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<div class="title">muxer.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 2014 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/base/muxer.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="preprocessor">#include "packager/media/base/media_sample.h"</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "packager/media/base/media_stream.h"</span></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> <span class="keyword">namespace </span>edash_packager {</div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> Muxer::Muxer(<span class="keyword">const</span> MuxerOptions& options)</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  : options_(options),</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  initialized_(false),</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  encryption_key_source_(NULL),</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  max_sd_pixels_(0),</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  clear_lead_in_seconds_(0),</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  crypto_period_duration_in_seconds_(0),</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  cancelled_(false),</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  clock_(NULL) {}</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> Muxer::~Muxer() {}</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
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<div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a5452ae82c2f8a0df8f855fc35e717f04"> 27</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a5452ae82c2f8a0df8f855fc35e717f04">Muxer::SetKeySource</a>(<a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html">KeySource</a>* encryption_key_source,</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  uint32_t max_sd_pixels,</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordtype">double</span> clear_lead_in_seconds,</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordtype">double</span> crypto_period_duration_in_seconds) {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  DCHECK(encryption_key_source);</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  encryption_key_source_ = encryption_key_source;</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  max_sd_pixels_ = max_sd_pixels;</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  clear_lead_in_seconds_ = clear_lead_in_seconds;</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  crypto_period_duration_in_seconds_ = crypto_period_duration_in_seconds;</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> </div>
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<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a77c7a214383f64f822d479d226750bf5"> 38</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a77c7a214383f64f822d479d226750bf5">Muxer::AddStream</a>(<a class="code" href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html">MediaStream</a>* stream) {</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  DCHECK(stream);</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  stream-><a class="code" href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html#a05b7188c263dc71b00635415bbdfd37f">Connect</a>(<span class="keyword">this</span>);</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  streams_.push_back(stream);</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> </div>
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<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa2ef293cdb921d97bb39d038f29da8c4"> 44</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa2ef293cdb921d97bb39d038f29da8c4">Muxer::Run</a>() {</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  DCHECK(!streams_.empty());</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> status;</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="comment">// Start the streams.</span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">for</span> (std::vector<MediaStream*>::iterator it = streams_.begin();</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  it != streams_.end();</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  ++it) {</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  status = (*it)->Start(MediaStream::kPull);</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  uint32_t current_stream_id = 0;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">while</span> (status.ok()) {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">if</span> (cancelled_)</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a>(error::CANCELLED, <span class="stringliteral">"muxer run cancelled"</span>);</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>  scoped_refptr<MediaSample> sample;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  status = streams_[current_stream_id]->PullSample(&sample);</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  status = AddSample(streams_[current_stream_id], sample);</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// Switch to next stream if the current stream is ready for fragmentation.</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> (status.error_code() == error::FRAGMENT_FINALIZED) {</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  current_stream_id = (current_stream_id + 1) % streams_.size();</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  status.Clear();</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"> 74</span>  <span class="comment">// Finalize the muxer after reaching end of stream.</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> status.error_code() == error::END_OF_STREAM ? Finalize() : status;</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="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#abecb4fbe4bcd5257857e397f7f3d096b"> 78</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#abecb4fbe4bcd5257857e397f7f3d096b">Muxer::Cancel</a>() {</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  cancelled_ = <span class="keyword">true</span>;</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> </div>
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<div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa8ea4384b819187c51f67ad901aca148"> 82</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa8ea4384b819187c51f67ad901aca148">Muxer::SetMuxerListener</a>(scoped_ptr<MuxerListener> muxer_listener) {</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  muxer_listener_ = muxer_listener.Pass();</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> }</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a04959bfe66cdb16053326938df9d445a"> 86</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a04959bfe66cdb16053326938df9d445a">Muxer::SetProgressListener</a>(</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  scoped_ptr<ProgressListener> progress_listener) {</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  progress_listener_ = progress_listener.Pass();</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> }</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> Muxer::AddSample(<span class="keyword">const</span> <a class="code" href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html">MediaStream</a>* stream,</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  scoped_refptr<MediaSample> sample) {</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  DCHECK(std::find(streams_.begin(), streams_.end(), stream) != streams_.end());</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">if</span> (!initialized_) {</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> status = Initialize();</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  initialized_ = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">if</span> (sample->end_of_stream()) {</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// EOS sample should be sent only when the sample was pushed from Demuxer</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// to Muxer. In this case, there should be only one stream in Muxer.</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  DCHECK_EQ(1u, streams_.size());</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">return</span> Finalize();</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sample->is_encrypted()) {</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  LOG(ERROR) << <span class="stringliteral">"Unable to multiplex encrypted media sample"</span>;</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">return</span> Status(error::INTERNAL_ERROR, <span class="stringliteral">"Encrypted media sample."</span>);</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> DoAddSample(stream, sample);</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> }</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> } <span class="comment">// namespace edash_packager</span></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_aa8ea4384b819187c51f67ad901aca148"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa8ea4384b819187c51f67ad901aca148">edash_packager::media::Muxer::SetMuxerListener</a></div><div class="ttdeci">void SetMuxerListener(scoped_ptr< MuxerListener > muxer_listener)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00082">muxer.cc:82</a></div></div>
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<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#l00076">status.h:76</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_a04959bfe66cdb16053326938df9d445a"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a04959bfe66cdb16053326938df9d445a">edash_packager::media::Muxer::SetProgressListener</a></div><div class="ttdeci">void SetProgressListener(scoped_ptr< ProgressListener > progress_listener)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00086">muxer.cc:86</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html">edash_packager::media::KeySource</a></div><div class="ttdoc">KeySource is responsible for encryption key acquisition. </div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00029">key_source.h:29</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_aa2ef293cdb921d97bb39d038f29da8c4"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa2ef293cdb921d97bb39d038f29da8c4">edash_packager::media::Muxer::Run</a></div><div class="ttdeci">Status Run()</div><div class="ttdoc">Drive the remuxing from muxer side (pull). </div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00044">muxer.cc:44</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_a77c7a214383f64f822d479d226750bf5"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a77c7a214383f64f822d479d226750bf5">edash_packager::media::Muxer::AddStream</a></div><div class="ttdeci">void AddStream(MediaStream *stream)</div><div class="ttdoc">Add video/audio stream. </div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00038">muxer.cc:38</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1MediaStream_html_a05b7188c263dc71b00635415bbdfd37f"><div class="ttname"><a href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html#a05b7188c263dc71b00635415bbdfd37f">edash_packager::media::MediaStream::Connect</a></div><div class="ttdeci">void Connect(Muxer *muxer)</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d15/media__stream_8cc_source.html#l00055">media_stream.cc:55</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_abecb4fbe4bcd5257857e397f7f3d096b"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#abecb4fbe4bcd5257857e397f7f3d096b">edash_packager::media::Muxer::Cancel</a></div><div class="ttdeci">void Cancel()</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00078">muxer.cc:78</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_a5452ae82c2f8a0df8f855fc35e717f04"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a5452ae82c2f8a0df8f855fc35e717f04">edash_packager::media::Muxer::SetKeySource</a></div><div class="ttdeci">void SetKeySource(KeySource *encryption_key_source, uint32_t max_sd_pixels, double clear_lead_in_seconds, double crypto_period_duration_in_seconds)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00027">muxer.cc:27</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1MediaStream_html"><div class="ttname"><a href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html">edash_packager::media::MediaStream</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d93/media__stream_8h_source.html#l00026">media_stream.h:26</a></div></div>
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</div><!-- fragment --></div><!-- contents -->
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<!-- start footer part -->
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Generated on Thu Dec 31 2015 02:07:51 for DASH Media Packaging SDK by  <a href="http://www.doxygen.org/index.html">
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</a> 1.8.6
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