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248 lines
8.3 KiB
C#
248 lines
8.3 KiB
C#
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//! \file ImageCLS.cs
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//! \date 2017 Dec 21
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//! \brief Lambda engine image format.
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//
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// Copyright (C) 2017-2018 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.Utility;
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namespace GameRes.Formats.Lambda
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{
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internal class ClsMetaData : ImageMetaData
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{
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public int FrameOffset;
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}
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[Export(typeof(ImageFormat))]
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public class ClsFormat : ImageFormat
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{
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public override string Tag { get { return "CLS"; } }
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public override string Description { get { return "Lambda engine image format"; } }
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public override uint Signature { get { return 0x5F534C43; } } // 'CLS_'
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public ClsFormat ()
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{
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Extensions = new string[] { "" };
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}
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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var header = file.ReadHeader (0x18);
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if (!header.AsciiEqual ("CLS_TEXFILE"))
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return null;
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file.Position = header.ToUInt32 (0x14);
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int frame_offset = file.ReadInt32();
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file.Position = frame_offset+4;
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if (file.ReadUInt16() != 1)
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return null;
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file.Position = frame_offset+0x1C;
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uint width = file.ReadUInt32();
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uint height = file.ReadUInt32();
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int x = file.ReadInt32();
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int y = file.ReadInt32();
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file.Position = frame_offset+0x30;
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if (file.ReadByte() != 1)
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return null;
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int format = file.ReadByte();
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if (format != 4 && format != 5 && format != 2)
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return null;
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return new ClsMetaData {
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Width = width,
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Height = height,
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OffsetX = x,
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OffsetY = y,
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BPP = 8 * (format - 1),
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FrameOffset = frame_offset,
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};
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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var reader = new ClsReader (file, (ClsMetaData)info);
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var pixels = reader.Unpack();
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return ImageData.Create (info, reader.Format, reader.Palette, pixels);
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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 ("ClsFormat.Write not implemented");
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}
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}
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internal class ClsReader
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{
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IBinaryStream m_input;
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byte[] m_channel;
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int m_width;
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int m_height;
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int m_channels;
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int m_base_offset;
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int[] m_rows_sizes;
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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 ClsReader (IBinaryStream input, ClsMetaData info)
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{
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m_input = input;
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m_base_offset = info.FrameOffset;
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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m_channels = info.BPP / 8;
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if (1 == m_channels)
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Format = PixelFormats.Indexed8;
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else if (4 == m_channels)
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Format = PixelFormats.Bgra32;
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else
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Format = PixelFormats.Bgr32;
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m_channel = new byte[m_width * m_height];
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m_rows_sizes = new int[m_height];
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}
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static readonly byte[] ChannelOrder = { 2, 1, 0, 3 };
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public byte[] Unpack ()
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{
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SetPosition (0x48);
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var offsets = new int[m_channels];
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for (int i = 0; i < m_channels; ++i)
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offsets[i] = m_input.ReadInt32();
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SetPosition (0x58);
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var sizes = new int[m_channels];
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for (int i = 0; i < m_channels; ++i)
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sizes[i] = m_input.ReadInt32();
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if (1 == m_channels)
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{
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SetPosition (0x68);
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int palette_offset = m_input.ReadInt32();
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int palette_size = m_input.ReadInt32();
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SetPosition (palette_offset);
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Palette = ImageFormat.ReadPalette (m_input.AsStream, palette_size / 4, PaletteFormat.BgrA);
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SetPosition (offsets[0]);
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UnpackChannel (sizes[0]);
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return m_channel;
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}
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var output = new byte[m_width * m_height * 4];
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for (int i = 0; i < m_channels; ++i)
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{
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SetPosition (offsets[i]);
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UnpackChannel (sizes[i]);
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int src = 0;
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for (int dst = ChannelOrder[i]; dst < output.Length; dst += 4)
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{
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output[dst] = m_channel[src++];
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}
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}
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return output;
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}
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void SetPosition (int pos)
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{
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m_input.Position = m_base_offset + pos;
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}
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void UnpackChannel (int size)
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{
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int method = Binary.BigEndian (m_input.ReadUInt16());
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if (method > 1)
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throw new InvalidFormatException();
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size -= 2;
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if (0 == method)
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ReadV0 (size);
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else
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ReadV1 (size);
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}
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void ReadV0 (int size)
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{
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int row_width = size / m_height;
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if (row_width == m_width)
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{
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m_input.Read (m_channel, 0, m_channel.Length);
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}
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else
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{
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int dst = 0;
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for (int y = 0; y < m_height; ++y)
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{
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m_input.Read (m_channel, dst, row_width);
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dst += m_width;
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}
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}
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}
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void ReadV1 (int size)
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{
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int row_count = 0;
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while (size > 0)
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{
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int chunk_size = Binary.BigEndian (m_input.ReadUInt16());
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if (row_count < m_height)
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{
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m_rows_sizes[row_count++] = chunk_size;
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}
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size -= chunk_size + 2;
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}
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if (size < 0)
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throw new InvalidFormatException();
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int dst = 0;
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for (int y = 0; y < row_count; ++y)
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{
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int width = m_width;
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int chunk_size = m_rows_sizes[y];
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while (chunk_size --> 0)
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{
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byte rle = m_input.ReadUInt8();
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if (rle < 0x81)
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{
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int count = rle + 1;
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width -= count;
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chunk_size -= count;
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m_input.Read (m_channel, 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 count = 0x101 - rle;
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width -= count;
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--chunk_size;
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byte v = m_input.ReadUInt8();
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while (count --> 0)
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{
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m_channel[dst++] = v;
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}
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}
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}
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while (width --> 0)
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m_channel[dst++] = 0;
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}
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}
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}
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}
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