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558 lines
20 KiB
C#
558 lines
20 KiB
C#
//! \file ImageGAL.cs
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//! \date Wed Jun 08 03:07:41 2016
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//! \brief LiveMaker image format.
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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;
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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.Linq;
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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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using GameRes.Formats.Properties;
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using GameRes.Formats.Strings;
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using GameRes.Utility;
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namespace GameRes.Formats.LiveMaker
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{
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internal class GalMetaData : ImageMetaData
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{
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public int Version;
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public int FrameCount;
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public bool Shuffled;
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public int Compression;
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public uint Mask;
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public int BlockWidth;
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public int BlockHeight;
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public int DataOffset;
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}
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internal class GalOptions : ResourceOptions
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{
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public uint Key;
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}
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[Serializable]
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public class GalScheme : ResourceScheme
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{
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public Dictionary<string, string> KnownKeys;
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}
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[Export(typeof(ImageFormat))]
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public class GalFormat : ImageFormat
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{
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public override string Tag { get { return "GAL"; } }
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public override string Description { get { return "LiveMaker image format"; } }
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public override uint Signature { get { return 0x656C6147; } } // 'Gale'
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public static Dictionary<string, string> KnownKeys = new Dictionary<string, string>();
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public override ResourceScheme Scheme
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{
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get { return new GalScheme { KnownKeys = KnownKeys }; }
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set { KnownKeys = ((GalScheme)value).KnownKeys; }
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}
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = new byte[0x30];
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if (11 != stream.Read (header, 0, 11))
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return null;
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int version = header[4] * 100 + header[5] * 10 + header[6] - 5328;
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if (version < 100 || version > 107)
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return null;
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int header_size = LittleEndian.ToInt32 (header, 7);
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if (header_size < 0x28 || header_size > 0x100)
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return null;
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if (header_size > header.Length)
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header = new byte[header_size];
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if (header_size != stream.Read (header, 0, header_size))
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return null;
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if (version != LittleEndian.ToInt32 (header, 0))
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return null;
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return new GalMetaData
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{
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Width = LittleEndian.ToUInt32 (header, 4),
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Height = LittleEndian.ToUInt32 (header, 8),
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BPP = LittleEndian.ToInt32 (header, 0xC),
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Version = version,
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FrameCount = LittleEndian.ToInt32 (header, 0x10),
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Shuffled = header[0x15] != 0,
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Compression = header[0x16],
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Mask = LittleEndian.ToUInt32 (header, 0x18),
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BlockWidth = LittleEndian.ToInt32 (header, 0x1C),
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BlockHeight = LittleEndian.ToInt32 (header, 0x20),
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DataOffset = header_size + 11,
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};
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}
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uint? LastKey = null;
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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var meta = (GalMetaData)info;
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uint key = 0;
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if (meta.Shuffled)
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{
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if (LastKey != null)
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key = LastKey.Value;
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else
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key = QueryKey();
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}
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try
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{
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using (var reader = new GalReader (stream, meta, key))
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{
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reader.Unpack();
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if (meta.Shuffled)
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LastKey = key;
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return ImageData.Create (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
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}
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}
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catch
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{
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LastKey = null;
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throw;
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}
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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 ("GalFormat.Write not implemented");
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}
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public override ResourceOptions GetDefaultOptions ()
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{
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return new GalOptions { Key = KeyFromString (Settings.Default.GALKey) };
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}
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public override object GetAccessWidget ()
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{
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return new GUI.WidgetGAL();
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}
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uint QueryKey ()
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{
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if (!KnownKeys.Any())
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return 0;
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var options = Query<GalOptions> (arcStrings.ArcImageEncrypted);
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return options.Key;
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}
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public static uint KeyFromString (string key)
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{
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if (string.IsNullOrWhiteSpace (key) || key.Length < 4)
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return 0;
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return (uint)(key[0] | key[1] << 8 | key[2] << 16 | key[3] << 24);
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}
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}
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internal sealed class GalReader : IDisposable
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{
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IBinaryStream m_input;
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GalMetaData m_info;
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byte[] m_output;
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List<Frame> m_frames;
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uint m_key;
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public byte[] Data { get { return m_output; } }
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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 int Stride { get; private set; }
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public GalReader (IBinaryStream input, GalMetaData info, uint key)
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{
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m_info = info;
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if (m_info.Compression < 0 || m_info.Compression > 2)
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throw new InvalidFormatException();
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m_frames = new List<Frame> (m_info.FrameCount);
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m_key = key;
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m_input = input;
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}
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internal class Frame
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{
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public int Width;
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public int Height;
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public int BPP;
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public int Stride;
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public int AlphaStride;
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public List<Layer> Layers;
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public Color[] Palette;
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public Frame (int layer_count)
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{
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Layers = new List<Layer> (layer_count);
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}
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}
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internal class Layer
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{
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public byte[] Pixels;
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public byte[] Alpha;
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}
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public void Unpack ()
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{
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m_input.Position = m_info.DataOffset;
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uint name_length = m_input.ReadUInt32();
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m_input.Seek (name_length, SeekOrigin.Current);
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uint mask = m_input.ReadUInt32();
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m_input.Seek (9, SeekOrigin.Current);
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int layer_count = m_input.ReadInt32();
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if (layer_count < 1)
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throw new InvalidFormatException();
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if (layer_count > 1)
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throw new NotImplementedException();
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// XXX only first frame is interpreted.
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var frame = new Frame (layer_count);
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frame.Width = m_input.ReadInt32();
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frame.Height = m_input.ReadInt32();
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frame.BPP = m_input.ReadInt32();
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if (frame.BPP <= 0)
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throw new InvalidFormatException();
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if (frame.BPP <= 8)
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frame.Palette = ImageFormat.ReadColorMap (m_input.AsStream, 1 << frame.BPP);
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frame.Stride = (frame.Width * frame.BPP + 7) / 8;
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frame.AlphaStride = (frame.Width + 3) & ~3;
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if (frame.BPP >= 8)
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frame.Stride = (frame.Stride + 3) & ~3;
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m_frames.Add (frame);
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for (int i = 0; i < layer_count; ++i)
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{
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m_input.ReadInt32();
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m_input.ReadInt32();
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m_input.ReadByte(); // visibility
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m_input.ReadInt32(); // -1
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m_input.ReadInt32(); // 0xFF
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m_input.ReadByte();
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name_length = m_input.ReadUInt32();
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m_input.Seek (name_length, SeekOrigin.Current);
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if (m_info.Version >= 107)
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m_input.ReadByte();
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var layer = new Layer();
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int layer_size = m_input.ReadInt32();
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long layer_end = m_input.Position + layer_size;
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layer.Pixels = UnpackLayer (frame, layer_size);
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m_input.Position = layer_end;
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int alpha_size = m_input.ReadInt32();
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if (alpha_size != 0)
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{
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layer.Alpha = UnpackLayer (frame, alpha_size, true);
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}
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frame.Layers.Add (layer);
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}
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Flatten (0);
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}
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byte[] UnpackLayer (Frame frame, int length, bool is_alpha = false)
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{
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using (var packed = new StreamRegion (m_input.AsStream, m_input.Position, length, true))
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{
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if (0 == m_info.Compression || 2 == m_info.Compression && is_alpha)
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return ReadZlib (frame, packed, is_alpha);
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if (2 == m_info.Compression)
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return ReadJpeg (frame, packed);
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return ReadBlocks (frame, packed, is_alpha);
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}
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}
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byte[] ReadBlocks (Frame frame, Stream packed, bool is_alpha)
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{
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if (m_info.BlockWidth <= 0 || m_info.BlockHeight <= 0)
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return ReadRaw (frame, packed, is_alpha);
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int blocks_w = (frame.Width + m_info.BlockWidth - 1) / m_info.BlockWidth;
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int blocks_h = (frame.Height + m_info.BlockHeight - 1) / m_info.BlockHeight;
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int blocks_count = blocks_w * blocks_h;
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var data = new byte[blocks_count * 8];
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packed.Read (data, 0, data.Length);
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var refs = new int[blocks_count * 2];
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Buffer.BlockCopy (data, 0, refs, 0, data.Length);
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if (m_info.Shuffled)
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ShuffleBlocks (refs, blocks_count);
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int bpp = is_alpha ? 8 : frame.BPP;
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int stride = is_alpha ? frame.AlphaStride : frame.Stride;
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var pixels = new byte[stride * frame.Height];
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int i = 0;
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for (int y = 0; y < frame.Height; y += m_info.BlockHeight)
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{
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int height = Math.Min (m_info.BlockHeight, frame.Height - y);
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for (int x = 0; x < frame.Width; x += m_info.BlockWidth)
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{
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int dst = y * stride + (x * bpp + 7) / 8;
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int width = Math.Min (m_info.BlockWidth, frame.Width - x);
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int chunk_size = (width * bpp + 7) / 8;
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if (-1 == refs[i])
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{
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for (int j = 0; j < height; ++j)
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{
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packed.Read (pixels, dst, chunk_size);
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dst += stride;
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}
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}
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else if (-2 == refs[i])
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{
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int src_x = m_info.BlockWidth * (refs[i+1] % blocks_w);
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int src_y = m_info.BlockHeight * (refs[i+1] / blocks_w);
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int src = src_y * stride + (src_x * bpp + 7) / 8;
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for (int j = 0; j < height; ++j)
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{
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Buffer.BlockCopy (pixels, src, pixels, dst, chunk_size);
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src += stride;
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dst += stride;
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}
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}
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else
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{
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int frame_ref = refs[i];
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int layer_ref = refs[i+1];
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if (frame_ref > m_frames.Count || layer_ref > m_frames[frame_ref].Layers.Count)
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throw new InvalidFormatException();
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var layer = m_frames[frame_ref].Layers[layer_ref];
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byte[] src = is_alpha ? layer.Alpha : layer.Pixels;
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for (int j = 0; j < height; ++j)
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{
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Buffer.BlockCopy (src, dst, pixels, dst, chunk_size);
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dst += stride;
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}
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}
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i += 2;
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}
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}
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return pixels;
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}
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byte[] ReadRaw (Frame frame, Stream packed, bool is_alpha)
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{
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int stride = is_alpha ? frame.AlphaStride : frame.Stride;
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var pixels = new byte[frame.Height * stride];
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if (m_info.Shuffled)
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{
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foreach (var dst in RandomSequence (frame.Height, m_key))
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{
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packed.Read (pixels, dst*stride, stride);
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}
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}
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else
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{
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packed.Read (pixels, 0, pixels.Length);
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}
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return pixels;
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}
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byte[] ReadZlib (Frame frame, Stream packed, bool is_alpha)
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{
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using (var zs = new ZLibStream (packed, CompressionMode.Decompress))
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return ReadBlocks (frame, zs, is_alpha);
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}
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byte[] ReadJpeg (Frame frame, Stream packed)
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{
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var decoder = new JpegBitmapDecoder (packed, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
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var bitmap = decoder.Frames[0];
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frame.BPP = bitmap.Format.BitsPerPixel;
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int stride = bitmap.PixelWidth * bitmap.Format.BitsPerPixel / 8;
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var pixels = new byte[bitmap.PixelHeight * stride];
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bitmap.CopyPixels (pixels, stride, 0);
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return pixels;
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}
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void Flatten (int frame_num)
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{
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// XXX only first layer is considered.
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var frame = m_frames[frame_num];
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var layer = frame.Layers[0];
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if (null == layer.Alpha)
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{
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m_output = layer.Pixels;
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if (null != frame.Palette)
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Palette = new BitmapPalette (frame.Palette);
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if (8 == frame.BPP)
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Format = PixelFormats.Indexed8;
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else if (16 == frame.BPP)
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Format = PixelFormats.Bgr565;
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else if (24 == frame.BPP)
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Format = PixelFormats.Bgr24;
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else if (32 == frame.BPP)
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Format = PixelFormats.Bgr32;
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else if (4 == frame.BPP)
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Format = PixelFormats.Indexed4;
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else
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throw new NotSupportedException();
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Stride = frame.Stride;
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}
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else
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{
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m_output = new byte[frame.Width * frame.Height * 4];
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switch (frame.BPP)
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{
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case 4: Flatten4bpp (frame, layer); break;
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case 8: Flatten8bpp (frame, layer); break;
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case 16: Flatten16bpp (frame, layer); break;
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case 24: Flatten24bpp (frame, layer); break;
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case 32: Flatten32bpp (frame, layer); break;
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default: throw new NotSupportedException ("Not supported color depth");
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}
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Format = PixelFormats.Bgra32;
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Stride = frame.Width * 4;
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}
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}
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void Flatten4bpp (Frame frame, Layer layer)
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{
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int dst = 0;
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int src = 0;
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int a = 0;
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for (int y = 0; y < frame.Height; ++y)
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{
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for (int x = 0; x < frame.Width; ++x)
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{
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byte pixel = layer.Pixels[src + x/2];
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int index = 0 == (x & 1) ? (pixel & 0xF) : (pixel >> 4);
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var color = frame.Palette[index];
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m_output[dst++] = color.B;
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m_output[dst++] = color.G;
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m_output[dst++] = color.R;
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m_output[dst++] = layer.Alpha[a+x];
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}
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src += frame.Stride;
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a += frame.AlphaStride;
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}
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}
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void Flatten8bpp (Frame frame, Layer layer)
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{
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int dst = 0;
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int src = 0;
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int a = 0;
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for (int y = 0; y < frame.Height; ++y)
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{
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for (int x = 0; x < frame.Width; ++x)
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{
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var color = frame.Palette[ layer.Pixels[src+x] ];
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m_output[dst++] = color.B;
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m_output[dst++] = color.G;
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m_output[dst++] = color.R;
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m_output[dst++] = layer.Alpha[a+x];
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}
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src += frame.Stride;
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a += frame.AlphaStride;
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}
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}
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void Flatten16bpp (Frame frame, Layer layer)
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{
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int src = 0;
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int dst = 0;
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int a = 0;
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for (int y = 0; y < frame.Height; ++y)
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{
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for (int x = 0; x < frame.Width; ++x)
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{
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int pixel = LittleEndian.ToUInt16 (layer.Pixels, src + x*2);
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m_output[dst++] = (byte)((pixel & 0x001F) * 0xFF / 0x001F);
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m_output[dst++] = (byte)((pixel & 0x07E0) * 0xFF / 0x07E0);
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m_output[dst++] = (byte)((pixel & 0xF800) * 0xFF / 0xF800);
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m_output[dst++] = layer.Alpha[a+x];
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}
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src += frame.Stride;
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a += frame.AlphaStride;
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}
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}
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void Flatten24bpp (Frame frame, Layer layer)
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{
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int src = 0;
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int dst = 0;
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int a = 0;
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int gap = frame.Stride - frame.Width * 3;
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for (int y = 0; y < frame.Height; ++y)
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{
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for (int x = 0; x < frame.Width; ++x)
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{
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m_output[dst++] = layer.Pixels[src++];
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m_output[dst++] = layer.Pixels[src++];
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m_output[dst++] = layer.Pixels[src++];
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m_output[dst++] = layer.Alpha[a+x];
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}
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src += gap;
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a += frame.AlphaStride;
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}
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}
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void Flatten32bpp (Frame frame, Layer layer)
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{
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int src = 0;
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int dst = 0;
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int a = 0;
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for (int y = 0; y < frame.Height; ++y)
|
|
{
|
|
for (int x = 0; x < frame.Width; ++x)
|
|
{
|
|
m_output[dst++] = layer.Pixels[src];
|
|
m_output[dst++] = layer.Pixels[src+1];
|
|
m_output[dst++] = layer.Pixels[src+2];
|
|
m_output[dst++] = layer.Alpha[a+x];
|
|
src += 4;
|
|
}
|
|
a += frame.AlphaStride;
|
|
}
|
|
}
|
|
|
|
void ShuffleBlocks (int[] refs, int count)
|
|
{
|
|
var copy = refs.Clone() as int[];
|
|
int src = 0;
|
|
foreach (var index in RandomSequence (count, m_key))
|
|
{
|
|
refs[index*2] = copy[src++];
|
|
refs[index*2+1] = copy[src++];
|
|
}
|
|
}
|
|
|
|
static IEnumerable<int> RandomSequence (int count, uint seed)
|
|
{
|
|
var tp = new TpRandom (seed);
|
|
var order = Enumerable.Range (0, count).ToList<int>();
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
int n = (int)(tp.GetRand32() % (uint)order.Count);
|
|
yield return order[n];
|
|
order.RemoveAt (n);
|
|
}
|
|
}
|
|
|
|
#region IDisposable Members
|
|
public void Dispose ()
|
|
{
|
|
}
|
|
#endregion
|
|
}
|
|
}
|