GARbro-mirror/ArcFormats/Qlie/ImageARGB.cs

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2022-04-29 17:22:03 +08:00
//! \file ImageARGB.cs
//! \date 2022 Apr 22
//! \brief QLIE image format.
//
// Copyright (C) 2022 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.Windows.Media;
using System.Windows.Media.Imaging;
namespace GameRes.Formats.Qlie
{
internal class ArgbMetaData : ImageMetaData
{
public uint ImageOffset;
public uint ImageLength;
public uint MaskLength;
}
[Export(typeof(ImageFormat))]
public class ArgbFormat : ImageFormat
{
public override string Tag { get { return "ARGB"; } }
public override string Description { get { return "QLIE image format"; } }
public override uint Signature { get { return 0x42475241; } } // 'ARGB'
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x19);
if (!header.AsciiEqual ("ARGBSaveData1\0") || header[0x10] != 3)
return null;
const uint image_offset = 0x19;
uint image_size = header.ToUInt32 (0x11);
uint mask_size = header.ToUInt32 (0x15);
using (var jpeg = OpenStreamRegion (file, image_offset, image_size))
{
var info = Jpeg.ReadMetaData (jpeg);
if (null == info)
return null;
return new ArgbMetaData {
Width = info.Width,
Height = info.Height,
BPP = 32,
ImageOffset = image_offset,
ImageLength = image_size,
MaskLength = mask_size,
};
}
}
internal IBinaryStream OpenStreamRegion (IBinaryStream file, long offset, uint length)
{
var input = new StreamRegion (file.AsStream, offset, length, true);
return new BinaryStream (input, file.Name);
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var meta = (ArgbMetaData)info;
file.Position = meta.ImageOffset;
var jpeg = new JpegBitmapDecoder (file.AsStream, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
BitmapSource bitmap = jpeg.Frames[0];
file.Position = meta.ImageOffset + meta.ImageLength;
var png = new PngBitmapDecoder (file.AsStream, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
BitmapSource mask = png.Frames[0];
if (mask.PixelWidth != bitmap.PixelWidth || mask.PixelHeight != bitmap.PixelHeight)
throw new InvalidFormatException ("ARGB bitmap and mask dimensions mismatch");
if (bitmap.Format.BitsPerPixel != 32)
bitmap = new FormatConvertedBitmap (bitmap, PixelFormats.Bgr32, null, 0);
int stride = bitmap.PixelWidth * 4;
var pixels = new byte[stride * bitmap.PixelHeight];
bitmap.CopyPixels (pixels, stride, 0);
if (mask.Format.BitsPerPixel != 8)
mask = new FormatConvertedBitmap (mask, PixelFormats.Gray8, null, 0);
var alpha = new byte[mask.PixelWidth * mask.PixelHeight];
mask.CopyPixels (alpha, mask.PixelWidth, 0);
int src = 0;
for (int dst = 3; dst < pixels.Length; dst += 4)
{
pixels[dst] = alpha[src++];
}
return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("ArgbFormat.Write not implemented");
}
}
}