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 26void 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 59void 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