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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 | ||
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 | ||
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 | } |