--- /dev/null
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 Lennart Poettering
+ Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ PulseAudio is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stddef.h>
+#include <sys/time.h>
+
+#include <pulse/timeval.h>
+#include <pulsecore/macro.h>
+
+#include "rtclock.h"
+
+struct timespec *pa_timespec_store(struct timespec *a, pa_usec_t u) {
+ pa_assert(a);
+
+ a->tv_sec = u / PA_USEC_PER_SEC;
+
+ u -= (pa_usec_t) a->tv_sec * PA_USEC_PER_SEC;
+
+ a->tv_nsec = u * 1000;
+
+ return a;
+}
+
+pa_usec_t pa_timespec_load(struct timespec *ts) {
+ pa_assert(ts);
+
+ return (pa_usec_t) ts->tv_sec * PA_USEC_PER_SEC + (pa_usec_t) (ts->tv_nsec / 1000);
+}
+
+pa_usec_t pa_timespec_diff(const struct timespec *a, const struct timespec *b) {
+ pa_usec_t r;
+
+ pa_assert(a);
+ pa_assert(b);
+
+ /* Check which whan is the earlier time and swap the two arguments if required. */
+ if (pa_timespec_cmp(a, b) < 0) {
+ const struct timespec *c;
+ c = a;
+ a = b;
+ b = c;
+ }
+
+ /* Calculate the second difference*/
+ r = ((pa_usec_t) a->tv_sec - b->tv_sec) * PA_USEC_PER_SEC;
+
+ /* Calculate the microsecond difference */
+ if (a->tv_nsec > b->tv_nsec)
+ r += (pa_usec_t) ((a->tv_nsec - b->tv_nsec) / 1000);
+ else if (a->tv_nsec < b->tv_nsec)
+ r -= (pa_usec_t) ((b->tv_nsec - a->tv_nsec) / 1000);
+
+ return r;
+}
+
+int pa_timespec_cmp(const struct timespec *a, const struct timespec *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ if (a->tv_sec < b->tv_sec)
+ return -1;
+
+ if (a->tv_sec > b->tv_sec)
+ return 1;
+
+ if (a->tv_nsec < b->tv_nsec)
+ return -1;
+
+ if (a->tv_nsec > b->tv_nsec)
+ return 1;
+
+ return 0;
+}
+
+struct timespec* pa_timespec_add(struct timespec *ts, pa_usec_t v) {
+ unsigned long secs;
+ pa_assert(ts);
+
+ secs = (unsigned long) (v/PA_USEC_PER_SEC);
+ ts->tv_sec += secs;
+ v -= ((pa_usec_t) secs) * PA_USEC_PER_SEC;
+
+ ts->tv_nsec += (long) (v*1000);
+
+ /* Normalize */
+ while (ts->tv_nsec >= PA_NSEC_PER_SEC) {
+ ts->tv_sec++;
+ ts->tv_nsec -= PA_NSEC_PER_SEC;
+ }
+
+ return ts;
+}
+
+pa_usec_t pa_rtclock_age(const struct timespec *ts) {
+ struct timespec now;
+ pa_assert(ts);
+
+ return pa_timespec_diff(pa_rtclock_get(&now), ts);
+}
+
+struct timespec *pa_rtclock_get(struct timespec *ts) {
+ static int no_monotonic = 0;
+
+ /* No locking or atomic ops for no_monotonic here */
+
+ pa_assert(ts);
+
+ if (!no_monotonic) {
+ if (clock_gettime(CLOCK_MONOTONIC, ts) >= 0)
+ return ts;
+
+ no_monotonic = 1;
+ }
+
+ pa_assert_se(clock_gettime(CLOCK_REALTIME, ts) == 0);
+ return ts;
+}
+
+int pa_rtclock_hrtimer(void) {
+ struct timespec ts;
+
+ if (clock_getres(CLOCK_MONOTONIC, &ts) >= 0)
+ return ts.tv_sec == 0 && ts.tv_nsec <= PA_HRTIMER_THRESHOLD_USEC*1000;
+
+ pa_assert_se(clock_getres(CLOCK_REALTIME, &ts) == 0);
+ return ts.tv_sec == 0 && ts.tv_nsec <= PA_HRTIMER_THRESHOLD_USEC*1000;
+}
+
--- /dev/null
+#ifndef foopulsertclockhfoo
+#define foopulsertclockhfoo
+
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 Lennart Poettering
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ PulseAudio is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#include <sys/types.h>
+#include <time.h>
+
+#include <pulse/sample.h>
+
+/* Something like pulse/timeval.h but based on CLOCK_MONOTONIC and
+ * timespec instead of timeval */
+
+struct timespec *pa_rtclock_get(struct timespec *ts);
+pa_usec_t pa_rtclock_age(const struct timespec *tv);
+int pa_rtclock_hrtimer(void);
+
+struct timespec *pa_timespec_store(struct timespec *a, pa_usec_t u);
+pa_usec_t pa_timespec_load(struct timespec *tv);
+struct timespec *pa_timespec_add(struct timespec *tv, pa_usec_t t);
+pa_usec_t pa_timespec_diff(const struct timespec *a, const struct timespec *b);
+int pa_timespec_cmp(const struct timespec *a, const struct timespec *b);
+
+/* timer with a resolution better than this are considered high-resolution */
+#define PA_HRTIMER_THRESHOLD_USEC 10
+
+#endif