<divclass="fragment"><divclass="line"><aname="l00001"></a><spanclass="lineno"> 1</span> <spanclass="comment">// Copyright 2014 Google Inc. All rights reserved.</span></div><divclass="line"><aname="l00002"></a><spanclass="lineno"> 2</span> <spanclass="comment">//</span></div><divclass="line"><aname="l00003"></a><spanclass="lineno"> 3</span> <spanclass="comment">// Use of this source code is governed by a BSD-style</span></div><divclass="line"><aname="l00004"></a><spanclass="lineno"> 4</span> <spanclass="comment">// license that can be found in the LICENSE file or at</span></div><divclass="line"><aname="l00005"></a><spanclass="lineno"> 5</span> <spanclass="comment">// https://developers.google.com/open-source/licenses/bsd</span></div><divclass="line"><aname="l00006"></a><spanclass="lineno"> 6</span> </div><divclass="line"><aname="l00007"></a><spanclass="lineno"> 7</span> <spanclass="preprocessor">#include "packager/media/base/muxer_util.h"</span></div><divclass="line"><aname="l00008"></a><spanclass="lineno"> 8</span> </div><divclass="line"><aname="l00009"></a><spanclass="lineno"> 9</span> <spanclass="preprocessor">#include <inttypes.h></span></div><divclass="line"><aname="l00010"></a><spanclass="lineno"> 10</span> </div><divclass="line"><aname="l00011"></a><spanclass="lineno"> 11</span> <spanclass="preprocessor">#include <string></span></div><divclass="line"><aname="l00012"></a><spanclass="lineno"> 12</span> <spanclass="preprocessor">#include <vector></span></div><divclass="line"><aname="l00013"></a><spanclass="lineno"> 13</span> </div><divclass="line"><aname="l00014"></a><spanclass="lineno"> 14</span> <spanclass="preprocessor">#include "packager/base/logging.h"</span></div><divclass="line"><aname="l00015"></a><spanclass="lineno"> 15</span> <spanclass="preprocessor">#include "packager/base/strings/string_number_conversions.h"</span></div><divclass="line"><aname="l00016"></a><spanclass="lineno"> 16</span> <spanclass="preprocessor">#include "packager/base/strings/string_split.h"</span></div><divclass="line"><aname="l00017"></a><spanclass="lineno"> 17</span> <spanclass="preprocessor">#include "packager/base/strings/stringprintf.h"</span></div><divclass="line"><aname="l00018"></a><spanclass="lineno"> 18</span> <spanclass="preprocessor">#include "packager/media/base/video_stream_info.h"</span></div><divclass="line"><aname="l00019"></a><spanclass="lineno"> 19</span> </div><divclass="line"><aname="l00020"></a><spanclass="lineno"> 20</span> <spanclass="keyword">namespace </span><aclass="code"href="../../d8/daf/namespaceshaka.html">shaka</a> {</div><divclass="line"><aname="l00021"></a><spanclass="lineno"> 21</span> <spanclass="keyword">namespace </span>{</div><divclass="line"><aname="l00022"></a><spanclass="lineno"> 22</span> Status ValidateFormatTag(<spanclass="keyword">const</span> std::string& format_tag) {</div><divclass="line"><aname="l00023"></a><spanclass="lineno"> 23</span> <spanclass="keywordflow">if</span> (format_tag.empty()) {</div><divclass="line"><aname="l00024"></a><spanclass="lineno"> 24</span> <spanclass="keywordflow">return</span> Status(error::INVALID_ARGUMENT, <spanclass="stringliteral">"Format tag should not be empty"</span>);</div><divclass="line"><aname="l00025"></a><spanclass="lineno"> 25</span>  }</div><divclass="line"><aname="l00026"></a><spanclass="lineno"> 26</span> </div><divclass="line"><aname="l00027"></a><spanclass="lineno"> 27</span> <spanclass="comment">// Format tag should follow this prototype: %0[width]d.</span></div><divclass="line"><aname="l00028"></a><spanclass="lineno"> 28</span> <spanclass="keywordflow">if</span> (format_tag.size() > 3 && format_tag[0] == <spanclass="c