479fb7b8af
* qatar/master: (35 commits) fix space type in Changelog ZeroCodec Decoder RealAudio Lossless decoder rtpenc: Use AVFormatContext.packet_size instead of a private option url: Document the expected behaviour of url_read libavformat: Use AVFormatContext.probesize in init_input docs: Fix a stray reference to tags in the generic doxy on dicts cosmetics: Align some AVInput/OutputFormat declarations zmbv: check decompress result zmbv: correct indentation adpcm: convert adpcm_thp to bytestream2. adpcm: convert adpcm_yamaha to bytestream2. adpcm: convert adpcm_swf to bytestream2. adpcm: convert adpcm_sbpro to bytestream2. adpcm: convert adpcm_ct to bytestream2. adpcm: convert adpcm_ima_amv/smjpeg to bytestream2. adpcm: convert adpcm_ea_xas to bytestream2. adpcm: convert adpcm_ea_r1/2/3 to bytestream2. adpcm: convert ea_maxis_xa to bytestream2. adpcm: convert adpcm_ea to bytestream2. ... Conflicts: Changelog libavcodec/Makefile libavcodec/adpcm.c libavcodec/allcodecs.c libavcodec/avcodec.h libavcodec/version.h libavcodec/zerocodec.c libavcodec/zmbv.c libavformat/riff.c libavformat/url.h tests/ref/fate/truemotion1-15 tests/ref/fate/truemotion1-24 Merged-by: Michael Niedermayer <michaelni@gmx.at>
128 lines
4.7 KiB
C
128 lines
4.7 KiB
C
/*
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Public dictionary API.
|
|
* @deprecated
|
|
* 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.
|
|
*/
|
|
|
|
#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 {
|
|
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);
|
|
|
|
/**
|
|
* 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
|