internal PaletteArchive(AssetLoader loader)
: base(loader)
{
for (int index = 0; index < 8; index++)
{
PaletteAsset asset = PaletteAsset.ReadRgb(Manager, "Palette " + index, loader.Reader, 256, 63);
AddChild(asset);
}
}
/// <summary>Load the PCX image file.</summary>
/// <param name="loader"></param>
/// <returns></returns>
public override Asset Load(AssetLoader loader)
{
BinaryReader reader = loader.Reader;
PcxHeader header = new PcxHeader(reader);
int pitch = (header.BitsPerPixel * header.ColorPlaneCount + 7) / 8 * header.SizeX;
int[] data = new int[pitch * header.SizeY + 1];
for (int row = 0; row < header.SizeY; row++)
{
switch (header.Compression)
{
case PcxCompression.None:
for (int index = 0; index < pitch; index++)
{
data[pitch * row + index] = reader.ReadByte();
}
break;
case PcxCompression.RLE:
for (int offset = pitch * row, end = offset + header.BytesPerScanLine; offset < end;)
{
byte value = reader.ReadByte();
if (value < 0xC0)
{
data[offset++] = value;
}
else
{
int runEnd = offset + value - 0xC0;
byte code = reader.ReadByte();
while (offset < runEnd)
{
data[offset++] = code;
}
}
}
break;
default:
throw new NotImplementedException();
}
}
PaletteAsset palette = null;
if (header.ColorPlaneCount == 1)
{
if (reader.BaseStream.ReadByte() == PaletteMagic)
{
palette = PaletteAsset.ReadRgb(Manager, loader.Name + " Palette", reader, 1 << header.BitsPerPixel, 255);
}
}
if (palette != null)
{
return(new IndexedTextureAsset(loader, palette, header.SizeX, header.SizeY, data, pitch));
}
else
{
throw new NotImplementedException();
}
}