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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2014 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/base/muxer.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="preprocessor">#include &lt;algorithm&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160; </div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/media_sample.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/muxer_util.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &quot;packager/status_macros.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">const</span> <span class="keywordtype">bool</span> kInitialEncryptionInfo = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">const</span> int64_t kStartTime = 0;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;} <span class="comment">// namespace</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;Muxer::Muxer(<span class="keyword">const</span> MuxerOptions&amp; options) : options_(options) {</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; <span class="comment">// &quot;$&quot; is only allowed if the output file name is a template, which is used to</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; <span class="comment">// support one file per Representation per Period when there are Ad Cues.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; <span class="keywordflow">if</span> (options_.output_file_name.find(<span class="stringliteral">&quot;$&quot;</span>) != std::string::npos)</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; output_file_template_ = options_.output_file_name;</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"> 29</span>&#160;Muxer::~Muxer() {}</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="../../df/d46/classshaka_1_1media_1_1Muxer.html#a9204fe352d13cea8a367ae9c14e9639e"> 31</a></span>&#160;<span class="keywordtype">void</span> Muxer::Cancel() {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; cancelled_ = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;}</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; </div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="../../df/d46/classshaka_1_1media_1_1Muxer.html#a0e76dd0a5c07dd538221459365ae824a"> 35</a></span>&#160;<span class="keywordtype">void</span> Muxer::SetMuxerListener(std::unique_ptr&lt;MuxerListener&gt; muxer_listener) {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; muxer_listener_ = std::move(muxer_listener);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;}</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; </div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="../../df/d46/classshaka_1_1media_1_1Muxer.html#a25a146d553c385aad70dbff6b3e87eec"> 39</a></span>&#160;<span class="keywordtype">void</span> Muxer::SetProgressListener(</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; std::unique_ptr&lt;ProgressListener&gt; progress_listener) {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; progress_listener_ = std::move(progress_listener);</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; </div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="../../df/d46/classshaka_1_1media_1_1Muxer.html#aec730b070245231a0887787005c06eee"> 44</a></span>&#160;<a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> Muxer::Process(std::unique_ptr&lt;StreamData&gt; stream_data) {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> status;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">switch</span> (stream_data-&gt;stream_data_type) {</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keywordflow">case</span> StreamDataType::kStreamInfo:</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; streams_.push_back(std::move(stream_data-&gt;stream_info));</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">return</span> ReinitializeMuxer(kStartTime);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordflow">case</span> StreamDataType::kSegmentInfo: {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">const</span> <span class="keyword">auto</span>&amp; segment_info = *stream_data-&gt;segment_info;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">if</span> (muxer_listener_ &amp;&amp; segment_info.is_encrypted) {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d7/d34/structshaka_1_1media_1_1EncryptionConfig.html">EncryptionConfig</a>* encryption_config =</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; segment_info.key_rotation_encryption_config.get();</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="comment">// Only call OnEncryptionInfoReady again when key updates.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keywordflow">if</span> (encryption_config &amp;&amp; encryption_config-&gt;key_id != current_key_id_) {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; muxer_listener_-&gt;OnEncryptionInfoReady(</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; !kInitialEncryptionInfo, encryption_config-&gt;protection_scheme,</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; encryption_config-&gt;key_id, encryption_config-&gt;constant_iv,</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; encryption_config-&gt;key_system_info);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; current_key_id_ = encryption_config-&gt;key_id;</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"> 63</span>&#160; <span class="keywordflow">if</span> (!encryption_started_) {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; encryption_started_ = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; muxer_listener_-&gt;OnEncryptionStart();</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"> 67</span>&#160; }</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">return</span> FinalizeSegment(stream_data-&gt;stream_index, segment_info);</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">case</span> StreamDataType::kMediaSample:</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keywordflow">return</span> AddMediaSample(stream_data-&gt;stream_index,</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; *stream_data-&gt;media_sample);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">case</span> StreamDataType::kTextSample:</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">return</span> AddTextSample(stream_data-&gt;stream_index,</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; *stream_data-&gt;text_sample);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">case</span> StreamDataType::kCueEvent:</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordflow">if</span> (muxer_listener_) {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keyword">const</span> int64_t time_scale =</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; streams_[stream_data-&gt;stream_index]-&gt;time_scale();</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span> time_in_seconds = stream_data-&gt;cue_event-&gt;time_in_seconds;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keyword">const</span> int64_t scaled_time =</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keyword">static_cast&lt;</span>int64_t<span class="keyword">&gt;</span>(time_in_seconds * time_scale);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; muxer_listener_-&gt;OnCueEvent(scaled_time,</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; stream_data-&gt;cue_event-&gt;cue_data);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="comment">// Finalize and re-initialize Muxer to generate different content files.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keywordflow">if</span> (!output_file_template_.empty()) {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; RETURN_IF_ERROR(Finalize());</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; RETURN_IF_ERROR(ReinitializeMuxer(scaled_time));</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; }</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; }</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; VLOG(3) &lt;&lt; <span class="stringliteral">&quot;Stream data type &quot;</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; &lt;&lt; <span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(stream_data-&gt;stream_data_type) &lt;&lt; <span class="stringliteral">&quot; ignored.&quot;</span>;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="comment">// No dispatch for muxer.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keywordflow">return</span> Status::OK;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;}</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; </div>
<div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="../../df/d46/classshaka_1_1media_1_1Muxer.html#a9f08c1385506636b800769480869e04f"> 102</a></span>&#160;<a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> Muxer::OnFlushRequest(<span class="keywordtype">size_t</span> input_stream_index) {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <span class="keywordflow">return</span> Finalize();</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;}</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> Muxer::AddMediaSample(<span class="keywordtype">size_t</span> stream_id, <span class="keyword">const</span> <a class="code" href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html">MediaSample</a>&amp; sample) {</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordflow">return</span> Status::OK;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;}</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> Muxer::AddTextSample(<span class="keywordtype">size_t</span> stream_id, <span class="keyword">const</span> TextSample&amp; sample) {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keywordflow">return</span> Status::OK;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;}</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;Status Muxer::ReinitializeMuxer(int64_t timestamp) {</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keywordflow">if</span> (muxer_listener_ &amp;&amp; streams_.back()-&gt;is_encrypted()) {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keyword">const</span> EncryptionConfig&amp; encryption_config =</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; streams_.back()-&gt;encryption_config();</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; muxer_listener_-&gt;OnEncryptionInfoReady(</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; kInitialEncryptionInfo, encryption_config.protection_scheme,</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; encryption_config.key_id, encryption_config.constant_iv,</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; encryption_config.key_system_info);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; current_key_id_ = encryption_config.key_id;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; }</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="keywordflow">if</span> (!output_file_template_.empty()) {</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="comment">// Update |output_file_name| with an actual file name, which will be used by</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="comment">// the subclasses.</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; options_.output_file_name =</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; GetSegmentName(output_file_template_, timestamp, output_file_index_++,</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; options_.bandwidth);</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <span class="keywordflow">return</span> InitializeMuxer();</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;}</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;} <span class="comment">// namespace shaka</span></div>
<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>
<div class="ttc" id="aclassshaka_1_1media_1_1MediaSample_html"><div class="ttname"><a href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html">shaka::media::MediaSample</a></div><div class="ttdoc">Class to hold a media sample.</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d80/media__sample_8h_source.html#l00022">media_sample.h:22</a></div></div>
<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>
<div class="ttc" id="astructshaka_1_1media_1_1EncryptionConfig_html"><div class="ttname"><a href="../../d7/d34/structshaka_1_1media_1_1EncryptionConfig.html">shaka::media::EncryptionConfig</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d05/encryption__config_8h_source.html#l00016">encryption_config.h:16</a></div></div>
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