/// <summary>
/// Checks if the mipmap format is an raw compressed format
/// </summary>
public static bool IsCompressed(this MipmapFormat format)
{
switch (format)
{
case MipmapFormat.CompressedDXT5:
case MipmapFormat.CompressedDXT3:
case MipmapFormat.CompressedDXT1:
return(true);
default:
return(false);
}
}
private static Image ImageFromRawFormat(MipmapFormat format, byte[] bytes, int width, int height)
{
switch (format)
{
case MipmapFormat.R8:
return(bytes == null
? new Image <Gray8>(width, height)
: Image.LoadPixelData <Gray8>(bytes, width, height));
case MipmapFormat.RG88:
return(bytes == null
? new Image <RG88>(width, height)
: Image.LoadPixelData <RG88>(bytes, width, height));
case MipmapFormat.RGBA8888:
return(bytes == null
? new Image <Rgba32>(width, height)
: Image.LoadPixelData <Rgba32>(bytes, width, height));
default:
throw new InvalidOperationException($"Mipmap format: {format} is not supported");
}
}
public void CompressMipmap(
ITexMipmap mipmap,
MipmapFormat targetCompressFormat,
bool lz4Compress)
{
if (mipmap == null)
{
throw new ArgumentNullException(nameof(mipmap));
}
if (mipmap.IsLZ4Compressed)
{
throw new InvalidOperationException("Mipmap is already compressed using LZ4");
}
if (targetCompressFormat != mipmap.Format)
{
throw new NotSupportedException("Changing mipmap format is not yet supported");
}
if (lz4Compress)
{
LZ4Compress(mipmap);
}
}
/// <summary>
/// Checks if the mipmap format is an image format
/// </summary>
public static bool IsImage(this MipmapFormat format)
{
return((int)format >= 1000);
}
/// <summary>
/// Returns file extension for an image format
/// </summary>
/// <exception cref="ArgumentOutOfRangeException">When mipmap format isn't an image format'</exception>
public static string GetFileExtension(this MipmapFormat format)
{
switch (format)
{
case MipmapFormat.ImageBMP:
return("bmp");
case MipmapFormat.ImageICO:
return("ico");
case MipmapFormat.ImageJPEG:
return("jpg");
case MipmapFormat.ImageJNG:
return("jng");
case MipmapFormat.ImageKOALA:
return("koa");
case MipmapFormat.ImageLBM:
return("lbm");
case MipmapFormat.ImageIFF:
return("iff");
case MipmapFormat.ImageMNG:
return("mng");
case MipmapFormat.ImagePBM:
case MipmapFormat.ImagePBMRAW:
return("pbm");
case MipmapFormat.ImagePCD:
return("pcd");
case MipmapFormat.ImagePCX:
return("pcx");
case MipmapFormat.ImagePGM:
case MipmapFormat.ImagePGMRAW:
return("pgm");
case MipmapFormat.ImagePNG:
return("png");
case MipmapFormat.ImagePPM:
case MipmapFormat.ImagePPMRAW:
return("ppm");
case MipmapFormat.ImageRAS:
return("ras");
case MipmapFormat.ImageTARGA:
return("tga");
case MipmapFormat.ImageTIFF:
return("tif");
case MipmapFormat.ImageWBMP:
return("wbmp");
case MipmapFormat.ImagePSD:
return("psd");
case MipmapFormat.ImageCUT:
return("cut");
case MipmapFormat.ImageXBM:
return("xbm");
case MipmapFormat.ImageXPM:
return("xpm");
case MipmapFormat.ImageDDS:
return("dds");
case MipmapFormat.ImageGIF:
return("gif");
case MipmapFormat.ImageHDR:
return("hdr");
case MipmapFormat.ImageFAXG3:
return("g3");
case MipmapFormat.ImageSGI:
return("sgi");
case MipmapFormat.ImageEXR:
return("exr");
case MipmapFormat.ImageJ2K:
return("j2k");
case MipmapFormat.ImageJP2:
return("jp2");
case MipmapFormat.ImagePFM:
return("pfm");
case MipmapFormat.ImagePICT:
return("pict");
case MipmapFormat.ImageRAW:
return("raw");
default:
throw new ArgumentOutOfRangeException(nameof(format), format, null);
}
}
/// <summary>
/// Checks if the mipmap format is an raw uncompressed format
/// </summary>
public static bool IsRawFormat(this MipmapFormat format)
{
var formatId = (int)format;
return(formatId >= 1 && formatId <= 3);
}