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vlc_tick: add helper macros to convert seconds to/from vlc_tick_t

This commit is contained in:
Steve Lhomme 2018-06-22 18:01:09 +02:00
parent 01737e895f
commit 58a6a21271
1 changed files with 53 additions and 0 deletions
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53
include/vlc_tick.h
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@ -45,6 +45,59 @@
typedef int64_t vlc_tick_t;
typedef vlc_tick_t mtime_t; /* deprecated, use vlc_tick_t */
/*
* vlc_tick_t <> seconds (sec) conversions
*/
#define VLC_TICK_FROM_SEC(sec) (CLOCK_FREQ * (sec))
#define SEC_FROM_VLC_TICK(vtk) ((vtk) / CLOCK_FREQ)
#ifdef __cplusplus
static inline vlc_tick_t vlc_tick_from_sec(int64_t sec)
{
return CLOCK_FREQ * sec;
}
static inline vlc_tick_t vlc_tick_from_sec(int sec)
{
return CLOCK_FREQ * sec;
}
static inline vlc_tick_t vlc_tick_from_sec(long sec)
{
return CLOCK_FREQ * sec;
}
static inline vlc_tick_t vlc_tick_from_sec(uint32_t sec)
{
return CLOCK_FREQ * sec;
}
/* seconds in floating point */
static inline vlc_tick_t vlc_tick_from_sec(double secf)
{
return (vlc_tick_t)(CLOCK_FREQ * secf); /* TODO use llround ? */
}
#else /* !__cplusplus */
static inline vlc_tick_t vlc_tick_from_seci(int64_t sec)
{
return CLOCK_FREQ * sec;
}
/* seconds in floating point */
static inline vlc_tick_t vlc_tick_from_secf(double secf)
{
return (vlc_tick_t)(CLOCK_FREQ * secf); /* TODO use llround ? */
}
#define vlc_tick_from_sec(sec) _Generic((sec), \
double: vlc_tick_from_secf(sec), \
float: vlc_tick_from_secf(sec), \
default: vlc_tick_from_seci(sec) )
#endif /* !__cplusplus */
/* seconds in floating point from vlc_tick_t */
static inline double secf_from_vlc_tick(vlc_tick_t vtk)
{
return (double)vtk / (double)CLOCK_FREQ;
}
/*****************************************************************************
* MSTRTIME_MAX_SIZE: maximum possible size of mstrtime
*****************************************************************************