[vlc-devel] [PATCH 09/10] vlc_tick: add msftime_t to express 100ns time

[Steve Lhomme]

Such values currently have a better resolution than vlc_tick_t
Also provide conversion macros/functions to/from vlc_tick_t
---
 include/vlc_tick.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/include/vlc_tick.h b/include/vlc_tick.h
index 9e7f909e149..6953ba346d4 100644
--- a/include/vlc_tick.h
+++ b/include/vlc_tick.h
@@ -138,6 +138,24 @@ static inline int64_t ns_from_vlc_tick(vlc_tick_t vtk)
     return vtk * INT64_C(1000000000) / CLOCK_FREQ;
 }
 
+/**
+ * Typically Microsoft time with 100ns resolutions
+ */
+typedef int64_t msftime_t;
+#define MSFTIME_FROM_VLC_TICK(vtk)  ((msftime_t)((vtk) * (INT64_C(10000000) / CLOCK_FREQ)))
+#define VLC_TICK_FROM_MSFTIME(msft) ((vlc_tick_t)((msft) / (INT64_C(10000000) / CLOCK_FREQ)))
+#define MSFTIME_FROM_SEC(sec)       ((msftime_t)((sec) * INT64_C(10000000)))  /* seconds in msftime_t */
+
+static inline vlc_tick_t vlc_tick_from_msftime(msftime_t t)
+{
+    return t * CLOCK_FREQ / INT64_C(10000000);
+}
+
+static inline msftime_t msftime_from_vlc_tick(vlc_tick_t vtk)
+{
+    return vtk * INT64_C(10000000) / CLOCK_FREQ;
+}
+
 /*****************************************************************************
  * MSTRTIME_MAX_SIZE: maximum possible size of mstrtime
  *****************************************************************************
-- 
2.17.0