public (IEnumerable <IndexData> indeces, IList <Color> palette) Load(byte[] input, byte[] paletteData)
{
var palette = _paletteFormat.Load(paletteData).ToList();
var result = new List <IndexData>();
using (var br = new BinaryReaderX(new MemoryStream(input), false, _byteOrder))
while (br.BaseStream.Position < br.BaseStream.Length || !br.IsFirstNibble)
{
switch (_indexDepth)
{
case 4:
result.Add(new IndexData(br.ReadNibble()));
break;
case 8:
result.Add(new IndexData(br.ReadByte()));
break;
default:
throw new InvalidOperationException($"IndexDepth {_indexDepth} not supported.");
}
}
return(result, palette);
}
public Palette(byte[] paletteData, IImageFormat paletteFormat, int indexDepth = 8, ByteOrder byteOrder = ByteOrder.LittleEndian)
{
if (indexDepth % 4 != 0)
{
throw new Exception("IndexDepth has to be dividable by 4.");
}
this.byteOrder = byteOrder;
BitDepth = indexDepth;
FormatName = "Paletted " + paletteFormat.FormatName;
this.paletteFormat = paletteFormat;
paletteBytes = paletteData;
colors = paletteFormat.Load(paletteData).ToList();
}
public AI(int alpha, int indexSize, byte[] paletteData, IImageFormat paletteFormat, ByteOrder byteOrder = ByteOrder.LittleEndian)
{
if ((alpha + indexSize) % 8 != 0)
{
throw new Exception("Alpha + IndexSize has to be dividable by 8.");
}
this.byteOrder = byteOrder;
this.alpha = alpha;
this.indexSize = indexSize;
BitDepth = alpha + indexSize;
FormatName = $"A{alpha}I{indexSize}";
this.paletteFormat = paletteFormat;
paletteBytes = paletteData;
colors = paletteFormat.Load(paletteData).ToList();
}