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<a href="timestamp_8h.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"> * This file is part of FFmpeg.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * FFmpeg is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00006"></a>00006 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00007"></a>00007 <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * FFmpeg is distributed in the hope that it will be useful,</span>
<a name="l00010"></a>00010 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00011"></a>00011 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00012"></a>00012 <span class="comment"> * Lesser General Public License for more details.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span>
<a name="l00015"></a>00015 <span class="comment"> * License along with FFmpeg; if not, write to the Free Software</span>
<a name="l00016"></a>00016 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00017"></a>00017 <span class="comment"> */</span>
<a name="l00018"></a>00018 <span class="comment"></span>
<a name="l00019"></a>00019 <span class="comment">/**</span>
<a name="l00020"></a>00020 <span class="comment"> * @file</span>
<a name="l00021"></a>00021 <span class="comment"> * timestamp utils, mostly useful for debugging/logging purposes</span>
<a name="l00022"></a>00022 <span class="comment"> */</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#ifndef AVUTIL_TIMESTAMP_H</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_TIMESTAMP_H</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="common_8h.html" title="common internal and external API header">common.h</a>"</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#if defined(__cplusplus) && !defined(__STDC_FORMAT_MACROS) && !defined(PRId64)</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#error missing -D__STDC_FORMAT_MACROS / #define __STDC_FORMAT_MACROS</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span>
<a name="l00033"></a><a class="code" href="timestamp_8h.html#ae37ff84f45d95eb72f7bef6cd6b06bb9">00033</a> <span class="preprocessor">#define AV_TS_MAX_STRING_SIZE 32</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00035"></a>00035 <span class="comment">/**</span>
<a name="l00036"></a>00036 <span class="comment"> * Fill the provided buffer with a string containing a timestamp</span>
<a name="l00037"></a>00037 <span class="comment"> * representation.</span>
<a name="l00038"></a>00038 <span class="comment"> *</span>
<a name="l00039"></a>00039 <span class="comment"> * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE</span>
<a name="l00040"></a>00040 <span class="comment"> * @param ts the timestamp to represent</span>
<a name="l00041"></a>00041 <span class="comment"> * @return the buffer in input</span>
<a name="l00042"></a>00042 <span class="comment"> */</span>
<a name="l00043"></a><a class="code" href="timestamp_8h.html#ac227a6941d6e760371a5391290db38eb">00043</a> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">char</span> *<a class="code" href="timestamp_8h.html#ac227a6941d6e760371a5391290db38eb" title="Fill the provided buffer with a string containing a timestamp representation.">av_ts_make_string</a>(<span class="keywordtype">char</span> *buf, int64_t ts)
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 <span class="keywordflow">if</span> (ts == <a class="code" href="group__lavu__time.html#ga2eaefe702f95f619ea6f2d08afa01be1" title="Undefined timestamp value.">AV_NOPTS_VALUE</a>) snprintf(buf, <a class="code" href="timestamp_8h.html#ae37ff84f45d95eb72f7bef6cd6b06bb9">AV_TS_MAX_STRING_SIZE</a>, <span class="stringliteral">"NOPTS"</span>);
<a name="l00046"></a>00046 <span class="keywordflow">else</span> snprintf(buf, <a class="code" href="timestamp_8h.html#ae37ff84f45d95eb72f7bef6cd6b06bb9">AV_TS_MAX_STRING_SIZE</a>, <span class="stringliteral">"%"</span>PRId64, ts);
<a name="l00047"></a>00047 <span class="keywordflow">return</span> buf;
<a name="l00048"></a>00048 }
<a name="l00049"></a>00049 <span class="comment"></span>
<a name="l00050"></a>00050 <span class="comment">/**</span>
<a name="l00051"></a>00051 <span class="comment"> * Convenience macro, the return value should be used only directly in</span>
<a name="l00052"></a>00052 <span class="comment"> * function arguments but never stand-alone.</span>
<a name="l00053"></a>00053 <span class="comment"> */</span>
<a name="l00054"></a><a class="code" href="timestamp_8h.html#a86d797e907fa454ed5fd34bfb0bcd747">00054</a> <span class="preprocessor">#define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts)</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00056"></a>00056 <span class="comment">/**</span>
<a name="l00057"></a>00057 <span class="comment"> * Fill the provided buffer with a string containing a timestamp time</span>
<a name="l00058"></a>00058 <span class="comment"> * representation.</span>
<a name="l00059"></a>00059 <span class="comment"> *</span>
<a name="l00060"></a>00060 <span class="comment"> * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE</span>
<a name="l00061"></a>00061 <span class="comment"> * @param ts the timestamp to represent</span>
<a name="l00062"></a>00062 <span class="comment"> * @param tb the timebase of the timestamp</span>
<a name="l00063"></a>00063 <span class="comment"> * @return the buffer in input</span>
<a name="l00064"></a>00064 <span class="comment"> */</span>
<a name="l00065"></a><a class="code" href="timestamp_8h.html#a6b063ccd14f9c6c5742e0a81d40580df">00065</a> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">char</span> *<a class="code" href="timestamp_8h.html#a6b063ccd14f9c6c5742e0a81d40580df" title="Fill the provided buffer with a string containing a timestamp time representation.">av_ts_make_time_string</a>(<span class="keywordtype">char</span> *buf, int64_t ts, <a class="code" href="structAVRational.html" title="rational number numerator/denominator">AVRational</a> *tb)
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 <span class="keywordflow">if</span> (ts == <a class="code" href="group__lavu__time.html#ga2eaefe702f95f619ea6f2d08afa01be1" title="Undefined timestamp value.">AV_NOPTS_VALUE</a>) snprintf(buf, <a class="code" href="timestamp_8h.html#ae37ff84f45d95eb72f7bef6cd6b06bb9">AV_TS_MAX_STRING_SIZE</a>, <span class="stringliteral">"NOPTS"</span>);
<a name="l00068"></a>00068 <span class="keywordflow">else</span> snprintf(buf, <a class="code" href="timestamp_8h.html#ae37ff84f45d95eb72f7bef6cd6b06bb9">AV_TS_MAX_STRING_SIZE</a>, <span class="stringliteral">"%.6g"</span>, <a class="code" href="group__lavu__math.html#ga935dbbf6bde8dfe5fa7ddb1da582eb07" title="Convert rational to double.">av_q2d</a>(*tb) * ts);
<a name="l00069"></a>00069 <span class="keywordflow">return</span> buf;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071 <span class="comment"></span>
<a name="l00072"></a>00072 <span class="comment">/**</span>
<a name="l00073"></a>00073 <span class="comment"> * Convenience macro, the return value should be used only directly in</span>
<a name="l00074"></a>00074 <span class="comment"> * function arguments but never stand-alone.</span>
<a name="l00075"></a>00075 <span class="comment"> */</span>
<a name="l00076"></a><a class="code" href="timestamp_8h.html#ad344b91ede6b86fc0a530611293f42da">00076</a> <span class="preprocessor">#define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb)</span>
<a name="l00077"></a>00077 <span class="preprocessor"></span>
<a name="l00078"></a>00078 <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_TIMESTAMP_H */</span>
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