Utility;
namespace GameRes.Formats.Zyx
{
internal class BdfFrame : Entry
{
public int Number;
public int Width;
public int Height;
public bool Incremental;
}
internal class BdfArchive : ArcFile
{
public byte[] FirstFrame;
public BdfArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir)
: base (arc, impl, dir)
{
}
public byte[] ReadFrame (BdfFrame frame)
{
byte[] pixels;
if (!frame.Incremental)
{
if (null != FirstFrame && 0 == frame.Number)
return FirstFrame;
pixels = new byte[frame.Width * frame.Height * 3];
using (var input = File.CreateStream (frame.Offset, frame.Size))
DecodeFrame (input, pixels);
if (null == FirstFrame && 0 == frame.Number)
FirstFrame = pixels;
}
else
{
if (null == FirstFrame)
{
var base_frame = Dir.First() as BdfFrame;
FirstFrame = new byte[base_frame.Width * base_frame.Height * 3];
using (var input = File.CreateStream (base_frame.Offset, base_frame.Size))
DecodeFrame (input, FirstFrame);
}
pixels = FirstFrame.Clone() as byte[];
int i = 1;
foreach (var entry in Dir.Skip(1).Cast<BdfFrame>())
{
if (i++ > frame.Number)
break;
using (var input = File.CreateStream (entry.Offset, entry.Size))
DecodeFrame (input, pixels, entry.Incremental);
}
}
return pixels;
}
private void DecodeFrame (Stream input, byte[] output, bool incremental = false)
{
int v2 = incremental ? 6 : 4;
int dst = 0;
while (dst < output.Length)
{
int count, offset;
int cmd = input.ReadByte();
if (-1 == cmd)
break;
switch (cmd)
{
case 0:
{
int src = dst-3;
count = input.ReadByte();
for (int i = 0; i < count; ++i)
{
output[dst++] = output[src];
output[dst++] = output[src+1];
output[dst++] = output[src+2];
}
break;
}
case 1:
{
count = 3 * input.ReadByte();
offset = 3 * input.ReadByte();
int src = dst - offset;
Binary.CopyOverlapped (output, src, dst, count);
dst += count;
break;
}
case 2:
{
count = 3 * input.ReadByte();
offset = input.ReadByte();
offset |= input.ReadByte() << 8;
offset *= 3;
int src = dst - offset;
Binary.CopyOverlapped (output, src, dst, count);
dst += count;
break;
}
case 3:
{
offset = 3 * input.ReadByte();
int src = dst - offset;
output[dst++] = output[src++];
output[dst++] = output[src++];
output[dst++] = output[src++];
break;
}
case 4:
{
offset = input.ReadByte();
offset |= input.ReadByte() << 8;
offset *= 3;
int src = dst - offset;
output[dst++] = output[src++];
output[dst++] = output[src++];
output[dst++] = output[src++];
break;
}
default:
if (v2 < 5 || cmd > 6)
{
count = (cmd - v2) * 3;
input.Read (output, dst, count);
dst += count;
}
else
{
if (5 == cmd)
{
count = input.ReadByte();
}
else
{
count = input.ReadByte();
count |= input.ReadByte() << 8;
}
dst += 3 * count;
}
break;
}
}
}
}
[Export(typeof(ArchiveFormat))]
public class BdfOpener : ArchiveFormat
{
public override string Tag { get { return "BDF"; } }
public override string Description { get { return "Zyx multi-frame image package"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (0);
if (count <= 0 || count > 100)
return null;
int first_offset = file.View.ReadInt32 (4);
if (0 != first_offset)
return null;
string base_name = Path.GetFileNameWithoutExtension (file.Name);
int base_offset = 4 + count * 0x1C;
int index_offset = 4;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = new BdfFrame {
Number = i,
Name = string.Format ("{0}#{1:D2}.tga", base_name, i),
Type = "image",
Offset = base_offset + file.View.ReadUInt32 (index_offset),
Size = file.View.ReadUInt32 (index_offset+4),
Incremental = 0 != file.View.ReadInt32 (index_offset+8),
Width = file.View.ReadInt32 (index_offset+0x14),
Height = file.View.ReadInt32 (index_offset+0x18),
};
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x1C;
}
return new BdfArchive (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var bdf = arc as BdfArchive;
var frame = entry as BdfFrame;
if (null == bdf || null == frame)
return arc.File.CreateStream (entry.Offset, entry.Size);
var pixels = bdf.ReadFrame (frame);
var header = new byte[0x12];
header[2] = 2;
if (frame.Incremental)
frame = bdf.Dir.First() as BdfFrame;
LittleEndian.Pack ((ushort)frame.Width, header, 0xc);
LittleEndian.Pack ((ushort)frame.Height, header, 0xe);
header[0x10] = 24;
header[0x11] = 0x20;
return new PrefixStream (header, new MemoryStream (pixels));
}
}
}