public void Read(BinaryReader reader, ref Palette_15Bit currentPalette)
{
FirstByte = reader.ReadByte();
if (FirstByte == 0)
{
// no data. All else is irrelevant. The whole resource is 1 byte of zero.
return;
}
ImageWidth = reader.ReadInt32();
ImageHeight = reader.ReadInt32();
ImageOffsetX = reader.ReadInt32();
ImageOffsetY = reader.ReadInt32();
ImageHandle = reader.ReadInt32();
PaletteHandle = reader.ReadInt32();
BitsPerPixel = reader.ReadByte();
FrameHeight = reader.ReadByte(); // height comes before width. Why?
FrameWidth = reader.ReadByte();
Alignment = reader.ReadByte();
// insanity
if (ImageWidth < 0)
{
throw new InvalidDataException("Unexpected negative number for image width! (Value = {0})".F(ImageWidth));
}
if (ImageHeight < 0)
{
throw new InvalidDataException("Unexpected negative number for image height! (Value = {0})".F(ImageHeight));
}
if (FrameWidth < 0)
{
throw new InvalidDataException("Unexpected negative number for frame width! (Value = {0})".F(FrameWidth));
}
if (FrameHeight < 0)
{
throw new InvalidDataException("Unexpected negative number for frame height! (Value = {0})".F(FrameHeight));
}
int pixels = ImageWidth * ImageHeight;
if (BitsPerPixel == 8)
{
ImageData = reader.ReadBytes(pixels);
}
else if (BitsPerPixel == 16)
{
ImageData = reader.ReadBytes(pixels * 2);
}
else
{
// pixelated insanity
throw new InvalidDataException("Unexpected bits per pixel! (Value = {0})".F(BitsPerPixel));
}
if (PaletteHandle == 0)
{
}
if (PaletteHandle != 0)
{
if (BitsPerPixel == 8)
{
switch (PaletteType)
{
case PaletteType.EMBEDDED_PALETTE:
Memory = reader.ReadInt32();
PaletteHandle2 = reader.ReadInt32();
currentPalette.Read(reader);
break;
case PaletteType.REFERENCED_PALETTE:
break;
}
}
Palette = currentPalette.Clone();
}
}
