#include <string.h>
#include "config.h"
#include "libavutil/intmath.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "bytestream.h"
#include "hevc.h"
#include "h264.h"
#include "h2645_parse.h"
#include "vvc.h"

Macros
#define	STARTCODE_TEST

Functions
int	ff_h2645_extract_rbsp (const uint8_t src, int length, H2645RBSP rbsp, H2645NAL *nal, int small_padding)
	Extract the raw (unescaped) bitstream. More...

static const char *	vvc_nal_unit_name (int nal_type)

static const char *	hevc_nal_unit_name (int nal_type)

static const char *	h264_nal_unit_name (int nal_type)

static int	get_bit_length (H2645NAL *nal, int min_size, int skip_trailing_zeros)

static int	vvc_parse_nal_header (H2645NAL nal, void logctx)

static int	hevc_parse_nal_header (H2645NAL nal, void logctx)

static int	h264_parse_nal_header (H2645NAL nal, void logctx)

static int	find_next_start_code (const uint8_t buf, const uint8_t next_avc)

static void	alloc_rbsp_buffer (H2645RBSP *rbsp, unsigned int size, int use_ref)

int	ff_h2645_packet_split (H2645Packet pkt, const uint8_t buf, int length, void *logctx, int is_nalff, int nal_length_size, enum AVCodecID codec_id, int small_padding, int use_ref)
	Split an input packet into NAL units. More...

void	ff_h2645_packet_uninit (H2645Packet *pkt)
	Free all the allocated memory in the packet. More...

Variables
static const char *const	vvc_nal_type_name [32]

static const char *const	hevc_nal_type_name [64]

static const char *const	h264_nal_type_name [32]

Macro Definition Documentation

◆ STARTCODE_TEST

#define STARTCODE_TEST

Value:

        if (i + 2 < length && src[i + 1] == 0 &&                        \
           (src[i + 2] == 3 || src[i + 2] == 1)) {                      \
            if (src[i + 2] == 1) {                                      \
                /* startcode, so we must be past the end */             \
                length = i;                                             \
            }                                                           \
            break;                                                      \
        }

Function Documentation

◆ ff_h2645_extract_rbsp()

int ff_h2645_extract_rbsp	(	const uint8_t *	src,
		int	length,
		H2645RBSP *	rbsp,
		H2645NAL *	nal,
		int	small_padding
	)

Extract the raw (unescaped) bitstream.

Definition at line 35 of file h2645_parse.c.

Referenced by ff_h2645_packet_split(), generate_fake_vps(), and parse_nal_units().

◆ vvc_nal_unit_name()

static const char* vvc_nal_unit_name ( int nal_type )

static

Definition at line 185 of file h2645_parse.c.

Referenced by vvc_parse_nal_header().

◆ hevc_nal_unit_name()

static const char* hevc_nal_unit_name ( int nal_type )

static

Definition at line 258 of file h2645_parse.c.

Referenced by hevc_parse_nal_header().

◆ h264_nal_unit_name()

static const char* h264_nal_unit_name ( int nal_type )

static

Definition at line 299 of file h2645_parse.c.

Referenced by h264_parse_nal_header().

◆ get_bit_length()

static int get_bit_length	(	H2645NAL *	nal,
		int	min_size,
		int	skip_trailing_zeros
	)

static

Definition at line 305 of file h2645_parse.c.

Referenced by ff_h2645_packet_split().

◆ vvc_parse_nal_header()

static int vvc_parse_nal_header	(	H2645NAL *	nal,
		void *	logctx
	)

static

Returns: AVERROR_INVALIDDATA if the packet is not a valid NAL unit, 0 otherwise

Definition at line 339 of file h2645_parse.c.

Referenced by ff_h2645_packet_split().

◆ hevc_parse_nal_header()

static int hevc_parse_nal_header	(	H2645NAL *	nal,
		void *	logctx
	)

static

Definition at line 364 of file h2645_parse.c.

Referenced by ff_h2645_packet_split().

◆ h264_parse_nal_header()

static int h264_parse_nal_header	(	H2645NAL *	nal,
		void *	logctx
	)

static

Definition at line 385 of file h2645_parse.c.

Referenced by ff_h2645_packet_split().

◆ find_next_start_code()

static int find_next_start_code	(	const uint8_t *	buf,
		const uint8_t *	next_avc
	)

static

Definition at line 402 of file h2645_parse.c.

Referenced by ff_h2645_packet_split().

◆ alloc_rbsp_buffer()

static void alloc_rbsp_buffer	(	H2645RBSP *	rbsp,
		unsigned int	size,
		int	use_ref
	)

static

Definition at line 417 of file h2645_parse.c.

Referenced by ff_h2645_packet_split().

◆ ff_h2645_packet_split()

int ff_h2645_packet_split	(	H2645Packet *	pkt,
		const uint8_t *	buf,
		int	length,
		void *	logctx,
		int	is_nalff,
		int	nal_length_size,
		enum AVCodecID	codec_id,
		int	small_padding,
		int	use_ref
	)

Split an input packet into NAL units.

If data == raw_data holds true for a NAL unit of the returned pkt, then said NAL unit does not contain any emulation_prevention_three_byte and the data is contained in the input buffer pointed to by buf. Otherwise, the unescaped data is part of the rbsp_buffer described by the packet's H2645RBSP.

If the packet's rbsp_buffer_ref is not NULL, the underlying AVBuffer must own rbsp_buffer. If not and rbsp_buffer is not NULL, use_ref must be 0. If use_ref is set, rbsp_buffer will be reference-counted and owned by the underlying AVBuffer of rbsp_buffer_ref.

Definition at line 464 of file h2645_parse.c.

Referenced by cbs_h2645_split_fragment(), decode_extradata_ps(), decode_nal_units(), extract_extradata_h2645(), hevc_decode_nal_units(), and parse_nal_units().

◆ ff_h2645_packet_uninit()

void ff_h2645_packet_uninit ( H2645Packet * pkt )

Free all the allocated memory in the packet.

Definition at line 598 of file h2645_parse.c.

Referenced by cbs_h264_close(), cbs_h265_close(), cbs_h266_close(), decode_extradata_ps(), extract_extradata_close(), h264_decode_end(), hevc_decode_free(), hevc_decode_nal_units(), and hevc_parser_close().

Variable Documentation

◆ vvc_nal_type_name

const char* const vvc_nal_type_name[32]

static

Definition at line 150 of file h2645_parse.c.

Referenced by vvc_nal_unit_name().

◆ hevc_nal_type_name

const char* const hevc_nal_type_name[64]

static

Definition at line 191 of file h2645_parse.c.

Referenced by hevc_nal_unit_name().

◆ h264_nal_type_name

const char* const h264_nal_type_name[32]

static

Definition at line 264 of file h2645_parse.c.

Referenced by h264_nal_unit_name().

Macros

Functions

Variables

Macro Definition Documentation

◆ STARTCODE_TEST

Function Documentation

◆ ff_h2645_extract_rbsp()

◆ vvc_nal_unit_name()

◆ hevc_nal_unit_name()

◆ h264_nal_unit_name()

◆ get_bit_length()

◆ vvc_parse_nal_header()

◆ hevc_parse_nal_header()

◆ h264_parse_nal_header()

◆ find_next_start_code()

◆ alloc_rbsp_buffer()

◆ ff_h2645_packet_split()

◆ ff_h2645_packet_uninit()

Variable Documentation

◆ vvc_nal_type_name

◆ hevc_nal_type_name

◆ h264_nal_type_name