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<div id="projectname">FFmpeg
 <span id="projectnumber">2.7.1</span>
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<div class="title">doc/examples/metadata.c</div> </div>
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<a href="metadata_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (c) 2011 Reinhard Tartler</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span>
<a name="l00005"></a>00005 <span class="comment"> * of this software and associated documentation files (the "Software"), to deal</span>
<a name="l00006"></a>00006 <span class="comment"> * in the Software without restriction, including without limitation the rights</span>
<a name="l00007"></a>00007 <span class="comment"> * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span>
<a name="l00008"></a>00008 <span class="comment"> * copies of the Software, and to permit persons to whom the Software is</span>
<a name="l00009"></a>00009 <span class="comment"> * furnished to do so, subject to the following conditions:</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * The above copyright notice and this permission notice shall be included in</span>
<a name="l00012"></a>00012 <span class="comment"> * all copies or substantial portions of the Software.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span>
<a name="l00015"></a>00015 <span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
<a name="l00016"></a>00016 <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL</span>
<a name="l00017"></a>00017 <span class="comment"> * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
<a name="l00018"></a>00018 <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span>
<a name="l00019"></a>00019 <span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN</span>
<a name="l00020"></a>00020 <span class="comment"> * THE SOFTWARE.</span>
<a name="l00021"></a>00021 <span class="comment"> */</span>
<a name="l00022"></a>00022 <span class="comment"></span>
<a name="l00023"></a>00023 <span class="comment">/**</span>
<a name="l00024"></a>00024 <span class="comment"> * @file</span>
<a name="l00025"></a>00025 <span class="comment"> * Shows how the metadata API can be used in application programs.</span>
<a name="l00026"></a>00026 <span class="comment"> * @example metadata.c</span>
<a name="l00027"></a>00027 <span class="comment"> */</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include <stdio.h></span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#include <<a class="code" href="avformat_8h.html" title="Main libavformat public API header.">libavformat/avformat.h</a>></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <<a class="code" href="dict_8h.html" title="Public dictionary API.">libavutil/dict.h</a>></span>
<a name="l00033"></a>00033
<a name="l00034"></a><a class="code" href="metadata_8c.html#a3c04138a5bfe5d72780bb7e82a18e627">00034</a> <span class="keywordtype">int</span> <a class="code" href="avio__list__dir_8c.html#a0ddf1224851353fc92bfbff6f499fa97">main</a> (<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 <a class="code" href="structAVFormatContext.html" title="Format I/O context.">AVFormatContext</a> *<a class="code" href="demuxing__decoding_8c.html#a409462acdf7aebe5bfbe1bcd811efa5d">fmt_ctx</a> = NULL;
<a name="l00037"></a>00037 <a class="code" href="structAVDictionaryEntry.html">AVDictionaryEntry</a> *tag = NULL;
<a name="l00038"></a>00038 <span class="keywordtype">int</span> ret;
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="keywordflow">if</span> (argc != 2) {
<a name="l00041"></a>00041 printf(<span class="stringliteral">"usage: %s <input_file>\n"</span>
<a name="l00042"></a>00042 <span class="stringliteral">"example program to demonstrate the use of the libavformat metadata API.\n"</span>
<a name="l00043"></a>00043 <span class="stringliteral">"\n"</span>, argv[0]);
<a name="l00044"></a>00044 <span class="keywordflow">return</span> 1;
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <a class="code" href="group__lavf__core.html#ga917265caec45ef5a0646356ed1a507e3" title="Initialize libavformat and register all the muxers, demuxers and protocols.">av_register_all</a>();
<a name="l00048"></a>00048 <span class="keywordflow">if</span> ((ret = <a class="code" href="group__lavf__decoding.html#ga10a404346c646e4ab58f4ed798baca32" title="Open an input stream and read the header.">avformat_open_input</a>(&fmt_ctx, argv[1], NULL, NULL)))
<a name="l00049"></a>00049 <span class="keywordflow">return</span> ret;
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keywordflow">while</span> ((tag = <a class="code" href="group__lavu__dict.html#gae67f143237b2cb2936c9b147aa6dfde3" title="Get a dictionary entry with matching key.">av_dict_get</a>(fmt_ctx-><a class="code" href="structAVFormatContext.html#a3019a56080ed2e3297ff25bc2ff88adf" title="Metadata that applies to the whole file.">metadata</a>, <span class="stringliteral">""</span>, tag, <a class="code" href="group__lavu__dict.html#ga341bbd1ea599dfb0510f419e5272fecc" title="Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.">AV_DICT_IGNORE_SUFFIX</a>)))
<a name="l00052"></a>00052 printf(<span class="stringliteral">"%s=%s\n"</span>, tag-><a class="code" href="structAVDictionaryEntry.html#a38fc80176f8f839282bb61c03392e194">key</a>, tag-><a class="code" href="structAVDictionaryEntry.html#aa38678f2cad36f120d42e56449c5edb4">value</a>);
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <a class="code" href="group__lavf__decoding.html#gae804b99aec044690162b8b9b110236a4" title="Close an opened input AVFormatContext.">avformat_close_input</a>(&fmt_ctx);
<a name="l00055"></a>00055 <span class="keywordflow">return</span> 0;
<a name="l00056"></a>00056 }
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