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AVOption: add support for dictionary types.

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In order to support metadata being set as an option, it's necessary to be able
to set dictionaries as values.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Andrew Stone
2014-07-31 19:56:34 -04:00
committed by Anton Khirnov
parent afbd4b7e09
commit a8c104a511
4 changed files with 77 additions and 14 deletions
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31
libavutil/opt.h
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@@ -224,6 +224,7 @@ enum AVOptionType{
AV_OPT_TYPE_STRING,
AV_OPT_TYPE_RATIONAL,
AV_OPT_TYPE_BINARY, ///< offset must point to a pointer immediately followed by an int for the length
AV_OPT_TYPE_DICT,
AV_OPT_TYPE_CONST = 128,
};
@@ -325,7 +326,7 @@ int av_set_options_string(void *ctx, const char *opts,
const char *key_val_sep, const char *pairs_sep);
/**
* Free all string and binary options in obj.
* Free all allocated objects in obj.
*/
void av_opt_free(void *obj);
@@ -491,11 +492,16 @@ const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *pre
* AVERROR(ERANGE) if the value is out of range
* AVERROR(EINVAL) if the value is not valid
*/
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 (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);
/**
* @note Any old dictionary present is discarded and replaced with a copy of the new one. The
* caller still owns val is and responsible for freeing it.
*/
int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags);
/**
* @}
*/
@@ -515,10 +521,15 @@ int av_opt_set_bin (void *obj, const char *name, const uint8_t *val, int size,
/**
* @note the returned string will av_malloc()ed and must be av_free()ed by the caller
*/
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 (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);
/**
* @param[out] out_val The returned dictionary is a copy of the actual value and must
* be freed with av_dict_free() by the caller
*/
int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val);
/**
* @}
* @}