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@marcan /memopri.py
Last active Jul 13, 2018

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Casio MemoPri (メモプリ) printer client
#!/usr/bin/python3
import sys, socket, struct
import PIL, PIL.Image, PIL.ImageOps
DENSITY_MIN = 0
DENSITY_LIGHT = 1
DENSITY_NORMAL = 2
DENSITY_HEAVY = 3
DENSITY_MAX = 4
WHITESPACE_NONE = 0
WHITESPACE_BEFORE = 1
WHITESPACE_AFTER = 2
class MemoPri(object):
def __init__(self, host, port=16402):
self.s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.s.connect((host, port))
@classmethod
def find(cls):
stx = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
srx = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
srx.bind(("0.0.0.0", 49168))
stx.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
srx.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
stx.connect(("255.255.255.255", 49167))
stx.send(b"M"+b"E"+b"P"+b" "+b"r"+b"2", 0)
data, (ip, port) = srx.recvfrom(128)
name = data.split(b"\0")[0].decode("utf-8")
print("Found printer %s at %s" % (name, ip))
return cls(ip)
def cmd(self, cmd, replylen=1):
self.s.sendall(bytes(cmd))
v = self.s.recv(replylen)
print ("< %r" % v)
return v
def print(self, img, whitespace=WHITESPACE_NONE, density=DENSITY_NORMAL):
self.cmd([0x1b, 0x5a])
self.cmd([0x05], 6)
self.cmd([0x06])
self.cmd([0x1b, 0x49])
self.cmd([0x05], 8)
self.cmd([0x06])
self.cmd([0x1b, 0x46])
self.cmd([0x05], 8)
self.cmd([0x06])
self.cmd([0x1b, 0x50])
rows, data = self.format_data(img)
length = rows * 16
self.cmd(
bytes([0x02, 0x80, 0x0c, 0x00, 0x00, 0x00, whitespace, density,
0x80, 0x00]) + struct.pack("<HHxx", rows, length)
)
self.cmd([0x1b, 0x56])
print("Sending data...")
for i in range(0, len(data), 0x200):
self.cmd(data[i:i+0x200])
print("Printing...")
self.cmd([0x1b, 0x42])
def format_data(self, img, dither=True):
img = img.transpose(PIL.Image.TRANSPOSE)
img = img.convert("L")
img = PIL.ImageOps.invert(img)
img = img.convert("1", dither=(PIL.Image.FLOYDSTEINBERG if dither else PIL.Image.NONE))
rows = img.height
assert img.width <= 96
canvas = PIL.Image.new("1", (128, rows))
canvas.paste(img, ((128 - img.width)//2, 0))
data = canvas.tobytes()
assert len(data) % 0x10 == 0
if len(data) & 0x1ff:
data += b'\x00' * (0x200 - (len(data) & 0x1ff))
assert len(data) % 0x200 == 0
return rows, data
if __name__ == "__main__":
m = MemoPri.find()
m.print(PIL.Image.open(sys.argv[1]))
print("Done!")
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