CBitstreamConverter Class Reference

#include <BitstreamConverter.h>

Classes
struct	omx_bitstream_ctx

Public Member Functions
	CBitstreamConverter ()
	~CBitstreamConverter ()
bool	Open (enum AVCodecID codec, uint8_t *in_extradata, int in_extrasize, bool to_annexb)
void	Close (void)
bool	NeedConvert (void) const
bool	Convert (uint8_t *pData, int iSize)
uint8_t *	GetConvertBuffer (void) const
int	GetConvertSize () const
uint8_t *	GetExtraData (void) const
int	GetExtraSize () const
void	ResetStartDecode (void)
bool	CanStartDecode () const

Static Public Member Functions
static bool	mpeg2_sequence_header (const uint8_t *data, const uint32_t size, mpeg2_sequence *sequence)

Protected Types
typedef struct CBitstreamConverter::omx_bitstream_ctx	omx_bitstream_ctx

Protected Member Functions
int	isom_write_avcc (AVIOContext *pb, const uint8_t *data, int len)
bool	IsIDR (uint8_t unit_type)
bool	IsSlice (uint8_t unit_type)
bool	BitstreamConvertInitAVC (void *in_extradata, int in_extrasize)
bool	BitstreamConvertInitHEVC (void *in_extradata, int in_extrasize)
bool	BitstreamConvert (uint8_t *pData, int iSize, uint8_t **poutbuf, int *poutbuf_size)

Static Protected Member Functions
static int	avc_parse_nal_units (AVIOContext *pb, const uint8_t *buf_in, int size)
static int	avc_parse_nal_units_buf (const uint8_t *buf_in, uint8_t **buf, int *size)
static void	BitstreamAllocAndCopy (uint8_t **poutbuf, int *poutbuf_size, const uint8_t *sps_pps, uint32_t sps_pps_size, const uint8_t *in, uint32_t in_size)

Protected Attributes
uint8_t *	m_convertBuffer
int	m_convertSize
uint8_t *	m_inputBuffer
int	m_inputSize
uint32_t	m_sps_pps_size
omx_bitstream_ctx	m_sps_pps_context
bool	m_convert_bitstream
bool	m_to_annexb
uint8_t *	m_extradata
int	m_extrasize
bool	m_convert_3byteTo4byteNALSize
bool	m_convert_bytestream
AVCodecID	m_codec
bool	m_start_decode

Member Typedef Documentation

omx_bitstream_ctx

typedef struct CBitstreamConverter::omx_bitstream_ctx CBitstreamConverter::omx_bitstream_ctx

protected

Constructor & Destructor Documentation

CBitstreamConverter()

CBitstreamConverter::CBitstreamConverter

(

)

~CBitstreamConverter()

CBitstreamConverter::~CBitstreamConverter

(

)

Member Function Documentation

avc_parse_nal_units()

int CBitstreamConverter::avc_parse_nal_units ( AVIOContext *  pb, const uint8_t *  buf_in, int  size  )

staticprotected

avc_parse_nal_units_buf()

int CBitstreamConverter::avc_parse_nal_units_buf ( const uint8_t *  buf_in, uint8_t **  buf, int *  size  )

staticprotected

BitstreamAllocAndCopy()

void CBitstreamConverter::BitstreamAllocAndCopy ( uint8_t **  poutbuf, int *  poutbuf_size, const uint8_t *  sps_pps, uint32_t  sps_pps_size, const uint8_t *  in, uint32_t  in_size  )

staticprotected

BitstreamConvert()

bool CBitstreamConverter::BitstreamConvert ( uint8_t *  pData, int  iSize, uint8_t **  poutbuf, int *  poutbuf_size  )

protected

BitstreamConvertInitAVC()

bool CBitstreamConverter::BitstreamConvertInitAVC ( void *  in_extradata, int  in_extrasize  )

protected

BitstreamConvertInitHEVC()

bool CBitstreamConverter::BitstreamConvertInitHEVC ( void *  in_extradata, int  in_extrasize  )

protected

CanStartDecode()

bool CBitstreamConverter::CanStartDecode

(

)

const

Close()

void CBitstreamConverter::Close

(

void

)

Convert()

bool CBitstreamConverter::Convert	(	uint8_t *	pData,
		int	iSize
	)

GetConvertBuffer()

uint8_t * CBitstreamConverter::GetConvertBuffer

(

void

)

const

GetConvertSize()

int CBitstreamConverter::GetConvertSize

(

)

const

GetExtraData()

uint8_t * CBitstreamConverter::GetExtraData

(

void

)

const

GetExtraSize()

int CBitstreamConverter::GetExtraSize

(

)

const

IsIDR()

bool CBitstreamConverter::IsIDR ( uint8_t  unit_type )

protected

isom_write_avcc()

int CBitstreamConverter::isom_write_avcc ( AVIOContext *  pb, const uint8_t *  data, int  len  )

protected

IsSlice()

bool CBitstreamConverter::IsSlice ( uint8_t  unit_type )

protected

mpeg2_sequence_header()

bool CBitstreamConverter::mpeg2_sequence_header ( const uint8_t *  data, const uint32_t  size, mpeg2_sequence *  sequence  )

static

NeedConvert()

bool CBitstreamConverter::NeedConvert ( void  ) const

inline

Open()

bool CBitstreamConverter::Open	(	enum AVCodecID	codec,
		uint8_t *	in_extradata,
		int	in_extrasize,
		bool	to_annexb
	)

Todo:

from Amlogic It seems the extradata is encoded as hvcC format. Temporarily, we support configurationVersion==0 until 14496-15 3rd is finalized. When finalized, configurationVersion will be 1 and we can recognize hvcC by checking if extradata[0]==1 or not.

Todo:

convert annexb to bitstream format

ResetStartDecode()

void CBitstreamConverter::ResetStartDecode

(

void

)

Member Data Documentation

m_codec

AVCodecID CBitstreamConverter::m_codec

protected

m_convert_3byteTo4byteNALSize

bool CBitstreamConverter::m_convert_3byteTo4byteNALSize

protected

m_convert_bitstream

bool CBitstreamConverter::m_convert_bitstream

protected

m_convert_bytestream

bool CBitstreamConverter::m_convert_bytestream

protected

m_convertBuffer

uint8_t* CBitstreamConverter::m_convertBuffer

protected

m_convertSize

int CBitstreamConverter::m_convertSize

protected

m_extradata

uint8_t* CBitstreamConverter::m_extradata

protected

m_extrasize

int CBitstreamConverter::m_extrasize

protected

m_inputBuffer

uint8_t* CBitstreamConverter::m_inputBuffer

protected

m_inputSize

int CBitstreamConverter::m_inputSize

protected

m_sps_pps_context

omx_bitstream_ctx CBitstreamConverter::m_sps_pps_context

protected

m_sps_pps_size

uint32_t CBitstreamConverter::m_sps_pps_size

protected

m_start_decode

bool CBitstreamConverter::m_start_decode

protected

m_to_annexb

bool CBitstreamConverter::m_to_annexb

protected

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

• BitstreamConverter.h
• BitstreamConverter.cpp