mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-25 12:24:12 +08:00
90 lines
3.6 KiB
C#
90 lines
3.6 KiB
C#
//! \file ImageDDS.cs
|
|
//! \date Thu Jul 23 18:12:05 2015
|
|
//! \brief Direct Draw Surface image format.
|
|
//
|
|
// Copyright (C) 2015 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 GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.Microsoft
|
|
{
|
|
internal class DdsMetaData : ImageMetaData
|
|
{
|
|
public int DataOffset;
|
|
public uint PixelFlags;
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class DdsFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "DDS"; } }
|
|
public override string Description { get { return "Direct Draw Surface format"; } }
|
|
public override uint Signature { get { return 0x20534444; } } // 'DDS'
|
|
|
|
public override ImageMetaData ReadMetaData (Stream stream)
|
|
{
|
|
var header = new byte[0x5C];
|
|
if (header.Length != stream.Read (header, 0, header.Length))
|
|
return null;
|
|
int dwSize = LittleEndian.ToInt32 (header, 4);
|
|
if (dwSize < 0x7C)
|
|
return null;
|
|
uint bitflag = LittleEndian.ToUInt32 (header, 0x50);
|
|
return new DdsMetaData
|
|
{
|
|
Width = LittleEndian.ToUInt32 (header, 0x10),
|
|
Height = LittleEndian.ToUInt32 (header, 0xC),
|
|
BPP = LittleEndian.ToInt32 (header, 0x58),
|
|
PixelFlags = LittleEndian.ToUInt32 (header, 0x50),
|
|
DataOffset = 4 + dwSize,
|
|
};
|
|
}
|
|
|
|
public override ImageData Read (Stream stream, ImageMetaData info)
|
|
{
|
|
var meta = info as DdsMetaData;
|
|
if (null == meta)
|
|
throw new System.ArgumentException ("DdsFormat.Read should be supplied with DdsMetaData", "info");
|
|
stream.Position = meta.DataOffset;
|
|
PixelFormat format;
|
|
if (24 == info.BPP)
|
|
format = PixelFormats.Bgr24;
|
|
else if (1 == (meta.PixelFlags & 1))
|
|
format = PixelFormats.Bgra32;
|
|
else
|
|
format = PixelFormats.Bgr32;
|
|
var pixels = new byte[info.Width*info.Height*((format.BitsPerPixel+7)/8)];
|
|
if (pixels.Length != stream.Read (pixels, 0, pixels.Length))
|
|
throw new InvalidFormatException ("Unexpected end of file");
|
|
return ImageData.Create (info, format, null, pixels);
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new System.NotImplementedException ("DdsFormat.Write not implemented");
|
|
}
|
|
}
|
|
}
|