internal static IconImage Parse(BinaryReader reader)
{
var infoHeader = BmpInfoHeader.Parse(reader);
if (infoHeader.Compression != 0)
{
throw new NotSupportedException();
}
if (infoHeader.BitCount != 4)
{
throw new NotSupportedException();
}
var numColorTableEntries = (int)Math.Pow(2, infoHeader.BitCount);
var colorTable = BmpColorTable.Parse(reader, numColorTableEntries);
var xorMask = BmpRasterData.Parse(reader, infoHeader.Width, infoHeader.Height / 2, infoHeader.BitCount);
var andMask = BmpRasterData.Parse(reader, infoHeader.Width, infoHeader.Height / 2, 1);
return(new IconImage
{
Header = infoHeader,
ColorTable = colorTable,
XorMask = xorMask,
AndMask = andMask
});
}
internal static IconImage Parse(BinaryReader reader)
{
var infoHeader = BmpInfoHeader.Parse(reader);
if (infoHeader.Compression != 0)
{
throw new NotSupportedException();
}
int numColorTableEntries;
switch (infoHeader.BitCount)
{
case 4:
case 8:
numColorTableEntries = (int)MathF.Pow(2, infoHeader.BitCount);
break;
case 24:
case 32:
numColorTableEntries = (int)infoHeader.ColorsUsed;
break;
default:
throw new NotSupportedException();
}
var colorTable = BmpColorTable.Parse(reader, numColorTableEntries);
var xorMask = BmpRasterData.Parse(reader, infoHeader.Width, infoHeader.Height / 2, infoHeader.BitCount);
var andMask = BmpRasterData.Parse(reader, infoHeader.Width, infoHeader.Height / 2, 1);
return(new IconImage
{
Header = infoHeader,
ColorTable = colorTable,
XorMask = xorMask,
AndMask = andMask
});
}