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bibencode_profiles.py
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Sun, Jul 14, 07:32

bibencode_profiles.py
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# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2011 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
""" BibEncode profile submodule """
import os
import shutil
from invenio.jsonutils import json_decode_file
from invenio.bibencode_config import (
CFG_BIBENCODE_PROFILES_ENCODING,
CFG_BIBENCODE_PROFILES_EXTRACT,
CFG_BIBENCODE_PROFILES_ENCODING_LOCAL,
CFG_BIBENCODE_PROFILES_EXTRACT_LOCAL
)
from invenio.bibencode_utils import getval
from invenio.errorlib import register_exception
#-------------------#
# Encoding profiles #
#-------------------#
def get_encoding_profiles():
""" Returns a dictionary representation of the encoding profiles
"""
if not os.path.exists(CFG_BIBENCODE_PROFILES_ENCODING_LOCAL):
shutil.copy(CFG_BIBENCODE_PROFILES_ENCODING, CFG_BIBENCODE_PROFILES_ENCODING_LOCAL)
default_profiles = json_decode_file(CFG_BIBENCODE_PROFILES_ENCODING)
local_profiles = json_decode_file(CFG_BIBENCODE_PROFILES_ENCODING_LOCAL)
default_profiles.update(local_profiles)
return default_profiles
def get_encoding_profile(key):
""" Returns a dictionary representation of an encoding profile by key
"""
profile = get_encoding_profiles()[key]
def san_bitrate(bitrate):
""" Sanitizes bitrates
"""
if type(str()) == type(bitrate):
if bitrate.endswith('k'):
try:
bitrate = int(bitrate[:-1])
bitrate *= 1000
return int(bitrate)
except ValueError:
register_exception(alert_admin=True)
raise
elif type(int) == type(bitrate):
return bitrate
else:
register_exception(alert_admin=True)
raise
if getval(profile, 'videobitrate'):
profile['videobitrate'] = san_bitrate(getval(profile, 'videobitrate'))
if getval(profile, 'audiobitrate'):
profile['audiobitrate'] = san_bitrate(getval(profile, 'audiobitrate'))
return profile
#---------------------#
# Extraction profiles #
#---------------------#
def get_extract_profiles():
""" Returns a dictionary representation of the frame extraction profiles
"""
if not os.path.exists(CFG_BIBENCODE_PROFILES_EXTRACT_LOCAL):
shutil.copy(CFG_BIBENCODE_PROFILES_EXTRACT, CFG_BIBENCODE_PROFILES_EXTRACT_LOCAL)
default_profiles = json_decode_file(CFG_BIBENCODE_PROFILES_EXTRACT)
local_profiles = json_decode_file(CFG_BIBENCODE_PROFILES_EXTRACT_LOCAL)
default_profiles.update(local_profiles)
return default_profiles
def get_extract_profile(key):
""" Returns a dictionary representation of an extrtaction profile by key
"""
return get_extract_profiles()[key]

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