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<div class="title">mpeg1_header.cc</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#include "packager/media/formats/mp2t/mpeg1_header.h"</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>  </div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#include "packager/media/base/bit_reader.h"</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "packager/media/base/bit_writer.h"</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/mp2t_common.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="comment">// Parsing is done according to</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// https://www.datavoyage.com/mpgscript/mpeghdr.htm</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kMpeg1HeaderMinSize = 4;</div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  </div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="keyword">const</span> uint8_t kMpeg1V_INV = 0b01; <span class="comment">/* Invalid version */</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">const</span> uint8_t kMpeg1L_INV = 0b00; <span class="comment">/* Invalid layer */</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  </div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">const</span> uint8_t kMpeg1L_3 = 0b01;</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">const</span> uint8_t kMpeg1L_2 = 0b10;</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">const</span> uint8_t kMpeg1L_1 = 0b11;</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kMpeg1SamplesPerFrameTable[] = {</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="comment">// L1, L2, L3</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  384, 1152, 1152};</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">const</span> uint32_t kMpeg1SampleRateTable[][3] = {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="comment">// clang-format off</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="comment">// V1, V2, V2.5</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  {44100, 22050, 11025},</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  {48000, 24000, 12000},</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  {32000, 16000, 8000}};</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="comment">// clang-format on</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kMpeg1SampleRateTableSize = arraysize(kMpeg1SampleRateTable);</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">static</span> <span class="keyword">inline</span> uint32_t Mpeg1SampleRate(uint8_t sr_idx, uint8_t version) {</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> sr_version_indexes[] = {2, -1, 1, 0}; <span class="comment">// {V2.5, RESERVED, V2, V1}</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  DCHECK_NE(version, 1);</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  DCHECK_LT(sr_idx, kMpeg1SampleRateTableSize);</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordflow">return</span> kMpeg1SampleRateTable[sr_idx][sr_version_indexes[version]];</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> }</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  </div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">const</span> uint32_t kMpeg1BitrateTable[][5] = {</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// clang-format off</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment">// V1:L1, V1:L2, V1:L3, V2:L1, V2&V2.5:L2&L3</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  { 0, 0, 0, 0, 0},</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  { 32, 32, 32, 32, 8},</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  { 64, 48, 40, 48, 16},</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  { 96, 56, 48, 56, 24},</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  { 128, 64, 56, 64, 32},</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  { 160, 80, 64, 80, 40},</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  { 192, 96, 80, 96, 48},</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  { 224, 112, 96, 112, 56},</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  { 256, 128, 112, 128, 64},</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  { 288, 160, 128, 144, 80},</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  { 320, 192, 160, 160, 96},</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  { 352, 224, 192, 176, 112},</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  { 384, 256, 224, 192, 128},</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  { 416, 320, 256, 224, 144},</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  { 448, 384, 320, 256, 160}};</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// clang-format on</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kMpeg1BitrateTableSize = arraysize(kMpeg1BitrateTable);</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="keyword">static</span> <span class="keyword">inline</span> uint32_t Mpeg1BitRate(uint8_t btr_idx,</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  uint8_t version,</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  uint8_t layer) {</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> btr_version_indexes[] = {1, -1, 1, 0}; <span class="comment">// {V2.5, RESERVED, V2, V1}</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> btr_layer_indexes[] = {-1, 2, 1, 0}; <span class="comment">// {RESERVED, L3, L2, L1}</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  DCHECK_NE(version, 1);</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  DCHECK_NE(layer, 0);</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">int</span> vidx = btr_version_indexes[version];</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">int</span> lidx = btr_layer_indexes[layer];</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">if</span> (vidx == 1 && lidx > 1)</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  lidx = 1;</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>  DCHECK_LT(vidx * 3 + lidx, 5);</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  DCHECK_LT(btr_idx, kMpeg1BitrateTableSize);</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> kMpeg1BitrateTable[btr_idx][vidx * 3 + lidx] * 1000;</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>  </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">size_t</span> Mpeg1FrameSize(uint8_t layer,</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  uint32_t bitrate,</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  uint32_t sample_rate,</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  uint8_t padded) {</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  DCHECK_GT(sample_rate, <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(0));</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">if</span> (layer == kMpeg1L_1)</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">return</span> (12 * bitrate / sample_rate + padded) * 4;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> 144 * bitrate / sample_rate + padded;</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> }</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">// namespace</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="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">namespace </span>mp2t {</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"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a878cf2eb2643d7bca7a823e82c01ff26"> 94</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a878cf2eb2643d7bca7a823e82c01ff26">Mpeg1Header::IsSyncWord</a>(<span class="keyword">const</span> uint8_t* buf)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> (buf[0] == 0xff) &&</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  ((buf[1] & 0b11100000) == 0b11100000)</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// Version 01 is reserved</span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  && ((buf[1] & 0b00011000) != 0b00001000)</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// Layer 00 is reserved</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  && ((buf[1] & 0b00000110) != 0b00000000);</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"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a258a401815c7c6268da2717da829103d"> 103</a></span> <span class="keywordtype">size_t</span> <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a258a401815c7c6268da2717da829103d">Mpeg1Header::GetMinFrameSize</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> kMpeg1HeaderMinSize + 1;</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</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"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ab0290813a0e04d3a84f85598455f261d"> 107</a></span> <span class="keywordtype">size_t</span> <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ab0290813a0e04d3a84f85598455f261d">Mpeg1Header::GetSamplesPerFrame</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> spf_layer_indexes[] = {-1, 2, 1, 0}; <span class="comment">// {RESERVED, L3, L2, L1}</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  DCHECK_NE(layer_, 0);</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> kMpeg1SamplesPerFrameTable[spf_layer_indexes[layer_]];</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> }</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
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<div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ad1bab37253425b1b7dd40182cbfc382d"> 113</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ad1bab37253425b1b7dd40182cbfc382d">Mpeg1Header::Parse</a>(<span class="keyword">const</span> uint8_t* mpeg1_frame, <span class="keywordtype">size_t</span> mpeg1_frame_size) {</div>
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|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  DCHECK(mpeg1_frame);</div>
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|
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  </div>
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|
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">if</span> (mpeg1_frame_size < kMpeg1HeaderMinSize)</div>
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|
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">return</span> <span class="keyword">false</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>  <a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html">BitReader</a> frame(mpeg1_frame, mpeg1_frame_size);</div>
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|
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">// Verify frame starts with sync bits (0x7ff).</span></div>
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|
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  uint32_t sync;</div>
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|
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#ae40382c4ca4a57b3bb3531a337aebbe4">ReadBits</a>(11, &sync));</div>
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|
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  RCHECK(sync == 0x7ff);</div>
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|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="comment">// MPEG version and layer.</span></div>
|
|
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#ae40382c4ca4a57b3bb3531a337aebbe4">ReadBits</a>(2, &version_));</div>
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|
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  RCHECK(version_ != kMpeg1V_INV);</div>
|
|
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#ae40382c4ca4a57b3bb3531a337aebbe4">ReadBits</a>(2, &layer_));</div>
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|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  RCHECK(layer_ != kMpeg1L_INV);</div>
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|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#ae40382c4ca4a57b3bb3531a337aebbe4">ReadBits</a>(1, &protection_absent_));</div>
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|
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div>
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|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  uint8_t btr_idx;</div>
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|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#ae40382c4ca4a57b3bb3531a337aebbe4">ReadBits</a>(4, &btr_idx));</div>
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|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  RCHECK(btr_idx > 0);</div>
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|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  bitrate_ = Mpeg1BitRate(btr_idx, version_, layer_);</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>  uint8_t sr_idx;</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#ae40382c4ca4a57b3bb3531a337aebbe4">ReadBits</a>(2, &sr_idx));</div>
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|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  RCHECK(sr_idx < 0b11);</div>
|
|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  sample_rate_ = Mpeg1SampleRate(sr_idx, version_);</div>
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|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
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|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#ae40382c4ca4a57b3bb3531a337aebbe4">ReadBits</a>(1, &padded_));</div>
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|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// Skip private stream bit.</span></div>
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|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a4ab20ef220c76072eaecb982aba0541d">SkipBits</a>(1));</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>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#ae40382c4ca4a57b3bb3531a337aebbe4">ReadBits</a>(2, &channel_mode_));</div>
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|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">// Skip Mode extension</span></div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a4ab20ef220c76072eaecb982aba0541d">SkipBits</a>(2));</div>
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|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// Skip copyright, origination and emphasis info.</span></div>
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|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  RCHECK(frame.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a4ab20ef220c76072eaecb982aba0541d">SkipBits</a>(4));</div>
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|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  </div>
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|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> }</div>
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|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  </div>
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|
<div class="line"><a name="l00154"></a><span class="lineno"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ae0affa07b94967c15d964c6d8e765281"> 154</a></span> <span class="keywordtype">size_t</span> <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ae0affa07b94967c15d964c6d8e765281">Mpeg1Header::GetHeaderSize</a>()<span class="keyword"> const </span>{</div>
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|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="comment">// Unlike ADTS, for MP3, the whole frame is included in the media sample, so</span></div>
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|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="comment">// return 0 header size.</span></div>
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|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> 0;</div>
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|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> }</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  </div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a5729b3abb8dc68d52041854638fc36c8"> 160</a></span> <span class="keywordtype">size_t</span> <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a5729b3abb8dc68d52041854638fc36c8">Mpeg1Header::GetFrameSize</a>()<span class="keyword"> const </span>{</div>
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|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">return</span> Mpeg1FrameSize(layer_, bitrate_, sample_rate_, padded_);</div>
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> }</div>
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  </div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a81caa6dafd34688f2ef5a4c9e076b5f5"> 164</a></span> <span class="keywordtype">size_t</span> <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a81caa6dafd34688f2ef5a4c9e076b5f5">Mpeg1Header::GetFrameSizeWithoutParsing</a>(<span class="keyword">const</span> uint8_t* data,</div>
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|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordtype">size_t</span> num_bytes)<span class="keyword"> const </span>{</div>
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|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  DCHECK_GT(num_bytes, <span class="keyword">static_cast<</span><span class="keywordtype">size_t</span><span class="keyword">></span>(2));</div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  uint8_t version = (data[1] & 0b00011000) >> 3;</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  uint8_t layer = (data[1] & 0b00000110) >> 1;</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  uint8_t btr_idx = (data[2] & 0b11110000) >> 4;</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  uint8_t sr_idx = (data[2] & 0b00001100) >> 2;</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  uint8_t padded = (data[2] & 0b00000010) >> 1;</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">if</span> ((version == kMpeg1V_INV) || (layer == kMpeg1L_INV) || (btr_idx == 0) ||</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  (sr_idx == 0b11))</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  </div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  uint32_t bitrate = Mpeg1BitRate(btr_idx, version, layer);</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  uint32_t samplerate = Mpeg1SampleRate(sr_idx, version);</div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">return</span> Mpeg1FrameSize(layer, bitrate, samplerate, padded);</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> }</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  </div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a6cb1a3e117dbca962b4b970885d79808"> 182</a></span> <span class="keywordtype">void</span> <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a6cb1a3e117dbca962b4b970885d79808">Mpeg1Header::GetAudioSpecificConfig</a>(std::vector<uint8_t>* buffer)<span class="keyword"> const </span>{</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="comment">// The following conversion table is extracted from ISO 14496 Part 3 -</span></div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="comment">// Table 1.16 - Sampling Frequency Index.</span></div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kConfigFrequencyTable[] = {</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  96000, 88200, 64000, 48000, 44100, 32000, 24000,</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  22050, 16000, 12000, 11025, 8000, 7350};</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kConfigFrequencyTableSize =</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  arraysize(kConfigFrequencyTable);</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  uint8_t cft_idx;</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  </div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">for</span> (cft_idx = 0; cft_idx < kConfigFrequencyTableSize; cft_idx++)</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">if</span> (sample_rate_ == kConfigFrequencyTable[cft_idx])</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  </div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  DCHECK(buffer);</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  buffer->clear();</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <a class="code" href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html">BitWriter</a> config(buffer);</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  </div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="comment">// ISO/IEC 14496:3 Table 1.16 Syntax of GetAudioObjetType()</span></div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">auto</span> object_type = <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a9415d54734d3e6ca017455239504e4fe">GetObjectType</a>();</div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">if</span> (object_type <= 31) {</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  config.<a class="code" href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html#aee5f905e55f262e38f5df506611663f1">WriteBits</a>(object_type, 5);</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  config.<a class="code" href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html#aee5f905e55f262e38f5df506611663f1">WriteBits</a>(31, 5);</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  config.<a class="code" href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html#aee5f905e55f262e38f5df506611663f1">WriteBits</a>(object_type - 32, 6);</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  }</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  </div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  config.<a class="code" href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html#aee5f905e55f262e38f5df506611663f1">WriteBits</a>(cft_idx, 4);</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="comment">/*</span></div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment"> * NOTE: Number of channels matches channel_configuration index,</span></div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment"> * since mpeg1 audio has only 1 or 2 channels</span></div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment"> */</span></div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  config.<a class="code" href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html#aee5f905e55f262e38f5df506611663f1">WriteBits</a>(<a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a97407fbb7c10535233b6005cf06d3c95">GetNumChannels</a>(), 4);</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  config.<a class="code" href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html#a1c14f04a0bb3090edb3ac0fffa346bc1">Flush</a>();</div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> }</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  </div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a9415d54734d3e6ca017455239504e4fe"> 218</a></span> uint8_t <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a9415d54734d3e6ca017455239504e4fe">Mpeg1Header::GetObjectType</a>()<span class="keyword"> const </span>{</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">/*</span></div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment"> * ISO14496-3:2009 Table 1.17 - Audio Object Types</span></div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment"> */</span></div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span> (layer_ == kMpeg1L_1)</div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">return</span> 32;</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">if</span> (layer_ == kMpeg1L_2)</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">return</span> 33;</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  </div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  DCHECK_EQ(layer_, kMpeg1L_3);</div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">return</span> 34;</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> }</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  </div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ab6ceb2d6d3f820f56f2ecbdb93e9f81a"> 231</a></span> uint32_t <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ab6ceb2d6d3f820f56f2ecbdb93e9f81a">Mpeg1Header::GetSamplingFrequency</a>()<span class="keyword"> const </span>{</div>
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|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">return</span> sample_rate_;</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> }</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  </div>
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<div class="line"><a name="l00235"></a><span class="lineno"><a class="line" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a97407fbb7c10535233b6005cf06d3c95"> 235</a></span> uint8_t <a class="code" href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a97407fbb7c10535233b6005cf06d3c95">Mpeg1Header::GetNumChannels</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">if</span> (channel_mode_ == 0b11)</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">return</span> 1;</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">return</span> 2;</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> }</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  </div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> } <span class="comment">// namespace mp2t</span></div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> } <span class="comment">// namespace shaka</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="aclassshaka_1_1media_1_1BitReader_html_ae40382c4ca4a57b3bb3531a337aebbe4"><div class="ttname"><a href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#ae40382c4ca4a57b3bb3531a337aebbe4">shaka::media::BitReader::ReadBits</a></div><div class="ttdeci">bool ReadBits(size_t num_bits, T *out)</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/dd3/bit__reader_8h_source.html#l00035">bit_reader.h:35</a></div></div>
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<div class="ttc" id="anamespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_a9415d54734d3e6ca017455239504e4fe"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a9415d54734d3e6ca017455239504e4fe">shaka::media::mp2t::Mpeg1Header::GetObjectType</a></div><div class="ttdeci">uint8_t GetObjectType() const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00218">mpeg1_header.cc:218</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1BitReader_html"><div class="ttname"><a href="../../d6/da9/classshaka_1_1media_1_1BitReader.html">shaka::media::BitReader</a></div><div class="ttdoc">A class to read bit streams.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/dd3/bit__reader_8h_source.html#l00017">bit_reader.h:17</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_a258a401815c7c6268da2717da829103d"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a258a401815c7c6268da2717da829103d">shaka::media::mp2t::Mpeg1Header::GetMinFrameSize</a></div><div class="ttdeci">size_t GetMinFrameSize() const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00103">mpeg1_header.cc:103</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_a6cb1a3e117dbca962b4b970885d79808"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a6cb1a3e117dbca962b4b970885d79808">shaka::media::mp2t::Mpeg1Header::GetAudioSpecificConfig</a></div><div class="ttdeci">void GetAudioSpecificConfig(std::vector< uint8_t > *buffer) const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00182">mpeg1_header.cc:182</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_a97407fbb7c10535233b6005cf06d3c95"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a97407fbb7c10535233b6005cf06d3c95">shaka::media::mp2t::Mpeg1Header::GetNumChannels</a></div><div class="ttdeci">uint8_t GetNumChannels() const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00235">mpeg1_header.cc:235</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_ab0290813a0e04d3a84f85598455f261d"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ab0290813a0e04d3a84f85598455f261d">shaka::media::mp2t::Mpeg1Header::GetSamplesPerFrame</a></div><div class="ttdeci">size_t GetSamplesPerFrame() const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00107">mpeg1_header.cc:107</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_a81caa6dafd34688f2ef5a4c9e076b5f5"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a81caa6dafd34688f2ef5a4c9e076b5f5">shaka::media::mp2t::Mpeg1Header::GetFrameSizeWithoutParsing</a></div><div class="ttdeci">size_t GetFrameSizeWithoutParsing(const uint8_t *data, size_t num_bytes) const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00164">mpeg1_header.cc:164</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1BitWriter_html"><div class="ttname"><a href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html">shaka::media::BitWriter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d0/dbc/bit__writer_8h_source.html#l00019">bit_writer.h:19</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1BitWriter_html_aee5f905e55f262e38f5df506611663f1"><div class="ttname"><a href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html#aee5f905e55f262e38f5df506611663f1">shaka::media::BitWriter::WriteBits</a></div><div class="ttdeci">void WriteBits(uint32_t bits, size_t number_of_bits)</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d58/bit__writer_8cc_source.html#l00015">bit_writer.cc:15</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_a878cf2eb2643d7bca7a823e82c01ff26"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a878cf2eb2643d7bca7a823e82c01ff26">shaka::media::mp2t::Mpeg1Header::IsSyncWord</a></div><div class="ttdeci">bool IsSyncWord(const uint8_t *buf) const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00094">mpeg1_header.cc:94</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1BitReader_html_a4ab20ef220c76072eaecb982aba0541d"><div class="ttname"><a href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a4ab20ef220c76072eaecb982aba0541d">shaka::media::BitReader::SkipBits</a></div><div class="ttdeci">bool SkipBits(size_t num_bits)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/de0/bit__reader_8cc_source.html#l00024">bit_reader.cc:24</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_a5729b3abb8dc68d52041854638fc36c8"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#a5729b3abb8dc68d52041854638fc36c8">shaka::media::mp2t::Mpeg1Header::GetFrameSize</a></div><div class="ttdeci">size_t GetFrameSize() const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00160">mpeg1_header.cc:160</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_ad1bab37253425b1b7dd40182cbfc382d"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ad1bab37253425b1b7dd40182cbfc382d">shaka::media::mp2t::Mpeg1Header::Parse</a></div><div class="ttdeci">bool Parse(const uint8_t *mpeg1_frame, size_t mpeg1_frame_size) override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00113">mpeg1_header.cc:113</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1BitWriter_html_a1c14f04a0bb3090edb3ac0fffa346bc1"><div class="ttname"><a href="../../dc/d76/classshaka_1_1media_1_1BitWriter.html#a1c14f04a0bb3090edb3ac0fffa346bc1">shaka::media::BitWriter::Flush</a></div><div class="ttdeci">void Flush()</div><div class="ttdoc">Write pending bits, and align bitstream with extra zero bits.</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d58/bit__writer_8cc_source.html#l00031">bit_writer.cc:31</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_ab6ceb2d6d3f820f56f2ecbdb93e9f81a"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ab6ceb2d6d3f820f56f2ecbdb93e9f81a">shaka::media::mp2t::Mpeg1Header::GetSamplingFrequency</a></div><div class="ttdeci">uint32_t GetSamplingFrequency() const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00231">mpeg1_header.cc:231</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp2t_1_1Mpeg1Header_html_ae0affa07b94967c15d964c6d8e765281"><div class="ttname"><a href="../../dd/d79/classshaka_1_1media_1_1mp2t_1_1Mpeg1Header.html#ae0affa07b94967c15d964c6d8e765281">shaka::media::mp2t::Mpeg1Header::GetHeaderSize</a></div><div class="ttdeci">size_t GetHeaderSize() const override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d75/mpeg1__header_8cc_source.html#l00154">mpeg1_header.cc:154</a></div></div>
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