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Malie DZI tiled images descriptor implementation.

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morkt 2015-07-11 10:28:39 +04:00
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//! \file ImageDZI.cs
//! \date Sat Jul 11 07:13:28 2015
//! \brief Malie DZI tiled images set.
//
// Copyright (C) 2015 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.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;
namespace GameRes.Formats.Malie
{
internal class DziTile
{
public int X, Y;
public string FileName;
}
internal class DziMetaData : ImageMetaData
{
public IEnumerable<IEnumerable<DziTile>> Tiles;
}
[Export(typeof(ImageFormat))]
public class DziFormat : ImageFormat
{
public override string Tag { get { return "DZI"; } }
public override string Description { get { return "Malie tiled image descriptor"; } }
public override uint Signature { get { return 0x0D495A44; } } // 'DZI'
static readonly Regex pair_re = new Regex (@"^(\d+),(\d+)");
public override ImageMetaData ReadMetaData (Stream stream)
{
var tex = new DirectoryInfo ("tex");
if (!tex.Exists)
return null;
using (var reader = new StreamReader (stream, Encoding.UTF8, false, 2048, true))
{
reader.ReadLine(); // skip signature
string line = reader.ReadLine();
if (null == line)
return null;
var match = pair_re.Match (line);
if (!match.Success)
return null;
uint width = Convert.ToUInt16 (match.Groups[1].Value);
uint height = Convert.ToUInt16 (match.Groups[2].Value);
line = reader.ReadLine();
if (null == line)
return null;
int count = Convert.ToInt16 (line);
if (0 == count)
return null;
var list = new List<IEnumerable<DziTile>> (count);
for (int i = 0; i < count; ++i)
{
line = reader.ReadLine();
if (null == line)
return null;
match = pair_re.Match (line);
if (!match.Success)
return null;
int block_w = Convert.ToUInt16 (match.Groups[1].Value);
int block_h = Convert.ToUInt16 (match.Groups[2].Value);
var tiles = new List<DziTile> (block_w * block_h);
int y = 0;
for (int j = 0; j < block_h; ++j)
{
int x = 0;
line = reader.ReadLine();
if (null == line)
return null;
line = line.TrimEnd();
foreach (var file in line.Split (','))
{
if (!string.IsNullOrEmpty (file))
tiles.Add (new DziTile { X = x, Y = y, FileName = Path.Combine (tex.Name, file + ".png") });
x += 256;
}
y += 256;
}
list.Add (tiles);
}
return new DziMetaData
{
Width = width,
Height = height,
BPP = 32,
Tiles = list,
};
}
}
public override ImageData Read (Stream stream, ImageMetaData info)
{
var meta = info as DziMetaData;
if (null == meta)
throw new ArgumentException ("DziFormat.Read should be supplied with DziMetaData", "info");
PixelFormat format = PixelFormats.Bgra32;
var bitmap = new WriteableBitmap ((int)meta.Width, (int)meta.Height, ImageData.DefaultDpiX,
ImageData.DefaultDpiY, format, null);
int actual_width = 0;
int actual_height = 0;
foreach (var tile in meta.Tiles.First())
{
using (var file = File.OpenRead (tile.FileName))
{
var decoder = new PngBitmapDecoder (file,
BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
var converted = new FormatConvertedBitmap (decoder.Frames[0], format, null, 0);
int stride = converted.PixelWidth * 4;
var pixels = new byte[stride * converted.PixelHeight];
converted.CopyPixels (pixels, stride, 0);
var width = Math.Min (converted.PixelWidth, bitmap.PixelWidth - tile.X);
var height = Math.Min (converted.PixelHeight, bitmap.PixelHeight - tile.Y);
var rect = new Int32Rect (tile.X, tile.Y, width, height);
bitmap.WritePixels (rect, pixels, stride, 0);
if (tile.X + width > actual_width)
actual_width = tile.X + width;
if (tile.Y + height > actual_height)
actual_height = tile.Y + height;
}
}
BitmapSource result = bitmap;
if (actual_width < bitmap.PixelWidth || actual_height < bitmap.PixelHeight)
{
var rect = new Int32Rect (0, 0, actual_width, actual_height);
result = new CroppedBitmap (bitmap, rect);
}
result.Freeze();
return new ImageData (result, meta);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("DziFormat.Write not implemented");
}
}
}