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<li class="navelem"><a class="el" href="../../dir_3f8eec2fc361645de4b1ec14c19fffc7.html">packager</a></li><li class="navelem"><a class="el" href="../../dir_f99dae54fe7170f791f339b952d5067a.html">media</a></li><li class="navelem"><a class="el" href="../../dir_375ba2cfd8fd5b05c50b92d996b9d386.html">formats</a></li><li class="navelem"><a class="el" href="../../dir_b23f8e22c8c095d1c8c0cb8f88104a00.html">webm</a></li> </ul>
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<div class="title">mkv_writer.cc</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2015 Google Inc. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Use of this source code is governed by a BSD-style</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// license that can be found in the LICENSE file or at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>  </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/media/formats/webm/mkv_writer.h"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>  </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  </div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> MkvWriter::MkvWriter() : position_(0) {}</div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> MkvWriter::~MkvWriter() {}</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"><a class="line" href="../../d1/d0a/classshaka_1_1media_1_1MkvWriter.html#a9490dbf4bc02903484acb68f038f7fe2"> 16</a></span> <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> MkvWriter::Open(<span class="keyword">const</span> std::string& name) {</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  DCHECK(!file_);</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  file_.reset(File::Open(name.c_str(), <span class="stringliteral">"w"</span>));</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keywordflow">if</span> (!file_)</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keywordflow">return</span> <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a>(error::FILE_FAILURE, <span class="stringliteral">"Unable to open file for writing."</span>);</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="comment">// This may produce an error message; however there isn't a seekable method</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="comment">// on File.</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  seekable_ = file_->Seek(0);</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  position_ = 0;</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> }</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
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<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="../../d1/d0a/classshaka_1_1media_1_1MkvWriter.html#af560b12e0298ca3dcd8f88fddff1443b"> 29</a></span> <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> MkvWriter::Close() {</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keyword">const</span> std::string file_name = file_->file_name();</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">if</span> (!file_.release()->Close()) {</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordflow">return</span> <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a>(</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  error::FILE_FAILURE,</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="stringliteral">"Cannot close file "</span> + file_name +</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="stringliteral">", possibly file permission issue or running out of disk space."</span>);</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  }</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> }</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div>
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<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="../../d1/d0a/classshaka_1_1media_1_1MkvWriter.html#a2468514d1d9efdb15a9e4df2e44b75d8"> 40</a></span> mkvmuxer::int32 MkvWriter::Write(<span class="keyword">const</span> <span class="keywordtype">void</span>* buf, mkvmuxer::uint32 len) {</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  DCHECK(file_);</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* data = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(buf);</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  int64_t total_bytes_written = 0;</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">while</span> (total_bytes_written < len) {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">const</span> int64_t written =</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  file_->Write(data + total_bytes_written, len - total_bytes_written);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span> (written < 0)</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> written;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  total_bytes_written += written;</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  }</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  DCHECK_EQ(total_bytes_written, len);</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  position_ += len;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> }</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  </div>
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<div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="../../d1/d0a/classshaka_1_1media_1_1MkvWriter.html#ab331684a758a93bf0c77fa224fe429ea"> 59</a></span> int64_t MkvWriter::WriteFromFile(<a class="code" href="../../d3/d73/classshaka_1_1File.html">File</a>* source) {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> WriteFromFile(source, kWholeFile);</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> }</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  </div>
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<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="../../d1/d0a/classshaka_1_1media_1_1MkvWriter.html#a2dfac99ec5531ca2e102e5b145bb29ed"> 63</a></span> int64_t MkvWriter::WriteFromFile(<a class="code" href="../../d3/d73/classshaka_1_1File.html">File</a>* source, int64_t max_copy) {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  DCHECK(file_);</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">const</span> int64_t size = File::CopyFile(source, file_.get(), max_copy);</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (size < 0)</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">return</span> size;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  position_ += size;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> size;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> }</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
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<div class="line"><a name="l00074"></a><span class="lineno"><a class="line" href="../../d1/d0a/classshaka_1_1media_1_1MkvWriter.html#a468dcd83a7c087cc83e755703488e92b"> 74</a></span> mkvmuxer::int64 MkvWriter::Position()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> position_;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> }</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
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<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="../../d1/d0a/classshaka_1_1media_1_1MkvWriter.html#a33db41e57d0ef5a35b7f929e1a1d90db"> 78</a></span> mkvmuxer::int32 MkvWriter::Position(mkvmuxer::int64 position) {</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  DCHECK(file_);</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  </div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> (file_->Seek(position)) {</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  position_ = position;</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> }</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div>
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<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="../../d1/d0a/classshaka_1_1media_1_1MkvWriter.html#a8d0429e7922752db3f01d43e6340465a"> 89</a></span> <span class="keywordtype">bool</span> MkvWriter::Seekable()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> seekable_;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> }</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
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<div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="../../d1/d0a/classshaka_1_1media_1_1MkvWriter.html#a6603ba573e802e660921f329192738f3"> 93</a></span> <span class="keywordtype">void</span> MkvWriter::ElementStartNotify(mkvmuxer::uint64 element_id,</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  mkvmuxer::int64 position) {}</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  </div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> } <span class="comment">// namespace shaka</span></div>
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<div class="ttc" id="aclassshaka_1_1File_html"><div class="ttname"><a href="../../d3/d73/classshaka_1_1File.html">shaka::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#l00027">file.h:27</a></div></div>
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<div class="ttc" id="aclassshaka_1_1Status_html"><div class="ttname"><a href="../../d2/d20/classshaka_1_1Status.html">shaka::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00110">status.h:110</a></div></div>
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<div class="ttc" id="anamespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
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