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implemented encrypted AZ system archives and TYP1 images.
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morkt
183
ArcFormats/AZSys/ImageTYP1.cs
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183
ArcFormats/AZSys/ImageTYP1.cs
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//! \file ImageTYP1.cs
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//! \date Thu Jan 14 18:45:18 2016
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//! \brief AZ system image format implementation.
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//
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// Copyright (C) 2016 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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using GameRes.Compression;
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namespace GameRes.Formats.AZSys
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{
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internal class Typ1MetaData : CpbMetaData
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{
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public bool HasPalette;
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}
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[Export(typeof(ImageFormat))]
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public class Typ1Format : ImageFormat
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{
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public override string Tag { get { return "CPB/TYP1"; } }
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public override string Description { get { return "AZ system image format"; } }
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public override uint Signature { get { return 0x31505954; } } // 'TYP1'
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public Typ1Format ()
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{
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Extensions = new string[] { "cpb" };
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}
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public override ImageMetaData ReadMetaData (Stream stream)
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{
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stream.Position = 4;
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int bpp = stream.ReadByte();
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bool has_palette = stream.ReadByte() != 0;
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using (var input = new ArcView.Reader (stream))
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{
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var info = new Typ1MetaData { BPP = bpp, HasPalette = has_palette };
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info.Width = input.ReadUInt16();
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info.Height = input.ReadUInt16();
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input.ReadInt32();
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info.Channel[0] = input.ReadUInt32();
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info.Channel[1] = input.ReadUInt32();
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info.Channel[2] = input.ReadUInt32();
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info.Channel[3] = input.ReadUInt32();
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return info;
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}
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}
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public override ImageData Read (Stream stream, ImageMetaData info)
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{
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var meta = (Typ1MetaData)info;
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var reader = new Reader (stream, meta);
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reader.Unpack();
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return ImageData.Create (meta, reader.Format, reader.Palette, reader.Data);
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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 ("Typ1Format.Write not implemented");
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}
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internal class Reader
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{
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int m_width;
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int m_height;
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int m_bpp;
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int m_pixel_size;
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Stream m_input;
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byte[] m_output;
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uint[] m_channel;
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public PixelFormat Format { get; private set; }
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public BitmapPalette Palette { get; private set; }
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public byte[] Data { get { return m_output; } }
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public Reader (Stream input, Typ1MetaData info)
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{
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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m_bpp = info.BPP;
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m_pixel_size = 8 == m_bpp ? 1 : 4;
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m_channel = info.Channel;
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m_output = new byte[m_width * m_height * m_pixel_size];
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if (8 == m_bpp)
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Format = info.HasPalette ? PixelFormats.Indexed8 : PixelFormats.Gray8;
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else if (24 == m_bpp)
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Format = PixelFormats.Bgr32;
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else if (32 == m_bpp)
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Format = PixelFormats.Bgra32;
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else
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throw new InvalidFormatException ("Invalid CPB color depth");
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m_input = input;
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if (info.HasPalette)
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{
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m_input.Position = 0x1E;
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Palette = ReadPalette();
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}
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}
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public BitmapPalette ReadPalette ()
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{
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var palette_data = new byte[0x400];
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if (0x400 != m_input.Read (palette_data, 0, 0x400))
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throw new InvalidFormatException();
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var palette = new Color[0x100];
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for (int i = 0; i < palette.Length; ++i)
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{
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int src = i * 4;
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byte b = palette_data[src++];
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byte g = palette_data[src++];
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byte r = palette_data[src++];
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palette[i] = Color.FromRgb (r, g, b);
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}
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return new BitmapPalette (palette);
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}
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public void Unpack ()
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{
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if (8 == m_bpp)
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UnpackIndexed();
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else
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UnpackRGB();
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}
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void UnpackIndexed ()
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{
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if (null == Palette)
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m_input.Position = 0x22;
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else
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m_input.Position = 0x422;
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using (var input = new ZLibStream (m_input, CompressionMode.Decompress, true))
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input.Read (m_output, 0, m_output.Length);
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}
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static byte[] StreamMap = new byte[] { 3, 2, 1, 0 };
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static byte[] ChannelMap = new byte[] { 3, 0, 1, 2 };
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void UnpackRGB ()
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{
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byte[] channel = new byte[m_width*m_height];
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long start_pos = 0x1E;
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for (int i = 0; i < 4; ++i)
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{
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if (0 == m_channel[StreamMap[i]])
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continue;
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m_input.Position = start_pos + 4; // skip crc32
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using (var input = new ZLibStream (m_input, CompressionMode.Decompress, true))
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{
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int channel_size = input.Read (channel, 0, channel.Length);
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int dst = ChannelMap[i];
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for (int j = 0; j < channel_size; ++j)
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{
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m_output[dst] = channel[j];
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dst += m_pixel_size;
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}
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}
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start_pos += m_channel[StreamMap[i]];
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}
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}
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}
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}
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}
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