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-rw-r--r--libOSC/OSC-timetag.c348
1 files changed, 173 insertions, 175 deletions
diff --git a/libOSC/OSC-timetag.c b/libOSC/OSC-timetag.c
index 639eae9..92e3735 100644
--- a/libOSC/OSC-timetag.c
+++ b/libOSC/OSC-timetag.c
@@ -1,175 +1,173 @@
-/*
-Copyright (c) 1998. The Regents of the University of California (Regents).
-All Rights Reserved.
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for educational, research, and not-for-profit purposes, without
-fee and without a signed licensing agreement, is hereby granted, provided that
-the above copyright notice, this paragraph and the following two paragraphs
-appear in all copies, modifications, and distributions. Contact The Office of
-Technology Licensing, UC Berkeley, 2150 Shattuck Avenue, Suite 510, Berkeley,
-CA 94720-1620, (510) 643-7201, for commercial licensing opportunities.
-
-Written by Matt Wright, The Center for New Music and Audio Technologies,
-University of California, Berkeley.
-
- IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
- SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
- ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
- REGENTS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- FOR A PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING
- DOCUMENTATION, IF ANY, PROVIDED HEREUNDER IS PROVIDED "AS IS".
- REGENTS HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
- ENHANCEMENTS, OR MODIFICATIONS.
-
-The OpenSound Control WWW page is
- http://www.cnmat.berkeley.edu/OpenSoundControl
-*/
-
-/*
-
- OSC_timeTag.c: library for manipulating OSC time tags
- Matt Wright, 5/29/97
-
- Version 0.2 (9/11/98): cleaned up so no explicit type names in the .c file.
-
-*/
-
-#include "OSC-timetag.h"
-
-
-#ifdef HAS8BYTEINT
-#define TWO_TO_THE_32_FLOAT 4294967296.0f
-
-OSCTimeTag OSCTT_Immediately(void) {
- return (OSCTimeTag) 1;
-}
-
-OSCTimeTag OSCTT_BiggestPossibleTimeTag(void) {
- return (OSCTimeTag) 0xffffffffffffffff;
-}
-
-OSCTimeTag OSCTT_PlusSeconds(OSCTimeTag original, float secondsOffset) {
- int64 offset = (int64) (secondsOffset * TWO_TO_THE_32_FLOAT);
-
-/* printf("* OSCTT_PlusSeconds %llx plus %f seconds (i.e., %lld offset) is %llx\n", original,
- secondsOffset, offset, original + offset); */
-
- return original + offset;
-}
-
-int OSCTT_Compare(OSCTimeTag left, OSCTimeTag right) {
-#if 0
- printf("***** OSCTT_Compare(%llx, %llx): %d\n", left, right,
- (left<right) ? -1 : ((left == right) ? 0 : 1));
-#endif
- if (left < right) {
- return -1;
- } else if (left == right) {
- return 0;
- } else {
- return 1;
- }
-}
-
-#ifdef __sgi
-#include <sys/time.h>
-
-#define SECONDS_FROM_1900_to_1970 2208988800 /* 17 leap years */
-#define TWO_TO_THE_32_OVER_ONE_MILLION 4295
-
-
-OSCTimeTag OSCTT_CurrentTime(void) {
- uint64 result;
- uint32 usecOffset;
- struct timeval tv;
- struct timezone tz;
-
- BSDgettimeofday(&tv, &tz);
-
- /* First get the seconds right */
- result = (unsigned) SECONDS_FROM_1900_to_1970 +
- (unsigned) tv.tv_sec -
- (unsigned) 60 * tz.tz_minuteswest +
- (unsigned) (tz.tz_dsttime ? 3600 : 0);
-
-#if 0
- /* No timezone, no DST version ... */
- result = (unsigned) SECONDS_FROM_1900_to_1970 +
- (unsigned) tv.tv_sec;
-#endif
-
-
- /* make seconds the high-order 32 bits */
- result = result << 32;
-
- /* Now get the fractional part. */
- usecOffset = (unsigned) tv.tv_usec * (unsigned) TWO_TO_THE_32_OVER_ONE_MILLION;
- /* printf("** %ld microsec is offset %x\n", tv.tv_usec, usecOffset); */
-
- result += usecOffset;
-
-/* printf("* OSCTT_CurrentTime is %llx\n", result); */
- return result;
-}
-
-#else /* __sgi */
-
-/* Instead of asking your operating system what time it is, it might be
- clever to find out the current time at the instant your application
- starts audio processing, and then keep track of the number of samples
- output to know how much time has passed. */
-
-/* Loser version for systems that have no ability to tell the current time: */
-OSCTimeTag OSCTT_CurrentTime(void) {
- return (OSCTimeTag) 1;
-}
-
-#endif /* __sgi */
-
-
-#else /* Not HAS8BYTEINT */
-
-OSCTimeTag OSCTT_CurrentTime(void) {
- OSCTimeTag result;
- result.seconds = 0;
- result.fraction = 1;
- return result;
-}
-
-OSCTimeTag OSCTT_BiggestPossibleTimeTag(void) {
- OSCTimeTag result;
- result.seconds = 0xffffffff;
- result.fraction = 0xffffffff;
- return result;
-}
-
-OSCTimeTag OSCTT_Immediately(void) {
- OSCTimeTag result;
- result.seconds = 0;
- result.fraction = 1;
- return result;
-}
-
-OSCTimeTag OSCTT_PlusSeconds(OSCTimeTag original, float secondsOffset) {
- OSCTimeTag result;
- result.seconds = 0;
- result.fraction = 1;
- return result;
-}
-
-int OSCTT_Compare(OSCTimeTag left, OSCTimeTag right) {
- /* Untested! */
- int highResult = left.seconds - right.seconds;
-
- if (highResult != 0) return highResult;
-
- return left.fraction - right.fraction;
-}
-
-
-#endif /* HAS8BYTEINT */
-
+/*
+Copyright © 1998. The Regents of the University of California (Regents).
+All Rights Reserved.
+
+Written by Matt Wright, The Center for New Music and Audio Technologies,
+University of California, Berkeley.
+
+Permission to use, copy, modify, distribute, and distribute modified versions
+of this software and its documentation without fee and without a signed
+licensing agreement, is hereby granted, provided that the above copyright
+notice, this paragraph and the following two paragraphs appear in all copies,
+modifications, and distributions.
+
+IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
+SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING
+OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
+BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
+HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE
+MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+
+The OpenSound Control WWW page is
+ http://www.cnmat.berkeley.edu/OpenSoundControl
+*/
+
+
+/*
+
+ OSC_timeTag.c: library for manipulating OSC time tags
+ Matt Wright, 5/29/97
+
+ Version 0.2 (9/11/98): cleaned up so no explicit type names in the .c file.
+
+*/
+
+#include "OSC-timetag.h"
+
+
+#ifdef HAS8BYTEINT
+#define TWO_TO_THE_32_FLOAT 4294967296.0f
+
+OSCTimeTag OSCTT_Immediately(void) {
+ return (OSCTimeTag) 1;
+}
+
+OSCTimeTag OSCTT_BiggestPossibleTimeTag(void) {
+ return (OSCTimeTag) 0xffffffffffffffff;
+}
+
+OSCTimeTag OSCTT_PlusSeconds(OSCTimeTag original, float secondsOffset) {
+ int8 offset = (int8) (secondsOffset * TWO_TO_THE_32_FLOAT);
+
+/* printf("* OSCTT_PlusSeconds %llx plus %f seconds (i.e., %lld offset) is %llx\n", original,
+ secondsOffset, offset, original + offset); */
+
+ return original + offset;
+}
+
+int OSCTT_Compare(OSCTimeTag left, OSCTimeTag right) {
+#if 0
+ printf("***** OSCTT_Compare(%llx, %llx): %d\n", left, right,
+ (left<right) ? -1 : ((left == right) ? 0 : 1));
+#endif
+ if (left < right) {
+ return -1;
+ } else if (left == right) {
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+#ifdef __sgi
+#include <sys/time.h>
+
+#define SECONDS_FROM_1900_to_1970 2208988800 /* 17 leap years */
+#define TWO_TO_THE_32_OVER_ONE_MILLION 4295
+
+
+OSCTimeTag OSCTT_CurrentTime(void) {
+ uint8 result;
+ uint4 usecOffset;
+ struct timeval tv;
+ struct timezone tz;
+
+ BSDgettimeofday(&tv, &tz);
+
+ /* First get the seconds right */
+ result = (unsigned) SECONDS_FROM_1900_to_1970 +
+ (unsigned) tv.tv_sec -
+ (unsigned) 60 * tz.tz_minuteswest +
+ (unsigned) (tz.tz_dsttime ? 3600 : 0);
+
+#if 0
+ /* No timezone, no DST version ... */
+ result = (unsigned) SECONDS_FROM_1900_to_1970 +
+ (unsigned) tv.tv_sec;
+#endif
+
+
+ /* make seconds the high-order 32 bits */
+ result = result << 32;
+
+ /* Now get the fractional part. */
+ usecOffset = (unsigned) tv.tv_usec * (unsigned) TWO_TO_THE_32_OVER_ONE_MILLION;
+ /* printf("** %ld microsec is offset %x\n", tv.tv_usec, usecOffset); */
+
+ result += usecOffset;
+
+/* printf("* OSCTT_CurrentTime is %llx\n", result); */
+ return result;
+}
+
+#else /* __sgi */
+
+/* Instead of asking your operating system what time it is, it might be
+ clever to find out the current time at the instant your application
+ starts audio processing, and then keep track of the number of samples
+ output to know how much time has passed. */
+
+/* Loser version for systems that have no ability to tell the current time: */
+OSCTimeTag OSCTT_CurrentTime(void) {
+ return (OSCTimeTag) 1;
+}
+
+#endif /* __sgi */
+
+
+#else /* Not HAS8BYTEINT */
+
+OSCTimeTag OSCTT_CurrentTime(void) {
+ OSCTimeTag result;
+ result.seconds = 0;
+ result.fraction = 1;
+ return result;
+}
+
+OSCTimeTag OSCTT_BiggestPossibleTimeTag(void) {
+ OSCTimeTag result;
+ result.seconds = 0xffffffff;
+ result.fraction = 0xffffffff;
+ return result;
+}
+
+OSCTimeTag OSCTT_Immediately(void) {
+ OSCTimeTag result;
+ result.seconds = 0;
+ result.fraction = 1;
+ return result;
+}
+
+OSCTimeTag OSCTT_PlusSeconds(OSCTimeTag original, float secondsOffset) {
+ OSCTimeTag result;
+ result.seconds = 0;
+ result.fraction = 1;
+ return result;
+}
+
+int OSCTT_Compare(OSCTimeTag left, OSCTimeTag right) {
+ /* Untested! */
+ int highResult = left.seconds - right.seconds;
+
+ if (highResult != 0) return highResult;
+
+ return left.fraction - right.fraction;
+}
+
+
+#endif /* HAS8BYTEINT */
+
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