mirror of
https://github.com/crskycode/GARbro.git
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271 lines
9.3 KiB
C#
271 lines
9.3 KiB
C#
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//! \file ImageG00.cs
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//! \date Mon Apr 18 14:06:48 2016
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//! \brief RealLive engine 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.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.RealLive
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{
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internal class G00MetaData : ImageMetaData
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{
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public int Type;
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}
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[Export(typeof(ImageFormat))]
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public class G00Format : ImageFormat
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{
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public override string Tag { get { return "G00"; } }
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public override string Description { get { return "RealLive engine image format"; } }
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public override uint Signature { get { return 0; } }
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public override ImageMetaData ReadMetaData (Stream stream)
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{
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int type = stream.ReadByte();
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if (type > 2)
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return null;
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using (var reader = new ArcView.Reader (stream))
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{
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uint width = reader.ReadUInt16();
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uint height = reader.ReadUInt16();
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if (0 == width || width > 0x8000 || 0 == height || height > 0x8000)
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return null;
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if (2 == type)
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{
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int count = reader.ReadInt32();
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if (count <= 0 || count > 0x100)
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return null;
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}
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else
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{
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uint length = reader.ReadUInt32();
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if (length + 5 != stream.Length)
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return null;
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}
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return new G00MetaData {
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Width = width,
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Height = height,
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BPP = 1 == type ? 8 : 24,
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Type = type,
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};
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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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using (var reader = new G00Reader (stream, (G00MetaData)info))
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{
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reader.Unpack();
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return ImageData.Create (info, reader.Format, reader.Palette, reader.Data);
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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 NotImplementedException ("G00Format.Write not implemented");
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}
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}
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internal class Tile
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{
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public int X;
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public int Y;
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public uint Offset;
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public int Length;
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}
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internal sealed class G00Reader : IDisposable
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{
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BinaryReader m_input;
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byte[] m_output;
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int m_width;
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int m_height;
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int m_type;
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int m_bytes_pp;
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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 G00Reader (Stream input, G00MetaData 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_type = info.Type;
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m_input = new ArcView.Reader (input);
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}
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public void Unpack ()
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{
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m_input.BaseStream.Position = 5;
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if (0 == m_type)
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UnpackV0();
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else if (1 == m_type)
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UnpackV1();
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else
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UnpackV2();
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}
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void UnpackV0 ()
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{
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m_bytes_pp = 3;
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m_output = LzDecompress (1);
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Format = PixelFormats.Bgr24;
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}
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void UnpackV1 ()
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{
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m_bytes_pp = 1;
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m_output = LzDecompress (2);
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int colors = LittleEndian.ToUInt16 (m_output, 0);
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int src = 2;
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var palette = new Color[colors];
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for (int i = 0; i < colors; ++i)
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{
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palette[i] = Color.FromArgb (m_output[src+3], m_output[src+2], m_output[src+1], m_output[src]);
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src += 4;
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}
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Palette = new BitmapPalette (palette);
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Format = PixelFormats.Indexed8;
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Buffer.BlockCopy (m_output, src, m_output, 0, m_output.Length-src);
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}
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void UnpackV2 ()
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{
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m_bytes_pp = 1;
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Format = PixelFormats.Bgra32;
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int tile_count = m_input.ReadInt32();
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var tiles = new List<Tile> (tile_count);
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for (int i = 0; i < tile_count; ++i)
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{
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var tile = new Tile();
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tile.X = m_input.ReadInt32();
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tile.Y = m_input.ReadInt32();
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tiles.Add (tile);
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m_input.BaseStream.Seek (0x10, SeekOrigin.Current);
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}
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using (var input = new MemoryStream (LzDecompress (2)))
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using (var reader = new BinaryReader (input))
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{
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if (reader.ReadInt32() != tile_count)
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throw new InvalidFormatException();
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int dst_stride = m_width * 4;
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m_output = new byte[m_height * dst_stride];
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for (int i = 0; i < tile_count; ++i)
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{
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tiles[i].Offset = reader.ReadUInt32();
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tiles[i].Length = reader.ReadInt32();
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}
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foreach (var tile in tiles)
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{
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if (0 == tile.Length)
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continue;
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input.Position = tile.Offset;
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int tile_type = reader.ReadUInt16();
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int count = reader.ReadUInt16();
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if (tile_type != 1)
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throw new InvalidFormatException();
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input.Seek (0x70, SeekOrigin.Current);
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for (int i = 0; i < count; ++i)
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{
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int tile_x = reader.ReadUInt16();
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int tile_y = reader.ReadUInt16();
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reader.ReadInt16();
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int tile_width = reader.ReadUInt16();
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int tile_height = reader.ReadUInt16();
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input.Seek (0x52, SeekOrigin.Current);
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tile_x += tile.X;
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tile_y += tile.Y;
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if (tile_x + tile_width > m_width || tile_y + tile_height > m_height)
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throw new InvalidFormatException();
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int dst = tile_y * dst_stride + tile_x * 4;
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int tile_stride = tile_width * 4;
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for (int row = 0; row < tile_height; ++row)
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{
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reader.Read (m_output, dst, tile_stride);
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dst += dst_stride;
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}
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}
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}
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}
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}
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byte[] LzDecompress (int min_count)
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{
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int packed_size = m_input.ReadInt32() - 8;
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int output_size = m_input.ReadInt32();
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var output = new byte[output_size];
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int dst = 0;
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int bits = 2;
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while (dst < output.Length && packed_size > 0)
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{
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bits >>= 1;
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if (1 == bits)
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{
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bits = m_input.ReadByte() | 0x100;
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--packed_size;
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}
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if (0 != (bits & 1))
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{
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m_input.Read (output, dst, m_bytes_pp);
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dst += m_bytes_pp;
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packed_size -= m_bytes_pp;
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}
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else
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{
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if (packed_size < 2)
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break;
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int offset = m_input.ReadUInt16();
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packed_size -= 2;
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int count = (offset & 0xF) + min_count;
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offset >>= 4;
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offset *= m_bytes_pp;
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count *= m_bytes_pp;
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Binary.CopyOverlapped (output, dst-offset, dst, count);
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dst += count;
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}
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}
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return output;
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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_input.Dispose();
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_disposed = true;
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}
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}
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#endregion
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}
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}
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