mirror of
https://github.com/crskycode/GARbro.git
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358 lines
14 KiB
C#
358 lines
14 KiB
C#
//! \file ImageDWQ.cs
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//! \date Sat Aug 01 13:18:46 2015
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//! \brief Black Cyc image format.
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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.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using GameRes.Utility;
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namespace GameRes.Formats.BlackCyc
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{
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internal class ResourceHeader
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{
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public static readonly Regex PackTypeRe = new Regex (@"^PACKTYPE=(\d+)(A?) +$");
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public byte[] Bytes { get; private set; }
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public int PackType { get; private set; }
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public bool AType { get; private set; }
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public static ResourceHeader Read (Stream file)
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{
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var header = new byte[0x40];
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if (0x40 != file.Read (header, 0, 0x40))
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return null;
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var header_string = Encoding.ASCII.GetString (header, 0x30, 0x10);
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var match = PackTypeRe.Match (header_string);
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if (!match.Success)
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return null;
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return new ResourceHeader {
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Bytes = header,
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PackType = ushort.Parse (match.Groups[1].Value),
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AType = match.Groups[2].Value.Length > 0,
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};
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}
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}
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internal class DwqMetaData : ImageMetaData
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{
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public string BaseType;
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public int PackedSize;
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public int PackType;
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public bool AType;
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}
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[Export(typeof(ImageFormat))]
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public class DwqFormat : ImageFormat
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{
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public override string Tag { get { return "DWQ"; } }
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public override string Description { get { return "Black Cyc image format"; } }
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public override uint Signature { get { return 0; } }
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public DwqFormat ()
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{
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Signatures = new uint[] {
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0x4745504A, // JPEG
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0x20504D42, // BMP
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0x20474E50, // PNG
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0x4B434150, // PACKBMP
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0x2B504D42, // BMP+MASK
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};
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}
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public override ImageMetaData ReadMetaData (Stream stream)
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{
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var header = ResourceHeader.Read (stream);
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if (null == header)
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return null;
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int packed_size;
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switch (header.PackType)
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{
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case 0: // BMP
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case 5: // JPEG
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case 8: // PNG
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packed_size = (int)(stream.Length-0x40);
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break;
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case 2: // BMP+MASK
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case 3: // PACKBMP+MASK
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case 7: // JPEG+MASK
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packed_size = LittleEndian.ToInt32 (header.Bytes, 0x20);
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break;
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default: // unknown format
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return null;
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}
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return new DwqMetaData
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{
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Width = LittleEndian.ToUInt32 (header.Bytes, 0x24),
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Height = LittleEndian.ToUInt32 (header.Bytes, 0x28),
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BPP = 32,
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BaseType = Encoding.ASCII.GetString (header.Bytes, 0, 0x10).TrimEnd(),
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PackedSize = packed_size,
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PackType = header.PackType,
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AType = header.AType,
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};
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}
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public override ImageData Read (Stream stream, ImageMetaData info)
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{
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var meta = info as DwqMetaData;
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if (null == meta)
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throw new ArgumentException ("DwqFormat.Read should be supplied with DwqMetaData", "info");
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BitmapSource bitmap = null;
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using (var input = new StreamRegion (stream, 0x40, meta.PackedSize, true))
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{
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switch (meta.PackType)
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{
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case 5: // JPEG
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return Jpeg.Read (input, info);
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case 8: // PNG
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return Png.Read (input, info);
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case 0: // BMP
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case 2: // BMP+MASK
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bitmap = ReadFuckedUpBmpImage (input, info);
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break;
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case 7: // JPEG+MASK
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{
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var decoder = new JpegBitmapDecoder (input, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
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bitmap = decoder.Frames[0];
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break;
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}
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case 3: // PACKBMP+MASK
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{
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var reader = new DwqBmpReader (input, meta);
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reader.Unpack();
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bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height,
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ImageData.DefaultDpiX, ImageData.DefaultDpiY,
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reader.Format, reader.Palette, reader.Data, reader.Stride);
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break;
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}
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}
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}
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if (null == bitmap)
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throw new NotImplementedException();
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if (meta.AType)
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{
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int mask_offset = 0x40+meta.PackedSize;
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using (var mask = new StreamRegion (stream, mask_offset, stream.Length-mask_offset, true))
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{
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var reader = new DwqBmpReader (mask, meta);
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if (8 == reader.Format.BitsPerPixel) // mask should be represented as 8bpp bitmap
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{
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reader.Unpack();
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var alpha = reader.Data;
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var palette = reader.Palette.Colors;
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for (int i = 0; i < alpha.Length; ++i)
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{
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var color = palette[alpha[i]];
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int A = (color.R + color.G + color.B) / 3;
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alpha[i] = (byte)A;
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}
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bitmap = ApplyAlphaChannel (bitmap, alpha);
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}
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}
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}
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bitmap.Freeze();
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return new ImageData (bitmap, meta);
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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 ("DwqFormat.Write not implemented");
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}
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private BitmapSource ApplyAlphaChannel (BitmapSource bitmap, byte[] alpha)
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{
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if (bitmap.Format.BitsPerPixel != 32)
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bitmap = new FormatConvertedBitmap (bitmap, PixelFormats.Bgr32, null, 0);
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int stride = bitmap.PixelWidth * 4;
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byte[] pixels = new byte[stride * bitmap.PixelHeight];
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int asrc = 0;
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bitmap.CopyPixels (pixels, stride, 0);
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for (int dst = 3; dst < pixels.Length; dst += 4)
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{
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pixels[dst] = alpha[asrc++];
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}
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return BitmapSource.Create (bitmap.PixelWidth, bitmap.PixelHeight,
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ImageData.DefaultDpiX, ImageData.DefaultDpiY,
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PixelFormats.Bgra32, null, pixels, stride);
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}
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private BitmapSource ReadFuckedUpBmpImage (Stream file, ImageMetaData info)
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{
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var header = new byte[0x36];
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if (header.Length != file.Read (header, 0, header.Length))
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throw new InvalidFormatException();
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int w = LittleEndian.ToInt32 (header, 0x12);
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int h = LittleEndian.ToInt32 (header, 0x16);
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if (w != info.Width || h != info.Height)
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throw new InvalidFormatException();
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int bpp = LittleEndian.ToUInt16 (header, 0x1c);
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PixelFormat format;
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switch (bpp)
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{
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case 32: format = PixelFormats.Bgr32; break;
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case 24: format = PixelFormats.Bgr24; break;
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case 16: format = PixelFormats.Bgr565; break;
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case 8: format = PixelFormats.Indexed8; break;
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default: throw new NotImplementedException();
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}
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BitmapPalette palette = null;
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if (8 == bpp)
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{
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int colors = Math.Min (LittleEndian.ToInt32 (header, 0x2E), 0x100);
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palette = DwqBmpReader.ReadPalette (file, colors);
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}
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int pixel_size = bpp / 8;
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int stride = ((int)info.Width * pixel_size + 3) & ~3;
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var pixels = new byte[stride * info.Height];
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if (pixels.Length != file.Read (pixels, 0, pixels.Length))
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throw new EndOfStreamException();
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if (bpp >= 24)
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{
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for (int row = 0; row < pixels.Length; row += stride)
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{
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for (int i = 2; i < stride; i += pixel_size)
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{
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var t = pixels[row+i];
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pixels[row+i] = pixels[row+i-2];
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pixels[row+i-2] = t;
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}
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}
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}
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return BitmapSource.Create ((int)info.Width, (int)info.Height,
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ImageData.DefaultDpiX, ImageData.DefaultDpiY,
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format, palette, pixels, stride);
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}
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}
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internal class DwqBmpReader
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{
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Stream m_input;
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byte[] m_pixels;
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int m_width;
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int m_height;
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public byte[] Data { get { return m_pixels; } }
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public int Stride { get; private set; }
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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 DwqBmpReader (Stream input, DwqMetaData info)
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{
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m_input = input;
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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var header = new byte[0x36];
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if (header.Length != m_input.Read (header, 0, header.Length))
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throw new InvalidFormatException();
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int w = LittleEndian.ToInt32 (header, 0x12);
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int h = LittleEndian.ToInt32 (header, 0x16);
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if (w != m_width || h != m_height)
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throw new InvalidFormatException();
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int bpp = LittleEndian.ToUInt16 (header, 0x1C);
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switch (bpp)
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{
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case 8: Format = PixelFormats.Indexed8; Stride = m_width; break;
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case 16: Format = PixelFormats.Bgr565; Stride = m_width*2; break;
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case 24: Format = PixelFormats.Bgr24; Stride = m_width*3; break;
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case 32: Format = PixelFormats.Bgr32; Stride = m_width*4; break;
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default: throw new InvalidFormatException();
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}
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if (8 == bpp)
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{
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int colors = Math.Min (LittleEndian.ToInt32 (header, 0x2E), 0x100);
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Palette = ReadPalette (m_input, colors);
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}
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uint data_position = LittleEndian.ToUInt32 (header, 0xA);
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m_input.Position = data_position;
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m_pixels = new byte[Stride*m_height];
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}
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public static BitmapPalette ReadPalette (Stream input, int colors)
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{
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int palette_size = colors * 4;
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var palette_data = new byte[palette_size];
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if (palette_size != 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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for (int i = 0; i < palette.Length; ++i)
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{
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byte r = palette_data[i*4+2];
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byte g = palette_data[i*4+1];
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byte b = palette_data[i*4];
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palette[i] = Color.FromRgb (r, g, b);
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}
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return new BitmapPalette (palette);
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}
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public void Unpack () // sub_408990
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{
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var prev_line = new byte[Stride];
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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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for (int x = 0; x < Stride; )
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{
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int b = m_input.ReadByte();
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if (0 != b)
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{
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if (-1 == b)
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throw new EndOfStreamException();
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m_pixels[dst + x++] = (byte)b;
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}
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else
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{
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int count = m_input.ReadByte();
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if (-1 == count)
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throw new EndOfStreamException();
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for (int i = 0; i < count; ++i)
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m_pixels[dst + x++] = 0;
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}
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}
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for (int i = 0; i < Stride; ++i)
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{
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m_pixels[dst] ^= prev_line[i];
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prev_line[i] = m_pixels[dst++];
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}
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}
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}
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}
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}
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