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<div class="title">es_parser_h264.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 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">#include "packager/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> </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include <stdint.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/media_sample.h"</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/media/base/timestamp.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/media/base/video_stream_info.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/media/codecs/avc_decoder_configuration_record.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/media/codecs/h264_byte_to_unit_stream_converter.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/codecs/h264_parser.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/mp2t_common.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>shaka {</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> <span class="keyword">namespace </span>mp2t {</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> EsParserH264::EsParserH264(uint32_t pid,</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keyword">const</span> NewStreamInfoCB& new_stream_info_cb,</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keyword">const</span> EmitSampleCB& emit_sample_cb)</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  : EsParserH26x(Nalu::kH264,</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  std::unique_ptr<H26xByteToUnitStreamConverter>(</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  new H264ByteToUnitStreamConverter()),</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  pid,</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  emit_sample_cb),</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  new_stream_info_cb_(new_stream_info_cb),</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  decoder_config_check_pending_(false),</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  h264_parser_(new H264Parser()) {}</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> EsParserH264::~EsParserH264() {}</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"> 36</span> <span class="keywordtype">void</span> EsParserH264::Reset() {</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  DVLOG(1) << <span class="stringliteral">"EsParserH264::Reset"</span>;</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  h264_parser_.reset(<span class="keyword">new</span> H264Parser());</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  last_video_decoder_config_ = std::shared_ptr<StreamInfo>();</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  decoder_config_check_pending_ = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  EsParserH26x::Reset();</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> }</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keywordtype">bool</span> EsParserH264::ProcessNalu(<span class="keyword">const</span> Nalu& nalu,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  VideoSliceInfo* video_slice_info) {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  video_slice_info->valid = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">switch</span> (nalu.type()) {</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">case</span> Nalu::H264_AUD: {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  DVLOG(LOG_LEVEL_ES) << <span class="stringliteral">"Nalu: AUD"</span>;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">case</span> Nalu::H264_SPS: {</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  DVLOG(LOG_LEVEL_ES) << <span class="stringliteral">"Nalu: SPS"</span>;</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordtype">int</span> sps_id;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> (h264_parser_->ParseSps(nalu, &sps_id) != H264Parser::kOk)</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  decoder_config_check_pending_ = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">break</span>;</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>  <span class="keywordflow">case</span> Nalu::H264_PPS: {</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  DVLOG(LOG_LEVEL_ES) << <span class="stringliteral">"Nalu: PPS"</span>;</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">int</span> pps_id;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (h264_parser_->ParsePps(nalu, &pps_id) != H264Parser::kOk) {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// Allow PPS parsing to fail if waiting for SPS.</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (last_video_decoder_config_)</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  decoder_config_check_pending_ = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">case</span> Nalu::H264_IDRSlice:</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">case</span> Nalu::H264_NonIDRSlice: {</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_key_frame = (nalu.type() == Nalu::H264_IDRSlice);</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  DVLOG(LOG_LEVEL_ES) << <span class="stringliteral">"Nalu: slice IDR="</span> << is_key_frame;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  H264SliceHeader shdr;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">if</span> (h264_parser_->ParseSliceHeader(nalu, &shdr) != H264Parser::kOk) {</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// Only accept an invalid SPS/PPS at the beginning when the stream</span></div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="comment">// does not necessarily start with an SPS/PPS/IDR.</span></div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">if</span> (last_video_decoder_config_)</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  video_slice_info->valid = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  video_slice_info->is_key_frame = is_key_frame;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  video_slice_info->frame_num = shdr.frame_num;</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  video_slice_info->pps_id = shdr.pic_parameter_set_id;</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="keywordflow">break</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>  <span class="keywordflow">default</span>: {</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  DVLOG(LOG_LEVEL_ES) << <span class="stringliteral">"Nalu: "</span> << nalu.type();</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  }</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  }</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> }</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="keywordtype">bool</span> EsParserH264::UpdateVideoDecoderConfig(<span class="keywordtype">int</span> pps_id) {</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// Update the video decoder configuration if needed.</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">if</span> (!decoder_config_check_pending_)</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">return</span> <span class="keyword">true</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="keyword">const</span> H264Pps* pps = h264_parser_->GetPps(pps_id);</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">const</span> H264Sps* sps;</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (!pps) {</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// Only accept an invalid PPS at the beginning when the stream</span></div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// does not necessarily start with an SPS/PPS/IDR.</span></div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// In this case, the initial frames are conveyed to the upper layer with</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// an invalid VideoDecoderConfig and it's up to the upper layer</span></div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// to process this kind of frame accordingly.</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> last_video_decoder_config_ == <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  sps = h264_parser_->GetSps(pps->seq_parameter_set_id);</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> (!sps)</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  decoder_config_check_pending_ = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  std::vector<uint8_t> decoder_config_record;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">if</span> (!stream_converter()->GetDecoderConfigurationRecord(</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  &decoder_config_record)) {</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  DLOG(ERROR) << <span class="stringliteral">"Failure to construct an AVCDecoderConfigurationRecord"</span>;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">return</span> <span class="keyword">false</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> </div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span> (last_video_decoder_config_) {</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">if</span> (last_video_decoder_config_->codec_config() != decoder_config_record) {</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// Video configuration has changed. Issue warning.</span></div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="comment">// TODO(tinskip): Check the nature of the configuration change. Only</span></div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="comment">// minor configuration changes (such as frame ordering) can be handled</span></div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">// gracefully by decoders without notification. Major changes (such as</span></div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// video resolution changes) should be treated as errors.</span></div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  LOG(WARNING) << <span class="stringliteral">"H.264 decoder configuration has changed."</span>;</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  last_video_decoder_config_->set_codec_config(decoder_config_record);</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  uint32_t coded_width = 0;</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  uint32_t coded_height = 0;</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  uint32_t pixel_width = 0;</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  uint32_t pixel_height = 0;</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">if</span> (!ExtractResolutionFromSps(*sps, &coded_width, &coded_height, &pixel_width,</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  &pixel_height)) {</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  LOG(ERROR) << <span class="stringliteral">"Failed to parse SPS."</span>;</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  }</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keyword">const</span> uint8_t nalu_length_size =</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  H26xByteToUnitStreamConverter::kUnitStreamNaluLengthSize;</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">const</span> H26xStreamFormat stream_format = stream_converter()->stream_format();</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keyword">const</span> FourCC codec_fourcc =</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  stream_format == H26xStreamFormat::kNalUnitStreamWithParameterSetNalus</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  ? FOURCC_avc3</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  : FOURCC_avc1;</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  last_video_decoder_config_ = std::make_shared<VideoStreamInfo>(</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  pid(), kMpeg2Timescale, kInfiniteDuration, kCodecH264, stream_format,</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <a class="code" href="../../d6/d57/classshaka_1_1media_1_1AVCDecoderConfigurationRecord.html#a66b23ef2de8b851482628fefafafce17">AVCDecoderConfigurationRecord::GetCodecString</a>(</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  codec_fourcc, decoder_config_record[1], decoder_config_record[2],</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  decoder_config_record[3]),</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  decoder_config_record.data(), decoder_config_record.size(), coded_width,</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  coded_height, pixel_width, pixel_height, 0, nalu_length_size,</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  std::string(), <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  DVLOG(1) << <span class="stringliteral">"Profile IDC: "</span> << sps->profile_idc;</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  DVLOG(1) << <span class="stringliteral">"Level IDC: "</span> << sps->level_idc;</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  DVLOG(1) << <span class="stringliteral">"log2_max_frame_num_minus4: "</span> << sps->log2_max_frame_num_minus4;</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// Video config notification.</span></div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  new_stream_info_cb_.Run(last_video_decoder_config_);</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> }</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> } <span class="comment">// namespace mp2t</span></div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> } <span class="comment">// namespace shaka</span></div>
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<div class="ttc" id="classshaka_1_1media_1_1AVCDecoderConfigurationRecord_html_a66b23ef2de8b851482628fefafafce17"><div class="ttname"><a href="../../d6/d57/classshaka_1_1media_1_1AVCDecoderConfigurationRecord.html#a66b23ef2de8b851482628fefafafce17">shaka::media::AVCDecoderConfigurationRecord::GetCodecString</a></div><div class="ttdeci">std::string GetCodecString(FourCC codec_fourcc) const </div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d72/avc__decoder__configuration__record_8cc_source.html#l00091">avc_decoder_configuration_record.cc:91</a></div></div>
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