2 * copyright (c) 2009 Michael Niedermayer
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 av_metadata_get(AVMetadata *m, const char *key, const AVMetadataTag *prev, int flags)
33 if(prev) i= prev - m->elems + 1;
36 for(; i<m->count; i++){
37 const char *s= m->elems[i].key;
38 if(flags & AV_METADATA_MATCH_CASE) for(j=0; s[j] == key[j] && key[j]; j++);
39 else for(j=0; toupper(s[j]) == toupper(key[j]) && key[j]; j++);
42 if(s[j] && !(flags & AV_METADATA_IGNORE_SUFFIX))
49 int av_metadata_set2(AVMetadata **pm, const char *key, const char *value, int flags)
52 AVMetadataTag *tag= av_metadata_get(m, key, NULL, flags);
55 m=*pm= av_mallocz(sizeof(*m));
58 if (flags & AV_METADATA_DONT_OVERWRITE)
62 *tag= m->elems[--m->count];
64 AVMetadataTag *tmp= av_realloc(m->elems, (m->count+1) * sizeof(*m->elems));
68 return AVERROR(ENOMEM);
71 if(flags & AV_METADATA_DONT_STRDUP_KEY){
72 m->elems[m->count].key = key;
74 m->elems[m->count].key = av_strdup(key );
75 if(flags & AV_METADATA_DONT_STRDUP_VAL){
76 m->elems[m->count].value= value;
78 m->elems[m->count].value= av_strdup(value);
89 #if FF_API_OLD_METADATA2
90 void av_metadata_conv(AVFormatContext *ctx, const AVMetadataConv *d_conv,
91 const AVMetadataConv *s_conv)
97 void av_metadata_free(AVMetadata **pm)
103 av_free(m->elems[m->count].key);
104 av_free(m->elems[m->count].value);
111 void ff_metadata_conv(AVMetadata **pm, const AVMetadataConv *d_conv,
112 const AVMetadataConv *s_conv)
114 /* TODO: use binary search to look up the two conversion tables
115 if the tables are getting big enough that it would matter speed wise */
116 const AVMetadataConv *sc, *dc;
117 AVMetadataTag *mtag = NULL;
118 AVMetadata *dst = NULL;
121 if (d_conv == s_conv)
124 while((mtag=av_metadata_get(*pm, "", mtag, AV_METADATA_IGNORE_SUFFIX))) {
127 for (sc=s_conv; sc->native; sc++)
128 if (!strcasecmp(key, sc->native)) {
133 for (dc=d_conv; dc->native; dc++)
134 if (!strcasecmp(key, dc->generic)) {
138 av_metadata_set2(&dst, key, mtag->value, 0);
140 av_metadata_free(pm);
144 void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv,
145 const AVMetadataConv *s_conv)
148 ff_metadata_conv(&ctx->metadata, d_conv, s_conv);
149 for (i=0; i<ctx->nb_streams ; i++)
150 ff_metadata_conv(&ctx->streams [i]->metadata, d_conv, s_conv);
151 for (i=0; i<ctx->nb_chapters; i++)
152 ff_metadata_conv(&ctx->chapters[i]->metadata, d_conv, s_conv);
153 for (i=0; i<ctx->nb_programs; i++)
154 ff_metadata_conv(&ctx->programs[i]->metadata, d_conv, s_conv);
157 void av_metadata_copy(AVMetadata **dst, AVMetadata *src, int flags)
159 AVMetadataTag *t = NULL;
161 while ((t = av_metadata_get(src, "", t, AV_METADATA_IGNORE_SUFFIX)))
162 av_metadata_set2(dst, t->key, t->value, flags);