In vid_port.c there is a function pjmedia_frame_copy being used for transfering frames from video port to video stream and vice versa. Currently it is based on pj_memcpy for the data buffer ( pj_memcpy(dst->buf, src->buf, dst->size);), is there any reason not to just use src buf pointer instead of using pj_memcpy (e.g. dst->buf = src->buf;)?
