blob: b9b6de797255067d94b444c1d52575ca9fc62a1b
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 | } |
71 |