98 lines
2.5 KiB
Python
98 lines
2.5 KiB
Python
#! /usr/bin/python3
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# adapted from https://github.com/vivier/phomemo-tools, thank you!
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import getopt, sys, os
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from PIL import Image
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def print_header():
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with os.fdopen(sys.stdout.fileno(), "wb", closefd=False) as stdout:
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stdout.write(b'\x1b\x40\x1b\x61\x01\x1f\x11\x02\x04')
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return
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def print_marker(lines=0x100):
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with os.fdopen(sys.stdout.fileno(), "wb", closefd=False) as stdout:
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stdout.write(0x761d.to_bytes(2, 'little'))
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stdout.write(0x0030.to_bytes(2, 'little'))
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stdout.write(0x0030.to_bytes(2, 'little'))
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stdout.write((lines - 1).to_bytes(2, 'little'))
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return
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def print_footer():
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with os.fdopen(sys.stdout.fileno(), "wb", closefd=False) as stdout:
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stdout.write(b'\x1b\x64\x02')
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stdout.write(b'\x1b\x64\x02')
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stdout.write(b'\x1f\x11\x08')
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stdout.write(b'\x1f\x11\x0e')
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stdout.write(b'\x1f\x11\x07')
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stdout.write(b'\x1f\x11\x09')
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return
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def print_line(image, line):
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with os.fdopen(sys.stdout.fileno(), "wb", closefd=False) as stdout:
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for x in range(int(image.width / 8)):
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byte = 0
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for bit in range(8):
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if image.getpixel((x * 8 + bit, line)) == 0:
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byte |= 1 << (7 - bit)
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# 0x0a breaks the rendering
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# 0x0a alone is processed like LineFeed by the printe
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if byte == 0x0a:
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byte = 0x14
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stdout.write(byte.to_bytes(1, 'little'))
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return
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def usage():
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print("%s [-h|--help] filename" % (sys.argv[0]))
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return
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try:
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opts, args = getopt.getopt(sys.argv[1:], "h", ["help"])
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except getopt.error as err:
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print (str(err))
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usage()
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sys.exit(1)
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for opt, arg in opts:
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if opt in ("-h", "--help"):
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usage()
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sys.exit()
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try:
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name = sys.argv[1]
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except:
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print("Missing filename")
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usage()
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sys.exit(1)
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try:
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image = Image.open(name)
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except:
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print("Cannot open file %s" % (name))
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usage()
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sys.exit(2)
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if image.width > image.height:
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image = image.transpose(Image.ROTATE_90)
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# width 384 dots
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image = image.resize(size=(384, int(image.height * 384 / image.width)))
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# black&white printer: dithering
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image = image.convert(mode='1')
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remaining = image.height
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line=0
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print_header()
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while remaining > 0:
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lines = remaining
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if lines > 256:
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lines = 256
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print_marker(lines)
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remaining -= lines
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while lines > 0:
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print_line(image, line)
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lines -= 1
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line += 1
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print_footer()
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