Printing using the run_length_encode gives an error #81
Description
When using the :
def cmd_print_row(img_row):
# Try to use run-length compression on the image data.
encoded_img = run_length_encode(img_row)
...
The encoded_img could not be converted to a proper bytearray yieling an out of bound value error.
Looking at the code a bit, It feels like the method :
def encode_run_length_repetition(n, val):
res = []
while n > 0x7f:
res.append(0x7f | (val << 7))
n -= 0x7f
if n > 0:
res.append((val << 7) | n)
return res
adds 16bits bytes instead of adding 8bits bytes to the array.
Not sure what should be done.
I've tested with my printer to split the 16bits into 2 8bits but I doesn't work...