private Char digestBitmap(int offset, int width)
{
Char ch = new Mfe.Char();
ch.Height = (byte)dfPixHeight;
ch.LogicalWidth = ch.Width = (byte)width;
ptr = offset;
int columns = ((width - 1) >> 3) + 1;
for (int c = 0; c < columns; c++) /* Not a secret message */
{
for (int y = 0; y < dfPixHeight; y++)
{
int line = readByte();
for (int x = 0; x < 8; x++, line = line << 1)
{
ch[y, c * 8 + x] = (line & 0x80) != 0;
}
}
}
return(ch);
}
private static byte getNextByte(Mfe.Char ch, bool Inverted, ref int row, ref int col, out int remainingBits)
{
int b = 0;
int shift = 0;
remainingBits = ch.Width * ch.Height - col * ch.Height - row;
int i;
if (remainingBits > 8)
{
i = 8;
}
else
{
i = remainingBits;
}
while (i-- > 0)
{
if (ch[row, col] ^ Inverted)
{
b |= 1 << shift++;
}
else
{
shift++;
}
remainingBits--;
row++;
if (row >= ch.Height)
{
col++;
row = 0;
}
}
return((byte)b);
}
