AVOptions. More...

#include "rational.h"
#include "avutil.h"
#include "dict.h"
#include "log.h"
#include "pixfmt.h"
#include "samplefmt.h"
#include "version.h"

Data Structures
struct	AVOption
	AVOption. More...

struct	AVOptionRange
	A single allowed range of values, or a single allowed value. More...

struct	AVOptionRanges
	List of AVOptionRange structs. More...

Macros
#define	AV_OPT_FLAG_ENCODING_PARAM 1
	a generic parameter which can be set by the user for muxing or encoding More...

#define	AV_OPT_FLAG_DECODING_PARAM 2
	a generic parameter which can be set by the user for demuxing or decoding More...

#define	AV_OPT_FLAG_METADATA 4
	some data extracted or inserted into the file like title, comment, ... More...

#define	AV_OPT_FLAG_AUDIO_PARAM 8

#define	AV_OPT_FLAG_VIDEO_PARAM 16

#define	AV_OPT_FLAG_SUBTITLE_PARAM 32

#define	AV_OPT_FLAG_EXPORT 64
	The option is intended for exporting values to the caller. More...

#define	AV_OPT_FLAG_READONLY 128
	The option may not be set through the AVOptions API, only read. More...

#define	AV_OPT_FLAG_FILTERING_PARAM (1<<16)
	a generic parameter which can be set by the user for filtering More...

#define	AV_OPT_SEARCH_CHILDREN (1 << 0)
	Search in possible children of the given object first. More...

#define	AV_OPT_SEARCH_FAKE_OBJ (1 << 1)
	The obj passed to av_opt_find() is fake – only a double pointer to AVClass instead of a required pointer to a struct containing AVClass. More...

#define	AV_OPT_ALLOW_NULL (1 << 2)
	In av_opt_get, return NULL if the option has a pointer type and is set to NULL, rather than returning an empty string. More...

#define	AV_OPT_MULTI_COMPONENT_RANGE (1 << 12)
	Allows av_opt_query_ranges and av_opt_query_ranges_default to return more than one component for certain option types. More...

#define	av_opt_set_int_list(obj, name, val, term, flags)
	Set a binary option to an integer list. More...

#define	AV_OPT_SERIALIZE_SKIP_DEFAULTS 0x00000001
	Serialize options that are not set to default values only. More...

#define	AV_OPT_SERIALIZE_OPT_FLAGS_EXACT 0x00000002
	Serialize options that exactly match opt_flags only. More...

Enumerations
enum	AVOptionType { AV_OPT_TYPE_FLAGS, AV_OPT_TYPE_INT, AV_OPT_TYPE_INT64, AV_OPT_TYPE_DOUBLE, AV_OPT_TYPE_FLOAT, AV_OPT_TYPE_STRING, AV_OPT_TYPE_RATIONAL, AV_OPT_TYPE_BINARY, AV_OPT_TYPE_DICT, AV_OPT_TYPE_UINT64, AV_OPT_TYPE_CONST = 128, AV_OPT_TYPE_IMAGE_SIZE = MKBETAG('S','I','Z','E'), AV_OPT_TYPE_PIXEL_FMT = MKBETAG('P','F','M','T'), AV_OPT_TYPE_SAMPLE_FMT = MKBETAG('S','F','M','T'), AV_OPT_TYPE_VIDEO_RATE = MKBETAG('V','R','A','T'), AV_OPT_TYPE_DURATION = MKBETAG('D','U','R',' '), AV_OPT_TYPE_COLOR = MKBETAG('C','O','L','R'), AV_OPT_TYPE_CHANNEL_LAYOUT = MKBETAG('C','H','L','A'), AV_OPT_TYPE_BOOL = MKBETAG('B','O','O','L') }

enum	{ AV_OPT_FLAG_IMPLICIT_KEY = 1 }

Functions
int	av_opt_show2 (void obj, void av_log_obj, int req_flags, int rej_flags)
	Show the obj options. More...

void	av_opt_set_defaults (void *s)
	Set the values of all AVOption fields to their default values. More...

void	av_opt_set_defaults2 (void *s, int mask, int flags)
	Set the values of all AVOption fields to their default values. More...

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. More...

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. More...

void	av_opt_free (void *obj)
	Free all allocated objects in obj. More...

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. More...

int	av_opt_set_dict (void obj, struct AVDictionary *options)
	Set all the options from a given dictionary on an object. More...

int	av_opt_set_dict2 (void obj, struct AVDictionary *options, int search_flags)
	Set all the options from a given dictionary on an object. More...

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. More...

int	av_opt_eval_flags (void obj, const AVOption o, const char val, int flags_out)

int	av_opt_eval_int (void obj, const AVOption o, const char val, int int_out)

int	av_opt_eval_int64 (void obj, const AVOption o, const char val, int64_t int64_out)

int	av_opt_eval_float (void obj, const AVOption o, const char val, float float_out)

int	av_opt_eval_double (void obj, const AVOption o, const char val, double double_out)

int	av_opt_eval_q (void obj, const AVOption o, const char val, AVRational q_out)

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. More...

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. More...

const AVOption *	av_opt_next (const void obj, const AVOption prev)
	Iterate over all AVOptions belonging to obj. More...

void *	av_opt_child_next (void obj, void prev)
	Iterate over AVOptions-enabled children of obj. More...

const AVClass *	av_opt_child_class_next (const AVClass parent, const AVClass prev)
	Iterate over potential AVOptions-enabled children of parent. More...

int	av_opt_set (void obj, const char name, const char *val, int search_flags)

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 size, 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_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_video_rate (void obj, const char name, AVRational val, int search_flags)

int	av_opt_set_channel_layout (void obj, const char name, int64_t ch_layout, int search_flags)

int	av_opt_set_dict_val (void obj, const char name, const AVDictionary *val, int search_flags)

int	av_opt_get (void obj, const char name, int search_flags, uint8_t **out_val)

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_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_video_rate (void obj, const char name, int search_flags, AVRational *out_val)

int	av_opt_get_channel_layout (void obj, const char name, int search_flags, int64_t *ch_layout)

int	av_opt_get_dict_val (void obj, const char name, int search_flags, AVDictionary **out_val)

void *	av_opt_ptr (const AVClass avclass, void obj, const char *name)
	Gets a pointer to the requested field in a struct. More...

void	av_opt_freep_ranges (AVOptionRanges **ranges)
	Free an AVOptionRanges struct and set it to NULL. More...

int	av_opt_query_ranges (AVOptionRanges *, void obj, const char *key, int flags)
	Get a list of allowed ranges for the given option. More...

int	av_opt_copy (void dest, const void src)
	Copy options from src object into dest object. More...

int	av_opt_query_ranges_default (AVOptionRanges *, void obj, const char *key, int flags)
	Get a default list of allowed ranges for the given option. More...

int	av_opt_is_set_to_default (void obj, const AVOption o)
	Check if given option is set to its default value. More...

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. More...

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. More...