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165 lines
5.5 KiB
C#
165 lines
5.5 KiB
C#
//! \file Image.cs
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//! \date Tue Jul 01 11:29:52 2014
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//! \brief image class.
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//
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// Copyright (C) 2014 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.IO;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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namespace GameRes
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{
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public class ImageMetaData
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{
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public uint Width { get; set; }
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public uint Height { get; set; }
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public int OffsetX { get; set; }
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public int OffsetY { get; set; }
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public int BPP { get; set; }
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}
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public class ImageEntry : Entry
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{
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public override string Type { get { return "image"; } }
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}
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public class ImageData
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{
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private BitmapSource m_bitmap;
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public BitmapSource Bitmap { get { return m_bitmap; } }
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public uint Width { get { return (uint)m_bitmap.PixelWidth; } }
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public uint Height { get { return (uint)m_bitmap.PixelHeight; } }
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public int OffsetX { get; set; }
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public int OffsetY { get; set; }
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public int BPP { get { return m_bitmap.Format.BitsPerPixel; } }
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public static double DefaultDpiX { get; set; }
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public static double DefaultDpiY { get; set; }
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static ImageData ()
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{
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SetDefaultDpi (96, 96);
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}
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public static void SetDefaultDpi (double x, double y)
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{
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DefaultDpiX = x;
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DefaultDpiY = y;
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}
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public ImageData (BitmapSource data, ImageMetaData meta)
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{
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m_bitmap = data;
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OffsetX = meta.OffsetX;
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OffsetY = meta.OffsetY;
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}
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public ImageData (BitmapSource data, int x = 0, int y = 0)
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{
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m_bitmap = data;
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OffsetX = x;
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OffsetY = y;
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}
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public static ImageData Create (ImageMetaData info, PixelFormat format, BitmapPalette palette,
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byte[] pixel_data)
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{
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int stride = (int)info.Width*((format.BitsPerPixel+7)/8);
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var bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height, DefaultDpiX, DefaultDpiY,
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format, palette, pixel_data, stride);
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bitmap.Freeze();
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return new ImageData (bitmap, info);
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}
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}
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public abstract class ImageFormat : IResource
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{
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public override string Type { get { return "image"; } }
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public abstract ImageMetaData ReadMetaData (Stream file);
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public abstract ImageData Read (Stream file, ImageMetaData info);
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public abstract void Write (Stream file, ImageData bitmap);
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public static ImageData Read (Stream file)
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{
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bool need_dispose = false;
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try
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{
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if (!file.CanSeek)
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{
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var stream = new MemoryStream();
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file.CopyTo (stream);
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file = stream;
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need_dispose = true;
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}
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var format = FindFormat (file);
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if (null == format)
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return null;
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file.Position = 0;
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return format.Item1.Read (file, format.Item2);
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}
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finally
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{
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if (need_dispose)
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file.Dispose();
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}
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}
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public static System.Tuple<ImageFormat, ImageMetaData> FindFormat (Stream file)
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{
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uint signature = FormatCatalog.ReadSignature (file);
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for (;;)
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{
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var range = FormatCatalog.Instance.LookupSignature<ImageFormat> (signature);
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foreach (var impl in range)
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{
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try
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{
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file.Position = 0;
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ImageMetaData metadata = impl.ReadMetaData (file);
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if (null != metadata)
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return new System.Tuple<ImageFormat, ImageMetaData> (impl, metadata);
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}
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catch { }
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}
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if (0 == signature)
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break;
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signature = 0;
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}
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return null;
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}
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public override Entry CreateEntry ()
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{
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return new ImageEntry();
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}
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public bool IsBuiltin
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{
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get { return this.GetType().Assembly == typeof(ImageFormat).Assembly; }
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}
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}
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}
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