1/* 2 * copyright (c) 2009 Michael Niedermayer 3 * 4 * This file is part of Libav. 5 * 6 * Libav 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 * Libav 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 Libav; 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#if FF_API_OLD_METADATA2 27AVDictionaryEntry * 28av_metadata_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags) 29{ 30 return av_dict_get(m, key, prev, flags); 31} 32 33int av_metadata_set2(AVDictionary **pm, const char *key, const char *value, int flags) 34{ 35 return av_dict_set(pm, key, value, flags); 36} 37 38void av_metadata_conv(AVFormatContext *ctx, const AVMetadataConv *d_conv, 39 const AVMetadataConv *s_conv) 40{ 41 return; 42} 43 44void av_metadata_free(AVDictionary **pm) 45{ 46 av_dict_free(pm); 47} 48 49void av_metadata_copy(AVDictionary **dst, AVDictionary *src, int flags) 50{ 51 av_dict_copy(dst, src, flags); 52} 53#endif 54 55void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv, 56 const AVMetadataConv *s_conv) 57{ 58 /* TODO: use binary search to look up the two conversion tables 59 if the tables are getting big enough that it would matter speed wise */ 60 const AVMetadataConv *sc, *dc; 61 AVDictionaryEntry *mtag = NULL; 62 AVDictionary *dst = NULL; 63 const char *key; 64 65 if (d_conv == s_conv) 66 return; 67 68 while ((mtag = av_dict_get(*pm, "", mtag, AV_DICT_IGNORE_SUFFIX))) { 69 key = mtag->key; 70 if (s_conv) 71 for (sc=s_conv; sc->native; sc++) 72 if (!av_strcasecmp(key, sc->native)) { 73 key = sc->generic; 74 break; 75 } 76 if (d_conv) 77 for (dc=d_conv; dc->native; dc++) 78 if (!av_strcasecmp(key, dc->generic)) { 79 key = dc->native; 80 break; 81 } 82 av_dict_set(&dst, key, mtag->value, 0); 83 } 84 av_dict_free(pm); 85 *pm = dst; 86} 87 88void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv, 89 const AVMetadataConv *s_conv) 90{ 91 int i; 92 ff_metadata_conv(&ctx->metadata, d_conv, s_conv); 93 for (i=0; i<ctx->nb_streams ; i++) 94 ff_metadata_conv(&ctx->streams [i]->metadata, d_conv, s_conv); 95 for (i=0; i<ctx->nb_chapters; i++) 96 ff_metadata_conv(&ctx->chapters[i]->metadata, d_conv, s_conv); 97 for (i=0; i<ctx->nb_programs; i++) 98 ff_metadata_conv(&ctx->programs[i]->metadata, d_conv, s_conv); 99} 100 101