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235 lines
9.1 KiB
C#
235 lines
9.1 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 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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}
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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 (Stream stream)
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{
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using (var input = new ArcView.Reader (stream))
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{
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input.ReadUInt32();
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int count = input.ReadInt32();
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if (count < 0 || count > 0xfffff)
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return null;
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uint first_offset = input.ReadUInt32();
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if (0 == first_offset)
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return null;
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input.BaseStream.Position = first_offset;
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var info = new S25MetaData();
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info.Width = input.ReadUInt32();
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info.Height = input.ReadUInt32();
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info.OffsetX = input.ReadInt32();
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info.OffsetY = input.ReadInt32();
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info.FirstOffset = first_offset+0x14;
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info.BPP = 32;
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return info;
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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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var meta = info as S25MetaData;
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if (null == meta)
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throw new ArgumentException ("S25Format.Read should be supplied with S25MetaData", "info");
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using (var reader = new Reader (stream, meta))
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{
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var pixels = reader.Unpack();
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return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
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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 ("S25Format.Write not implemented");
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}
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internal class Reader : IDisposable
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{
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BinaryReader 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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uint[] m_rows;
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byte[] m_output;
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public byte[] Data { get { return m_output; } }
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public Reader (Stream 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_rows = new uint[m_height];
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m_output = new byte[m_width * m_height * 4];
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m_input = new ArcView.Reader (file);
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m_origin = info.FirstOffset;
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}
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public byte[] Unpack ()
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{
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m_input.BaseStream.Position = m_origin;
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for (int i = 0; i < m_rows.Length; ++i)
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m_rows[i] = m_input.ReadUInt32();
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int dst = 0;
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int stride = m_width * 4;
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for (int y = 0; y < m_height && dst != m_output.Length; ++y)
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{
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byte b, g, r, a;
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uint row_pos = m_rows[y];
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m_input.BaseStream.Position = row_pos;
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m_input.ReadUInt16();
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for (int x = m_width; x > 0 && dst != m_output.Length; )
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{
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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_pos;
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}
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int count = m_input.ReadUInt16();
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row_pos += 2;
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int method = count >> 13;
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int skip = (count & 0x1800) >> 11;
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if (0 != skip)
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{
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m_input.BaseStream.Seek (skip, SeekOrigin.Current);
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row_pos += (uint)skip;
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}
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count &= 0x7ff;
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if (count > x) count = x;
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x -= count;
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if (0 == method || 1 == method)
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{
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dst += count * 4;
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}
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else if (2 == method)
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{
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for (int i = 0; i < count; ++i)
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{
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m_output[dst++] = m_input.ReadByte();
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m_output[dst++] = m_input.ReadByte();
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m_output[dst++] = m_input.ReadByte();
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m_output[dst++] = 0xff;
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row_pos += 3;
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}
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}
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else if (3 == method)
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{
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b = m_input.ReadByte();
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g = m_input.ReadByte();
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r = m_input.ReadByte();
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row_pos += 3;
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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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}
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else if (4 == method)
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{
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for (int i = 0; i < count; ++i)
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{
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a = m_input.ReadByte();
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m_output[dst] += (byte)((m_input.ReadByte() - m_output[dst]) * a / 256);
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++dst;
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m_output[dst] += (byte)((m_input.ReadByte() - m_output[dst]) * a / 256);
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++dst;
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m_output[dst] += (byte)((m_input.ReadByte() - m_output[dst]) * a / 256);
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++dst;
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m_output[dst++] = a;
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row_pos += 4;
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}
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}
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else
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{
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row_pos += 4;
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a = m_input.ReadByte();
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b = m_input.ReadByte();
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g = m_input.ReadByte();
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r = m_input.ReadByte();
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for (int i = 0; i < count; ++i)
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{
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m_output[dst] += (byte)((b - m_output[dst]) * a / 256);
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++dst;
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m_output[dst] += (byte)((g - m_output[dst]) * a / 256);
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++dst;
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m_output[dst] += (byte)((r - m_output[dst]) * a / 256);
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++dst;
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m_output[dst++] = a;
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}
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}
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}
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}
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return m_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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Dispose (true);
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GC.SuppressFinalize (this);
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}
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protected virtual void Dispose (bool disposing)
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{
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if (!disposed)
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{
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if (disposing)
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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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}
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