GARbro-mirror/ArcFormats/BlackRainbow/ImageBMZ.cs

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//! \file ImageBMZ.cs
//! \date Wed Mar 04 11:48:31 2015
//! \brief Compressed bitmap image format.
//
// 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.ComponentModel.Composition;
using System.IO;
using System.Text;
using GameRes.Utility;
using GameRes.Compression;
namespace GameRes.Formats.BlackRainbow
{
[Export(typeof(ImageFormat))]
public class BmzFormat : BmpFormat
{
public override string Tag { get { return "BMZ"; } }
public override string Description { get { return "Compressed bitmap format"; } }
public override uint Signature { get { return 0x33434c5au; } } // 'ZLC3'
public override void Write (Stream file, ImageData image)
{
using (var bmp = new MemoryStream())
{
base.Write (bmp, image);
using (var output = new BinaryWriter (file, Encoding.ASCII, true))
{
output.Write (Signature);
output.Write ((uint)bmp.Length);
}
bmp.Position = 0;
using (var zstream = new ZLibStream (file, CompressionMode.Compress, CompressionLevel.Level9, true))
bmp.CopyTo (zstream);
}
}
public override ImageMetaData ReadMetaData (Stream stream)
{
var header = new byte[8];
if (header.Length != stream.Read (header, 0, header.Length))
return null;
using (var zstream = new ZLibStream (stream, CompressionMode.Decompress, true))
return base.ReadMetaData (zstream);
}
public override ImageData Read (Stream stream, ImageMetaData info)
{
stream.Seek (8, SeekOrigin.Current);
using (var zstream = new ZLibStream (stream, CompressionMode.Decompress, true))
using (var input = new SeekableStream (zstream))
return base.Read (input, info);
}
}
}