DRM Buffer. More...

#include <drmbuffer.h>

Public Member Functions
	cDrmBuffer (void)
	Create a new drm buffer.

	cDrmBuffer (cDrmBuffer *src)
	Create a new drm buffer.

	cDrmBuffer (int, uint32_t, uint32_t, uint32_t, struct gbm_bo *)
	Create a new drm buffer.

void	Setup (int, uint32_t, uint32_t, uint32_t, AVDRMFrameDescriptor *, bool)
	Setup the buffer.

void	Destroy (void)
	Clear and destroy the buffer object and its parameters.

void	FillBlack (void)
	Color the buffer black.

uint32_t	Width (void)

void	SetWidth (uint32_t width)

uint32_t	Height (void)

void	SetHeight (uint32_t height)

uint32_t	PixFmt (void)

void	SetPixFmt (uint32_t pixFmt)

bool	IsDirty (void)

void	MarkClean (void)

void	MarkDirty (void)

bool	IsPresentationPending (void)

void	SetPresentationPending (bool pending)

int	Id (void)

void	SetId (int id)

void	SetFdDrm (int fdDrm)

int	NumPlanes (void)

void	SetNumPlanes (int numPlanes)

int	DmaBufHandle (void)

void	SetDmaBufHandle (uint32_t fd)

void	SetNumObjects (int numObjects)

void	SetObjectIndex (int idx, uint32_t objIdx)

uint8_t *	Plane (int idx)

uint32_t	PrimeHandle (int idx)

uint32_t *	PrimeHandle (void)

void	SetHandle (int idx, uint32_t handle)

uint32_t	Offset (int idx)

uint32_t *	Offset (void)

void	SetOffset (int idx, uint32_t offset)

uint32_t	Pitch (int idx)

uint32_t *	Pitch (void)

void	SetPitch (int idx, uint32_t pitch)

uint32_t	Size (int idx)

uint32_t *	Size (void)

void	SetSize (int idx, uint32_t size)

void	SetDestroyAfterUse (bool val)

void	PresentationFinished (void)
	The presentation of this buffer has finished.

void	SetSizeOnScreen (int x, int y, int w, int h)

cRect	GetScreenRect (void)

Public Attributes
AVFrame *	frame = nullptr
	associated AVFrame

Private Attributes
uint32_t	m_width
	buffer width

uint32_t	m_height
	buffer height

uint32_t	m_pixFmt
	buffer pixel format

cRect	m_rectOnScreen
	dimensions on screen - set at pageflip, needed for grab

bool	m_dirty
	true, if the buffer is dirty (it was written to)

uint32_t	m_fbId
	framebuffer id

int	m_drmDeviceFd
	drm device file descriptor

int	m_numPlanes
	number of planes in the buffer

int	m_dmaBufHandle [4]
	DMA-BUF file descriptor.

int	m_numObjects
	number of prime objects in the buffer

int	m_objIdx [4]
	index of the objects

uint32_t	m_objectPrimeHandle [4]
	primedata objects prime handles (count is numObjects, index is objIdx)

uint8_t *	m_pPlane [4]
	array of the plane data

uint32_t	m_planePrimeHandle [4]
	array of the plane handles

uint32_t	m_offset [4]
	array of the plane offset

uint32_t	m_pitch [4]
	array of the plane pitch

uint32_t	m_size [4] {0}
	array of the plane size

bool	m_presentationPending = false
	true, if buffer presentation is pending

bool	m_destroyAfterUse = false
	true, if buffer should be destroyed after use

bool	m_closeHandleOnDestroy
	true, if DMA-BUF handle should be closed on destroy

struct gbm_bo *	m_pBo
	pointer to the gbm buffer object

Detailed Description

DRM Buffer.

Definition at line 46 of file drmbuffer.h.

Constructor & Destructor Documentation

◆ cDrmBuffer() [1/3]

cDrmBuffer::cDrmBuffer ( void )

Create a new drm buffer.

as an empty buffer

Definition at line 43 of file drmbuffer.cpp.

References m_dirty, m_dmaBufHandle, m_numPlanes, and m_pPlane.

◆ cDrmBuffer() [2/3]

cDrmBuffer::cDrmBuffer ( cDrmBuffer * src )

Create a new drm buffer.

cloned from an existing cDrmBuffer

Parameters

src	src buffer to be cloned

Definition at line 61 of file drmbuffer.cpp.

References L_GRAB, LOGDEBUG2, LOGERROR, m_dirty, m_dmaBufHandle, m_numObjects, m_numPlanes, m_objIdx, m_offset, m_pitch, m_planePrimeHandle, m_pPlane, m_size, and plane.

◆ cDrmBuffer() [3/3]

cDrmBuffer::cDrmBuffer	(	int	fdDrm,
		uint32_t	width,
		uint32_t	height,
		uint32_t	pixFmt,
		struct gbm_bo *	bo
	)

Create a new drm buffer.

from a gbm buffer object

Parameters

fdDrm	drm file descriptor
width	buffer width
height	buffer height
pixFmt	buffer pixel format
bo	pointer to gbm buffer object

Definition at line 135 of file drmbuffer.cpp.

References m_dirty, m_numPlanes, m_offset, m_pitch, m_planePrimeHandle, m_pPlane, and m_size.

Member Function Documentation

◆ Destroy()

void cDrmBuffer::Destroy ( void )

Clear and destroy the buffer object and its parameters.

Definition at line 157 of file drmbuffer.cpp.

References L_DRM, LOGDEBUG2, LOGERROR, m_closeHandleOnDestroy, m_destroyAfterUse, m_dirty, m_dmaBufHandle, m_drmDeviceFd, m_fbId, m_height, m_numObjects, m_numPlanes, m_objectPrimeHandle, m_objIdx, m_offset, m_pitch, m_planePrimeHandle, m_pPlane, m_size, and m_width.

Referenced by cVideoRender::DisplayBlackFrame(), cVideoRender::Exit(), and PresentationFinished().

◆ DmaBufHandle()

int cDrmBuffer::DmaBufHandle ( void )

inline

Definition at line 77 of file drmbuffer.h.

References m_dmaBufHandle.

◆ FillBlack()

void cDrmBuffer::FillBlack ( void )

Color the buffer black.

Definition at line 393 of file drmbuffer.cpp.

References m_height, m_pPlane, and m_width.

Referenced by cVideoRender::Init().

◆ GetScreenRect()

cRect cDrmBuffer::GetScreenRect ( void )

inline

Definition at line 98 of file drmbuffer.h.

References m_rectOnScreen.

◆ Height()

uint32_t cDrmBuffer::Height ( void )

inline

Definition at line 61 of file drmbuffer.h.

References m_height.

Referenced by cVideoRender::Init(), cVideoRender::OsdClear(), and cVideoRender::SetOsdBuffer().

◆ Id()

int cDrmBuffer::Id ( void )

inline

Definition at line 72 of file drmbuffer.h.

References m_fbId.

Referenced by cVideoRender::Init(), and cVideoRender::SetOsdBuffer().

◆ IsDirty()

bool cDrmBuffer::IsDirty ( void )

inline

Definition at line 66 of file drmbuffer.h.

References m_dirty.

Referenced by cVideoRender::DisplayFrame(), and cVideoRender::SetOsdBuffer().

◆ IsPresentationPending()

bool cDrmBuffer::IsPresentationPending ( void )

inline

Definition at line 69 of file drmbuffer.h.

References m_presentationPending.

◆ MarkClean()

void cDrmBuffer::MarkClean ( void )

inline

Definition at line 67 of file drmbuffer.h.

References m_dirty.

Referenced by cVideoRender::SetOsdBuffer().

◆ MarkDirty()

void cDrmBuffer::MarkDirty ( void )

inline

Definition at line 68 of file drmbuffer.h.

References m_dirty.

Referenced by cVideoRender::OsdClear(), and cVideoRender::OsdDrawARGB().

◆ NumPlanes()

int cDrmBuffer::NumPlanes ( void )

inline

Definition at line 75 of file drmbuffer.h.

References m_numPlanes.

◆ Offset() [1/2]

uint32_t cDrmBuffer::Offset ( int idx )

inline

Definition at line 85 of file drmbuffer.h.

References m_offset.

◆ Offset() [2/2]

uint32_t * cDrmBuffer::Offset ( void )

inline

Definition at line 86 of file drmbuffer.h.

References m_offset.

◆ Pitch() [1/2]

uint32_t cDrmBuffer::Pitch ( int idx )

inline

Definition at line 88 of file drmbuffer.h.

References m_pitch.

Referenced by cVideoRender::OsdClear(), and cVideoRender::OsdDrawARGB().

◆ Pitch() [2/2]

uint32_t * cDrmBuffer::Pitch ( void )

inline

Definition at line 89 of file drmbuffer.h.

References m_pitch.

◆ PixFmt()

uint32_t cDrmBuffer::PixFmt ( void )

inline

Definition at line 63 of file drmbuffer.h.

References m_pixFmt.

◆ Plane()

uint8_t * cDrmBuffer::Plane ( int idx )

inline

Definition at line 81 of file drmbuffer.h.

References m_pPlane.

Referenced by cVideoRender::OsdClear(), and cVideoRender::OsdDrawARGB().

◆ PresentationFinished()

void cDrmBuffer::PresentationFinished ( void )

The presentation of this buffer has finished.

Destroys the buffer, if it is not needed anymore (m_destroyAfterUse == true)

Definition at line 407 of file drmbuffer.cpp.

References Destroy(), frame, m_destroyAfterUse, and m_presentationPending.

Referenced by cVideoRender::DisplayFrame().

◆ PrimeHandle() [1/2]

uint32_t cDrmBuffer::PrimeHandle ( int idx )

inline

Definition at line 82 of file drmbuffer.h.

References m_planePrimeHandle.

◆ PrimeHandle() [2/2]

uint32_t * cDrmBuffer::PrimeHandle ( void )

inline

Definition at line 83 of file drmbuffer.h.

References m_planePrimeHandle.

◆ SetDestroyAfterUse()

void cDrmBuffer::SetDestroyAfterUse ( bool val )

inline

Definition at line 95 of file drmbuffer.h.

References m_destroyAfterUse.

Referenced by cVideoRender::ClearDecoderToDisplayQueue().

◆ SetDmaBufHandle()

void cDrmBuffer::SetDmaBufHandle ( uint32_t fd )

inline

Definition at line 78 of file drmbuffer.h.

References m_dmaBufHandle.

◆ SetFdDrm()

void cDrmBuffer::SetFdDrm ( int fdDrm )

inline

Definition at line 74 of file drmbuffer.h.

References m_drmDeviceFd.

◆ SetHandle()

void cDrmBuffer::SetHandle	(	int	idx,
		uint32_t	handle
	)

inline

Definition at line 84 of file drmbuffer.h.

References m_planePrimeHandle.

◆ SetHeight()

void cDrmBuffer::SetHeight ( uint32_t height )

inline

Definition at line 62 of file drmbuffer.h.

References m_height.

◆ SetId()

void cDrmBuffer::SetId ( int id )

inline

Definition at line 73 of file drmbuffer.h.

References m_fbId.

◆ SetNumObjects()

void cDrmBuffer::SetNumObjects ( int numObjects )

inline

Definition at line 79 of file drmbuffer.h.

References m_numObjects.

◆ SetNumPlanes()

void cDrmBuffer::SetNumPlanes ( int numPlanes )

inline

Definition at line 76 of file drmbuffer.h.

References m_numPlanes.

◆ SetObjectIndex()

void cDrmBuffer::SetObjectIndex	(	int	idx,
		uint32_t	objIdx
	)

inline

Definition at line 80 of file drmbuffer.h.

References m_objIdx.

◆ SetOffset()

void cDrmBuffer::SetOffset	(	int	idx,
		uint32_t	offset
	)

inline

Definition at line 87 of file drmbuffer.h.

References m_offset.

◆ SetPitch()

void cDrmBuffer::SetPitch	(	int	idx,
		uint32_t	pitch
	)

inline

Definition at line 90 of file drmbuffer.h.

References m_pitch.

◆ SetPixFmt()

void cDrmBuffer::SetPixFmt ( uint32_t pixFmt )

inline

Definition at line 64 of file drmbuffer.h.

References m_pixFmt.

◆ SetPresentationPending()

void cDrmBuffer::SetPresentationPending ( bool pending )

inline

Definition at line 70 of file drmbuffer.h.

References m_presentationPending.

◆ SetSize()

void cDrmBuffer::SetSize	(	int	idx,
		uint32_t	size
	)

inline

Definition at line 93 of file drmbuffer.h.

References m_size.

◆ SetSizeOnScreen()

void cDrmBuffer::SetSizeOnScreen	(	int	x,
		int	y,
		int	w,
		int	h
	)

inline

Definition at line 97 of file drmbuffer.h.

References m_rectOnScreen.

Referenced by cVideoRender::SetOsdBuffer().

◆ Setup()

void cDrmBuffer::Setup	(	int	drmDeviceFd,
		uint32_t	width,
		uint32_t	height,
		uint32_t	pixFmt,
		AVDRMFrameDescriptor *	primedata,
		bool	closeHandleOnDestroy
	)

Setup the buffer.

Parameters

drmDeviceFd	drm device file descriptor
width	buffer width
height	buffer height
pixFmt	buffer pixel format
primedata	AVDRMFrameDescriptor or NULL (if this is a software buffer)

Definition at line 259 of file drmbuffer.cpp.

References FindFormat(), L_DRM, LOGDEBUG2, LOGERROR, LOGFATAL, m_closeHandleOnDestroy, m_dirty, m_dmaBufHandle, m_drmDeviceFd, m_fbId, m_height, m_numObjects, m_numPlanes, m_objectPrimeHandle, m_objIdx, m_offset, m_pitch, m_pixFmt, m_planePrimeHandle, m_pPlane, m_size, m_width, format_info::num_planes, plane, and format_info::planes.

Referenced by cVideoRender::Init().

◆ SetWidth()

void cDrmBuffer::SetWidth ( uint32_t width )

inline

Definition at line 60 of file drmbuffer.h.

References m_width.

◆ Size() [1/2]

uint32_t cDrmBuffer::Size ( int idx )

inline

Definition at line 91 of file drmbuffer.h.

References m_size.

◆ Size() [2/2]

uint32_t * cDrmBuffer::Size ( void )

inline

Definition at line 92 of file drmbuffer.h.

References m_size.

◆ Width()

uint32_t cDrmBuffer::Width ( void )

inline

Definition at line 59 of file drmbuffer.h.

References m_width.

Referenced by cVideoRender::Init(), and cVideoRender::SetOsdBuffer().

Member Data Documentation

◆ frame

AVFrame* cDrmBuffer::frame = nullptr

associated AVFrame

Definition at line 94 of file drmbuffer.h.

Referenced by cVideoRender::DisplayBlackFrame(), cVideoRender::DisplayFrame(), and PresentationFinished().

◆ m_closeHandleOnDestroy

bool cDrmBuffer::m_closeHandleOnDestroy

private

true, if DMA-BUF handle should be closed on destroy

Definition at line 127 of file drmbuffer.h.

Referenced by Destroy(), and Setup().

◆ m_destroyAfterUse

bool cDrmBuffer::m_destroyAfterUse = false

private

true, if buffer should be destroyed after use

Definition at line 126 of file drmbuffer.h.

Referenced by Destroy(), PresentationFinished(), and SetDestroyAfterUse().

◆ m_dirty

bool cDrmBuffer::m_dirty

private

true, if the buffer is dirty (it was written to)

Definition at line 107 of file drmbuffer.h.

Referenced by cDrmBuffer(), cDrmBuffer(), cDrmBuffer(), Destroy(), IsDirty(), MarkClean(), MarkDirty(), and Setup().

◆ m_dmaBufHandle

int cDrmBuffer::m_dmaBufHandle[4]

private

DMA-BUF file descriptor.

Definition at line 114 of file drmbuffer.h.

Referenced by cDrmBuffer(), cDrmBuffer(), Destroy(), DmaBufHandle(), SetDmaBufHandle(), and Setup().

◆ m_drmDeviceFd

int cDrmBuffer::m_drmDeviceFd

private

drm device file descriptor

Definition at line 110 of file drmbuffer.h.

Referenced by Destroy(), SetFdDrm(), and Setup().

◆ m_fbId

uint32_t cDrmBuffer::m_fbId

private

framebuffer id

Definition at line 109 of file drmbuffer.h.

Referenced by Destroy(), Id(), SetId(), and Setup().

◆ m_height

uint32_t cDrmBuffer::m_height

private

buffer height

Definition at line 102 of file drmbuffer.h.

Referenced by Destroy(), FillBlack(), Height(), SetHeight(), and Setup().

◆ m_numObjects

int cDrmBuffer::m_numObjects

private

number of prime objects in the buffer

Definition at line 115 of file drmbuffer.h.

Referenced by cDrmBuffer(), Destroy(), SetNumObjects(), and Setup().

◆ m_numPlanes

int cDrmBuffer::m_numPlanes

private

number of planes in the buffer

Definition at line 112 of file drmbuffer.h.

Referenced by cDrmBuffer(), cDrmBuffer(), cDrmBuffer(), Destroy(), NumPlanes(), SetNumPlanes(), and Setup().

◆ m_objectPrimeHandle

uint32_t cDrmBuffer::m_objectPrimeHandle[4]

private

primedata objects prime handles (count is numObjects, index is objIdx)

Definition at line 117 of file drmbuffer.h.

Referenced by Destroy(), and Setup().

◆ m_objIdx

int cDrmBuffer::m_objIdx[4]

private

index of the objects

Definition at line 116 of file drmbuffer.h.

Referenced by cDrmBuffer(), Destroy(), SetObjectIndex(), and Setup().

◆ m_offset

uint32_t cDrmBuffer::m_offset[4]

private

array of the plane offset

Definition at line 121 of file drmbuffer.h.

Referenced by cDrmBuffer(), cDrmBuffer(), Destroy(), Offset(), Offset(), SetOffset(), and Setup().

◆ m_pBo

struct gbm_bo* cDrmBuffer::m_pBo

private

pointer to the gbm buffer object

Definition at line 130 of file drmbuffer.h.

◆ m_pitch

uint32_t cDrmBuffer::m_pitch[4]

private

array of the plane pitch

Definition at line 122 of file drmbuffer.h.

Referenced by cDrmBuffer(), cDrmBuffer(), Destroy(), Pitch(), Pitch(), SetPitch(), and Setup().

◆ m_pixFmt

uint32_t cDrmBuffer::m_pixFmt

private

buffer pixel format

Definition at line 103 of file drmbuffer.h.

Referenced by PixFmt(), SetPixFmt(), and Setup().

◆ m_planePrimeHandle

uint32_t cDrmBuffer::m_planePrimeHandle[4]

private

array of the plane handles

Definition at line 120 of file drmbuffer.h.

Referenced by cDrmBuffer(), cDrmBuffer(), Destroy(), PrimeHandle(), PrimeHandle(), SetHandle(), and Setup().

◆ m_pPlane

uint8_t* cDrmBuffer::m_pPlane[4]

private

array of the plane data

Definition at line 119 of file drmbuffer.h.

Referenced by cDrmBuffer(), cDrmBuffer(), cDrmBuffer(), Destroy(), FillBlack(), Plane(), and Setup().

◆ m_presentationPending

bool cDrmBuffer::m_presentationPending = false

private

true, if buffer presentation is pending

Definition at line 125 of file drmbuffer.h.

Referenced by IsPresentationPending(), PresentationFinished(), and SetPresentationPending().

◆ m_rectOnScreen

cRect cDrmBuffer::m_rectOnScreen

private

dimensions on screen - set at pageflip, needed for grab

Definition at line 105 of file drmbuffer.h.

Referenced by GetScreenRect(), and SetSizeOnScreen().

◆ m_size

uint32_t cDrmBuffer::m_size[4] {0}

private

array of the plane size

Definition at line 123 of file drmbuffer.h.

Referenced by cDrmBuffer(), cDrmBuffer(), Destroy(), SetSize(), Setup(), Size(), and Size().

◆ m_width

uint32_t cDrmBuffer::m_width

private

buffer width

Definition at line 101 of file drmbuffer.h.

Referenced by Destroy(), FillBlack(), Setup(), SetWidth(), and Width().

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

Public Member Functions

Public Attributes

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ cDrmBuffer() [1/3]

◆ cDrmBuffer() [2/3]

◆ cDrmBuffer() [3/3]

Member Function Documentation

◆ Destroy()

◆ DmaBufHandle()

◆ FillBlack()

◆ GetScreenRect()

◆ Height()

◆ Id()

◆ IsDirty()

◆ IsPresentationPending()

◆ MarkClean()

◆ MarkDirty()

◆ NumPlanes()

◆ Offset() [1/2]

◆ Offset() [2/2]

◆ Pitch() [1/2]

◆ Pitch() [2/2]

◆ PixFmt()

◆ Plane()

◆ PresentationFinished()

◆ PrimeHandle() [1/2]

◆ PrimeHandle() [2/2]

◆ SetDestroyAfterUse()

◆ SetDmaBufHandle()

◆ SetFdDrm()

◆ SetHandle()

◆ SetHeight()

◆ SetId()

◆ SetNumObjects()

◆ SetNumPlanes()

◆ SetObjectIndex()

◆ SetOffset()

◆ SetPitch()

◆ SetPixFmt()

◆ SetPresentationPending()

◆ SetSize()

◆ SetSizeOnScreen()

◆ Setup()

◆ SetWidth()

◆ Size() [1/2]

◆ Size() [2/2]

◆ Width()

Member Data Documentation

◆ frame

◆ m_closeHandleOnDestroy

◆ m_destroyAfterUse

◆ m_dirty

◆ m_dmaBufHandle

◆ m_drmDeviceFd

◆ m_fbId

◆ m_height

◆ m_numObjects

◆ m_numPlanes

◆ m_objectPrimeHandle

◆ m_objIdx

◆ m_offset

◆ m_pBo

◆ m_pitch

◆ m_pixFmt

◆ m_planePrimeHandle

◆ m_pPlane

◆ m_presentationPending

◆ m_rectOnScreen

◆ m_size

◆ m_width