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<div class="title">vp9_parser.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 2015 Google Inc. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Use of this source code is governed by a BSD-style</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// license that can be found in the LICENSE file or at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/media/filters/vp9_parser.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/bit_reader.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/formats/mp4/rcheck.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="keyword">namespace </span>edash_packager {</div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">const</span> uint32_t VP9_FRAME_MARKER = 2;</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">const</span> uint32_t VP9_SYNC_CODE = 0x498342;</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">const</span> uint32_t REFS_PER_FRAME = 3;</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">const</span> uint32_t REF_FRAMES_LOG2 = 3;</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">const</span> uint32_t REF_FRAMES = (1 << REF_FRAMES_LOG2);</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">const</span> uint32_t FRAME_CONTEXTS_LOG2 = 2;</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">const</span> uint32_t MAX_REF_LF_DELTAS = 4;</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">const</span> uint32_t MAX_MODE_LF_DELTAS = 2;</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">const</span> uint32_t QINDEX_BITS = 8;</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">const</span> uint32_t MAX_SEGMENTS = 8;</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">const</span> uint32_t SEG_TREE_PROBS = (MAX_SEGMENTS - 1);</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">const</span> uint32_t PREDICTION_PROBS = 3;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">const</span> uint32_t SEG_LVL_MAX = 4;</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">const</span> uint32_t MI_SIZE_LOG2 = 3;</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">const</span> uint32_t MI_BLOCK_SIZE_LOG2 = (6 - MI_SIZE_LOG2); <span class="comment">// 64 = 2^6</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">const</span> uint32_t MIN_TILE_WIDTH_B64 = 4;</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">const</span> uint32_t MAX_TILE_WIDTH_B64 = 64;</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> SEG_FEATURE_DATA_SIGNED[SEG_LVL_MAX] = {<span class="keyword">true</span>, <span class="keyword">true</span>, <span class="keyword">false</span>, <span class="keyword">false</span>};</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">const</span> uint32_t SEG_FEATURE_DATA_MAX_BITS[SEG_LVL_MAX] = {8, 6, 2, 0};</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> <span class="keyword">enum</span> VpxColorSpace {</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  VPX_COLOR_SPACE_UNKNOWN = 0,</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  VPX_COLOR_SPACE_BT_601 = 1,</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  VPX_COLOR_SPACE_BT_709 = 2,</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  VPX_COLOR_SPACE_SMPTE_170 = 3,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  VPX_COLOR_SPACE_SMPTE_240 = 4,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  VPX_COLOR_SPACE_BT_2020 = 5,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  VPX_COLOR_SPACE_RESERVED = 6,</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  VPX_COLOR_SPACE_SRGB = 7,</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> </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> uint32_t RoundupShift(uint32_t value, uint32_t n) {</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> (value + (1 << n) - 1) >> n;</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> </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// Number of MI-units (8*8).</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> uint32_t GetNumMiUnits(uint32_t pixels) {</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> RoundupShift(pixels, MI_SIZE_LOG2);</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> </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">// Number of sb64 (64x64) blocks per mi_units.</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> uint32_t GetNumBlocks(uint32_t mi_units) {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> RoundupShift(mi_units, MI_BLOCK_SIZE_LOG2);</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> }</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> uint32_t GetMinLog2TileCols(uint32_t sb64_cols) {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  uint32_t min_log2 = 0;</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">while</span> ((MAX_TILE_WIDTH_B64 << min_log2) < sb64_cols)</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  ++min_log2;</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">return</span> min_log2;</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> </div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> uint32_t GetMaxLog2TileCols(uint32_t sb64_cols) {</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  uint32_t max_log2 = 1;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">while</span> ((sb64_cols >> max_log2) >= MIN_TILE_WIDTH_B64)</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  ++max_log2;</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">return</span> max_log2 - 1;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> }</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keywordtype">void</span> GetTileNBits(uint32_t mi_cols,</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  uint32_t* min_log2_tile_cols,</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  uint32_t* max_log2_tile_cols) {</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">const</span> uint32_t sb64_cols = GetNumBlocks(mi_cols);</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  *min_log2_tile_cols = GetMinLog2TileCols(sb64_cols);</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  *max_log2_tile_cols = GetMaxLog2TileCols(sb64_cols);</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  CHECK_LE(*min_log2_tile_cols, *max_log2_tile_cols);</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> </div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment">// Parse superframe index if it is a superframe. Fill |vpx_frames| with the</span></div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment">// frames information, which contains the sizes of the frames indicated in</span></div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// superframe index if it is a superframe; otherwise it should contain one</span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// single frame with |data_size| as frame size.</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keywordtype">bool</span> ParseIfSuperframeIndex(<span class="keyword">const</span> uint8_t* data,</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordtype">size_t</span> data_size,</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  std::vector<VPxFrameInfo>* vpx_frames) {</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  vpx_frames->clear();</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  uint8_t superframe_marker = data[data_size - 1];</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  VPxFrameInfo vpx_frame;</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">if</span> ((superframe_marker & 0xe0) != 0xc0) {</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// This is not a super frame. There should be only one frame.</span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  vpx_frame.frame_size = data_size;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  vpx_frames->push_back(vpx_frame);</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  }</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> num_frames = (superframe_marker & 0x07) + 1;</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> frame_size_length = ((superframe_marker >> 3) & 0x03) + 1;</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">// Two maker bytes + frame sizes.</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> index_size = 2 + num_frames * frame_size_length;</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">if</span> (data_size < index_size) {</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  LOG(ERROR) << <span class="stringliteral">"This chunk is marked as having a superframe index but "</span></div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="stringliteral">"doesn't have enough data for it."</span>;</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> <span class="keyword">false</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"> 113</span>  <span class="keyword">const</span> uint8_t superframe_marker2 = data[data_size - index_size];</div>
|
|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> (superframe_marker2 != superframe_marker) {</div>
|
|
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  LOG(ERROR) << <span class="stringliteral">"This chunk is marked as having a superframe index but "</span></div>
|
|
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="stringliteral">"doesn't have the matching marker byte at the front of the "</span></div>
|
|
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="stringliteral">"index."</span>;</div>
|
|
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div>
|
|
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  VLOG(3) << <span class="stringliteral">"Superframe num_frames="</span> << num_frames</div>
|
|
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  << <span class="stringliteral">" frame_size_length="</span> << frame_size_length;</div>
|
|
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
|
|
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  data += data_size - index_size + 1;</div>
|
|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordtype">size_t</span> total_frame_sizes = 0;</div>
|
|
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < num_frames; ++i) {</div>
|
|
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  vpx_frame.frame_size = 0;</div>
|
|
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < frame_size_length; ++i) {</div>
|
|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  vpx_frame.frame_size |= *data << (i * 8);</div>
|
|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  ++data;</div>
|
|
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  }</div>
|
|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  total_frame_sizes += vpx_frame.frame_size;</div>
|
|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  vpx_frames->push_back(vpx_frame);</div>
|
|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div>
|
|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">if</span> (total_frame_sizes + index_size != data_size) {</div>
|
|
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  LOG(ERROR) << <span class="stringliteral">"Data size ("</span> << data_size</div>
|
|
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  << <span class="stringliteral">") does not match with sum of frame sizes ("</span></div>
|
|
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  << total_frame_sizes << <span class="stringliteral">") + index_size ("</span> << index_size << <span class="stringliteral">")"</span>;</div>
|
|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> }</div>
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="keywordtype">bool</span> ReadProfile(BitReader* reader, VPCodecConfiguration* codec_config) {</div>
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  uint8_t bit[2];</div>
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  RCHECK(reader->ReadBits(1, &bit[0]));</div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  RCHECK(reader->ReadBits(1, &bit[1]));</div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  uint8_t profile = bit[0] | (bit[1] << 1);</div>
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">if</span> (profile == 3) {</div>
|
|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordtype">bool</span> reserved;</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  RCHECK(reader->ReadBits(1, &reserved));</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  RCHECK(!reserved);</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  }</div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  codec_config->set_profile(profile);</div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> }</div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="keywordtype">bool</span> ReadSyncCode(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  uint32_t sync_code;</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  RCHECK(reader->ReadBits(24, &sync_code));</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">return</span> sync_code == VP9_SYNC_CODE;</div>
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> }</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> VPCodecConfiguration::ColorSpace GetColorSpace(uint8_t color_space) {</div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">switch</span> (color_space) {</div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">case</span> VPX_COLOR_SPACE_UNKNOWN:</div>
|
|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">return</span> VPCodecConfiguration::COLOR_SPACE_UNSPECIFIED;</div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">case</span> VPX_COLOR_SPACE_BT_601:</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">return</span> VPCodecConfiguration::COLOR_SPACE_BT_601;</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">case</span> VPX_COLOR_SPACE_BT_709:</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">return</span> VPCodecConfiguration::COLOR_SPACE_BT_709;</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">case</span> VPX_COLOR_SPACE_SMPTE_170:</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">return</span> VPCodecConfiguration::COLOR_SPACE_SMPTE_170;</div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">case</span> VPX_COLOR_SPACE_SMPTE_240:</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">return</span> VPCodecConfiguration::COLOR_SPACE_SMPTE_240;</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">case</span> VPX_COLOR_SPACE_BT_2020:</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// VP9 does not specify if it is in the form of “constant luminance” or</span></div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="comment">// “non-constant luminance”. As such, application should rely on the</span></div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="comment">// signaling outside of VP9 bitstream. If there is no such signaling,</span></div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// application may assume non-constant luminance for BT.2020.</span></div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">return</span> VPCodecConfiguration::COLOR_SPACE_BT_2020_NON_CONSTANT_LUMINANCE;</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">case</span> VPX_COLOR_SPACE_SRGB:</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">return</span> VPCodecConfiguration::COLOR_SPACE_SRGB;</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">default</span>:</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  LOG(WARNING) << <span class="stringliteral">"Unknown color space: "</span> << <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(color_space);</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">return</span> VPCodecConfiguration::COLOR_SPACE_UNSPECIFIED;</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  }</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> }</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> VPCodecConfiguration::ChromaSubsampling GetChromaSubsampling(</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  uint8_t subsampling) {</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">switch</span> (subsampling) {</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">case</span> 0:</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">return</span> VPCodecConfiguration::CHROMA_444;</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">case</span> 1:</div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">return</span> VPCodecConfiguration::CHROMA_440;</div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">case</span> 2:</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">return</span> VPCodecConfiguration::CHROMA_422;</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">case</span> 3:</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="comment">// VP9 assumes that chrome samples are collocated with luma samples if</span></div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="comment">// there is no explicit signaling outside of VP9 bitstream.</span></div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">return</span> VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA;</div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">default</span>:</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  LOG(WARNING) << <span class="stringliteral">"Unexpected chroma subsampling value: "</span></div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  << <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(subsampling);</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">return</span> VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA;</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  }</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> <span class="keywordtype">bool</span> ReadBitDepthAndColorSpace(BitReader* reader,</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  VPCodecConfiguration* codec_config) {</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  uint8_t bit_depth = 8;</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">if</span> (codec_config->profile() >= 2) {</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordtype">bool</span> use_vpx_bits_12;</div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  RCHECK(reader->ReadBits(1, &use_vpx_bits_12));</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  bit_depth = use_vpx_bits_12 ? 12 : 10;</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>  codec_config->set_bit_depth(bit_depth);</div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  uint8_t color_space;</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  RCHECK(reader->ReadBits(3, &color_space));</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  codec_config->set_color_space(GetColorSpace(color_space));</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordtype">bool</span> yuv_full_range = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keyword">auto</span> chroma_subsampling = VPCodecConfiguration::CHROMA_444;</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">if</span> (color_space != VPX_COLOR_SPACE_SRGB) {</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  RCHECK(reader->ReadBits(1, &yuv_full_range));</div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">if</span> (codec_config->profile() & 1) {</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  uint8_t subsampling;</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  RCHECK(reader->ReadBits(2, &subsampling));</div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  chroma_subsampling = GetChromaSubsampling(subsampling);</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">if</span> (chroma_subsampling ==</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA) {</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  LOG(ERROR) << <span class="stringliteral">"4:2:0 color not supported in profile "</span></div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  << codec_config->profile();</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  }</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordtype">bool</span> reserved;</div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  RCHECK(reader->ReadBits(1, &reserved));</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  RCHECK(!reserved);</div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  chroma_subsampling =</div>
|
|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA;</div>
|
|
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  }</div>
|
|
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="comment">// Assume 4:4:4 for colorspace SRGB.</span></div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  chroma_subsampling = VPCodecConfiguration::CHROMA_444;</div>
|
|
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">if</span> (codec_config->profile() & 1) {</div>
|
|
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordtype">bool</span> reserved;</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  RCHECK(reader->ReadBits(1, &reserved));</div>
|
|
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  RCHECK(!reserved);</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  LOG(ERROR) << <span class="stringliteral">"4:4:4 color not supported in profile 0 or 2."</span>;</div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  }</div>
|
|
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div>
|
|
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  codec_config->set_video_full_range_flag(yuv_full_range);</div>
|
|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  codec_config->set_chroma_subsampling(chroma_subsampling);</div>
|
|
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div>
|
|
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  VLOG(3) << <span class="stringliteral">"\n profile "</span> << <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(codec_config->profile())</div>
|
|
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  << <span class="stringliteral">"\n bit depth "</span> << static_cast<int>(codec_config->bit_depth())</div>
|
|
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  << <span class="stringliteral">"\n color space "</span> << static_cast<int>(codec_config->color_space())</div>
|
|
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  << <span class="stringliteral">"\n full_range "</span></div>
|
|
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  << static_cast<int>(codec_config->video_full_range_flag())</div>
|
|
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  << <span class="stringliteral">"\n chroma subsampling "</span></div>
|
|
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  << static_cast<int>(codec_config->chroma_subsampling());</div>
|
|
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> }</div>
|
|
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div>
|
|
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="keywordtype">bool</span> ReadFrameSize(BitReader* reader, uint32_t* width, uint32_t* height) {</div>
|
|
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  RCHECK(reader->ReadBits(16, width));</div>
|
|
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  *width += 1; <span class="comment">// Off by 1.</span></div>
|
|
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  RCHECK(reader->ReadBits(16, height));</div>
|
|
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  *height += 1; <span class="comment">// Off by 1.</span></div>
|
|
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> }</div>
|
|
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div>
|
|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="keywordtype">bool</span> ReadDisplayFrameSize(BitReader* reader,</div>
|
|
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  uint32_t* display_width,</div>
|
|
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  uint32_t* display_height) {</div>
|
|
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordtype">bool</span> has_display_size;</div>
|
|
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  RCHECK(reader->ReadBits(1, &has_display_size));</div>
|
|
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">if</span> (has_display_size)</div>
|
|
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  RCHECK(ReadFrameSize(reader, display_width, display_height));</div>
|
|
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> }</div>
|
|
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div>
|
|
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="keywordtype">bool</span> ReadFrameSizes(BitReader* reader, uint32_t* width, uint32_t* height) {</div>
|
|
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  uint32_t new_width;</div>
|
|
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  uint32_t new_height;</div>
|
|
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  RCHECK(ReadFrameSize(reader, &new_width, &new_height));</div>
|
|
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">if</span> (new_width != *width) {</div>
|
|
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  VLOG(1) << <span class="stringliteral">"Width updates from "</span> << *width << <span class="stringliteral">" to "</span> << new_width;</div>
|
|
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  *width = new_width;</div>
|
|
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  }</div>
|
|
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">if</span> (new_height != *height) {</div>
|
|
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  VLOG(1) << <span class="stringliteral">"Height updates from "</span> << *height << <span class="stringliteral">" to "</span> << new_height;</div>
|
|
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  *height = new_height;</div>
|
|
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  }</div>
|
|
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> </div>
|
|
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  uint32_t display_width = *width;</div>
|
|
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  uint32_t display_height = *height;</div>
|
|
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  RCHECK(ReadDisplayFrameSize(reader, &display_width, &display_height));</div>
|
|
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> }</div>
|
|
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div>
|
|
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="keywordtype">bool</span> ReadFrameSizesWithRefs(BitReader* reader,</div>
|
|
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  uint32_t* width,</div>
|
|
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  uint32_t* height) {</div>
|
|
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordtype">bool</span> found = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < REFS_PER_FRAME; ++i) {</div>
|
|
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  RCHECK(reader->ReadBits(1, &found));</div>
|
|
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordflow">if</span> (found)</div>
|
|
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  }</div>
|
|
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="keywordflow">if</span> (!found) {</div>
|
|
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  RCHECK(ReadFrameSizes(reader, width, height));</div>
|
|
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  uint32_t display_width;</div>
|
|
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  uint32_t display_height;</div>
|
|
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  RCHECK(ReadDisplayFrameSize(reader, &display_width, &display_height));</div>
|
|
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  }</div>
|
|
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> }</div>
|
|
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div>
|
|
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="keywordtype">bool</span> ReadLoopFilter(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  RCHECK(reader->SkipBits(9)); <span class="comment">// filter_evel, sharness_level</span></div>
|
|
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordtype">bool</span> mode_ref_delta_enabled;</div>
|
|
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  RCHECK(reader->ReadBits(1, &mode_ref_delta_enabled));</div>
|
|
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="keywordflow">if</span> (!mode_ref_delta_enabled)</div>
|
|
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordtype">bool</span> mode_ref_delta_update;</div>
|
|
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  RCHECK(reader->ReadBits(1, &mode_ref_delta_update));</div>
|
|
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordflow">if</span> (!mode_ref_delta_update)</div>
|
|
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div>
|
|
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < MAX_REF_LF_DELTAS + MAX_MODE_LF_DELTAS; ++i)</div>
|
|
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 6 + 1));</div>
|
|
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> }</div>
|
|
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div>
|
|
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="keywordtype">bool</span> ReadQuantization(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  RCHECK(reader->SkipBits(QINDEX_BITS));</div>
|
|
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="comment">// Skip delta_q bits.</span></div>
|
|
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < 3; ++i)</div>
|
|
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 4 + 1));</div>
|
|
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> }</div>
|
|
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> </div>
|
|
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="keywordtype">bool</span> ReadSegmentation(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keywordtype">bool</span> enabled;</div>
|
|
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  RCHECK(reader->ReadBits(1, &enabled));</div>
|
|
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordflow">if</span> (!enabled)</div>
|
|
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> </div>
|
|
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordtype">bool</span> update_map;</div>
|
|
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  RCHECK(reader->ReadBits(1, &update_map));</div>
|
|
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordflow">if</span> (update_map) {</div>
|
|
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < SEG_TREE_PROBS; ++i)</div>
|
|
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 8));</div>
|
|
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> </div>
|
|
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordtype">bool</span> temporal_update;</div>
|
|
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  RCHECK(reader->ReadBits(1, &temporal_update));</div>
|
|
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keywordflow">if</span> (temporal_update) {</div>
|
|
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">for</span> (uint32_t j = 0; j < PREDICTION_PROBS; ++j)</div>
|
|
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 8));</div>
|
|
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  }</div>
|
|
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  }</div>
|
|
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span> </div>
|
|
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="keywordtype">bool</span> update_data;</div>
|
|
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  RCHECK(reader->ReadBits(1, &update_data));</div>
|
|
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">if</span> (update_data) {</div>
|
|
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  RCHECK(reader->SkipBits(1)); <span class="comment">// abs_delta</span></div>
|
|
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < MAX_SEGMENTS; ++i) {</div>
|
|
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keywordflow">for</span> (uint32_t j = 0; j < SEG_LVL_MAX; ++j) {</div>
|
|
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="keywordtype">bool</span> feature_enabled;</div>
|
|
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  RCHECK(reader->ReadBits(1, &feature_enabled));</div>
|
|
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="keywordflow">if</span> (feature_enabled) {</div>
|
|
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  RCHECK(reader->SkipBits(SEG_FEATURE_DATA_MAX_BITS[j]));</div>
|
|
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keywordflow">if</span> (SEG_FEATURE_DATA_SIGNED[j])</div>
|
|
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  RCHECK(reader->SkipBits(1)); <span class="comment">// signness</span></div>
|
|
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  }</div>
|
|
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  }</div>
|
|
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  }</div>
|
|
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  }</div>
|
|
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> }</div>
|
|
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> </div>
|
|
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="keywordtype">bool</span> ReadTileInfo(uint32_t width, BitReader* reader) {</div>
|
|
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  uint32_t mi_cols = GetNumMiUnits(width);</div>
|
|
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div>
|
|
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  uint32_t min_log2_tile_cols;</div>
|
|
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  uint32_t max_log2_tile_cols;</div>
|
|
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  GetTileNBits(mi_cols, &min_log2_tile_cols, &max_log2_tile_cols);</div>
|
|
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  uint32_t max_ones = max_log2_tile_cols - min_log2_tile_cols;</div>
|
|
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> </div>
|
|
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  uint32_t log2_tile_cols = min_log2_tile_cols;</div>
|
|
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keywordflow">while</span> (max_ones--) {</div>
|
|
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keywordtype">bool</span> has_more;</div>
|
|
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  RCHECK(reader->ReadBits(1, &has_more));</div>
|
|
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keywordflow">if</span> (!has_more)</div>
|
|
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  ++log2_tile_cols;</div>
|
|
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  }</div>
|
|
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  RCHECK(log2_tile_cols <= 6);</div>
|
|
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> </div>
|
|
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 1)); <span class="comment">// log2_tile_rows</span></div>
|
|
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> }</div>
|
|
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> </div>
|
|
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> } <span class="comment">// namespace</span></div>
|
|
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> </div>
|
|
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> VP9Parser::VP9Parser() : width_(0), height_(0) {}</div>
|
|
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span> VP9Parser::~VP9Parser() {}</div>
|
|
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> </div>
|
|
<div class="line"><a name="l00417"></a><span class="lineno"><a class="line" href="../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html#a8b997dee438daade536e8ea189d110ed"> 417</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html#a8b997dee438daade536e8ea189d110ed">VP9Parser::Parse</a>(<span class="keyword">const</span> uint8_t* data,</div>
|
|
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keywordtype">size_t</span> data_size,</div>
|
|
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  std::vector<VPxFrameInfo>* vpx_frames) {</div>
|
|
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  DCHECK(data);</div>
|
|
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  DCHECK(vpx_frames);</div>
|
|
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  RCHECK(ParseIfSuperframeIndex(data, data_size, vpx_frames));</div>
|
|
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> </div>
|
|
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& vpx_frame : *vpx_frames) {</div>
|
|
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  VLOG(4) << <span class="stringliteral">"process frame with size "</span> << vpx_frame.frame_size;</div>
|
|
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html">BitReader</a> reader(data, vpx_frame.frame_size);</div>
|
|
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  uint8_t frame_marker;</div>
|
|
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(2, &frame_marker));</div>
|
|
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  RCHECK(frame_marker == VP9_FRAME_MARKER);</div>
|
|
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> </div>
|
|
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  RCHECK(ReadProfile(&reader, writable_codec_config()));</div>
|
|
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> </div>
|
|
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="keywordtype">bool</span> show_existing_frame;</div>
|
|
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(1, &show_existing_frame));</div>
|
|
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="keywordflow">if</span> (show_existing_frame) {</div>
|
|
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(3)); <span class="comment">// ref_frame_index</span></div>
|
|
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="comment">// End of current frame data. There should be no more bytes available.</span></div>
|
|
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a1409a0968749ca5a55ba823cd718065b">bits_available</a>() < 8);</div>
|
|
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> </div>
|
|
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  vpx_frame.is_keyframe = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  vpx_frame.uncompressed_header_size = vpx_frame.frame_size;</div>
|
|
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  vpx_frame.width = width_;</div>
|
|
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  vpx_frame.height = height_;</div>
|
|
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  }</div>
|
|
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> </div>
|
|
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keywordtype">bool</span> is_interframe;</div>
|
|
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(1, &is_interframe));</div>
|
|
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  vpx_frame.is_keyframe = !is_interframe;</div>
|
|
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span> </div>
|
|
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordtype">bool</span> show_frame;</div>
|
|
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(1, &show_frame));</div>
|
|
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="keywordtype">bool</span> error_resilient_mode;</div>
|
|
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(1, &error_resilient_mode));</div>
|
|
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span> </div>
|
|
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">if</span> (vpx_frame.is_keyframe) {</div>
|
|
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  RCHECK(ReadSyncCode(&reader));</div>
|
|
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  RCHECK(ReadBitDepthAndColorSpace(&reader, writable_codec_config()));</div>
|
|
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  RCHECK(ReadFrameSizes(&reader, &width_, &height_));</div>
|
|
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="keywordtype">bool</span> intra_only = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keywordflow">if</span> (!show_frame)</div>
|
|
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(1, &intra_only));</div>
|
|
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="keywordflow">if</span> (!error_resilient_mode)</div>
|
|
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(2)); <span class="comment">// reset_frame_context</span></div>
|
|
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> </div>
|
|
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordflow">if</span> (intra_only) {</div>
|
|
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  RCHECK(ReadSyncCode(&reader));</div>
|
|
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordflow">if</span> (<a class="code" href="../../d5/dd2/classedash__packager_1_1media_1_1VPxParser.html#aeb5310b4c24b3daec6ea9bd0f67aa9a9">codec_config</a>().profile() > 0) {</div>
|
|
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  RCHECK(ReadBitDepthAndColorSpace(&reader, writable_codec_config()));</div>
|
|
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="comment">// NOTE: The intra-only frame header does not include the</span></div>
|
|
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="comment">// specification of either the color format or color sub-sampling in</span></div>
|
|
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="comment">// profile 0. VP9 specifies that the default color format should be</span></div>
|
|
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="comment">// YUV 4:2:0 in this case (normative).</span></div>
|
|
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  writable_codec_config()->set_chroma_subsampling(</div>
|
|
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA);</div>
|
|
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  writable_codec_config()->set_bit_depth(8);</div>
|
|
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  }</div>
|
|
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> </div>
|
|
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(REF_FRAMES)); <span class="comment">// refresh_frame_flags</span></div>
|
|
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  RCHECK(ReadFrameSizes(&reader, &width_, &height_));</div>
|
|
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(REF_FRAMES)); <span class="comment">// refresh_frame_flags</span></div>
|
|
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(REFS_PER_FRAME * (REF_FRAMES_LOG2 + 1)));</div>
|
|
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> </div>
|
|
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="comment">// TODO(kqyang): We may need to actually build the refs to extract the</span></div>
|
|
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="comment">// correct width and height for the current frame. The width will be</span></div>
|
|
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="comment">// used later in ReadTileInfo.</span></div>
|
|
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  RCHECK(ReadFrameSizesWithRefs(&reader, &width_, &height_));</div>
|
|
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> </div>
|
|
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(1)); <span class="comment">// allow_high_precision_mv</span></div>
|
|
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> </div>
|
|
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="keywordtype">bool</span> interp_filter;</div>
|
|
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(1, &interp_filter));</div>
|
|
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="keywordflow">if</span> (!interp_filter)</div>
|
|
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(2)); <span class="comment">// more interp_filter</span></div>
|
|
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  }</div>
|
|
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  }</div>
|
|
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span> </div>
|
|
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="keywordflow">if</span> (!error_resilient_mode) {</div>
|
|
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(1)); <span class="comment">// refresh_frame_context</span></div>
|
|
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(1)); <span class="comment">// frame_parallel_decoding_mode</span></div>
|
|
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  }</div>
|
|
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(FRAME_CONTEXTS_LOG2)); <span class="comment">// frame_context_idx</span></div>
|
|
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> </div>
|
|
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  VLOG(4) << <span class="stringliteral">"bits read before ReadLoopFilter: "</span> << reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a475ab08957dc2e7147b64f307bfc90ab">bit_position</a>();</div>
|
|
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  RCHECK(ReadLoopFilter(&reader));</div>
|
|
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  RCHECK(ReadQuantization(&reader));</div>
|
|
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  RCHECK(ReadSegmentation(&reader));</div>
|
|
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  RCHECK(ReadTileInfo(width_, &reader));</div>
|
|
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> </div>
|
|
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  uint16_t header_size;</div>
|
|
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(16, &header_size));</div>
|
|
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  vpx_frame.uncompressed_header_size =</div>
|
|
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  vpx_frame.frame_size - reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a1409a0968749ca5a55ba823cd718065b">bits_available</a>() / 8;</div>
|
|
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  vpx_frame.width = width_;</div>
|
|
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  vpx_frame.height = height_;</div>
|
|
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span> </div>
|
|
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  VLOG(3) << <span class="stringliteral">"\n frame_size: "</span> << vpx_frame.frame_size</div>
|
|
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  << <span class="stringliteral">"\n uncompressed_header_size: "</span></div>
|
|
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  << vpx_frame.uncompressed_header_size</div>
|
|
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  << <span class="stringliteral">"\n bits read: "</span> << reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a475ab08957dc2e7147b64f307bfc90ab">bit_position</a>()</div>
|
|
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  << <span class="stringliteral">"\n header_size: "</span> << header_size;</div>
|
|
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> </div>
|
|
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  RCHECK(header_size > 0);</div>
|
|
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  RCHECK(header_size * 8 <= reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a1409a0968749ca5a55ba823cd718065b">bits_available</a>());</div>
|
|
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span> </div>
|
|
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  data += vpx_frame.frame_size;</div>
|
|
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  }</div>
|
|
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span> }</div>
|
|
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span> </div>
|
|
<div class="line"><a name="l00534"></a><span class="lineno"><a class="line" href="../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html#a5d09008aa9c80c28111979479307082c"> 534</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html#a5d09008aa9c80c28111979479307082c">VP9Parser::IsKeyframe</a>(<span class="keyword">const</span> uint8_t* data, <span class="keywordtype">size_t</span> data_size) {</div>
|
|
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html">BitReader</a> reader(data, data_size);</div>
|
|
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  uint8_t frame_marker;</div>
|
|
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(2, &frame_marker));</div>
|
|
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  RCHECK(frame_marker == VP9_FRAME_MARKER);</div>
|
|
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span> </div>
|
|
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <a class="code" href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html">VPCodecConfiguration</a> <a class="code" href="../../d5/dd2/classedash__packager_1_1media_1_1VPxParser.html#aeb5310b4c24b3daec6ea9bd0f67aa9a9">codec_config</a>;</div>
|
|
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  RCHECK(ReadProfile(&reader, &codec_config));</div>
|
|
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span> </div>
|
|
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <span class="keywordtype">bool</span> show_existing_frame;</div>
|
|
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(1, &show_existing_frame));</div>
|
|
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keywordflow">if</span> (show_existing_frame)</div>
|
|
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span> </div>
|
|
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordtype">bool</span> is_interframe;</div>
|
|
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">ReadBits</a>(1, &is_interframe));</div>
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<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="keywordflow">if</span> (is_interframe)</div>
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<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00552"></a><span class="lineno"> 552</span> </div>
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<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  RCHECK(reader.<a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">SkipBits</a>(2)); <span class="comment">// show_frame, error_resilient_mode.</span></div>
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<div class="line"><a name="l00554"></a><span class="lineno"> 554</span> </div>
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<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  RCHECK(ReadSyncCode(&reader));</div>
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<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00557"></a><span class="lineno"> 557</span> }</div>
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<div class="line"><a name="l00558"></a><span class="lineno"> 558</span> </div>
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<div class="line"><a name="l00559"></a><span class="lineno"> 559</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00560"></a><span class="lineno"> 560</span> } <span class="comment">// namespace edash_packager</span></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1BitReader_html_a9a66cdd1013eb535e7e1eec60a91bf8c"><div class="ttname"><a href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a9a66cdd1013eb535e7e1eec60a91bf8c">edash_packager::media::BitReader::ReadBits</a></div><div class="ttdeci">bool ReadBits(int 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="classedash__packager_1_1media_1_1BitReader_html_a475ab08957dc2e7147b64f307bfc90ab"><div class="ttname"><a href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a475ab08957dc2e7147b64f307bfc90ab">edash_packager::media::BitReader::bit_position</a></div><div class="ttdeci">int bit_position() const </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/dd3/bit__reader_8h_source.html#l00081">bit_reader.h:81</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1BitReader_html_a1409a0968749ca5a55ba823cd718065b"><div class="ttname"><a href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#a1409a0968749ca5a55ba823cd718065b">edash_packager::media::BitReader::bits_available</a></div><div class="ttdeci">int bits_available() const </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/dd3/bit__reader_8h_source.html#l00076">bit_reader.h:76</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1BitReader_html"><div class="ttname"><a href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html">edash_packager::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="classedash__packager_1_1media_1_1BitReader_html_acacb97d71aaae01796b90d27e7cdca0a"><div class="ttname"><a href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html#acacb97d71aaae01796b90d27e7cdca0a">edash_packager::media::BitReader::SkipBits</a></div><div class="ttdeci">bool SkipBits(int 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="classedash__packager_1_1media_1_1VPxParser_html_aeb5310b4c24b3daec6ea9bd0f67aa9a9"><div class="ttname"><a href="../../d5/dd2/classedash__packager_1_1media_1_1VPxParser.html#aeb5310b4c24b3daec6ea9bd0f67aa9a9">edash_packager::media::VPxParser::codec_config</a></div><div class="ttdeci">const VPCodecConfiguration & codec_config() const </div><div class="ttdef"><b>Definition:</b> <a href="../../df/d8a/vpx__parser_8h_source.html#l00044">vpx_parser.h:44</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1VP9Parser_html_a5d09008aa9c80c28111979479307082c"><div class="ttname"><a href="../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html#a5d09008aa9c80c28111979479307082c">edash_packager::media::VP9Parser::IsKeyframe</a></div><div class="ttdeci">static bool IsKeyframe(const uint8_t *data, size_t data_size)</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d8a/vp9__parser_8cc_source.html#l00534">vp9_parser.cc:534</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1VPCodecConfiguration_html"><div class="ttname"><a href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html">edash_packager::media::VPCodecConfiguration</a></div><div class="ttdoc">Class for parsing or writing VP codec configuration data. </div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d73/vp__codec__configuration_8h_source.html#l00021">vp_codec_configuration.h:21</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1VP9Parser_html_a8b997dee438daade536e8ea189d110ed"><div class="ttname"><a href="../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html#a8b997dee438daade536e8ea189d110ed">edash_packager::media::VP9Parser::Parse</a></div><div class="ttdeci">bool Parse(const uint8_t *data, size_t data_size, std::vector< VPxFrameInfo > *vpx_frames) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d8a/vp9__parser_8cc_source.html#l00417">vp9_parser.cc:417</a></div></div>
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