1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
(*
* AVDictionary
* copyright (c) 2011 Karl-Michael Schindler <karl-michael.schindler@web.de>
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* This is a part of the Pascal port of ffmpeg.
*
* Conversion of libavutil/dict.h
* avutil version 54.7.100
*
*)
const
AV_DICT_MATCH_CASE = 1;
AV_DICT_IGNORE_SUFFIX = 2;
AV_DICT_DONT_STRDUP_KEY = 4; (**< Take ownership of a key that's been
allocated with av_malloc() or another memory allocation function. *)
AV_DICT_DONT_STRDUP_VAL = 8; (**< Take ownership of a value that's been
allocated with av_malloc() or another memory allocation function. *)
AV_DICT_DONT_OVERWRITE = 16; (**< Don't overwrite existing entries. *)
AV_DICT_APPEND = 32; (**< If the entry already exists, append to it. Note that no
delimiter is added, the strings are simply concatenated. *)
type
PAVDictionaryEntry = ^TAVDictionaryEntry;
TAVDictionaryEntry = record
key: PAnsiChar;
value: PAnsiChar;
end;
(* with the "help" of libavutil/internal.h: *)
PPAVDictionary = ^PAVDictionary;
PAVDictionary = ^TAVDictionary;
TAVDictionary = record
count: cint;
elems: PAVDictionaryEntry;
end;
(**
* 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 key 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 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
*)
function av_dict_get({const} m: PAVDictionary; {const} key: PAnsiChar; {const} prev: PAVDictionaryEntry; flags: cint): PAVDictionaryEntry;
cdecl; external av__util;
(**
* Get number of entries in dictionary.
*
* @param m dictionary
* @return number of entries in dictionary
*)
function av_dict_count({const} m: PAVDictionary): cint;
cdecl; external av__util;
(**
* Set the given entry in *pm, overwriting an existing entry.
*
* Note: If AV_DICT_DONT_STRDUP_KEY or AV_DICT_DONT_STRDUP_VAL is set,
* these arguments will be freed on error.
*
* @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
*)
function av_dict_set(var pm: PAVDictionary; {const} key: PAnsiChar; {const} value: PAnsiChar; flags: cint): cint;
cdecl; external av__util;
(**
* Convenience wrapper for av_dict_set that converts the value to a string
* and stores it.
*
* Note: If AV_DICT_DONT_STRDUP_KEY is set, key will be freed on error.
*)
function av_dict_set_int(var pm: PAVDictionary; {const} key: PAnsiChar;
value: cint64; flags: cint): cint;
cdecl; external av__util;
(**
* Parse the key/value pairs list and add the parsed entries to a dictionary.
*
* In case of failure, all the successfully set entries are stored in
* *pm. You may need to manually free the created dictionary.
*
* @param key_val_sep a 0-terminated list of characters used to separate
* key from value
* @param pairs_sep a 0-terminated list of characters used to separate
* two pairs from each other
* @param flags flags to use when adding to dictionary.
* AV_DICT_DONT_STRDUP_KEY and AV_DICT_DONT_STRDUP_VAL
* are ignored since the key/value tokens will always
* be duplicated.
* @return 0 on success, negative AVERROR code on failure
*)
function av_dict_parse_string(var pm: PAVDictionary; {const} str: PAnsiChar;
{const} key_val_sep: PAnsiChar; {const} pairs_sep: PAnsiChar;
flags: cint): cint;
cdecl; external av__util;
(**
* 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
*)
procedure av_dict_copy(var dst: PAVDictionary; {const} src: PAVDictionary; flags: cint);
cdecl; external av__util;
(**
* Get dictionary entries as a string.
*
* Create a string containing dictionary's entries.
* Such string may be passed back to av_dict_parse_string().
* @note String is escaped with backslashes ('\').
*
* @param[in] m dictionary
* @param[out] buffer Pointer to buffer that will be allocated with string containg entries.
* Buffer must be freed by the caller when is no longer needed.
* @param[in] key_val_sep character used to separate key from value
* @param[in] pairs_sep character used to separate two pairs from each other
* @return >= 0 on success, negative on error
* @warning Separators cannot be neither '\\' nor '\0'. They also cannot be the same.
*)
function av_dict_get_string({const} m: PAVDictionary; buffer: PPAnsiChar;
{const} key_val_sep: AnsiChar; {const} pairs_sep: AnsiChar): cint;
cdecl; external av__util;
(**
* Free all the memory allocated for an AVDictionary struct
* and all keys and values.
*)
procedure av_dict_free(var m: PAVDictionary);
cdecl; external av__util;
|
