mirror of
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301 lines
11 KiB
C#
301 lines
11 KiB
C#
//! \file ImageAinos.cs
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//! \date Sun Apr 05 04:16:27 2015
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//! \brief Ainos image format.
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//
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// Copyright (C) 2015 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;
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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 GameRes.Utility;
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namespace GameRes.Formats.Ags
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{
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public class CgMetaData : ImageMetaData
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{
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public int Type;
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public int Right, Bottom;
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}
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[Export(typeof(ImageFormat))]
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[ExportMetadata("Priority", -1)]
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public class CgFormat : ImageFormat
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{
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public override string Tag { get { return "CG"; } }
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public override string Description { get { return "Anime Game System image format"; } }
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public override uint Signature { get { return 0; } }
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public override void Write (Stream file, ImageData image)
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{
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throw new System.NotImplementedException ("CgFormat.Write not implemented");
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}
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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int sig = file.ReadByte();
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if (sig >= 0x20)
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return null;
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int width = file.ReadInt16();
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int height = file.ReadInt16();
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if (width <= 0 || height <= 0 || width > 4096 || height > 4096)
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return null;
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var meta = new CgMetaData
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{
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Width = (uint)width,
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Height = (uint)height,
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BPP = 24,
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Type = sig,
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};
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if (0 != (sig & 7))
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{
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meta.OffsetX = file.ReadInt16();
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meta.OffsetY = file.ReadInt16();
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meta.Right = file.ReadInt16();
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meta.Bottom = file.ReadInt16();
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if (meta.OffsetX > meta.Right || meta.OffsetY > meta.Bottom ||
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meta.Right > width || meta.Bottom > height ||
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meta.OffsetX < 0 || meta.OffsetY < 0)
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return null;
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}
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return meta;
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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using (var reader = new Reader (stream, (CgMetaData)info))
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return reader.Image;
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}
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internal sealed class Reader : IImageDecoder
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{
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IBinaryStream m_input;
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ImageData m_image;
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byte[] m_output;
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int m_type;
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int m_width;
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int m_height;
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int m_left;
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int m_top;
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int m_right;
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int m_bottom;
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bool m_should_dispose;
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public Stream Source { get { m_input.Position = 0; return m_input.AsStream; } }
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public ImageFormat SourceFormat { get { return null; } }
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public ImageMetaData Info { get; private set; }
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public ImageData Image
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{
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get
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{
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if (null == m_image)
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{
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Unpack();
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m_image = ImageData.Create (Info, PixelFormats.Bgr24, null, m_output, m_width*3);
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}
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return m_image;
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}
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}
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public byte[] Data { get { return m_output; } }
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public Reader (IBinaryStream file, CgMetaData info) : this (file, info, null, true)
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{
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}
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public Reader (IBinaryStream file, CgMetaData info, byte[] base_image, bool leave_open = false)
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{
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m_type = info.Type;
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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m_left = info.OffsetX;
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m_top = info.OffsetY;
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m_right = info.Right == 0 ? m_width : info.Right;
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m_bottom = info.Bottom == 0 ? m_height : info.Bottom;
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m_output = base_image ?? CreateBackground();
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m_input = file;
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Info = info;
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ShiftTable = InitShiftTable();
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if (0 != (info.Type & 7))
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m_input.Position = 13;
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else
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m_input.Position = 5;
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m_should_dispose = !leave_open;
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}
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static readonly short[] ShiftX = new short[] { // 409b6c
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0, -1, -3, -2, -1, 0, 1, 2
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};
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static readonly short[] ShiftY = new short[] { // 409b7c
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0, 0, -1, -1, -1, -1, -1, -1
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};
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readonly int[] ShiftTable;
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private int[] InitShiftTable ()
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{
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var table = new int[8];
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for (int i = 0; i < 8; ++i)
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{
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table[i] = 3 * (ShiftX[i] + ShiftY[i] * m_width);
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}
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return table;
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}
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private byte[] CreateBackground ()
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{
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var bg = new byte[3*m_width*m_height];
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for (int i = 1; i < bg.Length; i += 3)
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bg[i] = 0xFF;
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return bg;
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}
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public void Unpack ()
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{
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if (0 != (m_type & 0x10))
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UnpackRGB();
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else
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UnpackIndexed();
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}
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public void UnpackRGB ()
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{
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int right = 3 * (m_width * m_top + m_right);
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int left = 3 * (m_width * m_top + m_left);
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for (int i = m_top; i != m_bottom; ++i)
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{
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int dst = left;
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while (dst != right)
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{
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byte v9 = m_input.ReadUInt8();
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if (0 != (v9 & 0x80))
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{
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if (0 != (v9 & 0x40))
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{
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m_output[dst] = (byte)(m_output[dst - 3] + ((v9 >> 3) & 6) - 2);
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m_output[dst + 1] = (byte)(m_output[dst - 2] + ((v9 >> 1) & 6) - 2);
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m_output[dst + 2] = (byte)(m_output[dst - 1] + ((v9 & 3) + 127) * 2);
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}
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else
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{
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byte v15 = m_input.ReadUInt8();
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m_output[dst] = (byte)(((v9 << 1) + (v15 & 1)) << 1);
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m_output[dst + 1] = (byte)(v15 & 0xfe);
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m_output[dst + 2] = m_input.ReadUInt8();
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}
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dst += 3;
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continue;
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}
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uint shift = (uint)v9 >> 4;
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int count = v9 & 0xF;
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if (0 == count)
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{
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count = (int)m_input.ReadUInt8() + 15;
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if (270 == count)
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{
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int v12;
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do
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{
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v12 = m_input.ReadUInt8();
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count += v12;
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}
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while (v12 == 0xff);
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}
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}
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if (0 != shift)
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{
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int src = dst + ShiftTable[shift];
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Binary.CopyOverlapped (m_output, src, dst, count * 3);
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}
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dst += 3 * count;
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}
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left += m_width*3; //640*3;
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right += m_width*3; //640*3;
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}
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}
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public void UnpackIndexed ()
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{
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byte[] palette = m_input.ReadBytes (0x180);
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int right = 3 * (m_width * m_top + m_right);
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int left = 3 * (m_width * m_top + m_left); // 3 * (Rect.left + 640 * Rect.top);
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for (int i = m_top; i != m_bottom; ++i)
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{
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int dst = left;
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while (dst != right)
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{
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byte v13 = m_input.ReadUInt8();
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if (0 != (v13 & 0x80))
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{
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int color = 3 * (v13 & 0x7F);
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m_output[dst] = palette[color];
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m_output[dst+1] = palette[color+1];
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m_output[dst+2] = palette[color+2];
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dst += 3;
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continue;
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}
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uint shift = (uint)v13 >> 4;
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int count = v13 & 0xF;
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if (0 == count)
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{
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count = m_input.ReadUInt8() + 15;
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if (270 == count)
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{
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int v16;
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do
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{
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v16 = m_input.ReadUInt8();
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count += v16;
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}
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while (v16 == 0xff);
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}
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}
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if (0 != shift)
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{
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int src = dst + ShiftTable[shift];
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Binary.CopyOverlapped (m_output, src, dst, count * 3);
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}
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dst += 3 * count;
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}
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right += m_width*3;
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left += m_width*3;
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}
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}
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#region IDisposable Members
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bool m_disposed = false;
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public void Dispose ()
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{
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if (!m_disposed)
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{
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if (m_should_dispose)
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{
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m_input.Dispose();
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}
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m_disposed = true;
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}
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GC.SuppressFinalize (this);
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}
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#endregion
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}
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}
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}
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