opt.c File Reference

AVOptions. More...

#include "avutil.h"
#include "avassert.h"
#include "avstring.h"
#include "channel_layout.h"
#include "dict.h"
#include "eval.h"
#include "log.h"
#include "mem.h"
#include "parseutils.h"
#include "pixdesc.h"
#include "mathematics.h"
#include "opt.h"
#include "samplefmt.h"
#include "bprint.h"
#include <float.h>

Go to the source code of this file.

Macros
#define	TYPE_BASE(type)
#define	DEFAULT_NUMVAL(opt)
#define	OPT_EVAL_NUMBER(name, opttype, vartype)
#define	WHITESPACES   " \n\t\r"

Functions
const AVOption *	av_opt_next (const void *obj, const AVOption *last)
	Iterate over all AVOptions belonging to obj.
static int	opt_is_pod (enum AVOptionType type)
static uint8_t	opt_array_sep (const AVOption *o)
static void *	opt_array_pelem (const AVOption *o, void *array, unsigned idx)
static unsigned *	opt_array_pcount (const void *parray)
static void	opt_free_elem (enum AVOptionType type, void *ptr)
static void	opt_free_array (const AVOption *o, void *parray, unsigned *count)
static int	opt_set_init (void *obj, const char *name, int search_flags, int require_type, void **ptgt, const AVOption **po, void **pdst)
	Perform common setup for option-setting functions.
static AVRational	double_to_rational (double d)
static int	read_number (const AVOption *o, const void *dst, double *num, int *den, int64_t *intnum)
static int	write_number (void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
static int	hexchar2int (char c)
static int	set_string_binary (void *obj, const AVOption *o, const char *val, uint8_t **dst)
static int	set_string (void *obj, const AVOption *o, const char *val, uint8_t **dst)
static int	set_string_number (void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
static int	set_string_image_size (void *obj, const AVOption *o, const char *val, int *dst)
static int	set_string_video_rate (void *obj, const AVOption *o, const char *val, AVRational *dst)
static int	set_string_color (void *obj, const AVOption *o, const char *val, uint8_t *dst)
static const char *	get_bool_name (int val)
static int	set_string_bool (void *obj, const AVOption *o, const char *val, int *dst)
static int	set_string_fmt (void *obj, const AVOption *o, const char *val, uint8_t *dst, int fmt_nb, int((*get_fmt)(const char *)), const char *desc, enum AVOptionType type)
static int	get_pix_fmt (const char *name)
static int	set_string_pixel_fmt (void *obj, const AVOption *o, const char *val, uint8_t *dst)
static int	get_sample_fmt (const char *name)
static int	set_string_sample_fmt (void *obj, const AVOption *o, const char *val, uint8_t *dst)
static int	set_string_dict (void *obj, const AVOption *o, const char *val, uint8_t **dst)
static int	set_string_channel_layout (void *obj, const AVOption *o, const char *val, void *dst)
static int	opt_set_elem (void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
static int	opt_set_array (void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
int	av_opt_set (void *obj, const char *name, const char *val, int search_flags)
static int	set_number (void *obj, const char *name, double num, int den, int64_t intnum, int search_flags, int require_type)
int	av_opt_set_int (void *obj, const char *name, int64_t val, int search_flags)
int	av_opt_set_double (void *obj, const char *name, double val, int search_flags)
int	av_opt_set_q (void *obj, const char *name, AVRational val, int search_flags)
int	av_opt_set_bin (void *obj, const char *name, const uint8_t *val, int len, int search_flags)
int	av_opt_set_image_size (void *obj, const char *name, int w, int h, int search_flags)
int	av_opt_set_video_rate (void *obj, const char *name, AVRational val, int search_flags)
static int	set_format (void *obj, const char *name, int fmt, int search_flags, enum AVOptionType type, const char *desc, int nb_fmts)
int	av_opt_set_pixel_fmt (void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
int	av_opt_set_sample_fmt (void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
int	av_opt_set_dict_val (void *obj, const char *name, const AVDictionary *val, int search_flags)
int	av_opt_set_chlayout (void *obj, const char *name, const AVChannelLayout *channel_layout, int search_flags)
static void	format_duration (char *buf, size_t size, int64_t d)
static int	opt_get_elem (const AVOption *o, uint8_t **pbuf, size_t buf_len, const void *dst, int search_flags)
static int	opt_get_array (const AVOption *o, void *dst, uint8_t **out_val)
int	av_opt_get (void *obj, const char *name, int search_flags, uint8_t **out_val)
static int	get_number (void *obj, const char *name, double *num, int *den, int64_t *intnum, int search_flags)
int	av_opt_get_int (void *obj, const char *name, int search_flags, int64_t *out_val)
int	av_opt_get_double (void *obj, const char *name, int search_flags, double *out_val)
int	av_opt_get_q (void *obj, const char *name, int search_flags, AVRational *out_val)
int	av_opt_get_image_size (void *obj, const char *name, int search_flags, int *w_out, int *h_out)
int	av_opt_get_video_rate (void *obj, const char *name, int search_flags, AVRational *out_val)
static int	get_format (void *obj, const char *name, int search_flags, void *out_fmt, enum AVOptionType type, const char *desc)
int	av_opt_get_pixel_fmt (void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
int	av_opt_get_sample_fmt (void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
int	av_opt_get_chlayout (void *obj, const char *name, int search_flags, AVChannelLayout *cl)
int	av_opt_get_dict_val (void *obj, const char *name, int search_flags, AVDictionary **out_val)
int	av_opt_flag_is_set (void *obj, const char *field_name, const char *flag_name)
	Check whether a particular flag is set in a flags field.
static void	log_int_value (void *av_log_obj, int level, int64_t i)
static void	log_value (void *av_log_obj, int level, double d)
static const char *	get_opt_const_name (void *obj, const char *unit, int64_t value)
static char *	get_opt_flags_string (void *obj, const char *unit, int64_t value)
static void	log_type (void *av_log_obj, const AVOption *o, enum AVOptionType parent_type)
static void	log_default (void *obj, void *av_log_obj, const AVOption *opt)
static void	opt_list (void *obj, void *av_log_obj, const char *unit, int req_flags, int rej_flags, enum AVOptionType parent_type)
int	av_opt_show2 (void *obj, void *av_log_obj, int req_flags, int rej_flags)
	Show the obj options.
void	av_opt_set_defaults (void *s)
	Set the values of all AVOption fields to their default values.
void	av_opt_set_defaults2 (void *s, int mask, int flags)
	Set the values of all AVOption fields to their default values.
static int	parse_key_value_pair (void *ctx, const char **buf, const char *key_val_sep, const char *pairs_sep)
	Store the value in the field in ctx that is named like key.
int	av_set_options_string (void *ctx, const char *opts, const char *key_val_sep, const char *pairs_sep)
	Parse the key/value pairs list in opts.
static int	is_key_char (char c)
static int	get_key (const char **ropts, const char *delim, char **rkey)
	Read a key from a string.
int	av_opt_get_key_value (const char **ropts, const char *key_val_sep, const char *pairs_sep, unsigned flags, char **rkey, char **rval)
	Extract a key-value pair from the beginning of a string.
int	av_opt_set_from_string (void *ctx, const char *opts, const char *const *shorthand, const char *key_val_sep, const char *pairs_sep)
	Parse the key-value pairs list in opts.
void	av_opt_free (void *obj)
	Free all allocated objects in obj.
int	av_opt_set_dict2 (void *obj, AVDictionary **options, int search_flags)
	Set all the options from a given dictionary on an object.
int	av_opt_set_dict (void *obj, AVDictionary **options)
	Set all the options from a given dictionary on an object.
const AVOption *	av_opt_find (void *obj, const char *name, const char *unit, int opt_flags, int search_flags)
	Look for an option in an object.
const AVOption *	av_opt_find2 (void *obj, const char *name, const char *unit, int opt_flags, int search_flags, void **target_obj)
	Look for an option in an object.
void *	av_opt_child_next (void *obj, void *prev)
	Iterate over AVOptions-enabled children of obj.
const AVClass *	av_opt_child_class_iterate (const AVClass *parent, void **iter)
	Iterate over potential AVOptions-enabled children of parent.
static int	opt_copy_elem (void *logctx, enum AVOptionType type, void *dst, const void *src)
static int	opt_copy_array (void *logctx, const AVOption *o, void **pdst, const void *const *psrc)
int	av_opt_copy (void *dst, const void *src)
	Copy options from src object into dest object.
int	av_opt_get_array_size (void *obj, const char *name, int search_flags, unsigned int *out_val)
	For an array-type option, get the number of elements in the array.
int	av_opt_get_array (void *obj, const char *name, int search_flags, unsigned int start_elem, unsigned int nb_elems, enum AVOptionType out_type, void *out_val)
	For an array-type option, retrieve the values of one or more array elements.
int	av_opt_set_array (void *obj, const char *name, int search_flags, unsigned int start_elem, unsigned int nb_elems, enum AVOptionType val_type, const void *val)
	Add, replace, or remove elements for an array option.
int	av_opt_query_ranges (AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
	Get a list of allowed ranges for the given option.
int	av_opt_query_ranges_default (AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
	Get a default list of allowed ranges for the given option.
void	av_opt_freep_ranges (AVOptionRanges **rangesp)
	Free an AVOptionRanges struct and set it to NULL.
int	av_opt_is_set_to_default (void *obj, const AVOption *o)
	Check if given option is set to its default value.
int	av_opt_is_set_to_default_by_name (void *obj, const char *name, int search_flags)
	Check if given option is set to its default value.
static int	opt_serialize (void *obj, int opt_flags, int flags, int *cnt, AVBPrint *bprint, const char key_val_sep, const char pairs_sep)
int	av_opt_serialize (void *obj, int opt_flags, int flags, char **buffer, const char key_val_sep, const char pairs_sep)
	Serialize object's options.

Variables
struct {
size_t   size
const char *   name
}	opt_type_desc []

Detailed Description

AVOptions.

Author

Michael Niedermayer micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at

Definition in file opt.c.

Macro Definition Documentation

TYPE_BASE

#define TYPE_BASE

(

type

)

Value:

((type) & ~AV_OPT_TYPE_FLAG_ARRAY)

Definition at line 45 of file opt.c.

Referenced by av_opt_get_array(), av_opt_set_array(), log_type(), opt_array_pelem(), opt_copy_array(), opt_free_elem(), opt_get_elem(), opt_set_array(), opt_set_elem(), read_number(), set_string_number(), and write_number().

DEFAULT_NUMVAL

#define DEFAULT_NUMVAL

(

opt

)

Value:

                              ((opt->type == AV_OPT_TYPE_INT64 || \
                              opt->type == AV_OPT_TYPE_UINT64 || \
                              opt->type == AV_OPT_TYPE_CONST || \
                              opt->type == AV_OPT_TYPE_FLAGS || \
                              opt->type == AV_OPT_TYPE_UINT  || \
                              opt->type == AV_OPT_TYPE_INT)     \
                             ? opt->default_val.i64             \
                             : opt->default_val.dbl)

Definition at line 415 of file opt.c.

Referenced by set_string_number().

OPT_EVAL_NUMBER

#define OPT_EVAL_NUMBER	(		name,
			opttype,
			vartype )

Value:

int av_opt_eval_ ## name(void *obj, const AVOption *o,                  \
                         const char *val, vartype *name ## _out)        \
{                                                                       \
    if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY)    \
        return AVERROR(EINVAL);                                         \
    return set_string_number(obj, obj, o, val, name ## _out);           \
}

Definition at line 901 of file opt.c.

WHITESPACES

#define WHITESPACES   " \n\t\r"

Definition at line 1913 of file opt.c.

Function Documentation

opt_is_pod()

static int opt_is_pod ( enum AVOptionType type )

static

Definition at line 86 of file opt.c.

Referenced by opt_copy_elem().

opt_array_sep()

static uint8_t opt_array_sep ( const AVOption * o )

static

Definition at line 109 of file opt.c.

Referenced by av_opt_set_defaults2(), opt_get_array(), and opt_set_array().

opt_array_pelem()

static void * opt_array_pelem ( const AVOption * o, void * array, unsigned idx )

static

Definition at line 116 of file opt.c.

Referenced by av_opt_get_array(), av_opt_set_array(), opt_copy_array(), opt_free_array(), opt_get_array(), and opt_set_array().

opt_array_pcount()

static unsigned * opt_array_pcount ( const void * parray )

static

Definition at line 122 of file opt.c.

Referenced by av_opt_free(), av_opt_get_array(), av_opt_get_array_size(), av_opt_set_array(), opt_copy_array(), opt_get_array(), and opt_set_array().

opt_free_elem()

static void opt_free_elem ( enum AVOptionType type, void * ptr )

static

Definition at line 127 of file opt.c.

Referenced by av_opt_free(), av_opt_get_array(), av_opt_set_array(), and opt_free_array().

opt_free_array()

static void opt_free_array ( const AVOption * o, void * parray, unsigned * count )

static

Definition at line 148 of file opt.c.

Referenced by av_opt_free(), av_opt_set_array(), opt_copy_array(), and opt_set_array().

opt_set_init()

static int opt_set_init ( void * obj, const char * name, int search_flags, int require_type, void ** ptgt, const AVOption ** po, void ** pdst )

static

Perform common setup for option-setting functions.

Parameters

require_type	when non-0, require the option to be of this type
ptgt	target object is written here
po	the option is written here
pdst	pointer to option value is written here

Definition at line 165 of file opt.c.

Referenced by av_opt_set(), av_opt_set_array(), av_opt_set_bin(), av_opt_set_chlayout(), av_opt_set_dict_val(), av_opt_set_image_size(), set_format(), and set_number().

double_to_rational()

static AVRational double_to_rational ( double d )

static

Definition at line 226 of file opt.c.

Referenced by av_opt_get_array(), av_opt_get_q(), and write_number().

read_number()

static int read_number ( const AVOption * o, const void * dst, double * num, int * den, int64_t * intnum )

static

Definition at line 234 of file opt.c.

Referenced by av_opt_get_array(), av_opt_is_set_to_default(), av_opt_set_array(), and get_number().

write_number()

static int write_number ( void * obj, const AVOption * o, void * dst, double num, int den, int64_t intnum )

static

Definition at line 275 of file opt.c.

Referenced by av_opt_set_array(), av_opt_set_defaults2(), opt_set_elem(), set_number(), and set_string_number().

hexchar2int()

static int hexchar2int ( char c )

static

Definition at line 354 of file opt.c.

Referenced by set_string_binary().

set_string_binary()

static int set_string_binary ( void * obj, const AVOption * o, const char * val, uint8_t ** dst )

static

Definition at line 364 of file opt.c.

Referenced by av_opt_is_set_to_default(), av_opt_set_defaults2(), and opt_set_elem().

set_string()

static int set_string ( void * obj, const AVOption * o, const char * val, uint8_t ** dst )

static

Definition at line 404 of file opt.c.

Referenced by av_opt_set_defaults2(), and opt_set_elem().

set_string_number()

static int set_string_number ( void * obj, void * target_obj, const AVOption * o, const char * val, void * dst )

static

Definition at line 424 of file opt.c.

Referenced by opt_set_elem().

set_string_image_size()

static int set_string_image_size ( void * obj, const AVOption * o, const char * val, int * dst )

static

Definition at line 519 of file opt.c.

Referenced by av_opt_set_defaults2(), and opt_set_elem().

set_string_video_rate()

static int set_string_video_rate ( void * obj, const AVOption * o, const char * val, AVRational * dst )

static

Definition at line 540 of file opt.c.

Referenced by av_opt_set_defaults2(), and opt_set_elem().

set_string_color()

static int set_string_color ( void * obj, const AVOption * o, const char * val, uint8_t * dst )

static

Definition at line 552 of file opt.c.

Referenced by av_opt_set_defaults2(), and opt_set_elem().

get_bool_name()

static const char * get_bool_name ( int val )

static

Definition at line 571 of file opt.c.

Referenced by log_default(), and opt_get_elem().

set_string_bool()

static int set_string_bool ( void * obj, const AVOption * o, const char * val, int * dst )

static

Definition at line 578 of file opt.c.

Referenced by opt_set_elem().

set_string_fmt()

static int set_string_fmt ( void * obj, const AVOption * o, const char * val, uint8_t * dst, int fmt_nb, int((*get_fmt)(const char *)) , const char * desc, enum AVOptionType type )

static

Definition at line 611 of file opt.c.

Referenced by set_string_pixel_fmt(), and set_string_sample_fmt().

get_pix_fmt()

static int get_pix_fmt ( const char * name )

static

Definition at line 658 of file opt.c.

Referenced by set_string_pixel_fmt().

set_string_pixel_fmt()

static int set_string_pixel_fmt ( void * obj, const AVOption * o, const char * val, uint8_t * dst )

static

Definition at line 663 of file opt.c.

Referenced by opt_set_elem().

get_sample_fmt()

static int get_sample_fmt ( const char * name )

static

Definition at line 670 of file opt.c.

Referenced by set_string_sample_fmt().

set_string_sample_fmt()

static int set_string_sample_fmt ( void * obj, const AVOption * o, const char * val, uint8_t * dst )

static

Definition at line 675 of file opt.c.

Referenced by opt_set_elem().

set_string_dict()

static int set_string_dict ( void * obj, const AVOption * o, const char * val, uint8_t ** dst )

static

Definition at line 682 of file opt.c.

Referenced by av_opt_set_defaults2(), and opt_set_elem().

set_string_channel_layout()

static int set_string_channel_layout ( void * obj, const AVOption * o, const char * val, void * dst )

static

Definition at line 705 of file opt.c.

Referenced by av_opt_set_defaults2(), and opt_set_elem().

opt_set_elem()

static int opt_set_elem ( void * obj, void * target_obj, const AVOption * o, const char * val, void * dst )

static

Definition at line 725 of file opt.c.

Referenced by av_opt_set(), av_opt_set_array(), and opt_set_array().

opt_set_array()

static int opt_set_array ( void * obj, void * target_obj, const AVOption * o, const char * val, void * dst )

static

Definition at line 803 of file opt.c.

Referenced by av_opt_set(), and av_opt_set_defaults2().

set_number()

static int set_number ( void * obj, const char * name, double num, int den, int64_t intnum, int search_flags, int require_type )

static

Definition at line 918 of file opt.c.

Referenced by av_opt_set_double(), av_opt_set_int(), av_opt_set_q(), av_opt_set_video_rate(), and set_number().

set_format()

static int set_format ( void * obj, const char * name, int fmt, int search_flags, enum AVOptionType type, const char * desc, int nb_fmts )

static

Definition at line 1011 of file opt.c.

Referenced by av_opt_set_pixel_fmt(), av_opt_set_sample_fmt(), and dshow_cycle_pins().

format_duration()

static void format_duration ( char * buf, size_t size, int64_t d )

static

Definition at line 1087 of file opt.c.

Referenced by log_default(), and opt_get_elem().

opt_get_elem()

static int opt_get_elem ( const AVOption * o, uint8_t ** pbuf, size_t buf_len, const void * dst, int search_flags )

static

Definition at line 1122 of file opt.c.

Referenced by av_opt_get(), av_opt_get_array(), and opt_get_array().

opt_get_array()

static int opt_get_array ( const AVOption * o, void * dst, uint8_t ** out_val )

static

Definition at line 1227 of file opt.c.

Referenced by av_opt_get(), and av_opt_is_set_to_default().

get_number()

static int get_number ( void * obj, const char * name, double * num, int * den, int64_t * intnum, int search_flags )

static

Definition at line 1330 of file opt.c.

Referenced by av_opt_get_double(), av_opt_get_int(), and av_opt_get_q().

get_format()

static int get_format ( void * obj, const char * name, int search_flags, void * out_fmt, enum AVOptionType type, const char * desc )

static

Definition at line 1411 of file opt.c.

Referenced by av_opt_get_pixel_fmt(), and av_opt_get_sample_fmt().

log_int_value()

static void log_int_value ( void * av_log_obj, int level, int64_t i )

static

Definition at line 1488 of file opt.c.

Referenced by log_default().

log_value()

static void log_value ( void * av_log_obj, int level, double d )

static

Definition at line 1505 of file opt.c.

Referenced by log_default(), and opt_list().

get_opt_const_name()

static const char * get_opt_const_name ( void * obj, const char * unit, int64_t value )

static

Definition at line 1538 of file opt.c.

Referenced by log_default().

get_opt_flags_string()

static char * get_opt_flags_string ( void * obj, const char * unit, int64_t value )

static

Definition at line 1551 of file opt.c.

Referenced by log_default().

log_type()

static void log_type ( void * av_log_obj, const AVOption * o, enum AVOptionType parent_type )

static

Definition at line 1572 of file opt.c.

Referenced by opt_list().

log_default()

static void log_default ( void * obj, void * av_log_obj, const AVOption * opt )

static

Definition at line 1589 of file opt.c.

Referenced by opt_list().

opt_list()

static void opt_list ( void * obj, void * av_log_obj, const char * unit, int req_flags, int rej_flags, enum AVOptionType parent_type )

static

Definition at line 1667 of file opt.c.

Referenced by av_opt_show2(), and opt_list().

parse_key_value_pair()

static int parse_key_value_pair ( void * ctx, const char ** buf, const char * key_val_sep, const char * pairs_sep )

static

Store the value in the field in ctx that is named like key.

ctx must be an AVClass context, storing is done using AVOptions.

Parameters

buf	the string to parse, buf will be updated to point at the separator just after the parsed key/value pair
key_val_sep	a 0-terminated list of characters used to separate key from value
pairs_sep	a 0-terminated list of characters used to separate two pairs from each other

Returns

0 if the key/value pair has been successfully parsed and set, or a negative value corresponding to an AVERROR code in case of error: AVERROR(EINVAL) if the key/value pair cannot be parsed, the error code issued by av_opt_set() if the key/value pair cannot be set

Definition at line 1859 of file opt.c.

Referenced by av_set_options_string().

is_key_char()

static int is_key_char ( char c )

static

Definition at line 1915 of file opt.c.

Referenced by get_key().

get_key()

static int get_key ( const char ** ropts, const char * delim, char ** rkey )

static

Read a key from a string.

The key consists of is_key_char characters and must be terminated by a character from the delim string; spaces are ignored.

Returns

0 for success (even with ellipsis), <0 for failure

Definition at line 1930 of file opt.c.

Referenced by av_opt_get_key_value().

opt_copy_elem()

static int opt_copy_elem ( void * logctx, enum AVOptionType type, void * dst, const void * src )

static

Definition at line 2133 of file opt.c.

Referenced by av_opt_copy(), av_opt_get_array(), av_opt_set_array(), and opt_copy_array().

opt_copy_array()

static int opt_copy_array ( void * logctx, const AVOption * o, void ** pdst, const void *const * psrc )

static

Definition at line 2181 of file opt.c.

Referenced by av_opt_copy().

opt_serialize()

static int opt_serialize ( void * obj, int opt_flags, int flags, int * cnt, AVBPrint * bprint, const char key_val_sep, const char pairs_sep )

static

Definition at line 2793 of file opt.c.

Referenced by av_opt_serialize(), and opt_serialize().

Variable Documentation

size

size_t size

Definition at line 61 of file opt.c.

name

const char* name

Definition at line 62 of file opt.c.

[struct]

const struct { ... } opt_type_desc[]

Initial value:

= {
    [AV_OPT_TYPE_FLAGS]         = { sizeof(unsigned),       "<flags>" },
    [AV_OPT_TYPE_INT]           = { sizeof(int),            "<int>" },
    [AV_OPT_TYPE_INT64]         = { sizeof(int64_t),        "<int64>" },
    [AV_OPT_TYPE_UINT]          = { sizeof(unsigned),       "<unsigned>" },
    [AV_OPT_TYPE_UINT64]        = { sizeof(uint64_t),       "<uint64>" },
    [AV_OPT_TYPE_DOUBLE]        = { sizeof(double),         "<double>" },
    [AV_OPT_TYPE_FLOAT]         = { sizeof(float),          "<float>" },
    [AV_OPT_TYPE_STRING]        = { sizeof(char *),         "<string>" },
    [AV_OPT_TYPE_RATIONAL]      = { sizeof(AVRational),     "<rational>" },
    [AV_OPT_TYPE_BINARY]        = { sizeof(uint8_t *),      "<binary>" },
    [AV_OPT_TYPE_DICT]          = { sizeof(AVDictionary *), "<dictionary>" },
    [AV_OPT_TYPE_IMAGE_SIZE]    = { sizeof(int[2]),         "<image_size>" },
    [AV_OPT_TYPE_VIDEO_RATE]    = { sizeof(AVRational),     "<video_rate>" },
    [AV_OPT_TYPE_PIXEL_FMT]     = { sizeof(enum AVPixelFormat),  "<pix_fmt>" },
    [AV_OPT_TYPE_SAMPLE_FMT]    = { sizeof(enum AVSampleFormat), "<sample_fmt>" },
    [AV_OPT_TYPE_DURATION]      = { sizeof(int64_t),        "<duration>" },
    [AV_OPT_TYPE_COLOR]         = { sizeof(uint8_t[4]),     "<color>" },
    [AV_OPT_TYPE_CHLAYOUT]      = { sizeof(AVChannelLayout),"<channel_layout>" },
    [AV_OPT_TYPE_BOOL]          = { sizeof(int),            "<boolean>" },
}

Referenced by av_opt_get_array(), av_opt_set_array(), log_type(), opt_array_pelem(), opt_copy_array(), opt_copy_elem(), opt_set_array(), and opt_set_init().