GARbro-mirror/Legacy/PrimeSoft/ImageTHP.cs

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2019-03-04 07:57:55 +08:00
//! \file ImageTHP.cs
//! \date 2019 Feb 28
//! \brief PrimeSoft image format.
//
// Copyright (C) 2019 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;
namespace GameRes.Formats.Prime
{
[Export(typeof(ImageFormat))]
public class ThpFormat : ImageFormat
{
public override string Tag { get { return "THP"; } }
public override string Description { get { return "Prime Soft image format"; } }
public override uint Signature { get { return 0; } }
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
if (!file.Name.HasExtension ("THP"))
return null;
var header = file.ReadHeader (4);
ushort width = header.ToUInt16 (0);
ushort height = header.ToUInt16 (0);
if (width == 0 || width > 0x4000 || height == 0 || height > 0x4000)
return null;
return new ImageMetaData { Width = width, Height = height, BPP = 8 };
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
file.Position = 4;
var palette = ReadPalette (file.AsStream, 0x100, PaletteFormat.Bgr);
int stride = (info.iWidth + 3) & ~3;
var pixels = new byte[info.iHeight * stride];
int length = info.iHeight * info.iWidth;
int dst = 0;
while (dst < length)
{
byte px = file.ReadUInt8();
int next = file.PeekByte();
if (px == next)
{
file.ReadByte();
int count = file.ReadByte() + 1;
while (count --> 0)
{
pixels[dst++] = px;
}
}
else
pixels[dst++] = px;
}
return ImageData.CreateFlipped (info, PixelFormats.Indexed8, palette, pixels, stride);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("ThpFormat.Write not implemented");
}
}
}