| 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 | } |