1/* 2 * Copyright (c) 2011 Reinhard Tartler 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a copy 5 * of this software and associated documentation files (the "Software"), to deal 6 * in the Software without restriction, including without limitation the rights 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 * copies of the Software, and to permit persons to whom the Software is 9 * furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 20 * THE SOFTWARE. 21 */ 22 23/** 24 * @file 25 * @example libavformat/metadata-example.c 26 * Shows how the metadata API can be used in application programs. 27 */ 28 29#include <stdio.h> 30 31#include <libavformat/avformat.h> 32#include <libavutil/dict.h> 33 34int main (int argc, char **argv) 35{ 36 AVFormatContext *fmt_ctx = NULL; 37 AVDictionaryEntry *tag = NULL; 38 int ret; 39 40 if (argc != 2) { 41 printf("usage: %s <input_file>\n" 42 "example program to demonstrate the use of the libavformat metadata API.\n" 43 "\n", argv[0]); 44 return 1; 45 } 46 47 av_register_all(); 48 if ((ret = avformat_open_input(&fmt_ctx, argv[1], NULL, NULL))) 49 return ret; 50 51 while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) 52 printf("%s=%s\n", tag->key, tag->value); 53 54 avformat_free_context(fmt_ctx); 55 return 0; 56} 57