mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-30 23:04:12 +08:00
284 lines
10 KiB
C#
284 lines
10 KiB
C#
//! \file ImageGR2.cs
|
|
//! \date Tue Jul 21 03:54:51 2015
|
|
//! \brief AdvSys engine image format.
|
|
//
|
|
// 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.ComponentModel.Composition;
|
|
using System.IO;
|
|
using System.Windows.Media;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.AdvSys
|
|
{
|
|
[Export(typeof(ImageFormat))]
|
|
public class Gr2Format : ImageFormat
|
|
{
|
|
public override string Tag { get { return "GR2"; } }
|
|
public override string Description { get { return "AdvSys engine image format"; } }
|
|
public override uint Signature { get { return 0x5F325247; } } // 'GR2_'
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream stream)
|
|
{
|
|
var header = stream.ReadHeader (0x10);
|
|
return new ImageMetaData
|
|
{
|
|
Width = header.ToUInt16 (4),
|
|
Height = header.ToUInt16 (6),
|
|
BPP = header.ToInt16 (12) * 8
|
|
};
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream stream, ImageMetaData info)
|
|
{
|
|
stream.Position = 0x10;
|
|
int stride = GetStride (info);
|
|
var pixels = new byte[stride * info.Height];
|
|
if (pixels.Length != stream.Read (pixels, 0, pixels.Length))
|
|
throw new InvalidFormatException ("Unexpected end of file");
|
|
PixelFormat format;
|
|
switch (info.BPP)
|
|
{
|
|
case 32: format = PixelFormats.Bgra32; break;
|
|
case 24: format = PixelFormats.Bgr24; break;
|
|
case 16: format = PixelFormats.Bgr555; break;
|
|
default: throw new NotSupportedException ("Not supported image bitdepth");
|
|
}
|
|
return ImageData.Create (info, format, null, pixels, stride);
|
|
}
|
|
|
|
internal int GetStride (ImageMetaData info)
|
|
{
|
|
return ((int)info.Width * info.BPP/8 + 3) & ~3;
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new System.NotImplementedException ("Gr2Format.Write not implemented");
|
|
}
|
|
}
|
|
|
|
internal class PolaMetaData : ImageMetaData
|
|
{
|
|
public uint DataOffset;
|
|
public int UnpackedSize;
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class PolaFormat : Gr2Format
|
|
{
|
|
public override string Tag { get { return "GR2/Pola"; } }
|
|
public override string Description { get { return "AdvSys engine compressed image format"; } }
|
|
public override uint Signature { get { return 0x6C6F502A; } } // '*Pola*'
|
|
|
|
public PolaFormat ()
|
|
{
|
|
Extensions = new string[] { "gr2" };
|
|
}
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream stream)
|
|
{
|
|
var header = stream.ReadHeader (20);
|
|
if (!header.AsciiEqual ("*Pola"))
|
|
return null;
|
|
bool new_version = header.AsciiEqual (5, "* ");
|
|
uint data_offset = new_version ? 20u : 13u;
|
|
int unpacked_size = header.ToInt32 (8);
|
|
stream.Position = data_offset;
|
|
var reader = new PolaReader (stream, 64);
|
|
reader.Unpack();
|
|
using (var temp = BinaryStream.FromArray (reader.Data, stream.Name))
|
|
{
|
|
var info = base.ReadMetaData (temp);
|
|
if (null == info)
|
|
return null;
|
|
if (!new_version)
|
|
unpacked_size = 0x10 + GetStride (info) * (int)info.Height;
|
|
return new PolaMetaData
|
|
{
|
|
Width = info.Width,
|
|
Height = info.Height,
|
|
BPP = info.BPP,
|
|
DataOffset = data_offset,
|
|
UnpackedSize = unpacked_size,
|
|
};
|
|
}
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream stream, ImageMetaData info)
|
|
{
|
|
var meta = (PolaMetaData)info;
|
|
stream.Position = meta.DataOffset;
|
|
var reader = new PolaReader (stream, meta.UnpackedSize);
|
|
reader.Unpack();
|
|
using (var temp = BinaryStream.FromArray (reader.Data, stream.Name))
|
|
return base.Read (temp, info);
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new System.NotImplementedException ("PolaFormat.Write not implemented");
|
|
}
|
|
}
|
|
|
|
internal sealed class PolaReader
|
|
{
|
|
IBinaryStream m_input;
|
|
byte[] m_output;
|
|
|
|
public byte[] Data { get { return m_output; } }
|
|
|
|
public PolaReader (IBinaryStream input, int unpacked_size)
|
|
{
|
|
m_input = input;
|
|
m_output = new byte[unpacked_size+2];
|
|
}
|
|
|
|
public void Unpack ()
|
|
{
|
|
NextBit();
|
|
int dst = 0;
|
|
while (dst < m_output.Length-2)
|
|
{
|
|
if (0 != NextBit())
|
|
{
|
|
m_output[dst++] = m_input.ReadUInt8();
|
|
continue;
|
|
}
|
|
int offset, count = 0;
|
|
|
|
if (0 != NextBit())
|
|
{
|
|
offset = m_input.ReadUInt8() - 256;
|
|
|
|
if (0 == NextBit())
|
|
{
|
|
count += 256;
|
|
}
|
|
if (0 == NextBit())
|
|
{
|
|
offset -= 512;
|
|
if (0 == NextBit())
|
|
{
|
|
count *= 2;
|
|
if (0 == NextBit())
|
|
count += 256;
|
|
offset -= 512;
|
|
if (0 == NextBit())
|
|
{
|
|
count *= 2;
|
|
if (0 == NextBit())
|
|
count += 256;
|
|
offset -= 1024;
|
|
if (0 == NextBit())
|
|
{
|
|
offset -= 2048;
|
|
count *= 2;
|
|
if (0 == NextBit())
|
|
count += 256;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
offset -= count;
|
|
if (0 != NextBit())
|
|
count = 3;
|
|
else if (0 != NextBit())
|
|
count = 4;
|
|
else if (0 != NextBit())
|
|
count = 5;
|
|
else if (0 != NextBit())
|
|
count = 6;
|
|
else if (0 != NextBit())
|
|
{
|
|
if (0 != NextBit())
|
|
count = 8;
|
|
else
|
|
count = 7;
|
|
}
|
|
else if (0 == NextBit())
|
|
{
|
|
count = 9;
|
|
if (0 != NextBit())
|
|
count += 4;
|
|
if (0 != NextBit())
|
|
count += 2;
|
|
if (0 != NextBit())
|
|
++count;
|
|
}
|
|
else
|
|
{
|
|
count = m_input.ReadUInt8() + 17;
|
|
}
|
|
if (dst + count > m_output.Length)
|
|
count = m_output.Length - dst;
|
|
Binary.CopyOverlapped (m_output, dst + offset, dst, count);
|
|
dst += count;
|
|
}
|
|
else
|
|
{
|
|
offset = m_input.ReadUInt8() - 256;
|
|
if (0 == NextBit())
|
|
{
|
|
if (offset != -1)
|
|
{
|
|
int src = dst + offset;
|
|
m_output[dst++] = m_output[src++];
|
|
m_output[dst++] = m_output[src++];
|
|
}
|
|
else if (0 == NextBit())
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
offset -= 256;
|
|
if (0 == NextBit())
|
|
offset -= 1024;
|
|
if (0 == NextBit())
|
|
offset -= 512;
|
|
if (0 == NextBit())
|
|
offset -= 256;
|
|
int src = dst + offset;
|
|
m_output[dst++] = m_output[src++];
|
|
m_output[dst++] = m_output[src++];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int m_bits = 2;
|
|
|
|
int NextBit ()
|
|
{
|
|
int bit = m_bits & 1;
|
|
m_bits >>= 1;
|
|
if (1 == m_bits)
|
|
{
|
|
m_bits = m_input.ReadUInt16() | 0x10000;
|
|
}
|
|
return bit;
|
|
}
|
|
}
|
|
}
|