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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="title">chunking_handler.h</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">#ifndef PACKAGER_MEDIA_CHUNKING_CHUNKING_HANDLER_</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#define PACKAGER_MEDIA_CHUNKING_CHUNKING_HANDLER_</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <atomic></span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <queue></span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/base/optional.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/media/base/media_handler.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "packager/media/public/chunking_params.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</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="l00019"></a><span class="lineno"> 19</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  </div>
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<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html"> 39</a></span> <span class="keyword">class </span><a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html">ChunkingHandler</a> : <span class="keyword">public</span> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html">MediaHandler</a> {</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keyword">explicit</span> <a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html">ChunkingHandler</a>(<span class="keyword">const</span> <a class="code" href="../../d2/d1f/structshaka_1_1ChunkingParams.html">ChunkingParams</a>& chunking_params);</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  ~<a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html">ChunkingHandler</a>() <span class="keyword">override</span> = <span class="keywordflow">default</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"> 44</span>  <span class="keyword">protected</span>:</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> <a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html#a76a5f4b74da3876cc72f44301c389ebd">InitializeInternal</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> <a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html#a44c30ffd7c283be2ba4347bda7848633">Process</a>(std::unique_ptr<StreamData> stream_data) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> <a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html#ab526bd53e4d49d7209f01d9b10b9ab52">OnFlushRequest</a>(<span class="keywordtype">size_t</span> input_stream_index) <span class="keyword">override</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>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">friend</span> <span class="keyword">class </span>ChunkingHandlerTest;</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html">ChunkingHandler</a>(<span class="keyword">const</span> <a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html">ChunkingHandler</a>&) = <span class="keyword">delete</span>;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html">ChunkingHandler</a>& operator=(<span class="keyword">const</span> <a class="code" href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html">ChunkingHandler</a>&) = <span class="keyword">delete</span>;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> OnStreamInfo(std::shared_ptr<const StreamInfo> info);</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> OnCueEvent(std::shared_ptr<const CueEvent> event);</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> OnMediaSample(std::shared_ptr<const MediaSample> sample);</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>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> EndSegmentIfStarted() <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> EndSubsegmentIfStarted() <span class="keyword">const</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="keywordtype">bool</span> IsSubsegmentEnabled() {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> subsegment_duration_ > 0 &&</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  subsegment_duration_ != segment_duration_;</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">const</span> <a class="code" href="../../d2/d1f/structshaka_1_1ChunkingParams.html">ChunkingParams</a> chunking_params_;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  </div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// Segment and subsegment duration in stream's time scale.</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  int64_t segment_duration_ = 0;</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  int64_t subsegment_duration_ = 0;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  </div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// Current segment index, useful to determine where to do chunking.</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  int64_t current_segment_index_ = -1;</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// Current subsegment index, useful to determine where to do chunking.</span></div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  int64_t current_subsegment_index_ = -1;</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>  base::Optional<int64_t> segment_start_time_;</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  base::Optional<int64_t> subsegment_start_time_;</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  int64_t max_segment_time_ = 0;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  uint32_t time_scale_ = 0;</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"> 86</span>  <span class="comment">// The offset is applied to sample timestamps so a full segment is generated</span></div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">// after cue points.</span></div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  int64_t cue_offset_ = 0;</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> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> } <span class="comment">// namespace shaka</span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="preprocessor">#endif </span><span class="comment">// PACKAGER_MEDIA_CHUNKING_CHUNKING_HANDLER_</span></div>
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<div class="ttc" id="aclassshaka_1_1Status_html"><div class="ttname"><a href="../../d2/d20/classshaka_1_1Status.html">shaka::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00110">status.h:110</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1ChunkingHandler_html"><div class="ttname"><a href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html">shaka::media::ChunkingHandler</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d79/chunking__handler_8h_source.html#l00039">chunking_handler.h:39</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1ChunkingHandler_html_a44c30ffd7c283be2ba4347bda7848633"><div class="ttname"><a href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html#a44c30ffd7c283be2ba4347bda7848633">shaka::media::ChunkingHandler::Process</a></div><div class="ttdeci">Status Process(std::unique_ptr< StreamData > stream_data) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d12/chunking__handler_8cc_source.html#l00044">chunking_handler.cc:44</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1ChunkingHandler_html_a76a5f4b74da3876cc72f44301c389ebd"><div class="ttname"><a href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html#a76a5f4b74da3876cc72f44301c389ebd">shaka::media::ChunkingHandler::InitializeInternal</a></div><div class="ttdeci">Status InitializeInternal() override</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d12/chunking__handler_8cc_source.html#l00036">chunking_handler.cc:36</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1ChunkingHandler_html_ab526bd53e4d49d7209f01d9b10b9ab52"><div class="ttname"><a href="../../d4/d43/classshaka_1_1media_1_1ChunkingHandler.html#ab526bd53e4d49d7209f01d9b10b9ab52">shaka::media::ChunkingHandler::OnFlushRequest</a></div><div class="ttdeci">Status OnFlushRequest(size_t input_stream_index) override</div><div class="ttdoc">Event handler for flush request at the specific input stream index.</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d12/chunking__handler_8cc_source.html#l00062">chunking_handler.cc:62</a></div></div>
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<div class="ttc" id="aclassshaka_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="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="astructshaka_1_1ChunkingParams_html"><div class="ttname"><a href="../../d2/d1f/structshaka_1_1ChunkingParams.html">shaka::ChunkingParams</a></div><div class="ttdoc">Chunking (segmentation) related parameters.</div><div class="ttdef"><b>Definition:</b> <a href="../../db/d79/chunking__params_8h_source.html#l00013">chunking_params.h:13</a></div></div>
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