pop_front         688 libde265/decctx.cc     pop_front(imgunit->slice_units);
pop_front         750 libde265/decctx.cc     pop_front(image_units);
pop_front         272 libde265/dpb.cc   image_output_queue.pop_front();
pop_front         208 libde265/threads.cc     pool->tasks.pop_front();