libavutil/dict.h File Reference

Public dictionary API. More...

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Data Structures

struct  AVDictionaryEntry


#define AV_DICT_MATCH_CASE   1
 Take ownership of a key that's been allocated with av_malloc() and children.
 Take ownership of a value that's been allocated with av_malloc() and chilren.
 Don't overwrite existing entries.
#define AV_DICT_APPEND   32
 If the entry already exists, append to it.


typedef struct AVDictionary AVDictionary


AVDictionaryEntryav_dict_get (AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
 Get a dictionary entry with matching key.
int av_dict_set (AVDictionary **pm, const char *key, const char *value, int flags)
 Set the given entry in *pm, overwriting an existing entry.
void av_dict_copy (AVDictionary **dst, AVDictionary *src, int flags)
 Copy entries from one AVDictionary struct into another.
void av_dict_free (AVDictionary **m)
 Free all the memory allocated for an AVDictionary struct and all keys and values.

Detailed Description

Public dictionary API.

AVDictionary is provided for compatibility with libav. It is both in implementation as well as API inefficient. It does not scale and is extremely slow with large dictionaries. It is recommended that new code uses our tree container from tree.c/h where applicable, which uses AVL trees to achieve O(log n) performance.

Definition in file dict.h.

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