Option setting functions
[AVOptions]

Those functions set the field of obj with the given name to value. More...

Functions
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)

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Detailed Description

Those functions set the field of obj with the given name to value.

Parameters:

[in]	obj	A struct whose first element is a pointer to an AVClass.
[in]	name	the name of the field to set
[in]	val	The value to set. In case of av_opt_set() if the field is not of a string type, then the given string is parsed. SI postfixes and some named scalars are supported. If the field is of a numeric type, it has to be a numeric or named scalar. Behavior with more than one scalar and +- infix operators is undefined. If the field is of a flags type, it has to be a sequence of numeric scalars or named flags separated by '+' or '-'. Prefixing a flag with '+' causes it to be set without affecting the other flags; similarly, '-' unsets a flag.
	search_flags	flags passed to av_opt_find2. I.e. if AV_OPT_SEARCH_CHILDREN is passed here, then the option may be set on a child of obj.

Returns:

0 if the value has been set, or an AVERROR code in case of error: AVERROR_OPTION_NOT_FOUND if no matching option exists AVERROR(ERANGE) if the value is out of range AVERROR(EINVAL) if the value is not valid

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Function Documentation

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

Definition at line 226 of file opt.c.

Referenced by av_opt_set_defaults2(), av_opt_set_dict(), av_set_string3(), avcodec_get_context_defaults3(), ffserver_opt_default(), init(), mmsh_open_internal(), open_input(), opt_default(), opt_output_file(), parse_key_value_pair(), url_alloc_for_protocol(), and video_encode_example().

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

Definition at line 316 of file opt.c.

Referenced by av_opt_set_defaults2().

int av_opt_set_int	(	void *	obj,
		const char *	name,
		int64_t	val,
		int	search_flags
	)

Definition at line 311 of file opt.c.

Referenced by av_opt_set_defaults2(), config_output(), config_props(), init(), main(), and swr_alloc_set_opts().

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

Definition at line 321 of file opt.c.

Referenced by av_opt_set_defaults2().