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static private LoadWithCodecs ( Stream stream, int decodeWidth, int decodeHeight, double scale, bool isDDS ) : List |
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| stream | Stream | Stream containing entire file. NOT just pixels. |
| decodeWidth | int | Width to decode as. Aspect ratio unchanged if decodeHeight = 0. |
| decodeHeight | int | Height to decode as. Aspect ratio unchanged if decodeWidth = 0. |
| scale | double | DOMINANT. DecodeWidth and DecodeHeight ignored if this is > 0. Amount to scale by. Range 0-1. |
| isDDS | bool | True = image is a DDS. |
| return | List |
|
internal static List<MipMap> LoadWithCodecs(Stream stream, int decodeWidth, int decodeHeight, double scale, bool isDDS)
{
if (isDDS && !ImageEngine.WindowsWICCodecsAvailable)
return null;
bool alternateDecodeDimensions = decodeHeight != 0 || decodeWidth != 0 || scale != 0;
int alternateWidth = decodeWidth;
int alternateHeight = decodeHeight;
List<MipMap> mipmaps = new List<MipMap>();
if (isDDS)
{
// KFreon: Attempt to load any mipmaps
stream.Seek(0, SeekOrigin.Begin);
var decoder = BitmapDecoder.Create(stream, BitmapCreateOptions.IgnoreColorProfile, BitmapCacheOption.OnDemand);
// Setup alternateDimensions if required
if (scale != 0)
{
alternateHeight = (int)(decoder.Frames[0].Height * scale);
alternateWidth = (int)(decoder.Frames[0].Width * scale);
}
foreach (var mipmap in decoder.Frames)
{
// KFreon: Skip mipmaps that are too big if asked to load a smaller image
if (alternateDecodeDimensions)
{
if (mipmap.Width > alternateWidth || mipmap.Height > alternateHeight)
continue;
}
mipmaps.Add(new MipMap(mipmap.GetPixelsAsBGRA32(), mipmap.PixelWidth, mipmap.PixelHeight));
}
if (mipmaps.Count == 0)
{
// KFreon: Image has no mips, so resize largest
var frame = decoder.Frames[0];
var mip = new MipMap(frame.GetPixelsAsBGRA32(), frame.PixelWidth, frame.PixelHeight);
mip = ImageEngine.Resize(mip, scale);
mipmaps.Add(mip);
}
}
else
{
// KFreon: No Mipmaps
BitmapImage bmp = AttemptUsingWindowsCodecs(stream, alternateWidth, alternateHeight);
if (bmp == null)
return null;
bmp.Freeze();
mipmaps.Add(new MipMap(bmp.GetPixelsAsBGRA32(), bmp.PixelWidth, bmp.PixelHeight));
}
return mipmaps;
}
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WIC_Codecs::LoadWithCodecs ( string imageFile, int decodeWidth, int decodeHeight, double scale, bool isDDS ) : List |
internal static List <MipMap> LoadImage(byte[] rawDDSData, ImageEngineFormat surfaceFormat, int width, int height, out DDSGeneral.DDS_HEADER header)
{
header = DDSGeneral.Build_DDS_Header(1, height, width, surfaceFormat);
List <MipMap> MipMaps = null;
// Create new fully formatted DDS i.e. one with a header.
MemoryStream stream = new MemoryStream();
BinaryWriter bw = new BinaryWriter(stream);
DDSGeneral.Write_DDS_Header(header, bw);
bw.Write(rawDDSData);
switch (surfaceFormat)
{
case ImageEngineFormat.DDS_DXT1:
case ImageEngineFormat.DDS_DXT2:
case ImageEngineFormat.DDS_DXT3:
case ImageEngineFormat.DDS_DXT4:
case ImageEngineFormat.DDS_DXT5:
if (WindowsWICCodecsAvailable)
{
MipMaps = WIC_Codecs.LoadWithCodecs(stream, 0, 0, true);
}
else
{
MipMaps = DDSGeneral.LoadDDS(stream, header, new Format(surfaceFormat), 0);
}
break;
case ImageEngineFormat.DDS_ARGB:
case ImageEngineFormat.DDS_A8L8:
case ImageEngineFormat.DDS_RGB:
case ImageEngineFormat.DDS_ATI1:
case ImageEngineFormat.DDS_ATI2_3Dc:
case ImageEngineFormat.DDS_G8_L8:
case ImageEngineFormat.DDS_V8U8:
MipMaps = DDSGeneral.LoadDDS(stream, header, new Format(surfaceFormat), 0);
break;
default:
throw new InvalidDataException("Image format is unknown.");
}
bw.Dispose(); // Also disposes MemoryStream
return(MipMaps);
}