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https://github.com/lifegpc/GARbro.git
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(Legacy): added formats, mostly PC-98.
This commit is contained in:
morkt
438
Legacy/Mapl/ImageMI2.cs
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438
Legacy/Mapl/ImageMI2.cs
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//! \file ImageMI2.cs
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//! \date 2023 Oct 19
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//! \brief Mapl engine image format.
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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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// [980130][Pias] Rashin
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namespace GameRes.Formats.Mapl
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{
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internal class Mi2MetaData : ImageMetaData
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{
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public int Colors;
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}
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[Export(typeof(ImageFormat))]
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public class Mi2Format : ImageFormat
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{
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public override string Tag => "MI2";
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public override string Description => "Mapl engine image format";
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public override uint Signature => 0x28;
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public Mi2Format ()
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{
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Extensions = new[] { "mi2", "fcg" };
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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); // BITMAPINFOHEADER
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int bpp = header.ToUInt16 (0xE);
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if (bpp != 8 && bpp != 24)
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return null;
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uint width = header.ToUInt32 (4);
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uint height = header.ToUInt32 (8);
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int colors = header.ToInt32 (0x20);
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if (8 == bpp)
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{
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if (colors < 0 || colors > 0x100)
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return null;
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if (0 == colors)
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colors = 0x100;
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}
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return new Mi2MetaData {
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Width = width,
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Height = height,
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BPP = bpp,
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Colors = colors,
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};
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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 Mi2Reader (file, (Mi2MetaData)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 ("Mi2Format.Write not implemented");
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}
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}
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internal class Mi2Reader
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{
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IBinaryStream m_input;
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Mi2MetaData m_info;
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public Mi2Reader (IBinaryStream file, Mi2MetaData info)
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{
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m_input = file;
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m_info = info;
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}
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byte[] m_block = new byte[64];
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byte[] m_buffer = new byte[32];
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int stride;
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int block_stride;
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int blocksW;
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int blocksH;
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public ImageData Unpack ()
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{
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stride = (m_info.iWidth + 7) & ~7;
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block_stride = stride * 8;
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blocksW = m_info.iWidth >> 3;
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if ((m_info.iWidth & 7) != 0)
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blocksW++;
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blocksH = m_info.iHeight >> 3;
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if ((m_info.iHeight & 7) != 0)
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blocksH++;
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var channel = new byte[stride * m_info.iHeight];
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m_input.Position = 0x28;
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if (8 == m_info.BPP)
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{
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var palette = ImageFormat.ReadPalette (m_input.AsStream, m_info.Colors);
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UnpackChannel (channel);
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return ImageData.Create (m_info, PixelFormats.Indexed8, palette, channel, stride);
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}
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else
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{
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int bgr_stride = m_info.iWidth * 3;
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var bgr = new byte[bgr_stride * m_info.iHeight];
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for (int c = 0; c < 3; ++c)
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{
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UnpackChannel (channel);
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int src = 0;
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int dst = c;
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for (int y = 0; y < m_info.iHeight; ++y)
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{
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for (int x = 0; x < m_info.iWidth; ++x)
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{
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bgr[dst] = channel[src+x];
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dst += 3;
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}
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src += stride;
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}
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}
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return ImageData.Create (m_info, PixelFormats.Bgr24, null, bgr, bgr_stride);
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}
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}
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void UnpackChannel (byte[] output)
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{
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int dst_row = output.Length - stride;
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for (int y = 0; y < blocksH; ++y)
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{
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int dst_pos = dst_row;
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for (int x = 0; x < blocksW; ++x)
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{
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byte ctl = m_input.ReadUInt8();
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switch (ctl)
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{
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case 0:
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m_input.Read (m_block, 0, m_block.Length);
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break;
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case 1:
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{
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byte b = m_input.ReadUInt8();
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for (int i = 0; i < m_block.Length; ++i)
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m_block[i] = b;
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break;
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}
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case 2:
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Op2();
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break;
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case 3:
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Op3();
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break;
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case 4:
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Op4();
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break;
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case 5:
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Op5();
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break;
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case 6:
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Op6();
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break;
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case 7:
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Op7();
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break;
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case 8:
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Op8();
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AdjustBlock();
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break;
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case 9:
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Op9();
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AdjustBlock();
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break;
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case 10:
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Op4();
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AdjustBlock();
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break;
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case 11:
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Op5();
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AdjustBlock();
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break;
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case 12:
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Op6();
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AdjustBlock();
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break;
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case 13:
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Op7();
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AdjustBlock();
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break;
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default:
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throw new InvalidFormatException();
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}
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int dst = dst_pos;
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int src = 0;
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while (src < m_block.Length && dst >= 0)
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{
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Buffer.BlockCopy (m_block, src, output, dst, 8);
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src += 8;
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dst -= stride;
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}
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dst_pos += 8;
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}
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dst_row -= block_stride;
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}
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}
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void Op2 ()
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{
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byte b = m_input.ReadUInt8();
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m_input.Read (m_buffer, 0, 8);
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int pos = 0;
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for (int i = 0; i < 8; ++i)
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{
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byte mask = 0x80;
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for (int j = 0; j < 8; ++j)
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{
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if ((mask & m_buffer[i]) != 0)
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m_block[pos++] = b;
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else
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m_block[pos++] = m_input.ReadUInt8();
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mask >>= 1;
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}
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}
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}
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void Op3 ()
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{
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int pos = 0;
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byte b1 = m_input.ReadUInt8();
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byte b2 = m_input.ReadUInt8();
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for (int i = 0; i < 8; ++i)
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{
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byte mask = 0x80;
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byte b = m_input.ReadUInt8();
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for (int j = 0; j < 8; ++j)
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{
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if ((mask & b) != 0)
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m_block[pos++] = b2;
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else
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m_block[pos++] = b1;
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mask >>= 1;
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}
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}
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}
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void Op4()
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{
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byte b1 = m_input.ReadUInt8();
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byte b2 = m_input.ReadUInt8();
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byte b3 = m_input.ReadUInt8();
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int dst = 0;
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m_input.Read (m_buffer, 0, 16);
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for (int i = 0; i < 16; ++i)
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{
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byte bits = m_buffer[i];
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for (int j = 0; j < 4; ++j)
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{
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switch (bits >> 6)
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{
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case 0: m_block[dst] = m_input.ReadUInt8(); break;
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case 1: m_block[dst] = b1; break;
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case 2: m_block[dst] = b2; break;
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case 3: m_block[dst] = b3; break;
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}
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dst++;
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bits <<= 2;
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}
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}
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}
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void Op5()
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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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byte b2 = m_input.ReadUInt8();
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byte b3 = m_input.ReadUInt8();
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m_input.Read (m_buffer, 0, 16);
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int dst = 0;
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for (int i = 0; i < 16; ++i)
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{
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byte bits = m_buffer[i];
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for (int j = 0; j < 4; ++j)
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{
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switch (bits >> 6)
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{
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case 0: m_block[dst] = b0; break;
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case 1: m_block[dst] = b1; break;
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case 2: m_block[dst] = b2; break;
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case 3: m_block[dst] = b3; break;
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}
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dst++;
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bits <<= 2;
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}
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}
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}
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byte[] m_buffer2 = new byte[0x100];
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byte[] m_buffer6 = new byte[0x40];
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void Op6()
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{
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int count = m_input.ReadUInt8();
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m_input.Read (m_buffer2, 0, count);
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m_input.Read (m_buffer, 0, 24);
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for (int i = 0; i < m_buffer6.Length; ++i)
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m_buffer6[i] = 0;
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int buf_pos = 0;
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int bits = 0;
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int bit_count = 0;
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int bit_src = 0;
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byte mask = 0x80;
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for (int i = 0; i < 64; ++i)
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{
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byte n0 = 0;
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byte n1 = 4;
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for (int j = 0; j < 3; ++j)
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{
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if (0 == bit_count)
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{
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bits = m_buffer[bit_src++];
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bit_count = 8;
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}
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if ((bits & mask) != 0)
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n0 |= n1;
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--bit_count;
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n1 >>= 1;
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mask = Binary.RotByteR (mask, 1);
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}
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m_buffer6[buf_pos++] = n0;
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}
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for (int i = 0; i < 64; ++i)
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{
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byte b = m_buffer6[i];
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if (b > 0)
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m_block[i] = m_buffer2[b-1];
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else
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m_block[i] = m_input.ReadUInt8();
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}
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}
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void Op7()
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{
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int count = m_input.ReadUInt8();
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m_input.Read (m_buffer2, 0, count);
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m_input.Read (m_buffer, 0, 32);
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int dst = 0;
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for (int i = 0; i < 32; ++i)
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{
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byte b = m_buffer[i];
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for (int j = 0; j < 2; ++j)
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{
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int bits = b >> 4;
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b <<= 4;
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if (bits != 0)
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m_block[dst++] = m_buffer2[bits-1];
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else
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m_block[dst++] = m_input.ReadUInt8();
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}
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}
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}
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void Op8()
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{
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byte b0 = m_input.ReadUInt8();
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m_input.Read (m_buffer, 0, 8);
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int src = 0;
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int dst = 0;
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for (int i = 0; i < 8; ++i)
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{
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byte mask = 0x80;
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byte b = m_buffer[src++];
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for (int j = 0; j < 8; ++j)
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{
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if ((mask & b) != 0)
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m_block[dst++] = b0;
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else
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m_block[dst++] = m_input.ReadUInt8();
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mask >>= 1;
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}
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}
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}
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void Op9()
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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 dst = 0;
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for (int i = 0; i < 8; ++i)
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{
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byte mask = 0x80;
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byte b = m_input.ReadUInt8();
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for (int j = 0; j < 8; ++j)
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{
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if ((mask & b) != 0)
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m_block[dst++] = b1;
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else
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m_block[dst++] = b0;
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mask >>= 1;
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}
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}
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}
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void AdjustBlock()
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{
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int dst = 0;
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for (int i = 0; i < 8; ++i)
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{
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m_input.ReadByte();
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for (int j = 0; j < 8; ++j)
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{
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m_block[dst++] <<= 1;
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}
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}
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}
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}
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}
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