FFmpeg
Data Structures | Macros | Enumerations | Functions
cbs_internal.h File Reference
#include <stddef.h>
#include <stdint.h>
#include "config.h"
#include "libavutil/log.h"
#include "cbs.h"
#include "codec_id.h"
#include "get_bits.h"
#include "put_bits.h"
#include "libavutil/refstruct.h"

Go to the source code of this file.

Data Structures

struct   CodedBitstreamUnitTypeDescriptor
 
struct   CodedBitstreamType
 

Macros

#define  CBS_READ   1
 
#define  CBS_WRITE   1
 
#define  CBS_TRACE   1
 
#define  CBS_APV   CONFIG_CBS_APV
 
#define  CBS_AV1   CONFIG_CBS_AV1
 
#define  CBS_H264   CONFIG_CBS_H264
 
#define  CBS_H265   CONFIG_CBS_H265
 
#define  CBS_H266   CONFIG_CBS_H266
 
#define  CBS_JPEG   CONFIG_CBS_JPEG
 
#define  CBS_MPEG2   CONFIG_CBS_MPEG2
 
#define  CBS_VP8   CONFIG_CBS_VP8
 
#define  CBS_VP9   CONFIG_CBS_VP9
 
#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  CBS_TRACE_READ_START()
 
#define  CBS_TRACE_READ_END()
 
#define  CBS_TRACE_READ_END_NO_SUBSCRIPTS()
 
#define  CBS_TRACE_READ_END_VALUE_ONLY()
 
#define  CBS_TRACE_WRITE_START()
 
#define  CBS_TRACE_WRITE_END()
 
#define  CBS_TRACE_WRITE_END_NO_SUBSCRIPTS()
 
#define  CBS_TRACE_WRITE_END_VALUE_ONLY()
 
#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 CBS_FUNC()  trace_header (CodedBitstreamContext *ctx, const char *name)
 
int CBS_FUNC()  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 CBS_FUNC()  read_simple_unsigned (CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, uint32_t *write_to)
 
int CBS_FUNC()  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 CBS_FUNC()  write_simple_unsigned (CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, uint32_t value)
 
int CBS_FUNC()  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 CBS_FUNC()  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)
 
const CodedBitstreamType  CBS_FUNC (type_apv)
 
const CodedBitstreamType  CBS_FUNC (type_av1)
 
const CodedBitstreamType  CBS_FUNC (type_h264)
 
const CodedBitstreamType  CBS_FUNC (type_h265)
 
const CodedBitstreamType  CBS_FUNC (type_h266)
 
const CodedBitstreamType  CBS_FUNC (type_jpeg)
 
const CodedBitstreamType  CBS_FUNC (type_mpeg2)
 
const CodedBitstreamType  CBS_FUNC (type_vp8)
 
const CodedBitstreamType  CBS_FUNC (type_vp9)
 

Macro Definition Documentation

◆ CBS_READ

#define CBS_READ   1

Definition at line 36 of file cbs_internal.h.

◆ CBS_WRITE

#define CBS_WRITE   1

Definition at line 39 of file cbs_internal.h.

◆ CBS_TRACE

#define CBS_TRACE   1

Definition at line 42 of file cbs_internal.h.

◆ CBS_APV

#define CBS_APV   CONFIG_CBS_APV

Definition at line 46 of file cbs_internal.h.

◆ CBS_AV1

#define CBS_AV1   CONFIG_CBS_AV1

Definition at line 49 of file cbs_internal.h.

◆ CBS_H264

#define CBS_H264   CONFIG_CBS_H264

Definition at line 52 of file cbs_internal.h.

◆ CBS_H265

#define CBS_H265   CONFIG_CBS_H265

Definition at line 55 of file cbs_internal.h.

◆ CBS_H266

#define CBS_H266   CONFIG_CBS_H266

Definition at line 58 of file cbs_internal.h.

◆ CBS_JPEG

#define CBS_JPEG   CONFIG_CBS_JPEG

Definition at line 61 of file cbs_internal.h.

◆ CBS_MPEG2

#define CBS_MPEG2   CONFIG_CBS_MPEG2

Definition at line 64 of file cbs_internal.h.

◆ CBS_VP8

#define CBS_VP8   CONFIG_CBS_VP8

Definition at line 67 of file cbs_internal.h.

◆ CBS_VP9

#define CBS_VP9   CONFIG_CBS_VP9

Definition at line 70 of file cbs_internal.h.

◆ MAX_UINT_BITS

#define MAX_UINT_BITS (   length )    ((UINT64_C(1) << (length)) - 1)

Definition at line 235 of file cbs_internal.h.

◆ MAX_INT_BITS

#define MAX_INT_BITS (   length )    ((INT64_C(1) << ((length) - 1)) - 1)

Definition at line 239 of file cbs_internal.h.

◆ MIN_INT_BITS

#define MIN_INT_BITS (   length )    (-(INT64_C(1) << ((length) - 1)))

Definition at line 243 of file cbs_internal.h.

◆ CBS_TRACE_READ_START

#define CBS_TRACE_READ_START ( )
Value:
GetBitContext trace_start; \
do { \
if (ctx->trace_enable) \
trace_start = *gbc; \
} while (0)

Definition at line 248 of file cbs_internal.h.

◆ CBS_TRACE_READ_END

#define CBS_TRACE_READ_END ( )
Value:
do { \
if (ctx->trace_enable) { \
int start_position = get_bits_count(&trace_start); \
int end_position = get_bits_count(gbc); \
av_assert0(start_position <= end_position); \
ctx->trace_read_callback(ctx->trace_context, &trace_start, \
end_position - start_position, \
name, subscripts, value); \
} \
} while (0)

Definition at line 256 of file cbs_internal.h.

◆ CBS_TRACE_READ_END_NO_SUBSCRIPTS

#define CBS_TRACE_READ_END_NO_SUBSCRIPTS ( )
Value:
do { \
const int *subscripts = NULL; \
CBS_TRACE_READ_END(); \
} while (0)

Definition at line 269 of file cbs_internal.h.

◆ CBS_TRACE_READ_END_VALUE_ONLY

#define CBS_TRACE_READ_END_VALUE_ONLY ( )
Value:
do { \
if (ctx->trace_enable) { \
ctx->trace_read_callback(ctx->trace_context, &trace_start, 0, \
name, subscripts, value); \
} \
} while (0)

Definition at line 277 of file cbs_internal.h.

◆ CBS_TRACE_WRITE_START

#define CBS_TRACE_WRITE_START ( )
Value:
int start_position; \
do { \
if (ctx->trace_enable) \
start_position = put_bits_count(pbc);; \
} while (0)

Definition at line 286 of file cbs_internal.h.

◆ CBS_TRACE_WRITE_END

#define CBS_TRACE_WRITE_END ( )
Value:
do { \
if (ctx->trace_enable) { \
int end_position = put_bits_count(pbc); \
av_assert0(start_position <= end_position); \
ctx->trace_write_callback(ctx->trace_context, pbc, \
end_position - start_position, \
name, subscripts, value); \
} \
} while (0)

Definition at line 294 of file cbs_internal.h.

◆ CBS_TRACE_WRITE_END_NO_SUBSCRIPTS

#define CBS_TRACE_WRITE_END_NO_SUBSCRIPTS ( )
Value:
do { \
const int *subscripts = NULL; \
CBS_TRACE_WRITE_END(); \
} while (0)

Definition at line 306 of file cbs_internal.h.

◆ CBS_TRACE_WRITE_END_VALUE_ONLY

#define CBS_TRACE_WRITE_END_VALUE_ONLY ( )
Value:
do { \
if (ctx->trace_enable) { \
PutBitContext tmp; \
init_put_bits(&tmp, pbc->buf, start_position); \
skip_put_bits(&tmp, start_position); \
ctx->trace_write_callback(ctx->trace_context, &tmp, 0, \
name, subscripts, value); \
} \
} while (0)

Definition at line 316 of file cbs_internal.h.

◆ TYPE_LIST

#define TYPE_LIST (   ... )    { __VA_ARGS__ }

Definition at line 338 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 339 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 346 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 355 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 363 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 366 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 376 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 383 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 386 of file cbs_internal.h.

Enumeration Type Documentation

◆ CBSContentType

enum CBSContentType
Enumerator
CBS_CONTENT_TYPE_INTERNAL_REFS 
CBS_CONTENT_TYPE_COMPLEX 

Definition at line 73 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 83 of file cbs_internal.h.

Function Documentation

◆ trace_header()

void CBS_FUNC() trace_header ( CodedBitstreamContext *  ctx,
const char *  name 
)

Definition at line 509 of file cbs.c.

◆ read_unsigned()

int CBS_FUNC() 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 648 of file cbs.c.

◆ read_simple_unsigned()

int CBS_FUNC() read_simple_unsigned ( CodedBitstreamContext *  ctx,
GetBitContext *  gbc,
int  width,
const char *  name,
uint32_t *  write_to 
)

Definition at line 657 of file cbs.c.

Referenced by cbs_av1_read_subexp().

◆ write_unsigned()

int CBS_FUNC() 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 666 of file cbs.c.

Referenced by write_simple_unsigned().

◆ write_simple_unsigned()

int CBS_FUNC() write_simple_unsigned ( CodedBitstreamContext *  ctx,
PutBitContext *  pbc,
int  width,
const char *  name,
uint32_t  value 
)

Definition at line 692 of file cbs.c.

Referenced by cbs_av1_write_subexp().

◆ read_signed()

int CBS_FUNC() 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 701 of file cbs.c.

◆ write_signed()

int CBS_FUNC() 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 735 of file cbs.c.

◆ CBS_FUNC() [1/9]

const CodedBitstreamType CBS_FUNC ( type_apv  )

◆ CBS_FUNC() [2/9]

const CodedBitstreamType CBS_FUNC ( type_av1  )

◆ CBS_FUNC() [3/9]

const CodedBitstreamType CBS_FUNC ( type_h264  )

◆ CBS_FUNC() [4/9]

const CodedBitstreamType CBS_FUNC ( type_h265  )

◆ CBS_FUNC() [5/9]

const CodedBitstreamType CBS_FUNC ( type_h266  )

◆ CBS_FUNC() [6/9]

const CodedBitstreamType CBS_FUNC ( type_jpeg  )

◆ CBS_FUNC() [7/9]

const CodedBitstreamType CBS_FUNC ( type_mpeg2  )

◆ CBS_FUNC() [8/9]

const CodedBitstreamType CBS_FUNC ( type_vp8  )

◆ CBS_FUNC() [9/9]

const CodedBitstreamType CBS_FUNC ( type_vp9  )
CBS_UNIT_TYPE_RANGE
@ CBS_UNIT_TYPE_RANGE
Definition: cbs_internal.h:92
name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
get_bits_count
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:254
GetBitContext
Definition: get_bits.h:109
CBS_CONTENT_TYPE_INTERNAL_REFS
@ CBS_CONTENT_TYPE_INTERNAL_REFS
Definition: cbs_internal.h:77
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
CodedBitstreamUnitType
uint32_t CodedBitstreamUnitType
The codec-specific type of a bitstream unit.
Definition: cbs.h:54
ctx
AVFormatContext * ctx
Definition: movenc.c:49
tmp
static uint8_t tmp[40]
Definition: aes_ctr.c:52
NULL
#define NULL
Definition: coverity.c:32
CBS_CONTENT_TYPE_COMPLEX
@ CBS_CONTENT_TYPE_COMPLEX
Definition: cbs_internal.h:80
TYPE_LIST
#define TYPE_LIST(...)
Definition: cbs_internal.h:338
put_bits_count
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:90
value
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
Definition: writing_filters.txt:86
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