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make_oled_pic.py: script can transform an image into correct format for oled-13xx displays
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
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examples/python/make_oled_pic.py
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examples/python/make_oled_pic.py
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#!/usr/bin/env python
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# Author: Brendan Le Foll <brendan.le.foll@intel.com>
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# Copyright (c) 2014 Intel Corporation.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
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from __future__ import print_function
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from PIL import Image
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import sys
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# Pixels are arranged in one byte for 8 vertical pixels and not addressed individually
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# We convert the image to greysacle and end up making it monochrome where we
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# consider that every pixel that is '40' is black.
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width = 128
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height = 64
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if len(sys.argv) != 2:
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print('Please specify an image to use as the only argument')
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exit(1)
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im = Image.open(sys.argv[1])
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im = im.convert('L').resize((width, height))
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data = list(im.getdata())
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byteblock = [0 for i in range(width)]
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widthblock = [list(byteblock) for i in range(int(height/8))]
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numblock = 0
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pixcount = 0
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i = 0
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# we split the list by width * 8, to create data chunks of 8rows
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datachunks=[data[x:x+(width*8)] for x in range(0, len(data), (width*8))]
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# grab every pixel of image (or datachunk)
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while i < len(widthblock):
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pixcount = 0
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for y in datachunks[i]:
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xcoor = pixcount % width
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ycoor = int(pixcount/width)
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blknum = xcoor % len(widthblock)
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blkycoor = ycoor
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# 40 is what we consider 'black'
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if y > 40:
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widthblock[i][xcoor] |= (1 << blkycoor)
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pixcount += 1
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i += 1
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flatlist = [y for x in widthblock for y in x]
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carray = 'static uint8_t image[] = {\n' + ', '.join(str(x) for x in flatlist)
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print(carray + '\n};')
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