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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2015 Google Inc. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Use of this source code is governed by a BSD-style</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// license that can be found in the LICENSE file or at</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &quot;packager/media/formats/webm/mkv_writer.h&quot;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="keyword">namespace </span>edash_packager {</div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;MkvWriter::MkvWriter() : position_(0) {}</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;MkvWriter::~MkvWriter() {}</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno"><a class="line" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#aad173b6f71e6c93e2dba2a61270f0843"> 16</a></span>&#160;<a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#aad173b6f71e6c93e2dba2a61270f0843">MkvWriter::Open</a>(<span class="keyword">const</span> std::string&amp; name) {</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; DCHECK(!file_);</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; file_.reset(<a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#a0933ccd7df76fcf8fbcfe12c15dbf6c5">File::Open</a>(name.c_str(), <span class="stringliteral">&quot;w&quot;</span>));</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; <span class="keywordflow">if</span> (!file_)</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; <span class="keywordflow">return</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a>(error::FILE_FAILURE, <span class="stringliteral">&quot;Unable to open file for writing.&quot;</span>);</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; <span class="comment">// This may produce an error message; however there isn&#39;t a seekable method</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; <span class="comment">// on File.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; seekable_ = file_-&gt;Seek(0);</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; position_ = 0;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="keywordflow">return</span> Status::OK;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;}</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#aee60c2f736f3a5411529cf9cdd3e21f9"> 29</a></span>&#160;mkvmuxer::int32 <a class="code" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#aee60c2f736f3a5411529cf9cdd3e21f9">MkvWriter::Write</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* buf, mkvmuxer::uint32 len) {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; DCHECK(file_);</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; <span class="keyword">const</span> <span class="keywordtype">char</span>* data = <span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">&gt;</span>(buf);</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; int64_t total_bytes_written = 0;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="keywordflow">while</span> (total_bytes_written &lt; len) {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keyword">const</span> int64_t written =</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; file_-&gt;Write(data + total_bytes_written, len - total_bytes_written);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keywordflow">if</span> (written &lt; 0)</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keywordflow">return</span> written;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; total_bytes_written += written;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; }</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; DCHECK_EQ(total_bytes_written, len);</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; position_ += len;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;}</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a6ca77e888755e920b8d30ccdaef29697"> 48</a></span>&#160;int64_t <a class="code" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a6ca77e888755e920b8d30ccdaef29697">MkvWriter::WriteFromFile</a>(<a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html">File</a>* source) {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">return</span> <a class="code" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a6ca77e888755e920b8d30ccdaef29697">WriteFromFile</a>(source, kWholeFile);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;}</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;</div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#addf53d9c83768538191ba7463e2ce754"> 52</a></span>&#160;int64_t <a class="code" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a6ca77e888755e920b8d30ccdaef29697">MkvWriter::WriteFromFile</a>(<a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html">File</a>* source, uint64_t max_copy) {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; DCHECK(file_);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keyword">const</span> int64_t size = <a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#ad002a97c623840303bf6934055813196">File::CopyFile</a>(source, file_.get(), max_copy);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keywordflow">if</span> (size &lt; 0)</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordflow">return</span> size;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; position_ += size;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keywordflow">return</span> size;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;}</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#ad9aca56b48f2b833b7fb91cb4a5492e0"> 63</a></span>&#160;mkvmuxer::int64 <a class="code" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#ad9aca56b48f2b833b7fb91cb4a5492e0">MkvWriter::Position</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">return</span> position_;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;}</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;</div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a68f61d873bdea1176437af9b1b008aa5"> 67</a></span>&#160;mkvmuxer::int32 <a class="code" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#ad9aca56b48f2b833b7fb91cb4a5492e0">MkvWriter::Position</a>(mkvmuxer::int64 position) {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; DCHECK(file_);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordflow">if</span> (file_-&gt;Seek(position)) {</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; position_ = position;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;}</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;</div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a12cd17b2abad09764d3358534c7dcb5a"> 78</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a12cd17b2abad09764d3358534c7dcb5a">MkvWriter::Seekable</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keywordflow">return</span> seekable_;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;}</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;</div>
<div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a03b39cb0e2b2d18b1031363b72ccd837"> 82</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a03b39cb0e2b2d18b1031363b72ccd837">MkvWriter::ElementStartNotify</a>(mkvmuxer::uint64 element_id,</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; mkvmuxer::int64 position) {}</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;} <span class="comment">// namespace edash_packager</span></div>
<div class="ttc" id="classedash__packager_1_1media_1_1MkvWriter_html_ad9aca56b48f2b833b7fb91cb4a5492e0"><div class="ttname"><a href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#ad9aca56b48f2b833b7fb91cb4a5492e0">edash_packager::media::MkvWriter::Position</a></div><div class="ttdeci">mkvmuxer::int64 Position() const override</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/dc8/mkv__writer_8cc_source.html#l00063">mkv_writer.cc:63</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1File_html_ad002a97c623840303bf6934055813196"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html#ad002a97c623840303bf6934055813196">edash_packager::media::File::CopyFile</a></div><div class="ttdeci">static int64_t CopyFile(File *source, File *destination)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/dfc/file_8cc_source.html#l00232">file.cc:232</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1File_html"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html">edash_packager::media::File</a></div><div class="ttdoc">Define an abstract file interface. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d4d/file_8h_source.html#l00023">file.h:23</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1File_html_a0933ccd7df76fcf8fbcfe12c15dbf6c5"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html#a0933ccd7df76fcf8fbcfe12c15dbf6c5">edash_packager::media::File::Open</a></div><div class="ttdeci">virtual bool Open()=0</div><div class="ttdoc">Internal open. Should not be used directly. </div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1Status_html"><div class="ttname"><a href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">edash_packager::media::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00075">status.h:75</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1MkvWriter_html_a6ca77e888755e920b8d30ccdaef29697"><div class="ttname"><a href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a6ca77e888755e920b8d30ccdaef29697">edash_packager::media::MkvWriter::WriteFromFile</a></div><div class="ttdeci">int64_t WriteFromFile(File *source)</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/dc8/mkv__writer_8cc_source.html#l00048">mkv_writer.cc:48</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1MkvWriter_html_a12cd17b2abad09764d3358534c7dcb5a"><div class="ttname"><a href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a12cd17b2abad09764d3358534c7dcb5a">edash_packager::media::MkvWriter::Seekable</a></div><div class="ttdeci">bool Seekable() const override</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/dc8/mkv__writer_8cc_source.html#l00078">mkv_writer.cc:78</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1MkvWriter_html_aad173b6f71e6c93e2dba2a61270f0843"><div class="ttname"><a href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#aad173b6f71e6c93e2dba2a61270f0843">edash_packager::media::MkvWriter::Open</a></div><div class="ttdeci">Status Open(const std::string &amp;name)</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/dc8/mkv__writer_8cc_source.html#l00016">mkv_writer.cc:16</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1MkvWriter_html_aee60c2f736f3a5411529cf9cdd3e21f9"><div class="ttname"><a href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#aee60c2f736f3a5411529cf9cdd3e21f9">edash_packager::media::MkvWriter::Write</a></div><div class="ttdeci">mkvmuxer::int32 Write(const void *buf, mkvmuxer::uint32 len) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/dc8/mkv__writer_8cc_source.html#l00029">mkv_writer.cc:29</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1MkvWriter_html_a03b39cb0e2b2d18b1031363b72ccd837"><div class="ttname"><a href="../../d4/d8c/classedash__packager_1_1media_1_1MkvWriter.html#a03b39cb0e2b2d18b1031363b72ccd837">edash_packager::media::MkvWriter::ElementStartNotify</a></div><div class="ttdeci">void ElementStartNotify(mkvmuxer::uint64 element_id, mkvmuxer::int64 position) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/dc8/mkv__writer_8cc_source.html#l00082">mkv_writer.cc:82</a></div></div>
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