1 /*
2 * copyright (c) 2009 Michael Niedermayer
3 *
4 * This file is part of FFmpeg.
5 *
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.
10 *
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.
15 *
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
19 */
20
21 #include "avformat.h"
22 #include "metadata.h"
23 #include "libavutil/dict.h"
24 #include "libavutil/avstring.h"
25
ff_metadata_conv(AVDictionary ** pm,const AVMetadataConv * d_conv,const AVMetadataConv * s_conv)26 void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv,
27 const AVMetadataConv *s_conv)
28 {
29 /* TODO: use binary search to look up the two conversion tables
30 if the tables are getting big enough that it would matter speed wise */
31 const AVMetadataConv *sc, *dc;
32 AVDictionaryEntry *mtag = NULL;
33 AVDictionary *dst = NULL;
34 const char *key;
35
36 if (d_conv == s_conv || !pm)
37 return;
38
39 while ((mtag = av_dict_get(*pm, "", mtag, AV_DICT_IGNORE_SUFFIX))) {
40 key = mtag->key;
41 if (s_conv)
42 for (sc=s_conv; sc->native; sc++)
43 if (!av_strcasecmp(key, sc->native)) {
44 key = sc->generic;
45 break;
46 }
47 if (d_conv)
48 for (dc=d_conv; dc->native; dc++)
49 if (!av_strcasecmp(key, dc->generic)) {
50 key = dc->native;
51 break;
52 }
53 av_dict_set(&dst, key, mtag->value, 0);
54 }
55 av_dict_free(pm);
56 *pm = dst;
57 }
58
ff_metadata_conv_ctx(AVFormatContext * ctx,const AVMetadataConv * d_conv,const AVMetadataConv * s_conv)59 void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv,
60 const AVMetadataConv *s_conv)
61 {
62 int i;
63 ff_metadata_conv(&ctx->metadata, d_conv, s_conv);
64 for (i=0; i<ctx->nb_streams ; i++)
65 ff_metadata_conv(&ctx->streams [i]->metadata, d_conv, s_conv);
66 for (i=0; i<ctx->nb_chapters; i++)
67 ff_metadata_conv(&ctx->chapters[i]->metadata, d_conv, s_conv);
68 for (i=0; i<ctx->nb_programs; i++)
69 ff_metadata_conv(&ctx->programs[i]->metadata, d_conv, s_conv);
70 }
71