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shared: Add timespec_from_proto helper function

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Add helper function to convert tv_sec_hi, tv_sec_lo, tv_nsec triplets,
used for sending high-resolution timestamp data over the wayland
protocol, to struct timespec values. Replace existing conversion code
with the helper function.

Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Alexandros Frantzis 2017-12-13 13:27:53 +02:00 • committed by Pekka Paalanen
parent c83fdaa555
commit 787fa611de
4 changed files with 34 additions and 16 deletions
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9
clients/presentation-shm.c
View file

@ -39,6 +39,7 @@
#include <wayland-client.h>
#include "shared/helpers.h"
#include "shared/zalloc.h"
#include "shared/timespec-util.h"
#include "shared/os-compatibility.h"
#include "presentation-time-client-protocol.h"
@ -383,14 +384,6 @@ timespec_to_ms(const struct timespec *ts)
return (uint32_t)ts->tv_sec * 1000 + ts->tv_nsec / 1000000;
}
static void
timespec_from_proto(struct timespec *tm, uint32_t tv_sec_hi,
uint32_t tv_sec_lo, uint32_t tv_nsec)
{
tm->tv_sec = ((uint64_t)tv_sec_hi << 32) + tv_sec_lo;
tm->tv_nsec = tv_nsec;
}
static int
timespec_diff_to_usec(const struct timespec *a, const struct timespec *b)
{

15
shared/timespec-util.h
View file

@ -181,6 +181,21 @@ timespec_from_msec(struct timespec *a, int64_t b)
timespec_from_nsec(a, b * 1000000);
}
/* Convert protocol data to timespec
*
* \param a[out] timespec
* \param tv_sec_hi the high bytes of seconds part
* \param tv_sec_lo the low bytes of seconds part
* \param tv_nsec the nanoseconds part
*/
static inline void
timespec_from_proto(struct timespec *a, uint32_t tv_sec_hi,
uint32_t tv_sec_lo, uint32_t tv_nsec)
{
a->tv_sec = ((uint64_t)tv_sec_hi << 32) + tv_sec_lo;
a->tv_nsec = tv_nsec;
}
/* Check if a timespec is zero
*
* \param a timespec

9
tests/presentation-test.c
View file

@ -34,6 +34,7 @@
#include "shared/helpers.h"
#include "shared/xalloc.h"
#include "shared/timespec-util.h"
#include "weston-test-client-helper.h"
#include "presentation-time-client-protocol.h"
@ -85,14 +86,6 @@ struct feedback {
uint32_t flags;
};
static void
timespec_from_proto(struct timespec *tm, uint32_t tv_sec_hi,
uint32_t tv_sec_lo, uint32_t tv_nsec)
{
tm->tv_sec = ((uint64_t)tv_sec_hi << 32) + tv_sec_lo;
tm->tv_nsec = tv_nsec;
}
static void
feedback_sync_output(void *data,
struct wp_presentation_feedback *presentation_feedback,

17
tests/timespec-test.c
View file

@ -238,6 +238,23 @@ ZUC_TEST(timespec_test, timespec_from_msec)
ZUC_ASSERT_EQ(1000000, a.tv_nsec);
}
ZUC_TEST(timespec_test, timespec_from_proto)
{
struct timespec a;
timespec_from_proto(&a, 0, 0, 0);
ZUC_ASSERT_EQ(0, a.tv_sec);
ZUC_ASSERT_EQ(0, a.tv_nsec);
timespec_from_proto(&a, 0, 1234, 9999);
ZUC_ASSERT_EQ(1234, a.tv_sec);
ZUC_ASSERT_EQ(9999, a.tv_nsec);
timespec_from_proto(&a, 0x1234, 0x5678, 1);
ZUC_ASSERT_EQ((time_t)0x0000123400005678LL, a.tv_sec);
ZUC_ASSERT_EQ(1, a.tv_nsec);
}
ZUC_TEST(timespec_test, timespec_is_zero)
{
struct timespec zero = { 0 };