GARbro-mirror/ArcFormats/Softpal/ImagePGD.cs

125 lines
4.6 KiB
C#

//! \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.
//
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" };
}
public override ImageMetaData ReadMetaData (Stream stream)
{
var header = new byte[0x20];
if (header.Length != stream.Read (header, 0, header.Length))
return null;
if (!Binary.AsciiEqual (header, 0x1C, "11_C"))
return null;
return new ImageMetaData
{
Width = LittleEndian.ToUInt32 (header, 0x0C),
Height = LittleEndian.ToUInt32 (header, 0x10),
OffsetX = LittleEndian.ToInt32 (header, 4),
OffsetY = LittleEndian.ToInt32 (header, 8),
BPP = 32,
};
}
public override ImageData Read (Stream stream, ImageMetaData info)
{
stream.Position = 0x20;
using (var reader = new ArcView.Reader (stream))
{
int unpacked_size = reader.ReadInt32();
reader.ReadInt32(); // packed_size
var planes = Unpack (reader, unpacked_size);
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);
}
}
byte[] Unpack (BinaryReader input, int unpacked_size)
{
var output = new byte[unpacked_size];
int dst = 0;
int ctl = 2;
while (dst < output.Length)
{
ctl >>= 1;
if (1 == ctl)
{
ctl = input.ReadByte() | 0x100;
}
int count;
if (0 != (ctl & 1))
{
int src = input.ReadUInt16();
count = input.ReadByte();
if (dst >= 0xFFC)
src += dst - 0xFFC;
Binary.CopyOverlapped (output, src, dst, count);
}
else
{
count = input.ReadByte();
input.Read (output, dst, count);
}
dst += count;
}
return output;
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("Pgd11Format.Write not implemented");
}
}
}