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implemented GHP2 images.
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morkt
parent
513519522c
commit
c51c6e560b
@ -2,7 +2,7 @@
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//! \date 2017 Dec 26
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//! \brief Succubus image format.
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//
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// Copyright (C) 2017 by morkt
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// Copyright (C) 2017-2018 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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@ -23,16 +23,23 @@
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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.Media;
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using System.Windows.Media.Imaging;
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// [000310][Succubus] Utagoe 2 ~Dance Mix~
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namespace GameRes.Formats.Succubus
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{
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internal class GhpMetaData : ImageMetaData
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{
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public int Version;
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public int Colors;
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public uint PaletteOffset;
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public uint DataOffset;
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public int ChunkCount;
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}
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[Export(typeof(ImageFormat))]
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@ -40,26 +47,42 @@ namespace GameRes.Formats.Succubus
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{
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public override string Tag { get { return "GH"; } }
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public override string Description { get { return "Succubus image format"; } }
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public override uint Signature { get { return 0x33504847; } } // 'GHP3'
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public override uint Signature { get { return 0x33504847; } }
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public GhFormat ()
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{
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Signatures = new uint[] { 0x33504847, 0x32504847 }; // 'GHP3', 'GHP2'
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}
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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var header = file.ReadHeader (0x28);
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return new GhpMetaData {
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int version = header[3] - '0';
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var info = new GhpMetaData {
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Width = header.ToUInt16 (0xC),
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Height = header.ToUInt16 (0xE),
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BPP = 8,
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Colors = header.ToUInt16 (0x10),
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PaletteOffset = header.ToUInt32 (0x18),
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DataOffset = header.ToUInt32 (0x24),
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Version = version,
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};
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if (2 == version)
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{
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info.PaletteOffset = header.ToUInt32 (0x14);
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info.ChunkCount = header.ToInt32 (0x18);
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info.DataOffset = header.ToUInt32 (0x1C);
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}
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else
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{
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info.PaletteOffset = header.ToUInt32 (0x18);
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info.DataOffset = header.ToUInt32 (0x24);
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}
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return info;
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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var reader = new Ghp3Reader (file, (GhpMetaData)info);
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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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var reader = new GhpReader (file, (GhpMetaData)info);
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return reader.Unpack();
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}
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public override void Write (Stream file, ImageData image)
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@ -68,38 +91,189 @@ namespace GameRes.Formats.Succubus
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}
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}
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internal class Ghp3Reader
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internal class GhpReader
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{
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IBinaryStream m_input;
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GhpMetaData m_info;
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byte[] m_output;
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int m_stride;
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int m_depth;
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public PixelFormat Format { get { return PixelFormats.Indexed8; } }
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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 byte[] Data { get { return m_output; } }
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public Ghp3Reader (IBinaryStream input, GhpMetaData info)
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public GhpReader (IBinaryStream input, GhpMetaData info)
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{
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m_input = input;
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m_info = info;
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m_stride = ((int)info.Width + 3) & ~3;
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m_depth = GetColorDepth (m_info.Colors);
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m_output = new byte[m_stride * (int)m_info.Height];
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}
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public void Unpack ()
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public ImageData Unpack ()
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{
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m_input.Position = m_info.PaletteOffset;
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Palette = ImageFormat.ReadPalette (m_input.AsStream, m_info.Colors, PaletteFormat.Bgr);
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var palette = ImageFormat.ReadPalette (m_input.AsStream, m_info.Colors, PaletteFormat.Rgb);
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m_input.Position = m_info.DataOffset;
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if (2 == m_info.Version)
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Unpack2();
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else
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Unpack3();
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return ImageData.Create (m_info, PixelFormats.Indexed8, palette, m_output, m_stride);
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}
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void Unpack2 ()
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{
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int width = (int)m_info.Width;
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var repeat_table = new uint[(width * (int)m_info.Height + 31) / 32];
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int count = 0;
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int skip = 5;
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int x = 0, y = 0;
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int next_x = 0, next_y = 0;
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ReadPos();
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int pix = ReadBits (m_depth);
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for (int i = 0; i < m_info.ChunkCount; )
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{
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if (count <= 0)
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{
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int ctl = ReadBits (2);
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if (ctl > 2)
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count = ReadCount() - 1;
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else
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skip = ReadBits (1) + 2 * ctl;
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}
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else
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{
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--count;
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}
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m_output[m_stride * y + x] = (byte)pix;
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int rpos = width * y + x;
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repeat_table[rpos >> 5] |= 1u << (rpos & 0x1F);
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if (skip >= 5)
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{
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int pos = ReadPos() + next_x;
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next_y += Math.DivRem (pos, width, out next_x);
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pix = ReadBits (m_depth);
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y = next_y;
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x = next_x;
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++i;
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}
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else
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{
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++y;
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x += skip - 2;
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}
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}
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pix = 0;
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int src = 0;
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uint bitmap = 0;
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for (y = 0; y < (int)m_info.Height; ++y)
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for (x = 0; x < width; ++x)
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{
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if ((src & 0x1F) == 0)
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bitmap = repeat_table[src >> 5];
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if ((bitmap & 1) != 0)
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pix = m_output[m_stride * y + x];
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else
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m_output[m_stride * y + x] = (byte)pix;
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bitmap >>= 1;
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++src;
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}
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}
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void Unpack3 ()
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{
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int image_size = (m_stride * (int)m_info.Height + 0x1F) & ~0x1F;
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int table_size = image_size >> 3;
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var rows_table = new int[m_info.Height];
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for (uint i = 0; i < info.Height; ++i)
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for (uint i = 0; i < m_info.Height; ++i)
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{
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int line_pos = i * m_stride;
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int line_pos = (int)i * m_stride;
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uint y = m_info.Height - i;
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rows_table[y - 1] = line_pos;
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}
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throw new NotImplementedException();
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}
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internal static int GetColorDepth (int colors)
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{
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int depth = 0;
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for (int bit = 1; bit < colors && depth < 24; bit <<= 1)
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{
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++depth;
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}
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return depth;
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}
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int ReadPos ()
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{
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int pos = ReadBitCount();
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if (pos > 0)
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return BitTable[2 * pos + 3] + ReadBits (BitTable[2 * pos + 2]) + 1;
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else
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return ReadBits (2) + 1;
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}
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int ReadCount ()
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{
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int count = 0;
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int x = ReadBitCount();
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if (x > 0)
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count = BitTable[2 * x + 1] + ReadBits (BitTable[2 * x]) + 1;
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return count + 2;
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}
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uint m_bits = 0;
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int m_cached_bits = 0;
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int ReadBits (int count)
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{
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uint bits = 0;
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if (count > m_cached_bits)
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{
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if (m_cached_bits > 0)
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{
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count -= m_cached_bits;
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bits = m_bits >> (32 - m_cached_bits) << count;
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}
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FillBitsCache();
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}
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bits |= m_bits >> (32 - count);
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m_bits <<= count;
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m_cached_bits -= count;
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return (int)bits;
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}
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int ReadBitCount ()
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{
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uint count = 0;
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for (;;)
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{
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if (0 == m_cached_bits)
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FillBitsCache();
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uint bit = m_bits >> 31;
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--m_cached_bits;
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m_bits <<= 1;
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if (0 == bit)
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break;
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++count;
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}
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return (int)count;
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}
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void FillBitsCache ()
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{
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m_bits = 0;
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for (int shift = 0; shift < 32; shift += 8)
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{
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int b = m_input.ReadByte();
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if (-1 == b)
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break;
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m_bits |= (uint)b << shift;
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}
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m_cached_bits = 32;
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}
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static readonly int[] BitTable = {
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0, 0, 2, 0, 4, 4, 6, 0x14, 8, 0x54, 0x0C, 0x154, 0x10, 0x1154, 0x12, 0x11154,
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};
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}
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}
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