public VgaStrataBlock(DaxFileBlock block)
{
setBlockId(block.Id);
var data = block.Data;
int height = ArrayToUshort(data, 0);
int width = ArrayToUshort(data, 2);
int xPos = ArrayToUshort(data, 4);
int yPos = ArrayToUshort(data, 6);
int picCount = data[8];
var widthPx = width * 8;
var heightPx = height;
var pxlClrs = new int[heightPx, widthPx];
var xPosPx = xPos * 8;
var yPosPx = yPos * 8;
var tempPalette = new byte[59];
var dataOffset = GetDataOffset(tempPalette, 9, data);
var dd = new int[48];
const int paletteBase = 0x20;
for (var i = 0; i < 24; i++)
{
var b = tempPalette[paletteBase + i];
dd[0 + i] = (b & 0x0f) * 4;
dd[24 + i] = (b & 0xf0) / 4;
}
var egaPalette = EgaVgaPalette.PaletteBase();
for (var i = 0; i < 14; i += 1)
{
var r = dd[(i * 3) + 6 + 0];
var g = dd[(i * 3) + 6 + 1];
var b = dd[(i * 3) + 6 + 2];
egaPalette[i + 18] = Color.FromArgb(r * 4, g * 4, b * 4);
}
for (int pic = 0; pic < picCount; pic++)
{
var inOffset = dataOffset;
for (var y = 0; y < height; y++)
{
for (var x = 0; x < widthPx; x++)
{
var mask = 0x80 >> (x & 7);
var inputByte = x / 8;
byte pxClr = 0;
if ((data[inOffset + inputByte] & mask) != 0)
{
pxClr = 1;
}
if ((data[inOffset + inputByte + width] & mask) != 0)
{
pxClr += 2;
}
if ((data[inOffset + inputByte + (width * 2)] & mask) != 0)
{
pxClr += 4;
}
if ((data[inOffset + inputByte + (width * 3)] & mask) != 0)
{
pxClr += 8;
}
if ((data[inOffset + inputByte + (width * 4)] & mask) != 0)
{
pxClr += 0x10;
}
pxlClrs[y, x] = pxClr;
}
inOffset += width * 5;
}
dataOffset = inOffset;
var bitmap = new Bitmap(widthPx + xPosPx, heightPx + yPosPx, System.Drawing.Imaging.PixelFormat.Format16bppArgb1555);
for (var y = 0; y < heightPx; y++)
{
for (var x = 0; x < widthPx; x += 1)
{
var pxX = x + xPosPx;
var pxY = y + yPosPx;
bitmap.SetPixel(pxX, pxY, egaPalette[pxlClrs[y, x]]);
}
}
Bitmaps.Add(bitmap);
}
}
