mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-01 22:58:47 -04:00
d806b19714
commands used for this (executed from the pulseaudio/src directory):
find . -regex '\(.*\.[hc]\|.*\.cc\|.*\.m4\)' -not -name 'macro.h' \
-a -not -name 'reserve.[ch]' -a -not -name 'reserve-monitor.[ch]' \
-a -not -name 'glib-mainloop.c' -a -not -name 'gkt-test.c' \
-a -not -name 'glib-mainloop.c' -a -not -name 'gkt-test.c' \
-a -not -name 'poll-win32.c' -a -not -name 'thread-win32.c' \
-a -not -name 'dllmain.c' -a -not -name 'gconf-helper.c' \
-exec sed -i -e 's/\bpa_bool_t\b/bool/g' \
-e 's/\bTRUE\b/true/g' -e 's/\bFALSE\b/false/g' {} \;
and:
sed -i -e '181,194!s/\bpa_bool_t\b/bool/' \
-e '181,194!s/\bTRUE\b/true/' -e \
'181,194!s/\bFALSE\b/false/' pulsecore/macro.h
269 lines
6.4 KiB
C
269 lines
6.4 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef OS_IS_DARWIN
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#define _POSIX_C_SOURCE 1
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#endif
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#include <stddef.h>
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#include <time.h>
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#include <sys/time.h>
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#include <errno.h>
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#ifdef HAVE_SYS_PRCTL_H
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#include <sys/prctl.h>
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#endif
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#ifdef OS_IS_DARWIN
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#include <CoreServices/CoreServices.h>
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#include <mach/mach.h>
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#include <mach/mach_time.h>
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#include <unistd.h>
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#endif
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#ifdef HAVE_WINDOWS_H
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#include <windows.h>
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#endif
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#include <pulse/timeval.h>
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#include <pulsecore/macro.h>
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#include <pulsecore/core-error.h>
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#include "core-rtclock.h"
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#ifdef OS_IS_WIN32
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static int64_t counter_freq = 0;
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#endif
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pa_usec_t pa_rtclock_age(const struct timeval *tv) {
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struct timeval now;
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pa_assert(tv);
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return pa_timeval_diff(pa_rtclock_get(&now), tv);
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}
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struct timeval *pa_rtclock_get(struct timeval *tv) {
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#if defined(OS_IS_DARWIN)
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uint64_t val, abs_time = mach_absolute_time();
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Nanoseconds nanos;
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nanos = AbsoluteToNanoseconds(*(AbsoluteTime *) &abs_time);
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val = *(uint64_t *) &nanos;
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tv->tv_sec = val / PA_NSEC_PER_SEC;
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tv->tv_usec = (val % PA_NSEC_PER_SEC) / PA_NSEC_PER_USEC;
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return tv;
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#elif defined(HAVE_CLOCK_GETTIME)
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struct timespec ts;
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#ifdef CLOCK_MONOTONIC
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/* No locking or atomic ops for no_monotonic here */
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static bool no_monotonic = false;
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if (!no_monotonic)
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if (clock_gettime(CLOCK_MONOTONIC, &ts) < 0)
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no_monotonic = true;
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if (no_monotonic)
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#endif /* CLOCK_MONOTONIC */
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pa_assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0);
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pa_assert(tv);
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tv->tv_sec = ts.tv_sec;
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tv->tv_usec = ts.tv_nsec / PA_NSEC_PER_USEC;
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return tv;
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#elif defined(OS_IS_WIN32)
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if (counter_freq > 0) {
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LARGE_INTEGER count;
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pa_assert_se(QueryPerformanceCounter(&count));
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tv->tv_sec = count.QuadPart / counter_freq;
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tv->tv_usec = (count.QuadPart % counter_freq) * PA_USEC_PER_SEC / counter_freq;
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return tv;
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}
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#endif /* HAVE_CLOCK_GETTIME */
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return pa_gettimeofday(tv);
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}
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bool pa_rtclock_hrtimer(void) {
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#if defined (OS_IS_DARWIN)
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mach_timebase_info_data_t tbi;
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uint64_t time_nsec;
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mach_timebase_info(&tbi);
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/* nsec = nticks * (N/D) - we want 1 tick == resolution !? */
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time_nsec = tbi.numer / tbi.denom;
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return time_nsec <= (long) (PA_HRTIMER_THRESHOLD_USEC*PA_NSEC_PER_USEC);
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#elif defined(HAVE_CLOCK_GETTIME)
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struct timespec ts;
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#ifdef CLOCK_MONOTONIC
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if (clock_getres(CLOCK_MONOTONIC, &ts) >= 0)
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return ts.tv_sec == 0 && ts.tv_nsec <= (long) (PA_HRTIMER_THRESHOLD_USEC*PA_NSEC_PER_USEC);
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#endif /* CLOCK_MONOTONIC */
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pa_assert_se(clock_getres(CLOCK_REALTIME, &ts) == 0);
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return ts.tv_sec == 0 && ts.tv_nsec <= (long) (PA_HRTIMER_THRESHOLD_USEC*PA_NSEC_PER_USEC);
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#elif defined(OS_IS_WIN32)
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if (counter_freq > 0)
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return counter_freq >= (int64_t) (PA_USEC_PER_SEC/PA_HRTIMER_THRESHOLD_USEC);
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#endif /* HAVE_CLOCK_GETTIME */
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return false;
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}
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#define TIMER_SLACK_NS (int) ((500 * PA_NSEC_PER_USEC))
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void pa_rtclock_hrtimer_enable(void) {
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#ifdef PR_SET_TIMERSLACK
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int slack_ns;
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if ((slack_ns = prctl(PR_GET_TIMERSLACK, 0, 0, 0, 0)) < 0) {
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pa_log_info("PR_GET_TIMERSLACK/PR_SET_TIMERSLACK not supported.");
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return;
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}
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pa_log_debug("Timer slack is set to %i us.", (int) (slack_ns/PA_NSEC_PER_USEC));
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if (slack_ns > TIMER_SLACK_NS) {
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slack_ns = TIMER_SLACK_NS;
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pa_log_debug("Setting timer slack to %i us.", (int) (slack_ns/PA_NSEC_PER_USEC));
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if (prctl(PR_SET_TIMERSLACK, slack_ns, 0, 0, 0) < 0) {
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pa_log_warn("PR_SET_TIMERSLACK failed: %s", pa_cstrerror(errno));
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return;
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}
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}
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#elif defined(OS_IS_WIN32)
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LARGE_INTEGER freq;
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pa_assert_se(QueryPerformanceFrequency(&freq));
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counter_freq = freq.QuadPart;
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#endif
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}
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struct timeval* pa_rtclock_from_wallclock(struct timeval *tv) {
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struct timeval wc_now, rt_now;
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pa_assert(tv);
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pa_gettimeofday(&wc_now);
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pa_rtclock_get(&rt_now);
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/* pa_timeval_sub() saturates on underflow! */
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if (pa_timeval_cmp(&wc_now, tv) < 0)
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pa_timeval_add(&rt_now, pa_timeval_diff(tv, &wc_now));
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else
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pa_timeval_sub(&rt_now, pa_timeval_diff(&wc_now, tv));
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*tv = rt_now;
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return tv;
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}
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#ifdef HAVE_CLOCK_GETTIME
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pa_usec_t pa_timespec_load(const struct timespec *ts) {
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if (PA_UNLIKELY(!ts))
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return PA_USEC_INVALID;
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return
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(pa_usec_t) ts->tv_sec * PA_USEC_PER_SEC +
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(pa_usec_t) ts->tv_nsec / PA_NSEC_PER_USEC;
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}
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struct timespec* pa_timespec_store(struct timespec *ts, pa_usec_t v) {
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pa_assert(ts);
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if (PA_UNLIKELY(v == PA_USEC_INVALID)) {
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ts->tv_sec = PA_INT_TYPE_MAX(time_t);
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ts->tv_nsec = (long) (PA_NSEC_PER_SEC-1);
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return NULL;
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}
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ts->tv_sec = (time_t) (v / PA_USEC_PER_SEC);
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ts->tv_nsec = (long) ((v % PA_USEC_PER_SEC) * PA_NSEC_PER_USEC);
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return ts;
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}
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#endif
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static struct timeval* wallclock_from_rtclock(struct timeval *tv) {
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struct timeval wc_now, rt_now;
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pa_assert(tv);
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pa_gettimeofday(&wc_now);
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pa_rtclock_get(&rt_now);
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/* pa_timeval_sub() saturates on underflow! */
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if (pa_timeval_cmp(&rt_now, tv) < 0)
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pa_timeval_add(&wc_now, pa_timeval_diff(tv, &rt_now));
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else
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pa_timeval_sub(&wc_now, pa_timeval_diff(&rt_now, tv));
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*tv = wc_now;
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return tv;
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}
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struct timeval* pa_timeval_rtstore(struct timeval *tv, pa_usec_t v, bool rtclock) {
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pa_assert(tv);
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if (v == PA_USEC_INVALID)
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return NULL;
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pa_timeval_store(tv, v);
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if (rtclock)
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tv->tv_usec |= PA_TIMEVAL_RTCLOCK;
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else
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wallclock_from_rtclock(tv);
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return tv;
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}
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