vlc_tick.h File Reference

Include dependency graph for vlc_tick.h:

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Data Structures
struct	date_t
	Timestamps without long-term rounding errors. More...

Macros
#define	VLC_TICK_FROM_SEC(sec)   (CLOCK_FREQ * (sec))
#define	SEC_FROM_VLC_TICK(vtk)   ((vtk) / CLOCK_FREQ)
#define	vlc_tick_from_sec(sec)
#define	VLC_TICK_FROM_MS(ms)   ((CLOCK_FREQ / INT64_C(1000)) * (ms))
#define	MS_FROM_VLC_TICK(vtk)   ((vtk) / (CLOCK_FREQ / INT64_C(1000)))
#define	VLC_TICK_FROM_US(us)   ((CLOCK_FREQ / INT64_C(1000000)) * (us))
#define	US_FROM_VLC_TICK(vtk)   ((vtk) / (CLOCK_FREQ / INT64_C(1000000)))
#define	VLC_TICK_FROM_NS(ns)   ((ns) * (CLOCK_FREQ / (INT64_C(1000000000))))
#define	NS_FROM_VLC_TICK(vtk)   ((vtk) / (CLOCK_FREQ / (INT64_C(1000000000))))
#define	MSFTIME_FROM_SEC(sec)   (INT64_C(10000000) * (sec)) /* seconds in msftime_t */
#define	MSFTIME_FROM_MS(sec)   (INT64_C(10000) * (sec)) /* milliseconds in msftime_t */
#define	VLC_TICK_FROM_MSFTIME(msft)   ((msft) * (CLOCK_FREQ / INT64_C(10000000))
#define	MSFTIME_FROM_VLC_TICK(vtk)   ((vtk) / (CLOCK_FREQ / INT64_C(10000000))
#define	vlc_tick_from_timeval(tv)   (vlc_tick_from_sec( (tv)->tv_sec ) + VLC_TICK_FROM_US( (tv)->tv_usec ))
#define	vlc_tick_from_timespec(tv)   (vlc_tick_from_sec( (tv)->tv_sec ) + VLC_TICK_FROM_NS( (tv)->tv_nsec ))
#define	MSTRTIME_MAX_SIZE   22

Typedefs
typedef int64_t	vlc_tick_t
	High precision date or time interval. More...
typedef vlc_tick_t	mtime_t
typedef int64_t	msftime_t

Functions
static vlc_tick_t	vlc_tick_from_seci (int64_t sec)
static vlc_tick_t	vlc_tick_from_secf (double secf)
static double	secf_from_vlc_tick (vlc_tick_t vtk)
static vlc_tick_t	vlc_tick_rate_duration (float frame_rate)
static vlc_tick_t	vlc_tick_from_samples (int64_t samples, int samp_rate)
static int64_t	samples_from_vlc_tick (vlc_tick_t t, int samp_rate)
static vlc_tick_t	vlc_tick_from_frac (uint64_t num, uint64_t den)
struct timespec	timespec_from_vlc_tick (vlc_tick_t date)
char *	secstotimestr (char *psz_buffer, int32_t secs)
	Convert seconds to a time in the format h:mm:ss. More...
void	date_Init (date_t *restrict date, uint32_t num, uint32_t den)
	Initializes a date_t. More...
void	date_Change (date_t *restrict date, uint32_t num, uint32_t den)
	Changes the rate of a date_t. More...
static void	date_Set (date_t *restrict date, vlc_tick_t value)
	Sets the exact timestamp of a date_t. More...
static vlc_tick_t	date_Get (const date_t *restrict date)
	Gets the current timestamp from a date_t. More...
vlc_tick_t	date_Increment (date_t *restrict date, uint32_t count)
	Increments a date. More...
vlc_tick_t	date_Decrement (date_t *restrict date, uint32_t count)
	Decrements a date. More...
uint64_t	NTPtime64 (void)

Macro Definition Documentation

MS_FROM_VLC_TICK

#define MS_FROM_VLC_TICK

(

vtk

)

((vtk) / (CLOCK_FREQ / INT64_C(1000)))

Referenced by EsOutDecodersStopBuffering(), EsOutFrameNext(), EsOutVaControlLocked(), net_Connect(), ThreadDisplayPreparePicture(), thumbnailer_RequestCommon(), vlc_atomic_timedwait(), vlc_player_SetCategoryDelay(), vlc_player_SetEsIdDelay(), vlc_timer_schedule(), and vlc_tls_ClientSessionCreate().

MSFTIME_FROM_MS

#define MSFTIME_FROM_MS

(

sec

)

(INT64_C(10000) * (sec)) /* milliseconds in msftime_t */

MSFTIME_FROM_SEC

#define MSFTIME_FROM_SEC

(

sec

)

(INT64_C(10000000) * (sec)) /* seconds in msftime_t */

MSFTIME_FROM_VLC_TICK

#define MSFTIME_FROM_VLC_TICK

(

vtk

)

((vtk) / (CLOCK_FREQ / INT64_C(10000000))

MSTRTIME_MAX_SIZE

#define MSTRTIME_MAX_SIZE   22

Referenced by input_title_GetName(), secstotimestr(), and vlc_player_osd_Position().

NS_FROM_VLC_TICK

#define NS_FROM_VLC_TICK

(

vtk

)

((vtk) / (CLOCK_FREQ / (INT64_C(1000000000))))

Referenced by timespec_from_vlc_tick().

SEC_FROM_VLC_TICK

#define SEC_FROM_VLC_TICK

(

vtk

)

((vtk) / CLOCK_FREQ)

Referenced by input_title_GetName(), StartTitle(), and vlc_player_osd_Position().

US_FROM_VLC_TICK

#define US_FROM_VLC_TICK

(

vtk

)

((vtk) / (CLOCK_FREQ / INT64_C(1000000)))

Referenced by vlm_ControlMediaInstanceGets(), and vlm_ControlMediaInstanceGetTimePosition().

VLC_TICK_FROM_MS

#define VLC_TICK_FROM_MS

(

ms

)

((CLOCK_FREQ / INT64_C(1000)) * (ms))

Referenced by EsOutDecodersStopBuffering(), EsOutDrainDecoder(), EsOutFrameNext(), EsOutVaControlLocked(), FileControl(), input_clock_Update(), input_preparser_New(), LiveControl(), MainLoop(), mdate_multimedia(), mdate_tick(), net_Connect(), OSDWidget(), QueueTake(), sout_MuxSendBuffer(), task_Create(), Thread(), ThreadDisplayPreparePicture(), vlc_atomic_timedwait(), vlc_demux_chained_Thread(), vlc_player_input_New(), vlc_tls_ClientSessionCreate(), vout_Create(), vout_DisplayTitle(), and VoutSaveSnapshot().

VLC_TICK_FROM_MSFTIME

#define VLC_TICK_FROM_MSFTIME

(

msft

)

((msft) * (CLOCK_FREQ / INT64_C(10000000))

Referenced by mdate_wall().

VLC_TICK_FROM_NS

#define VLC_TICK_FROM_NS

(

ns

)

((ns) * (CLOCK_FREQ / (INT64_C(1000000000))))

Referenced by vlc_tick_now().

VLC_TICK_FROM_SEC

#define VLC_TICK_FROM_SEC

(

sec

)

(CLOCK_FREQ * (sec))

Referenced by beginning_of_media(), Control(), end_of_media(), httpd_ClientInit(), input_rate_Add(), vlc_player_SendSmpteTimerSourceUpdates(), vout_OSDEpg(), vout_OSDMessageVa(), vout_SetInterlacingState(), and VoutSnapshotPip().

vlc_tick_from_sec

#define vlc_tick_from_sec

(

sec

)

Value:

_Generic((sec), \
        double:  vlc_tick_from_secf(sec), \
        float:   vlc_tick_from_secf(sec), \
        default: vlc_tick_from_seci(sec) )

Referenced by ControlNav(), vlc_tick_from_frac(), and vlc_tick_now().

vlc_tick_from_timespec

#define vlc_tick_from_timespec

(

tv

)

(vlc_tick_from_sec( (tv)->tv_sec ) + VLC_TICK_FROM_NS( (tv)->tv_nsec ))

Referenced by vlc_tick_now().

vlc_tick_from_timeval

#define vlc_tick_from_timeval

(

tv

)

(vlc_tick_from_sec( (tv)->tv_sec ) + VLC_TICK_FROM_US( (tv)->tv_usec ))

VLC_TICK_FROM_US

#define VLC_TICK_FROM_US

(

us

)

((CLOCK_FREQ / INT64_C(1000000)) * (us))

Referenced by vlm_ControlMediaInstanceSetTimePosition().

Typedef Documentation

msftime_t

typedef int64_t msftime_t

mtime_t

typedef vlc_tick_t mtime_t

vlc_tick_t

typedef int64_t vlc_tick_t

High precision date or time interval.

Store a high precision date or time interval. The maximum precision is the microsecond, and a 64 bits integer is used to avoid overflows (maximum time interval is then 292271 years, which should be long enough for any video). Dates are stored as microseconds since a common date (usually the epoch). Note that date and time intervals can be manipulated using regular arithmetic operators, and that no special functions are required.

Function Documentation

NTPtime64()

uint64_t NTPtime64

(

void

)

Returns

NTP 64-bits timestamp in host byte order.

References TIME_UTC, timespec_get(), timespec::tv_nsec, and timespec::tv_sec.

Referenced by date_Get(), vlc_rand_bytes(), and vlc_sdp_Start().

samples_from_vlc_tick()

static int64_t samples_from_vlc_tick ( vlc_tick_t  t, int  samp_rate  )

inlinestatic

References CLOCK_FREQ.

Referenced by aout_DecSilence().

secf_from_vlc_tick()

static double secf_from_vlc_tick ( vlc_tick_t  vtk )

inlinestatic

References CLOCK_FREQ.

secstotimestr()

char* secstotimestr	(	char *	psz_buffer,
		int32_t	secs
	)

Convert seconds to a time in the format h:mm:ss.

This function is provided for any interface function which need to print a time string in the format h:mm:ss date.

Parameters

secs	the date to be converted
psz_buffer	should be a buffer at least MSTRTIME_MAX_SIZE characters

Returns

psz_buffer is returned so this can be used as printf parameter.

References MSTRTIME_MAX_SIZE, secstotimestr(), and unlikely.

Referenced by input_title_GetName(), secstotimestr(), and vlc_player_osd_Position().

timespec_from_vlc_tick()

struct timespec timespec_from_vlc_tick

(

vlc_tick_t

date

)

References CLOCK_FREQ, lldiv(), and NS_FROM_VLC_TICK.

Referenced by vlc_atomic_timedwait(), vlc_tick_sleep(), and vlc_tick_wait().

vlc_tick_from_frac()

static vlc_tick_t vlc_tick_from_frac ( uint64_t  num, uint64_t  den  )

inlinestatic

References lldiv(), lldiv_t::quot, lldiv_t::rem, vlc_tick_from_samples(), and vlc_tick_from_sec.

Referenced by mdate_perf().

vlc_tick_from_samples()

static vlc_tick_t vlc_tick_from_samples ( int64_t  samples, int  samp_rate  )

inlinestatic

References CLOCK_FREQ.

Referenced by aout_DecPlay(), RunThread(), vlc_player_input_New(), vlc_tick_from_frac(), and vlc_tick_now().

vlc_tick_from_secf()

static vlc_tick_t vlc_tick_from_secf ( double  secf )

inlinestatic

References CLOCK_FREQ.

vlc_tick_from_seci()

static vlc_tick_t vlc_tick_from_seci ( int64_t  sec )

inlinestatic

References CLOCK_FREQ.

vlc_tick_rate_duration()

static vlc_tick_t vlc_tick_rate_duration ( float  frame_rate )

inlinestatic

References CLOCK_FREQ.