cVideoFilter Class Reference

Video Filter. More...

#include <videofilter.h>

Public Member Functions
	cVideoFilter (cVideoRender *, cQueue< cDrmBuffer > *, const char *, std::function< void(AVFrame *)>)
	Initiate Filter.
void	InitAndStart (const AVCodecContext *, AVFrame *, bool)
	Init and start the video filter thread.
void	Stop (void)
	Stops the filter thread and does a cleanup.
void	PushFrame (AVFrame *)
	Puts a frame in the buffer to be filtered.
bool	IsInputBufferFull (void)
int	GetNumFramesToFilter (void)

Private Member Functions
void	Action (void)
	Main filter thread loop.
void	SetFilterOutputPixFormat (AVPixelFormat)
	Setup the filter output pixel format.

Private Attributes
cVideoRender *	m_pRender
	pointer to renderer
AVFilterGraph *	m_pFilterGraph
	filter graph
AVFilterContext *	m_pBuffersrcCtx
	buffer src context
AVFilterContext *	m_pBuffersinkCtx
	buffer sink context
bool	m_filterBug
	flag for a ffmpeg bug
cQueue< AVFrame >	m_frames {VIDEO_SURFACES_MAX}
	queue for frames to be filtered
std::function< void(AVFrame *)>	m_frameOutput
	function to output the frame
cQueue< cDrmBuffer > *	m_pDrmBufferQueue
	pointer to renderer's DRM buffer queue
int	m_numFramesToFilter = 0
	number of frames to be filtered

Detailed Description

Video Filter.

Definition at line 41 of file videofilter.h.

Constructor & Destructor Documentation

cVideoFilter()

cVideoFilter::cVideoFilter	(	cVideoRender *	videoRender,
		cQueue< cDrmBuffer > *	drmBufferQueue,
		const char *	name,
		std::function< void(AVFrame *)>	frameOutput
	)

Initiate Filter.

Parameters

videoRender	renderer
drmBufferQueue	drm buffer queue
name	stream name
frameOutput	frame output function

Definition at line 36 of file videofilter.cpp.

Member Function Documentation

Action()

void cVideoFilter::Action ( void  )

private

Main filter thread loop.

Pops unfiltered frames from the input queue, processes them and sends the filtered frames to the render queue

Definition at line 205 of file videofilter.cpp.

References av_err2str, cQueue< T >::IsEmpty(), cQueue< T >::IsFull(), isInterlacedFrame(), LOGDEBUG, LOGERROR, LOGFATAL, LOGWARNING, m_filterBug, m_frameOutput, m_frames, m_numFramesToFilter, m_pBuffersinkCtx, m_pBuffersrcCtx, m_pDrmBufferQueue, and cQueue< T >::Pop().

GetNumFramesToFilter()

int cVideoFilter::GetNumFramesToFilter ( void  )

inline

Definition at line 48 of file videofilter.h.

References m_numFramesToFilter.

Referenced by cVideoStream::RenderFrame().

InitAndStart()

void cVideoFilter::InitAndStart	(	const AVCodecContext *	videoCtx,
		AVFrame *	frame,
		bool	enableDeinterlacer
	)

Init and start the video filter thread.

Parameters

videoCtx	codec context
frame	AVFrame to take init parameters from
enableDeinterlacer	true, if the deinterlacer should be used

Definition at line 73 of file videofilter.cpp.

References L_CODEC, LOGDEBUG2, LOGFATAL, m_filterBug, m_numFramesToFilter, m_pBuffersinkCtx, m_pBuffersrcCtx, m_pFilterGraph, and SetFilterOutputPixFormat().

Referenced by cVideoStream::RenderFrame().

IsInputBufferFull()

bool cVideoFilter::IsInputBufferFull ( void  )

inline

Definition at line 47 of file videofilter.h.

References cQueue< T >::IsFull(), and m_frames.

Referenced by cVideoStream::DecodeInput().

PushFrame()

void cVideoFilter::PushFrame

(

AVFrame *

frame

)

Puts a frame in the buffer to be filtered.

Definition at line 263 of file videofilter.cpp.

References m_frames, and cQueue< T >::Push().

Referenced by cVideoStream::RenderFrame().

SetFilterOutputPixFormat()

void cVideoFilter::SetFilterOutputPixFormat ( AVPixelFormat  pixFmt )

private

Setup the filter output pixel format.

Parameters

pixFmt

AV pixel format

Definition at line 49 of file videofilter.cpp.

References LOGFATAL, and m_pBuffersinkCtx.

Referenced by InitAndStart().

Stop()

void cVideoFilter::Stop

(

void

)

Stops the filter thread and does a cleanup.

Definition at line 271 of file videofilter.cpp.

References cQueue< T >::IsEmpty(), LOGDEBUG, m_filterBug, m_frames, m_numFramesToFilter, m_pFilterGraph, and cQueue< T >::Pop().

Referenced by cVideoStream::CancelFilterThread().

Member Data Documentation

m_filterBug

bool cVideoFilter::m_filterBug

private

flag for a ffmpeg bug

Definition at line 57 of file videofilter.h.

Referenced by Action(), InitAndStart(), and Stop().

m_frameOutput

std::function<void(AVFrame *)> cVideoFilter::m_frameOutput

private

function to output the frame

Definition at line 59 of file videofilter.h.

Referenced by Action().

m_frames

cQueue<AVFrame> cVideoFilter::m_frames {VIDEO_SURFACES_MAX}

private

queue for frames to be filtered

Definition at line 58 of file videofilter.h.

Referenced by Action(), IsInputBufferFull(), PushFrame(), and Stop().

m_numFramesToFilter

int cVideoFilter::m_numFramesToFilter = 0

private

number of frames to be filtered

Definition at line 61 of file videofilter.h.

Referenced by Action(), GetNumFramesToFilter(), InitAndStart(), and Stop().

m_pBuffersinkCtx

AVFilterContext* cVideoFilter::m_pBuffersinkCtx

private

buffer sink context

Definition at line 55 of file videofilter.h.

Referenced by Action(), InitAndStart(), and SetFilterOutputPixFormat().

m_pBuffersrcCtx

AVFilterContext* cVideoFilter::m_pBuffersrcCtx

private

buffer src context

Definition at line 54 of file videofilter.h.

Referenced by Action(), and InitAndStart().

m_pDrmBufferQueue

cQueue<cDrmBuffer>* cVideoFilter::m_pDrmBufferQueue

private

pointer to renderer's DRM buffer queue

Definition at line 60 of file videofilter.h.

Referenced by Action().

m_pFilterGraph

AVFilterGraph* cVideoFilter::m_pFilterGraph

private

filter graph

Definition at line 53 of file videofilter.h.

Referenced by InitAndStart(), and Stop().

m_pRender

cVideoRender* cVideoFilter::m_pRender

private

pointer to renderer

Definition at line 51 of file videofilter.h.

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

• videofilter.h
• videofilter.cpp