mirror of
https://github.com/crskycode/GARbro.git
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623 lines
24 KiB
C#
623 lines
24 KiB
C#
//! \file ImageCRX.cs
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//! \date Mon Jun 15 15:14:59 2015
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//! \brief Circus image format.
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//
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// Copyright (C) 2015-2016 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;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using GameRes.Compression;
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using GameRes.Utility;
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namespace GameRes.Formats.Circus
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{
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internal class CrxMetaData : ImageMetaData
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{
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public int Compression;
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public int CompressionFlags;
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public int Colors;
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public int Mode;
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}
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[Export(typeof(ImageFormat))]
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public class CrxFormat : ImageFormat
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{
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public override string Tag { get { return "CRX"; } }
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public override string Description { get { return "Circus image format"; } }
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public override uint Signature { get { return 0x47585243; } } // 'CRXG'
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public override bool CanWrite { get { return true; } }
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = stream.ReadHeader (0x14);
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int compression = header.ToUInt16 (0xC);
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if (compression < 1 || compression > 3)
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return null;
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int depth = header.ToInt16 (0x10);
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var info = new CrxMetaData
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{
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Width = header.ToUInt16 (8),
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Height = header.ToUInt16 (10),
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OffsetX = header.ToInt16 (4),
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OffsetY = header.ToInt16 (6),
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BPP = 0 == depth ? 24 : 1 == depth ? 32 : 8,
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Compression = compression,
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CompressionFlags = header.ToUInt16 (0xE),
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Colors = depth,
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Mode = header.ToUInt16 (0x12),
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};
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return info;
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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using (var reader = new Reader (stream, (CrxMetaData)info))
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{
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reader.Unpack();
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return ImageData.Create (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
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}
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}
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public override void Write (Stream file, ImageData image)
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{
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var header = new byte[0x14];
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var depth = (short)(24 == image.BPP ? 0 : 32 == image.BPP ? 1 : 2);
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var compression = (ushort)3;
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var flags = (ushort)17;
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var mode = (ushort)0;
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using (var memeStream = new MemoryStream (header))
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{
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using (var binaryWriter = new BinaryWriter (memeStream))
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{
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binaryWriter.Write (Signature);
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binaryWriter.Write ((ushort)image.OffsetX);
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binaryWriter.Write ((ushort)image.OffsetY);
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binaryWriter.Write ((ushort)image.Width);
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binaryWriter.Write ((ushort)image.Height);
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binaryWriter.Write (compression);
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binaryWriter.Write (flags);
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binaryWriter.Write (depth);
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binaryWriter.Write (mode);
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}
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}
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var metaData = ReadMetaData (BinaryStream.FromArray (header,""));
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var bitmap = image.Bitmap;
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var pixelFormat = CheckFormat (image.BPP);
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int stride = (int)(image.Width * pixelFormat.BitsPerPixel / 8 + 3) & ~3;
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if (pixelFormat != bitmap.Format)
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{
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var converted_bitmap = new FormatConvertedBitmap ();
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converted_bitmap.BeginInit ();
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converted_bitmap.Source = image.Bitmap;
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converted_bitmap.DestinationFormat = pixelFormat;
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converted_bitmap.EndInit ();
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bitmap = converted_bitmap;
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}
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var data = new byte[image.Height * stride];
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var row_data = new byte[stride];
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var rect = new Int32Rect (0, 0, (int)image.Width, 1);
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for (uint row = 0; row < image.Height; ++row)
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{
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bitmap.CopyPixels (rect, row_data, stride, 0);
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rect.Y++;
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row_data.CopyTo (data, row * stride);
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}
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using (var binaryWriter = new BinaryWriter (file))
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{
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binaryWriter.Write (header);
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using (var writer = new Writer (data, binaryWriter,(CrxMetaData)metaData))
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{
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writer.Write ();
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}
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}
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}
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private static PixelFormat CheckFormat (int bpp)
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{
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switch (bpp)
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{
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case 24: return PixelFormats.Bgr24;
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case 32: return PixelFormats.Bgra32;
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case 8: return PixelFormats.Indexed8;
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default: throw new InvalidFormatException ();
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}
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}
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internal sealed class Reader : IDisposable
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{
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IBinaryStream m_input;
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byte[] m_output;
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int m_width;
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int m_height;
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int m_stride;
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int m_bpp;
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int m_compression;
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int m_flags;
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int m_mode;
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public byte[] Data { get { return m_output; } }
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public PixelFormat Format { get; private set; }
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public BitmapPalette Palette { get; private set; }
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public int Stride { get { return m_stride; } }
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public Reader (IBinaryStream input, CrxMetaData info)
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{
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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m_bpp = info.BPP;
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m_compression = info.Compression;
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m_flags = info.CompressionFlags;
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m_mode = info.Mode;
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Format = CheckFormat (m_bpp);
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m_stride = (m_width * m_bpp / 8 + 3) & ~3;
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m_output = new byte[m_height*m_stride];
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m_input = input;
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m_input.Position = 0x14;
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if (8 == m_bpp)
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ReadPalette (info.Colors);
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}
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private void ReadPalette (int colors)
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{
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int color_size = 0x102 == colors ? 4 : 3;
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if (colors > 0x100)
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{
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colors = 0x100;
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}
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int palette_size = colors * color_size;
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var palette_data = new byte[palette_size];
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if (palette_size != m_input.Read (palette_data, 0, palette_size))
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throw new InvalidFormatException();
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var palette = new Color[colors];
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int color_pos = 0;
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for (int i = 0; i < palette.Length; ++i)
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{
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byte r = palette_data[color_pos];
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byte g = palette_data[color_pos+1];
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byte b = palette_data[color_pos+2];
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if (0xff == b && 0 == g && 0xff == r)
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g = 0xff;
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palette[i] = Color.FromRgb (r, g, b);
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color_pos += color_size;
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}
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Palette = new BitmapPalette (palette);
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}
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public void Unpack (bool is_diff = false)
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{
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if (m_compression >= 3)
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{
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int count = m_input.ReadInt32();
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m_input.Seek (count * 0x10, SeekOrigin.Current);
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}
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if (0 != (m_flags & 0x10))
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{
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m_input.ReadInt32(); // compressed_size
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}
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if (1 == m_compression)
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UnpackV1();
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else
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UnpackV2();
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if (32 == m_bpp && m_mode != 1)
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{
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int alpha_flip = 2 == m_mode ? 0 : 0xFF;
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int line = 0;
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for (int h = 0; h < m_height; h++)
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{
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for (int w = 0; w < m_width; w++)
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{
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int pixel = line + w * 4;
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var alpha = m_output[pixel];
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var b = m_output[pixel+1];
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var g = m_output[pixel+2];
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var r = m_output[pixel+3];
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m_output[pixel] = b;
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m_output[pixel+1] = g;
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m_output[pixel+2] = r;
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m_output[pixel+3] = (byte)(alpha ^ alpha_flip);
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}
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line += m_stride;
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}
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}
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}
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private void UnpackV1 ()
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{
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byte[] window = new byte[0x10000];
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int flag = 0;
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int win_pos = 0;
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int dst = 0;
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while (dst < m_output.Length)
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{
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flag >>= 1;
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if (0 == (flag & 0x100))
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flag = m_input.ReadUInt8() | 0xff00;
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if (0 != (flag & 1))
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{
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byte dat = m_input.ReadUInt8();
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window[win_pos++] = dat;
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win_pos &= 0xffff;
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m_output[dst++] = dat;
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}
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else
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{
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byte control = m_input.ReadUInt8();
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int count, offset;
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if (control >= 0xc0)
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{
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offset = ((control & 3) << 8) | m_input.ReadUInt8();
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count = 4 + ((control >> 2) & 0xf);
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}
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else if (0 != (control & 0x80))
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{
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offset = control & 0x1f;
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count = 2 + ((control >> 5) & 3);
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if (0 == offset)
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offset = m_input.ReadUInt8();
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}
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else if (0x7f == control)
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{
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count = 2 + m_input.ReadUInt16();
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offset = m_input.ReadUInt16();
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}
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else
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{
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offset = m_input.ReadUInt16();
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count = control + 4;
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}
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offset = win_pos - offset;
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for (int k = 0; k < count && dst < m_output.Length; k++)
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{
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offset &= 0xffff;
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byte dat = window[offset++];
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window[win_pos++] = dat;
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win_pos &= 0xffff;
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m_output[dst++] = dat;
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}
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}
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}
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}
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private void UnpackV2 ()
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{
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int pixel_size = m_bpp / 8;
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int src_stride = m_width * pixel_size;
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using (var zlib = new ZLibStream (m_input.AsStream, CompressionMode.Decompress, true))
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using (var src = new BinaryReader (zlib))
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{
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if (m_bpp >= 24)
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{
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for (int y = 0; y < m_height; ++y)
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{
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byte ctl = src.ReadByte();
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int dst = y * m_stride;
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int prev_row = dst - m_stride;
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switch (ctl)
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{
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case 0:
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src.Read (m_output, dst, pixel_size);
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for (int x = pixel_size; x < src_stride; ++x)
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m_output[dst+x] = (byte)(src.ReadByte() + m_output[dst+x - pixel_size]);
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break;
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case 1:
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for (int x = 0; x < src_stride; ++x)
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m_output[dst+x] = (byte)(src.ReadByte() + m_output[prev_row+x]);
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break;
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case 2:
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src.Read (m_output, dst, pixel_size);
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for (int x = pixel_size; x < src_stride; ++x)
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m_output[dst+x] = (byte)(src.ReadByte() + m_output[prev_row+x - pixel_size]);
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break;
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case 3:
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for (int x = src_stride - pixel_size; x > 0; --x)
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m_output[dst++] = (byte)(src.ReadByte() + m_output[prev_row++ + pixel_size]);
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src.Read (m_output, dst, pixel_size);
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break;
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case 4:
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for (int i = 0; i < pixel_size; ++i)
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{
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int w = m_width;
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byte val = src.ReadByte();
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while (w > 0)
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{
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m_output[dst] = val;
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dst += pixel_size;
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if (0 == --w)
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break;
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byte next = src.ReadByte();
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if (val == next)
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{
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int count = src.ReadByte();
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for (int j = 0; j < count; ++j)
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{
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m_output[dst] = val;
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dst += pixel_size;
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}
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w -= count;
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if (w > 0)
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val = src.ReadByte();
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}
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else
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val = next;
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}
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dst -= src_stride - 1;
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}
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break;
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default:
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break;
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}
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}
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}
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else
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{
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int dst = 0;
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for (int y = 0; y < m_height; ++y)
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{
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src.Read (m_output, dst, src_stride);
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dst += m_stride;
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}
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}
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}
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}
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#region IDisposable Members
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public void Dispose ()
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{
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}
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#endregion
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}
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internal sealed class Writer : IDisposable
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{
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BinaryWriter m_output;
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byte[] m_input;
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int m_width;
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int m_height;
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int m_stride;
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int m_bpp;
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int m_compression;
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int m_flags;
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int m_mode;
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public byte[] Data { get { return m_input; } }
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public PixelFormat Format { get; private set; }
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public BitmapPalette Palette { get; private set; }
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public int Stride { get { return m_stride; } }
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public Writer(byte[] input,
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BinaryWriter output,
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CrxMetaData info)
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{
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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m_bpp = info.BPP;
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m_compression = info.Compression;
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m_flags = info.CompressionFlags;
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m_mode = info.Mode;
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Format = CheckFormat (m_bpp);
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m_stride = (m_width * m_bpp / 8 + 3) & ~3;
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m_input = input;
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m_output = output;
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m_output.Seek (0x14, SeekOrigin.Begin);
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if (8 == m_bpp)
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ReadPalette (info.Colors);
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}
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private void ReadPalette (int colors)
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{
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throw new NotImplementedException("CrxFormat.Write 8bit bpp not implemented");
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}
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public void Write (bool isDiff = false)
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{
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int compressed_size_position = 40;
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if (m_compression >= 3)
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{
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var count = 1;
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m_output.Write (count);
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m_output.Seek (count * 0x10, SeekOrigin.Current);
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}
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if (0 != (m_flags & 0x10))
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{
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compressed_size_position = (int) m_output.BaseStream.Position + 4;
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m_output.Seek (compressed_size_position, SeekOrigin.Begin);
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}
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if (32 == m_bpp && m_mode != 1)
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{
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int alpha_flip = 2 == m_mode ? 0 : 0xFF;
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int line = 0;
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for (int h = 0; h < m_height; h++)
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{
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for (int w = 0; w < m_width; w++)
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{
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int pixel = line + w * 4;
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var b = m_input[pixel];
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var g = m_input[pixel + 1];
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var r = m_input[pixel + 2];
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var alpha = m_input[pixel + 3];
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m_input[pixel] = (byte)(alpha ^ alpha_flip);
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m_input[pixel + 1] = b;
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m_input[pixel + 2] = g;
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m_input[pixel + 3] = r;
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}
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line += m_stride;
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}
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}
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if (1 == m_compression)
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WriteV1 ();
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else
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WriteV2 ();
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m_output.Seek (compressed_size_position - 4, SeekOrigin.Begin);
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var compressed_size = (int)m_output.BaseStream.Length; // compressed_size
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m_output.Write (compressed_size);
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}
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private void WriteV2 ()
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{
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int pixel_size = m_bpp / 8;
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int src_stride = m_width * pixel_size;
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m_output.Flush ();
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using (var zlib = new ZLibStream (m_output.BaseStream, CompressionMode.Compress, true))
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using (var output = new BinaryWriter (zlib))
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{
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if (m_bpp >= 24)
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{
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for (int y = 0; y < m_height; ++y)
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{
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byte ctl = 0;
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output.Write (ctl);
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int dst = y * m_stride;
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int prev_row = dst - m_stride;
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switch (ctl)
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{
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case 0:
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output.Write (m_input, dst, pixel_size);
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for (int x = pixel_size; x < src_stride; ++x)
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{
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output.Write ((byte)(m_input[dst + x] - m_input[dst + x - pixel_size]));
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}
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break;
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case 1:
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for (int x = 0; x < src_stride; ++x)
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{
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output.Write ((byte)(m_input[dst + x] - m_input[prev_row + x]));
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}
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break;
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case 2:
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output.Write (m_input, dst, pixel_size);
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|
|
for (int x = pixel_size; x < src_stride; ++x)
|
|
{
|
|
output.Write ((byte)(m_input[dst + x] - m_input[prev_row + x - pixel_size]));
|
|
}
|
|
break;
|
|
case 3:
|
|
for (int x = src_stride - pixel_size; x > 0; --x)
|
|
{
|
|
output.Write ((byte)(m_input[dst++] - m_input[prev_row++ + pixel_size]));
|
|
}
|
|
output.Write (m_input, dst, pixel_size);
|
|
break;
|
|
case 4:
|
|
for (int i = 0; i < pixel_size; ++i)
|
|
{
|
|
int w = m_width;
|
|
byte val = m_input[dst];
|
|
output.Write (val);
|
|
while (w > 0)
|
|
{
|
|
dst += pixel_size;
|
|
if (0 == --w)
|
|
break;
|
|
|
|
byte next = m_input[dst];
|
|
output.Write (next);
|
|
|
|
if (val == next)
|
|
{
|
|
var count = 255;
|
|
|
|
output.Write (count);
|
|
|
|
dst += pixel_size * count;
|
|
w -= count;
|
|
|
|
if (w > 0)
|
|
{
|
|
val = m_input[dst];
|
|
output.Write (val);
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
val = next;
|
|
}
|
|
|
|
}
|
|
dst -= src_stride - 1;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int dst = 0;
|
|
for (int y = 0; y < m_height; ++y)
|
|
{
|
|
m_output.Write (m_input, dst, src_stride);
|
|
dst += m_stride;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
private void WriteV1 ()
|
|
{
|
|
throw new NotImplementedException ("CrxFormat.Write version 1 not implemented");
|
|
}
|
|
|
|
#region IDisposable Members
|
|
public void Dispose ()
|
|
{
|
|
}
|
|
#endregion
|
|
}
|
|
}
|
|
}
|