mirror of
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380 lines
14 KiB
C#
380 lines
14 KiB
C#
//! \file ImageS25.cs
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//! \date Sat Apr 18 17:00:54 2015
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//! \brief ShiinaRio S25 multi-image format.
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//
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// Copyright (C) 2015-2016 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;
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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.ShiinaRio
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{
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internal class S25MetaData : ImageMetaData
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{
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public uint FirstOffset;
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public bool Incremental;
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}
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[Export(typeof(ImageFormat))]
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public class S25Format : ImageFormat
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{
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public override string Tag { get { return "S25"; } }
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public override string Description { get { return "ShiinaRio image format"; } }
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public override uint Signature { get { return 0x00353253; } } // 'S25'
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// in current implementation, only the first frame is returned.
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// per-frame access is provided by S25Opener class.
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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file.Position = 4;
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int count = file.ReadInt32();
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if (count < 0 || count > 0xfffff)
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return null;
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uint first_offset = 0;
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for (int i = 0; i < count && 0 == first_offset; ++i)
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first_offset = file.ReadUInt32();
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if (0 == first_offset)
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return null;
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file.Position = first_offset;
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var info = new S25MetaData();
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info.Width = file.ReadUInt32();
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info.Height = file.ReadUInt32();
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info.OffsetX = file.ReadInt32();
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info.OffsetY = file.ReadInt32();
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info.FirstOffset = first_offset+0x14;
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info.Incremental = 0 != (file.ReadUInt32() & 0x80000000u);
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info.BPP = 32;
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return info;
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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using (var reader = new Reader (stream, (S25MetaData)info))
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return reader.Image;
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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 ("S25Format.Write not implemented");
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}
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internal sealed class Reader : IImageDecoder
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{
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IBinaryStream m_input;
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int m_width;
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int m_height;
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uint m_origin;
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byte[] m_output;
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bool m_incremental;
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ImageMetaData m_info;
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ImageData m_image;
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public Stream Source { get { m_input.Position = 0; return m_input.AsStream; } }
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public ImageFormat SourceFormat { get { return null; } }
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public ImageMetaData Info { get { return m_info; } }
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public ImageData Image
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{
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get
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{
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if (null == m_image)
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{
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var pixels = Unpack();
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m_image = ImageData.Create (m_info, PixelFormats.Bgra32, null, pixels);
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}
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return m_image;
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}
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}
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public byte[] Data { get { return m_output; } }
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public Reader (IBinaryStream file, S25MetaData 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_output = new byte[m_width * m_height * 4];
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m_input = file;
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m_origin = info.FirstOffset;
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m_incremental = info.Incremental;
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m_info = info;
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}
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public byte[] Unpack ()
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{
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m_input.Position = m_origin;
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if (m_incremental)
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return UnpackIncremental();
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var rows = new uint[m_height];
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for (int i = 0; i < rows.Length; ++i)
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rows[i] = m_input.ReadUInt32();
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var row_buffer = new byte[m_width];
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int dst = 0;
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for (int y = 0; y < m_height && dst < m_output.Length; ++y)
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{
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uint row_pos = rows[y];
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m_input.Position = row_pos;
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int row_length = m_input.ReadUInt16();
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row_pos += 2;
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if (0 != (row_pos & 1))
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{
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m_input.ReadByte();
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--row_length;
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}
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if (row_buffer.Length < row_length)
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row_buffer = new byte[row_length];
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m_input.Read (row_buffer, 0, row_length);
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dst = UnpackLine (row_buffer, dst);
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}
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return m_output;
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}
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void UpdateRepeatCount (Dictionary<uint, int> rows_count)
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{
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m_input.Position = 4;
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int count = m_input.ReadInt32();
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var frames = new List<uint> (count);
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for (int i = 0; i < count; ++i)
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{
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var offset = m_input.ReadUInt32();
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if (0 != offset)
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frames.Add (offset);
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}
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foreach (var offset in frames)
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{
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if (offset+0x14 == m_origin)
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continue;
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m_input.Position = offset+4;
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int height = m_input.ReadInt32();
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m_input.Position = offset+0x14;
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for (int i = 0; i < height; ++i)
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{
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var row_offset = m_input.ReadUInt32();
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if (rows_count.ContainsKey (row_offset))
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++rows_count[row_offset];
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}
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}
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}
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byte[] UnpackIncremental ()
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{
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var rows = new uint[m_height];
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var rows_count = new Dictionary<uint, int> (m_height);
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for (int i = 0; i < rows.Length; ++i)
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{
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uint offset = m_input.ReadUInt32();
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rows[i] = offset;
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if (rows_count.ContainsKey (offset))
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++rows_count[offset];
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else
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rows_count[offset] = 1;
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}
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UpdateRepeatCount (rows_count);
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var input_rows = new Dictionary<uint, byte[]> (m_height);
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var input_lines = new byte[m_height][];
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for (int y = 0; y < m_height; ++y)
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{
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uint row_pos = rows[y];
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if (input_rows.ContainsKey (row_pos))
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{
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input_lines[y] = input_rows[row_pos];
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continue;
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}
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var row = ReadLine (row_pos, rows_count[row_pos]);
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input_rows[row_pos] = row;
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input_lines[y] = row;
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}
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int dst = 0;
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foreach (var line in input_lines)
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{
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dst = UnpackLine (line, dst);
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}
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return m_output;
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}
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int UnpackLine (byte[] line, int dst)
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{
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int row_pos = 0;
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for (int x = m_width; x > 0 && dst < m_output.Length && row_pos < line.Length; )
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{
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if (0 != (row_pos & 1))
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{
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++row_pos;
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}
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int count = LittleEndian.ToUInt16 (line, row_pos);
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row_pos += 2;
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int method = count >> 13;
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int skip = (count >> 11) & 3;
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if (0 != skip)
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{
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row_pos += skip;
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}
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count &= 0x7ff;
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if (0 == count)
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{
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count = LittleEndian.ToInt32 (line, row_pos);
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row_pos += 4;
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}
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if (count > x) count = x;
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x -= count;
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byte b, g, r, a;
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switch (method)
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{
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case 2:
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for (int i = 0; i < count && row_pos < line.Length; ++i)
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{
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m_output[dst++] = line[row_pos++];
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m_output[dst++] = line[row_pos++];
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m_output[dst++] = line[row_pos++];
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m_output[dst++] = 0xff;
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}
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break;
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case 3:
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b = line[row_pos++];
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g = line[row_pos++];
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r = line[row_pos++];
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for (int i = 0; i < count; ++i)
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{
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m_output[dst++] = b;
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m_output[dst++] = g;
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m_output[dst++] = r;
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m_output[dst++] = 0xff;
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}
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break;
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case 4:
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for (int i = 0; i < count && row_pos < line.Length; ++i)
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{
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a = line[row_pos++];
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m_output[dst++] = line[row_pos++];
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m_output[dst++] = line[row_pos++];
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m_output[dst++] = line[row_pos++];
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m_output[dst++] = a;
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}
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break;
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case 5:
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a = line[row_pos++];
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b = line[row_pos++];
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g = line[row_pos++];
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r = line[row_pos++];
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for (int i = 0; i < count; ++i)
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{
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m_output[dst++] = b;
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m_output[dst++] = g;
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m_output[dst++] = r;
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m_output[dst++] = a;
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}
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break;
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default:
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dst += count * 4;
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break;
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}
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}
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return dst;
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}
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byte[] ReadLine (uint offset, int repeat)
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{
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m_input.Position = offset;
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int row_length = m_input.ReadUInt16();
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if (0 != (offset & 1))
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{
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m_input.ReadByte();
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--row_length;
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}
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var row = new byte[row_length];
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m_input.Read (row, 0, row.Length);
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int row_pos = 0;
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for (int x = m_width; x > 0; )
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{
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if (0 != (row_pos & 1))
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{
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++row_pos;
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}
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int count = LittleEndian.ToUInt16 (row, row_pos);
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row_pos += 2;
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int method = count >> 13;
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int skip = (count >> 11) & 3;
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if (0 != skip)
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{
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row_pos += skip;
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}
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count &= 0x7ff;
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if (0 == count)
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{
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count = LittleEndian.ToInt32 (row, row_pos);
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row_pos += 4;
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}
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if (count < 0 || count > x) count = x;
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x -= count;
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switch (method)
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{
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case 2:
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for (int j = 0; j < repeat; ++j)
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{
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for (int i = 3; i < count*3 && row_pos+i < row.Length; ++i)
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{
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row[row_pos+i] += row[row_pos+i-3];
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}
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}
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row_pos += count*3;
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break;
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case 3:
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row_pos += 3;
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break;
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case 4:
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for (int j = 0; j < repeat; ++j)
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{
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for (int i = 4; i < count*4 && row_pos+i < row.Length; ++i)
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{
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row[row_pos+i] += row[row_pos+i-4];
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}
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}
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row_pos += count*4;
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break;
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case 5:
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row_pos += 4;
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break;
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default:
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break;
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}
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}
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return row;
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}
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#region IDisposable Members
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public void Dispose ()
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{
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GC.SuppressFinalize (this);
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}
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#endregion
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}
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}
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}
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