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'''
Common functions
'''
import string
import os
import sys
import subprocess
from collections import OrderedDict
def badName(name):
'''Returns whether a name contains non-alphanumeric chars'''
return any([letter in string.punctuation for letter in name])
def presetToString(dictionary):
'''Alphabetizes a dict into OrderedDict & returns string repr'''
return repr(
OrderedDict(sorted(dictionary.items(), key=lambda t: t[0]))
)
def presetFromString(string):
'''Turns a string repr of OrderedDict into a regular dict'''
return dict(eval(string))
def appendUppercase(lst):
for form, i in zip(lst, range(len(lst))):
lst.append(form.upper())
return lst
def hideCmdWin(func):
''' Stops CMD window from appearing on Windows.
Adapted from here: http://code.activestate.com/recipes/409002/
'''
def decorator(commandList, **kwargs):
if sys.platform == 'win32':
startupinfo = subprocess.STARTUPINFO()
startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
kwargs['startupinfo'] = startupinfo
return func(commandList, **kwargs)
return decorator
@hideCmdWin
def checkOutput(commandList, **kwargs):
return subprocess.check_output(commandList, **kwargs)
@hideCmdWin
def openPipe(commandList, **kwargs):
return subprocess.Popen(commandList, **kwargs)
def disableWhenEncoding(func):
''' Blocks calls to a function while the video is being exported
in MainWindow.
'''
def decorator(*args, **kwargs):
if args[0].encoding:
return
else:
return func(*args, **kwargs)
return decorator
def LoadDefaultSettings(self):
''' Runs once at each program start-up. Fills in default settings
for any settings not found in settings.ini
'''
self.resolutions = [
'1920x1080',
'1280x720',
'854x480'
]
default = {
"outputWidth": 1280,
"outputHeight": 720,
"outputFrameRate": 30,
"outputAudioCodec": "AAC",
"outputAudioBitrate": "192",
"outputVideoCodec": "H264",
"outputVideoBitrate": "2500",
"outputVideoFormat": "yuv420p",
"outputPreset": "medium",
"outputFormat": "mp4",
"outputContainer": "MP4",
"projectDir": os.path.join(self.dataDir, 'projects'),
}
for parm, value in default.items():
if self.settings.value(parm) is None:
self.settings.setValue(parm, value)
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