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(Legacy): THP images.
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Legacy/PrimeSoft/ImageTHP.cs
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83
Legacy/PrimeSoft/ImageTHP.cs
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//! \file ImageTHP.cs
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//! \date 2019 Feb 28
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//! \brief PrimeSoft image format.
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//
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// Copyright (C) 2019 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Windows.Media;
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namespace GameRes.Formats.Prime
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{
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[Export(typeof(ImageFormat))]
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public class ThpFormat : ImageFormat
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{
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public override string Tag { get { return "THP"; } }
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public override string Description { get { return "Prime Soft image format"; } }
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public override uint Signature { get { return 0; } }
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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if (!file.Name.HasExtension ("THP"))
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return null;
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var header = file.ReadHeader (4);
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ushort width = header.ToUInt16 (0);
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ushort height = header.ToUInt16 (0);
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if (width == 0 || width > 0x4000 || height == 0 || height > 0x4000)
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return null;
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return new ImageMetaData { Width = width, Height = height, BPP = 8 };
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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file.Position = 4;
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var palette = ReadPalette (file.AsStream, 0x100, PaletteFormat.Bgr);
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int stride = (info.iWidth + 3) & ~3;
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var pixels = new byte[info.iHeight * stride];
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int length = info.iHeight * info.iWidth;
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int dst = 0;
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while (dst < length)
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{
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byte px = file.ReadUInt8();
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int next = file.PeekByte();
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if (px == next)
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{
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file.ReadByte();
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int count = file.ReadByte() + 1;
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while (count --> 0)
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{
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pixels[dst++] = px;
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}
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}
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else
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pixels[dst++] = px;
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}
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return ImageData.CreateFlipped (info, PixelFormats.Indexed8, palette, pixels, stride);
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new System.NotImplementedException ("ThpFormat.Write not implemented");
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}
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}
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}
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