sound/midi/midiq.h

40 #define MIDIQ_INIT(head, buf, size) do {                \
41         (head).h=(head).t=0;                          \
42         (head).s=size;                                 \
43         (head).b=buf;                                  \
46 #define MIDIQ_EMPTY(head)       ((head).h == (head).t )
48 #define MIDIQ_LENBASE(head)         ((head).h - (head).t < 0 ? \
49                                         (head).h - (head).t + (head).s : \
50                                         (head).h - (head).t)
52 #define MIDIQ_FULL(head)        ((head).h == -1)
53 #define MIDIQ_AVAIL(head)       (MIDIQ_FULL(head) ? 0 : (head).s - MIDIQ_LENBASE(head))
54 #define MIDIQ_LEN(head)		((head).s - MIDIQ_AVAIL(head))
59 #define MIDIQ_ENQ(head, buf, size) do {                                                                 \
62 			       &(head).b[(head).h], (buf),                                        \
63 			       (intmax_t)(sizeof(*(head).b) *                                     \
64 					  MIN( (size), (head).s - (head).h) ),                   \
65 			       (size), (head).h, (head).t);               \
66                 MIDIQ_MOVE(&(head).b[(head).h], (buf), sizeof(*(head).b) * MIN((size), (head).s - (head).h));                       \
67                 if( (head).s - (head).h < (size) ) {                                                    \
69                         	printf("#2 %p %p bytes copied %jd\n",  (head).b, (buf) + (head).s - (head).h, (intmax_t)sizeof(*(head).b) * ((size) - (head).s + (head).h) );      \
70                         MIDIQ_MOVE((head).b, (buf) + (head).s - (head).h, sizeof(*(head).b) * ((size) - (head).s + (head).h) );      \
72                 (head).h+=(size);                                                                         \
73                 (head).h%=(head).s;                                                                     \
74 		if(MIDIQ_EMPTY(head)) (head).h=-1; \
76                 	printf("#E h %d t %d\n", (head).h, (head).t);                       \
79 #define MIDIQ_DEQ_I(head, buf, size, move, update) do {                                                                 \
80 		if(MIDIQ_FULL(head)) (head).h=(head).t; \
82                 	printf("#1 %p %p bytes copied %jd tran req s %d h %d t %d\n", &(head).b[(head).t], (buf), (intmax_t)sizeof(*(head).b) * MIN((size), (head).s - (head).t), (size), (head).h, (head).t);                       \
83                 if (move) MIDIQ_MOVE((buf), &(head).b[(head).t], sizeof(*(head).b) * MIN((size), (head).s - (head).t));                       \
84                 if( (head).s - (head).t < (size) ) {                                                    \
86                         	printf("#2 %p %p bytes copied %jd\n",  (head).b, (buf) + (head).s - (head).t, (intmax_t)sizeof(*(head).b) * ((size) - (head).s + (head).t) );      \
87                         if (move) MIDIQ_MOVE((buf) + (head).s - (head).t, (head).b, sizeof(*(head).b) * ((size) - (head).s + (head).t) );      \
90                 (head).t+=(size);                                                                         \
91                 (head).t%=(head).s;                                                                     \
93 		  if (MIDIQ_EMPTY(head)) (head).h=-1; \
96                 	printf("#E h %d t %d\n", (head).h, (head).t);                       \
99 #define MIDIQ_SIZE(head) ((head).s)
100 #define MIDIQ_CLEAR(head) ((head).h = (head).t = 0)
101 #define MIDIQ_BUF(head) ((head).b)
102 #define MIDIQ_DEQ(head, buf, size) MIDIQ_DEQ_I(head, buf, size, 1, 1)
103 #define MIDIQ_PEEK(head, buf, size) MIDIQ_DEQ_I(head, buf, size, 1, 0)
104 #define MIDIQ_POP(head, size) MIDIQ_DEQ_I(head, &head, size, 0, 1)