cbs_internal.h File Reference

#include <stdint.h>
#include "libavutil/buffer.h"
#include "libavutil/log.h"
#include "cbs.h"
#include "codec_id.h"
#include "get_bits.h"
#include "put_bits.h"

Go to the source code of this file.

Data Structures
struct	CodedBitstreamUnitTypeDescriptor
struct	CodedBitstreamType

Macros
#define	MAX_UINT_BITS(length)   ((UINT64_C(1) << (length)) - 1)
#define	MAX_INT_BITS(length)   ((INT64_C(1) << ((length) - 1)) - 1)
#define	MIN_INT_BITS(length)   (-(INT64_C(1) << ((length) - 1)))
#define	TYPE_LIST(...)   { __VA_ARGS__ }
#define	CBS_UNIT_TYPE_POD(type_, structure)
#define	CBS_UNIT_RANGE_POD(range_start, range_end, structure)
#define	CBS_UNIT_TYPES_INTERNAL_REF(types, structure, ref_field)
#define	CBS_UNIT_TYPE_INTERNAL_REF(type, structure, ref_field)   CBS_UNIT_TYPES_INTERNAL_REF((type), structure, ref_field)
#define	CBS_UNIT_RANGE_INTERNAL_REF(range_start, range_end, structure, ref_field)
#define	CBS_UNIT_TYPES_COMPLEX(types, structure, free_func)
#define	CBS_UNIT_TYPE_COMPLEX(type, structure, free_func)   CBS_UNIT_TYPES_COMPLEX((type), structure, free_func)
#define	CBS_UNIT_TYPE_END_OF_LIST   { .nb_unit_types = 0 }

Enumerations
enum	CBSContentType { CBS_CONTENT_TYPE_INTERNAL_REFS, CBS_CONTENT_TYPE_COMPLEX }
enum	{ CBS_MAX_LIST_UNIT_TYPES = 3, CBS_MAX_REF_OFFSETS = 2, CBS_UNIT_TYPE_RANGE = -1 }

Functions
void	ff_cbs_trace_header (CodedBitstreamContext *ctx, const char *name)
void	ff_cbs_trace_syntax_element (CodedBitstreamContext *ctx, int position, const char *name, const int *subscripts, const char *bitstring, int64_t value)
int	ff_cbs_read_unsigned (CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, uint32_t *write_to, uint32_t range_min, uint32_t range_max)
int	ff_cbs_write_unsigned (CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, uint32_t value, uint32_t range_min, uint32_t range_max)
int	ff_cbs_read_signed (CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, int32_t *write_to, int32_t range_min, int32_t range_max)
int	ff_cbs_write_signed (CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, int32_t value, int32_t range_min, int32_t range_max)

Variables
const CodedBitstreamType	ff_cbs_type_av1
const CodedBitstreamType	ff_cbs_type_h264
const CodedBitstreamType	ff_cbs_type_h265
const CodedBitstreamType	ff_cbs_type_jpeg
const CodedBitstreamType	ff_cbs_type_mpeg2
const CodedBitstreamType	ff_cbs_type_vp9

Macro Definition Documentation

MAX_UINT_BITS

#define MAX_UINT_BITS

(

length

)

((UINT64_C(1) << (length)) - 1)

Definition at line 184 of file cbs_internal.h.

MAX_INT_BITS

#define MAX_INT_BITS

(

length

)

((INT64_C(1) << ((length) - 1)) - 1)

Definition at line 188 of file cbs_internal.h.

MIN_INT_BITS

#define MIN_INT_BITS

(

length

)

(-(INT64_C(1) << ((length) - 1)))

Definition at line 192 of file cbs_internal.h.

TYPE_LIST

#define TYPE_LIST

(

...

)

{ __VA_ARGS__ }

Definition at line 194 of file cbs_internal.h.

CBS_UNIT_TYPE_POD

#define CBS_UNIT_TYPE_POD	(		type_,
			structure
	)

Value:

        { \
        .nb_unit_types  = 1, \
        .unit_type.list = { type_ }, \
        .content_type   = CBS_CONTENT_TYPE_INTERNAL_REFS, \
        .content_size   = sizeof(structure), \
        .type.ref       = { .nb_offsets = 0 }, \
    }

Definition at line 195 of file cbs_internal.h.

CBS_UNIT_RANGE_POD

#define CBS_UNIT_RANGE_POD	(		range_start,
			range_end,
			structure
	)

Value:

        { \
        .nb_unit_types         = CBS_UNIT_TYPE_RANGE, \
        .unit_type.range.start = range_start, \
        .unit_type.range.end   = range_end, \
        .content_type          = CBS_CONTENT_TYPE_INTERNAL_REFS, \
        .content_size          = sizeof(structure), \
        .type.ref              = { .nb_offsets = 0 }, \
    }

Definition at line 202 of file cbs_internal.h.

CBS_UNIT_TYPES_INTERNAL_REF

#define CBS_UNIT_TYPES_INTERNAL_REF	(		types,
			structure,
			ref_field
	)

Value:

        { \
        .nb_unit_types  = FF_ARRAY_ELEMS((CodedBitstreamUnitType[])TYPE_LIST types), \
        .unit_type.list = TYPE_LIST types, \
        .content_type   = CBS_CONTENT_TYPE_INTERNAL_REFS, \
        .content_size   = sizeof(structure), \
        .type.ref       = { .nb_offsets = 1, \
                            .offsets    = { offsetof(structure, ref_field) } }, \
    }

Definition at line 211 of file cbs_internal.h.

CBS_UNIT_TYPE_INTERNAL_REF

#define CBS_UNIT_TYPE_INTERNAL_REF	(		type,
			structure,
			ref_field
	)		CBS_UNIT_TYPES_INTERNAL_REF((type), structure, ref_field)

Definition at line 219 of file cbs_internal.h.

CBS_UNIT_RANGE_INTERNAL_REF

#define CBS_UNIT_RANGE_INTERNAL_REF	(		range_start,
			range_end,
			structure,
			ref_field
	)

Value:

        { \
        .nb_unit_types         = CBS_UNIT_TYPE_RANGE, \
        .unit_type.range.start = range_start, \
        .unit_type.range.end   = range_end, \
        .content_type          = CBS_CONTENT_TYPE_INTERNAL_REFS, \
        .content_size          = sizeof(structure), \
        .type.ref = { .nb_offsets = 1, \
                      .offsets    = { offsetof(structure, ref_field) } }, \
    }

Definition at line 222 of file cbs_internal.h.

CBS_UNIT_TYPES_COMPLEX

#define CBS_UNIT_TYPES_COMPLEX	(		types,
			structure,
			free_func
	)

Value:

        { \
        .nb_unit_types  = FF_ARRAY_ELEMS((CodedBitstreamUnitType[])TYPE_LIST types), \
        .unit_type.list = TYPE_LIST types, \
        .content_type   = CBS_CONTENT_TYPE_COMPLEX, \
        .content_size   = sizeof(structure), \
        .type.complex   = { .content_free = free_func }, \
    }

Definition at line 232 of file cbs_internal.h.

CBS_UNIT_TYPE_COMPLEX

#define CBS_UNIT_TYPE_COMPLEX	(		type,
			structure,
			free_func
	)		CBS_UNIT_TYPES_COMPLEX((type), structure, free_func)

Definition at line 239 of file cbs_internal.h.

CBS_UNIT_TYPE_END_OF_LIST

#define CBS_UNIT_TYPE_END_OF_LIST   { .nb_unit_types = 0 }

Definition at line 242 of file cbs_internal.h.

Enumeration Type Documentation

CBSContentType

enum CBSContentType

Enumerator
CBS_CONTENT_TYPE_INTERNAL_REFS
CBS_CONTENT_TYPE_COMPLEX

Definition at line 33 of file cbs_internal.h.

anonymous enum

anonymous enum

Enumerator
CBS_MAX_LIST_UNIT_TYPES
CBS_MAX_REF_OFFSETS
CBS_UNIT_TYPE_RANGE

Definition at line 43 of file cbs_internal.h.

Function Documentation

ff_cbs_trace_header()

void ff_cbs_trace_header	(	CodedBitstreamContext *	ctx,
		const char *	name
	)

Definition at line 484 of file cbs.c.

ff_cbs_trace_syntax_element()

void ff_cbs_trace_syntax_element	(	CodedBitstreamContext *	ctx,
		int	position,
		const char *	name,
		const int *	subscripts,
		const char *	bitstring,
		int64_t	value
	)

Definition at line 493 of file cbs.c.

Referenced by cbs_av1_read_increment(), cbs_av1_read_leb128(), cbs_av1_read_ns(), cbs_av1_read_subexp(), cbs_av1_read_uvlc(), cbs_av1_write_increment(), cbs_av1_write_leb128(), cbs_av1_write_ns(), cbs_av1_write_subexp(), cbs_av1_write_uvlc(), cbs_read_se_golomb(), cbs_read_ue_golomb(), cbs_vp9_read_increment(), cbs_vp9_read_le(), cbs_vp9_read_s(), cbs_vp9_write_increment(), cbs_vp9_write_le(), cbs_vp9_write_s(), cbs_write_se_golomb(), cbs_write_ue_golomb(), ff_cbs_read_signed(), ff_cbs_read_unsigned(), ff_cbs_write_signed(), and ff_cbs_write_unsigned().

ff_cbs_read_unsigned()

int ff_cbs_read_unsigned	(	CodedBitstreamContext *	ctx,
		GetBitContext *	gbc,
		int	width,
		const char *	name,
		const int *	subscripts,
		uint32_t *	write_to,
		uint32_t	range_min,
		uint32_t	range_max
	)

Definition at line 543 of file cbs.c.

Referenced by cbs_av1_read_leb128(), and cbs_av1_read_subexp().

ff_cbs_write_unsigned()

int ff_cbs_write_unsigned	(	CodedBitstreamContext *	ctx,
		PutBitContext *	pbc,
		int	width,
		const char *	name,
		const int *	subscripts,
		uint32_t	value,
		uint32_t	range_min,
		uint32_t	range_max
	)

Definition at line 586 of file cbs.c.

Referenced by cbs_av1_write_leb128(), and cbs_av1_write_subexp().

ff_cbs_read_signed()

int ff_cbs_read_signed	(	CodedBitstreamContext *	ctx,
		GetBitContext *	gbc,
		int	width,
		const char *	name,
		const int *	subscripts,
		int32_t *	write_to,
		int32_t	range_min,
		int32_t	range_max
	)

Definition at line 622 of file cbs.c.

ff_cbs_write_signed()

int ff_cbs_write_signed	(	CodedBitstreamContext *	ctx,
		PutBitContext *	pbc,
		int	width,
		const char *	name,
		const int *	subscripts,
		int32_t	value,
		int32_t	range_min,
		int32_t	range_max
	)

Definition at line 665 of file cbs.c.

Variable Documentation

ff_cbs_type_av1

const CodedBitstreamType ff_cbs_type_av1

Definition at line 1351 of file cbs_av1.c.

ff_cbs_type_h264

const CodedBitstreamType ff_cbs_type_h264

Definition at line 1434 of file cbs_h2645.c.

ff_cbs_type_h265

const CodedBitstreamType ff_cbs_type_h265

Definition at line 1450 of file cbs_h2645.c.

ff_cbs_type_jpeg

const CodedBitstreamType ff_cbs_type_jpeg

Definition at line 435 of file cbs_jpeg.c.

ff_cbs_type_mpeg2

const CodedBitstreamType ff_cbs_type_mpeg2

Definition at line 416 of file cbs_mpeg2.c.

ff_cbs_type_vp9

const CodedBitstreamType ff_cbs_type_vp9

Definition at line 648 of file cbs_vp9.c.