//! \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 = (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); if (0 == colors) colors = 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++]; } } } } }