sei.h File Reference

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Data Structures
struct	bufferingperiod_information_struct
struct	sei_struct
	SEI structure. More...
struct	spare_picture_struct
	Spare Picture. More...
struct	subseq_information_struct
	Subseq Information. More...
struct	subseq_layer_information_struct
	Subseq Layer Information. More...
struct	subseq_char_information_struct
	Subseq Characteristics. More...
struct	scene_information_struct
struct	panscanrect_information_struct
	PanScanRect Information. More...
struct	user_data_unregistered_information_struct
	User_data_unregistered Information. More...
struct	user_data_registered_itu_t_t35_information_struct
	User_data_registered_itu_t_t35 Information. More...
struct	recovery_point_information_struct
	Recovery Point Information. More...
struct	pictiming_information_struct
	Picture timing Information. More...
struct	drpm_repetition_information_struct
	Picture timing Information. More...
struct	post_filter_information_struct
	Post Filter Hints Information. More...
struct	ToneMappingSEI
struct	sei_params
Defines
#define	MAX_LAYER_NUMBER   2
#define	MAX_DEPENDENT_SUBSEQ   5
#define	MAX_CODED_BIT_DEPTH   12
#define	MAX_SEI_BIT_DEPTH   12
#define	MAX_NUM_PIVOTS   (1<<MAX_CODED_BIT_DEPTH)
#define	MAX_CPB_CNT_MINUS1   31
#define	MAX_PIC_STRUCT_VALUE   16
#define	MAX_FN   256
#define	AGGREGATION_PACKET_TYPE   4
#define	SEI_PACKET_TYPE   5
#define	NORMAL_SEI   0
#define	AGGREGATION_SEI   1
Typedefs
typedef struct sei_params	SEIParameters
Enumerations
enum	SEI_type {   SEI_BUFFERING_PERIOD = 0, SEI_PIC_TIMING, SEI_PAN_SCAN_RECT, SEI_FILLER_PAYLOAD,   SEI_USER_DATA_REGISTERED_ITU_T_T35, SEI_USER_DATA_UNREGISTERED, SEI_RECOVERY_POINT, SEI_DEC_REF_PIC_MARKING_REPETITION,   SEI_SPARE_PIC, SEI_SCENE_INFO, SEI_SUB_SEQ_INFO, SEI_SUB_SEQ_LAYER_CHARACTERISTICS,   SEI_SUB_SEQ_CHARACTERISTICS, SEI_FULL_FRAME_FREEZE, SEI_FULL_FRAME_FREEZE_RELEASE, SEI_FULL_FRAME_SNAPSHOT,   SEI_PROGRESSIVE_REFINEMENT_SEGMENT_START, SEI_PROGRESSIVE_REFINEMENT_SEGMENT_END, SEI_MOTION_CONSTRAINED_SLICE_GROUP_SET, SEI_FILM_GRAIN_CHARACTERISTICS,   SEI_DEBLOCKING_FILTER_DISPLAY_PREFERENCE, SEI_STEREO_VIDEO_INFO, SEI_POST_FILTER_HINTS, SEI_TONE_MAPPING,   SEI_MAX_ELEMENTS }
Functions
void	InitSEIMessages (ImageParameters *p_Img, InputParameters *p_Inp)
void	CloseSEIMessages (ImageParameters *p_Img, InputParameters *p_Inp)
Boolean	HaveAggregationSEI (ImageParameters *p_Img)
void	clear_sei_message (SEIParameters *p_SEI, int id)
void	AppendTmpbits2Buf (Bitstream *dest, Bitstream *source)
void	PrepareAggregationSEIMessage (ImageParameters *p_Img)
void	CalculateSparePicture ()
Boolean	CompressSpareMBMap (ImageParameters *p_Img, unsigned char **map_sp, Bitstream *bitstream)
void	InitSubseqInfo (SEIParameters *p_SEI, int currLayer)
void	UpdateSubseqInfo (ImageParameters *p_Img, InputParameters *p_Inp, int currLayer)
void	CloseSubseqInfo (SEIParameters *p_SEI, int currLayer)
void	CloseSubseqLayerInfo ()
void	UpdateSubseqChar (ImageParameters *p_Img)
void	InitSceneInformation (SEIParameters *p_SEI)
void	CloseSceneInformation (SEIParameters *p_SEI)
void	UpdateSceneInformation (SEIParameters *p_SEI, Boolean HasSceneInformation, int sceneID, int sceneTransType, int secondSceneID)
void	FinalizeSceneInformation (SEIParameters *p_SEI)
void	UpdatePanScanRectInfo (SEIParameters *p_SEI)
void	UpdateUser_data_unregistered (SEIParameters *p_SEI)
void	UpdateUser_data_registered_itu_t_t35 (SEIParameters *p_SEI)
void	ClearRandomAccess (SEIParameters *p_SEI)
void	UpdateRandomAccess (ImageParameters *p_Img)
void	UpdateToneMapping (SEIParameters *p_SEI)
void	init_sei (SEIParameters *p_SEI)
int	Write_SEI_NALU (ImageParameters *p_Img, int len)
void	InitBufferingPeriod (ImageParameters *p_Img)
void	ClearBufferingPeriod (SEIParameters *p_SEI, seq_parameter_set_rbsp_t *active_sps)
void	UpdateBufferingPeriod (ImageParameters *p_Img, InputParameters *p_Inp)
void	ClearPicTiming (SEIParameters *p_SEI)
void	UpdatePicTiming (ImageParameters *p_Img, InputParameters *p_Inp)
void	ClearDRPMRepetition (SEIParameters *p_SEI)
void	UpdateDRPMRepetition (SEIParameters *p_SEI)
void	free_drpm_buffer (DecRefPicMarking_t *pDRPM)
void	UpdatePostFilterHints (SEIParameters *p_SEI)
void	ComposeSparePictureMessage (SEIParameters *p_SEI, int delta_spare_frame_num, int ref_area_indicator, Bitstream *tmpBitstream)

---

Detailed Description

definitions for Supplemental Enhanced Information

sei.h

Author:

(s)

• Dong Tian <tian@cs.tut.fi>
• TBD

************************************************************************

Definition in file sei.h.

---

Define Documentation

#define MAX_CPB_CNT_MINUS1   31

Buffering Period Information.

Definition at line 26 of file sei.h.

---

Enumeration Type Documentation

enum SEI_type

definition of SEI payload type

Enumerator:

SEI_MAX_ELEMENTS

number of maximum syntax elements

Definition at line 38 of file sei.h.

---

Function Documentation

void AppendTmpbits2Buf	(	Bitstream *	dest,
		Bitstream *	source
	)

copy the bits from one bitstream buffer to another one

Parameters:

	dest	pointer to the dest bitstream buffer
	source	pointer to the source bitstream buffer

Output

the content of the dest bitstream is changed.

Definition at line 301 of file sei.c.

References Bitstream::bits_to_go, Bitstream::byte_buf, Bitstream::byte_pos, and Bitstream::streamBuffer.

Referenced by ComposeSparePictureMessage(), and FinalizeSpareMBMap().

void CalculateSparePicture

(

)

Calculate the spare picture info, save the result in map_sp then compose the spare picture information.

Output

the spare picture payload is available in *seiSparePicturePayload* the syntax elements in the loop (see FCD), excluding the two elements at the beginning.

Definition at line 413 of file sei.c.

void clear_sei_message	(	SEIParameters *	p_SEI,
		int	id
	)

empty the sei message buffer

Parameters:

	p_SEI	the SEI message to be cleared
	id	0, if this is the normal packet 1, if this is a aggregation packet

Output

the content of the sei message is cleared and ready for storing new messages

Definition at line 282 of file sei.c.

References MAXRTPPAYLOADLEN.

Referenced by PrepareAggregationSEIMessage().

void CloseSubseqInfo	(	SEIParameters *	p_SEI,
		int	currLayer
	)

Close the global variables for spare picture information.

Definition at line 973 of file sei.c.

void ComposeSparePictureMessage	(	SEIParameters *	p_SEI,
		int	delta_spare_frame_num,
		int	ref_area_indicator,
		Bitstream *	tmpBitstream
	)

compose the spare picture information.

Parameters:

	p_SEI	SEI message
	delta_spare_frame_num	see FCD
	ref_area_indicator	Indicate how to represent the spare mb map
	tmpBitstream	pointer to a buffer to save the payload

Output

bitstream: the composed spare picture payload are ready to put into the sei_message.

Definition at line 596 of file sei.c.

References AppendTmpbits2Buf(), syntaxelement::type, ue_linfo(), syntaxelement::value1, and writeSyntaxElement2Buf_UVLC().

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Boolean CompressSpareMBMap	(	ImageParameters *	p_Img,
		unsigned char **	map_sp,
		Bitstream *	bitstream
	)

test if the compressed spare mb map will occupy less mem and fill the payload buffer.

Parameters:

	p_Img	Image parameters for current picture coding
	map_sp	in which the spare picture information are stored.
	bitstream	pointer to a buffer to save the payload

Returns:

TRUE: If it is compressed version,
FALSE: If it is not compressed.

Definition at line 628 of file sei.c.

References Bitstream::bits_to_go, Bitstream::byte_buf, Bitstream::byte_pos, img_par::height, Bitstream::streamBuffer, syntaxelement::type, ue_linfo(), syntaxelement::value1, img_par::width, and writeSyntaxElement2Buf_UVLC().

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void free_drpm_buffer

(

DecRefPicMarking_t *

pDRPM

)

Free dec_ref_pic_marking_bufffer structure.

Definition at line 2729 of file sei.c.

void InitSubseqInfo	(	SEIParameters *	p_SEI,
		int	currLayer
	)

init subseqence info

Definition at line 858 of file sei.c.

References MAXRTPPAYLOADLEN, and no_mem_exit().

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void PrepareAggregationSEIMessage

(

ImageParameters *

p_Img

)

Prepare the aggregation sei message.

Date:

September 10, 2002

Author:

Dong Tian tian@cs.tut.fi

Definition at line 2597 of file sei.c.

References clear_sei_message(), ClearSubseqInfoPayload(), finalize_sei_message(), FinalizeSpareMBMap(), FinalizeSubseqInfo(), FinalizeSubseqLayerInfo(), img_par::layer, img_par::number, and write_sei_message().

Referenced by write_non_vcl_nalu().

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void UpdateSubseqInfo	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp,
		int	currLayer
	)

update subsequence info

Definition at line 885 of file sei.c.

References img_par::gop_number, inp_par_enc::no_frm_base, img_par::number, and inp_par_enc::NumberBFrames.

Referenced by write_non_vcl_nalu().