GARbro-mirror/ArcFormats/Musica/ArcSQZ.cs

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//! \file ArcSQZ.cs
//! \date Sun Oct 09 03:29:54 2016
//! \brief Musica engine multi-frame images.
//
// Copyright (C) 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.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
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using GameRes.Compression;
namespace GameRes.Formats.Musica
{
internal class SqzArchive : ArcFile
{
public readonly ImageMetaData Info;
public SqzArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, ImageMetaData info)
: base (arc, impl, dir)
{
Info = info;
}
}
[Export(typeof(ArchiveFormat))]
public class SqzOpener : ArchiveFormat
{
public override string Tag { get { return "SQZ"; } }
public override string Description { get { return "Musica engine animated frames"; } }
public override uint Signature { get { return 0x315A5153; } } // 'SQZ1'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
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public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (0x10) * 2;
if (!IsSaneCount (count))
return null;
var info = new ImageMetaData
{
Width = file.View.ReadUInt32 (8),
Height = file.View.ReadUInt32 (0xC),
BPP = 32,
// BPP = file.View.ReadInt32 (4),
};
var base_name = Path.GetFileNameWithoutExtension (file.Name);
uint index_offset = 0x14;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = new Entry {
Name = string.Format ("{0}#{1:D4}", base_name, i),
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Type = "image",
Offset = file.View.ReadUInt32 (index_offset),
Size = file.View.ReadUInt32 (index_offset+4),
};
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 8;
}
return new SqzArchive (file, this, dir, info);
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
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{
var sqarc = (SqzArchive)arc;
var input = arc.File.CreateStream (entry.Offset, entry.Size);
var zs = new ZLibStream (input, CompressionMode.Decompress);
return new SqzReader (zs, sqarc.Info);
}
internal sealed class SqzReader : IImageDecoder
{
Stream m_input;
ImageMetaData m_info;
ImageData m_image;
public Stream Source { get { return m_input; } }
public ImageFormat SourceFormat { get { return null; } }
public ImageMetaData Info { get { return m_info; } }
public ImageData Image
{
get
{
if (null == m_image)
{
var pixels = new byte[m_info.Width * m_info.Height * 4];
m_input.Read (pixels, 0, pixels.Length);
m_image = ImageData.Create (m_info, PixelFormats.Bgra32, null, pixels);
}
return m_image;
}
}
public SqzReader (Stream input, ImageMetaData info)
{
m_input = input;
m_info = info;
}
bool m_disposed = false;
public void Dispose ()
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{
if (!m_disposed)
{
m_input.Dispose();
m_disposed = true;
}
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}
}
}
}