AVOptions. More...

#include "avutil.h"
#include "avstring.h"
#include "common.h"
#include "opt.h"
#include "eval.h"
#include "dict.h"
#include "log.h"
#include "mathematics.h"

Macros
#define	DEFAULT_NUMVAL(opt)

#define	OPT_EVAL_NUMBER(name, opttype, vartype)

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

static int	read_number (const AVOption o, 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, 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	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_get (void obj, const char name, int search_flags, uint8_t **out_val)

static int	get_number (void obj, const char name, const AVOption *o_out, 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_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...

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

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...

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. 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...

void	av_opt_free (void *obj)
	Free all string and binary options in obj. More...

int	av_opt_set_dict (void obj, AVDictionary *options)

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...

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...

Variables
static const double	const_values []

static const char *const	const_names []

Detailed Description

AVOptions.

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

Definition in file opt.c.

Macro Definition Documentation

#define DEFAULT_NUMVAL ( opt )

Value:

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

Definition at line 143 of file opt.c.

Referenced by set_string_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)\
            return AVERROR(EINVAL);\
        return set_string_number(obj, o, val, name ## _out);\
    }

Definition at line 234 of file opt.c.

Function Documentation

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

static

Definition at line 352 of file opt.c.

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

static int hexchar2int ( char c )

static

Definition at line 100 of file opt.c.

Referenced by set_string_binary().

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

static

Definition at line 424 of file opt.c.

Referenced by av_opt_show2().

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 560 of file opt.c.

Referenced by av_set_options_string().

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

static

Definition at line 47 of file opt.c.

Referenced by get_number(), and set_string_number().

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

static

Definition at line 249 of file opt.c.

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

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

static

Definition at line 136 of file opt.c.

Referenced by av_opt_set().

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

static

Definition at line 107 of file opt.c.

Referenced by av_opt_set().

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

static

Definition at line 149 of file opt.c.

Referenced by av_opt_set().

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

static

Definition at line 62 of file opt.c.

Referenced by set_number(), and set_string_number().

Variable Documentation

const char* const const_names[]

static

Initial value:

= {
    "PI",
    "E",
    "QP2LAMBDA",
    0
}

Definition at line 93 of file opt.c.

Referenced by av_expr_parse(), ff_rate_control_init(), and set_string_number().

const double const_values[]

static

Initial value:

= {
    M_PI,
    M_E,
    FF_QP2LAMBDA,
    0
}

Definition at line 86 of file opt.c.

Referenced by av_expr_eval(), get_qscale(), and set_string_number().

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation