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369 lines
13 KiB
C#
369 lines
13 KiB
C#
//! \file ImageEDT.cs
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//! \date Sun Feb 15 10:13:07 2015
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//! \brief Active Soft image format implementation.
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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.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Text;
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using System.Windows;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using GameRes.Utility;
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namespace GameRes.Formats.AdPack
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{
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internal class EdtMetaData : ImageMetaData
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{
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public uint CompSize;
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public uint ExtraSize;
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}
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internal class Ed8MetaData : ImageMetaData
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{
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public int PaletteSize;
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public uint CompSize;
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}
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internal class BitReader
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{
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int m_bits = 1;
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protected void ResetBits ()
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{
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m_bits = 1;
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}
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protected int NextBit (Stream input)
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{
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if (1 == m_bits)
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{
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m_bits = input.ReadByte();
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if (-1 == m_bits)
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throw new InvalidFormatException ("Unexpected end of input");
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m_bits |= 0x100;
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}
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int bit = m_bits & 1;
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m_bits >>= 1;
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return bit;
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}
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protected int ReadBits (int data, int count, Stream input)
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{
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while (count > 0)
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{
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data = (data << 1) | NextBit (input);
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--count;
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}
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return data;
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}
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protected int CountBits (Stream input)
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{
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int bit = 1, count = 0;
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while (count < 0x20 && 1 == bit)
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{
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++count;
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bit = NextBit (input);
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}
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if (--count != 0)
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return ReadBits (1, count, input);
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else
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return 1;
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}
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}
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[Export(typeof(ImageFormat))]
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public class EdtFormat : ImageFormat
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{
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public override string Tag { get { return "EDT"; } }
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public override string Description { get { return "Active Soft RGB image format"; } }
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public override uint Signature { get { return 0x5552542eu; } } // '.TRU'
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public override void Write (Stream file, ImageData image)
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{
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throw new NotImplementedException ("EdtFormat.Write not implemented");
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}
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = stream.ReadHeader (0x22);
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if (!header.AsciiEqual (".TRUE\x8d\x5d\x8c\xcb\x00"))
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return null;
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uint width = header.ToUInt16 (0x0e);
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uint height = header.ToUInt16 (0x10);
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uint comp_size = header.ToUInt32 (0x1a);
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uint extra_size = header.ToUInt32 (0x1e);
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if (extra_size % 3 != 0 || 0 == extra_size)
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return null;
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return new EdtMetaData
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{
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Width = width,
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Height = height,
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BPP = 24,
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CompSize = comp_size,
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ExtraSize = extra_size,
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};
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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var meta = (EdtMetaData)info;
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stream.Position = 0x22;
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using (var reader = new Reader (stream.AsStream, meta))
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{
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reader.Unpack();
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return ImageData.Create (meta, PixelFormats.Bgr24, null, reader.Data, (int)meta.Width*3);
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}
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}
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internal sealed class Reader : BitReader, IDisposable
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{
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MemoryStream m_packed;
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MemoryStream m_extra;
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byte[] m_output;
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int[] ShiftTable = new int[32];
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public byte[] Data { get { return m_output; } }
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public Reader (Stream file, EdtMetaData info)
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{
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byte[] packed = new byte[info.CompSize];
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file.Read (packed, 0, packed.Length);
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m_packed = new MemoryStream (packed, false);
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byte[] extra = new byte[info.ExtraSize];
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file.Read (extra, 0, extra.Length);
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m_extra = new MemoryStream (extra, false);
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m_output = new byte[info.Width*info.Height*3];
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int stride = (int)info.Width * 3;
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int offset = stride * -4;
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int i = 0;
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while (offset != 0)
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{
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int shift = offset - 9;
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for (int j = 0; j < 7; ++j)
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{
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ShiftTable[i++] = shift;
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shift += 3;
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}
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offset += stride;
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}
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offset = -12;
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while (offset != 0)
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{
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ShiftTable[i++] = offset;
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offset += 3;
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}
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}
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public void Unpack ()
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{
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int dst = 0;
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if (3 != m_extra.Read (m_output, dst, 3))
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throw new InvalidFormatException ("Unexpected end of input");
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dst += 3;
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while (dst < m_output.Length)
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{
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if (1 == NextBit (m_packed))
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{
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if (0 == NextBit (m_packed))
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{
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int offset = ShiftTable[ReadBits (0, 5, m_packed)];
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if (dst < -offset)
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return;
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int count = CountBits (m_packed) * 3;
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Binary.CopyOverlapped (m_output, dst + offset, dst, count);
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dst += count;
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}
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else
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{
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int offset = -3;
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if (1 == NextBit (m_packed))
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{
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offset = ShiftTable[(0x11191718 >> ((ReadBits (0, 2, m_packed) << 3)) & 0xFF)];
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if (dst < -offset)
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return;
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}
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for (int i = 0; i < 3; ++i)
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{
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int b = m_output[dst+offset];
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if (b < 2)
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b = 2;
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else if (b > 0xfd)
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b = 0xfd;
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if (1 == NextBit (m_packed))
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{
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int b2 = 1 + NextBit (m_packed);
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if (0 == NextBit (m_packed))
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b -= b2;
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else
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b += b2;
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}
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m_output[dst++] = (byte)b;
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}
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}
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}
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else
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{
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if (3 != m_extra.Read (m_output, dst, 3))
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throw new InvalidFormatException ("Unexpected end of input");
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dst += 3;
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}
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}
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}
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#region IDisposable Members
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bool disposed = false;
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public void Dispose ()
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{
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if (!disposed)
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{
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m_packed.Dispose();
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m_extra.Dispose();
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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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[Export(typeof(ImageFormat))]
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public class Ed8Format : ImageFormat
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{
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public override string Tag { get { return "ED8"; } }
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public override string Description { get { return "Active Soft indexed image format"; } }
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public override uint Signature { get { return 0x6942382eu; } } // '.8Bi'
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public Ed8Format ()
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{
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Extensions = new string[] { "ed8", "sal" };
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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 NotImplementedException ("Ed8Format.Write not implemented");
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}
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = stream.ReadHeader (0x1A);
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if (!header.AsciiEqual (".8Bit\x8d\x5d\x8c\xcb\x00"))
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return null;
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uint width = header.ToUInt16 (0x0e);
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uint height = header.ToUInt16 (0x10);
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int palette_size = header.ToInt32 (0x12);
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uint comp_size = header.ToUInt32 (0x16);
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if (palette_size > 0x100)
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return null;
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return new Ed8MetaData
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{
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Width = width,
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Height = height,
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BPP = 8,
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PaletteSize = palette_size,
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CompSize = comp_size,
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};
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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var meta = (Ed8MetaData)info;
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var reader = new Reader (stream.AsStream, meta);
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reader.Unpack();
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var palette = new BitmapPalette (reader.Palette);
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return ImageData.Create (info, PixelFormats.Indexed8, palette, reader.Data, (int)info.Width);
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}
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internal class Reader : BitReader
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{
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Stream m_input;
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byte[] m_data;
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Color[] m_palette;
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int m_width;
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public Color[] Palette { get { return m_palette; } }
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public byte[] Data { get { return m_data; } }
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private static readonly sbyte[] ShiftTable = new sbyte[] {
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// (-1,0) (0,1) (-2,0) (-1,1) (1,1) (0,2) (-2,1) (2,1)
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-0x10, 0x01, -0x20, -0x0F, 0x11, 0x02, -0x1F, 0x21,
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// (-2,2) (-1,2) (1,2) (2,2) (0,3) (-1,3)
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-0x1E, -0x0E, 0x12, 0x22, 0x03, -0x0D
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};
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public Reader (Stream file, Ed8MetaData info)
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{
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m_width = (int)info.Width;
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m_input = file;
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m_data = new byte[info.Width * info.Height];
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}
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public void Unpack ()
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{
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m_input.Position = 0x1A;
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m_palette = ReadColorMap (m_input, 0x100, PaletteFormat.Bgr);
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int data_pos = 0;
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while (data_pos < m_data.Length)
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{
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m_data[data_pos++] = (byte)ReadBits (0, 8, m_input);
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if (m_data.Length == data_pos)
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break;
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if (1 == NextBit (m_input))
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continue;
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int prev_code = -1;
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while (data_pos < m_data.Length)
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{
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int code = 0;
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if (1 == NextBit (m_input))
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{
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if (1 == NextBit (m_input))
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code = NextBit (m_input) + 1;
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code = (code << 1) + NextBit (m_input) + 1;
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}
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code = (code << 1) + NextBit (m_input);
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if (code == prev_code)
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break;
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prev_code = code;
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int count = CountBits (m_input);
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if (prev_code >= 2)
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++count;
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if (data_pos + count > m_data.Length)
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throw new InvalidFormatException();
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int shift = ShiftTable[prev_code];
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int offset = (shift >> 4) - (shift & 0xf) * m_width;
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Binary.CopyOverlapped (m_data, data_pos+offset, data_pos, count);
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data_pos += count;
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}
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}
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}
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}
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}
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}
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