v4l2_dequeue_v4l2buf  442 libavcodec/v4l2_context.c           } while (v4l2_dequeue_v4l2buf(ctx, timeout));
v4l2_dequeue_v4l2buf  645 libavcodec/v4l2_context.c     avbuf = v4l2_dequeue_v4l2buf(ctx, timeout);
v4l2_dequeue_v4l2buf  665 libavcodec/v4l2_context.c     avbuf = v4l2_dequeue_v4l2buf(ctx, -1);