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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:03:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:03:18 +0000
commit2dd5bc6a074165ddfbd57c4bd52c2d2dac8f47a1 (patch)
tree465b29cb405d3af0b0ad50c78e1dccc636594fec /src/pulse/timeval.c
parentInitial commit. (diff)
downloadpulseaudio-2dd5bc6a074165ddfbd57c4bd52c2d2dac8f47a1.tar.xz
pulseaudio-2dd5bc6a074165ddfbd57c4bd52c2d2dac8f47a1.zip
Adding upstream version 14.2.upstream/14.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--src/pulse/timeval.c211
1 files changed, 211 insertions, 0 deletions
diff --git a/src/pulse/timeval.c b/src/pulse/timeval.c
new file mode 100644
index 0000000..e991c33
--- /dev/null
+++ b/src/pulse/timeval.c
@@ -0,0 +1,211 @@
+/***
+ 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, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stddef.h>
+#include <sys/time.h>
+
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+
+#include <pulsecore/macro.h>
+#include <pulsecore/core-util.h>
+
+#include "timeval.h"
+
+struct timeval *pa_gettimeofday(struct timeval *tv) {
+ pa_assert(tv);
+
+#if defined(OS_IS_WIN32)
+ /*
+ * Copied from implementation by Steven Edwards (LGPL).
+ * Found on wine mailing list.
+ */
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+#define EPOCHFILETIME (116444736000000000i64)
+#else
+#define EPOCHFILETIME (116444736000000000LL)
+#endif
+{
+ FILETIME ft;
+ LARGE_INTEGER li;
+ int64_t t;
+
+ GetSystemTimeAsFileTime(&ft);
+ li.LowPart = ft.dwLowDateTime;
+ li.HighPart = ft.dwHighDateTime;
+ t = li.QuadPart; /* In 100-nanosecond intervals */
+ t -= EPOCHFILETIME; /* Offset to the Epoch time */
+ t /= 10; /* In microseconds */
+ tv->tv_sec = (time_t) (t / PA_USEC_PER_SEC);
+ tv->tv_usec = (suseconds_t) (t % PA_USEC_PER_SEC);
+}
+#elif defined(HAVE_GETTIMEOFDAY)
+ pa_assert_se(gettimeofday(tv, NULL) == 0);
+#else
+#error "Platform lacks gettimeofday() or equivalent function."
+#endif
+
+ return tv;
+}
+
+pa_usec_t pa_timeval_diff(const struct timeval *a, const struct timeval *b) {
+ pa_usec_t r;
+
+ pa_assert(a);
+ pa_assert(b);
+
+ /* Check which is the earlier time and swap the two arguments if required. */
+ if (PA_UNLIKELY(pa_timeval_cmp(a, b) < 0)) {
+ const struct timeval *c;
+ c = a;
+ a = b;
+ b = c;
+ }
+
+ /* Calculate the second difference*/
+ r = ((pa_usec_t) a->tv_sec - (pa_usec_t) b->tv_sec) * PA_USEC_PER_SEC;
+
+ /* Calculate the microsecond difference */
+ if (a->tv_usec > b->tv_usec)
+ r += (pa_usec_t) a->tv_usec - (pa_usec_t) b->tv_usec;
+ else if (a->tv_usec < b->tv_usec)
+ r -= (pa_usec_t) b->tv_usec - (pa_usec_t) a->tv_usec;
+
+ return r;
+}
+
+int pa_timeval_cmp(const struct timeval *a, const struct timeval *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_usec < b->tv_usec)
+ return -1;
+
+ if (a->tv_usec > b->tv_usec)
+ return 1;
+
+ return 0;
+}
+
+pa_usec_t pa_timeval_age(const struct timeval *tv) {
+ struct timeval now;
+ pa_assert(tv);
+
+ return pa_timeval_diff(pa_gettimeofday(&now), tv);
+}
+
+struct timeval* pa_timeval_add(struct timeval *tv, pa_usec_t v) {
+ time_t secs;
+ pa_assert(tv);
+
+ secs = (time_t) (v/PA_USEC_PER_SEC);
+
+ if (PA_UNLIKELY(tv->tv_sec > PA_INT_TYPE_MAX(time_t) - secs))
+ goto overflow;
+
+ tv->tv_sec += secs;
+ v -= (pa_usec_t) secs * PA_USEC_PER_SEC;
+ tv->tv_usec += (suseconds_t) v;
+
+ /* Normalize */
+ while ((pa_usec_t) tv->tv_usec >= PA_USEC_PER_SEC) {
+
+ if (PA_UNLIKELY(tv->tv_sec >= PA_INT_TYPE_MAX(time_t)))
+ goto overflow;
+
+ tv->tv_sec++;
+ tv->tv_usec -= (suseconds_t) PA_USEC_PER_SEC;
+ }
+
+ return tv;
+
+overflow:
+ tv->tv_sec = PA_INT_TYPE_MAX(time_t);
+ tv->tv_usec = (suseconds_t) (PA_USEC_PER_SEC-1);
+ return tv;
+}
+
+struct timeval* pa_timeval_sub(struct timeval *tv, pa_usec_t v) {
+ time_t secs;
+ pa_assert(tv);
+
+ secs = (time_t) (v/PA_USEC_PER_SEC);
+
+ if (PA_UNLIKELY(tv->tv_sec < secs))
+ goto underflow;
+
+ tv->tv_sec -= secs;
+ v -= (pa_usec_t) secs * PA_USEC_PER_SEC;
+
+ if (tv->tv_usec >= (suseconds_t) v)
+ tv->tv_usec -= (suseconds_t) v;
+ else {
+
+ if (PA_UNLIKELY(tv->tv_sec <= 0))
+ goto underflow;
+
+ tv->tv_sec --;
+ tv->tv_usec += (suseconds_t) (PA_USEC_PER_SEC - v);
+ }
+
+ return tv;
+
+underflow:
+ tv->tv_sec = 0;
+ tv->tv_usec = 0;
+ return tv;
+}
+
+struct timeval* pa_timeval_store(struct timeval *tv, pa_usec_t v) {
+ pa_assert(tv);
+
+ if (PA_UNLIKELY(v == PA_USEC_INVALID)) {
+ tv->tv_sec = PA_INT_TYPE_MAX(time_t);
+ tv->tv_usec = (suseconds_t) (PA_USEC_PER_SEC-1);
+
+ return tv;
+ }
+
+ tv->tv_sec = (time_t) (v / PA_USEC_PER_SEC);
+ tv->tv_usec = (suseconds_t) (v % PA_USEC_PER_SEC);
+
+ return tv;
+}
+
+pa_usec_t pa_timeval_load(const struct timeval *tv) {
+
+ if (PA_UNLIKELY(!tv))
+ return PA_USEC_INVALID;
+
+ return
+ (pa_usec_t) tv->tv_sec * PA_USEC_PER_SEC +
+ (pa_usec_t) tv->tv_usec;
+}