40 #define MIDIQ_INIT(head, buf, size) do {                \  argument
46 #define MIDIQ_EMPTY(head)       ((head).h == (head).t )  argument
48 #define MIDIQ_LENBASE(head)         ((head).h - (head).t < 0 ? \  argument
52 #define MIDIQ_FULL(head)        ((head).h == -1)  argument
53 #define MIDIQ_AVAIL(head)       (MIDIQ_FULL(head) ? 0 : (head).s - MIDIQ_LENBASE(head))  argument
54 #define MIDIQ_LEN(head)		((head).s - MIDIQ_AVAIL(head))  argument
59 #define MIDIQ_ENQ(head, buf, size) do {                                                            …  argument
79 #define MIDIQ_DEQ_I(head, buf, size, move, update) do {                                            …  argument
99 #define MIDIQ_SIZE(head) ((head).s)  argument
100 #define MIDIQ_CLEAR(head) ((head).h = (head).t = 0)  argument
101 #define MIDIQ_BUF(head) ((head).b)  argument
102 #define MIDIQ_DEQ(head, buf, size) MIDIQ_DEQ_I(head, buf, size, 1, 1)  argument
103 #define MIDIQ_PEEK(head, buf, size) MIDIQ_DEQ_I(head, buf, size, 1, 0)  argument
104 #define MIDIQ_POP(head, size) MIDIQ_DEQ_I(head, &head, size, 0, 1)  argument