cVideoDecoder Class Reference

Video Decoder. More...

#include <codec_video.h>

Public Member Functions
	cVideoDecoder (int, const char *)
	Create a new video decoder.
int	Open (enum AVCodecID, AVCodecParameters *, AVRational, bool, int, int)
	Open the video decoder.
void	Close (void)
	Close video decoder.
int	SendPacket (const AVPacket *)
	Send a video packet to be decoded.
int	ReceiveFrame (AVFrame **)
	Receive a decoded a video frame.
void	FlushBuffers (void)
	Flush the video decoder buffers.
int	ReopenCodec (enum AVCodecID, AVCodecParameters *, AVRational, int)
	Reopen the video decoder.
AVCodecContext *	GetContext (void)
bool	IsHardwareDecoder (void)
const char *	Name (void)
int	GetPacketsSent (void)
int	GetFramesReceived (void)

Private Member Functions
int	GetExtraData (const AVPacket *)
	Get extradata from avpkt.
bool	IsKeyFrame (AVFrame *)
	Check, if this is a key frame.

Private Attributes
AVCodecContext *	m_pVideoCtx = nullptr
	video codec context
const char *	m_identifier
	identifier for logging
const char *	m_pCodecString = "unknown"
	codec (long) name string
cMutex	m_mutex
	mutex to lock codec context (TODO: is this needed?)
int	m_cntPacketsSent
	number of packets sent to decoder
int	m_cntFramesReceived
	number of decoded frames received from decoder
int	m_cntStartKeyFrames
	number of keyframes arrived while starting the coded (needed for amlogic h264 decoder in order to drop some frames in ReceiveFrame() before sending them to the renderer)
int	m_lastCodedWidth
	save coded width while closing for a directly reopen
int	m_lastCodedHeight
	save coded height while closing for a directly reopen
int	m_hardwareQuirks
	hardware specific quirks needed for decoder
bool	m_isHardwareDecoder = false
	true, if this is a hardware decoder

Detailed Description

Video Decoder.

Definition at line 32 of file codec_video.h.

Member Function Documentation

GetContext()

AVCodecContext * cVideoDecoder::GetContext ( void  )

inline

Definition at line 41 of file codec_video.h.

References m_pVideoCtx.

Referenced by cVideoStream::GetVideoSize(), and cVideoStream::RenderFrame().

GetFramesReceived()

int cVideoDecoder::GetFramesReceived ( void  )

inline

Definition at line 45 of file codec_video.h.

References m_cntFramesReceived.

Referenced by cVideoStream::DecodeInput().

GetPacketsSent()

int cVideoDecoder::GetPacketsSent ( void  )

inline

Definition at line 44 of file codec_video.h.

References m_cntPacketsSent.

Referenced by cVideoStream::DecodeInput().

IsHardwareDecoder()

bool cVideoDecoder::IsHardwareDecoder ( void  )

inline

Definition at line 42 of file codec_video.h.

References m_isHardwareDecoder.

Referenced by cVideoStream::DecodeInput(), cVideoStream::FlushDecoder(), and cVideoStream::OpenDecoder().

Name()

const char * cVideoDecoder::Name ( void  )

inline

Definition at line 43 of file codec_video.h.

References m_pCodecString.

Referenced by cVideoStream::OpenDecoder().

Member Data Documentation

m_cntFramesReceived

int cVideoDecoder::m_cntFramesReceived

private

number of decoded frames received from decoder

Definition at line 53 of file codec_video.h.

Referenced by Close(), FlushBuffers(), GetFramesReceived(), Open(), ReceiveFrame(), and ReopenCodec().

m_cntPacketsSent

int cVideoDecoder::m_cntPacketsSent

private

number of packets sent to decoder

Definition at line 52 of file codec_video.h.

Referenced by Close(), FlushBuffers(), GetPacketsSent(), Open(), ReceiveFrame(), ReopenCodec(), and SendPacket().

m_cntStartKeyFrames

int cVideoDecoder::m_cntStartKeyFrames

private

number of keyframes arrived while starting the coded (needed for amlogic h264 decoder in order to drop some frames in ReceiveFrame() before sending them to the renderer)

Definition at line 54 of file codec_video.h.

Referenced by Open(), ReceiveFrame(), and ReopenCodec().

m_hardwareQuirks

int cVideoDecoder::m_hardwareQuirks

private

hardware specific quirks needed for decoder

Definition at line 59 of file codec_video.h.

Referenced by Open(), and ReceiveFrame().

m_identifier

const char* cVideoDecoder::m_identifier

private

identifier for logging

Definition at line 49 of file codec_video.h.

Referenced by Close(), FlushBuffers(), GetExtraData(), Open(), ReceiveFrame(), ReopenCodec(), and SendPacket().

m_isHardwareDecoder

bool cVideoDecoder::m_isHardwareDecoder = false

private

true, if this is a hardware decoder

Definition at line 60 of file codec_video.h.

Referenced by IsHardwareDecoder(), and Open().

m_lastCodedHeight

int cVideoDecoder::m_lastCodedHeight

private

save coded height while closing for a directly reopen

Definition at line 58 of file codec_video.h.

Referenced by Close(), and ReopenCodec().

m_lastCodedWidth

int cVideoDecoder::m_lastCodedWidth

private

save coded width while closing for a directly reopen

Definition at line 57 of file codec_video.h.

Referenced by Close(), and ReopenCodec().

m_mutex

cMutex cVideoDecoder::m_mutex

private

mutex to lock codec context (TODO: is this needed?)

Definition at line 51 of file codec_video.h.

Referenced by Close(), FlushBuffers(), Open(), ReceiveFrame(), and SendPacket().

m_pCodecString

const char* cVideoDecoder::m_pCodecString = "unknown"

private

codec (long) name string

Definition at line 50 of file codec_video.h.

Referenced by Name(), and Open().

m_pVideoCtx

AVCodecContext* cVideoDecoder::m_pVideoCtx = nullptr

private

video codec context

Definition at line 48 of file codec_video.h.

Referenced by Close(), FlushBuffers(), GetContext(), GetExtraData(), Open(), ReceiveFrame(), ReopenCodec(), and SendPacket().

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

• codec_video.h
• codec_video.cpp