From 3c023d1b6b690f7796671dd75c234c6cb38ee00a Mon Sep 17 00:00:00 2001 From: morkt Date: Fri, 31 Aug 2018 04:38:37 +0400 Subject: [PATCH] (Candy): implemented compressed images. --- ArcFormats/Interheart/ImageCandy.cs | 215 ++++++++++++++++++++++++++++ 1 file changed, 215 insertions(+) create mode 100644 ArcFormats/Interheart/ImageCandy.cs diff --git a/ArcFormats/Interheart/ImageCandy.cs b/ArcFormats/Interheart/ImageCandy.cs new file mode 100644 index 00000000..0e8ce7fd --- /dev/null +++ b/ArcFormats/Interheart/ImageCandy.cs @@ -0,0 +1,215 @@ +//! \file ImageCandy.cs +//! \date 2018 Aug 24 +//! \brief Candy Soft image format. +// +// Copyright (C) 2018 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.Windows.Media; +using System.Windows.Media.Imaging; +using GameRes.Utility; + +namespace GameRes.Formats.Interheart +{ + internal class CandyMetaData : ImageMetaData + { + public int Colors; + } + + [Export(typeof(ImageFormat))] + public class CandyFormat : ImageFormat + { + public override string Tag { get { return "PIC/CANDY"; } } + public override string Description { get { return "Candy Soft image format"; } } + public override uint Signature { get { return 0; } } + + public CandyFormat () + { + Extensions = new string[] { "" }; + } + + public override ImageMetaData ReadMetaData (IBinaryStream file) + { + var header = file.ReadHeader (10); + if (BigEndian.ToUInt16 (header, 0) != 10 || header[7] != 1) + return null; + return new CandyMetaData { + Width = BigEndian.ToUInt16 (header, 2), + Height = BigEndian.ToUInt16 (header, 4), + BPP = header[6], + Colors = BigEndian.ToUInt16 (header, 8), + }; + } + + public override ImageData Read (IBinaryStream file, ImageMetaData info) + { + var reader = new CandyDecoder (file, (CandyMetaData)info); + var pixels = reader.Unpack(); + return ImageData.Create (info, reader.Format, reader.Palette, pixels); + } + + public override void Write (Stream file, ImageData image) + { + throw new System.NotImplementedException ("CandyFormat.Write not implemented"); + } + } + + internal class CandyDecoder + { + IBinaryStream m_input; + byte[] m_output; + int m_width; + int m_height; + int m_stride; + int m_colors; + + public PixelFormat Format { get; private set; } + public BitmapPalette Palette { get; private set; } + + public CandyDecoder (IBinaryStream input, CandyMetaData info) + { + m_input = input; + m_width = (int)info.Width; + m_height = (int)info.Height; + m_colors = info.Colors; + if (32 == info.BPP) + { + m_stride = (int)m_width * 3; + Format = PixelFormats.Bgr24; + } + else + { + m_stride = (int)m_width; + Format = PixelFormats.Indexed8; + } + m_output = new byte[m_stride * m_height]; + } + + public byte[] Unpack () + { + m_input.Position = 0xA; + if (m_colors > 0) + Palette = ReadPalette(); + LzUnpack(); + if (m_colors > 0) + return m_output; + var pixels = new byte[m_output.Length]; + int src = 0; + for (int block_y = 0; block_y < m_height; block_y += 80) + for (int block_x = 0; block_x < m_width; block_x += 80) + { + int dst_col = block_y * m_stride + block_x * 3; + int block_height = Math.Min (80, m_height - block_y); + int block_width = Math.Min (80, m_width - block_x); + for (int x = 0; x < block_width; ++x) + { + int dst = dst_col; + for (int y = 0; y < block_height; ++y) + { + pixels[dst+2] = m_output[src++]; + pixels[dst+1] = m_output[src++]; + pixels[dst ] = m_output[src++]; + dst += m_stride; + } + dst_col += 3; + } + } + return pixels; + } + + void LzUnpack () + { + var bits = new byte[16]; + var frame = new byte[0x1000]; + int frame_pos = 0; + int dst = 0; + while (dst < m_output.Length) + { + int ctl = m_input.ReadByte(); + if (-1 == ctl) + break; + bits[0] = (byte)(ctl & 1); + bits[1] = 1; + int count = 0; + for (int i = 1; i < 8; ++i) + { + ctl >>= 1; + if (bits[2*count] == (ctl & 1)) + { + ++bits[2*count + 1]; + } + else + { + ++count; + bits[2*count] = (byte)(ctl & 1); + bits[2*count + 1] = 1; + } + } + for (int i = 0; i <= count && dst < m_output.Length; ++i) + { + int bpos = 2*i; + if (bits[bpos++] != 0) + { + while (bits[bpos] > 0) + { + byte b = m_input.ReadUInt8(); + m_output[dst++] = frame[frame_pos++ & 0xFFF] = b; + --bits[bpos]; + } + } + else + { + while (bits[bpos] > 0 && dst < m_output.Length) + { + int offset = m_input.ReadUInt16(); + int zcount = Math.Min ((offset & 0xF) + 3, m_output.Length - dst); + offset >>= 4; + for (int j = 0; j < zcount; ++j) + { + byte b = frame[offset++ & 0xFFF]; + m_output[dst++] = frame[frame_pos++ & 0xFFF] = b; + } + --bits[bpos]; + } + } + } + } + } + + BitmapPalette ReadPalette () + { + var palette_data = new byte[4 * m_colors]; + if (palette_data.Length != m_input.Read (palette_data, 0, palette_data.Length)) + throw new EndOfStreamException(); + int src = 0; + var color_map = new Color[m_colors]; + for (int i = 0; i < m_colors; ++i) + { + color_map[i] = Color.FromRgb (palette_data[src+1], palette_data[src+2], palette_data[src+3]); + src += 4; + } + return new BitmapPalette (color_map); + } + } +}