webcamfixer

Так мне было скучно вчера, сидеть и учить эти унылые билеты ПДД, что я придумал себе развлекуху — написать скрипт для исправления косяков заливки фоток с вебкамеры.

Развлекся отлично, сто строк кода, задача решена, скуки как не бывало.

Вот работающий пример кода на Python, где в дереве каталогов (папок) ищутся файлы определенного типа (JPG), список найденного сортируется по времени модификации файлА, найденное файлО копируется куда заказано и, в качестве бонуса, на картинку ставится временной штамп, чтобы видно было, когда сделана фоточка.

	#!/usr/bin/env python
	# -*- mode: python; coding: utf-8 -*-
	# Copyright (c) Valentin Fedulov <vasnake@gmail.com>
	''' This script intended to fix some webcam software problems.
	It's job can be described in three points:
	First step: find latest JPG file in SEARCH_IN folder and subfolders.
	Next step: copy that file to WRITE_TO destination.
	Last step: put a timestamp on lower right corner of the WRITE_TO image.
	Tested on Linux CentOS 6.
	You may need to install PIL:
	yum install python-imaging
	also you'll need FreeSans.ttf (http://ftp.gnu.org/gnu/freefont/), refer to FONT constant.
	Usage
	Edit FONT, SEARCH_IN and WRITE_TO constants and call script like:
	sudo -u ftpsecure python -u /opt/webcamfixer.py
	or set a crontab job:
	nano /etc/crontab
	SHELL=/bin/bash
	PATH=/sbin:/bin:/usr/sbin:/usr/bin
	MAILTO=root
	HOME=/
	*/3 * * * * ftpsecure python -u /opt/webcamfixer.py
	Ftpsecure came from my vsftpd setup, just forget about it.
	'''
	from __future__ import print_function
	import time
	import os
	import shutil
	from PIL import Image, ImageDraw, ImageFont
	FONT = "/opt/FreeSans.ttf"
	SEARCH_IN = u'/home/ftpsecure'
	WRITE_TO = u'/home/ftpsecure/cam_1.jpg'
	print(u"Clubwindsurf webcam picture fixer. {timestamp}".format(timestamp=time.strftime('%Y-%m-%d %H:%M:%S')))
	def main():
	fname = findLatestJpg(SEARCH_IN)
	if fname == WRITE_TO:
	print(u"File is fresh as it is, quit.")
	else:
	statinfo = os.stat(fname)
	if statinfo.st_size > 0:
	if copyFile(fname, WRITE_TO):
	timeInfo = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(statinfo.st_mtime))
	addTimeStamp(WRITE_TO, timeInfo)
	def findLatestJpg(dirName):
	fileName = u''
	listFiles = findFiles(dirName, u'jpg')
	def getMtime(fn):
	res = 0
	try:
	statinfo = os.stat(fn)
	if statinfo.st_size > 0:
	res = statinfo.st_mtime
	except:
	print(u"Problem with {fn}".format(fn=fn))
	return res
	sortedLF = sorted(listFiles, key=getMtime, reverse=True)
	if sortedLF:
	fileName = sortedLF[0]
	return fileName
	def copyFile(fromName, toName):
	if fromName and toName:
	if not fromName.lower() == toName.lower():
	print(u"Copy from {fromName} to {toName}".format(fromName=fromName, toName=toName))
	shutil.copy(fromName, toName)
	return True
	return False
	def findFiles(scandir, ext):
	'''Returns list of file names with extension 'ext'
	recursively finded inside 'scandir'
	scandir, ext is a unicode strings
	'''
	ftype = u'.' + ext.lower()
	lstFiles = []
	for root, dirs, files in os.walk(scandir):
	for f in files:
	fn = os.path.join(root, f)
	if fn.lower().endswith(ftype):
	lstFiles.append(unicode(fn))
	return lstFiles
	def addTimeStamp(fileName, timeInfo):
	'''80% of this function code came from
	http://jepoirrier.org/2008/11/24/short-script-to-add-a-timestamp-on-pictures/
	https://github.com/jepoirrier/miscScripts/blob/master/timestampFiles.py
	'''
	fontSize = 15
	textPadding = 2
	boxWidth = 150
	boxHeight = 25
	im = Image.open(fileName)
	topLeftWidth = int(im.size[0] - boxWidth)
	topLeftHeight = int(im.size[1] - boxHeight)
	imfont = ImageFont.truetype(FONT, fontSize)
	draw = ImageDraw.Draw(im)
	draw.rectangle([topLeftWidth, topLeftHeight, im.size[0], im.size[1]],
	fill="black")
	draw.text([topLeftWidth + textPadding, topLeftHeight + textPadding],
	timeInfo, fill="lime", font=imfont)
	del draw
	im.save(fileName, 'JPEG', quality=90, optimize=True)
	if __name__ == "__main__":
	main()

view raw webcamfixer.py hosted with ❤ by GitHub

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вон там внизу справа - таймштамп.

original post http://vasnake.blogspot.com/2014/07/webcamfixer.html