GARbro-mirror/ArcFormats/BlackCyc/ImageDWQ.cs

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//! \file ImageDWQ.cs
//! \date Sat Aug 01 13:18:46 2015
//! \brief Black Cyc image format.
//
// Copyright (C) 2015 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System;
using System.ComponentModel.Composition;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using GameRes.Utility;
namespace GameRes.Formats.BlackCyc
{
internal class ResourceHeader
{
public static readonly Regex PackTypeRe = new Regex (@"^PACKTYPE=(\d+)(A?) +$");
public byte[] Bytes { get; private set; }
public int PackType { get; private set; }
public bool AType { get; private set; }
public static ResourceHeader Read (Stream file)
{
var header = new byte[0x40];
if (0x40 != file.Read (header, 0, 0x40))
return null;
var header_string = Encoding.ASCII.GetString (header, 0x30, 0x10);
var match = PackTypeRe.Match (header_string);
if (!match.Success)
return null;
return new ResourceHeader {
Bytes = header,
PackType = ushort.Parse (match.Groups[1].Value),
AType = match.Groups[2].Value.Length > 0,
};
}
}
internal class DwqMetaData : ImageMetaData
{
public string BaseType;
public int PackedSize;
public int PackType;
public bool AType;
}
[Export(typeof(ImageFormat))]
public class DwqFormat : ImageFormat
{
public override string Tag { get { return "DWQ"; } }
public override string Description { get { return "Black Cyc image format"; } }
public override uint Signature { get { return 0; } }
public DwqFormat ()
{
Signatures = new uint[] {
0x4745504A, // JPEG
0x20504D42, // BMP
0x20474E50, // PNG
0x4B434150, // PACKBMP
0x2B504D42, // BMP+MASK
};
}
public override ImageMetaData ReadMetaData (Stream stream)
{
var header = ResourceHeader.Read (stream);
if (null == header)
return null;
int packed_size;
switch (header.PackType)
{
case 0: // BMP
case 5: // JPEG
case 8: // PNG
packed_size = (int)(stream.Length-0x40);
break;
case 2: // BMP+MASK
case 3: // PACKBMP+MASK
case 7: // JPEG+MASK
packed_size = LittleEndian.ToInt32 (header.Bytes, 0x20);
break;
default: // unknown format
return null;
}
return new DwqMetaData
{
Width = LittleEndian.ToUInt32 (header.Bytes, 0x24),
Height = LittleEndian.ToUInt32 (header.Bytes, 0x28),
BPP = 32,
BaseType = Encoding.ASCII.GetString (header.Bytes, 0, 0x10).TrimEnd(),
PackedSize = packed_size,
PackType = header.PackType,
AType = header.AType,
};
}
public override ImageData Read (Stream stream, ImageMetaData info)
{
var meta = info as DwqMetaData;
if (null == meta)
throw new ArgumentException ("DwqFormat.Read should be supplied with DwqMetaData", "info");
BitmapSource bitmap = null;
using (var input = new StreamRegion (stream, 0x40, meta.PackedSize, true))
{
switch (meta.PackType)
{
case 5: // JPEG
return Jpeg.Read (input, info);
case 8: // PNG
return Png.Read (input, info);
case 0: // BMP
case 2: // BMP+MASK
bitmap = ReadFuckedUpBmpImage (input, info);
break;
case 7: // JPEG+MASK
{
var decoder = new JpegBitmapDecoder (input, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
bitmap = decoder.Frames[0];
break;
}
case 3: // PACKBMP+MASK
{
var reader = new DwqBmpReader (input, meta);
reader.Unpack();
bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height,
ImageData.DefaultDpiX, ImageData.DefaultDpiY,
reader.Format, reader.Palette, reader.Data, reader.Stride);
break;
}
}
}
if (null == bitmap)
throw new NotImplementedException();
if (meta.AType)
{
int mask_offset = 0x40+meta.PackedSize;
using (var mask = new StreamRegion (stream, mask_offset, stream.Length-mask_offset, true))
{
var reader = new DwqBmpReader (mask, meta);
if (8 == reader.Format.BitsPerPixel) // mask should be represented as 8bpp bitmap
{
reader.Unpack();
var alpha = reader.Data;
var palette = reader.Palette.Colors;
for (int i = 0; i < alpha.Length; ++i)
{
var color = palette[alpha[i]];
int A = (color.R + color.G + color.B) / 3;
alpha[i] = (byte)A;
}
bitmap = ApplyAlphaChannel (bitmap, alpha);
}
}
}
bitmap.Freeze();
return new ImageData (bitmap, meta);
}
public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("DwqFormat.Write not implemented");
}
private BitmapSource ApplyAlphaChannel (BitmapSource bitmap, byte[] alpha)
{
if (bitmap.Format.BitsPerPixel != 32)
bitmap = new FormatConvertedBitmap (bitmap, PixelFormats.Bgr32, null, 0);
int stride = bitmap.PixelWidth * 4;
byte[] pixels = new byte[stride * bitmap.PixelHeight];
int asrc = 0;
bitmap.CopyPixels (pixels, stride, 0);
for (int dst = 3; dst < pixels.Length; dst += 4)
{
pixels[dst] = alpha[asrc++];
}
return BitmapSource.Create (bitmap.PixelWidth, bitmap.PixelHeight,
ImageData.DefaultDpiX, ImageData.DefaultDpiY,
PixelFormats.Bgra32, null, pixels, stride);
}
private BitmapSource ReadFuckedUpBmpImage (Stream file, ImageMetaData info)
{
var header = new byte[0x36];
if (header.Length != file.Read (header, 0, header.Length))
throw new InvalidFormatException();
int w = LittleEndian.ToInt32 (header, 0x12);
int h = LittleEndian.ToInt32 (header, 0x16);
if (w != info.Width || h != info.Height)
throw new InvalidFormatException();
int bpp = LittleEndian.ToUInt16 (header, 0x1c);
PixelFormat format;
switch (bpp)
{
case 32: format = PixelFormats.Bgr32; break;
case 24: format = PixelFormats.Bgr24; break;
case 16: format = PixelFormats.Bgr565; break;
case 8: format = PixelFormats.Indexed8; break;
default: throw new NotImplementedException();
}
BitmapPalette palette = null;
if (8 == bpp)
{
int colors = Math.Min (LittleEndian.ToInt32 (header, 0x2E), 0x100);
palette = DwqBmpReader.ReadPalette (file, colors);
}
int pixel_size = bpp / 8;
int stride = ((int)info.Width * pixel_size + 3) & ~3;
var pixels = new byte[stride * info.Height];
if (pixels.Length != file.Read (pixels, 0, pixels.Length))
throw new EndOfStreamException();
if (bpp >= 24)
{
for (int row = 0; row < pixels.Length; row += stride)
{
for (int i = 2; i < stride; i += pixel_size)
{
var t = pixels[row+i];
pixels[row+i] = pixels[row+i-2];
pixels[row+i-2] = t;
}
}
}
return BitmapSource.Create ((int)info.Width, (int)info.Height,
ImageData.DefaultDpiX, ImageData.DefaultDpiY,
format, palette, pixels, stride);
}
}
internal class DwqBmpReader
{
Stream m_input;
byte[] m_pixels;
int m_width;
int m_height;
public byte[] Data { get { return m_pixels; } }
public int Stride { get; private set; }
public PixelFormat Format { get; private set; }
public BitmapPalette Palette { get; private set; }
public DwqBmpReader (Stream input, DwqMetaData info)
{
m_input = input;
m_width = (int)info.Width;
m_height = (int)info.Height;
var header = new byte[0x36];
if (header.Length != m_input.Read (header, 0, header.Length))
throw new InvalidFormatException();
int w = LittleEndian.ToInt32 (header, 0x12);
int h = LittleEndian.ToInt32 (header, 0x16);
if (w != m_width || h != m_height)
throw new InvalidFormatException();
int bpp = LittleEndian.ToUInt16 (header, 0x1C);
switch (bpp)
{
case 8: Format = PixelFormats.Indexed8; Stride = m_width; break;
case 16: Format = PixelFormats.Bgr565; Stride = m_width*2; break;
case 24: Format = PixelFormats.Bgr24; Stride = m_width*3; break;
case 32: Format = PixelFormats.Bgr32; Stride = m_width*4; break;
default: throw new InvalidFormatException();
}
if (8 == bpp)
{
int colors = Math.Min (LittleEndian.ToInt32 (header, 0x2E), 0x100);
Palette = ReadPalette (m_input, colors);
}
uint data_position = LittleEndian.ToUInt32 (header, 0xA);
m_input.Position = data_position;
m_pixels = new byte[Stride*m_height];
}
public static BitmapPalette ReadPalette (Stream input, int colors)
{
int palette_size = colors * 4;
var palette_data = new byte[palette_size];
if (palette_size != input.Read (palette_data, 0, palette_size))
throw new InvalidFormatException();
var palette = new Color[colors];
for (int i = 0; i < palette.Length; ++i)
{
byte r = palette_data[i*4+2];
byte g = palette_data[i*4+1];
byte b = palette_data[i*4];
palette[i] = Color.FromRgb (r, g, b);
}
return new BitmapPalette (palette);
}
public void Unpack () // sub_408990
{
var prev_line = new byte[Stride];
int dst = 0;
for (int y = 0; y < m_height; ++y)
{
for (int x = 0; x < Stride; )
{
int b = m_input.ReadByte();
if (0 != b)
{
if (-1 == b)
throw new EndOfStreamException();
m_pixels[dst + x++] = (byte)b;
}
else
{
int count = m_input.ReadByte();
if (-1 == count)
throw new EndOfStreamException();
for (int i = 0; i < count; ++i)
m_pixels[dst + x++] = 0;
}
}
for (int i = 0; i < Stride; ++i)
{
m_pixels[dst] ^= prev_line[i];
prev_line[i] = m_pixels[dst++];
}
}
}
}
}