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<div class="title">es_parser_h264.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 2014 The Chromium Authors. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Use of this source code is governed by a BSD-style license that can be</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// found in the LICENSE file.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#ifndef MEDIA_FORMATS_MP2T_ES_PARSER_H264_H_</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor"></span><span class="preprocessor">#define MEDIA_FORMATS_MP2T_ES_PARSER_H264_H_</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <stdint.h></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 <list></span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <utility></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/callback.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/compiler_specific.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/base/memory/scoped_ptr.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/formats/mp2t/es_parser.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>edash_packager {</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="l00021"></a><span class="lineno"> 21</span> <span class="keyword">class </span>H264ByteToUnitStreamConverter;</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">class </span>H264Parser;</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">class </span>OffsetByteQueue;</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">struct </span>H264SPS;</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">namespace </span>mp2t {</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="comment">// Remark:</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// In this h264 parser, frame splitting is based on AUD nals.</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// Mpeg2 TS spec: "2.14 Carriage of Rec. ITU-T H.264 | ISO/IEC 14496-10 video"</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// "Each AVC access unit shall contain an access unit delimiter NAL Unit;"</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="../../dd/d0e/classedash__packager_1_1media_1_1mp2t_1_1EsParserH264.html"> 33</a></span> <span class="keyword">class </span><a class="code" href="../../dd/d0e/classedash__packager_1_1media_1_1mp2t_1_1EsParserH264.html">EsParserH264</a> : <span class="keyword">public</span> <a class="code" href="../../db/df2/classedash__packager_1_1media_1_1mp2t_1_1EsParser.html">EsParser</a> {</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <a class="code" href="../../dd/d0e/classedash__packager_1_1media_1_1mp2t_1_1EsParserH264.html">EsParserH264</a>(uint32_t pid,</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">const</span> NewStreamInfoCB& new_stream_info_cb,</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">const</span> EmitSampleCB& emit_sample_cb);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  ~<a class="code" href="../../dd/d0e/classedash__packager_1_1media_1_1mp2t_1_1EsParserH264.html">EsParserH264</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// EsParser implementation overrides.</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordtype">bool</span> Parse(<span class="keyword">const</span> uint8_t* buf, <span class="keywordtype">int</span> size, int64_t pts, int64_t dts) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordtype">void</span> Flush() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordtype">void</span> Reset() <span class="keyword">override</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="keyword">private</span>:</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">struct </span>TimingDesc {</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  int64_t dts;</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  int64_t pts;</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  };</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>  <span class="comment">// Find the AUD located at or after |*stream_pos|.</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// Return true if an AUD is found.</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// If found, |*stream_pos| corresponds to the position of the AUD start code</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// in the stream. Otherwise, |*stream_pos| corresponds to the last position</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">// of the start code parser.</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">bool</span> FindAUD(int64_t* stream_pos);</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>  <span class="comment">// Resumes the H264 ES parsing.</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="comment">// Return true if successful.</span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordtype">bool</span> ParseInternal();</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>  <span class="comment">// Emit a frame whose position in the ES queue starts at |access_unit_pos|.</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// Returns true if successful, false if no PTS is available for the frame.</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">bool</span> EmitFrame(int64_t access_unit_pos,</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">int</span> access_unit_size,</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordtype">bool</span> is_key_frame,</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">int</span> pps_id);</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>  <span class="comment">// Update the video decoder config based on an H264 SPS.</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// Return true if successful.</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordtype">bool</span> UpdateVideoDecoderConfig(<span class="keyword">const</span> <a class="code" href="../../d8/db0/structedash__packager_1_1media_1_1H264SPS.html">H264SPS</a>* sps);</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>  <span class="comment">// Callbacks to pass the stream configuration and the frames.</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  NewStreamInfoCB new_stream_info_cb_;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  EmitSampleCB emit_sample_cb_;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// Bytes of the ES stream that have not been emitted yet.</span></div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  scoped_ptr<media::OffsetByteQueue> es_queue_;</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  std::list<std::pair<int64_t, TimingDesc> > timing_desc_list_;</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>  <span class="comment">// H264 parser state.</span></div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="comment">// - |current_access_unit_pos_| is pointing to an annexB syncword</span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// representing the first NALU of an H264 access unit.</span></div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  scoped_ptr<H264Parser> h264_parser_;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  int64_t current_access_unit_pos_;</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  int64_t next_access_unit_pos_;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// Filter to convert H.264 Annex B byte stream to unit stream.</span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  scoped_ptr<H264ByteToUnitStreamConverter> stream_converter_;</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">// Last video decoder config.</span></div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  scoped_refptr<StreamInfo> last_video_decoder_config_;</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">bool</span> decoder_config_check_pending_;</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// Frame for which we do not yet have a duration.</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  scoped_refptr<MediaSample> pending_sample_;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  uint64_t pending_sample_duration_;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// Indicates whether waiting for first key frame.</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordtype">bool</span> waiting_for_key_frame_;</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">// namespace mp2t</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> } <span class="comment">// namespace edash_packager</span></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> <span class="preprocessor">#endif</span></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp2t_1_1EsParser_html"><div class="ttname"><a href="../../db/df2/classedash__packager_1_1media_1_1mp2t_1_1EsParser.html">edash_packager::media::mp2t::EsParser</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d2/deb/es__parser_8h_source.html#l00021">es_parser.h:21</a></div></div>
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<div class="ttc" id="structedash__packager_1_1media_1_1H264SPS_html"><div class="ttname"><a href="../../d8/db0/structedash__packager_1_1media_1_1H264SPS.html">edash_packager::media::H264SPS</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d9b/h264__parser_8h_source.html#l00062">h264_parser.h:62</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp2t_1_1EsParserH264_html"><div class="ttname"><a href="../../dd/d0e/classedash__packager_1_1media_1_1mp2t_1_1EsParserH264.html">edash_packager::media::mp2t::EsParserH264</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d37/es__parser__h264_8h_source.html#l00033">es_parser_h264.h:33</a></div></div>
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Generated on Fri Jan 15 2016 20:24:16 for DASH Media Packaging SDK by  <a href="http://www.doxygen.org/index.html">
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</a> 1.8.6
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