def uid_from_name(pattern):
# looking for attached cameras that match the suggested names
# give precedence to camera that matches the first pattern in list.
matching_devices = []
attached_devices = device_list()
for name_pattern in pattern:
for device in attached_devices:
if name_pattern in device['name']:
if is_accessible(device['uid']):
return device['uid']
else:
logger.warning("Camera '%s' matches the pattern but is already in use"%device['name'])
logger.error('No accessible device found that matched %s'%pattern)
def uid_from_name(pattern):
# looking for attached cameras that match the suggested names
# give precedence to camera that matches the first pattern in list.
matching_devices = []
attached_devices = device_list()
for name_pattern in pattern:
for device in attached_devices:
if name_pattern in device['name']:
if is_accessible(device['uid']):
return device['uid']
else:
logger.warning(
"Camera '%s' matches the pattern but is already in use"
% device['name'])
logger.error('No accessible device found that matched %s' % pattern)
def autoCreateCapture(src, timestamps=None, timebase=None):
'''
src can be one of the following:
- a path to video file
- patter of name matches
- a device index
- None
'''
# video source
if type(src) is str and os.path.isfile(src):
return File_Capture(src, timestamps=timestamps)
# live src - select form idx
if type(src) == int:
try:
uid = device_list()[src]['uid']
except IndexError:
logger.warning("UVC Camera at index:'%s' not found." % src)
src = None
else:
if is_accessible(uid):
logger.info("UVC Camera with id:'%s' selected." % src)
return Camera_Capture(uid, timebase=timebase)
else:
logger.warning(
"Camera selected by id matches is found but already in use"
)
src = None
# live src - select form pattern
elif type(src) in (list, tuple):
src = uid_from_name(src)
# fake capture
if src is None:
logger.warning("Starting with Fake_Capture.")
return Camera_Capture(src, timebase=timebase)
def autoCreateCapture(src,timestamps=None,timebase = None):
'''
src can be one of the following:
- a path to video file
- patter of name matches
- a device index
- None
'''
# video source
if type(src) is str and os.path.isfile(src):
return File_Capture(src,timestamps=timestamps)
# live src - select form idx
if type(src) == int:
try:
uid = device_list()[src]['uid']
except IndexError:
logger.warning("UVC Camera at index:'%s' not found."%src)
src = None
else:
if is_accessible(uid):
logger.info("UVC Camera with id:'%s' selected."%src)
return Camera_Capture(uid,timebase=timebase)
else:
logger.warning("Camera selected by id matches is found but already in use")
src = None
# live src - select form pattern
elif type(src) in (list,tuple):
src = uid_from_name(src)
# fake capture
if src is None:
logger.warning("Starting with Fake_Capture.")
return Camera_Capture(src,timebase=timebase)
