GARbro-mirror/ArcFormats/ShiinaRio/ImageS25.cs

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