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# python-gphoto2 - Python interface to libgphoto2
# http://github.com/jim-easterbrook/python-gphoto2
# Copyright (C) 2023-24 Jim Easterbrook jim@jim-easterbrook.me.uk
#
# This file is part of python-gphoto2.
#
# python-gphoto2 is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# python-gphoto2 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with python-gphoto2. If not, see
# <https://www.gnu.org/licenses/>.
import os
import gphoto2 as gp
def use_vcam(enable):
if 'IOLIBS' not in os.environ:
return
if enable:
os.environ['VCAMERADIR'] = os.path.join(
os.path.dirname(__file__), 'vcamera')
# switch to virtual camera from normal drivers
os.environ['IOLIBS'] = os.environ['IOLIBS'].replace('iolibs', 'vusb')
else:
# switch from virtual camera to normal drivers
os.environ['IOLIBS'] = os.environ['IOLIBS'].replace('vusb', 'iolibs')
def _has_vcam():
if 'IOLIBS' not in os.environ:
return False
vusb_dir = os.environ['IOLIBS'].replace('iolibs', 'vusb')
if not os.path.isdir(vusb_dir):
return False
gp_version = gp.gp_library_version(gp.GP_VERSION_SHORT)[0]
gp_version = tuple(int(x) for x in gp_version.split('.'))
if gp_version > (2, 5, 30):
return True
return False
has_vcam = _has_vcam()
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