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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_f74090996960c752a82246b98a23aa62.html">trick_play</a></li> </ul>
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<div class="title">trick_play_handler.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 2017 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/trick_play/trick_play_handler.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/base/logging.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/video_stream_info.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><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</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> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kStreamIndexIn = 0;</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kStreamIndexOut = 0;</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> } <span class="comment">// namespace</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> TrickPlayHandler::TrickPlayHandler(uint32_t factor) : factor_(factor) {</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  DCHECK_GE(factor, 1u)</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  << <span class="stringliteral">"Trick Play Handles must have a factor of 1 or higher."</span>;</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> }</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> Status TrickPlayHandler::InitializeInternal() {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keywordflow">return</span> Status::OK;</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"> 27</span>  </div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> Status TrickPlayHandler::Process(std::unique_ptr<StreamData> stream_data) {</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  DCHECK(stream_data);</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  DCHECK_EQ(stream_data->stream_index, kStreamIndexIn);</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordflow">switch</span> (stream_data->stream_data_type) {</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">case</span> StreamDataType::kStreamInfo:</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">return</span> OnStreamInfo(*stream_data->stream_info);</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordflow">case</span> StreamDataType::kSegmentInfo:</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">return</span> OnSegmentInfo(std::move(stream_data->segment_info));</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>  <span class="keywordflow">case</span> StreamDataType::kMediaSample:</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">return</span> OnMediaSample(*stream_data->media_sample);</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">case</span> StreamDataType::kCueEvent:</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// Add the cue event to be dispatched later.</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  delayed_messages_.push_back(std::move(stream_data));</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">return</span> Status::OK;</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>  <span class="keywordflow">default</span>:</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">return</span> Status(error::TRICK_PLAY_ERROR,</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="stringliteral">"Trick play only supports stream info, segment info, and "</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="stringliteral">"media sample messages."</span>);</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</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> Status TrickPlayHandler::OnFlushRequest(<span class="keywordtype">size_t</span> input_stream_index) {</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  DCHECK_EQ(input_stream_index, 0u);</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>  <span class="comment">// Send everything out in its "as-is" state as we no longer need to update</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">// anything.</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  Status s;</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">while</span> (s.ok() && delayed_messages_.size()) {</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  s.Update(<a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#afe98a4fd19eabe0fc78afc91959c34a6">Dispatch</a>(std::move(delayed_messages_.front())));</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  delayed_messages_.pop_front();</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> s.ok() ? <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#ab644ca7b0a0dbcbc42936f2dfb979ca5">MediaHandler::FlushAllDownstreams</a>() : s;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> }</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> Status TrickPlayHandler::OnStreamInfo(<span class="keyword">const</span> StreamInfo& info) {</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> (info.stream_type() != kStreamVideo) {</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> Status(error::TRICK_PLAY_ERROR,</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="stringliteral">"Trick play does not support non-video stream"</span>);</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">// Copy the video so we can edit it. Set play back rate to be zero. It will be</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// updated later before being dispatched downstream.</span></div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  video_info_ = std::make_shared<VideoStreamInfo>(</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">static_cast<</span><span class="keyword">const </span>VideoStreamInfo&<span class="keyword">></span>(info));</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (video_info_->trick_play_factor() > 0) {</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> Status(error::TRICK_PLAY_ERROR,</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="stringliteral">"This stream is already a trick play stream."</span>);</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  </div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  video_info_->set_trick_play_factor(factor_);</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  video_info_->set_playback_rate(0);</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>  <span class="comment">// Add video info to the message queue so that it can be sent out with all</span></div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// other messages. It won't be sent until the second trick play frame comes</span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// through. Until then, it can be updated via the |video_info_| member.</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  delayed_messages_.push_back(</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  StreamData::FromStreamInfo(kStreamIndexOut, video_info_));</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"> 93</span>  <span class="keywordflow">return</span> Status::OK;</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>  </div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> Status TrickPlayHandler::OnSegmentInfo(</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  std::shared_ptr<const SegmentInfo> info) {</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">if</span> (delayed_messages_.empty()) {</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> Status(error::TRICK_PLAY_ERROR,</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="stringliteral">"Cannot handle segments with no preceding samples."</span>);</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  }</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  </div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// Trick play does not care about sub segments, only full segments matter.</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (info->is_subsegment) {</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  </div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">const</span> StreamDataType previous_type =</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  delayed_messages_.back()->stream_data_type;</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">switch</span> (previous_type) {</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">case</span> StreamDataType::kSegmentInfo:</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">// In the case that there was an empty segment (no trick frame between in</span></div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="comment">// a segment) extend the previous segment to include the empty segment to</span></div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="comment">// avoid holes.</span></div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  previous_segment_->duration += info->duration;</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">case</span> StreamDataType::kMediaSample:</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">// The segment has ended and there are media samples in the segment.</span></div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// Add the segment info to the list of delayed messages. Segment info will</span></div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// not get sent downstream until the next trick play frame comes through</span></div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="comment">// or flush is called.</span></div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  previous_segment_ = std::make_shared<SegmentInfo>(*info);</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  delayed_messages_.push_back(</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  StreamData::FromSegmentInfo(kStreamIndexOut, previous_segment_));</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">default</span>:</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">return</span> Status(error::TRICK_PLAY_ERROR,</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="stringliteral">"Unexpected sample in trick play deferred queue : type="</span> +</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  std::to_string(<span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(previous_type)));</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> }</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  </div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> Status TrickPlayHandler::OnMediaSample(<span class="keyword">const</span> MediaSample& sample) {</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  total_frames_++;</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  </div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">if</span> (sample.is_key_frame()) {</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  total_key_frames_++;</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  </div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">if</span> ((total_key_frames_ - 1) % factor_ == 0) {</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">return</span> OnTrickFrame(sample);</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  }</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  }</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">// If the frame is not a trick play frame, then take the duration of this</span></div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="comment">// frame and add it to the previous trick play frame so that it will span the</span></div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// gap created by not passing this frame through.</span></div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  DCHECK(previous_trick_frame_);</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  previous_trick_frame_->set_duration(previous_trick_frame_->duration() +</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  sample.duration());</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  </div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> }</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  </div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> Status TrickPlayHandler::OnTrickFrame(<span class="keyword">const</span> MediaSample& sample) {</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  total_trick_frames_++;</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">// Make a message we can store until later.</span></div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  previous_trick_frame_ = sample.Clone();</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  </div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="comment">// Add the message to our queue so that it will be ready to go out.</span></div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  delayed_messages_.push_back(</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  StreamData::FromMediaSample(kStreamIndexOut, previous_trick_frame_));</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// We need two trick play frames before we can send out our stream info, so we</span></div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="comment">// cannot send this media sample until after we send our sample info</span></div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// downstream.</span></div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">if</span> (total_trick_frames_ < 2) {</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="comment">// Update this now as it may be sent out soon via the delay message queue.</span></div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">if</span> (total_trick_frames_ == 2) {</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// At this point, video_info will be at the head of the delay message queue</span></div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// and can still be updated safely.</span></div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  </div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="comment">// The play back rate is determined by the number of frames between the</span></div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// first two trick play frames. The first trick play frame will be the</span></div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="comment">// first frame in the video.</span></div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  video_info_->set_playback_rate(total_frames_ - 1);</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  </div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="comment">// Send out all delayed messages up until the new trick play frame we just</span></div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// added.</span></div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  Status s;</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">while</span> (s.ok() && delayed_messages_.size() > 1) {</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  s.Update(<a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#afe98a4fd19eabe0fc78afc91959c34a6">Dispatch</a>(std::move(delayed_messages_.front())));</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  delayed_messages_.pop_front();</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">return</span> s;</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> }</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  </div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> } <span class="comment">// namespace shaka</span></div>
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</div><!-- fragment --></div><!-- contents -->
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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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<div class="ttc" id="aclassshaka_1_1media_1_1MediaHandler_html_afe98a4fd19eabe0fc78afc91959c34a6"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#afe98a4fd19eabe0fc78afc91959c34a6">shaka::media::MediaHandler::Dispatch</a></div><div class="ttdeci">Status Dispatch(std::unique_ptr< StreamData > stream_data) const</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00094">media_handler.cc:94</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1MediaHandler_html_ab644ca7b0a0dbcbc42936f2dfb979ca5"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#ab644ca7b0a0dbcbc42936f2dfb979ca5">shaka::media::MediaHandler::FlushAllDownstreams</a></div><div class="ttdeci">Status FlushAllDownstreams()</div><div class="ttdoc">Flush all connected downstream handlers.</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00114">media_handler.cc:114</a></div></div>
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