mirror of
https://github.com/crskycode/GARbro.git
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570 lines
21 KiB
C#
570 lines
21 KiB
C#
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//! \file ImageGDT.cs
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//! \date 2023 Sep 29
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//! \brief AGS engine image format (PC-98).
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//
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// Copyright (C) 2023 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 GameRes.Utility;
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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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namespace GameRes.Formats.CsWare
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{
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internal class GdtMetaData : ImageMetaData
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{
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public byte Flags;
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public bool HasPalette => (Flags & 0x80) != 0;
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public bool IsDouble => (Flags & 0x40) == 0;
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}
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[Export(typeof(ImageFormat))]
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public class GdtFormat : ImageFormat
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{
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public override string Tag => "GDT";
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public override string Description => "AGS engine image format";
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public override uint Signature => 0x314144; // 'DA1'
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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var header = file.ReadHeader (16);
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var info = new GdtMetaData {
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OffsetX = header[8] << 3,
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OffsetY = header.ToUInt16 (0xA),
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Width = (uint)header[9] << 3,
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Height = header.ToUInt16 (0xC),
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BPP = 4,
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Flags = header[0xF],
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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 GdtReader (file, (GdtMetaData)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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{
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throw new System.NotImplementedException ("GdtFormat.Write not implemented");
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}
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}
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internal class GdtReader
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{
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IBinaryStream m_input;
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GdtMetaData m_info;
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int m_stride;
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int m_output_stride;
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public BitmapPalette Palette { get; private set; }
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public GdtReader (IBinaryStream file, GdtMetaData info)
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{
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m_input = file;
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m_info = info;
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m_stride = info.iWidth >> 3;
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m_output_stride = info.iWidth >> 1;
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}
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byte[][] m_planes;
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public ImageData Unpack ()
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{
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m_input.Position = 0x10;
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if (m_info.HasPalette)
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{
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Palette = ReadPalette();
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}
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var packed_sizes = new ushort[4];
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for (int i = 0; i < 4; ++i)
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packed_sizes[i] = m_input.ReadUInt16();
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long plane_pos = m_input.Position;
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int plane_size = m_stride * m_info.iHeight;
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m_planes = new byte[][] {
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new byte[plane_size], new byte[plane_size], new byte[plane_size], new byte[plane_size],
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};
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Action<int> UnpackPlane = UnpackSingle;
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if (m_info.IsDouble)
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UnpackPlane = UnpackDouble;
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for (int i = 0; i < 4; ++i)
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{
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m_input.Position = plane_pos;
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plane_pos += packed_sizes[i];
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UnpackPlane (i);
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}
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var pixels = new byte[m_output_stride * m_info.iHeight];
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FlattenPlanes (pixels);
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PixelFormat format;
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if (null == Palette)
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format = PixelFormats.Gray4;
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else
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format = PixelFormats.Indexed4;
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return ImageData.Create (m_info, format, Palette, pixels, m_output_stride);
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}
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void UnpackSingle (int plane_index)
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{
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int h = m_info.iHeight;
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int w = m_stride;
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int dst = 0;
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while (w --> 0)
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{
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Unpack8Line (plane_index, dst);
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dst += h;
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}
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}
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void UnpackDouble (int plane_index)
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{
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var output = m_planes[plane_index];
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int h = m_info.iHeight;
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int width = m_stride;
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int dst = 0;
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if ((m_info.OffsetX & 8) != 0)
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{
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Unpack8Line (plane_index, dst);
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--width;
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dst += h;
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}
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if ((m_input.Position & 1) != 0)
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m_input.Seek (1, SeekOrigin.Current);
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if (1 == width)
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{
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Unpack8Line (plane_index, dst);
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return;
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}
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while (m_input.PeekByte() != -1)
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{
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byte op = m_input.ReadUInt8();
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byte ctl = m_input.ReadUInt8();
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if (ctl < 0x80)
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{
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if (0 == ctl)
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continue;
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ushort w = (ushort)(((op & 0xF) << 8 | (op & 0xF0) >> 4) * 0x11);
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int count = ctl;
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Fill (output, dst , count, w);
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Fill (output, dst+h, count, w);
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dst += count * 2;
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}
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else if (ctl < 0xC0)
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{
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int count = ctl & 0x3F;
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int w = op & 0xF | (op & 0xF0) << 4;
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uint d = (uint)(w | (w & 0x0303) << 18 | (w & 0x0C0C) << 14);
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d = Binary.BigEndian (d | d << 4);
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Fill (output, dst , count, d);
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Fill (output, dst+h, count, d);
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dst += count * 4;
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}
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else if (ctl < 0xD0)
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{
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byte b = (byte)((ctl & 0xF) | ctl << 4);
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int count = op;
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Fill (output, dst , count, b);
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Fill (output, dst+h, count, b);
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dst += count;
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}
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else if (ctl < 0xD2)
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{
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int count = (ctl & 1) << 8 | op;
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while (count --> 0)
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{
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output[dst ] = m_input.ReadUInt8();
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output[dst+h] = m_input.ReadUInt8();
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}
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}
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else if (0xD2 == ctl)
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{
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dst += op;
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}
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else if (ctl < 0xF3)
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{
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int count = op;
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int off = 0;
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switch (ctl)
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{
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case 0xD3: off = 16; break;
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case 0xD4: off = 12; break;
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case 0xD5: off = 8; break;
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case 0xD6: off = 4; break;
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case 0xD7: off = 2; break;
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case 0xD8: off = 1; break;
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case 0xD9: off = h * 2 + 8; break;
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case 0xDA: off = h * 2 + 4; break;
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case 0xDB: off = h * 2 + 2; break;
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case 0xDC: off = h * 2 + 1; break;
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case 0xDD: off = h * 2; break;
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case 0xDE: off = h * 2 - 1; break;
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case 0xDF: off = h * 2 - 2; break;
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case 0xE0: off = h * 2 - 4; break;
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case 0xE1: off = h * 2 - 8; break;
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case 0xE2: off = h * 4 + 8; break;
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case 0xE3: off = h * 4 + 4; break;
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case 0xE4: off = h * 4 + 2; break;
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case 0xE5: off = h * 4 + 1; break;
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case 0xE6: off = h * 4; break;
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case 0xE7: off = h * 4 - 1; break;
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case 0xE8: off = h * 4 - 2; break;
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case 0xE9: off = h * 4 - 4; break;
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case 0xEA: off = h * 4 - 8; break;
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case 0xEB: off = h * 6 + 4; break;
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case 0xEC: off = h * 6 + 2; break;
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case 0xED: off = h * 6 + 1; break;
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case 0xEE: off = h * 6; break;
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case 0xEF: off = h * 6 - 1; break;
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case 0xF0: off = h * 6 - 2; break;
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case 0xF1: off = h * 6 - 4; break;
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case 0xF2: off = h * 8; break;
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}
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Binary.CopyOverlapped (output, dst-off, dst, count);
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Binary.CopyOverlapped (output, dst-off+h, dst+h, count);
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dst += count;
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}
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else if (ctl < 0xFC)
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{
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int count = op;
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var source = m_planes[(ctl - 0xF3) % 3];
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if (ctl < 0xF6)
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{
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Buffer.BlockCopy (source, dst, output, dst, count);
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Buffer.BlockCopy (source, dst+h, output, dst+h, count);
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dst += count;
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}
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else if (ctl > 0xF8)
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{
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var source1 = m_planes[ctl & 1];
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var source2 = m_planes[ctl & 2];
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while (count --> 0)
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{
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output[dst] = (byte)(source1[dst] & source2[dst]);
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output[dst+h] = (byte)(source1[dst+h] & source2[dst+h]);
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++dst;
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}
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}
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else
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{
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while (count --> 0)
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{
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output[dst] = (byte)~source[dst];
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output[dst+h] = (byte)~source[dst+h];
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++dst;
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}
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}
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}
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else if (0xFC == ctl)
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{
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int count = op;
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byte b = m_input.ReadUInt8();
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Fill (output, dst , count, b);
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Fill (output, dst+h, count, b);
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dst += count;
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}
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else if (0xFD == ctl)
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{
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if (op < 0x80)
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{
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int count = op;
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ushort w = m_input.ReadUInt16();
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Fill (output, dst , count, w);
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Fill (output, dst+h, count, w);
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dst += count * 2;
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}
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else
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{
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int count = op & 0x7F;
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ushort w1 = m_input.ReadUInt16();
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ushort w2 = m_input.ReadUInt16();
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Fill (output, dst , count, (ushort)(w1 << 8 | w2 & 0xFF));
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Fill (output, dst+h, count, (ushort)(w1 & 0xFF | w2 >> 8));
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dst += count * 2;
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}
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}
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else if (0xFE == ctl)
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{
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int count = op & 0x3F;
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if (op < 0x80)
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{
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byte b0 = m_input.ReadUInt8();
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byte b1 = m_input.ReadUInt8();
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int d = b1 | b0 << 16;
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d = d & 0x0F000F | (d & 0xF000F0) << 4;
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d *= 0x11;
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d = Binary.BigEndian (d);
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Fill (output, dst , count, (uint)d);
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Fill (output, dst+h, count, (uint)d);
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}
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else
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{
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uint d0 = m_input.ReadUInt32();
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uint d1 = m_input.ReadUInt32();
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uint p0 = d0 << 24 | d0 & 0xFF0000 | (d1 & 0xFF) << 8 | (d1 & 0xFF0000) >> 16;
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uint p1 = (d0 & 0xFF00) << 16 | (d0 & 0xFF000000) >> 8 | d1 & 0xFF00 | (d1 & 0xFF000000) >> 24;
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Fill (output, dst , count, p0);
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Fill (output, dst+h, count, p1);
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}
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dst += count * 4;
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}
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else // 0xFF
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{
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dst += h;
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width -= 2;
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if (0 == width)
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break;
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if (1 == width)
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{
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Unpack8Line (plane_index, dst);
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break;
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}
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}
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}
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}
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void Unpack8Line (int plane_index, int dst)
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{
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var output = m_planes[plane_index];
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int h = m_info.iHeight;
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int end_pos = dst + h;
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while (m_input.PeekByte() != -1)
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{
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byte ctl = m_input.ReadUInt8();
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if (ctl < 0x40)
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{
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byte b = 0;
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if (ctl >= 0x20)
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b = 0xFF;
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int count = ctl & 0x1F;
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if (0 == count)
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count = m_input.ReadUInt8();
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Fill (output, dst, count, b);
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dst += count;
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}
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else if (ctl < 0xA0)
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{
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int count = ctl & 0x1F;
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if (0 == count)
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|
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count = m_input.ReadUInt8();
|
||
|
|
int src_plane = (ctl - 0x40) >> 5;
|
||
|
|
Buffer.BlockCopy (m_planes[src_plane], dst, output, dst, count);
|
||
|
|
dst += count;
|
||
|
|
}
|
||
|
|
else if (ctl < 0xF0)
|
||
|
|
{
|
||
|
|
int count = ctl & 0xF;
|
||
|
|
if (0 == count)
|
||
|
|
count = m_input.ReadUInt8();
|
||
|
|
switch (ctl & 0xF0)
|
||
|
|
{
|
||
|
|
case 0xA0: Binary.CopyOverlapped (output, dst-16, dst, count); break;
|
||
|
|
case 0xB0: Binary.CopyOverlapped (output, dst-8, dst, count); break;
|
||
|
|
case 0xC0: Binary.CopyOverlapped (output, dst-4, dst, count); break;
|
||
|
|
case 0xD0: Binary.CopyOverlapped (output, dst-2, dst, count); break;
|
||
|
|
case 0xE0: Binary.CopyOverlapped (output, dst-h*2, dst, count); break;
|
||
|
|
}
|
||
|
|
dst += count;
|
||
|
|
}
|
||
|
|
else if (ctl < 0xF9)
|
||
|
|
{
|
||
|
|
int count = ctl & 0xF;
|
||
|
|
if (0 == count)
|
||
|
|
count = m_input.ReadUInt8();
|
||
|
|
m_input.Read (output, dst, count);
|
||
|
|
dst += count;
|
||
|
|
}
|
||
|
|
else if (0xF9 == ctl)
|
||
|
|
{
|
||
|
|
dst += m_input.ReadUInt8();
|
||
|
|
}
|
||
|
|
else if (0xFA == ctl)
|
||
|
|
{
|
||
|
|
int count = m_input.ReadUInt8();
|
||
|
|
byte b = m_input.ReadUInt8();
|
||
|
|
Fill (output, dst, count, b);
|
||
|
|
dst += count;
|
||
|
|
}
|
||
|
|
else if (0xFB == ctl)
|
||
|
|
{
|
||
|
|
int count = m_input.ReadUInt8();
|
||
|
|
int b = count >> 7;
|
||
|
|
count &= 0x7F;
|
||
|
|
while (count --> 0)
|
||
|
|
{
|
||
|
|
output[dst] = (byte)~m_planes[b][dst];
|
||
|
|
++dst;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (0xFC == ctl)
|
||
|
|
{
|
||
|
|
int count = m_input.ReadUInt8();
|
||
|
|
if ((count & 0x80) != 0)
|
||
|
|
{
|
||
|
|
count &= 0x7F;
|
||
|
|
byte b = m_input.ReadUInt8();
|
||
|
|
ushort d = (ushort)(b & 0xF | (b & 0xF0) << 4);
|
||
|
|
d |= (ushort)(d << 4);
|
||
|
|
Fill (output, dst, count, d);
|
||
|
|
dst += count * 2;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
while (count --> 0)
|
||
|
|
{
|
||
|
|
output[dst] = (byte)~m_planes[2][dst];
|
||
|
|
++dst;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (0xFD == ctl)
|
||
|
|
{
|
||
|
|
int count = m_input.ReadUInt8();
|
||
|
|
if ((count & 0x80) != 0)
|
||
|
|
{
|
||
|
|
byte b = m_input.ReadUInt8();
|
||
|
|
uint d = (uint)(b & 0xF | b << 4 | (b & 0xF0) << 8);
|
||
|
|
if ((count & 0x40) != 0)
|
||
|
|
{
|
||
|
|
b = m_input.ReadUInt8();
|
||
|
|
d |= (uint)((b & 0xF) << 16 | b << 20 | (b & 0xF0) << 24);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
d |= (d & 0x3F3F) << 18 | (d & 0xC0C0) << 10;
|
||
|
|
}
|
||
|
|
count &= 0x3F;
|
||
|
|
Fill (output, dst, count, d);
|
||
|
|
dst += count * 4;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ushort w = m_input.ReadUInt16();
|
||
|
|
Fill (output, dst, count, w);
|
||
|
|
dst += count * 2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (0xFE == ctl)
|
||
|
|
{
|
||
|
|
int count = m_input.ReadUInt8();
|
||
|
|
int b = count & 0xC0;
|
||
|
|
if (b != 0)
|
||
|
|
{
|
||
|
|
count &= 0x3F;
|
||
|
|
b >>= 6;
|
||
|
|
while (count --> 0)
|
||
|
|
{
|
||
|
|
output[dst] = (byte)(m_planes[b & 1][dst] & m_planes[b & 2][dst]);
|
||
|
|
++dst;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
uint u = m_input.ReadUInt32();
|
||
|
|
Fill (output, dst, count, u);
|
||
|
|
dst += count * 4;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else // 0xFF
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void FlattenPlanes (byte[] output)
|
||
|
|
{
|
||
|
|
int plane_size = m_planes[0].Length;
|
||
|
|
int src = 0;
|
||
|
|
for (int x = 0; x < m_output_stride; x += 4)
|
||
|
|
{
|
||
|
|
int dst = x;
|
||
|
|
for (int y = 0; y < m_info.iHeight; ++y)
|
||
|
|
{
|
||
|
|
byte b0 = m_planes[0][src];
|
||
|
|
byte b1 = m_planes[1][src];
|
||
|
|
byte b2 = m_planes[2][src];
|
||
|
|
byte b3 = m_planes[3][src];
|
||
|
|
++src;
|
||
|
|
for (int j = 0; j < 8; j += 2)
|
||
|
|
{
|
||
|
|
byte px = (byte)((((b0 << j) & 0x80) >> 3)
|
||
|
|
| (((b1 << j) & 0x80) >> 2)
|
||
|
|
| (((b2 << j) & 0x80) >> 1)
|
||
|
|
| (((b3 << j) & 0x80) >> 0));
|
||
|
|
px |= (byte)((((b0 << j) & 0x40) >> 6)
|
||
|
|
| (((b1 << j) & 0x40) >> 5)
|
||
|
|
| (((b2 << j) & 0x40) >> 4)
|
||
|
|
| (((b3 << j) & 0x40) >> 3));
|
||
|
|
output[dst+j/2] = px;
|
||
|
|
}
|
||
|
|
dst += m_output_stride;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void Fill (byte[] output, int dst, int count, byte pixel)
|
||
|
|
{
|
||
|
|
while (count --> 0)
|
||
|
|
{
|
||
|
|
output[dst++] = pixel;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void Fill (byte[] output, int dst, int count, ushort pixel)
|
||
|
|
{
|
||
|
|
count <<= 1;
|
||
|
|
for (int i = 0; i < count; i += 2)
|
||
|
|
{
|
||
|
|
LittleEndian.Pack (pixel, output, dst+i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void Fill (byte[] output, int dst, int count, uint pixel)
|
||
|
|
{
|
||
|
|
count <<= 2;
|
||
|
|
for (int i = 0; i < count; i += 4)
|
||
|
|
{
|
||
|
|
LittleEndian.Pack (pixel, output, dst+i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
BitmapPalette ReadPalette ()
|
||
|
|
{
|
||
|
|
using (var bits = new MsbBitStream (m_input.AsStream, true))
|
||
|
|
{
|
||
|
|
var colors = new Color[16];
|
||
|
|
for (int i = 0; i < 16; ++i)
|
||
|
|
{
|
||
|
|
int b = bits.GetBits (4) * 0x11;
|
||
|
|
int r = bits.GetBits (4) * 0x11;
|
||
|
|
int g = bits.GetBits (4) * 0x11;
|
||
|
|
colors[i] = Color.FromRgb ((byte)r, (byte)g, (byte)b);
|
||
|
|
}
|
||
|
|
return new BitmapPalette (colors);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|