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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_64597db6ac7a9160e951a4226a03f10e.html">codecs</a></li> </ul>
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<div class="title">nalu_reader.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 2016 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_CODECS_NALU_READER_H_</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#define PACKAGER_MEDIA_CODECS_NALU_READER_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 <stdint.h></span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <stdlib.h></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/compiler_specific.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/macros.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/decrypt_config.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</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="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// Used as the |nalu_length_size| argument to NaluReader to indicate to use</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// AnnexB byte streams. An AnnexB byte stream starts with 3 or 4 byte start</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// codes instead of a fixed size NAL unit length.</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">const</span> uint8_t kIsAnnexbByteStream = 0;</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div>
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<div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html"> 27</a></span> <span class="keyword">class </span><a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html">Nalu</a> {</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keyword">enum</span> H264NaluType {</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  H264_Unspecified = 0,</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  H264_NonIDRSlice = 1,</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  H264_IDRSlice = 5,</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  H264_SEIMessage = 6,</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  H264_SPS = 7,</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  H264_PPS = 8,</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  H264_AUD = 9,</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  H264_EOSeq = 10,</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  H264_FillerData = 12,</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  H264_SPSExtension = 13,</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  H264_PrefixNALUnit = 14,</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  H264_SubsetSPS = 15,</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  H264_DepthParameterSet = 16,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  H264_Reserved17 = 17,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  H264_Reserved18 = 18,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  H264_CodedSliceExtension = 20,</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  H264_Reserved22 = 22,</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  };</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">enum</span> H265NaluType {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  H265_TRAIL_N = 0,</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  H265_TRAIL_R = 1,</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  H265_TSA_N = 2,</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  H265_TSA_R = 3,</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  H265_STSA_N = 4,</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  H265_STSA_R = 5,</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  H265_RASL_R = 9,</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  H265_RSV_VCL_N10 = 10,</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  H265_RSV_VCL_R15 = 15,</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  </div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  H265_BLA_W_LP = 16,</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  H265_IDR_W_RADL = 19,</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  H265_IDR_N_LP = 20,</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  H265_CRA_NUT = 21,</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>  H265_RSV_IRAP_VCL22 = 22,</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  H265_RSV_IRAP_VCL23 = 23,</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  H265_RSV_VCL31 = 31,</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>  H265_VPS = 32,</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  H265_SPS = 33,</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  H265_PPS = 34,</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  H265_AUD = 35,</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  H265_EOS = 36,</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  H265_EOB = 37,</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  H265_FD = 38,</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>  H265_PREFIX_SEI = 39,</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>  H265_RSV_NVCL41 = 41,</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  H265_RSV_NVCL44 = 44,</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  H265_UNSPEC48 = 48,</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  H265_UNSPEC55 = 55,</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  };</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">enum</span> CodecType {</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  kH264,</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  kH265,</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>  </div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html">Nalu</a>();</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="keywordtype">bool</span> Initialize(CodecType <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a7a3b4358f56619fc63fe74525f4eb92b">type</a>,</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">const</span> uint8_t* <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a52dc6f445a09c36a64c634ccc2891489">data</a>,</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  uint64_t size) WARN_UNUSED_RESULT;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  </div>
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<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a52dc6f445a09c36a64c634ccc2891489"> 97</a></span>  <span class="keyword">const</span> uint8_t* <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a52dc6f445a09c36a64c634ccc2891489">data</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> data_; }</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="l00100"></a><span class="lineno"><a class="line" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a835d8f01a8ab94887ee3dce3b5d3721e"> 100</a></span>  uint64_t <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a835d8f01a8ab94887ee3dce3b5d3721e">header_size</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> header_size_; }</div>
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<div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#abe782e4298e7add8ce0a1c33e66cfcdb"> 102</a></span>  uint64_t <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#abe782e4298e7add8ce0a1c33e66cfcdb">payload_size</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> payload_size_; }</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// H.264 Specific:</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordtype">int</span> ref_idc()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> ref_idc_; }</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="comment">// H.265 Specific:</span></div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordtype">int</span> nuh_layer_id()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> nuh_layer_id_; }</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordtype">int</span> nuh_temporal_id()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> nuh_temporal_id_; }</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
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<div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a7a3b4358f56619fc63fe74525f4eb92b"> 113</a></span>  <span class="keywordtype">int</span> <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a7a3b4358f56619fc63fe74525f4eb92b">type</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> type_; }</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordtype">bool</span> is_aud()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> is_aud_; }</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordtype">bool</span> is_vcl()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> is_vcl_; }</div>
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<div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a63f091b3dbe862fd4519c1b374dfc937"> 117</a></span>  <span class="keywordtype">bool</span> <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a63f091b3dbe862fd4519c1b374dfc937">is_video_slice</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> is_video_slice_; }</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordtype">bool</span> can_start_access_unit()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> can_start_access_unit_; }</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  </div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordtype">bool</span> InitializeFromH264(<span class="keyword">const</span> uint8_t* <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a52dc6f445a09c36a64c634ccc2891489">data</a>, uint64_t size);</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordtype">bool</span> InitializeFromH265(<span class="keyword">const</span> uint8_t* <a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a52dc6f445a09c36a64c634ccc2891489">data</a>, uint64_t size);</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>  <span class="comment">// A pointer to the NALU (i.e. points to the header). This pointer is not</span></div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// owned by this instance.</span></div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">const</span> uint8_t* data_ = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="comment">// NALU header size (e.g. 1 byte for H.264). Note that it does not include</span></div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// header extension data in some NAL units.</span></div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  uint64_t header_size_ = 0;</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="comment">// Size of data after the header.</span></div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  uint64_t payload_size_ = 0;</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  </div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordtype">int</span> ref_idc_ = 0;</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordtype">int</span> nuh_layer_id_ = 0;</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordtype">int</span> nuh_temporal_id_ = 0;</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordtype">int</span> type_ = 0;</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordtype">bool</span> is_aud_ = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordtype">bool</span> is_vcl_ = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordtype">bool</span> is_video_slice_ = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordtype">bool</span> can_start_access_unit_ = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  </div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// Don't use DISALLOW_COPY_AND_ASSIGN since it is just numbers and a pointer</span></div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="comment">// it does not own. This allows Nalus to be stored in a vector.</span></div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> };</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  </div>
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<div class="line"><a name="l00149"></a><span class="lineno"><a class="line" href="../../db/d86/classshaka_1_1media_1_1NaluReader.html"> 149</a></span> <span class="keyword">class </span><a class="code" href="../../db/d86/classshaka_1_1media_1_1NaluReader.html">NaluReader</a> {</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">enum</span> Result {</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  kOk,</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  kInvalidStream, <span class="comment">// error in stream</span></div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  kEOStream, <span class="comment">// end of stream</span></div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  };</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  </div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <a class="code" href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#a2d1611fe3e60fc6570fe0c21e13911b0">NaluReader</a>(Nalu::CodecType type,</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  uint8_t nal_length_size,</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">const</span> uint8_t* stream,</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  uint64_t stream_size);</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  </div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <a class="code" href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#a2d1611fe3e60fc6570fe0c21e13911b0">NaluReader</a>(Nalu::CodecType type,</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  uint8_t nal_length_size,</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">const</span> uint8_t* stream,</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  uint64_t stream_size,</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keyword">const</span> std::vector<SubsampleEntry>& subsamples);</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  ~<a class="code" href="../../db/d86/classshaka_1_1media_1_1NaluReader.html">NaluReader</a>();</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  </div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// Find offset from start of data to next NALU start code</span></div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="comment">// and size of found start code (3 or 4 bytes).</span></div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="comment">// If no start code is found, offset is pointing to the first unprocessed byte</span></div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// (i.e. the first byte that was not considered as a possible start of a start</span></div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="comment">// code) and |*start_code_size| is set to 0.</span></div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">// Postconditions:</span></div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="comment">// - |*offset| is between 0 and |data_size| included.</span></div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="comment">// It is strictly less than |data_size| if |data_size| > 0.</span></div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">// - |*start_code_size| is either 0, 3 or 4.</span></div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> FindStartCode(<span class="keyword">const</span> uint8_t* data,</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  uint64_t data_size,</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  uint64_t* offset,</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  uint8_t* start_code_size);</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  </div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#aa14b3cd5da5657d8a3d0ecfdf301a184">FindStartCodeInClearRange</a>(</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keyword">const</span> uint8_t* data,</div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  uint64_t data_size,</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  uint64_t* offset,</div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  uint8_t* start_code_size,</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">const</span> std::vector<SubsampleEntry>& subsamples);</div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  </div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  Result <a class="code" href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#ae051f1f92d84acfcd4cc159d972d647a">Advance</a>(<a class="code" href="../../d6/dff/classshaka_1_1media_1_1Nalu.html">Nalu</a>* nalu);</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  </div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordtype">bool</span> <a class="code" href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#a9ed9d56a06f43717cdb7035f86075975">StartsWithStartCode</a>();</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  </div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keyword">enum</span> Format {</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  kAnnexbByteStreamFormat,</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  kNalUnitStreamFormat</div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  };</div>
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  </div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// Move the stream pointer to the beginning of the next NALU,</span></div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">// i.e. pointing at the next start code.</span></div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="comment">// Return true if a NALU has been found.</span></div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="comment">// If a NALU is found:</span></div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="comment">// - its size in bytes is returned in |*nalu_size| and includes</span></div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="comment">// the start code as well as the trailing zero bits.</span></div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// - the size in bytes of the start code is returned in |*start_code_size|.</span></div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordtype">bool</span> LocateNaluByStartCode(uint64_t* nalu_size, uint8_t* start_code_size);</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  </div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// Pointer to the current NALU in the stream.</span></div>
|
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keyword">const</span> uint8_t* stream_;</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">// The remaining size of the stream.</span></div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  uint64_t stream_size_;</div>
|
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="comment">// The type of NALU being read.</span></div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  Nalu::CodecType nalu_type_;</div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="comment">// The number of bytes the prefix length is; only valid if format is</span></div>
|
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// kAnnexbByteStreamFormat.</span></div>
|
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  uint8_t nalu_length_size_;</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="comment">// The format of the stream.</span></div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  Format format_;</div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  </div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="comment">// subsamples left in stream_.</span></div>
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|
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  std::vector<SubsampleEntry> subsamples_;</div>
|
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  </div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../db/d86/classshaka_1_1media_1_1NaluReader.html">NaluReader</a>);</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> };</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  </div>
|
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> } <span class="comment">// namespace shaka</span></div>
|
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  </div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="preprocessor">#endif </span><span class="comment">// PACKAGER_MEDIA_CODECS_NALU_READER_H_</span></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1NaluReader_html"><div class="ttname"><a href="../../db/d86/classshaka_1_1media_1_1NaluReader.html">shaka::media::NaluReader</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00149">nalu_reader.h:149</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1NaluReader_html_a2d1611fe3e60fc6570fe0c21e13911b0"><div class="ttname"><a href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#a2d1611fe3e60fc6570fe0c21e13911b0">shaka::media::NaluReader::NaluReader</a></div><div class="ttdeci">NaluReader(Nalu::CodecType type, uint8_t nal_length_size, const uint8_t *stream, uint64_t stream_size)</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df5/nalu__reader_8cc_source.html#l00214">nalu_reader.cc:214</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1NaluReader_html_a9ed9d56a06f43717cdb7035f86075975"><div class="ttname"><a href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#a9ed9d56a06f43717cdb7035f86075975">shaka::media::NaluReader::StartsWithStartCode</a></div><div class="ttdeci">bool StartsWithStartCode()</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df5/nalu__reader_8cc_source.html#l00299">nalu_reader.cc:299</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1NaluReader_html_aa14b3cd5da5657d8a3d0ecfdf301a184"><div class="ttname"><a href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#aa14b3cd5da5657d8a3d0ecfdf301a184">shaka::media::NaluReader::FindStartCodeInClearRange</a></div><div class="ttdeci">static bool FindStartCodeInClearRange(const uint8_t *data, uint64_t data_size, uint64_t *offset, uint8_t *start_code_size, const std::vector< SubsampleEntry > &subsamples)</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df5/nalu__reader_8cc_source.html#l00346">nalu_reader.cc:346</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1NaluReader_html_ae051f1f92d84acfcd4cc159d972d647a"><div class="ttname"><a href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#ae051f1f92d84acfcd4cc159d972d647a">shaka::media::NaluReader::Advance</a></div><div class="ttdeci">Result Advance(Nalu *nalu)</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df5/nalu__reader_8cc_source.html#l00241">nalu_reader.cc:241</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1Nalu_html"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html">shaka::media::Nalu</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00027">nalu_reader.h:27</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1Nalu_html_a52dc6f445a09c36a64c634ccc2891489"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a52dc6f445a09c36a64c634ccc2891489">shaka::media::Nalu::data</a></div><div class="ttdeci">const uint8_t * data() const</div><div class="ttdoc">This is the pointer to the Nalu data, pointing to the header.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00097">nalu_reader.h:97</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1Nalu_html_a63f091b3dbe862fd4519c1b374dfc937"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a63f091b3dbe862fd4519c1b374dfc937">shaka::media::Nalu::is_video_slice</a></div><div class="ttdeci">bool is_video_slice() const</div><div class="ttdoc">Slice data partition NALs are not considered as slice NALs.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00117">nalu_reader.h:117</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1Nalu_html_a7a3b4358f56619fc63fe74525f4eb92b"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a7a3b4358f56619fc63fe74525f4eb92b">shaka::media::Nalu::type</a></div><div class="ttdeci">int type() const</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00113">nalu_reader.h:113</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1Nalu_html_a835d8f01a8ab94887ee3dce3b5d3721e"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a835d8f01a8ab94887ee3dce3b5d3721e">shaka::media::Nalu::header_size</a></div><div class="ttdeci">uint64_t header_size() const</div><div class="ttdoc">The size of the header, e.g. 1 for H.264.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00100">nalu_reader.h:100</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1Nalu_html_abe782e4298e7add8ce0a1c33e66cfcdb"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#abe782e4298e7add8ce0a1c33e66cfcdb">shaka::media::Nalu::payload_size</a></div><div class="ttdeci">uint64_t payload_size() const</div><div class="ttdoc">Size of this Nalu minus header_size().</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00102">nalu_reader.h:102</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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