#include "libavcodec/get_bits.h"
#include "libavcodec/golomb.h"
#include "libavcodec/hevc/hevc.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "avc.h"
#include "avio.h"
#include "avio_internal.h"
#include "hevc.h"
#include "nal.h"

Data Structures
struct	HVCCNALUnit

struct	HVCCNALUnitArray

struct	HEVCDecoderConfigurationRecord

struct	HVCCProfileTierLevel

Macros
#define	MAX_SPATIAL_SEGMENTATION 4096

#define	FLAG_ARRAY_COMPLETENESS (1 << 0)

#define	FLAG_IS_NALFF (1 << 1)

#define	FLAG_IS_LHVC (1 << 2)

Enumerations
enum	{ VPS_INDEX, SPS_INDEX, PPS_INDEX, SEI_PREFIX_INDEX, SEI_SUFFIX_INDEX, NB_ARRAYS }

Functions
static void	hvcc_update_ptl (HEVCDecoderConfigurationRecord hvcc, HVCCProfileTierLevel ptl)

static void	hvcc_parse_ptl (GetBitContext gb, HEVCDecoderConfigurationRecord hvcc, unsigned int max_sub_layers_minus1)

static void	skip_sub_layer_hrd_parameters (GetBitContext *gb, unsigned int cpb_cnt_minus1, uint8_t sub_pic_hrd_params_present_flag)

static int	skip_hrd_parameters (GetBitContext *gb, uint8_t cprms_present_flag, unsigned int max_sub_layers_minus1)

static void	skip_timing_info (GetBitContext *gb)

static void	hvcc_parse_vui (GetBitContext gb, HEVCDecoderConfigurationRecord hvcc, unsigned int max_sub_layers_minus1)

static void	skip_sub_layer_ordering_info (GetBitContext *gb)

static int	hvcc_parse_vps (GetBitContext gb, HVCCNALUnit nal, HEVCDecoderConfigurationRecord *hvcc)

static void	skip_scaling_list_data (GetBitContext *gb)

static int	parse_rps (GetBitContext *gb, unsigned int rps_idx, unsigned int num_rps, unsigned int num_delta_pocs[HEVC_MAX_SHORT_TERM_REF_PIC_SETS])

static int	hvcc_parse_sps (GetBitContext gb, HVCCNALUnit nal, HEVCDecoderConfigurationRecord *hvcc)

static int	hvcc_parse_pps (GetBitContext gb, HVCCNALUnit nal, HEVCDecoderConfigurationRecord *hvcc)

static void	nal_unit_parse_header (GetBitContext gb, uint8_t nal_type, uint8_t *nuh_layer_id)

static int	hvcc_array_add_nal_unit (const uint8_t nal_buf, uint32_t nal_size, HVCCNALUnitArray array)

static int	hvcc_add_nal_unit (const uint8_t nal_buf, uint32_t nal_size, HEVCDecoderConfigurationRecord hvcc, int flags, unsigned array_idx)

static void	hvcc_init (HEVCDecoderConfigurationRecord *hvcc)

static void	hvcc_close (HEVCDecoderConfigurationRecord *hvcc)

static int	hvcc_write (AVIOContext pb, HEVCDecoderConfigurationRecord hvcc, int flags)

int	ff_hevc_annexb2mp4 (AVIOContext pb, const uint8_t buf_in, int size, int filter_ps, int *ps_count)
	Writes Annex B formatted HEVC NAL units to the provided AVIOContext. More...

int	ff_hevc_annexb2mp4_buf (const uint8_t buf_in, uint8_t buf_out, int size, int filter_ps, int *ps_count)
	Writes Annex B formatted HEVC NAL units to a data buffer. More...

static int	hvcc_parse_nal_unit (const uint8_t buf, uint32_t len, int type, HEVCDecoderConfigurationRecord hvcc, int flags)

static int	write_configuration_record (AVIOContext pb, const uint8_t data, int size, int flags)

int	ff_isom_write_hvcc (AVIOContext pb, const uint8_t data, int size, int ps_array_completeness)
	Writes HEVC extradata (parameter sets and declarative SEI NAL units with nuh_layer_id == 0, as a HEVCDecoderConfigurationRecord) to the provided AVIOContext. More...

int	ff_isom_write_lhvc (AVIOContext pb, const uint8_t data, int size, int ps_array_completeness)
	Writes L-HEVC extradata (parameter sets with nuh_layer_id > 0, as a LHEVCDecoderConfigurationRecord) to the provided AVIOContext. More...

Macro Definition Documentation

◆ MAX_SPATIAL_SEGMENTATION

#define MAX_SPATIAL_SEGMENTATION 4096

Definition at line 32 of file hevc.c.

◆ FLAG_ARRAY_COMPLETENESS

#define FLAG_ARRAY_COMPLETENESS (1 << 0)

Definition at line 44 of file hevc.c.

◆ FLAG_IS_NALFF

#define FLAG_IS_NALFF (1 << 1)

Definition at line 45 of file hevc.c.

◆ FLAG_IS_LHVC

#define FLAG_IS_LHVC (1 << 2)

Definition at line 46 of file hevc.c.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
VPS_INDEX
SPS_INDEX
PPS_INDEX
SEI_PREFIX_INDEX
SEI_SUFFIX_INDEX
NB_ARRAYS

Definition at line 34 of file hevc.c.

Function Documentation

◆ hvcc_update_ptl()

static void hvcc_update_ptl	(	HEVCDecoderConfigurationRecord *	hvcc,
		HVCCProfileTierLevel *	ptl
	)

static

Definition at line 96 of file hevc.c.

Referenced by hvcc_parse_ptl().

◆ hvcc_parse_ptl()

static void hvcc_parse_ptl	(	GetBitContext *	gb,
		HEVCDecoderConfigurationRecord *	hvcc,
		unsigned int	max_sub_layers_minus1
	)

static

Definition at line 150 of file hevc.c.

Referenced by hvcc_parse_sps(), and hvcc_parse_vps().

◆ skip_sub_layer_hrd_parameters()

static void skip_sub_layer_hrd_parameters	(	GetBitContext *	gb,
		unsigned int	cpb_cnt_minus1,
		uint8_t	sub_pic_hrd_params_present_flag
	)

static

Definition at line 199 of file hevc.c.

Referenced by skip_hrd_parameters().

◆ skip_hrd_parameters()

static int skip_hrd_parameters	(	GetBitContext *	gb,
		uint8_t	cprms_present_flag,
		unsigned int	max_sub_layers_minus1
	)

static

Definition at line 218 of file hevc.c.

Referenced by hvcc_parse_vui().

◆ skip_timing_info()

static void skip_timing_info ( GetBitContext * gb )

static

Definition at line 293 of file hevc.c.

Referenced by hvcc_parse_vui().

◆ hvcc_parse_vui()

static void hvcc_parse_vui	(	GetBitContext *	gb,
		HEVCDecoderConfigurationRecord *	hvcc,
		unsigned int	max_sub_layers_minus1
	)

static

Definition at line 302 of file hevc.c.

Referenced by hvcc_parse_sps().

◆ skip_sub_layer_ordering_info()

static void skip_sub_layer_ordering_info ( GetBitContext * gb )

static

Definition at line 380 of file hevc.c.

Referenced by hvcc_parse_sps().

◆ hvcc_parse_vps()

static int hvcc_parse_vps	(	GetBitContext *	gb,
		HVCCNALUnit *	nal,
		HEVCDecoderConfigurationRecord *	hvcc
	)

static

Definition at line 387 of file hevc.c.

Referenced by hvcc_add_nal_unit().

◆ skip_scaling_list_data()

static void skip_scaling_list_data ( GetBitContext * gb )

static

Definition at line 422 of file hevc.c.

Referenced by hvcc_parse_sps().

◆ parse_rps()

static int parse_rps	(	GetBitContext *	gb,
		unsigned int	rps_idx,
		unsigned int	num_rps,
		unsigned int	num_delta_pocs[HEVC_MAX_SHORT_TERM_REF_PIC_SETS]
	)

static

Definition at line 441 of file hevc.c.

Referenced by hvcc_parse_sps().

◆ hvcc_parse_sps()

static int hvcc_parse_sps	(	GetBitContext *	gb,
		HVCCNALUnit *	nal,
		HEVCDecoderConfigurationRecord *	hvcc
	)

static

Definition at line 508 of file hevc.c.

Referenced by hvcc_add_nal_unit().

◆ hvcc_parse_pps()

static int hvcc_parse_pps	(	GetBitContext *	gb,
		HVCCNALUnit *	nal,
		HEVCDecoderConfigurationRecord *	hvcc
	)

static

Definition at line 649 of file hevc.c.

Referenced by hvcc_add_nal_unit().

◆ nal_unit_parse_header()

static void nal_unit_parse_header	(	GetBitContext *	gb,
		uint8_t *	nal_type,
		uint8_t *	nuh_layer_id
	)

static

Definition at line 706 of file hevc.c.

Referenced by hvcc_add_nal_unit().

◆ hvcc_array_add_nal_unit()

static int hvcc_array_add_nal_unit	(	const uint8_t *	nal_buf,
		uint32_t	nal_size,
		HVCCNALUnitArray *	array
	)

static

Definition at line 720 of file hevc.c.

Referenced by hvcc_add_nal_unit().

◆ hvcc_add_nal_unit()

static int hvcc_add_nal_unit	(	const uint8_t *	nal_buf,
		uint32_t	nal_size,
		HEVCDecoderConfigurationRecord *	hvcc,
		int	flags,
		unsigned	array_idx
	)

static

Definition at line 739 of file hevc.c.

Referenced by hvcc_parse_nal_unit().

◆ hvcc_init()

static void hvcc_init ( HEVCDecoderConfigurationRecord * hvcc )

static

Definition at line 812 of file hevc.c.

Referenced by write_configuration_record().

◆ hvcc_close()

static void hvcc_close ( HEVCDecoderConfigurationRecord * hvcc )

static

Definition at line 832 of file hevc.c.

Referenced by write_configuration_record().

◆ hvcc_write()

static int hvcc_write	(	AVIOContext *	pb,
		HEVCDecoderConfigurationRecord *	hvcc,
		int	flags
	)

static

Definition at line 841 of file hevc.c.

Referenced by write_configuration_record().

◆ ff_hevc_annexb2mp4()

int ff_hevc_annexb2mp4	(	AVIOContext *	pb,
		const uint8_t *	buf_in,
		int	size,
		int	filter_ps,
		int *	ps_count
	)

Writes Annex B formatted HEVC NAL units to the provided AVIOContext.

The NAL units are converted to an MP4-compatible format (start code prefixes are replaced by 4-byte size fields, as per ISO/IEC 14496-15).

If filter_ps is non-zero, any HEVC parameter sets found in the input will be discarded, and *ps_count will be set to the number of discarded PS NAL units.

Parameters

pb	address of the AVIOContext where the data shall be written
buf_in	address of the buffer holding the input data
size	size (in bytes) of the input buffer
filter_ps	whether to write parameter set NAL units to the output (0) or to discard them (non-zero)
ps_count	address of the variable where the number of discarded parameter set NAL units shall be written, may be NULL

Returns: the amount (in bytes) of data written in case of success, a negative value corresponding to an AVERROR code in case of failure

Definition at line 1076 of file hevc.c.

Referenced by ff_hevc_annexb2mp4_buf(), and ff_mov_write_packet().

◆ ff_hevc_annexb2mp4_buf()

int ff_hevc_annexb2mp4_buf	(	const uint8_t *	buf_in,
		uint8_t **	buf_out,
		int *	size,
		int	filter_ps,
		int *	ps_count
	)

Writes Annex B formatted HEVC NAL units to a data buffer.

The NAL units are converted to an MP4-compatible format (start code prefixes are replaced by 4-byte size fields, as per ISO/IEC 14496-15).

If filter_ps is non-zero, any HEVC parameter sets found in the input will be discarded, and *ps_count will be set to the number of discarded PS NAL units.

On success, *size holds the size (in bytes) of the output data buffer.

Parameters

buf_in	address of the buffer holding the input data
size	address of the variable holding the size (in bytes) of the input buffer (on input) and of the output buffer (on success)
buf_out	on success, address of the variable holding the address of the output buffer
filter_ps	whether to write parameter set NAL units to the output (0) or to discard them (non-zero)
ps_count	address of the variable where the number of discarded parameter set NAL units shall be written, may be NULL

Returns: 0 in case of success, a negative value corresponding to an AVERROR code in case of failure

Note: *buf_out will be treated as uninitialized on input and won't be freed.

Definition at line 1124 of file hevc.c.

Referenced by ff_mov_write_packet(), and flv_write_packet().

◆ hvcc_parse_nal_unit()

static int hvcc_parse_nal_unit	(	const uint8_t *	buf,
		uint32_t	len,
		int	type,
		HEVCDecoderConfigurationRecord *	hvcc,
		int	flags
	)

static

Definition at line 1145 of file hevc.c.

Referenced by write_configuration_record().

◆ write_configuration_record()

static int write_configuration_record	(	AVIOContext *	pb,
		const uint8_t *	data,
		int	size,
		int	flags
	)

static

Definition at line 1165 of file hevc.c.

Referenced by ff_isom_write_hvcc(), and ff_isom_write_lhvc().

◆ ff_isom_write_hvcc()

int ff_isom_write_hvcc	(	AVIOContext *	pb,
		const uint8_t *	data,
		int	size,
		int	ps_array_completeness
	)

Writes HEVC extradata (parameter sets and declarative SEI NAL units with nuh_layer_id == 0, as a HEVCDecoderConfigurationRecord) to the provided AVIOContext.

If the extradata is Annex B format, it gets converted to hvcC format before writing.

Parameters

pb	address of the AVIOContext where the hvcC shall be written
data	address of the buffer holding the data needed to write the hvcC
size	size (in bytes) of the data buffer
ps_array_completeness	whether all parameter sets are in the hvcC (1) or there may be additional parameter sets in the bitstream (0)

Returns: >=0 in case of success, a negative value corresponding to an AVERROR code in case of failure

Definition at line 1273 of file hevc.c.

Referenced by flv_write_codec_header(), mkv_assemble_native_codecprivate(), and mov_write_hvcc_tag().

◆ ff_isom_write_lhvc()

int ff_isom_write_lhvc	(	AVIOContext *	pb,
		const uint8_t *	data,
		int	size,
		int	ps_array_completeness
	)

Writes L-HEVC extradata (parameter sets with nuh_layer_id > 0, as a LHEVCDecoderConfigurationRecord) to the provided AVIOContext.

If the extradata is Annex B format, it gets converted to lhvC format before writing. Otherwise, hvcC formated extradata is expected, not lhvC.

Parameters

pb	address of the AVIOContext where the lhvC shall be written
data	address of the buffer holding the data needed to write the lhvC
size	size (in bytes) of the data buffer
ps_array_completeness	whether all parameter sets are in the lhvC (1) or there may be additional parameter sets in the bitstream (0)

Returns: >=0 in case of success, a negative value corresponding to an AVERROR code in case of failure

Definition at line 1280 of file hevc.c.

Referenced by mov_write_lhvc_tag().

Data Structures

Macros

Enumerations

Functions

Macro Definition Documentation

◆ MAX_SPATIAL_SEGMENTATION

◆ FLAG_ARRAY_COMPLETENESS

◆ FLAG_IS_NALFF

◆ FLAG_IS_LHVC

Enumeration Type Documentation

◆ anonymous enum

Function Documentation

◆ hvcc_update_ptl()

◆ hvcc_parse_ptl()

◆ skip_sub_layer_hrd_parameters()

◆ skip_hrd_parameters()

◆ skip_timing_info()

◆ hvcc_parse_vui()

◆ skip_sub_layer_ordering_info()

◆ hvcc_parse_vps()

◆ skip_scaling_list_data()

◆ parse_rps()

◆ hvcc_parse_sps()

◆ hvcc_parse_pps()

◆ nal_unit_parse_header()

◆ hvcc_array_add_nal_unit()

◆ hvcc_add_nal_unit()

◆ hvcc_init()

◆ hvcc_close()

◆ hvcc_write()

◆ ff_hevc_annexb2mp4()

◆ ff_hevc_annexb2mp4_buf()

◆ hvcc_parse_nal_unit()

◆ write_configuration_record()

◆ ff_isom_write_hvcc()

◆ ff_isom_write_lhvc()