GARbro-mirror/ArcFormats/Softpal/ImagePGD.cs

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//! \file ImagePGD.cs
//! \date Sat Feb 13 13:56:06 2016
//! \brief Image format used by subsidiaries of Amuse Craft (former Softpal).
//
// Copyright (C) 2016 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.
//
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using System;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using GameRes.Utility;
namespace GameRes.Formats.Softpal
{
[Export(typeof(ImageFormat))]
public class Pgd11Format : ImageFormat
{
public override string Tag { get { return "PGD/11_C"; } }
public override string Description { get { return "Image format used by Softpal subsidiaries"; } }
public override uint Signature { get { return 0x1C4547; } } // 'GE\x1C'
public Pgd11Format ()
{
Extensions = new string[] { "pgd" };
}
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
{
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var header = stream.ReadHeader (0x20);
if (!header.AsciiEqual (0x1C, "11_C"))
return null;
return new ImageMetaData
{
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Width = header.ToUInt32 (0x0C),
Height = header.ToUInt32 (0x10),
OffsetX = header.ToInt32 (4),
OffsetY = header.ToInt32 (8),
BPP = 32,
};
}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
{
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using (var reader = new PgdReader (stream, 0x20))
{
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var planes = reader.Unpack11();
var pixels = new byte[planes.Length];
int plane_size = (int)info.Width*(int)info.Height;
int b_src = 0;
int g_src = b_src+plane_size;
int r_src = g_src+plane_size;
int alpha_src = r_src+plane_size;
int dst = 0;
while (dst < pixels.Length)
{
pixels[dst++] = planes[b_src++];
pixels[dst++] = planes[g_src++];
pixels[dst++] = planes[r_src++];
pixels[dst++] = planes[alpha_src++];
}
return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
}
}
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public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("Pgd11Format.Write not implemented");
}
}
[Export(typeof(ImageFormat))]
public class Pgd00Format : ImageFormat
{
public override string Tag { get { return "PGD/00_C"; } }
public override string Description { get { return "Image format used by Softpal subsidiaries"; } }
public override uint Signature { get { return 0; } }
public Pgd00Format ()
{
Extensions = new string[] { "pgd" };
}
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = stream.ReadHeader (0x24);
if (!header.AsciiEqual (0x18, "00_C"))
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return null;
return new ImageMetaData
{
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Width = header.ToUInt32 (8),
Height = header.ToUInt32 (12),
OffsetX = header.ToInt32 (0),
OffsetY = header.ToInt32 (4),
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BPP = 32,
};
}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
using (var reader = new PgdReader (stream, 0x1C))
{
var data = reader.Unpack00();
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using (var tga = new BinMemoryStream (data, stream.Name))
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{
var tga_info = Tga.ReadMetaData (tga);
if (null == tga_info)
throw new InvalidFormatException();
tga.Position = 0;
return Tga.Read (tga, tga_info);
}
}
}
public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("Pgd00Format.Write not implemented");
}
}
[Export(typeof(ImageFormat))]
public class PgdTgaFormat : TgaFormat
{
public override string Tag { get { return "PGD/TGA"; } }
public override string Description { get { return "Image format used by Softpal subsidiaries"; } }
public override uint Signature { get { return 0; } }
public override bool CanWrite { get { return false; } }
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public PgdTgaFormat ()
{
Extensions = new string[] { "pgd" };
}
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = stream.ReadHeader (0x2A);
int x = header.ToInt32 (0);
int y = header.ToInt32 (4);
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if (Math.Abs (x) > 0x2000 || Math.Abs (y) > 0x2000)
return null;
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uint width = header.ToUInt32 (8);
uint height = header.ToUInt32 (12);
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if (0 == width || 0 == height
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|| width != header.ToUInt16 (0x24)
|| height != header.ToUInt16 (0x26))
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return null;
stream.Position = 0x18;
var tga_info = base.ReadMetaData (stream);
if (null == tga_info)
return null;
tga_info.OffsetX = x;
tga_info.OffsetY = y;
return tga_info;
}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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using (var mem = new StreamRegion (stream.AsStream, 0x18, true))
using (var tga = new BinaryStream (mem, stream.Name))
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return base.Read (tga, info);
}
public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("PgdTgaFormat.Write not implemented");
}
}
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internal class PgdGeMetaData : ImageMetaData
{
public int Method;
}
[Export(typeof(ImageFormat))]
public class PgdGeFormat : ImageFormat
{
public override string Tag { get { return "PGD/GE"; } }
public override string Description { get { return "Image format used by Softpal subsidiaries"; } }
public override uint Signature { get { return 0x204547; } } // 'GE '
public PgdGeFormat ()
{
Extensions = new string[] { "pgd" };
}
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = stream.ReadHeader (0x20);
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return new PgdGeMetaData
{
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Width = header.ToUInt32 (0x0C),
Height = header.ToUInt32 (0x10),
OffsetX = header.ToInt32 (4),
OffsetY = header.ToInt32 (8),
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BPP = 32,
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Method = header.ToUInt16 (0x1C),
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};
}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
using (var reader = new PgdReader (stream, (PgdGeMetaData)info))
{
var pixels = reader.UnpackGE();
return ImageData.Create (info, reader.Format, null, pixels);
}
}
public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("PgdGeFormat.Write not implemented");
}
}
internal class PgdIncMetaData : ImageMetaData
{
public string BaseName;
}
[Export(typeof(ImageFormat))]
public class Pgd3Format : ImageFormat
{
public override string Tag { get { return "PGD3"; } }
public override string Description { get { return "Softpal incremental image format"; } }
public override uint Signature { get { return 0x33444750; } } // 'PGD3'
public Pgd3Format ()
{
Extensions = new string[] { "pgd" };
Signatures = new uint[] { 0x33444750, 0x32444750 }; // 'PGD3', 'PGD2'
}
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
{
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var header = stream.ReadHeader (0x30);
string base_name = header.GetCString (0xE, 0x22);
if (string.IsNullOrEmpty (base_name))
return null;
return new PgdIncMetaData
{
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OffsetX = header.ToUInt16 (4),
OffsetY = header.ToUInt16 (6),
Width = header.ToUInt16 (8),
Height = header.ToUInt16 (0xA),
BPP = header.ToUInt16 (0xC),
BaseName = base_name,
};
}
static readonly Lazy<ImageFormat> PalFormat = new Lazy<ImageFormat> (() => FindByTag ("PGD/GE"));
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
{
var meta = (PgdIncMetaData)info;
string dir_name = VFS.GetDirectoryName (meta.FileName);
string name = VFS.CombinePath (dir_name, meta.BaseName);
PgdGeMetaData base_info;
byte[] image, overlay;
PixelFormat format;
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using (var base_file = VFS.OpenBinaryStream (name))
{
base_info = PalFormat.Value.ReadMetaData (base_file) as PgdGeMetaData;
if (null == base_info)
throw new InvalidFormatException ("Invalid baseline image format");
if (meta.OffsetX + meta.Width > base_info.Width ||
meta.OffsetY + meta.Height > base_info.Height)
throw new InvalidFormatException ("Incompatible baseline image dimensions");
base_info.FileName = name;
using (var reader = new PgdReader (base_file, base_info))
{
image = reader.UnpackGE();
format = reader.Format;
}
}
using (var reader = new PgdReader (stream, meta))
overlay = reader.UnpackOverlay();
int overlay_bpp = meta.BPP / 8;
int base_bpp = format.BitsPerPixel / 8;
int dst = (meta.OffsetY * (int)base_info.Width + meta.OffsetX) * base_bpp;
int gap = (int)(base_info.Width - meta.Width) * base_bpp;
int src = 0;
bool apply_alpha = overlay_bpp == 4 && base_bpp == 4;
for (uint y = 0; y < meta.Height; ++y)
{
for (uint x = 0; x < meta.Width; ++x)
{
image[dst ] ^= overlay[src ];
image[dst+1] ^= overlay[src+1];
image[dst+2] ^= overlay[src+2];
if (apply_alpha)
image[dst+3] ^= overlay[src+3];
dst += base_bpp;
src += overlay_bpp;
}
dst += gap;
}
base_info.FileName = meta.FileName;
return ImageData.Create (base_info, format, null, image);
}
public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("Pgd3Format.Write not implemented");
}
}
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internal sealed class PgdReader : IDisposable
{
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IBinaryStream m_input;
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byte[] m_output;
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int m_width;
int m_height;
int m_bpp;
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int m_method;
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public PixelFormat Format { get; private set; }
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public PgdReader (IBinaryStream input, int position)
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{
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m_input = input;
m_input.Position = position;
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int unpacked_size = m_input.ReadInt32();
m_input.ReadInt32(); // packed_size
m_output = new byte[unpacked_size];
}
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public PgdReader (IBinaryStream input, PgdGeMetaData info) : this (input, 0x20)
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{
m_width = (int)info.Width;
m_height = (int)info.Height;
m_method = info.Method;
}
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public PgdReader (IBinaryStream input, PgdIncMetaData info) : this (input, 0x30)
{
m_width = (int)info.Width;
m_height = (int)info.Height;
m_bpp = info.BPP;
}
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public byte[] UnpackGE ()
{
UnpackGePre();
switch (m_method)
{
case 1: return PostProcess1 (m_output);
case 2: return PostProcess2 (m_output);
case 3: return PostProcess3 (m_output);
default: throw new NotSupportedException ("Not supported PGD compression");
}
}
public byte[] UnpackOverlay ()
{
UnpackGePre();
return PostProcessPal (m_output, 0, m_bpp / 8);
}
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public byte[] Unpack00 ()
{
return Unpack (3000);
}
public byte[] Unpack11 ()
{
return Unpack (0xFFC);
}
byte[] Unpack (int look_behind)
{
int dst = 0;
int ctl = 2;
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while (dst < m_output.Length)
{
ctl >>= 1;
if (1 == ctl)
{
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ctl = m_input.ReadByte() | 0x100;
}
int count;
if (0 != (ctl & 1))
{
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int src = m_input.ReadUInt16();
count = m_input.ReadByte();
if (dst > look_behind)
src += dst - look_behind;
Binary.CopyOverlapped (m_output, src, dst, count);
}
else
{
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count = m_input.ReadByte();
m_input.Read (m_output, dst, count);
}
dst += count;
}
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return m_output;
}
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byte[] UnpackGePre ()
{
int dst = 0;
int ctl = 2;
while (dst < m_output.Length)
{
ctl >>= 1;
if (1 == ctl)
ctl = m_input.ReadByte() | 0x100;
int count;
if (0 != (ctl & 1))
{
int offset = m_input.ReadUInt16();
count = offset & 7;
if (0 == (offset & 8))
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{
count = count << 8 | m_input.ReadByte();
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}
count += 4;
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offset >>= 4;
Binary.CopyOverlapped (m_output, dst - offset, dst, count);
}
else
{
count = m_input.ReadByte();
m_input.Read (m_output, dst, count);
}
dst += count;
}
return m_output;
}
byte[] PostProcess1 (byte[] input)
{
Format = PixelFormats.Bgra32;
var output = new byte[input.Length];
int plane_size = input.Length / 4;
int a_src = 0;
int r_src = plane_size;
int g_src = 2 * plane_size;
int b_src = 3 * plane_size;
int dst = 0;
for (int i = 0; i < plane_size; ++i)
{
output[dst++] = input[b_src+i];
output[dst++] = input[g_src+i];
output[dst++] = input[r_src+i];
output[dst++] = input[a_src+i];
}
return output;
}
byte[] PostProcess2 (byte[] input)
{
Format = PixelFormats.Bgr24;
int stride = m_width * 3;
int segment_size = m_width * m_height / 4;
int src0 = 0;
int src1 = segment_size;
int src2 = segment_size + src1;
var output = new byte[stride * m_height];
int dst = 0;
int[] points = { 0, 1, m_width, m_width + 1 };
for (int y = m_height / 2; y > 0; --y)
{
for (int x = m_width / 2; x > 0; --x)
{
sbyte i0 = (sbyte)input[src0];
sbyte i1 = (sbyte)input[src1];
int b = 226 * i0;
int g = -43 * i0 - 89 * i1;
int r = 179 * i1;
++src0;
++src1;
for (int i = 0; i < points.Length; ++i)
{
int offset = points[i];
int base_value = input[src2+offset] << 7;
offset = dst + 3 * offset;
output[offset++] = Clamp ((base_value + b) >> 7);
output[offset++] = Clamp ((base_value + g) >> 7);
output[offset++] = Clamp ((base_value + r) >> 7);
}
src2 += 2;
dst += 6;
}
src2 += m_width;
dst += stride;
}
return output;
}
static byte Clamp (int val)
{
if (val > 255) val = 255;
else if (val < 0) val = 0;
return (byte)val;
}
byte[] PostProcess3 (byte[] input)
{
int bpp = LittleEndian.ToUInt16 (input, 2);
if (32 == bpp)
Format = PixelFormats.Bgra32;
else if (24 == bpp)
Format = PixelFormats.Bgr24;
else
throw new InvalidFormatException();
m_width = LittleEndian.ToUInt16 (input, 4);
m_height = LittleEndian.ToUInt16 (input, 6);
return PostProcessPal (input, 8, bpp / 8);
}
byte[] PostProcessPal (byte[] input, int src, int pixel_size)
{
int stride = m_width * pixel_size;
var output = new byte[m_height * stride];
int ctl = src;
src += m_height;
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int dst = 0;
for (int row = 0; row < m_height; ++row)
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{
byte c = input[ctl++];
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if (0 != (c & 1))
{
int prev = dst;
Buffer.BlockCopy (input, src, output, dst, pixel_size);
src += pixel_size;
dst += pixel_size;
int count = stride - pixel_size;
while (count --> 0)
{
output[dst++] = (byte)(output[prev++] - input[src++]);
}
}
else if (0 != (c & 2))
{
int prev = dst - stride;
int count = stride;
while (count --> 0)
{
output[dst++] = (byte)(output[prev++] - input[src++]);
}
}
else
{
Buffer.BlockCopy (input, src, output, dst, pixel_size);
dst += pixel_size;
src += pixel_size;
int prev = dst - stride;
int count = stride - pixel_size;
while (count --> 0)
{
output[dst] = (byte)((output[prev++] + output[dst-pixel_size]) / 2 - input[src++]);
++dst;
}
}
}
return output;
}
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#region IDisposable Members
public void Dispose ()
{
}
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#endregion
}
}