GARbro-mirror/ArcFormats/GameSystem/ArcCHR.cs

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//! \file ArcCHR.cs
//! \date Mon Jan 16 20:15:54 2017
//! \brief 'Game System' character image format.
//
// Copyright (C) 2017 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.Media;
namespace GameRes.Formats.GameSystem
{
[Export(typeof(ArchiveFormat))]
public class ChrOpener : ArchiveFormat
{
public override string Tag { get { return "CHR/GAMESYSTEM"; } }
public override string Description { get { return "'Game System' character frames"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
static readonly Lazy<ImageFormat> s_ChrFormat = new Lazy<ImageFormat> (() => ImageFormat.FindByTag ("CHR"));
public override ArcFile TryOpen (ArcView file)
{
if (!file.Name.EndsWith (".CHR", StringComparison.InvariantCultureIgnoreCase)
|| file.View.ReadUInt32 (0) != file.MaxOffset)
return null;
using (var input = file.CreateStream())
{
var info = s_ChrFormat.Value.ReadMetaData (input) as ChrMetaData;
if (null == info)
return null;
input.Position = info.RgbSize;
uint overlay_size = input.ReadUInt32();
if (0 == overlay_size)
return null;
input.ReadInt32();
int count = input.ReadInt32();
if (!IsSaneCount (count))
return null;
int x = input.ReadInt16();
int y = input.ReadInt16();
int w = input.ReadInt16();
int h = input.ReadInt16() * count;
var frame_info = new ImageMetaData
{
Width = (uint)w, Height = (uint)h, OffsetX = x, OffsetY = y, BPP = 32
};
var base_name = Path.GetFileNameWithoutExtension (file.Name);
var dir = new List<Entry> (2);
var entry = new ChrEntry
{
Name = string.Format ("{0}#00", base_name),
Offset = 0,
Size = (uint)info.RgbSize,
Info = info,
};
dir.Add (entry);
entry = new ChrEntry
{
Name = string.Format ("{0}#01", base_name),
Offset = info.RgbSize+4,
Size = overlay_size,
Info = frame_info,
};
dir.Add (entry);
return new ArcFile (file, this, dir);
}
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
var cent = (ChrEntry)entry;
var input = arc.File.CreateStream (entry.Offset, entry.Size);
if (cent.Info is ChrMetaData)
return new ChrDecoder (input, cent.Info);
else
return new ChrFrameDecoder (input, cent.Info);
}
}
internal class ChrEntry : Entry
{
public override string Type { get { return "image"; } }
public ImageMetaData Info;
}
internal class ChrDecoder : BinaryImageDecoder
{
public ChrDecoder (IBinaryStream input, ImageMetaData info) : base (input, info)
{ }
protected override ImageData GetImageData ()
{
var reader = new ChrReader (m_input, (ChrMetaData)Info);
var pixels = reader.UnpackBaseline();
return ImageData.CreateFlipped (Info, PixelFormats.Bgra32, null, pixels, reader.Stride);
}
}
internal class ChrFrameDecoder : BinaryImageDecoder
{
public ChrFrameDecoder (IBinaryStream input, ImageMetaData info) : base (input, info)
{ }
protected override ImageData GetImageData ()
{
m_input.Position = 0x10;
int stride = (int)Info.Width * 4;
var pixels = new byte[stride * (int)Info.Height];
m_input.Read (pixels, 0, pixels.Length);
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for (int i = 3; i < pixels.Length; i += 4)
pixels[i] = (byte)(pixels[i] * 0xFF / 0x80);
return ImageData.CreateFlipped (Info, PixelFormats.Bgra32, null, pixels, stride);
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}
}
}