1 /* 2 * $Header: bsd_audioirig.h,v 1.0 93/08/02 12:42:00 3 */ 4 5 #ifndef _BSD_AUDIOIRIG_H_ 6 #define _BSD_AUDIOIRIG_H_ 7 8 #include <sys/time.h> 9 10 /********************************************************************/ 11 /* user interface */ 12 13 /* 14 * irig ioctls 15 */ 16 #if defined(__STDC__) || (!defined(sun) && !defined(ibm032) && !defined(__GNUC)) 17 #define AUDIO_IRIG_OPEN _IO('A', 50) 18 #define AUDIO_IRIG_CLOSE _IO('A', 51) 19 #define AUDIO_IRIG_SETFORMAT _IOWR('A', 52, int) 20 #else 21 #define AUDIO_IRIG_OPEN _IO(A, 50) 22 #define AUDIO_IRIG_CLOSE _IO(A, 51) 23 #define AUDIO_IRIG_SETFORMAT _IOWR(A, 52, int) 24 #endif 25 26 /* 27 * irig error codes 28 */ 29 #define AUDIO_IRIG_BADSIGNAL 0x01 30 #define AUDIO_IRIG_BADDATA 0x02 31 #define AUDIO_IRIG_BADSYNC 0x04 32 #define AUDIO_IRIG_BADCLOCK 0x08 33 #define AUDIO_IRIG_OLDDATA 0x10 34 35 /********************************************************************/ 36 37 /* 38 * auib definitions 39 */ 40 #define AUIB_SIZE (0x0040) 41 #define AUIB_INC (0x0008) 42 #define AUIB_MOD(k) ((k) & 0x0038) 43 #define AUIB_INIT(ib) ((ib)->ib_head = (ib)->ib_tail = (ib)->ib_lock = \ 44 (ib)->phase = (ib)->shi = (ib)->slo = (ib)->high = \ 45 (ib)->level0 = (ib)->level1 = \ 46 (ib)->shift[0] = (ib)->shift[1] = (ib)->shift[2] = \ 47 (ib)->shift[3] = (ib)->sdata[0] = (ib)->sdata[1] = \ 48 (ib)->sdata[2] = (ib)->sdata[3] = (ib)->err = 0) 49 #define AUIB_EMPTY(ib) ((ib)->ib_head == (ib)->ib_tail) 50 #define AUIB_LEN(ib) (AUIB_MOD((ib)->ib_tail - (ib)->ib_head)) 51 #define AUIB_LEFT(ib) (AUIB_MOD((ib)->ib_head - (ib)->ib_tail - 1)) 52 #define IRIGDELAY 3 53 #define IRIGLEVEL 1355 54 55 #ifndef LOCORE 56 /* 57 * irig_time holds IRIG data for one second 58 */ 59 struct irig_time { 60 struct timeval stamp; /* timestamp */ 61 u_char bits[13]; /* 100 irig data bits */ 62 u_char status; /* status byte */ 63 char time[14]; /* time string */ 64 }; 65 66 /* 67 * auib's are used for IRIG data communication between the trap 68 * handler and the software interrupt. 69 */ 70 struct auib { 71 /* driver variables */ 72 u_short active; /* 0=inactive, else=active */ 73 u_short format; /* time output format */ 74 struct irig_time timestr; /* time structure */ 75 char buffer[14]; /* output formation buffer */ 76 77 /* hardware interrupt variables */ 78 struct timeval tv1,tv2,tv3; /* time stamps (median filter) */ 79 int level0,level1; /* lo/hi input levels */ 80 int level; /* decision level */ 81 int high; /* recent largest sample */ 82 int sl0,sl1; /* recent sample levels */ 83 int lasts; /* last sample value */ 84 u_short scount; /* sample count */ 85 u_long eacc; /* 10-bit element accumulator */ 86 u_long ebit; /* current bit in element */ 87 u_char r_level,mmr1; /* recording level 0-255 */ 88 int shi,slo,phase; /* AGC variables */ 89 u_long err; /* error status bits */ 90 int ecount; /* count of elements this second */ 91 long shift[4]; /* shift register of pos ident */ 92 long sdata[4]; /* shift register of symbols */ 93 94 int ib_head; /* queue head */ 95 int ib_tail; /* queue tail */ 96 u_short ib_lock; /* queue head lock */ 97 u_long ib_data[AUIB_SIZE]; /* data buffer */ 98 }; 99 #endif 100 101 #endif /* _BSD_AUDIOIRIG_H_ */ 102