#include <cmath>
#include <sys/time.h>
#include <QMetaType>
#include <chrono>

Include dependency graph for mythchrono.h:

This graph shows which files directly or indirectly include this file:

Namespaces
	std::chrono

	mpeg

	mpeg::chrono

	mpeg::chrono_literals

Typedefs
using	CHRONO_TYPE = std::chrono::seconds::rep

using	std::chrono::days = duration< CHRONO_TYPE, ratio< 86400 > >

using	std::chrono::weeks = duration< CHRONO_TYPE, ratio< 604800 > >

using	std::chrono::months = duration< CHRONO_TYPE, ratio< 2629746 > >

using	std::chrono::years = duration< CHRONO_TYPE, ratio< 31556952 > >

using	floatsecs = std::chrono::duration< double >

using	floatmsecs = std::chrono::duration< double, std::milli >

using	floatusecs = std::chrono::duration< double, std::micro >

using	mpeg::chrono::pts = std::chrono::duration< CHRONO_TYPE, std::ratio< 1, 90000 > >

using	SystemClock = std::chrono::system_clock

using	SystemTime = std::chrono::time_point< SystemClock >

Functions
	Q_DECLARE_METATYPE (std::chrono::seconds)

	Q_DECLARE_METATYPE (std::chrono::milliseconds)

	Q_DECLARE_METATYPE (std::chrono::microseconds)

constexpr mpeg::chrono::pts	mpeg::chrono_literals::operator""_pts (unsigned long long v)

template<typename T >
std::enable_if_t< std::is_floating_point_v< T >, std::chrono::seconds >	secondsFromFloat (T value)
	Helper function for convert a floating point number to a duration. More...

template<typename T >
std::enable_if_t< std::is_floating_point_v< T >, std::chrono::milliseconds >	millisecondsFromFloat (T value)
	Helper function for convert a floating point number to a duration. More...

template<typename T >
std::enable_if_t< std::is_floating_point_v< T >, std::chrono::microseconds >	microsecondsFromFloat (T value)
	Helper function for convert a floating point number to a duration. More...

static constexpr std::chrono::milliseconds	millisecondsFromParts (int hours, int minutes=0, int seconds=0, int milliseconds=0)
	Build a duration from separate minutes, seconds, etc. More...

template<typename T >
constexpr T	durationFromTimeval (timeval t)
	Convert a timeval to a duration. More...

template<typename T >
constexpr T	durationFromTimevalDelta (timeval a, timeval b)
	Compute delta between timevals and convert to a duration. More...

template<typename T >
constexpr T	durationFromTimespec (struct timespec time)
	Convert a timespec to a duration. More...

template<typename T >
T	nowAsDuration (bool adjustForTZ=false)
	Get the currenttime as a duration. More...

template<typename T >
static constexpr T	chronomult (T duration, double f)
	Multiply a duration by a float, returning a duration. More...

template<typename T >
static constexpr T	chronodivide (T duration, double f)
	Divide a duration by a float, returning a duration. More...

Typedef Documentation

◆ CHRONO_TYPE

using CHRONO_TYPE = std::chrono::seconds::rep

Definition at line 19 of file mythchrono.h.

◆ floatsecs

using floatsecs = std::chrono::duration<double>

Definition at line 39 of file mythchrono.h.

◆ floatmsecs

using floatmsecs = std::chrono::duration<double, std::milli>

Definition at line 40 of file mythchrono.h.

◆ floatusecs

using floatusecs = std::chrono::duration<double, std::micro>

Definition at line 41 of file mythchrono.h.

◆ SystemClock

using SystemClock = std::chrono::system_clock

Definition at line 66 of file mythchrono.h.

◆ SystemTime

using SystemTime = std::chrono::time_point<SystemClock>

Definition at line 67 of file mythchrono.h.

Function Documentation

◆ Q_DECLARE_METATYPE() [1/3]

Q_DECLARE_METATYPE ( std::chrono::seconds )

◆ Q_DECLARE_METATYPE() [2/3]

Q_DECLARE_METATYPE ( std::chrono::milliseconds )

◆ Q_DECLARE_METATYPE() [3/3]

Q_DECLARE_METATYPE ( std::chrono::microseconds )

◆ secondsFromFloat()

template<typename T >

std::enable_if_t<std::is_floating_point_v<T>, std::chrono::seconds> secondsFromFloat ( T value )

Helper function for convert a floating point number to a duration.

Parameters

value A floating point number that represents a time in seconds.

Returns: The same number of seconds as a std::chrono::seconds.

Definition at line 80 of file mythchrono.h.

Referenced by MythPlayer::CalcMaxFFTime(), MythPlayer::CalcRWTime(), CalcTrackLength(), MythCCExtractorPlayer::OnGotNewFrame(), AvFormatDecoder::OpenFile(), HLSRingBuffer::SeekInternal(), MythDVDPlayer::StillFrameCheck(), and DecoderBase::SyncPositionMap().

◆ millisecondsFromFloat()

template<typename T >

std::enable_if_t<std::is_floating_point_v<T>, std::chrono::milliseconds> millisecondsFromFloat ( T value )

Helper function for convert a floating point number to a duration.

Parameters

value A floating point number that represents a time in milliseconds.

Returns: The same number of seconds as a std::chrono::milliseconds.

Definition at line 91 of file mythchrono.h.

Referenced by AudioOutputBase::AddData(), MythPlayer::CalcMaxFFTime(), MythDVDPlayer::ChangeSpeed(), TV::DoSeek(), MythPlayer::FastForward(), DTVRecorder::FinishRecording(), commDetector2::frameToTimestamp(), commDetector2::frameToTimestampms(), AudioOutputCA::GetAudiotime(), MythDVDPlayer::GetMillisecondsPlayed(), MythPlayerCaptionsUI::GetStreamPos(), AvFormatDecoder::NormalizeVideoTimecode(), AvFormatDecoder::OpenFile(), AvFormatDecoder::ProcessAudioPacket(), AvFormatDecoder::ProcessVideoFrame(), MythPlayer::Rewind(), and Transcode::TranscodeFile().

◆ microsecondsFromFloat()

template<typename T >

std::enable_if_t<std::is_floating_point_v<T>, std::chrono::microseconds> microsecondsFromFloat ( T value )

Helper function for convert a floating point number to a duration.

Parameters

value A floating point number that represents a time in microseconds.

Returns: The same number of seconds as a std::chrono::microseconds.

Definition at line 102 of file mythchrono.h.

Referenced by MythPlayerAVSync::AVSync(), AvFormatDecoder::GetFrame(), MythDisplay::GetRefreshInterval(), MythPlayer::SetFrameInterval(), and MythPlayer::UpdateFFRewSkip().

◆ millisecondsFromParts()

static constexpr std::chrono::milliseconds millisecondsFromParts	(	int	hours,
		int	minutes = `0`,
		int	seconds = `0`,
		int	milliseconds = `0`
	)

staticconstexpr

Build a duration from separate minutes, seconds, etc.

Definition at line 109 of file mythchrono.h.

Referenced by LyricsData::setLyrics().

◆ durationFromTimeval()

template<typename T >

constexpr T durationFromTimeval ( timeval t )

constexpr

Convert a timeval to a duration.

Always specify the desired precision when calling this function. I.E. Always call in the form: durationFromTimeval<std::chrono::milliseconds>(t);

Timevals can support a precision as small as microseconds.

Definition at line 126 of file mythchrono.h.

◆ durationFromTimevalDelta()

template<typename T >

constexpr T durationFromTimevalDelta	(	timeval	a,
		timeval	b
	)

constexpr

Compute delta between timevals and convert to a duration.

Always specify the desired precision when calling this function. I.E. Always call in the form: durationFromTimevalDelta<std::chrono::milliseconds>(t);

Timevals can support a precision as small as microseconds.

Definition at line 143 of file mythchrono.h.

◆ durationFromTimespec()

template<typename T >

constexpr T durationFromTimespec ( struct timespec time )

constexpr

Convert a timespec to a duration.

Always specify the desired precision when calling this function. I.E. Always call in the form: durationFromTimespec<std::chrono::milliseconds>(t);

Timevals can support a precision as small as nanoseconds.

Definition at line 160 of file mythchrono.h.

◆ nowAsDuration()

template<typename T >

T nowAsDuration ( bool adjustForTZ = false )

Get the currenttime as a duration.

Always specify the desired precision when calling this function. I.E. Always call in the form: nowAsDuration<std::chrono::milliseconds>(t);

This function is based upon the gettimeoday function, so can return precisions as small as microseconds.

Definition at line 183 of file mythchrono.h.

◆ chronomult()

template<typename T >

static constexpr T chronomult	(	T	duration,
		double	f
	)

staticconstexpr

Multiply a duration by a float, returning a duration.

Definition at line 199 of file mythchrono.h.

Referenced by PeriodicHouseKeeperTask::CalculateWindow(), and MythPlayer::UpdateFFRewSkip().

◆ chronodivide()

template<typename T >

static constexpr T chronodivide	(	T	duration,
		double	f
	)

staticconstexpr

Divide a duration by a float, returning a duration.

Definition at line 205 of file mythchrono.h.

Namespaces

Typedefs

Functions

Typedef Documentation

◆ CHRONO_TYPE

◆ floatsecs

◆ floatmsecs

◆ floatusecs

◆ SystemClock

◆ SystemTime

Function Documentation

◆ Q_DECLARE_METATYPE() [1/3]

◆ Q_DECLARE_METATYPE() [2/3]

◆ Q_DECLARE_METATYPE() [3/3]

◆ secondsFromFloat()

◆ millisecondsFromFloat()

◆ microsecondsFromFloat()

◆ millisecondsFromParts()

◆ durationFromTimeval()

◆ durationFromTimevalDelta()

◆ durationFromTimespec()

◆ nowAsDuration()

◆ chronomult()

◆ chronodivide()