#include <libmythtv/videobuffers.h>

Collaboration diagram for VideoBuffers:

Public Member Functions
	VideoBuffers ()=default

	~VideoBuffers ()=default

void	Init (uint NumDecode, uint NeedFree, uint NeedprebufferNormal, uint NeedPrebufferSmall)
	Creates buffers and sets various buffer management parameters. More...

bool	CreateBuffers (VideoFrameType Type, const VideoFrameTypes *RenderFormats, QSize Size, uint NeedFree, uint NeedprebufferNormal, uint NeedPrebufferSmall, int MaxReferenceFrames=16)

bool	CreateBuffers (VideoFrameType Type, int Width, int Height, const VideoFrameTypes *RenderFormats)

void	SetDeinterlacing (MythDeintType Single, MythDeintType Double, MythCodecID CodecID)

void	Reset (void)

void	DiscardFrames (bool NextFrameIsKeyFrame)

void	ClearAfterSeek (void)
	Clear used frames after seeking. More...

void	SetPrebuffering (bool Normal)

MythVideoFrame *	GetNextFreeFrame (BufferType EnqueueTo=kVideoBuffer_limbo)
	Gets a frame from available buffers list. More...

void	ReleaseFrame (MythVideoFrame *Frame)

void	DeLimboFrame (MythVideoFrame *Frame)

void	StartDisplayingFrame (void)

void	DoneDisplayingFrame (MythVideoFrame *Frame)

void	DiscardFrame (MythVideoFrame *Frame)

void	DiscardPauseFrames (void)

bool	DiscardAndRecreate (MythCodecID CodecID, QSize VideoDim, int References)
	Discard all buffers and recreate. More...

MythVideoFrame *	At (uint FrameNum)

MythVideoFrame *	Dequeue (BufferType Type)

MythVideoFrame *	Head (BufferType Type)

MythVideoFrame *	Tail (BufferType Type)

void	Enqueue (BufferType Type, MythVideoFrame *Frame)

void	SafeEnqueue (BufferType Type, MythVideoFrame *Frame)

void	Remove (BufferType Type, MythVideoFrame *Frame)

frame_queue_t::iterator	BeginLock (BufferType Type)
	Lock the video buffers. More...

frame_queue_t::iterator	End (BufferType Type)

void	EndLock ()

uint	Size (BufferType Type) const

bool	Contains (BufferType Type, MythVideoFrame *Frame) const

MythVideoFrame *	GetLastDecodedFrame (void)

MythVideoFrame *	GetLastShownFrame (void)

uint	ValidVideoFrames (void) const

uint	FreeVideoFrames (void) const

bool	EnoughFreeFrames (void) const

bool	EnoughDecodedFrames (void) const

const MythVideoFrame *	At (uint FrameNum) const

const MythVideoFrame *	GetLastDecodedFrame (void) const

const MythVideoFrame *	GetLastShownFrame (void) const

uint	Size (void) const

QString	GetStatus (uint Num=0) const

Static Public Member Functions
static uint	GetNumBuffers (int PixelFormat, int MaxReferenceFrames=16, bool Decoder=false)

static bool	ReinitBuffer (MythVideoFrame *Frame, VideoFrameType Type, MythCodecID CodecID, int Width, int Height)

Private Member Functions
frame_queue_t *	Queue (BufferType Type)

const frame_queue_t *	Queue (BufferType Type) const

MythVideoFrame *	GetNextFreeFrameInternal (BufferType EnqueueTo)

Static Private Member Functions
static void	SetDeinterlacingFlags (MythVideoFrame &Frame, MythDeintType Single, MythDeintType Double, MythCodecID CodecID)
	Set the appropriate flags for single and double rate deinterlacing. More...

Private Attributes
frame_queue_t	m_available

frame_queue_t	m_used

frame_queue_t	m_limbo

frame_queue_t	m_pause

frame_queue_t	m_displayed

frame_queue_t	m_decode

frame_queue_t	m_finished

vbuffer_map_t	m_vbufferMap

frame_vector_t	m_buffers

const VideoFrameTypes *	m_renderFormats { nullptr }

uint	m_needFreeFrames { 0 }

uint	m_needPrebufferFrames { 0 }

uint	m_needPrebufferFramesNormal { 0 }

uint	m_needPrebufferFramesSmall { 0 }

uint	m_rpos { 0 }

uint	m_vpos { 0 }

QRecursiveMutex	m_globalLock

Detailed Description

This class creates tracks the state of the buffers used by various VideoOutput derived classes.

The states available for a buffer are: available, limbo, used, process, and displayed.

The two most important states are available and used. Used is implemented as a FIFO, and is used to buffer frames ready for display. A decoder may decode frames out of order but must add them to the used queue in order. The available buffers are buffers that are ready to be used by the decoder.

Generally a buffer leaves the available state via GetNextFreeFrame(bool,bool,BufferType) and enters the limbo state. It then leaves the limbo state via ReleaseFrame(VideoFrame*) and enters the used state. Then it leaves the used state via DoneDisplayingFrame() and enters the available state.

At any point, DiscardFrame(VideoFrame*) can be called to remove the frame from the current state and add it to the available list.

However, there are two additional states available, these are currently used by VideoOutputXv for XvMC support. These are the process and displayed state. The process state simply indicates that the frame has been picked up in the VideoOutput::ProcessFrame() call, but VideoOutput::Show() has not yet used the frame. This is needed because a frame other than a used frame is being held by VideoOutput and we don't want to lose it if the stream is reset. The displayed state indicates that DoneDisplayingFrame() has been called for the frame, but it cannot yet be added to available because it is still being displayed. VideoOutputXv calls DiscardFrame(VideoFrame*) on the frames no longer being displayed at the end of the next DoneDisplayingFrame(), finally adding them to available.

The only method that returns with a lock held on the VideoBuffers object itself, preventing anyone else from using the VideoBuffers class, inluding to unlocking frames, is the begin_lock(BufferType). This method is to be used with extreme caution, in particular one should not attempt to acquire any locks before end_lock() is called.

There are also frame inheritence tracking functions, these are used by VideoOutputXv to avoid throwing away displayed frames too early. See videoout_xv.cpp for their use.

released = used + finished + displayed + pause total = available + limbo + released released_and_in_use_by_decoder = decode

available - frames not in use by decoder or display limbo - frames in use by decoder but not released for display decode - frames in use by decoder and released for display used - frames released for display but not displayed or paused displayed - frames displayed but still used as a reference frame pause - frames used for pause finished - frames that are finished displaying but still in use by decoder

NOTE: All queues are mutually exclusive except "decode" which tracks frames that have been released but still in use by the decoder. If a frame has finished being processed/displayed but is still in use by the decoder (in the decode queue) then it is placed in the finished queue until the decoder is no longer using it (not in the decode queue).

See also: VideoOutput

Definition at line 38 of file videobuffers.h.

Constructor & Destructor Documentation

◆ VideoBuffers()

VideoBuffers::VideoBuffers ( )

default

◆ ~VideoBuffers()

VideoBuffers::~VideoBuffers ( )

default

Member Function Documentation

◆ GetNumBuffers()

uint VideoBuffers::GetNumBuffers	(	int	PixelFormat,
		int	MaxReferenceFrames = `16`,
		bool	Decoder = `false`
	)

static

Definition at line 136 of file videobuffers.cpp.

Referenced by CreateBuffers(), VideoOutputD3D::CreateBuffers(), MythVideoOutputGPU::CreateBuffers(), DiscardAndRecreate(), MythVideoOutputNull::Init(), MythVAAPIContext::InitialiseContext(), and MythVAAPIContext::InitialiseContext2().

◆ Init()

void VideoBuffers::Init	(	uint	NumDecode,
		uint	NeedFree,
		uint	NeedPrebufferNormal,
		uint	NeedPrebufferSmall
	)

Creates buffers and sets various buffer management parameters.

Parameters

NumDecode	number of buffers to allocate for normal use
NeedFree	maximum number of buffers needed in display and pause
NeedPrebufferNormal	number buffers you can put in used or limbo normally
NeedPrebufferSmall	number of buffers you can put in used or limbo after SetPrebuffering(false) has been called.

Definition at line 176 of file videobuffers.cpp.

Referenced by CreateBuffers(), VideoOutputD3D::CreateBuffers(), MythVideoOutputGPU::CreateBuffers(), DiscardAndRecreate(), and MythVideoOutputNull::Init().

◆ CreateBuffers() [1/2]

bool VideoBuffers::CreateBuffers	(	VideoFrameType	Type,
		const VideoFrameTypes *	RenderFormats,
		QSize	Size,
		uint	NeedFree,
		uint	NeedprebufferNormal,
		uint	NeedPrebufferSmall,
		int	MaxReferenceFrames = `16`
	)

Definition at line 941 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::CreateBuffers(), DiscardAndRecreate(), MythVideoOutputNull::Init(), VideoOutputD3D::InitBuffers(), and MythVideoOutputNull::InputChanged().

◆ CreateBuffers() [2/2]

bool VideoBuffers::CreateBuffers	(	VideoFrameType	Type,
		int	Width,
		int	Height,
		const VideoFrameTypes *	RenderFormats
	)

Definition at line 950 of file videobuffers.cpp.

◆ ReinitBuffer()

bool VideoBuffers::ReinitBuffer	(	MythVideoFrame *	Frame,
		VideoFrameType	Type,
		MythCodecID	CodecID,
		int	Width,
		int	Height
	)

static

Definition at line 982 of file videobuffers.cpp.

Referenced by get_avf_buffer(), MythMMALContext::GetBuffer(), MythV4L2M2MContext::GetBuffer(), and MythCodecContext::RetrieveHWFrame().

◆ SetDeinterlacing()

void VideoBuffers::SetDeinterlacing	(	MythDeintType	Single,
		MythDeintType	Double,
		MythCodecID	CodecID
	)

Definition at line 200 of file videobuffers.cpp.

Referenced by Init(), MythVideoOutputNull::SetDeinterlacing(), and MythVideoOutput::SetDeinterlacing().

◆ Reset()

void VideoBuffers::Reset ( void )

Resets the class so that Init may be called again.

Definition at line 265 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::DestroyBuffers(), DiscardAndRecreate(), Init(), and VideoOutputD3D::TearDown().

◆ DiscardFrames()

void VideoBuffers::DiscardFrames ( bool NextFrameIsKeyFrame )

Mark all used frames as ready to be reused, this is for seek.

Definition at line 809 of file videobuffers.cpp.

Referenced by MythVideoOutput::DiscardFrames(), GetNextFreeFrame(), and VideoOutputD3D::TearDown().

◆ ClearAfterSeek()

void VideoBuffers::ClearAfterSeek ( void )

Clear used frames after seeking.

Note: The use of this function after seeking is a little dubious as the decoder is often not paused. In extreme cases every video buffer has already been requested by the decoder by the time this function is called. Should probably be repurposed as ClearBeforeSeek...

Definition at line 896 of file videobuffers.cpp.

Referenced by MythVideoOutput::ClearAfterSeek().

◆ SetPrebuffering()

void VideoBuffers::SetPrebuffering ( bool normal )

Sets prebuffering state to normal, or small.

Definition at line 282 of file videobuffers.cpp.

Referenced by MythVideoOutput::SetPrebuffering().

◆ GetNextFreeFrame()

MythVideoFrame * VideoBuffers::GetNextFreeFrame ( BufferType EnqueueTo = kVideoBuffer_limbo )

Gets a frame from available buffers list.

Parameters

EnqueueTo Put new frame in some state other than limbo.

Definition at line 320 of file videobuffers.cpp.

Referenced by MythVideoOutput::GetNextFreeFrame().

◆ ReleaseFrame()

void VideoBuffers::ReleaseFrame ( MythVideoFrame * Frame )

Frame is ready to be for filtering or OSD application. Removes frame from limbo and adds it to used queue.

Parameters

frame Frame to move to used.

Definition at line 361 of file videobuffers.cpp.

Referenced by MythVideoOutput::ReleaseFrame().

◆ DeLimboFrame()

void VideoBuffers::DeLimboFrame ( MythVideoFrame * Frame )

If the frame is still in the limbo state it is added to the available queue.

Parameters

frame Frame to move to used.

Definition at line 378 of file videobuffers.cpp.

Referenced by MythVideoOutput::DeLimboFrame().

◆ StartDisplayingFrame()

void VideoBuffers::StartDisplayingFrame ( void )

Sets rpos to index of videoframe at head of used queue.

Definition at line 408 of file videobuffers.cpp.

Referenced by MythVideoOutput::StartDisplayingFrame().

◆ DoneDisplayingFrame()

void VideoBuffers::DoneDisplayingFrame ( MythVideoFrame * Frame )

Removes frame from used queue and adds it to the available list.

Definition at line 418 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::DoneDisplayingFrame(), and MythVideoOutput::DoneDisplayingFrame().

◆ DiscardFrame()

void VideoBuffers::DiscardFrame ( MythVideoFrame * Frame )

Frame is ready to be reused by decoder. Add frame to available list, remove from any other list.

Definition at line 451 of file videobuffers.cpp.

Referenced by MythVideoOutput::DiscardFrame().

◆ DiscardPauseFrames()

void VideoBuffers::DiscardPauseFrames ( void )

Definition at line 461 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::DiscardFrames().

◆ DiscardAndRecreate()

bool VideoBuffers::DiscardAndRecreate	(	MythCodecID	CodecID,
		QSize	VideoDim,
		int	References
	)

Discard all buffers and recreate.

This is used to 'atomically' recreate VideoBuffers that may use hardware buffer references. It is only used by MythVideoOutputOpenGL (other MythVideoOutput classes currently do not support hardware frames).

Definition at line 483 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::InputChanged().

◆ At() [1/2]

MythVideoFrame * VideoBuffers::At ( uint FrameNum )

Definition at line 629 of file videobuffers.cpp.

Referenced by ClearAfterSeek(), DiscardAndRecreate(), DiscardFrames(), GetLastDecodedFrame(), GetLastShownFrame(), and Init().

◆ Dequeue()

MythVideoFrame * VideoBuffers::Dequeue ( BufferType Type )

Definition at line 639 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::DoneDisplayingFrame(), and MythVideoOutputGPU::UpdatePauseFrame().

◆ Head()

MythVideoFrame * VideoBuffers::Head ( BufferType Type )

Definition at line 648 of file videobuffers.cpp.

Referenced by VideoOutputD3D::UpdatePauseFrame(), and MythVideoOutputGPU::UpdatePauseFrame().

◆ Tail()

MythVideoFrame * VideoBuffers::Tail ( BufferType Type )

Definition at line 659 of file videobuffers.cpp.

Referenced by DiscardAndRecreate(), DiscardPauseFrames(), and MythVideoOutputGPU::RenderFrame().

◆ Enqueue()

void VideoBuffers::Enqueue	(	BufferType	Type,
		MythVideoFrame *	Frame
	)

Definition at line 670 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::DoneDisplayingFrame(), DoneDisplayingFrame(), Init(), and SafeEnqueue().

◆ SafeEnqueue()

void VideoBuffers::SafeEnqueue	(	BufferType	Type,
		MythVideoFrame *	Frame
	)

Definition at line 707 of file videobuffers.cpp.

Referenced by DeLimboFrame(), DiscardAndRecreate(), DiscardFrame(), DiscardFrames(), DiscardPauseFrames(), and GetNextFreeFrameInternal().

◆ Remove()

void VideoBuffers::Remove	(	BufferType	Type,
		MythVideoFrame *	Frame
	)

Definition at line 685 of file videobuffers.cpp.

Referenced by DiscardAndRecreate(), DiscardFrames(), MythVideoOutputGPU::DoneDisplayingFrame(), DoneDisplayingFrame(), and SafeEnqueue().

◆ BeginLock()

frame_queue_t::iterator VideoBuffers::BeginLock ( BufferType Type )

Lock the video buffers.

Note: Use with caution. Holding this lock while releasing hardware buffers will almost certainly lead to deadlocks.

Definition at line 721 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::DoneDisplayingFrame(), and MythVideoOutputGPU::UpdatePauseFrame().

◆ End()

frame_queue_t::iterator VideoBuffers::End ( BufferType Type )

Definition at line 735 of file videobuffers.cpp.

◆ EndLock()

void VideoBuffers::EndLock ( )

Definition at line 730 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::DoneDisplayingFrame(), and MythVideoOutputGPU::UpdatePauseFrame().

◆ Size() [1/2]

uint VideoBuffers::Size ( BufferType Type ) const

Definition at line 742 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::DoneDisplayingFrame(), and MythVideoOutputGPU::RenderFrame().

◆ Contains()

bool VideoBuffers::Contains	(	BufferType	Type,
		MythVideoFrame *	Frame
	)		const

Definition at line 751 of file videobuffers.cpp.

Referenced by MythVideoOutputGPU::DoneDisplayingFrame().

◆ GetLastDecodedFrame() [1/2]

MythVideoFrame * VideoBuffers::GetLastDecodedFrame ( void )

Definition at line 760 of file videobuffers.cpp.

Referenced by MythVideoOutput::GetLastDecodedFrame().

◆ GetLastShownFrame() [1/2]

MythVideoFrame * VideoBuffers::GetLastShownFrame ( void )

Definition at line 765 of file videobuffers.cpp.

Referenced by MythVideoOutput::GetLastShownFrame().

◆ ValidVideoFrames()

uint VideoBuffers::ValidVideoFrames ( void ) const

Definition at line 770 of file videobuffers.cpp.

Referenced by MythVideoOutput::ValidVideoFrames().

◆ FreeVideoFrames()

uint VideoBuffers::FreeVideoFrames ( void ) const

Definition at line 775 of file videobuffers.cpp.

Referenced by MythVideoOutput::FreeVideoFrames().

◆ EnoughFreeFrames()

bool VideoBuffers::EnoughFreeFrames ( void ) const

Definition at line 780 of file videobuffers.cpp.

Referenced by MythVideoOutput::EnoughFreeFrames().

◆ EnoughDecodedFrames()

bool VideoBuffers::EnoughDecodedFrames ( void ) const

Definition at line 785 of file videobuffers.cpp.

Referenced by MythVideoOutput::EnoughDecodedFrames().

◆ At() [2/2]

const MythVideoFrame * VideoBuffers::At ( uint FrameNum ) const

Definition at line 634 of file videobuffers.cpp.

◆ GetLastDecodedFrame() [2/2]

const MythVideoFrame * VideoBuffers::GetLastDecodedFrame ( void ) const

Definition at line 790 of file videobuffers.cpp.

◆ GetLastShownFrame() [2/2]

const MythVideoFrame * VideoBuffers::GetLastShownFrame ( void ) const

Definition at line 795 of file videobuffers.cpp.

◆ Size() [2/2]

uint VideoBuffers::Size ( void ) const

Definition at line 800 of file videobuffers.cpp.

Referenced by ClearAfterSeek(), CreateBuffers(), DiscardAndRecreate(), DiscardFrames(), DiscardPauseFrames(), EnoughDecodedFrames(), EnoughFreeFrames(), FreeVideoFrames(), GetStatus(), and ValidVideoFrames().

◆ GetStatus()

QString VideoBuffers::GetStatus ( uint Num = 0 ) const

Definition at line 1012 of file videobuffers.cpp.

Referenced by DiscardAndRecreate(), MythVideoOutputGPU::DiscardFrames(), DiscardFrames(), MythVideoOutput::GetFrameStatus(), and GetNextFreeFrameInternal().

◆ Queue() [1/2]

frame_queue_t * VideoBuffers::Queue ( BufferType Type )

private

Definition at line 587 of file videobuffers.cpp.

Referenced by BeginLock(), Contains(), Dequeue(), End(), Enqueue(), Head(), Size(), and Tail().

◆ Queue() [2/2]

const frame_queue_t * VideoBuffers::Queue ( BufferType Type ) const

private

Definition at line 608 of file videobuffers.cpp.

◆ GetNextFreeFrameInternal()

MythVideoFrame * VideoBuffers::GetNextFreeFrameInternal ( BufferType EnqueueTo )

private

Definition at line 288 of file videobuffers.cpp.

Referenced by GetNextFreeFrame().

◆ SetDeinterlacingFlags()

void VideoBuffers::SetDeinterlacingFlags	(	MythVideoFrame &	Frame,
		MythDeintType	Single,
		MythDeintType	Double,
		MythCodecID	CodecID
	)

staticprivate

Set the appropriate flags for single and double rate deinterlacing.

Note: Double rate support is determined by the VideoOutput class and must be set appropriately; Driver deinterlacers are only available for hardware frames with the exception of NVDEC and VTB which can use shaders.; Shader and CPU deinterlacers are disabled for hardware frames (except for shaders with NVDEC and VTB)

Todo:: Handling of decoder deinterlacing with NVDEC

Definition at line 215 of file videobuffers.cpp.

Referenced by ReinitBuffer(), and SetDeinterlacing().

Member Data Documentation

◆ m_available

frame_queue_t VideoBuffers::m_available

private

Definition at line 103 of file videobuffers.h.

Referenced by BeginLock(), ClearAfterSeek(), DiscardAndRecreate(), DiscardFrames(), End(), GetNextFreeFrame(), GetNextFreeFrameInternal(), GetStatus(), Queue(), Remove(), and Reset().

◆ m_used

frame_queue_t VideoBuffers::m_used

private

Definition at line 104 of file videobuffers.h.

Referenced by ClearAfterSeek(), DiscardAndRecreate(), DiscardFrames(), DoneDisplayingFrame(), GetNextFreeFrame(), GetNextFreeFrameInternal(), GetStatus(), Queue(), ReleaseFrame(), Remove(), Reset(), and StartDisplayingFrame().

◆ m_limbo

frame_queue_t VideoBuffers::m_limbo

private

Definition at line 105 of file videobuffers.h.

Referenced by DeLimboFrame(), DiscardAndRecreate(), DiscardFrames(), GetNextFreeFrame(), GetStatus(), Queue(), ReleaseFrame(), Remove(), and Reset().

◆ m_pause

frame_queue_t VideoBuffers::m_pause

private

Definition at line 106 of file videobuffers.h.

Referenced by DiscardAndRecreate(), DiscardFrames(), GetNextFreeFrame(), GetStatus(), Queue(), Remove(), and Reset().

◆ m_displayed

frame_queue_t VideoBuffers::m_displayed

private

Definition at line 107 of file videobuffers.h.

Referenced by DiscardAndRecreate(), DiscardFrames(), GetNextFreeFrame(), GetStatus(), Queue(), Remove(), and Reset().

◆ m_decode

frame_queue_t VideoBuffers::m_decode

private

Definition at line 108 of file videobuffers.h.

Referenced by ClearAfterSeek(), DeLimboFrame(), DiscardAndRecreate(), DiscardFrames(), DoneDisplayingFrame(), GetNextFreeFrame(), GetNextFreeFrameInternal(), GetStatus(), Queue(), ReleaseFrame(), Remove(), and Reset().

◆ m_finished

frame_queue_t VideoBuffers::m_finished

private

Definition at line 109 of file videobuffers.h.

Referenced by DiscardAndRecreate(), DiscardFrames(), DoneDisplayingFrame(), GetNextFreeFrame(), GetStatus(), Queue(), Remove(), and Reset().

◆ m_vbufferMap

vbuffer_map_t VideoBuffers::m_vbufferMap

private

Definition at line 110 of file videobuffers.h.

Referenced by ClearAfterSeek(), Init(), ReleaseFrame(), Reset(), and StartDisplayingFrame().

◆ m_buffers

frame_vector_t VideoBuffers::m_buffers

private

Definition at line 111 of file videobuffers.h.

Referenced by At(), CreateBuffers(), Init(), SetDeinterlacing(), and Size().

◆ m_renderFormats

const VideoFrameTypes* VideoBuffers::m_renderFormats { nullptr }

private

Definition at line 112 of file videobuffers.h.

Referenced by CreateBuffers(), and DiscardAndRecreate().

◆ m_needFreeFrames

uint VideoBuffers::m_needFreeFrames { 0 }

private

Definition at line 114 of file videobuffers.h.

Referenced by EnoughFreeFrames(), and Init().

◆ m_needPrebufferFrames

uint VideoBuffers::m_needPrebufferFrames { 0 }

private

Definition at line 115 of file videobuffers.h.

Referenced by EnoughDecodedFrames(), Init(), and SetPrebuffering().

◆ m_needPrebufferFramesNormal

uint VideoBuffers::m_needPrebufferFramesNormal { 0 }

private

Definition at line 116 of file videobuffers.h.

Referenced by Init(), and SetPrebuffering().

◆ m_needPrebufferFramesSmall

uint VideoBuffers::m_needPrebufferFramesSmall { 0 }

private

Definition at line 117 of file videobuffers.h.

Referenced by Init(), and SetPrebuffering().

◆ m_rpos

uint VideoBuffers::m_rpos { 0 }

private

Definition at line 118 of file videobuffers.h.

Referenced by ClearAfterSeek(), GetLastShownFrame(), and StartDisplayingFrame().

◆ m_vpos

uint VideoBuffers::m_vpos { 0 }

private

Definition at line 119 of file videobuffers.h.

Referenced by ClearAfterSeek(), GetLastDecodedFrame(), and ReleaseFrame().

◆ m_globalLock

QRecursiveMutex VideoBuffers::m_globalLock

mutableprivate

Definition at line 120 of file videobuffers.h.

Referenced by BeginLock(), ClearAfterSeek(), Contains(), DeLimboFrame(), Dequeue(), DiscardAndRecreate(), DiscardFrame(), DiscardFrames(), DiscardPauseFrames(), DoneDisplayingFrame(), End(), EndLock(), Enqueue(), GetNextFreeFrameInternal(), GetStatus(), Head(), Init(), Queue(), ReleaseFrame(), Remove(), Reset(), SafeEnqueue(), SetDeinterlacing(), SetPrebuffering(), Size(), StartDisplayingFrame(), and Tail().

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

mythtv/libs/libmythtv/videobuffers.h
mythtv/libs/libmythtv/videobuffers.cpp

Public Member Functions

Static Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ VideoBuffers()

◆ ~VideoBuffers()

Member Function Documentation

◆ GetNumBuffers()

◆ Init()

◆ CreateBuffers() [1/2]

◆ CreateBuffers() [2/2]

◆ ReinitBuffer()

◆ SetDeinterlacing()

◆ Reset()

◆ DiscardFrames()

◆ ClearAfterSeek()

◆ SetPrebuffering()

◆ GetNextFreeFrame()

◆ ReleaseFrame()

◆ DeLimboFrame()

◆ StartDisplayingFrame()

◆ DoneDisplayingFrame()

◆ DiscardFrame()

◆ DiscardPauseFrames()

◆ DiscardAndRecreate()

◆ At() [1/2]

◆ Dequeue()

◆ Head()

◆ Tail()

◆ Enqueue()

◆ SafeEnqueue()

◆ Remove()

◆ BeginLock()

◆ End()

◆ EndLock()

◆ Size() [1/2]

◆ Contains()

◆ GetLastDecodedFrame() [1/2]

◆ GetLastShownFrame() [1/2]

◆ ValidVideoFrames()

◆ FreeVideoFrames()

◆ EnoughFreeFrames()

◆ EnoughDecodedFrames()

◆ At() [2/2]

◆ GetLastDecodedFrame() [2/2]

◆ GetLastShownFrame() [2/2]

◆ Size() [2/2]

◆ GetStatus()

◆ Queue() [1/2]

◆ Queue() [2/2]

◆ GetNextFreeFrameInternal()

◆ SetDeinterlacingFlags()

Member Data Documentation

◆ m_available

◆ m_used

◆ m_limbo

◆ m_pause

◆ m_displayed

◆ m_decode

◆ m_finished

◆ m_vbufferMap

◆ m_buffers

◆ m_renderFormats

◆ m_needFreeFrames

◆ m_needPrebufferFrames

◆ m_needPrebufferFramesNormal

◆ m_needPrebufferFramesSmall

◆ m_rpos

◆ m_vpos

◆ m_globalLock