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lavu/dict.h: extend/clarify av_dict_get() doxy

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This commit is contained in:
Stefano Sabatini 2013-12-15 23:12:38 +01:00
parent 023693d786
commit e3eb0988c6
1 changed files with 5 additions and 2 deletions
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7
libavutil/dict.h
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@ -85,14 +85,17 @@ typedef struct AVDictionary AVDictionary;
/**
* Get a dictionary entry with matching key.
*
* The returned entry key or value must not be changed, or it will
* cause undefined behavior.
*
* To iterate through all the dictionary entries, you can set the matching key
* to the null string "" and set the AV_DICT_IGNORE_SUFFIX flag.
*
* @param prev Set to the previous matching element to find the next.
* If set to NULL the first matching element is returned.
* @param key matching key
* @param flags Allows case as well as suffix-insensitive comparisons.
* @return Found entry or NULL, changing key or value leads to undefined behavior.
* @param flags a collection of AV_DICT_* flags controlling how the entry is retrieved
* @return found entry or NULL in case no matching entry was found in the dictionary
*/
AVDictionaryEntry *
av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags);