#include "cbs.h"
#include "cbs_h266.h"
#include "parser.h"

Data Structures
struct	PuInfo

struct	AuDetector

struct	VVCParserContext

Macros
#define	START_CODE 0x000001
	start_code_prefix_one_3bytes More...

#define	IS_IDR(nut) (nut == VVC_IDR_W_RADL \|\| nut == VVC_IDR_N_LP)

#define	IS_H266_SLICE(nut) (nut <= VVC_RASL_NUT \|\| (nut >= VVC_IDR_W_RADL && nut <= VVC_GDR_NUT))

Functions
static int	get_format (const H266RawSPS *sps)

static int	find_frame_end (AVCodecParserContext s, const uint8_t buf, int buf_size)
	Find the end of the current frame in the bitstream. More...

static int	get_pict_type (const CodedBitstreamFragment *pu)

static void	set_parser_ctx (AVCodecParserContext s, AVCodecContext avctx, const PuInfo *pu)

static void	get_slice_poc (VVCParserContext s, int poc, const H266RawSPS sps, const H266RawPictureHeader ph, const H266RawSliceHeader slice, void log_ctx)

static void	au_detector_init (AuDetector *d)

static int	is_au_start (VVCParserContext s, const PuInfo pu, void *log_ctx)

static int	get_pu_info (PuInfo info, const CodedBitstreamH266Context h266, const CodedBitstreamFragment pu, void logctx)

static int	append_au (AVPacket pkt, const uint8_t buf, int buf_size)

static int	parse_nal_units (AVCodecParserContext s, const uint8_t buf, int buf_size, AVCodecContext *avctx)
	Parse NAL units of found picture and decode some basic information. More...

static int	combine_au (AVCodecParserContext s, AVCodecContext avctx, const uint8_t *buf, int buf_size)
	Combine PU to AU. More...

static int	vvc_parser_parse (AVCodecParserContext s, AVCodecContext avctx, const uint8_t *poutbuf, int poutbuf_size, const uint8_t *buf, int buf_size)

static av_cold int	vvc_parser_init (AVCodecParserContext *s)

static av_cold void	vvc_parser_close (AVCodecParserContext *s)

Variables
static enum AVPixelFormat	pix_fmts_8bit []

static enum AVPixelFormat	pix_fmts_10bit []

static const CodedBitstreamUnitType	decompose_unit_types []

const AVCodecParser	ff_vvc_parser

Macro Definition Documentation

◆ START_CODE

#define START_CODE 0x000001

start_code_prefix_one_3bytes

Definition at line 27 of file vvc_parser.c.

◆ IS_IDR

#define IS_IDR ( nut ) (nut == VVC_IDR_W_RADL || nut == VVC_IDR_N_LP)

Definition at line 28 of file vvc_parser.c.

◆ IS_H266_SLICE

#define IS_H266_SLICE ( nut ) (nut <= VVC_RASL_NUT || (nut >= VVC_IDR_W_RADL && nut <= VVC_GDR_NUT))

Definition at line 29 of file vvc_parser.c.

Function Documentation

◆ get_format()

static int get_format ( const H266RawSPS * sps )

static

Definition at line 69 of file vvc_parser.c.

Referenced by set_parser_ctx().

◆ find_frame_end()

static int find_frame_end	(	AVCodecParserContext *	s,
		const uint8_t *	buf,
		int	buf_size
	)

static

Find the end of the current frame in the bitstream.

Returns: the position of the first byte of the next frame, or END_NOT_FOUND

Definition at line 84 of file vvc_parser.c.

Referenced by vvc_parser_parse().

◆ get_pict_type()

static int get_pict_type ( const CodedBitstreamFragment * pu )

static

Definition at line 128 of file vvc_parser.c.

Referenced by get_pu_info().

◆ set_parser_ctx()

static void set_parser_ctx	(	AVCodecParserContext *	s,
		AVCodecContext *	avctx,
		const PuInfo *	pu
	)

static

Definition at line 147 of file vvc_parser.c.

Referenced by parse_nal_units().

◆ get_slice_poc()

static void get_slice_poc	(	VVCParserContext *	s,
		int *	poc,
		const H266RawSPS *	sps,
		const H266RawPictureHeader *	ph,
		const H266RawSliceHeader *	slice,
		void *	log_ctx
	)

static

Definition at line 205 of file vvc_parser.c.

Referenced by is_au_start().

◆ au_detector_init()

static void au_detector_init ( AuDetector * d )

static

Definition at line 240 of file vvc_parser.c.

Referenced by vvc_parser_init().

◆ is_au_start()

static int is_au_start	(	VVCParserContext *	s,
		const PuInfo *	pu,
		void *	log_ctx
	)

static

Definition at line 247 of file vvc_parser.c.

Referenced by parse_nal_units().

◆ get_pu_info()

static int get_pu_info	(	PuInfo *	info,
		const CodedBitstreamH266Context *	h266,
		const CodedBitstreamFragment *	pu,
		void *	logctx
	)

static

Definition at line 272 of file vvc_parser.c.

Referenced by parse_nal_units().

◆ append_au()

static int append_au	(	AVPacket *	pkt,
		const uint8_t *	buf,
		int	buf_size
	)

static

Definition at line 325 of file vvc_parser.c.

Referenced by parse_nal_units().

◆ parse_nal_units()

static int parse_nal_units	(	AVCodecParserContext *	s,
		const uint8_t *	buf,
		int	buf_size,
		AVCodecContext *	avctx
	)

static

Parse NAL units of found picture and decode some basic information.

Parameters

s	parser context.
avctx	codec context.
buf	buffer with field/frame data.
buf_size	size of the buffer.

Returns: < 0 for error, == 0 for a complete au, > 0 is not a completed au.

Definition at line 345 of file vvc_parser.c.

Referenced by combine_au().

◆ combine_au()

static int combine_au	(	AVCodecParserContext *	s,
		AVCodecContext *	avctx,
		const uint8_t **	buf,
		int *	buf_size
	)

static

Combine PU to AU.

Parameters

s	parser context.
avctx	codec context.
buf	buffer to a PU.
buf_size	size of the buffer.

Returns: < 0 for error, == 0 a complete au, > 0 not a completed au.

Definition at line 393 of file vvc_parser.c.

Referenced by vvc_parser_parse().

◆ vvc_parser_parse()

static int vvc_parser_parse	(	AVCodecParserContext *	s,
		AVCodecContext *	avctx,
		const uint8_t **	poutbuf,
		int *	poutbuf_size,
		const uint8_t *	buf,
		int	buf_size
	)

static

Definition at line 415 of file vvc_parser.c.

◆ vvc_parser_init()

static av_cold int vvc_parser_init ( AVCodecParserContext * s )

static

Definition at line 483 of file vvc_parser.c.

◆ vvc_parser_close()

static av_cold void vvc_parser_close ( AVCodecParserContext * s )

static

Definition at line 499 of file vvc_parser.c.

Variable Documentation

◆ pix_fmts_8bit

enum AVPixelFormat pix_fmts_8bit[]

static

Initial value:

= {
    AV_PIX_FMT_GRAY8, AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P
}

Definition at line 59 of file vvc_parser.c.

Referenced by get_format().

◆ pix_fmts_10bit

enum AVPixelFormat pix_fmts_10bit[]

static

Initial value:

= {
    AV_PIX_FMT_GRAY10, AV_PIX_FMT_YUV420P10,
    AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10
}

Definition at line 64 of file vvc_parser.c.

Referenced by get_format().

◆ decompose_unit_types

const CodedBitstreamUnitType decompose_unit_types[]

static

Initial value:

= {
    VVC_TRAIL_NUT,
    VVC_STSA_NUT,
    VVC_RADL_NUT,
    VVC_RASL_NUT,
    VVC_IDR_W_RADL,
    VVC_IDR_N_LP,
    VVC_CRA_NUT,
    VVC_GDR_NUT,
    VVC_VPS_NUT,
    VVC_SPS_NUT,
    VVC_PPS_NUT,
    VVC_PH_NUT,
    VVC_AUD_NUT,
}

Definition at line 467 of file vvc_parser.c.

Referenced by vvc_parser_init().

◆ ff_vvc_parser

const AVCodecParser ff_vvc_parser

Initial value:

= {
    .codec_ids      = { AV_CODEC_ID_VVC },
    .priv_data_size = sizeof(VVCParserContext),
    .parser_init    = vvc_parser_init,
    .parser_close   = vvc_parser_close,
    .parser_parse   = vvc_parser_parse,
}

Definition at line 511 of file vvc_parser.c.

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ START_CODE

◆ IS_IDR

◆ IS_H266_SLICE

Function Documentation

◆ get_format()

◆ find_frame_end()

◆ get_pict_type()

◆ set_parser_ctx()

◆ get_slice_poc()

◆ au_detector_init()

◆ is_au_start()

◆ get_pu_info()

◆ append_au()

◆ parse_nal_units()

◆ combine_au()

◆ vvc_parser_parse()

◆ vvc_parser_init()

◆ vvc_parser_close()

Variable Documentation

◆ pix_fmts_8bit

◆ pix_fmts_10bit

◆ decompose_unit_types

◆ ff_vvc_parser