def descriptors(self):
"""
Get the set of descriptor instances contained in this set as a tuple.
:return: A tuple of the contained descriptor instances.
:rtype: tuple[Descriptor]
"""
out_d_array = ctypes.POINTER(Descriptor.c_ptr_type())()
out_d_array_size = ctypes.c_size_t()
self._call_cfunc(
'vital_descriptor_set_get_descriptors',
[
self.C_TYPE_PTR,
ctypes.POINTER(ctypes.POINTER(Descriptor.c_ptr_type())),
ctypes.POINTER(ctypes.c_size_t)
],
[self,
ctypes.byref(out_d_array),
ctypes.byref(out_d_array_size)],
)
d_list = []
for i in range(out_d_array_size.value):
cptr = Descriptor.c_ptr_type()(out_d_array[i].contents)
d_list.append(Descriptor(from_cptr=cptr))
free_void_ptr(out_d_array)
return d_list
def _new(self, descriptor_list):
"""
Create a new descriptor set instance from a list of descriptor elements.
:param descriptor_list: List of child descriptor instance handles.
:type descriptor_list: list[Descriptor]
"""
if descriptor_list is None:
descriptor_list = []
c_descriptor_array = (Descriptor.c_ptr_type() * len(descriptor_list))(
*(d.c_pointer for d in descriptor_list))
return self._call_cfunc(
'vital_descriptor_set_new',
[ctypes.POINTER(Descriptor.c_ptr_type()), ctypes.c_size_t],
[c_descriptor_array, len(descriptor_list)], self.C_TYPE_PTR)
def descriptor(self):
d_ptr = self._call_cfunc("vital_track_state_descriptor",
[self.C_TYPE_PTR], [self],
Descriptor.c_ptr_type())
if d_ptr:
return Descriptor(from_cptr=d_ptr)
else:
return None
def _new(self, frame, feature, descriptor):
"""
:param feature: Optional Feature instance associated with this state.
:type feature: vital.types.Feature
:param descriptor: Optional Descriptor instance associated with this
state.
:type descriptor: vital.types.Descriptor
"""
return self._call_cfunc(
"vital_feature_track_state_new",
[ctypes.c_int64, Feature.c_ptr_type(), Descriptor.c_ptr_type()],
[frame, feature, descriptor],
self.C_TYPE_PTR
)
