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<li class="navelem"><a class="el" href="../../dir_39dc0668bd5a501998f94e8b4e546c71.html">media</a></li><li class="navelem"><a class="el" href="../../dir_ebd49ab0652c2e9158bbb57c55382729.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>shaka {</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> <span class="keyword">namespace </span>{</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> kMainStreamIndex = 0;</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> </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> TrickPlayHandler::TrickPlayHandler() {}</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="l00021"></a><span class="lineno"> 21</span> TrickPlayHandler::~TrickPlayHandler() {}</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> <span class="keywordtype">void</span> TrickPlayHandler::SetHandlerForMainStream(</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  std::shared_ptr<MediaHandler> handler) {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0fac1fe2d593e78d47244acdfa21759d">SetHandler</a>(kMainStreamIndex, std::move(handler));</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> <span class="keywordtype">void</span> TrickPlayHandler::SetHandlerForTrickPlay(</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  uint32_t trick_play_factor,</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  std::shared_ptr<MediaHandler> handler) {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  trick_play_factors_.push_back(trick_play_factor);</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="comment">// Trick play streams start from index 1.</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0fac1fe2d593e78d47244acdfa21759d">SetHandler</a>(trick_play_factors_.size(), std::move(handler));</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> }</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"><a class="line" href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a3fd2fae199e0a9607e83e02724896c10"> 36</a></span> Status <a class="code" href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a3fd2fae199e0a9607e83e02724896c10">TrickPlayHandler::InitializeInternal</a>() {</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">if</span> (!HasMainStream()) {</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">return</span> Status(error::TRICK_PLAY_ERROR,</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="stringliteral">"Trick play does not have main stream"</span>);</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  }</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">if</span> (trick_play_factors_.empty()) {</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">return</span> Status(error::TRICK_PLAY_ERROR,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="stringliteral">"Trick play factors are not specified."</span>);</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  }</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordtype">size_t</span> num_trick_play_factors = trick_play_factors_.size();</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  cached_stream_data_.resize(num_trick_play_factors);</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  playback_rates_.resize(num_trick_play_factors, 0);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</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"><a class="line" href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#afdd13bb4e762c4b904ed75b268359757"> 52</a></span> Status <a class="code" href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#afdd13bb4e762c4b904ed75b268359757">TrickPlayHandler::Process</a>(</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  std::unique_ptr<StreamData> input_stream_data) {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// The non-trick play stream is dispatched at index 0.</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">// The trick-play streams are dispatched to index 1, index 2 and so on.</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  DCHECK_EQ(input_stream_data->stream_index, 0u);</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  std::unique_ptr<StreamData> output_stream_data(<span class="keyword">new</span> <a class="code" href="../../d0/d4c/structshaka_1_1media_1_1StreamData.html">StreamData</a>());</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  *output_stream_data = *input_stream_data;</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  Status status = <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#accd62dd4def920571f95f4e1a98ab7ca">Dispatch</a>(std::move(output_stream_data));</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">if</span> (!status.ok()) {</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  }</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>  std::shared_ptr<StreamData> stream_data(std::move(input_stream_data));</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (stream_data->stream_data_type == StreamDataType::kStreamInfo) {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span> (stream_data->stream_info->stream_type() != kStreamVideo) {</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  status.SetError(error::TRICK_PLAY_ERROR,</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="stringliteral">"Trick play does not support non-video stream"</span>);</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  }</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">const</span> <a class="code" href="../../d6/db1/classshaka_1_1media_1_1VideoStreamInfo.html">VideoStreamInfo</a>& video_stream_info =</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">static_cast<</span><span class="keyword">const </span><a class="code" href="../../d6/db1/classshaka_1_1media_1_1VideoStreamInfo.html">VideoStreamInfo</a>&<span class="keyword">></span>(*stream_data->stream_info);</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">if</span> (video_stream_info.trick_play_factor() > 0) {</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  status.SetError(error::TRICK_PLAY_ERROR,</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="stringliteral">"This stream is alreay a trick play stream."</span>);</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> status;</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"> 78</span>  }</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">if</span> (stream_data->stream_data_type == StreamDataType::kSegmentInfo) {</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& cached_data : cached_stream_data_) {</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="comment">// It is possible that trick play stream has large frame duration that</span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// some segments in the main stream are skipped. To avoid empty segments,</span></div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// only cache SegementInfo with MediaSample before it.</span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">if</span> (!cached_data.empty() &&</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  cached_data.back()->stream_data_type == StreamDataType::kMediaSample)</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  cached_data.push_back(stream_data);</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  }</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span> Status::OK;</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> </div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">if</span> (stream_data->stream_data_type != StreamDataType::kMediaSample) {</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// Non media sample stream data needs to be dispatched to every output</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// stream. It is just cached in every queue until a new key frame comes or</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// the stream is flushed.</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < cached_stream_data_.size(); ++i)</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  cached_stream_data_[i].push_back(stream_data);</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</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> (stream_data->media_sample->is_key_frame()) {</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// For a new key frame, some of the trick play streams may include it.</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// The cached data in those trick play streams will be processed.</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  DCHECK_EQ(trick_play_factors_.size(), cached_stream_data_.size());</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < cached_stream_data_.size(); ++i) {</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  uint32_t factor = trick_play_factors_[i];</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">if</span> (total_key_frames_ % factor == 0) {</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// Delay processing cached stream data until receiving the second key</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// frame so that the GOP size could be derived.</span></div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">if</span> (!cached_stream_data_[i].empty() && total_key_frames_ > 0) {</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// Num of frames between first two key frames in the trick play</span></div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// streams. Use this as the playback_rate.</span></div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">if</span> (playback_rates_[i] == 0)</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  playback_rates_[i] = total_frames_;</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  Status status =</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  ProcessCachedStreamData(i + 1, &cached_stream_data_[i]);</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  cached_stream_data_[i].push_back(stream_data);</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  }</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  total_key_frames_++;</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  }</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  total_frames_++;</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  prev_sample_end_timestamp_ =</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  stream_data->media_sample->dts() + stream_data->media_sample->duration();</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">return</span> Status::OK;</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"><a class="line" href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#addbe1be8281bceb8e84df865424dded3"> 135</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#addbe1be8281bceb8e84df865424dded3">TrickPlayHandler::ValidateOutputStreamIndex</a>(<span class="keywordtype">size_t</span> stream_index)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="comment">// Output stream index should be less than the number of trick play</span></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">// streams + one original stream.</span></div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> stream_index <= trick_play_factors_.size();</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> };</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
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<div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a9a6c29c88fdeb667d5592142d6815bfa"> 141</a></span> Status <a class="code" href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a9a6c29c88fdeb667d5592142d6815bfa">TrickPlayHandler::OnFlushRequest</a>(<span class="keywordtype">size_t</span> input_stream_index) {</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  DCHECK_EQ(input_stream_index, 0u)</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  << <span class="stringliteral">"Trick Play Handler should only have single input."</span>;</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < cached_stream_data_.size(); ++i) {</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  LOG_IF(WARNING, playback_rates_[i] == 0)</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  << <span class="stringliteral">"Max playout rate for trick play factor "</span> << trick_play_factors_[i]</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  << <span class="stringliteral">" is not determined. "</span></div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  << <span class="stringliteral">"Specify it as total number of frames: "</span> << total_frames_ << <span class="stringliteral">"."</span>;</div>
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|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  playback_rates_[i] = total_frames_;</div>
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|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  ProcessCachedStreamData(i + 1, &cached_stream_data_[i]);</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  }</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">return</span> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#ab644ca7b0a0dbcbc42936f2dfb979ca5">MediaHandler::FlushAllDownstreams</a>();</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> }</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> <span class="keywordtype">bool</span> TrickPlayHandler::HasMainStream() {</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& handlers = output_handlers();</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& main_stream_handler = handlers.find(kMainStreamIndex);</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span> (main_stream_handler == handlers.end()) {</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div>
|
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">return</span> main_stream_handler->second.first != <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> }</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> Status TrickPlayHandler::ProcessCachedStreamData(</div>
|
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordtype">size_t</span> output_stream_index,</div>
|
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  std::deque<std::shared_ptr<StreamData>>* cached_stream_data) {</div>
|
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">while</span> (!cached_stream_data->empty()) {</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  Status status =</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  ProcessOneStreamData(output_stream_index, cached_stream_data->front());</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">if</span> (!status.ok()) {</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">return</span> status;</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  cached_stream_data->pop_front();</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> }</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> Status TrickPlayHandler::ProcessOneStreamData(</div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordtype">size_t</span> output_stream_index,</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">const</span> std::shared_ptr<StreamData>& stream_data) {</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordtype">size_t</span> trick_play_index = output_stream_index - 1;</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  uint32_t trick_play_factor = trick_play_factors_[trick_play_index];</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  Status status;</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">switch</span> (stream_data->stream_data_type) {</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// trick_play_factor in StreamInfo should be modified.</span></div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">case</span> StreamDataType::kStreamInfo: {</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">const</span> VideoStreamInfo& video_stream_info =</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">static_cast<</span><span class="keyword">const </span>VideoStreamInfo&<span class="keyword">></span>(*stream_data->stream_info);</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  std::shared_ptr<VideoStreamInfo> trick_play_video_stream_info(</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keyword">new</span> VideoStreamInfo(video_stream_info));</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  trick_play_video_stream_info->set_trick_play_factor(trick_play_factor);</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  DCHECK_GT(playback_rates_[trick_play_index], 0u);</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  trick_play_video_stream_info->set_playback_rate(</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  playback_rates_[trick_play_index]);</div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  status =</div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a855263bdfc4c0e24d94277dc4a1b415f">DispatchStreamInfo</a>(output_stream_index, trick_play_video_stream_info);</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  }</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">case</span> StreamDataType::kMediaSample: {</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">if</span> (stream_data->media_sample->is_key_frame()) {</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  std::shared_ptr<MediaSample> trick_play_media_sample =</div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <a class="code" href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html#ad8975dbb21747ff32c8604f5489bf5c9">MediaSample::CopyFrom</a>(*(stream_data->media_sample));</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  trick_play_media_sample->set_duration(prev_sample_end_timestamp_ -</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  stream_data->media_sample->dts());</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  status =</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a73dfbc5de4901830cfd25775e2e4fcff">DispatchMediaSample</a>(output_stream_index, trick_play_media_sample);</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  }</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  }</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">default</span>:</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  std::unique_ptr<StreamData> new_stream_data(<span class="keyword">new</span> StreamData(*stream_data));</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  new_stream_data->stream_index = output_stream_index;</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  status = <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#accd62dd4def920571f95f4e1a98ab7ca">Dispatch</a>(std::move(new_stream_data));</div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  }</div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">return</span> status;</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> }</div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> } <span class="comment">// namespace media</span></div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> } <span class="comment">// namespace shaka</span></div>
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|
<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_a73dfbc5de4901830cfd25775e2e4fcff"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a73dfbc5de4901830cfd25775e2e4fcff">shaka::media::MediaHandler::DispatchMediaSample</a></div><div class="ttdeci">Status DispatchMediaSample(size_t stream_index, std::shared_ptr< MediaSample > media_sample)</div><div class="ttdoc">Dispatch the media sample to downstream handlers. </div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d93/media__handler_8h_source.html#l00137">media_handler.h:137</a></div></div>
|
|
<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_accd62dd4def920571f95f4e1a98ab7ca"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#accd62dd4def920571f95f4e1a98ab7ca">shaka::media::MediaHandler::Dispatch</a></div><div class="ttdeci">Status Dispatch(std::unique_ptr< StreamData > stream_data)</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00052">media_handler.cc:52</a></div></div>
|
|
<div class="ttc" id="structshaka_1_1media_1_1StreamData_html"><div class="ttname"><a href="../../d0/d4c/structshaka_1_1media_1_1StreamData.html">shaka::media::StreamData</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d93/media__handler_8h_source.html#l00047">media_handler.h:47</a></div></div>
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|
<div class="ttc" id="classshaka_1_1media_1_1TrickPlayHandler_html_addbe1be8281bceb8e84df865424dded3"><div class="ttname"><a href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#addbe1be8281bceb8e84df865424dded3">shaka::media::TrickPlayHandler::ValidateOutputStreamIndex</a></div><div class="ttdeci">bool ValidateOutputStreamIndex(size_t stream_index) const override</div><div class="ttdoc">Validate if the stream at the specified index actually exists. </div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d87/trick__play__handler_8cc_source.html#l00135">trick_play_handler.cc:135</a></div></div>
|
|
<div class="ttc" id="classshaka_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 downstreams. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00072">media_handler.cc:72</a></div></div>
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|
<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_a855263bdfc4c0e24d94277dc4a1b415f"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a855263bdfc4c0e24d94277dc4a1b415f">shaka::media::MediaHandler::DispatchStreamInfo</a></div><div class="ttdeci">Status DispatchStreamInfo(size_t stream_index, std::shared_ptr< StreamInfo > stream_info)</div><div class="ttdoc">Dispatch the stream info to downstream handlers. </div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d93/media__handler_8h_source.html#l00127">media_handler.h:127</a></div></div>
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|
<div class="ttc" id="classshaka_1_1media_1_1TrickPlayHandler_html_a9a6c29c88fdeb667d5592142d6815bfa"><div class="ttname"><a href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a9a6c29c88fdeb667d5592142d6815bfa">shaka::media::TrickPlayHandler::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="../../d3/d87/trick__play__handler_8cc_source.html#l00141">trick_play_handler.cc:141</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaSample_html_ad8975dbb21747ff32c8604f5489bf5c9"><div class="ttname"><a href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html#ad8975dbb21747ff32c8604f5489bf5c9">shaka::media::MediaSample::CopyFrom</a></div><div class="ttdeci">static std::shared_ptr< MediaSample > CopyFrom(const uint8_t *data, size_t size, bool is_key_frame)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d0d/media__sample_8cc_source.html#l00045">media_sample.cc:45</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1TrickPlayHandler_html_a3fd2fae199e0a9607e83e02724896c10"><div class="ttname"><a href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a3fd2fae199e0a9607e83e02724896c10">shaka::media::TrickPlayHandler::InitializeInternal</a></div><div class="ttdeci">Status InitializeInternal() override</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d87/trick__play__handler_8cc_source.html#l00036">trick_play_handler.cc:36</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1VideoStreamInfo_html"><div class="ttname"><a href="../../d6/db1/classshaka_1_1media_1_1VideoStreamInfo.html">shaka::media::VideoStreamInfo</a></div><div class="ttdoc">Holds video stream information. </div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d87/video__stream__info_8h_source.html#l00023">video_stream_info.h:23</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_a0fac1fe2d593e78d47244acdfa21759d"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0fac1fe2d593e78d47244acdfa21759d">shaka::media::MediaHandler::SetHandler</a></div><div class="ttdeci">Status SetHandler(size_t output_stream_index, std::shared_ptr< MediaHandler > handler)</div><div class="ttdoc">Connect downstream handler at the specified output stream index. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00012">media_handler.cc:12</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1TrickPlayHandler_html_afdd13bb4e762c4b904ed75b268359757"><div class="ttname"><a href="../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#afdd13bb4e762c4b904ed75b268359757">shaka::media::TrickPlayHandler::Process</a></div><div class="ttdeci">Status Process(std::unique_ptr< StreamData > stream_data) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d87/trick__play__handler_8cc_source.html#l00052">trick_play_handler.cc:52</a></div></div>
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