//! \file ImageG00.cs //! \date Mon Apr 18 14:06:48 2016 //! \brief RealLive engine image format. // // Copyright (C) 2016 by morkt // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to // deal in the Software without restriction, including without limitation the // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or // sell copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS // IN THE SOFTWARE. // using System; using System.Collections.Generic; using System.ComponentModel.Composition; using System.IO; using System.Windows.Media; using System.Windows.Media.Imaging; using GameRes.Utility; namespace GameRes.Formats.RealLive { internal class G00MetaData : ImageMetaData { public int Type; } [Export(typeof(ImageFormat))] public class G00Format : ImageFormat { public override string Tag { get { return "G00"; } } public override string Description { get { return "RealLive engine image format"; } } public override uint Signature { get { return 0; } } public override ImageMetaData ReadMetaData (Stream stream) { int type = stream.ReadByte(); if (type > 2) return null; using (var reader = new ArcView.Reader (stream)) { uint width = reader.ReadUInt16(); uint height = reader.ReadUInt16(); if (0 == width || width > 0x8000 || 0 == height || height > 0x8000) return null; if (2 == type) { int count = reader.ReadInt32(); if (count <= 0 || count > 0x100) return null; } else { uint length = reader.ReadUInt32(); if (length + 5 != stream.Length) return null; } return new G00MetaData { Width = width, Height = height, BPP = 1 == type ? 8 : 24, Type = type, }; } } public override ImageData Read (Stream stream, ImageMetaData info) { using (var reader = new G00Reader (stream, (G00MetaData)info)) { reader.Unpack(); return ImageData.Create (info, reader.Format, reader.Palette, reader.Data); } } public override void Write (Stream file, ImageData image) { throw new NotImplementedException ("G00Format.Write not implemented"); } } internal class Tile { public int X; public int Y; public uint Offset; public int Length; } internal sealed class G00Reader : IDisposable { BinaryReader m_input; byte[] m_output; int m_width; int m_height; int m_type; int m_bytes_pp; public byte[] Data { get { return m_output; } } public PixelFormat Format { get; private set; } public BitmapPalette Palette { get; private set; } public G00Reader (Stream input, G00MetaData info) { m_width = (int)info.Width; m_height = (int)info.Height; m_type = info.Type; m_input = new ArcView.Reader (input); } public void Unpack () { m_input.BaseStream.Position = 5; if (0 == m_type) UnpackV0(); else if (1 == m_type) UnpackV1(); else UnpackV2(); } void UnpackV0 () { m_bytes_pp = 3; m_output = LzDecompress (1); Format = PixelFormats.Bgr24; } void UnpackV1 () { m_bytes_pp = 1; m_output = LzDecompress (2); int colors = LittleEndian.ToUInt16 (m_output, 0); int src = 2; var palette = new Color[colors]; for (int i = 0; i < colors; ++i) { palette[i] = Color.FromArgb (m_output[src+3], m_output[src+2], m_output[src+1], m_output[src]); src += 4; } Palette = new BitmapPalette (palette); Format = PixelFormats.Indexed8; Buffer.BlockCopy (m_output, src, m_output, 0, m_output.Length-src); } void UnpackV2 () { m_bytes_pp = 1; Format = PixelFormats.Bgra32; int tile_count = m_input.ReadInt32(); var tiles = new List (tile_count); for (int i = 0; i < tile_count; ++i) { var tile = new Tile(); tile.X = m_input.ReadInt32(); tile.Y = m_input.ReadInt32(); tiles.Add (tile); m_input.BaseStream.Seek (0x10, SeekOrigin.Current); } using (var input = new MemoryStream (LzDecompress (2))) using (var reader = new BinaryReader (input)) { if (reader.ReadInt32() != tile_count) throw new InvalidFormatException(); int dst_stride = m_width * 4; m_output = new byte[m_height * dst_stride]; for (int i = 0; i < tile_count; ++i) { tiles[i].Offset = reader.ReadUInt32(); tiles[i].Length = reader.ReadInt32(); } foreach (var tile in tiles) { if (0 == tile.Length) continue; input.Position = tile.Offset; int tile_type = reader.ReadUInt16(); int count = reader.ReadUInt16(); if (tile_type != 1) throw new InvalidFormatException(); input.Seek (0x70, SeekOrigin.Current); for (int i = 0; i < count; ++i) { int tile_x = reader.ReadUInt16(); int tile_y = reader.ReadUInt16(); reader.ReadInt16(); int tile_width = reader.ReadUInt16(); int tile_height = reader.ReadUInt16(); input.Seek (0x52, SeekOrigin.Current); tile_x += tile.X; tile_y += tile.Y; if (tile_x + tile_width > m_width || tile_y + tile_height > m_height) throw new InvalidFormatException(); int dst = tile_y * dst_stride + tile_x * 4; int tile_stride = tile_width * 4; for (int row = 0; row < tile_height; ++row) { reader.Read (m_output, dst, tile_stride); dst += dst_stride; } } } } } byte[] LzDecompress (int min_count) { int packed_size = m_input.ReadInt32() - 8; int output_size = m_input.ReadInt32(); var output = new byte[output_size]; int dst = 0; int bits = 2; while (dst < output.Length && packed_size > 0) { bits >>= 1; if (1 == bits) { bits = m_input.ReadByte() | 0x100; --packed_size; } if (0 != (bits & 1)) { m_input.Read (output, dst, m_bytes_pp); dst += m_bytes_pp; packed_size -= m_bytes_pp; } else { if (packed_size < 2) break; int offset = m_input.ReadUInt16(); packed_size -= 2; int count = (offset & 0xF) + min_count; offset >>= 4; offset *= m_bytes_pp; count *= m_bytes_pp; Binary.CopyOverlapped (output, dst-offset, dst, count); dst += count; } } return output; } #region IDisposable Members bool _disposed = false; public void Dispose () { if (!_disposed) { m_input.Dispose(); _disposed = true; } } #endregion } }