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some improvements for the reader

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* height is now -> raster_no
* width -> mwidth
* flip image before saving
This commit is contained in:
Philipp Klaus
2015-12-12 13:35:35 +01:00
parent d37abd6da0
commit 8f699384e5
1 changed files with 12 additions and 5 deletions
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reader.py
+12 -5
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@@ -1,7 +1,9 @@
#!/usr/bin/env python
import struct
import io
import logging
from PIL import Image
import numpy as np
from matplotlib import pyplot as plt
@@ -39,7 +41,8 @@ class BrotherReader(object):
if type(brother_file) in (str,):
brother_file = io.open(brother_file, 'rb')
self.brother_file = brother_file
self.width, self.height = None, None
self.mwidth, self.mheight = None, None
self.raster_no = None
self.rows = []
self.compression = False
self.page = 1
@@ -55,7 +58,8 @@ class BrotherReader(object):
num_bytes = len(command)
if cmd[1] > 0: num_bytes += cmd[1]
if cmd[0] == 'init':
self.width, self.height = None, None
self.mwidth, self.mheight = None, None
self.raster_no = None
self.rows = []
if cmd[0] == 'raster':
num_bytes += rem_script[2] + 2
@@ -86,12 +90,15 @@ class BrotherReader(object):
raise NotImplementedError()
self.rows.append(row)
if cmd[0] == 'media/quality':
self.height = rem_script[len(command) + 4] + rem_script[len(command) + 5]*256
self.width = rem_script[len(command) + 2] + rem_script[len(command) + 3]*256
logger.info(" width: {}mm height: {}dots".format(self.width, self.height))
self.raster_no = struct.unpack('<L', payload[4:8])[0]
self.mwidth = rem_script[len(command) + 2]
self.mlength = rem_script[len(command) + 3]*256
fmt = " media width: {}mm, media length: {}mm, raster no: {}dots"
logger.info(fmt.format(self.mwidth, self.mlength, self.raster_no))
if cmd[0] == 'print':
self.rows = [np.unpackbits(np.array(row, dtype=np.uint8)) for row in self.rows]
array = np.array(self.rows, dtype=np.uint8)
array = np.fliplr(array)
im = Image.fromarray(array)
im = im.point(lambda x: 0 if x == 1 else 255, '1') # -> Monocolor and invert
#plt.imshow(im)