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(Legacy): GDT images.

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morkt 2018-01-04 18:17:16 +04:00
parent eae1509a12
commit 10ff376de2
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Legacy/Pochette/ImageGDT.cs Normal file
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//! \file ImageGDT.cs
//! \date 2018 Jan 04
//! \brief Pochette bitmap container.
//
// 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.ComponentModel.Composition;
using System.IO;
using System.Windows;
using System.Windows.Media.Imaging;
namespace GameRes.Formats.Pochette
{
internal class GdtMetaData : ImageMetaData
{
public uint BitmapOffset;
public string BaseLine;
}
[Export(typeof(ImageFormat))]
public class GdtFormat : ImageFormat
{
public override string Tag { get { return "GDT"; } }
public override string Description { get { return "Pochette bitmap container"; } }
public override uint Signature { get { return 0; } }
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (16);
int base_length = header[8];
if (base_length != 7 && base_length != 0)
return null;
var info = Bmp.ReadMetaData (file);
if (null == info)
return null;
string base_name = null;
if (base_length != 0)
{
base_name = header.GetCString (9, base_length);
if (string.IsNullOrWhiteSpace (base_name))
base_name = null;
}
return new GdtMetaData {
Width = info.Width,
Height = info.Height,
OffsetX = header.ToInt16 (0),
OffsetY = header.ToInt16 (2),
BPP = info.BPP,
BitmapOffset = 16,
BaseLine = base_name,
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var meta = (GdtMetaData)info;
var bitmap = ReadBitmapSource (file, meta);
if (null != meta.BaseLine)
bitmap = BlendBaseLine (bitmap, meta);
bitmap.Freeze();
return new ImageData (bitmap, info);
}
BitmapSource ReadBitmapSource (IBinaryStream file, GdtMetaData info)
{
using (var bmp = new StreamRegion (file.AsStream, info.BitmapOffset, true))
{
var decoder = new BmpBitmapDecoder (bmp,
BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
return decoder.Frames[0];
}
}
BitmapSource BlendBaseLine (BitmapSource overlay, GdtMetaData meta)
{
string base_name = VFS.ChangeFileName (meta.FileName, meta.BaseLine+".gdt");
if (!VFS.FileExists (base_name))
return overlay;
using (var base_file = VFS.OpenBinaryStream (base_name))
{
var base_info = ReadMetaData (base_file) as GdtMetaData;
if (null == base_info)
return overlay;
var base_image = ReadBitmapSource (base_file, base_info);
var canvas = new WriteableBitmap (base_image);
int canvas_bpp = canvas.Format.BitsPerPixel;
if (canvas_bpp != overlay.Format.BitsPerPixel)
overlay = new FormatConvertedBitmap (overlay, canvas.Format, null, 0);
canvas.Lock();
unsafe
{
byte* buffer = (byte*)canvas.BackBuffer;
int canvas_stride = canvas.BackBufferStride;
int canvas_size = canvas_stride * canvas.PixelHeight;
int overlay_stride = (overlay.PixelWidth * canvas_bpp + 7) / 8;
int overlay_size = overlay_stride * overlay.PixelHeight;
int pos = meta.OffsetY * canvas_stride + meta.OffsetX * canvas_bpp / 8;
overlay.CopyPixels (Int32Rect.Empty, (IntPtr)(buffer+pos), canvas_size-pos, canvas_stride);
}
var rect = new Int32Rect (meta.OffsetX, meta.OffsetY, overlay.PixelWidth, overlay.PixelHeight);
canvas.AddDirtyRect (rect);
canvas.Unlock();
return canvas;
}
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("GdtFormat.Write not implemented");
}
}
}