def _link_library(self, lib_path, convention):
"""Find and link the external librairy if only a path was provided.
"""
if convention == 'cdll':
return cdll.LoadLibrary(lib_path)
elif convention == 'windll':
return windll.LoadLibrary(lib_path)
elif convention == 'oledll':
return oledll.LoadLibrary(lib_path)
else:
raise ValueError('Convention cannot be {}'.format(convention))
def _create_object_from_path (self, clsid, dll_filename, interface=IBaseFilter): iclassfactory = self._raw_guid(IClassFactory._iid_) my_dll = oledll.LoadLibrary(dll_filename) factory_ptr = c_void_p(0) hr = my_dll.DllGetClassObject(self._raw_guid(clsid), iclassfactory, byref(factory_ptr)) if hr!=S_OK: raise COMError(hr, '', '') ptr_icf = POINTER(IClassFactory)(factory_ptr.value) unk = ptr_icf.CreateInstance() # if ScreenCam or SpoutCam is loaded from local file, we also grab its property page if clsid==CLSID_ScreenCam or clsid==CLSID_SpoutCam: factory_ptr = c_void_p(0) hr = my_dll.DllGetClassObject( self._raw_guid(CLSID_SpoutCamPropertyPage if clsid==CLSID_SpoutCam else CLSID_ScreenCamPropertyPage), iclassfactory, byref(factory_ptr)) if hr!=S_OK: raise COMError(hr, '', '') ptr_icf = POINTER(IClassFactory)(factory_ptr.value) unk2 = ptr_icf.CreateInstance() self._page = unk2.QueryInterface(IPropertyPage) return unk.QueryInterface(interface)
"""
from __future__ import print_function
import time
from enum import Enum
from ctypes import (c_int32, c_bool, byref, create_string_buffer, Structure,
POINTER, oledll)
from . import Motion
from .. import _ParamDict
from ..util import check_units, check_enums
from ...errors import InstrumentTypeError, InstrumentNotFoundError
from ... import Q_
# __all__ = ['LinearStage', 'Goniometer', 'RotationStage', 'ECC100']
lib = oledll.LoadLibrary('ecc.dll')
_err_map = {
-1: 'Unspecified error.',
1: 'Communication timeout.',
2: 'No active connection to device.',
3: 'Error in communication with driver.',
7: 'Device is already in use.',
9: 'Parameter out of range.',
10: 'Feature only available in pro version.'
}
def _instrument(params):
""" Possible params include 'ecc100_id', 'module'
Note that ecc100_id should be a string"""