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109 lines
4.0 KiB
C#
109 lines
4.0 KiB
C#
//! \file ImageMNV.cs
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//! \date Sat Apr 04 00:33:34 2015
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//! \brief M no Violet engine images implementation.
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//
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// Copyright (C) 2015 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;
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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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using GameRes.Compression;
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namespace GameRes.Formats.MnoViolet
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{
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internal class GraMetaData : ImageMetaData
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{
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public int PackedSize;
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public int UnpackedSize;
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public long DataOffset;
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}
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[Export(typeof(ImageFormat))]
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public class GraFormat : ImageFormat
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{
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public override string Tag { get { return "GRA"; } }
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public override string Description { get { return "M no Violet image format"; } }
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public override uint Signature { get { return 0x00617267; } } // 'gra'
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public GraFormat ()
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{
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Signatures = new uint[] { 0x00617267, 0x0073616d, 0 }; // 'gra', 'mas'
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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 NotImplementedException ("GraFormat.Write not implemented");
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}
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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uint sign = file.ReadUInt32();
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uint width = file.ReadUInt32();
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uint height = file.ReadUInt32();
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if (0 == width || width > 0x8000 || 0 == height || height > 0x8000)
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return null;
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int bpp;
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if (0x617267 == sign) // 'gra'
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bpp = 24;
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else if (0x73616D == sign) // 'mas'
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bpp = 8;
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else if (1 == sign)
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bpp = file.ReadInt32();
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else
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return null;
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if (bpp != 32 && bpp != 24 && bpp != 8)
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return null;
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int packed_size = file.ReadInt32();
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int data_size = file.ReadInt32();
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return new GraMetaData
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{
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Width = width,
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Height = height,
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PackedSize = packed_size,
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UnpackedSize = data_size,
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BPP = bpp,
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DataOffset = file.Position,
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};
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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var meta = (GraMetaData)info;
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stream.Position = meta.DataOffset;
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using (var reader = new LzssReader (stream.AsStream, meta.PackedSize, meta.UnpackedSize))
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{
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reader.Unpack();
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int stride = ((int)info.Width*info.BPP/8 + 3) & ~3;
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PixelFormat format;
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if (32 == info.BPP)
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format = PixelFormats.Bgra32;
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else if (24 == info.BPP)
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format = PixelFormats.Bgr24;
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else
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format = PixelFormats.Gray8;
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return ImageData.CreateFlipped (info, format, null, reader.Data, stride);
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}
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}
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}
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}
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