public Palette(PAAType format)
{
MaxColor = new PackedColor(0xffffffff);
switch (format)
{
case PAAType.RGBA_4444:
case PAAType.RGBA_8888:
case PAAType.AI88:
AverageColor = new PackedColor(0x80c02020);
break;
default:
AverageColor = new PackedColor(0xff802020);
break;
}
}
public void Read(BinaryReaderEx input, int[] startOffsets)
{
//read Taggs
while (input.ReadAscii(4) == "GGAT")
{
var taggName = input.ReadAscii(4);
int taggSize = input.ReadInt32();
switch (taggName)
{
case "CXAM": //MAXC
Debug.Assert(taggSize == 4);
MaxColor = new PackedColor(input.ReadUInt32());
break;
case "CGVA": //AVGC
Debug.Assert(taggSize == 4);
AverageColor = new PackedColor(input.ReadUInt32());
break;
case "GALF": //FLAG
Debug.Assert(taggSize == 4);
int flags = input.ReadInt32();
if ((flags & PicFlagAlpha) != 0)
{
IsAlpha = true;
}
if ((flags & PicFlagTransparent) != 0)
{
IsTransparent = true;
}
break;
case "SFFO": //OFFS
int nOffs = taggSize / sizeof(int);
for (int i = 0; i < nOffs; i++)
{
startOffsets[i] = input.ReadInt32();
}
break;
case "ZIWS": //SWIZ
input.Position += taggSize;
break;
default:
//just skip the data
Debug.Fail("What is that unknown PAA tagg?");
input.Position += taggSize;
break;
}
}
input.Position -= 4;
//read palette colors
var nPaletteColors = input.ReadUInt16();
Colors = new PackedColor[nPaletteColors];
for (int index = 0; index < nPaletteColors; ++index)
{
var b = input.ReadByte();
var g = input.ReadByte();
var r = input.ReadByte();
Colors[index] = new PackedColor(r, g, b);
}
}