epickiwi/brother_ql
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'brother_ql analyze' updated to support P-Touch series files

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Philipp Klaus committed 2019-09-02 20:34:12 +02:00
1 parent b551b1fc94
commit 05516a7692
1 file changed
+27 -9
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brother_ql/reader.py
+27 -9
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@@ -16,8 +16,10 @@ OPCODES = {
# signature name following bytes description
b'\x00': ("preamble", -1, "Preamble, 200-300x 0x00 to clear comamnd buffer"),
b'\x4D': ("compression", 1, ""),
b'\x67': ("raster", -1, ""),
b'\x77': ("2-color raster", -1, ""),
b'\x67': ("raster QL", -1, ""),
b'\x47': ("raster P-touch", -1, ""),
b'\x77': ("2-color raster QL", -1, ""),
b'\x5a': ("zero raster", 0, "empty raster line"),
b'\x0C': ("print", 0, "print intermediate page"),
b'\x1A': ("print", 0, "print final page"),
b'\x1b\x40': ("init", 0, "initialization"),
@@ -139,12 +141,15 @@ def chunker(data, raise_exception=False):
opcode_def = OPCODES[opcode]
num_bytes = len(opcode)
if opcode_def[1] > 0: num_bytes += opcode_def[1]
if 'raster' in opcode_def[0]:
elif opcode_def[0] in ('raster QL', '2-color raster QL'):
num_bytes += data[2] + 2
elif opcode_def[0] in ('raster P-touch',):
num_bytes += data[1] + data[2]*256 + 2
#payload = data[len(opcode):num_bytes]
instructions.append(data[:num_bytes])
yield instructions[-1]
data = data[num_bytes:]
return instructions
#return instructions
def match_opcode(data):
matching_opcodes = [opcode for opcode in OPCODES.keys() if data.startswith(opcode)]
@@ -262,7 +267,11 @@ class BrotherQLReader(object):
logger.info(" {} ({}) --> found! (payload: {})".format(opcode_def[0], hex_format(opcode), hex_format(payload)))
if opcode_def[0] == 'compression':
self.compression = payload[0] == 0x02
if 'raster' in opcode_def[0]:
if opcode_def[0] == 'zero raster':
self.black_rows.append(bytes())
if self.two_color_printing:
self.red_rows.append(bytes())
if opcode_def[0] in ('raster QL', '2-color raster QL', 'raster P-touch'):
rpl = bytes(payload[2:]) # raster payload
if self.compression:
row = bytes()
@@ -282,7 +291,7 @@ class BrotherQLReader(object):
if index >= len(rpl): break
else:
row = rpl
if opcode_def[0] == 'raster':
if opcode_def[0] in ('raster QL', 'raster P-touch'):
self.black_rows.append(row)
else: # 2-color
if payload[0] == 0x01:
@@ -306,15 +315,24 @@ class BrotherQLReader(object):
logger.info("Len of red rows: %d", len(self.red_rows))
def get_im(rows):
if not len(rows): return None
size = (len(rows[0])*8, len(rows))
data = bytes(b''.join(rows))
width_dots = max(len(row) for row in rows)
height_dots = len(rows)
size = (width_dots*8, height_dots)
expanded_rows = []
for row in rows:
if len(row) == 0:
expanded_rows.append(b'\x00'*width_dots)
else:
expanded_rows.append(row)
data = bytes(b''.join(expanded_rows))
data = bytes([2**8 + ~byte for byte in data]) # invert b/w
im = Image.frombytes("1", size, data, decoder_name='raw')
return im
im_black, im_red = (get_im(rows) for rows in (self.black_rows, self.red_rows))
if not self.two_color_printing:
im_black = get_im(self.black_rows)
im = im_black
else:
im_black, im_red = (get_im(rows) for rows in (self.black_rows, self.red_rows))
im_black = im_black.convert("RGBA")
im_red = im_red.convert("L")
im_red = colorize(im_red, (255, 0, 0), (255, 255, 255))