def activate_(self, n_buffer, image_dimensions, shmem_name):
self.active = True<EOL>self.image_dimensions = image_dimensions<EOL>self.client = ShmemRGBClient(<EOL>name            =shmem_name,<EOL>n_ringbuffer    =n_buffer,   <EOL>width           =image_dimensions[<NUM_LIT:0>],<EOL>height          =image_dimensions[<NUM_LIT:1>],<EOL>mstimeout   =<NUM_LIT:1000>,<EOL>verbose     =False<EOL>)<EOL>self.postActivate_()<EOL>
Shared mem info is given.  Now we can create the shmem client