#include <libmythtv/io/mythmediabuffer.h>

Inheritance diagram for MythMediaBuffer:

Collaboration diagram for MythMediaBuffer:

Public Member Functions
	~MythMediaBuffer () override=0
	Deletes. More...

MythBufferType	GetType () const

void	SetOldFile (bool Old)
	Tell RingBuffer if this is an old file or not. More...

void	UpdateRawBitrate (uint RawBitrate)
	Set the raw bit rate, to allow RingBuffer adjust effective bitrate. More...

void	UpdatePlaySpeed (float PlaySpeed)
	Set the play speed, to allow RingBuffer adjust effective bitrate. More...

void	EnableBitrateMonitor (bool Enable)

void	SetBufferSizeFactors (bool EstBitrate, bool Matroska)
	Tells RingBuffer that the raw bitrate may be inaccurate and the underlying container is matroska, both of which may require a larger buffer size. More...

void	SetWaitForWrite (void)

QString	GetSafeFilename (void)

QString	GetFilename (void) const

QString	GetSubtitleFilename (void) const

QString	GetLastError (void) const

bool	GetCommsError (void) const

void	ResetCommsError (void)

bool	GetStopReads (void) const

QString	GetDecoderRate (void)

QString	GetStorageRate (void)

QString	GetAvailableBuffer (void)

uint	GetBufferSize (void) const

bool	IsNearEnd (double Framerate, uint Frames) const

long long	GetWritePosition (void) const
	Returns how far into a ThreadedFileWriter file we have written. More...

long long	GetRealFileSize (void) const

bool	IsDisc (void) const

bool	IsDVD (void) const

bool	IsBD (void) const

const MythDVDBuffer *	DVD (void) const

MythDVDBuffer *	DVD (void)

const MythBDBuffer *	BD (void) const

MythBDBuffer *	BD (void)

int	Read (void *Buffer, int Count)
	This is the public method for reading from a file, it calls the appropriate read method if the file is remote or buffered, or a BD/DVD. More...

int	Peek (void *Buffer, int Count)

int	Peek (std::vector< char > &Buffer)

void	Reset (bool Full=false, bool ToAdjust=false, bool ResetInternal=false)
	Resets the read-ahead thread and our position in the file. More...

void	Pause (void)
	Pauses the read-ahead thread. Calls StopReads(void). More...

void	Unpause (void)
	Unpauses the read-ahead thread. Calls StartReads(void). More...

void	WaitForPause (void)
	Waits for Pause(void) to take effect. More...

void	Start (void)
	Starts the read-ahead thread. More...

void	StopReads (void)

void	StartReads (void)

long long	Seek (long long Position, int Whence, bool HasLock=false)

long long	SetAdjustFilesize (void)

int	GetReadBufAvail (void) const
	Returns number of bytes available for reading from buffer. More...

bool	SetReadInternalMode (bool Mode)

bool	IsReadInternalMode (void) const

bool	LiveMode (void) const
	Returns true if this RingBuffer has been assigned a LiveTVChain. More...

void	SetLiveMode (LiveTVChain *Chain)
	Assigns a LiveTVChain to this RingBuffer. More...

void	IgnoreLiveEOF (bool Ignore)
	Tells RingBuffer whether to ignore the end-of-file. More...

int	Write (const void *Buffer, uint Count)
	Writes buffer to ThreadedFileWriter::Write(const void*,uint) More...

bool	IsIOBound (void) const

void	WriterFlush (void)
	Calls ThreadedFileWriter::Flush(void) More...

void	Sync (void)
	Calls ThreadedFileWriter::Sync(void) More...

long long	WriterSeek (long long Position, int Whence, bool HasLock=false)
	Calls ThreadedFileWriter::Seek(long long,int). More...

bool	WriterSetBlocking (bool Lock=true)
	Calls ThreadedFileWriter::SetBlocking(bool) More...

virtual long long	GetReadPosition (void) const =0

virtual bool	IsOpen (void) const =0

virtual bool	IsStreamed (void)

virtual bool	IsSeekingAllowed (void)

virtual bool	IsBookmarkAllowed (void)

virtual int	BestBufferSize (void)

virtual bool	StartFromBeginning (void)

virtual void	IgnoreWaitStates (bool)

virtual bool	IsInMenu (void) const

virtual bool	IsInStillFrame (void) const

virtual bool	IsInDiscMenuOrStillFrame (void) const

virtual bool	HandleAction (const QStringList &, mpeg::chrono::pts)

virtual bool	OpenFile (const QString &Filename, std::chrono::milliseconds Retry=kDefaultOpenTimeout)=0

virtual bool	ReOpen (const QString &="")

Static Public Member Functions
static MythMediaBuffer *	Create (const QString &Filename, bool Write, bool UseReadAhead=true, std::chrono::milliseconds Timeout=kDefaultOpenTimeout, bool StreamOnly=false)
	Creates a RingBuffer instance. More...

static QString	BitrateToString (uint64_t Rate, bool Hz=false)

static void	AVFormatInitNetwork (void)

Static Public Attributes
static constexpr std::chrono::milliseconds	kDefaultOpenTimeout { 2s }

static constexpr std::chrono::milliseconds	kLiveTVOpenTimeout { 10s }

Protected Member Functions
	MythMediaBuffer (MythBufferType Type)

void	run (void) override
	Runs the Qt event loop unless we have a QRunnable, in which case we run the runnable run instead. More...

void	CreateReadAheadBuffer (void)

void	CalcReadAheadThresh (void)
	Calculates m_fillMin, m_fillThreshold, and m_readBlockSize from the estimated effective bitrate of the stream. More...

bool	PauseAndWait (void)

int	ReadPriv (void *Buffer, int Count, bool Peek)
	When possible reads from the read-ahead buffer, otherwise reads directly from the device. More...

int	ReadDirect (void *Buffer, int Count, bool Peek)

bool	WaitForReadsAllowed (void)

int	WaitForAvail (int Count, std::chrono::milliseconds Timeout)

int	ReadBufFree (void) const
	Returns number of bytes available for reading into buffer. More...

int	ReadBufAvail (void) const
	Returns number of bytes available for reading from buffer. More...

void	ResetReadAhead (long long NewInternal)
	Restart the read-ahead thread at the 'newinternal' position. More...

void	KillReadAheadThread (void)
	Stops the read-ahead thread, and waits for it to stop. More...

uint64_t	UpdateDecoderRate (uint64_t Latest=0)

uint64_t	UpdateStorageRate (uint64_t Latest=0)

virtual int	SafeRead (void *Buffer, uint Size)=0

virtual long long	GetRealFileSizeInternal (void) const

virtual long long	SeekInternal (long long Position, int Whence)=0

Protected Member Functions inherited from MThread
int	exec (void)
	Enters the qt event loop. call exit or quit to exit thread. More...

	MThread (const QString &objectName)
	Standard constructor. More...

	MThread (const QString &objectName, QRunnable *runnable)
	Use this constructor if you want the default run() method to run the QRunnable's run() method instead of entering the Qt event loop. More...

virtual	~MThread ()

	MThread (const MThread &)=delete

MThread &	operator= (const MThread &)=delete

void	RunProlog (void)
	Sets up a thread, call this if you reimplement run(). More...

void	RunEpilog (void)
	Cleans up a thread's resources, call this if you reimplement run(). More...

QThread *	qthread (void)
	Returns the thread, this will always return the same pointer no matter how often you restart the thread. More...

void	setObjectName (const QString &name)

QString	objectName (void) const

void	setPriority (QThread::Priority priority)

QThread::Priority	priority (void) const

bool	isFinished (void) const

bool	isRunning (void) const

void	setStackSize (uint stackSize)

uint	stackSize (void) const

void	exit (int retcode=0)
	Use this to exit from the thread if you are using a Qt event loop. More...

void	start (QThread::Priority p=QThread::InheritPriority)
	Tell MThread to start running the thread in the near future. More...

void	terminate (void)
	Kill a thread unsafely. More...

void	quit (void)
	calls exit(0) More...

bool	wait (std::chrono::milliseconds time=std::chrono::milliseconds::max())
	Wait for the MThread to exit, with a maximum timeout. More...

Protected Attributes
MythBufferType	m_type

QReadWriteLock	m_posLock

long long	m_readPos { 0 }

long long	m_writePos { 0 }

long long	m_internalReadPos { 0 }

long long	m_ignoreReadPos { -1 }

QReadWriteLock	m_rbrLock

int	m_rbrPos { 0 }

QReadWriteLock	m_rbwLock

int	m_rbwPos { 0 }

volatile bool	m_stopReads {false}

QString	m_safeFilename

QReadWriteLock	m_rwLock

QString	m_filename

QString	m_subtitleFilename

QString	m_lastError

ThreadedFileWriter *	m_tfw { nullptr }

int	m_fd2 { -1 }

bool	m_writeMode { false }

RemoteFile *	m_remotefile { nullptr }

uint	m_bufferSize { BUFFER_SIZE_MINIMUM }

bool	m_lowBuffers { false }

bool	m_fileIsMatroska { false }

bool	m_unknownBitrate { false }

bool	m_startReadAhead { false }

char *	m_readAheadBuffer { nullptr }

bool	m_readAheadRunning { false }

bool	m_reallyRunning { false }

bool	m_requestPause { false }

bool	m_paused { false }

bool	m_ateof { false }

bool	m_waitForWrite { false }

bool	m_beingWritten { false }

bool	m_readsAllowed { false }

bool	m_readsDesired { false }

volatile bool	m_recentSeek { true }

bool	m_setSwitchToNext { false }

uint	m_rawBitrate { 8000 }

float	m_playSpeed { 1.0F }

int	m_fillThreshold { 65536 }

int	m_fillMin { -1 }

int	m_readBlockSize { DEFAULT_CHUNK_SIZE}

int	m_wantToRead { 0 }

int	m_numFailures { 0 }

bool	m_commsError { false }

bool	m_oldfile { false }

LiveTVChain *	m_liveTVChain { nullptr }

bool	m_ignoreLiveEOF { false }

long long	m_readAdjust { 0 }

int	m_readOffset { 0 }

bool	m_readInternalMode { false }

bool	m_bitrateMonitorEnabled { false }

QMutex	m_decoderReadLock

QMap< std::chrono::milliseconds, uint64_t >	m_decoderReads

QMutex	m_storageReadLock

QMap< std::chrono::milliseconds, uint64_t >	m_storageReads

QWaitCondition	m_generalWait
	Condition to signal that the read ahead thread is running. More...

Protected Attributes inherited from MThread
MThreadInternal *	m_thread {nullptr}

QRunnable *	m_runnable {nullptr}

bool	m_prologExecuted {true}

bool	m_epilogExecuted {true}

Private Attributes
bool	m_bitrateInitialized { false }

Friends
class	MythInteractiveBuffer

Additional Inherited Members
Static Protected Member Functions inherited from MThread
static void	setTerminationEnabled (bool enabled=true)

static void	usleep (std::chrono::microseconds time)

template<typename R , typename P >
static std::enable_if_t< std::chrono::treat_as_floating_point< R >::value, void >	usleep (std::chrono::duration< R, P > time)

static void	ThreadSetup (const QString &name)
	This is to be called on startup in those few threads that haven't been ported to MThread. More...

static void	ThreadCleanup (void)
	This is to be called on exit in those few threads that haven't been ported to MThread. More...

static void	Cleanup (void)
	This will print out all the running threads, call exit(1) on each and then wait up to 5 seconds total for all the threads to exit. More...

static void	GetAllThreadNames (QStringList &list)

static void	GetAllRunningThreadNames (QStringList &list)

Detailed Description

Definition at line 59 of file mythmediabuffer.h.

Constructor & Destructor Documentation

◆ ~MythMediaBuffer()

MythMediaBuffer::~MythMediaBuffer ( )

overridepure virtual

Deletes.

Note: Classes inheriting from RingBuffer must implement a destructor that calls KillReadAheadThread(). We can not do that here because this would leave pure virtual functions without implementations during destruction.

Definition at line 219 of file mythmediabuffer.cpp.

◆ MythMediaBuffer()

MythMediaBuffer::MythMediaBuffer ( MythBufferType Type )

explicitprotected

Definition at line 198 of file mythmediabuffer.cpp.

Member Function Documentation

◆ Create()

MythMediaBuffer * MythMediaBuffer::Create	(	const QString &	Filename,
		bool	Write,
		bool	UseReadAhead = `true`,
		std::chrono::milliseconds	Timeout = `kDefaultOpenTimeout`,
		bool	StreamOnly = `false`
	)

static

Creates a RingBuffer instance.

You can explicitly disable the readahead thread by setting readahead to false or by just not calling Start(void).

Parameters

Filename	Name of file to read or write.
Write	If true an encapsulated writer is created
UseReadAhead	If false a call to Start(void) will not a pre-buffering thread, otherwise Start(void) will start a pre-buffering thread.
Timeout	if < 0, then we will not open the file. Otherwise it's how long to try opening the file after the first failure in milliseconds before giving up.
StreamOnly	If true disallow DVD and Bluray (used by FileTransfer)

Definition at line 99 of file mythmediabuffer.cpp.

Referenced by CopyFile(), FlagCommercials(), TVRec::GetProgramRingBufferForLiveTV(), PreviewGenerator::GetScreenGrab(), TV::HandleStateChange(), NuppelVideoRecorder::Initialize(), MythFileOpen(), MythAVFormatWriter::OpenFile(), pid_counter(), pid_filter(), pid_printer(), RebuildSeekTable(), ImportRecorder::run(), RunCCExtract(), TV::SwitchInputs(), TVRec::SwitchRecordingRingBuffer(), VideoPerformanceTest::Test(), Transcode::TranscodeFile(), and TVRec::TuningNewRecorder().

◆ GetType()

MythBufferType MythMediaBuffer::GetType ( ) const

Definition at line 204 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::JumpToProgram(), MythPlayerUI::JumpToStream(), MythPlayerCaptionsUI::SetStream(), and MythPlayerUI::SwitchToProgram().

◆ BitrateToString()

QString MythMediaBuffer::BitrateToString	(	uint64_t	Rate,
		bool	Hz = `false`
	)

static

Definition at line 1506 of file mythmediabuffer.cpp.

Referenced by GetDecoderRate(), MythPlayerUI::GetPlaybackData(), and GetStorageRate().

◆ AVFormatInitNetwork()

void MythMediaBuffer::AVFormatInitNetwork ( void )

static

Definition at line 1866 of file mythmediabuffer.cpp.

Referenced by MythStreamingBuffer::OpenFile(), and HLSRingBuffer::TestForHTTPLiveStreaming().

◆ SetOldFile()

void MythMediaBuffer::SetOldFile ( bool Old )

Tell RingBuffer if this is an old file or not.

Normally the RingBuffer determines that the file is old if it has not been modified in the last minute. This allows one to override that determination externally.

If for instance you are slowly writing to the file you could call this with the value of false. If you just finished writing the file you could call it with the value true. Knowing that the file is old allows MythTV to determine that a read at the end of the file is really an end-of-file condition more quickly. But if the file is growing it can also cause the RingBuffer to report an end-of-file condition prematurely.

Definition at line 1737 of file mythmediabuffer.cpp.

Referenced by FileTransfer::SetTimeout(), and BEFileTransfer::SetTimeout().

◆ UpdateRawBitrate()

void MythMediaBuffer::UpdateRawBitrate ( uint RawBitrate )

Set the raw bit rate, to allow RingBuffer adjust effective bitrate.

Parameters

RawBitrate Streams average number of kilobits per second when playspeed is 1.0

Definition at line 279 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::JumpToProgram(), MythPlayerUI::JumpToStream(), AvFormatDecoder::ScanStreams(), and MythPlayerUI::SwitchToProgram().

◆ UpdatePlaySpeed()

void MythMediaBuffer::UpdatePlaySpeed ( float PlaySpeed )

Set the play speed, to allow RingBuffer adjust effective bitrate.

Parameters

play_speed Speed to set. (1.0 for normal speed)

Definition at line 307 of file mythmediabuffer.cpp.

◆ EnableBitrateMonitor()

void MythMediaBuffer::EnableBitrateMonitor ( bool Enable )

Definition at line 315 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::EnableBitrateMonitor().

◆ SetBufferSizeFactors()

void MythMediaBuffer::SetBufferSizeFactors	(	bool	EstBitrate,
		bool	Matroska
	)

Tells RingBuffer that the raw bitrate may be inaccurate and the underlying container is matroska, both of which may require a larger buffer size.

Definition at line 330 of file mythmediabuffer.cpp.

Referenced by AvFormatDecoder::ScanStreams().

◆ SetWaitForWrite()

void MythMediaBuffer::SetWaitForWrite ( void )

Definition at line 320 of file mythmediabuffer.cpp.

Referenced by RunCCExtract().

◆ GetSafeFilename()

QString MythMediaBuffer::GetSafeFilename ( void )

Definition at line 1753 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::GetPlaybackData(), MythPreviewPlayer::GetScreenGrabAtFrame(), and MythPlayer::OpenFile().

◆ GetFilename()

QString MythMediaBuffer::GetFilename ( void ) const

◆ GetSubtitleFilename()

QString MythMediaBuffer::GetSubtitleFilename ( void ) const

Definition at line 1758 of file mythmediabuffer.cpp.

Referenced by MythPlayerCaptionsUI::LoadExternalSubtitles().

◆ GetLastError()

QString MythMediaBuffer::GetLastError ( void ) const

Definition at line 1766 of file mythmediabuffer.cpp.

Referenced by TV::HandleStateChange(), MythAVFormatWriter::OpenFile(), and Transcode::TranscodeFile().

◆ GetCommsError()

bool MythMediaBuffer::GetCommsError ( void ) const

Definition at line 1774 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::EventLoop().

◆ ResetCommsError()

void MythMediaBuffer::ResetCommsError ( void )

Definition at line 1779 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::EventLoop().

◆ GetStopReads()

bool MythMediaBuffer::GetStopReads ( void ) const

Definition at line 1784 of file mythmediabuffer.cpp.

Referenced by MythPlayer::OpenFile(), FileTransfer::RequestBlock(), and BEFileTransfer::RequestBlock().

◆ GetDecoderRate()

QString MythMediaBuffer::GetDecoderRate ( void )

Definition at line 1539 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::GetPlaybackData().

◆ GetStorageRate()

QString MythMediaBuffer::GetStorageRate ( void )

Definition at line 1544 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::GetPlaybackData().

◆ GetAvailableBuffer()

QString MythMediaBuffer::GetAvailableBuffer ( void )

Definition at line 1549 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::GetPlaybackData().

◆ GetBufferSize()

uint MythMediaBuffer::GetBufferSize ( void ) const

Definition at line 1559 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::GetPlaybackData().

◆ IsNearEnd()

bool MythMediaBuffer::IsNearEnd	(	double	Framerate,
		uint	Frames
	)		const

Definition at line 412 of file mythmediabuffer.cpp.

Referenced by MythPlayer::IsReallyNearEnd().

◆ GetWritePosition()

long long MythMediaBuffer::GetWritePosition ( void ) const

Returns how far into a ThreadedFileWriter file we have written.

Definition at line 1792 of file mythmediabuffer.cpp.

Referenced by DTVRecorder::FindH2645Keyframes(), DTVRecorder::FindMPEG2Keyframes(), TVRec::GetFilePosition(), DTVRecorder::HandleKeyframe(), RecorderBase::SavePositionMap(), NuppelVideoRecorder::UpdateSeekTable(), NuppelVideoRecorder::WriteHeader(), NuppelVideoRecorder::WriteKeyFrameAdjustTable(), and NuppelVideoRecorder::WriteSeekTable().

◆ GetRealFileSize()

long long MythMediaBuffer::GetRealFileSize ( void ) const

Definition at line 468 of file mythmediabuffer.cpp.

Referenced by CopyFile(), RecorderBase::FinishRecording(), FileTransfer::GetFileSize(), BEFileTransfer::GetFileSize(), AvFormatDecoder::HandleGopStart(), MythPlayerUI::JumpToStream(), AvFormatDecoder::OpenFile(), ImportRecorder::run(), MythAVFormatBuffer::Seek(), RecorderBase::SetNextRecording(), and ImportRecorder::UpdateRecSize().

◆ IsDisc()

bool MythMediaBuffer::IsDisc ( void ) const

Definition at line 1831 of file mythmediabuffer.cpp.

Referenced by DecoderBase::DoRewind(), DecoderBase::GetKey(), AvFormatDecoder::OpenFile(), DecoderBase::PosMapFromDb(), and DecoderBase::PosMapFromEnc().

◆ IsDVD()

bool MythMediaBuffer::IsDVD ( void ) const

Definition at line 1836 of file mythmediabuffer.cpp.

◆ IsBD()

◆ DVD() [1/2]

const MythDVDBuffer * MythMediaBuffer::DVD ( void ) const

Definition at line 1846 of file mythmediabuffer.cpp.

Referenced by TV::ActiveHandleAction(), MythDVDPlayer::CalcMaxFFTime(), MythDVDPlayer::ChangeSpeed(), MythDVDDecoder::CheckContext(), MythDVDPlayer::DisableCaptions(), MythDVDPlayer::DisplayDVDButton(), MythDVDPlayer::DisplayPauseFrame(), DecoderBase::DoFastForward(), MythDVDPlayer::DoJumpChapter(), MythDVDDecoder::DVDFindPosition(), MythDVDPlayer::EnableCaptions(), MythDVDPlayer::EventEnd(), MythDVDPlayer::EventStart(), MythDVDDecoder::GetAudioLanguage(), MythDVDDecoder::GetAudioTrackType(), MythDVDPlayer::GetBookmark(), MythDVDPlayer::GetChapterTimes(), MythDVDPlayer::GetCurrentAngle(), MythDVDPlayer::GetCurrentChapter(), MythDVDPlayer::GetMillisecondsPlayed(), MythDVDPlayer::GetNumAngles(), MythDVDPlayer::GetNumChapters(), MythDVDPlayer::GoToDVDProgram(), MythDVDPlayer::GoToMenu(), MythDVDPlayer::InitialSeek(), AvFormatDecoder::MpegPreProcessPkt(), DecoderBase::PosMapFromDb(), MythDVDDecoder::PostProcessTracks(), MythDVDPlayer::PrepareAudioSample(), MythDVDDecoder::ProcessDataPacket(), AvFormatDecoder::ProcessSubtitlePacket(), MythDVDDecoder::ProcessVideoPacket(), MythDVDDecoder::ReadPacket(), AvFormatDecoder::ScanStreams(), MythDVDPlayer::SetBookmark(), MythDVDPlayer::SetTrack(), TV::ShowLCDDVDInfo(), MythDVDPlayer::StillFrameCheck(), MythDVDDecoder::StreamChangeCheck(), MythDVDPlayer::SwitchAngle(), DecoderBase::SyncPositionMap(), MythDVDDecoder::UpdateFramesPlayed(), MythDVDPlayer::VideoLoop(), and MythDVDPlayer::VideoStart().

◆ DVD() [2/2]

MythDVDBuffer * MythMediaBuffer::DVD ( void )

Definition at line 1856 of file mythmediabuffer.cpp.

◆ BD() [1/2]

const MythBDBuffer * MythMediaBuffer::BD ( void ) const

Definition at line 1851 of file mythmediabuffer.cpp.

◆ BD() [2/2]

MythBDBuffer * MythMediaBuffer::BD ( void )

Definition at line 1861 of file mythmediabuffer.cpp.

◆ Read()

int MythMediaBuffer::Read	(	void *	Buffer,
		int	Count
	)

This is the public method for reading from a file, it calls the appropriate read method if the file is remote or buffered, or a BD/DVD.

Parameters

buf	Pointer to where data will be written
count	Number of bytes to read

Returns: Returns number of bytes read

Definition at line 1492 of file mythmediabuffer.cpp.

Referenced by CopyFile(), pid_counter(), pid_filter(), pid_printer(), MythAVFormatBuffer::Read(), FileTransfer::RequestBlock(), and BEFileTransfer::RequestBlock().

◆ Peek() [1/2]

int MythMediaBuffer::Peek	(	void *	Buffer,
		int	Count
	)

Note: Only works with readahead

Definition at line 1170 of file mythmediabuffer.cpp.

Referenced by MythPlayer::OpenFile(), Peek(), ReadDirect(), and ReadPriv().

◆ Peek() [2/2]

int MythMediaBuffer::Peek ( std::vector< char > & Buffer )

Definition at line 1181 of file mythmediabuffer.cpp.

◆ Reset()

void MythMediaBuffer::Reset	(	bool	Full = `false`,
		bool	ToAdjust = `false`,
		bool	ResetInternal = `false`
	)

Resets the read-ahead thread and our position in the file.

Definition at line 238 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::FileChanged(), MythPlayerUI::JumpToProgram(), MythInteractiveBuffer::OpenFile(), and MythPlayerUI::SwitchToProgram().

◆ Pause()

void MythMediaBuffer::Pause ( void )

Pauses the read-ahead thread. Calls StopReads(void).

See also: Unpause(void), WaitForPause(void)

Definition at line 690 of file mythmediabuffer.cpp.

Referenced by MythInteractiveBuffer::OpenFile(), MythPlayer::PauseBuffer(), TV::StopStuff(), and TV::SwitchInputs().

◆ Unpause()

void MythMediaBuffer::Unpause ( void )

Unpauses the read-ahead thread. Calls StartReads(void).

See also: Pause(void)

Definition at line 704 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::SwitchToProgram(), MythInteractiveBuffer::TakeBuffer(), and MythPlayer::UnpauseBuffer().

◆ WaitForPause()

void MythMediaBuffer::WaitForPause ( void )

Waits for Pause(void) to take effect.

Definition at line 718 of file mythmediabuffer.cpp.

Referenced by TV::DoTogglePauseFinish(), MythPlayer::PauseBuffer(), TV::StopStuff(), and TV::SwitchInputs().

◆ Start()

void MythMediaBuffer::Start ( void )

Starts the read-ahead thread.

If the RingBuffer constructor was not called with a usereadahead of true of if this was reset to false because we're dealing with a DVD the read ahead thread will not be started.

If this RingBuffer is in write-mode a warning will be printed and the read ahead thread will not be started.

If the read ahead thread is already running a warning will be printed and the read ahead thread will not be started.

Definition at line 617 of file mythmediabuffer.cpp.

Referenced by BEFileTransfer::BEFileTransfer(), MythFileOpen(), MythPlayer::OpenFile(), and MythDVDStream::SafeRead().

◆ StopReads()

void MythMediaBuffer::StopReads ( void )

See also: StartReads(void), Pause(void)

Definition at line 669 of file mythmediabuffer.cpp.

Referenced by KillReadAheadThread(), FileTransfer::Pause(), BEFileTransfer::Pause(), Pause(), TV::PauseLiveTV(), MythBDBuffer::SafeRead(), MythFileBuffer::SeekInternal(), FileTransfer::Stop(), BEFileTransfer::Stop(), TV::StopStuff(), TV::SwitchInputs(), and TVRec::TeardownRecorder().

◆ StartReads()

void MythMediaBuffer::StartReads ( void )

See also: StopReads(void), Unpause(void)

Definition at line 679 of file mythmediabuffer.cpp.

Referenced by TV::PauseLiveTV(), MythFileBuffer::SeekInternal(), Start(), FileTransfer::Unpause(), BEFileTransfer::Unpause(), and Unpause().

◆ Seek()

long long MythMediaBuffer::Seek	(	long long	Position,
		int	Whence,
		bool	HasLock = `false`
	)

Definition at line 479 of file mythmediabuffer.cpp.

Referenced by MythBDDecoder::DoFastForwardSeek(), MythDVDDecoder::DoFastForwardSeek(), DecoderBase::DoFastForwardSeek(), MythBDDecoder::DoRewindSeek(), MythDVDDecoder::DoRewindSeek(), DecoderBase::DoRewindSeek(), ReadDirect(), FileTransfer::Seek(), and BEFileTransfer::Seek().

◆ SetAdjustFilesize()

long long MythMediaBuffer::SetAdjustFilesize ( void )

Definition at line 1158 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::SwitchToProgram().

◆ GetReadBufAvail()

int MythMediaBuffer::GetReadBufAvail ( void ) const

Returns number of bytes available for reading from buffer.

Definition at line 462 of file mythmediabuffer.cpp.

Referenced by AvFormatDecoder::InitByteContext().

◆ SetReadInternalMode()

bool MythMediaBuffer::SetReadInternalMode ( bool Mode )

Definition at line 523 of file mythmediabuffer.cpp.

Referenced by MythAVFormatBuffer::SetInInit().

◆ IsReadInternalMode()

bool MythMediaBuffer::IsReadInternalMode ( void ) const

Definition at line 548 of file mythmediabuffer.cpp.

◆ LiveMode()

bool MythMediaBuffer::LiveMode ( void ) const

Returns true if this RingBuffer has been assigned a LiveTVChain.

See also: SetLiveMode(LiveTVChain*)

Definition at line 1804 of file mythmediabuffer.cpp.

Referenced by NuppelVideoRecorder::Initialize(), IsStreamed(), and MythPlayer::OpenFile().

◆ SetLiveMode()

void MythMediaBuffer::SetLiveMode ( LiveTVChain * Chain )

Assigns a LiveTVChain to this RingBuffer.

See also: LiveMode(void)

Definition at line 1816 of file mythmediabuffer.cpp.

Referenced by TV::HandleStateChange(), and TV::SwitchInputs().

◆ IgnoreLiveEOF()

void MythMediaBuffer::IgnoreLiveEOF ( bool Ignore )

Tells RingBuffer whether to ignore the end-of-file.

Definition at line 1824 of file mythmediabuffer.cpp.

Referenced by MythPlayerUI::JumpToProgram(), TV::PauseLiveTV(), TV::SwitchInputs(), and TV::UnpauseLiveTV().

◆ Write()

int MythMediaBuffer::Write	(	const void *	Buffer,
		uint	Count
	)

◆ IsIOBound()

bool MythMediaBuffer::IsIOBound ( void ) const

◆ WriterFlush()

void MythMediaBuffer::WriterFlush ( void )

Calls ThreadedFileWriter::Flush(void)

Definition at line 1703 of file mythmediabuffer.cpp.

Referenced by DTVRecorder::FinishRecording(), NuppelVideoRecorder::FinishRecording(), RecorderBase::SetNextRecording(), FileTransfer::Stop(), and BEFileTransfer::Stop().

◆ Sync()

void MythMediaBuffer::Sync ( void )

Calls ThreadedFileWriter::Sync(void)

Definition at line 1667 of file mythmediabuffer.cpp.

◆ WriterSeek()

long long MythMediaBuffer::WriterSeek	(	long long	Position,
		int	Whence,
		bool	HasLock = `false`
	)

Calls ThreadedFileWriter::Seek(long long,int).

Definition at line 1677 of file mythmediabuffer.cpp.

Referenced by MythFileBuffer::SeekInternal(), NuppelVideoRecorder::WriteKeyFrameAdjustTable(), and NuppelVideoRecorder::WriteSeekTable().

◆ WriterSetBlocking()

bool MythMediaBuffer::WriterSetBlocking ( bool Lock = true )

Calls ThreadedFileWriter::SetBlocking(bool)

Definition at line 1714 of file mythmediabuffer.cpp.

Referenced by CopyFile(), FileTransfer::FileTransfer(), and pid_printer().

◆ GetReadPosition()

virtual long long MythMediaBuffer::GetReadPosition ( void ) const

pure virtual

Implemented in MythDVDBuffer, HLSRingBuffer, MythBDBuffer, MythDVDStream, MythStreamingBuffer, MythFileBuffer, and MythInteractiveBuffer.

Referenced by FileTransfer::Seek(), BEFileTransfer::Seek(), and AvFormatDecoder::SeekReset().

◆ IsOpen()

virtual bool MythMediaBuffer::IsOpen ( void ) const

pure virtual

◆ IsStreamed()

virtual bool MythMediaBuffer::IsStreamed ( void )

inlinevirtual

Reimplemented in HLSRingBuffer, MythStreamingBuffer, MythInteractiveBuffer, and MythOpticalBuffer.

Definition at line 134 of file mythmediabuffer.h.

Referenced by AvFormatDecoder::InitByteContext(), and AvFormatDecoder::OpenFile().

◆ IsSeekingAllowed()

virtual bool MythMediaBuffer::IsSeekingAllowed ( void )

inlinevirtual

Reimplemented in HLSRingBuffer, MythDVDBuffer, MythStreamingBuffer, and MythInteractiveBuffer.

Definition at line 135 of file mythmediabuffer.h.

Referenced by MythPlayer::DoFastForward(), TV::DoPlayerSeek(), TV::DoPlayerSeekToFrame(), MythPlayer::DoRewind(), TV::PlaybackMenuInit(), and TV::SetFFRew().

◆ IsBookmarkAllowed()

virtual bool MythMediaBuffer::IsBookmarkAllowed ( void )

inlinevirtual

Reimplemented in HLSRingBuffer, MythDVDBuffer, MythStreamingBuffer, and MythInteractiveBuffer.

Definition at line 136 of file mythmediabuffer.h.

Referenced by MythPlayer::GetBookmark(), TV::IsBookmarkAllowed(), MythBDPlayer::SetBookmark(), and MythDVDPlayer::SetBookmark().

◆ BestBufferSize()

virtual int MythMediaBuffer::BestBufferSize ( void )

inlinevirtual

Reimplemented in MythDVDBuffer.

Definition at line 137 of file mythmediabuffer.h.

Referenced by AvFormatDecoder::InitByteContext().

◆ StartFromBeginning()

virtual bool MythMediaBuffer::StartFromBeginning ( void )

inlinevirtual

Reimplemented in MythDVDBuffer, and MythBDBuffer.

Definition at line 138 of file mythmediabuffer.h.

Referenced by AvFormatDecoder::OpenFile().

◆ IgnoreWaitStates()

virtual void MythMediaBuffer::IgnoreWaitStates ( bool )

inlinevirtual

Reimplemented in MythDVDBuffer, and MythBDBuffer.

Definition at line 139 of file mythmediabuffer.h.

Referenced by MythDVDPlayer::InitialSeek(), AvFormatDecoder::OpenFile(), and TV::StopStuff().

◆ IsInMenu()

virtual bool MythMediaBuffer::IsInMenu ( void ) const

inlinevirtual

Reimplemented in MythOpticalBuffer.

Definition at line 140 of file mythmediabuffer.h.

Referenced by IsInDiscMenuOrStillFrame(), MythBDPlayer::SetBookmark(), and MythDVDPlayer::SetBookmark().

◆ IsInStillFrame()

virtual bool MythMediaBuffer::IsInStillFrame ( void ) const

inlinevirtual

Reimplemented in MythDVDBuffer, and MythBDBuffer.

Definition at line 141 of file mythmediabuffer.h.

Referenced by AvFormatDecoder::GetFrame(), IsInDiscMenuOrStillFrame(), and AvFormatDecoder::ProcessAudioPacket().

◆ IsInDiscMenuOrStillFrame()

virtual bool MythMediaBuffer::IsInDiscMenuOrStillFrame ( void ) const

inlinevirtual

Definition at line 142 of file mythmediabuffer.h.

Referenced by AvFormatDecoder::AutoSelectTrack(), DecoderBase::DoFastForward(), MythDVDPlayer::DoJumpChapter(), TV::DoTogglePauseFinish(), TV::DoTogglePauseStart(), TV::DVDJumpBack(), TV::HandleLCDTimerEvent(), TV::OSDDialogEvent(), MythDVDPlayer::PrepareAudioSample(), TV::ProcessKeypressOrGesture(), TV::ProcessNetworkControlCommand(), and MythDVDPlayer::ReleaseNextVideoFrame().

◆ HandleAction()

virtual bool MythMediaBuffer::HandleAction	(	const QStringList &	,
		mpeg::chrono::pts
	)

inlinevirtual

Reimplemented in MythDVDBuffer, and MythBDBuffer.

Definition at line 143 of file mythmediabuffer.h.

Referenced by TV::DiscMenuHandleAction().

◆ OpenFile()

virtual bool MythMediaBuffer::OpenFile	(	const QString &	Filename,
		std::chrono::milliseconds	Retry = `kDefaultOpenTimeout`
	)

pure virtual

Implemented in MythInteractiveBuffer, HLSRingBuffer, MythDVDBuffer, MythBDBuffer, MythStreamingBuffer, MythFileBuffer, and MythDVDStream.

Referenced by MythPlayerUI::JumpToProgram(), MythPlayerUI::JumpToStream(), and MythPlayerUI::SwitchToProgram().

◆ ReOpen()

virtual bool MythMediaBuffer::ReOpen ( const QString & = "" )

inlinevirtual

Reimplemented in MythFileBuffer.

Definition at line 145 of file mythmediabuffer.h.

Referenced by FileTransfer::ReOpen(), BEFileTransfer::ReOpen(), and MythAVFormatWriter::ReOpen().

◆ run()

void MythMediaBuffer::run ( void )

overrideprotectedvirtual

Runs the Qt event loop unless we have a QRunnable, in which case we run the runnable run instead.

Note: If you override this method you must call RunProlog before you do any work and RunEpilog before you exit the run method.

Reimplemented from MThread.

Definition at line 825 of file mythmediabuffer.cpp.

◆ CreateReadAheadBuffer()

void MythMediaBuffer::CreateReadAheadBuffer ( void )

protected

Definition at line 777 of file mythmediabuffer.cpp.

Referenced by run(), and SetBufferSizeFactors().

◆ CalcReadAheadThresh()

void MythMediaBuffer::CalcReadAheadThresh ( void )

protected

Calculates m_fillMin, m_fillThreshold, and m_readBlockSize from the estimated effective bitrate of the stream.

Warning: Must be called with rwlock in write lock state.

Definition at line 367 of file mythmediabuffer.cpp.

Referenced by CreateReadAheadBuffer(), MythInteractiveBuffer::OpenFile(), MythFileBuffer::OpenFile(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), ResetReadAhead(), run(), UpdatePlaySpeed(), and UpdateRawBitrate().

◆ PauseAndWait()

bool MythMediaBuffer::PauseAndWait ( void )

protected

Definition at line 734 of file mythmediabuffer.cpp.

Referenced by run().

◆ ReadPriv()

int MythMediaBuffer::ReadPriv	(	void *	Buffer,
		int	Count,
		bool	Peek
	)

protected

When possible reads from the read-ahead buffer, otherwise reads directly from the device.

Parameters

Buffer	Pointer to where data will be written
Count	Number of bytes to read
Peek	If true, don't increment read count

Returns: Returns number of bytes read

Definition at line 1326 of file mythmediabuffer.cpp.

Referenced by Peek(), and Read().

◆ ReadDirect()

int MythMediaBuffer::ReadDirect	(	void *	Buffer,
		int	Count,
		bool	Peek
	)

protected

Definition at line 1251 of file mythmediabuffer.cpp.

Referenced by ReadPriv().

◆ WaitForReadsAllowed()

bool MythMediaBuffer::WaitForReadsAllowed ( void )

protected

Definition at line 1186 of file mythmediabuffer.cpp.

Referenced by ReadPriv().

◆ WaitForAvail()

int MythMediaBuffer::WaitForAvail	(	int	Count,
		std::chrono::milliseconds	Timeout
	)

protected

Definition at line 1215 of file mythmediabuffer.cpp.

Referenced by ReadPriv().

◆ ReadBufFree()

int MythMediaBuffer::ReadBufFree ( void ) const

protected

Returns number of bytes available for reading into buffer.

Warning: Must be called with rwlock in locked state.

Definition at line 451 of file mythmediabuffer.cpp.

Referenced by run().

◆ ReadBufAvail()

int MythMediaBuffer::ReadBufAvail ( void ) const

protected

Returns number of bytes available for reading from buffer.

Warning: Must be called with rwlock in locked state.

Definition at line 555 of file mythmediabuffer.cpp.

Referenced by GetReadBufAvail(), GetRealFileSize(), ReadPriv(), Seek(), and WaitForAvail().

◆ ResetReadAhead()

void MythMediaBuffer::ResetReadAhead ( long long NewInternal )

protected

Restart the read-ahead thread at the 'newinternal' position.

This is called after a Seek(long long, int) so that the read-ahead buffer doesn't contain any stale data, and so that it will read any new data from the new position in the file.

Warning: Must be called with rwlock and poslock in write lock state.

Parameters

NewInternal Position in file to start reading data from

Definition at line 575 of file mythmediabuffer.cpp.

Referenced by Reset(), run(), MythInteractiveBuffer::SeekInternal(), MythFileBuffer::SeekInternal(), MythBDBuffer::SeekInternal(), and MythDVDBuffer::SeekInternal().

◆ KillReadAheadThread()

void MythMediaBuffer::KillReadAheadThread ( void )

protected

Stops the read-ahead thread, and waits for it to stop.

Definition at line 653 of file mythmediabuffer.cpp.

Referenced by HLSRingBuffer::~HLSRingBuffer(), MythBDBuffer::~MythBDBuffer(), MythDVDBuffer::~MythDVDBuffer(), MythDVDStream::~MythDVDStream(), MythFileBuffer::~MythFileBuffer(), MythInteractiveBuffer::~MythInteractiveBuffer(), and MythStreamingBuffer::~MythStreamingBuffer().

◆ UpdateDecoderRate()

uint64_t MythMediaBuffer::UpdateDecoderRate ( uint64_t Latest = 0 )

protected

Definition at line 1564 of file mythmediabuffer.cpp.

Referenced by GetDecoderRate(), and Read().

◆ UpdateStorageRate()

uint64_t MythMediaBuffer::UpdateStorageRate ( uint64_t Latest = 0 )

protected

Definition at line 1595 of file mythmediabuffer.cpp.

Referenced by GetStorageRate(), ReadDirect(), and run().

◆ SafeRead()

virtual int MythMediaBuffer::SafeRead	(	void *	Buffer,
		uint	Size
	)

protectedpure virtual

Implemented in HLSRingBuffer, MythDVDBuffer, MythBDBuffer, MythDVDStream, MythStreamingBuffer, MythInteractiveBuffer, and MythFileBuffer.

Referenced by ReadDirect(), and run().

◆ GetRealFileSizeInternal()

virtual long long MythMediaBuffer::GetRealFileSizeInternal ( void ) const

inlineprotectedvirtual

Reimplemented in HLSRingBuffer, MythStreamingBuffer, MythFileBuffer, and MythInteractiveBuffer.

Definition at line 166 of file mythmediabuffer.h.

Referenced by GetRealFileSize().

◆ SeekInternal()

virtual long long MythMediaBuffer::SeekInternal	(	long long	Position,
		int	Whence
	)

protectedpure virtual

Implemented in MythDVDBuffer, MythBDBuffer, MythDVDStream, MythStreamingBuffer, MythFileBuffer, MythInteractiveBuffer, and HLSRingBuffer.

Referenced by Seek().

Friends And Related Function Documentation

◆ MythInteractiveBuffer

friend class MythInteractiveBuffer

friend

Definition at line 61 of file mythmediabuffer.h.

Member Data Documentation

◆ kDefaultOpenTimeout

constexpr std::chrono::milliseconds MythMediaBuffer::kDefaultOpenTimeout { 2s }

staticconstexpr

Definition at line 71 of file mythmediabuffer.h.

Referenced by MythFileOpen().

◆ kLiveTVOpenTimeout

constexpr std::chrono::milliseconds MythMediaBuffer::kLiveTVOpenTimeout { 10s }

staticconstexpr

Definition at line 72 of file mythmediabuffer.h.

Referenced by TV::HandleStateChange(), MythPlayerUI::JumpToProgram(), TV::SwitchInputs(), and MythPlayerUI::SwitchToProgram().

◆ m_type

MythBufferType MythMediaBuffer::m_type

protected

Definition at line 171 of file mythmediabuffer.h.

Referenced by GetAvailableBuffer(), GetType(), IsBD(), and IsDVD().

◆ m_posLock

QReadWriteLock MythMediaBuffer::m_posLock

mutableprotected

◆ m_readPos

long long MythMediaBuffer::m_readPos { 0 }

protected

Definition at line 174 of file mythmediabuffer.h.

Referenced by MythFileBuffer::GetReadPosition(), IsNearEnd(), Read(), ReadDirect(), Reset(), run(), Seek(), MythInteractiveBuffer::SeekInternal(), MythFileBuffer::SeekInternal(), MythBDBuffer::SeekInternal(), and MythDVDBuffer::SeekInternal().

◆ m_writePos

long long MythMediaBuffer::m_writePos { 0 }

protected

Definition at line 175 of file mythmediabuffer.h.

Referenced by GetWritePosition(), MythFileBuffer::ReOpen(), Reset(), Write(), and WriterSeek().

◆ m_internalReadPos

long long MythMediaBuffer::m_internalReadPos { 0 }

protected

Definition at line 176 of file mythmediabuffer.h.

Referenced by IsNearEnd(), Reset(), ResetReadAhead(), run(), MythFileBuffer::SafeRead(), MythFileBuffer::SeekInternal(), and SetAdjustFilesize().

◆ m_ignoreReadPos

long long MythMediaBuffer::m_ignoreReadPos { -1 }

protected

Definition at line 177 of file mythmediabuffer.h.

Referenced by ReadDirect(), ReadPriv(), run(), MythInteractiveBuffer::SeekInternal(), MythFileBuffer::SeekInternal(), MythBDBuffer::SeekInternal(), and MythDVDBuffer::SeekInternal().

◆ m_rbrLock

QReadWriteLock MythMediaBuffer::m_rbrLock

mutableprotected

Definition at line 179 of file mythmediabuffer.h.

Referenced by ReadBufAvail(), ReadBufFree(), ReadPriv(), ResetReadAhead(), run(), MythFileBuffer::SeekInternal(), and SetReadInternalMode().

◆ m_rbrPos

int MythMediaBuffer::m_rbrPos { 0 }

protected

Definition at line 180 of file mythmediabuffer.h.

Referenced by CreateReadAheadBuffer(), GetAvailableBuffer(), ReadBufAvail(), ReadBufFree(), ReadPriv(), ResetReadAhead(), run(), MythFileBuffer::SeekInternal(), and SetReadInternalMode().

◆ m_rbwLock

QReadWriteLock MythMediaBuffer::m_rbwLock

mutableprotected

Definition at line 182 of file mythmediabuffer.h.

Referenced by ReadBufAvail(), ReadBufFree(), ResetReadAhead(), run(), and MythFileBuffer::SeekInternal().

◆ m_rbwPos

int MythMediaBuffer::m_rbwPos { 0 }

protected

Definition at line 183 of file mythmediabuffer.h.

Referenced by CreateReadAheadBuffer(), GetAvailableBuffer(), ReadBufAvail(), ReadBufFree(), ResetReadAhead(), run(), and MythFileBuffer::SeekInternal().

◆ m_stopReads

volatile bool MythMediaBuffer::m_stopReads {false}

protected

Definition at line 187 of file mythmediabuffer.h.

Referenced by GetStopReads(), IsNearEnd(), ReadPriv(), run(), MythFileBuffer::SafeRead(), StartReads(), StopReads(), WaitForAvail(), and WaitForReadsAllowed().

◆ m_safeFilename

QString MythMediaBuffer::m_safeFilename

protected

Definition at line 190 of file mythmediabuffer.h.

Referenced by GetSafeFilename(), MythFileBuffer::MythFileBuffer(), MythInteractiveBuffer::OpenFile(), MythFileBuffer::OpenFile(), MythStreamingBuffer::OpenFile(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), and HLSRingBuffer::OpenFile().

◆ m_rwLock

QReadWriteLock MythMediaBuffer::m_rwLock

mutableprotected

Definition at line 192 of file mythmediabuffer.h.

Referenced by MythDVDBuffer::ClearChapterCache(), MythDVDBuffer::CloseDVD(), CreateReadAheadBuffer(), GetFilename(), GetLastError(), GetReadBufAvail(), GetRealFileSize(), MythFileBuffer::GetRealFileSizeInternal(), MythStreamingBuffer::GetRealFileSizeInternal(), HLSRingBuffer::GetRealFileSizeInternal(), GetSubtitleFilename(), IgnoreLiveEOF(), IsNearEnd(), MythFileBuffer::IsOpen(), MythStreamingBuffer::IsOpen(), MythDVDStream::IsOpen(), KillReadAheadThread(), LiveMode(), MythInteractiveBuffer::OpenFile(), MythFileBuffer::OpenFile(), MythStreamingBuffer::OpenFile(), MythDVDStream::OpenFile(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), HLSRingBuffer::OpenFile(), Pause(), PauseAndWait(), ReadPriv(), MythFileBuffer::ReOpen(), Reset(), run(), MythDVDBuffer::SafeRead(), Seek(), SetAdjustFilesize(), SetBufferSizeFactors(), SetLiveMode(), SetOldFile(), SetReadInternalMode(), Start(), Sync(), Unpause(), UpdatePlaySpeed(), UpdateRawBitrate(), WaitForAvail(), WaitForPause(), MythDVDBuffer::WaitForPlayer(), WaitForReadsAllowed(), Write(), WriterFlush(), WriterSeek(), WriterSetBlocking(), HLSRingBuffer::~HLSRingBuffer(), MythDVDStream::~MythDVDStream(), and MythStreamingBuffer::~MythStreamingBuffer().

◆ m_filename

QString MythMediaBuffer::m_filename

protected

Definition at line 193 of file mythmediabuffer.h.

Referenced by GetFilename(), MythFileBuffer::GetRealFileSizeInternal(), MythFileBuffer::MythFileBuffer(), MythInteractiveBuffer::OpenFile(), MythFileBuffer::OpenFile(), MythStreamingBuffer::OpenFile(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), HLSRingBuffer::OpenFile(), MythFileBuffer::ReOpen(), run(), MythFileBuffer::SeekInternal(), MythDVDBuffer::SetDVDSpeed(), and MythDVDBuffer::StartFromBeginning().

◆ m_subtitleFilename

QString MythMediaBuffer::m_subtitleFilename

protected

Definition at line 194 of file mythmediabuffer.h.

Referenced by GetSubtitleFilename(), and MythFileBuffer::OpenFile().

◆ m_lastError

QString MythMediaBuffer::m_lastError

protected

Definition at line 195 of file mythmediabuffer.h.

Referenced by GetLastError(), MythFileBuffer::OpenFile(), MythStreamingBuffer::OpenFile(), MythBDBuffer::OpenFile(), and MythDVDBuffer::OpenFile().

◆ m_tfw

ThreadedFileWriter* MythMediaBuffer::m_tfw { nullptr }

protected

Definition at line 196 of file mythmediabuffer.h.

Referenced by MythFileBuffer::IsOpen(), MythFileBuffer::MythFileBuffer(), MythFileBuffer::ReOpen(), Sync(), Write(), WriterFlush(), WriterSeek(), WriterSetBlocking(), MythFileBuffer::~MythFileBuffer(), and ~MythMediaBuffer().

◆ m_fd2

int MythMediaBuffer::m_fd2 { -1 }

protected

Definition at line 197 of file mythmediabuffer.h.

Referenced by MythFileBuffer::GetRealFileSizeInternal(), MythFileBuffer::IsOpen(), MythFileBuffer::OpenFile(), ReadDirect(), MythFileBuffer::SafeRead(), MythFileBuffer::SeekInternal(), and MythFileBuffer::~MythFileBuffer().

◆ m_writeMode

bool MythMediaBuffer::m_writeMode { false }

protected

Definition at line 198 of file mythmediabuffer.h.

Referenced by MythFileBuffer::MythFileBuffer(), ReadPriv(), MythFileBuffer::ReOpen(), MythFileBuffer::SeekInternal(), Start(), and Write().

◆ m_remotefile

RemoteFile* MythMediaBuffer::m_remotefile { nullptr }

protected

Definition at line 199 of file mythmediabuffer.h.

Referenced by CreateReadAheadBuffer(), MythFileBuffer::GetRealFileSizeInternal(), MythFileBuffer::IsOpen(), MythFileBuffer::MythFileBuffer(), MythFileBuffer::OpenFile(), ReadDirect(), MythFileBuffer::ReOpen(), MythFileBuffer::SafeRead(), MythFileBuffer::SeekInternal(), Write(), and MythFileBuffer::~MythFileBuffer().

◆ m_bufferSize

uint MythMediaBuffer::m_bufferSize { BUFFER_SIZE_MINIMUM }

protected

Definition at line 200 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), CreateReadAheadBuffer(), GetAvailableBuffer(), GetBufferSize(), ReadBufAvail(), ReadBufFree(), ReadPriv(), run(), MythFileBuffer::SeekInternal(), and SetReadInternalMode().

◆ m_lowBuffers

bool MythMediaBuffer::m_lowBuffers { false }

protected

Definition at line 201 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), and WaitForAvail().

◆ m_fileIsMatroska

bool MythMediaBuffer::m_fileIsMatroska { false }

protected

Definition at line 202 of file mythmediabuffer.h.

Referenced by CreateReadAheadBuffer(), and SetBufferSizeFactors().

◆ m_unknownBitrate

bool MythMediaBuffer::m_unknownBitrate { false }

protected

Definition at line 203 of file mythmediabuffer.h.

Referenced by CreateReadAheadBuffer(), and SetBufferSizeFactors().

◆ m_startReadAhead

bool MythMediaBuffer::m_startReadAhead { false }

protected

Definition at line 204 of file mythmediabuffer.h.

Referenced by HLSRingBuffer::HLSRingBuffer(), MythFileBuffer::MythFileBuffer(), MythInteractiveBuffer::MythInteractiveBuffer(), MythStreamingBuffer::MythStreamingBuffer(), and Start().

◆ m_readAheadBuffer

char* MythMediaBuffer::m_readAheadBuffer { nullptr }

protected

Definition at line 205 of file mythmediabuffer.h.

Referenced by CreateReadAheadBuffer(), ReadPriv(), run(), and ~MythMediaBuffer().

◆ m_readAheadRunning

bool MythMediaBuffer::m_readAheadRunning { false }

protected

Definition at line 206 of file mythmediabuffer.h.

Referenced by KillReadAheadThread(), PauseAndWait(), ReadPriv(), run(), MythDVDBuffer::SafeRead(), MythFileBuffer::SeekInternal(), MythInteractiveBuffer::SeekInternal(), MythBDBuffer::SeekInternal(), MythDVDBuffer::SeekInternal(), Start(), WaitForAvail(), WaitForPause(), and WaitForReadsAllowed().

◆ m_reallyRunning

bool MythMediaBuffer::m_reallyRunning { false }

protected

Definition at line 207 of file mythmediabuffer.h.

Referenced by run(), and Start().

◆ m_requestPause

bool MythMediaBuffer::m_requestPause { false }

protected

Definition at line 208 of file mythmediabuffer.h.

Referenced by Pause(), PauseAndWait(), ReadPriv(), run(), Unpause(), WaitForAvail(), WaitForPause(), and WaitForReadsAllowed().

◆ m_paused

bool MythMediaBuffer::m_paused { false }

protected

Definition at line 209 of file mythmediabuffer.h.

Referenced by IsNearEnd(), PauseAndWait(), and WaitForPause().

◆ m_ateof

bool MythMediaBuffer::m_ateof { false }

protected

Definition at line 210 of file mythmediabuffer.h.

Referenced by IsNearEnd(), MythFileBuffer::OpenFile(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), ReadPriv(), ResetReadAhead(), run(), MythInteractiveBuffer::SafeRead(), MythStreamingBuffer::SafeRead(), MythFileBuffer::SeekInternal(), MythStreamingBuffer::SeekInternal(), and WaitForAvail().

◆ m_waitForWrite

bool MythMediaBuffer::m_waitForWrite { false }

protected

Definition at line 211 of file mythmediabuffer.h.

Referenced by run(), and SetWaitForWrite().

◆ m_beingWritten

bool MythMediaBuffer::m_beingWritten { false }

protected

Definition at line 212 of file mythmediabuffer.h.

Referenced by run().

◆ m_readsAllowed

bool MythMediaBuffer::m_readsAllowed { false }

protected

Definition at line 213 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), ResetReadAhead(), run(), MythFileBuffer::SeekInternal(), and WaitForReadsAllowed().

◆ m_readsDesired

bool MythMediaBuffer::m_readsDesired { false }

protected

Definition at line 214 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), ResetReadAhead(), run(), MythFileBuffer::SeekInternal(), and WaitForReadsAllowed().

◆ m_recentSeek

volatile bool MythMediaBuffer::m_recentSeek { true }

protected

Definition at line 215 of file mythmediabuffer.h.

Referenced by ResetReadAhead(), MythFileBuffer::SeekInternal(), and WaitForReadsAllowed().

◆ m_setSwitchToNext

bool MythMediaBuffer::m_setSwitchToNext { false }

protected

Definition at line 216 of file mythmediabuffer.h.

Referenced by IsNearEnd(), MythFileBuffer::OpenFile(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), ReadPriv(), Reset(), ResetReadAhead(), run(), and WaitForAvail().

◆ m_rawBitrate

uint MythMediaBuffer::m_rawBitrate { 8000 }

protected

Definition at line 217 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), IsNearEnd(), MythInteractiveBuffer::OpenFile(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), and UpdateRawBitrate().

◆ m_playSpeed

float MythMediaBuffer::m_playSpeed { 1.0F }

protected

Definition at line 218 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), IsNearEnd(), and UpdatePlaySpeed().

◆ m_fillThreshold

int MythMediaBuffer::m_fillThreshold { 65536 }

protected

Definition at line 219 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), and run().

◆ m_fillMin

int MythMediaBuffer::m_fillMin { -1 }

protected

Definition at line 220 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), run(), MythFileBuffer::SeekInternal(), and WaitForAvail().

◆ m_readBlockSize

int MythMediaBuffer::m_readBlockSize { DEFAULT_CHUNK_SIZE}

protected

Definition at line 221 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), run(), and MythFileBuffer::SeekInternal().

◆ m_wantToRead

int MythMediaBuffer::m_wantToRead { 0 }

protected

Definition at line 222 of file mythmediabuffer.h.

Referenced by ReadPriv(), and WaitForAvail().

◆ m_numFailures

int MythMediaBuffer::m_numFailures { 0 }

protected

Definition at line 223 of file mythmediabuffer.h.

Referenced by MythFileBuffer::OpenFile(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), Reset(), run(), and MythFileBuffer::SafeRead().

◆ m_commsError

bool MythMediaBuffer::m_commsError { false }

protected

Definition at line 224 of file mythmediabuffer.h.

Referenced by GetCommsError(), MythFileBuffer::OpenFile(), MythBDBuffer::OpenFile(), MythDVDBuffer::OpenFile(), ReadPriv(), Reset(), ResetCommsError(), run(), WaitForAvail(), and WaitForReadsAllowed().

◆ m_oldfile

bool MythMediaBuffer::m_oldfile { false }

protected

Definition at line 225 of file mythmediabuffer.h.

Referenced by MythFileBuffer::OpenFile(), MythFileBuffer::SafeRead(), and SetOldFile().

◆ m_liveTVChain

LiveTVChain* MythMediaBuffer::m_liveTVChain { nullptr }

protected

Definition at line 226 of file mythmediabuffer.h.

Referenced by LiveMode(), ReadPriv(), run(), MythFileBuffer::SafeRead(), SetLiveMode(), and WaitForAvail().

◆ m_ignoreLiveEOF

bool MythMediaBuffer::m_ignoreLiveEOF { false }

protected

Definition at line 227 of file mythmediabuffer.h.

Referenced by IgnoreLiveEOF(), and run().

◆ m_readAdjust

long long MythMediaBuffer::m_readAdjust { 0 }

protected

Definition at line 228 of file mythmediabuffer.h.

Referenced by Reset(), MythFileBuffer::SafeRead(), MythFileBuffer::SeekInternal(), MythInteractiveBuffer::SeekInternal(), MythBDBuffer::SeekInternal(), MythDVDBuffer::SeekInternal(), and SetAdjustFilesize().

◆ m_readOffset

int MythMediaBuffer::m_readOffset { 0 }

protected

Definition at line 229 of file mythmediabuffer.h.

Referenced by ReadPriv(), ResetReadAhead(), Seek(), and SetReadInternalMode().

◆ m_readInternalMode

bool MythMediaBuffer::m_readInternalMode { false }

protected

Definition at line 230 of file mythmediabuffer.h.

Referenced by GetRealFileSize(), IsReadInternalMode(), ReadPriv(), ResetReadAhead(), Seek(), SetReadInternalMode(), and WaitForReadsAllowed().

◆ m_bitrateMonitorEnabled

bool MythMediaBuffer::m_bitrateMonitorEnabled { false }

protected

Definition at line 233 of file mythmediabuffer.h.

Referenced by EnableBitrateMonitor(), UpdateDecoderRate(), and UpdateStorageRate().

◆ m_decoderReadLock

QMutex MythMediaBuffer::m_decoderReadLock

protected

Definition at line 234 of file mythmediabuffer.h.

Referenced by UpdateDecoderRate().

◆ m_decoderReads

QMap<std::chrono::milliseconds, uint64_t> MythMediaBuffer::m_decoderReads

protected

Definition at line 235 of file mythmediabuffer.h.

Referenced by UpdateDecoderRate().

◆ m_storageReadLock

QMutex MythMediaBuffer::m_storageReadLock

protected

Definition at line 236 of file mythmediabuffer.h.

Referenced by UpdateStorageRate().

◆ m_storageReads

QMap<std::chrono::milliseconds, uint64_t> MythMediaBuffer::m_storageReads

protected

Definition at line 237 of file mythmediabuffer.h.

Referenced by UpdateStorageRate().

◆ m_generalWait

QWaitCondition MythMediaBuffer::m_generalWait

protected

Condition to signal that the read ahead thread is running.

Definition at line 246 of file mythmediabuffer.h.

Referenced by KillReadAheadThread(), PauseAndWait(), ReadPriv(), Reset(), ResetReadAhead(), run(), Seek(), MythInteractiveBuffer::SeekInternal(), MythFileBuffer::SeekInternal(), MythDVDStream::SeekInternal(), MythBDBuffer::SeekInternal(), MythDVDBuffer::SeekInternal(), SetReadInternalMode(), Start(), StartReads(), StopReads(), Unpause(), WaitForAvail(), WaitForPause(), and WaitForReadsAllowed().

◆ m_bitrateInitialized

bool MythMediaBuffer::m_bitrateInitialized { false }

private

Definition at line 249 of file mythmediabuffer.h.

Referenced by CalcReadAheadThresh(), and UpdateRawBitrate().

The documentation for this class was generated from the following files:

mythtv/libs/libmythtv/io/mythmediabuffer.h
mythtv/libs/libmythtv/io/mythmediabuffer.cpp

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~MythMediaBuffer()

◆ MythMediaBuffer()

Member Function Documentation

◆ Create()

◆ GetType()

◆ BitrateToString()

◆ AVFormatInitNetwork()

◆ SetOldFile()

◆ UpdateRawBitrate()

◆ UpdatePlaySpeed()

◆ EnableBitrateMonitor()

◆ SetBufferSizeFactors()

◆ SetWaitForWrite()

◆ GetSafeFilename()

◆ GetFilename()

◆ GetSubtitleFilename()

◆ GetLastError()

◆ GetCommsError()

◆ ResetCommsError()

◆ GetStopReads()

◆ GetDecoderRate()

◆ GetStorageRate()

◆ GetAvailableBuffer()

◆ GetBufferSize()

◆ IsNearEnd()

◆ GetWritePosition()

◆ GetRealFileSize()

◆ IsDisc()

◆ IsDVD()

◆ IsBD()

◆ DVD() [1/2]

◆ DVD() [2/2]

◆ BD() [1/2]

◆ BD() [2/2]

◆ Read()

◆ Peek() [1/2]

◆ Peek() [2/2]

◆ Reset()

◆ Pause()

◆ Unpause()

◆ WaitForPause()

◆ Start()

◆ StopReads()

◆ StartReads()

◆ Seek()

◆ SetAdjustFilesize()

◆ GetReadBufAvail()

◆ SetReadInternalMode()

◆ IsReadInternalMode()

◆ LiveMode()

◆ SetLiveMode()

◆ IgnoreLiveEOF()

◆ Write()

◆ IsIOBound()

◆ WriterFlush()

◆ Sync()

◆ WriterSeek()

◆ WriterSetBlocking()

◆ GetReadPosition()

◆ IsOpen()

◆ IsStreamed()

◆ IsSeekingAllowed()

◆ IsBookmarkAllowed()

◆ BestBufferSize()

◆ StartFromBeginning()

◆ IgnoreWaitStates()

◆ IsInMenu()

◆ IsInStillFrame()

◆ IsInDiscMenuOrStillFrame()

◆ HandleAction()