public void DrawNativeBuffer(byte[] buffer, EinkColor color)
{
if (buffer.Length != displayWidth * displayHeight >> 3)
{
throw new ArgumentOutOfRangeException();
}
sendCommand(new byte[] { color == EinkColor.Black ? (byte)0x10 : (byte)0x13 });
for (int i = 0; i < buffer.Length; i++)
{
sendData(new byte[] { (byte)~buffer[i] });
}
}
private void writeImage(byte[] buffer, EinkColor color)
{
int x, y, yBase, red, green, blue, firstByte, secondByte, bitMask;
byte dataByte;
for (int byteIndex = 0; byteIndex < displayWidth * displayHeight >> 3; byteIndex++)
{
dataByte = 0;
x = displayWidth - 1 - byteIndex / 13;
yBase = (byteIndex % 13) << 3;
bitMask = 1;
for (int bitIndex = 0; bitIndex < 8; bitIndex++)
{
y = yBase + 7 - bitIndex;
firstByte = buffer[x * 2 + y * displayWidth * 2];
secondByte = buffer[x * 2 + y * displayWidth * 2 + 1];
red = secondByte >> 3;
green = firstByte >> 5 + (secondByte & 0b00000111) << 3;
blue = firstByte & 0b00011111;
if (color == EinkColor.Red && red > 15 && green < 32 && blue < 16)
{
dataByte += (byte)bitMask;
}
if (color == EinkColor.Black && red < 16 && green < 32 && blue < 16)
{
dataByte += (byte)bitMask;
}
bitMask <<= 1;
}
sendData(new byte[] { (byte)~dataByte });
}
}