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//! \file ImageG24.cs
//! \date 2017 Dec 07
//! \brief Sceplayer engine image format.
//
// Copyright (C) 2017 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.Compression;
namespace GameRes.Formats.Sceplayer
{
internal class G24MetaData : ImageMetaData
{
public byte Type;
}
[Export(typeof(ImageFormat))]
public class G24AFormat : ImageFormat
{
public override string Tag { get { return "G24A"; } }
public override string Description { get { return "Sceplayer image format"; } }
public override uint Signature { get { return 0x61343267; } } // 'g24a'
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x10);
return new ImageMetaData {
Width = header.ToUInt32 (8),
Height = header.ToUInt32 (0xC),
BPP = 24,
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
file.Position = 0x2C;
var reader = new G24Reader (file);
var pixels = reader.Unpack();
byte b = pixels[0];
byte g = pixels[1];
byte r = pixels[2];
for (int i = 3; i < pixels.Length; i += 3)
{
pixels[i ] += b;
pixels[i+1] += g;
pixels[i+2] += r;
b = pixels[i ];
g = pixels[i+1];
r = pixels[i+2];
}
return ImageData.CreateFlipped (info, PixelFormats.Bgr24, null, pixels, (int)info.Width * 3);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("G24AFormat.Write not implemented");
}
}
[Export(typeof(ImageFormat))]
public class G2408Format : ImageFormat
{
public override string Tag { get { return "G2408A"; } }
public override string Description { get { return "Sceplayer bitmap format"; } }
public override uint Signature { get { return 0x30343267; } } // 'g240'
public G2408Format ()
{
Extensions = new string[] { "g2408a", "g2408b" };
}
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x14);
byte type = header[5];
if (!header.AsciiEqual ("g2408") || (type != 'a' && type != 'b'))
return null;
return new G24MetaData {
Width = header.ToUInt32 (0xC),
Height = header.ToUInt32 (0x10),
BPP = 8,
Type = type
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var meta = (G24MetaData)info;
file.Position = 0x30;
var reader = new G24Reader (file);
var pixels = reader.Unpack();
if ('a' == meta.Type)
{
byte p = pixels[pixels.Length-1];
for (int i = pixels.Length-2; i >= 0; --i)
{
p += pixels[i];
pixels[i] = p;
}
}
return ImageData.CreateFlipped (info, PixelFormats.Gray8, null, pixels, (int)info.Width);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("G2408BFormat.Write not implemented");
}
}
internal class G24Reader
{
IBinaryStream m_input;
public G24Reader (IBinaryStream input)
{
m_input = input;
}
public byte[] Unpack ()
{
int signature = m_input.ReadInt32();
int unpacked_size = m_input.ReadInt32();
var output = new byte[unpacked_size];
switch (signature)
{
case 0x6572: // 're'
UnpackRle (output);
break;
case 0x656C: // 'le'
UnpackLzss (output);
break;
default:
throw new InvalidFormatException();
}
return output;
}
void UnpackLzss (byte[] output)
{
using (var input = new LzssStream (m_input.AsStream, LzssMode.Decompress, true))
input.Read (output, 0, output.Length);
}
void UnpackRle (byte[] output)
{
int dst = 0;
while (m_input.PeekByte() != -1 && dst < output.Length)
{
byte ctl = m_input.ReadUInt8();
if (ctl != 0xF0)
{
output[dst++] = (byte)ctl;
}
else
{
byte count = m_input.ReadUInt8();
if (0 == count)
{
output[dst++] = (byte)ctl;
}
else if (1 == count)
{
output[dst++] = 0xF0;
}
else if (2 == count)
{
output[dst++] = 0xF0;
output[dst++] = 0xF0;
}
else
{
byte v = m_input.ReadUInt8();
while (count --> 0)
output[dst++] = v;
}
}
}
}
}
}