174 lines
6.7 KiB
C#

//! \file ArcGALX.cs
//! \date 2018 Feb 24
//! \brief Multi-frame GALX image.
//
// Copyright (C) 2018 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.Xml;
namespace GameRes.Formats.LiveMaker
{
internal class GalXEntry : Entry
{
public GalReader.Frame Frame;
public GalXMetaData Info;
public bool AlphaOn;
}
[Export(typeof(ArchiveFormat))]
public class GalXOpener : ArchiveFormat
{
public override string Tag { get { return "GAL/X"; } }
public override string Description { get { return "LiveMaker engine multi-frame image"; } }
public override uint Signature { get { return 0x656C6147; } } // 'GaleX200'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (4, "X200"))
return null;
using (var gal = file.CreateStream())
{
var info = GalXFormat.ReadMetaData (gal) as GalXMetaData;
if (null == info || !IsSaneCount (info.FrameCount))
return null;
var base_name = Path.GetFileNameWithoutExtension (file.Name);
gal.Position = info.DataOffset;
var dir = new List<Entry> (info.FrameCount);
foreach (XmlNode node in info.FrameXml.SelectNodes ("Frame"))
{
var layers = node.SelectSingleNode ("Layers");
var attr = layers.Attributes;
int layer_count = Int32.Parse (attr["Count"].Value);
var frame = new GalReader.Frame (layer_count);
frame.Width = Int32.Parse (attr["Width"].Value);
frame.Height = Int32.Parse (attr["Height"].Value);
frame.BPP = Int32.Parse (attr["Bpp"].Value);
frame.SetStride();
var entry = new GalXEntry {
Name = string.Format ("{0}#{1:D4}", base_name, dir.Count),
Type = "image",
Offset = gal.Position,
Frame = frame,
Info = info,
};
if (frame.BPP <= 8)
gal.Seek ((1 << frame.BPP) * 4, SeekOrigin.Current);
bool alpha_set = false;
foreach (XmlNode layer in layers.SelectNodes ("Layer"))
{
attr = layer.Attributes;
bool alpha_on = attr["AlphaOn"].Value != "0";
uint layer_size = gal.ReadUInt32();
gal.Seek (layer_size, SeekOrigin.Current);
if (alpha_on)
{
uint alpha_size = gal.ReadUInt32();
gal.Seek (alpha_size, SeekOrigin.Current);
}
if (!alpha_set)
{
entry.AlphaOn = alpha_on;
alpha_set = true;
}
}
entry.Size = (uint)(gal.Position - entry.Offset);
dir.Add (entry);
}
return new ArcFile (file, this, dir);
}
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
var galx = (GalXEntry)entry;
var input = arc.File.CreateStream (entry.Offset, entry.Size);
return new GalXDecoder (input, galx);
}
static readonly ResourceInstance<GalXFormat> s_GalXFormat = new ResourceInstance<GalXFormat> ("GAL/X200");
GalXFormat GalXFormat { get { return s_GalXFormat.Value; } }
}
internal class GalXDecoder : GalXReader, IImageDecoder
{
ImageData m_image;
bool m_alpha_on;
public Stream Source { get { m_input.Position = 0; return m_input.AsStream; } }
public ImageFormat SourceFormat { get { return null; } }
public ImageMetaData Info { get { return m_info; } }
public ImageData Image {
get {
if (null == m_image)
{
UnpackFrame();
m_image = ImageData.Create (Info, Format, Palette, Data, Stride);
}
return m_image;
}
}
public GalXDecoder (IBinaryStream input, GalXEntry entry) : base (input, entry.Info, 0)
{
m_frames.Add (entry.Frame);
m_alpha_on = entry.AlphaOn;
}
internal void UnpackFrame ()
{
var frame = m_frames[0];
frame.Layers.Clear();
m_input.Position = 0;
if (frame.BPP <= 8)
frame.Palette = ImageFormat.ReadColorMap (m_input.AsStream, 1 << frame.BPP);
int layer_size = m_input.ReadInt32();
var layer = new Layer();
layer.Pixels = UnpackLayer (frame, layer_size);
if (m_alpha_on)
{
int alpha_size = m_input.ReadInt32();
layer.Alpha = UnpackLayer (frame, alpha_size, true);
}
frame.Layers.Add (layer);
Flatten (0);
}
bool m_disposed = false;
protected override void Dispose (bool disposing)
{
if (disposing && !m_disposed)
{
m_input.Dispose();
m_disposed = true;
}
}
}
}