shared: Add timespec_from_proto helper function
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>
diff --git a/shared/timespec-util.h b/shared/timespec-util.h
index f9736c2..5184d28 100644
--- a/shared/timespec-util.h
+++ b/shared/timespec-util.h
@@ -181,6 +181,21 @@
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