diff -r c4fd2813b127 -r d92eeb468dad misc/winutils/include/libavutil/dict.h --- a/misc/winutils/include/libavutil/dict.h Wed Jul 31 23:14:27 2019 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,129 +0,0 @@ -/* - * - * This file is part of Libav. - * - * Libav is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * Libav is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * Public dictionary API. - */ - -#ifndef AVUTIL_DICT_H -#define AVUTIL_DICT_H - -/** - * @addtogroup lavu_dict AVDictionary - * @ingroup lavu_data - * - * @brief Simple key:value store - * - * @{ - * Dictionaries are used for storing key:value pairs. To create - * an AVDictionary, simply pass an address of a NULL pointer to - * av_dict_set(). NULL can be used as an empty dictionary wherever - * a pointer to an AVDictionary is required. - * Use av_dict_get() to retrieve an entry or iterate over all - * entries and finally av_dict_free() to free the dictionary - * and all its contents. - * - * @code - * AVDictionary *d = NULL; // "create" an empty dictionary - * av_dict_set(&d, "foo", "bar", 0); // add an entry - * - * char *k = av_strdup("key"); // if your strings are already allocated, - * char *v = av_strdup("value"); // you can avoid copying them like this - * av_dict_set(&d, k, v, AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL); - * - * AVDictionaryEntry *t = NULL; - * while (t = av_dict_get(d, "", t, AV_DICT_IGNORE_SUFFIX)) { - * <....> // iterate over all entries in d - * } - * - * av_dict_free(&d); - * @endcode - * - */ - -#define AV_DICT_MATCH_CASE 1 -#define AV_DICT_IGNORE_SUFFIX 2 -#define AV_DICT_DONT_STRDUP_KEY 4 /**< Take ownership of a key that's been - allocated with av_malloc() and children. */ -#define AV_DICT_DONT_STRDUP_VAL 8 /**< Take ownership of a value that's been - allocated with av_malloc() and chilren. */ -#define AV_DICT_DONT_OVERWRITE 16 ///< Don't overwrite existing entries. -#define AV_DICT_APPEND 32 /**< If the entry already exists, append to it. Note that no - delimiter is added, the strings are simply concatenated. */ - -typedef struct AVDictionaryEntry { - char *key; - char *value; -} AVDictionaryEntry; - -typedef struct AVDictionary AVDictionary; - -/** - * Get a dictionary entry with matching key. - * - * @param prev Set to the previous matching element to find the next. - * If set to NULL the first matching element is returned. - * @param flags Allows case as well as suffix-insensitive comparisons. - * @return Found entry or NULL, changing key or value leads to undefined behavior. - */ -AVDictionaryEntry * -av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags); - -/** - * Get number of entries in dictionary. - * - * @param m dictionary - * @return number of entries in dictionary - */ -int av_dict_count(const AVDictionary *m); - -/** - * Set the given entry in *pm, overwriting an existing entry. - * - * @param pm pointer to a pointer to a dictionary struct. If *pm is NULL - * a dictionary struct is allocated and put in *pm. - * @param key entry key to add to *pm (will be av_strduped depending on flags) - * @param value entry value to add to *pm (will be av_strduped depending on flags). - * Passing a NULL value will cause an existing entry to be deleted. - * @return >= 0 on success otherwise an error code <0 - */ -int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags); - -/** - * Copy entries from one AVDictionary struct into another. - * @param dst pointer to a pointer to a AVDictionary struct. If *dst is NULL, - * this function will allocate a struct for you and put it in *dst - * @param src pointer to source AVDictionary struct - * @param flags flags to use when setting entries in *dst - * @note metadata is read using the AV_DICT_IGNORE_SUFFIX flag - */ -void av_dict_copy(AVDictionary **dst, AVDictionary *src, int flags); - -/** - * Free all the memory allocated for an AVDictionary struct - * and all keys and values. - */ -void av_dict_free(AVDictionary **m); - -/** - * @} - */ - -#endif /* AVUTIL_DICT_H */