A QElapsedTimer based timer to replace use of QTime as a timer. More...

#include <mythtimer.h>

Public Types
enum	StartState { kStartRunning, kStartInactive }

Public Member Functions
	MythTimer (StartState state=kStartInactive)
	Creates a timer. More...

void	start (void)
	starts measuring elapsed time. More...

std::chrono::milliseconds	restart (void)
	Returns milliseconds elapsed since last start() or restart() and resets the count. More...

void	stop (void)
	Stops timer, next call to isRunning() will return false and any calls to elapsed() or restart() will return 0 until after timer is restarted by a call to start() or restart(). More...

void	addMSecs (std::chrono::milliseconds ms)
	Adds an offset to the last call to start() or restart(). More...

std::chrono::milliseconds	elapsed (void)
	Returns milliseconds elapsed since last start() or restart() More...

std::chrono::nanoseconds	nsecsElapsed (void) const
	Returns nanoseconds elapsed since last start() or restart() More...

bool	isRunning (void) const
	Returns true if start() or restart() has been called at least once since construction and since any call to stop(). More...

Private Attributes
QElapsedTimer	m_timer

std::chrono::milliseconds	m_offset {0ms}

Detailed Description

A QElapsedTimer based timer to replace use of QTime as a timer.

This class is not thread-safe.

Definition at line 13 of file mythtimer.h.

Member Enumeration Documentation

◆ StartState

enum MythTimer::StartState

Enumerator
kStartRunning
kStartInactive

Definition at line 16 of file mythtimer.h.

Constructor & Destructor Documentation

◆ MythTimer()

MythTimer::MythTimer ( StartState state = kStartInactive )

explicit

Creates a timer.

If a start state of kStartRunning is passed in the timer is started immediately as if start() had been called.

Definition at line 38 of file mythtimer.cpp.

Member Function Documentation

◆ start()

void MythTimer::start ( void )

starts measuring elapsed time.

Definition at line 47 of file mythtimer.cpp.

Referenced by DTVRecorder::BufferedWrite(), GUIStartup::Close(), DVBStreamHandler::CycleFiltersByPriority(), MythContextPrivate::DefaultUPnP(), ThreadedFileWriter::DiskLoop(), TV::DoSeek(), elapsed(), FreeSpaceUpdater::FreeSpaceUpdater(), AnalogSignalMonitor::handleHDPVR(), MythTimer(), MythUITextEdit::MythUITextEdit(), AudioOutputOSS::OpenDevice(), MythFileBuffer::OpenFile(), MythPlayer::OpenFile(), PlayerContext::PlayerContext(), DeviceReadBuffer::Poll(), SatIP::probeDevices(), VBox::probeDevices(), DarwinFirewireDevice::ProcessNoDataMessage(), MPEGStreamData::ProcessPAT(), DTVRecorder::ProcessTSPacket(), RemoteFile::Read(), BufferedSocketDeviceRequest::ReadBlock(), ZMClient::readData(), MythMediaBuffer::ReadDirect(), BufferedSocketDevice::ReadLine(), BufferedSocketDeviceRequest::ReadLine(), MythSocket::ReadStringListReal(), MythCommFlagPlayer::RebuildSeekTable(), DeviceReadBuffer::ReportStats(), restart(), MpegRecorder::run(), ExternalStreamHandler::run(), MythCCExtractorPlayer::run(), MythMediaBuffer::run(), FirewireSignalMonitor::RunTableMonitor(), RecorderBase::SavePositionMap(), DecoderBase::SavePositionMapDelta(), DeviceReadBuffer::Setup(), LinuxFirewireDevice::SignalReset(), V4L2encSignalMonitor::StableResolution(), HTTPLiveStream::StartStream(), HTTPLiveStream::StopStream(), TV::TV(), TV::UpdateOSDSignal(), FirewireSignalMonitor::UpdateValues(), MythContextPrivate::UPnPautoconf(), MythMediaBuffer::WaitForAvail(), TVRec::WaitForEventThreadSleep(), MythMediaBuffer::WaitForReadsAllowed(), DeviceReadBuffer::WaitForUsed(), and MythSocket::WriteStringListReal().

◆ restart()

std::chrono::milliseconds MythTimer::restart ( void )

Returns milliseconds elapsed since last start() or restart() and resets the count.

Note: If timer had not been started before this is called, this returns zero.; If addMSecs() has been called and the total offset applied is negative then this can return a negative number.

Definition at line 62 of file mythtimer.cpp.

Referenced by DTVRecorder::BufferedWrite(), MythDVDPlayer::ChangeSpeed(), RecorderBase::CheckForRingBufferSwitch(), ThreadedFileWriter::DiskLoop(), DTVRecorder::FindH2645Keyframes(), RemoteEncoder::GetFramesWritten(), RemoteFile::GetRealFileSize(), FreeSpaceUpdater::KeepRunning(), MythUITextEdit::keyPressEvent(), MythCommFlagPlayer::RebuildSeekTable(), ExternalStreamHandler::run(), MythCCExtractorPlayer::run(), MythDVDPlayer::SetStillFrameTimeout(), and MythSocket::WriteStringListReal().

◆ stop()

void MythTimer::stop ( void )

Stops timer, next call to isRunning() will return false and any calls to elapsed() or restart() will return 0 until after timer is restarted by a call to start() or restart().

Definition at line 78 of file mythtimer.cpp.

Referenced by GUIStartup::Close(), DTVRecorder::FindH2645Keyframes(), AnalogSignalMonitor::handleHDPVR(), MythTimer(), ExternalStreamHandler::run(), and V4L2encSignalMonitor::StableResolution().

◆ addMSecs()

void MythTimer::addMSecs ( std::chrono::milliseconds ms )

Adds an offset to the last call to start() or restart().

This offset is removed if start() or restart() is called again. The offset may be positive or negative. This may be called multiple times to accrete various offsets.

Definition at line 146 of file mythtimer.cpp.

Referenced by MythDVDPlayer::ChangeSpeed(), GUIStartup::Close(), PlayerContext::PlayerContext(), and DTVRecorder::ProcessTSPacket().

◆ elapsed()

std::chrono::milliseconds MythTimer::elapsed ( void )

Returns milliseconds elapsed since last start() or restart()

Note: If timer had not been started before this is called, this returns zero.; If addMSecs() has been called and the total offset applied is negative then this can return a negative number.

Definition at line 91 of file mythtimer.cpp.

Referenced by TV::ActiveHandleAction(), HEVCParser::addBytes(), MythDVDPlayer::ChangeSpeed(), PortChecker::checkPort(), GUIStartup::Close(), DVBStreamHandler::CycleFiltersByPriority(), MythContextPrivate::DefaultUPnP(), ThreadedFileWriter::DiskLoop(), TV::DoSeek(), DTVRecorder::FindH2645Keyframes(), RemoteEncoder::GetFramesWritten(), MythDVDPlayer::GetMillisecondsPlayed(), RemoteFile::GetRealFileSize(), AnalogSignalMonitor::handleHDPVR(), FirewireSignalMonitor::HandlePAT(), AudioOutputOSS::OpenDevice(), MythFileBuffer::OpenFile(), MythPlayer::OpenFile(), DeviceReadBuffer::Poll(), SatIP::probeDevices(), VBox::probeDevices(), DarwinFirewireDevice::ProcessNoDataMessage(), MPEGStreamData::ProcessPAT(), DTVRecorder::ProcessTSPacket(), ExternalStreamHandler::ProcessVer1(), ExternalStreamHandler::ProcessVer2(), progress_string(), MythUITextEdit::Pulse(), RemoteFile::Read(), BufferedSocketDeviceRequest::ReadBlock(), ZMClient::readData(), MythMediaBuffer::ReadDirect(), BufferedSocketDevice::ReadLine(), BufferedSocketDeviceRequest::ReadLine(), MythMediaBuffer::ReadPriv(), MythSocket::ReadStringListReal(), MythCommFlagPlayer::RebuildSeekTable(), DeviceReadBuffer::ReportStats(), MpegRecorder::run(), LinuxFirewireDevice::run(), ExternalStreamHandler::run(), MythCCExtractorPlayer::run(), MythMediaBuffer::run(), FreeSpaceUpdater::run(), RecorderBase::SavePositionMap(), DecoderBase::SavePositionMapDelta(), AvFormatDecoder::SeekReset(), V4L2encSignalMonitor::StableResolution(), HTTPLiveStream::StartStream(), MythDVDPlayer::StillFrameCheck(), HTTPLiveStream::StopStream(), StreamHandler::UpdateFiltersFromStreamData(), TV::UpdateOSDSignal(), GUIStartup::updateProgress(), FirewireSignalMonitor::UpdateValues(), MythContextPrivate::UPnPautoconf(), MythMediaBuffer::WaitForAvail(), TVRec::WaitForEventThreadSleep(), MythMediaBuffer::WaitForReadsAllowed(), DeviceReadBuffer::WaitForUsed(), and MythSocket::WriteStringListReal().

◆ nsecsElapsed()

std::chrono::nanoseconds MythTimer::nsecsElapsed ( void ) const

Returns nanoseconds elapsed since last start() or restart()

Note: If timer had not been started before this is called, this returns zero.; If addMSecs() has been called and the total offset applied is negative then this can return a negative number.

Definition at line 119 of file mythtimer.cpp.

◆ isRunning()

bool MythTimer::isRunning ( void ) const

Returns true if start() or restart() has been called at least once since construction and since any call to stop().

Definition at line 135 of file mythtimer.cpp.

Referenced by DTVRecorder::FindH2645Keyframes(), RemoteEncoder::GetFramesWritten(), RemoteFile::GetRealFileSize(), AnalogSignalMonitor::handleHDPVR(), ExternalStreamHandler::run(), RecorderBase::SavePositionMap(), V4L2encSignalMonitor::StableResolution(), StreamHandler::UpdateFiltersFromStreamData(), and TV::UpdateOSDSignal().

Member Data Documentation

◆ m_timer

QElapsedTimer MythTimer::m_timer

private

Definition at line 34 of file mythtimer.h.

Referenced by elapsed(), isRunning(), nsecsElapsed(), restart(), start(), and stop().

◆ m_offset

std::chrono::milliseconds MythTimer::m_offset {0ms}