cam_extend_new
struct extend_array *cam_extend_new(void);
cdperiphs = cam_extend_new();
chperiphs = cam_extend_new();
daperiphs = cam_extend_new();
passperiphs = cam_extend_new();
ptperiphs = cam_extend_new();
saperiphs = cam_extend_new();
sesperiphs = cam_extend_new();