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, AV_METADATA_MATCH_CASE);
55 m=*pm= av_mallocz(sizeof(*m));
60 *tag= m->elems[--m->count];
62 AVMetadataTag *tmp= av_realloc(m->elems, (m->count+1) * sizeof(*m->elems));
66 return AVERROR(ENOMEM);
69 if(flags & AV_METADATA_DONT_STRDUP_KEY){
70 m->elems[m->count].key = key;
72 m->elems[m->count].key = av_strdup(key );
73 if(flags & AV_METADATA_DONT_STRDUP_VAL){
74 m->elems[m->count].value= value;
76 m->elems[m->count].value= av_strdup(value);
87 #if LIBAVFORMAT_VERSION_MAJOR == 52
88 int av_metadata_set(AVMetadata **pm, const char *key, const char *value)
90 return av_metadata_set2(pm, key, value, 0);
94 void av_metadata_free(AVMetadata **pm)
100 av_free(m->elems[m->count].key);
101 av_free(m->elems[m->count].value);
108 void metadata_conv(AVMetadata **pm, const AVMetadataConv *d_conv,
109 const AVMetadataConv *s_conv)
111 /* TODO: use binary search to look up the two conversion tables
112 if the tables are getting big enough that it would matter speed wise */
113 const AVMetadataConv *sc, *dc;
114 AVMetadataTag *mtag = NULL;
115 AVMetadata *dst = NULL;
118 while((mtag=av_metadata_get(*pm, "", mtag, AV_METADATA_IGNORE_SUFFIX))) {
120 if (s_conv != d_conv) {
122 for (sc=s_conv; sc->native; sc++)
123 if (!strcasecmp(key, sc->native)) {
128 for (dc=d_conv; dc->native; dc++)
129 if (!strcasecmp(key, dc->generic)) {
134 av_metadata_set(&dst, key, mtag->value);
136 av_metadata_free(pm);
140 void av_metadata_conv(AVFormatContext *ctx, const AVMetadataConv *d_conv,
141 const AVMetadataConv *s_conv)
144 metadata_conv(&ctx->metadata, d_conv, s_conv);
145 for (i=0; i<ctx->nb_streams ; i++)
146 metadata_conv(&ctx->streams [i]->metadata, d_conv, s_conv);
147 for (i=0; i<ctx->nb_chapters; i++)
148 metadata_conv(&ctx->chapters[i]->metadata, d_conv, s_conv);
149 for (i=0; i<ctx->nb_programs; i++)
150 metadata_conv(&ctx->programs[i]->metadata, d_conv, s_conv);