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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_1338cd99faf71b6cb1609e99e3340e45.html">chunking</a></li> </ul>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2018 Google Inc. All rights reserved.</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div><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><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><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><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#ifndef PACKAGER_MEDIA_CHUNKING_CUE_ALIGNMENT_HANDLER_</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#define PACKAGER_MEDIA_CHUNKING_CUE_ALIGNMENT_HANDLER_</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <list></span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/media/base/media_handler.h"</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/media/chunking/sync_point_queue.h"</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <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> <span class="keyword">namespace </span>media {</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="../../da/dab/classshaka_1_1media_1_1CueAlignmentHandler.html"> 25</a></span> <span class="keyword">class </span><a class="code" href="../../da/dab/classshaka_1_1media_1_1CueAlignmentHandler.html">CueAlignmentHandler</a> : <span class="keyword">public</span> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html">MediaHandler</a> {</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">explicit</span> <a class="code" href="../../da/dab/classshaka_1_1media_1_1CueAlignmentHandler.html">CueAlignmentHandler</a>(<a class="code" href="../../d0/dea/classshaka_1_1media_1_1SyncPointQueue.html">SyncPointQueue</a>* sync_points);</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  ~<a class="code" href="../../da/dab/classshaka_1_1media_1_1CueAlignmentHandler.html">CueAlignmentHandler</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <a class="code" href="../../da/dab/classshaka_1_1media_1_1CueAlignmentHandler.html">CueAlignmentHandler</a>(<span class="keyword">const</span> <a class="code" href="../../da/dab/classshaka_1_1media_1_1CueAlignmentHandler.html">CueAlignmentHandler</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <a class="code" href="../../da/dab/classshaka_1_1media_1_1CueAlignmentHandler.html">CueAlignmentHandler</a>& operator=(<span class="keyword">const</span> <a class="code" href="../../da/dab/classshaka_1_1media_1_1CueAlignmentHandler.html">CueAlignmentHandler</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">struct </span>StreamState {</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">// Information for the stream.</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  std::shared_ptr<const StreamInfo> info;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="comment">// Cached samples that cannot be dispatched. All the samples should be at or</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="comment">// after |hint|.</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  std::list<std::unique_ptr<StreamData>> samples;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// If set, the stream is pending to be flushed.</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordtype">bool</span> to_be_flushed = <span class="keyword">false</span>;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// A list of cues that the stream should inject between media samples. When</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// there are no cues, the stream should run up to the hint.</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  std::list<std::unique_ptr<StreamData>> cues;</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  };</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="comment">// MediaHandler overrides.</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> InitializeInternal() <span class="keyword">override</span>;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> Process(std::unique_ptr<StreamData> data) <span class="keyword">override</span>;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> OnFlushRequest(<span class="keywordtype">size_t</span> stream_index) <span class="keyword">override</span>;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// Internal handling functions for different stream data.</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> OnStreamInfo(std::unique_ptr<StreamData> data);</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> OnVideoSample(std::unique_ptr<StreamData> sample);</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> OnNonVideoSample(std::unique_ptr<StreamData> sample);</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> OnSample(std::unique_ptr<StreamData> sample);</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="comment">// Update stream states with new sync point.</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> UseNewSyncPoint(std::shared_ptr<const CueEvent> new_sync);</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// Check if everyone is waiting for new hint points.</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">bool</span> EveryoneWaitingAtHint() <span class="keyword">const</span>;</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// Dispatch or save incoming sample.</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> AcceptSample(std::unique_ptr<StreamData> sample,</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  StreamState* stream_state);</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// Dispatch all samples and cues (in the correct order) for the given stream.</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> RunThroughSamples(StreamState* stream);</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="../../d0/dea/classshaka_1_1media_1_1SyncPointQueue.html">SyncPointQueue</a>* <span class="keyword">const</span> sync_points_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  std::vector<StreamState> stream_states_;</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// A common hint used by all streams. When a new cue is given to all streams,</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// the hint will be updated. The hint will always be larger than any cue. The</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// hint represents the min time in seconds for the next cue appear. The hints</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="comment">// are based off the un-promoted cue event times in |sync_points_|.</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">//</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// When a video stream passes the hint, it will promote the corresponding cue</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="comment">// event. If all streams get to the hint and there are no video streams, the</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// thread will block until |sync_points_| gives back a promoted cue event.</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">double</span> hint_;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> };</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> } <span class="comment">// namespace media</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> } <span class="comment">// namespace shaka</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#endif // PACKAGER_MEDIA_CHUNKING_CUE_ALIGNMENT_HANDLER_</span></div><div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html">shaka::media::MediaHandler</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d93/media__handler_8h_source.html#l00154">media_handler.h:154</a></div></div>
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<div class="ttc" id="namespaceshaka_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="classshaka_1_1media_1_1CueAlignmentHandler_html"><div class="ttname"><a href="../../da/dab/classshaka_1_1media_1_1CueAlignmentHandler.html">shaka::media::CueAlignmentHandler</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d20/cue__alignment__handler_8h_source.html#l00025">cue_alignment_handler.h:25</a></div></div>
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<div class="ttc" id="classshaka_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="classshaka_1_1media_1_1SyncPointQueue_html"><div class="ttname"><a href="../../d0/dea/classshaka_1_1media_1_1SyncPointQueue.html">shaka::media::SyncPointQueue</a></div><div class="ttdoc">A synchronized queue for cue points. </div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d5f/sync__point__queue_8h_source.html#l00020">sync_point_queue.h:20</a></div></div>
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