ICCBitstreamParser Class Reference

Base interface for codec-specific closed caption bitstream parsers. More...

#include <ICCBitstreamParser.h>

Inheritance diagram for ICCBitstreamParser:

Public Member Functions
virtual	~ICCBitstreamParser ()=default
virtual CCPictureType	ParsePacket (DemuxPacket *pPacket, std::vector< CCaptionBlock > &tempBuffer, std::vector< CCaptionBlock > &reorderBuffer)=0
	Parse a video packet and extract closed caption data.
virtual const char *	GetName () const =0
	Get parser name for debugging/logging.

Detailed Description

Base interface for codec-specific closed caption bitstream parsers.

Implementations extract CEA-608/708 closed caption data from video packets. Each codec (MPEG2, H.264 AVCC, H.264 Annex B) has its own parsing logic.

Constructor & Destructor Documentation

~ICCBitstreamParser()

virtual ICCBitstreamParser::~ICCBitstreamParser ( )

virtualdefault

Member Function Documentation

GetName()

virtual const char * ICCBitstreamParser::GetName ( ) const

pure virtual

Get parser name for debugging/logging.

Returns

Human-readable parser name

Implemented in CH264AnnexBBitstreamParser, CH264AVCCBitstreamParser, and CMPEG2CCBitstreamParser.

ParsePacket()

virtual CCPictureType ICCBitstreamParser::ParsePacket ( DemuxPacket * pPacket, std::vector< CCaptionBlock > & tempBuffer, std::vector< CCaptionBlock > & reorderBuffer )

pure virtual

Parse a video packet and extract closed caption data.

Parameters

pPacket	Video packet to parse (contains raw bitstream data)
tempBuffer	Temporary buffer for CC data (used for reordering)
reorderBuffer	Reorder buffer for CC data (sorted by PTS)

Returns

Picture type of the frame, used to determine when to decode CC

Implementations search for SEI (H.264) or user data (MPEG2) NAL units containing GA94 closed caption payloads.

Implemented in CH264AnnexBBitstreamParser, CH264AVCCBitstreamParser, and CMPEG2CCBitstreamParser.

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

• ICCBitstreamParser.h