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brother_ql_write script added

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This commit is contained in:
Philipp Klaus
2015-12-13 17:57:34 +01:00
parent 9381bd38fd
commit bbb3919ed0
5 changed files with 146 additions and 13 deletions
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65
brother_ql/create.py Executable file
View File

@@ -0,0 +1,65 @@
#!/usr/bin/env python
import sys, argparse, logging
import numpy as np
from PIL import Image
from brother_ql.writer import QLRaster
def hex_format(data):
return ' '.join('{:02X}'.format(byte) for byte in data)
def multiline_hex(data, bpl):
""" data: bytes, bpl: int (bytes to be displayed per line) """
data = hex_format(data).split()
data = [' '.join(data[i:i+bpl]) for i in range(0, len(data), bpl)]
return '\n'.join(data) + '\n'
def main():
parser = argparse.ArgumentParser()
parser.add_argument('image')
parser.add_argument('outfile', nargs='?', type=argparse.FileType('wb'), default=sys.stdout.buffer)
parser.add_argument('--model', default='QL-500')
parser.add_argument('--threshold', type=int, default=170)
parser.add_argument('--loglevel', type=lambda x: getattr(logging, x), default=logging.WARNING)
args = parser.parse_args()
logging.basicConfig(level=args.loglevel)
im = Image.open(args.image)
im = im.convert("L")
arr = np.asarray(im, dtype=np.uint8)
arr.flags.writeable = True
white_idx = arr[:,:] < args.threshold
black_idx = arr[:,:] >= args.threshold
arr[white_idx] = 1
arr[black_idx] = 0
qlr = QLRaster(args.model)
qlr.set_mode()
qlr.set_clear_command_buffer()
qlr.set_initialize()
qlr.set_mode()
qlr.mtype = 0x0A
qlr.mwidth = 62
qlr.mlength = 0
qlr.set_media_and_quality(im.size[1])
qlr.set_autocut(True)
qlr.set_cut_every(1)
qlr.dpi_600 = False
qlr.cut_at_end = True
qlr.set_expanded_mode()
qlr.set_margins()
qlr.set_compression(True)
qlr.set_raster_data(arr)
qlr.print()
if args.loglevel == logging.DEBUG:
sys.stderr.write(multiline_hex(qlr.data, 16))
args.outfile.write(qlr.data)
if __name__ == "__main__":
main()

31
brother_ql/devicedependent.py
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@@ -75,3 +75,34 @@ right_margin_addition = {
'QL-1050': 44,
'QL-1060N': 44,
}
modesetting = [
'QL-580N',
'QL-650TD',
'QL-1050',
'QL-1060N',
'QL-710W',
'QL-720NW',
]
cuttingsupport = [
'QL-560',
'QL-570',
'QL-580N',
'QL-650TD',
'QL-700',
'QL-1050',
'QL-1060N',
'QL-710W',
'QL-720NW',
]
compressionsupport = [
'QL-570',
'QL-580N',
'QL-650TD',
'QL-1050',
'QL-1060N',
'QL-710W',
'QL-720NW',
]

9
brother_ql/reader.py
View File

@@ -3,6 +3,7 @@
import struct
import io
import logging
import sys
from PIL import Image
import numpy as np
@@ -103,7 +104,9 @@ class BrotherReader(object):
im = im.point(lambda x: 0 if x == 1 else 255, '1') # -> Monocolor and invert
#plt.imshow(im)
#plt.show()
im.save('image{:04d}.png'.format(self.page))
img_name = 'page{:04d}.png'.format(self.page)
im.save(img_name)
print('Page saved as {}'.format(img_name))
self.page += 1
rem_script = rem_script[num_bytes:]
@@ -111,7 +114,7 @@ class BrotherReader(object):
if cmd_found:
continue
else:
logger.error('cmd not found: {}...'.format(rem_script[0:4]))
logger.error('cmd not found: {0}... ({1}...)'.format(hex_format(rem_script[0:4]), rem_script[0:4]))
rem_script = rem_script[1:]
def main():
@@ -122,7 +125,7 @@ def main():
parser.add_argument('--loglevel', type=lambda x: getattr(logging, x), default=logging.WARNING, help='The loglevel to apply')
args = parser.parse_args()
logging.basicConfig(format='%(levelname)s: %(message)s', level=args.loglevel)
logging.basicConfig(stream=sys.stdout, format='%(levelname)s: %(message)s', level=args.loglevel)
br = BrotherReader(args.file)
br.analyze()

49
brother_ql/writer.py
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@@ -1,5 +1,6 @@
import struct
import logging
import packbits
import numpy as np
@@ -9,7 +10,12 @@ from .devicedependent import models, \
min_max_length_dots, \
paper_dimensions, \
number_bytes_per_row, \
right_margin_addition
right_margin_addition, \
compressionsupport, \
cuttingsupport, \
modesetting
logger = logging.getLogger(__name__)
class QLRaster(object):
@@ -22,14 +28,28 @@ class QLRaster(object):
self.page_number = 0
self.cut_at_end = True
self.dpi_600 = False
self.compression = True
self._compression = False
self.exception_on_warning = False
def initialize(self):
def warn(self, problem):
if self.exception_on_warning:
raise QLRasterError(problem)
else:
logger.warning(problem)
def set_initialize(self):
self.page_number = 0
self.data += b'\x1B\x69\x61\x01' # mode setting (raster mode)
self.data += b'\x00' * 200
self.data += b'\x1B\x40' # init
self.data += b'\x1B\x69\x61\x01' # mode setting (raster mode)
def set_mode(self):
""" switch to raster mode """
if self.model not in modesetting:
self.warn("Trying to switch the operating mode on a printer that doesn't support the command.")
return
self.data += b'\x1B\x69\x61\x01'
def set_clear_command_buffer(self):
self.data += b'\x00' * 200
@property
def mtype(self): return self._mtype
@@ -83,6 +103,9 @@ class QLRaster(object):
self.data += bytes([n & 0xFF])
def set_expanded_mode(self):
if self.model not in cuttingsupport:
self.warn("Trying to set expanded mode on a printer that doesn't support it")
return
self.data += b'\x1B\x69\x4B'
flags = 0x00
flags |= self.cut_at_end << 3
@@ -94,17 +117,27 @@ class QLRaster(object):
self.data += struct.pack('<H', dots)
def set_compression(self, compression=True):
self.compression = compression
if self.model not in compressionsupport:
self.warn("Trying to set compression on a printer that doesn't support it")
return
self._compression = compression
self.data += b'\x4D'
self.data += bytes([compression << 1])
def set_raster_data(self, np_array):
""" np_array: numpy array of 1-bit values """
np_array = np.fliplr(np_array)
try:
nbpr = number_bytes_per_row[self.model]
except:
nbpr = number_bytes_per_row['default']
for row in np_array:
self.data += b'\x67\x00'
row = bytes(np.packbits(row))
if self.compression:
if len(row) != nbpr:
fmt = 'Wrong number of bytes per row: {}, expected {}'
raise QLRasterError(fmt.format(len(row), nbpr))
if self._compression:
row = packbits.encode(row)
self.data += bytes([len(row)])
self.data += row

5
setup.py
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@@ -16,7 +16,8 @@ setup(name='brother_ql',
packages = ['brother_ql'],
entry_points = {
'console_scripts': [
'brother_ql_reader = brother_ql.reader:main',
'brother_ql_read = brother_ql.reader:main',
'brother_ql_write = brother_ql.create:main',
],
},
include_package_data = False,
@@ -24,7 +25,7 @@ setup(name='brother_ql',
platforms = 'any',
install_requires = ['numpy', 'packbits', 'pillow'],
extras_require = {
'brother_ql_reader': ["matplotlib",],
'brother_ql_read': ["matplotlib",],
},
keywords = 'Brother QL-500 QL-570 QL-710W QL-720NW',
classifiers = [