mirror of
https://github.com/crskycode/GARbro.git
synced 2024-10-23 23:58:17 +08:00
f90e2e851c
(BIZ): moved to Adviz folder. (GIZ, GIZ2, BIZ2, PR1): new PC-98 image formats. (DATA, BGM, SED): MyHarvest resource formats. (HTF): compressed image format. (PAK): Mina resource archives. (GCmp): read palette from external resource. (NCG): Nekotaro image format. (BND, TCZ, TSZ): Ponytail Soft PC-98 formats. (NOR): Sophia resource archive. (SDA, PLA): Squadra D resource archives. (UCA): added checks to avoid false positives.
294 lines
11 KiB
C#
294 lines
11 KiB
C#
//! \file ImageNCG.cs
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//! \date 2023 Oct 10
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//! \brief Nekotaro Game System 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 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.Nekotaro
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{
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[Export(typeof(ImageFormat))]
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public class NcgFormat : ImageFormat
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{
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public override string Tag => "NCG";
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public override string Description => "Nekotaro Game System image format";
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public override uint Signature => 0;
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public NcgFormat ()
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{
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Signatures = new[] { 0xC8500000u, 0u };
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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 (4);
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int left = header[0] << 3;
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int top = header[1] << 1;
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int width = header[2] << 3;
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int height = header[3] << 1;
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int right = left + width;
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int bottom = top + height;
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if (right > 640 || bottom > 400 || 0 == width || 0 == height)
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return null;
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return new ImageMetaData {
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Width = (uint)width,
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Height = (uint)height,
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OffsetX = left,
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OffsetY = top,
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BPP = 4,
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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 NcgReader (file, 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 ("NcgFormat.Write not implemented");
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}
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}
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internal class NcgReader
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{
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IBinaryStream m_input;
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ImageMetaData m_info;
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public NcgReader (IBinaryStream input, ImageMetaData info)
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{
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m_input = input;
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m_info = info;
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}
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public ImageData Unpack ()
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{
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m_input.Position = 4;
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var palette = ReadPalette();
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int width = m_info.iWidth;
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int height = m_info.iHeight;
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int output_stride = width;
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var pixels = new byte[output_stride * height];
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int quart_width = width / 4;
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int half_height = height / 2;
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var blockmap = new bool[quart_width * half_height];
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var bits1 = new byte[8];
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var bits2 = new byte[8];
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byte ctl;
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int dst, pblk;
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do
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{
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for (int i = 0; i < 8; ++i)
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bits1[i] = bits2[i] = 0;
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for (int shift = 0; shift < 4; ++shift)
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{
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byte bit = (byte)(1 << shift);
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FillBits (bits1, bit);
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FillBits (bits2, bit);
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}
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for (;;)
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{
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ctl = m_input.ReadUInt8();
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if (0xFF == ctl || 0x7F == ctl)
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break;
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int pos = (ctl & 0x3F) << 8 | m_input.ReadUInt8();
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int x = (pos % 80) << 3;
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int y = (pos / 80) << 1;
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dst = width * y + x;
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pblk = x / 4 + quart_width * (y / 2);
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switch (ctl >> 6)
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{
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case 0:
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{
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int w_count = m_input.ReadUInt8();
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int h_count = m_input.ReadUInt8();
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int gap = quart_width - 2 * w_count;
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while (h_count --> 0)
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{
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for (int i = 0; i < w_count; ++i)
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{
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for (int j = 0; j < 8; ++j)
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{
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pixels[dst+width] = bits2[j];
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pixels[dst++] = bits1[j];
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}
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blockmap[pblk++] = true;
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blockmap[pblk++] = true;
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}
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pblk += gap;
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dst += 2 * width - 8 * w_count;
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}
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break;
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}
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case 1:
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{
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int count = m_input.ReadUInt8();
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while (count --> 0)
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{
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for (int j = 0; j < 8; ++j)
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{
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pixels[dst+width] = bits2[j];
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pixels[dst++] = bits1[j];
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}
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blockmap[pblk++] = true;
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blockmap[pblk++] = true;
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}
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break;
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}
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case 2:
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{
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int count = m_input.ReadUInt8();
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while (count --> 0)
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{
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for (int j = 0; j < 8; ++j)
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{
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pixels[dst+width] = bits2[j];
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pixels[dst++] = bits1[j];
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}
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blockmap[pblk ] = true;
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blockmap[pblk+1] = true;
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dst += 2 * width - 8;
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pblk += quart_width;
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}
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break;
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}
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case 3:
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{
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for (int j = 0; j < 8; ++j)
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{
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pixels[dst+width] = bits2[j];
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pixels[dst++] = bits1[j];
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}
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blockmap[pblk ] = true;
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blockmap[pblk+1] = true;
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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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while (ctl != 0xFF);
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do
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{
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for (int i = 0; i < 8; ++i)
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bits1[i] = 0;
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for (int shift = 0; shift < 4; ++shift)
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FillBits (bits1, (byte)(1 << shift));
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for (;;)
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{
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ctl = m_input.ReadUInt8();
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if (0xFF == ctl || 0xFE == ctl)
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break;
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int pos = (ctl & 0x7F) << 8 | m_input.ReadUInt8();
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dst = 4 * (pos % 160) + width * 2 * (pos / 160);
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pblk = (pos % 160) + quart_width * (pos / 160);
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if ((ctl & 0x80) == 0)
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{
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int count = m_input.ReadUInt8();
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while (count --> 0)
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{
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for (int j = 0; j < 4; ++j)
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{
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pixels[dst+width] = bits1[j+4];
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pixels[dst++] = bits1[j];
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}
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blockmap[pblk] = true;
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pblk += quart_width;
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dst += 2 * width - 4;
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}
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}
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else
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{
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for (int j = 0; j < 4; ++j)
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{
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pixels[dst+width] = bits1[j+4];
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pixels[dst++] = bits1[j];
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}
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blockmap[pblk] = true;
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}
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}
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}
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while (ctl != 0xFF);
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dst = 0;
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pblk = 0;
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for (int y = 0; y < half_height; ++y)
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{
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for (int x = 0; x < quart_width; ++x)
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{
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if (blockmap[pblk++])
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{
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dst += 4;
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}
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else
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{
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for (int i = 0; i < 8; ++i)
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bits1[i] = 0;
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for (int shift = 0; shift < 4; ++shift)
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FillBits (bits1, (byte)(1 << shift));
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for (int j = 0; j < 4; ++j)
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{
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pixels[dst+width] = bits1[j+4];
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pixels[dst++] = bits1[j];
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}
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}
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}
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dst += width;
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}
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return ImageData.Create (m_info, PixelFormats.Indexed8, palette, pixels, output_stride);
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}
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void FillBits (byte[] bits, byte bit)
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{
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sbyte s = m_input.ReadInt8();
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for (int i = 0; i < 8; ++i)
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{
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if (s < 0)
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bits[i] |= bit;
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s <<= 1;
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}
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}
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static readonly string PaletteKey = "NEKOTARO";
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BitmapPalette ReadPalette ()
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{
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int k = 0;
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var colors = new Color[16];
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for (int c = 0; c < 16; ++c)
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{
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int g = m_input.ReadUInt8();
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int r = m_input.ReadUInt8();
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int b = m_input.ReadUInt8();
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b = (~b - PaletteKey[k++ & 7]) & 0xFF;
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r = (~r - PaletteKey[k++ & 7]) & 0xFF;
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g = (~g - PaletteKey[k++ & 7]) & 0xFF;
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colors[c] = Color.FromRgb ((byte)(r * 0x11), (byte)(g * 0x11), (byte)(b * 0x11));
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}
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return new BitmapPalette (colors);
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}
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}
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}
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