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<li class="navelem"><a class="el" href="../../dir_3f8eec2fc361645de4b1ec14c19fffc7.html">packager</a></li><li class="navelem"><a class="el" href="../../dir_f99dae54fe7170f791f339b952d5067a.html">media</a></li><li class="navelem"><a class="el" href="../../dir_375ba2cfd8fd5b05c50b92d996b9d386.html">formats</a></li><li class="navelem"><a class="el" href="../../dir_51a7c7233efd277e3898c7f3689e7b5b.html">dvb</a></li> </ul>
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<div class="title">subtitle_composer.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 2020 Google LLC. 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/formats/dvb/subtitle_composer.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 <png.h></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <string.h></span></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="preprocessor">#include "packager/base/logging.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</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="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>{</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> uint16_t kDefaultWidth = 720;</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">const</span> uint16_t kDefaultHeight = 576;</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">const</span> RgbaColor kTransparent{0, 0, 0, 0};</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">struct </span>PngFreeHelper {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  PngFreeHelper(png_structp* png, png_infop* info) : png(png), info(info) {}</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  ~PngFreeHelper() { png_destroy_write_struct(png, info); }</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  png_structp* png;</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  png_infop* info;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> };</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keywordtype">void</span> PngWriteData(png_structp png, png_bytep data, png_size_t length) {</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">auto</span>* output = <span class="keyword">reinterpret_cast<</span>std::vector<uint8_t>*<span class="keyword">></span>(png_get_io_ptr(png));</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  output->insert(output->end(), data, data + length);</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>  </div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keywordtype">void</span> PngFlushData(png_structp png) {}</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="keywordtype">bool</span> IsTransparent(<span class="keyword">const</span> RgbaColor* colors, uint16_t width, uint16_t height) {</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < static_cast<size_t>(width) * height; i++) {</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">if</span> (colors[i].a != 0)</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  }</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  </div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keywordtype">bool</span> GetImageData(<span class="keyword">const</span> DvbImageBuilder* image,</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  std::vector<uint8_t>* data,</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  uint16_t* width,</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  uint16_t* height) {</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">// CAREFUL in this method since this uses long-jumps. A long-jump causes the</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="comment">// execution to jump to another point *without executing returns*. This</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// causes C++ objects to not get destroyed. This also causes the same code to</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// be executed twice, so C++ objects can be initialized twice.</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">// So long as we don't create C++ objects after the long-jump point,</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="comment">// everything should work fine. If we early-return after the long-jump, the</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// destructors will still be called; if we long-jump, we won't call the</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">// constructors since we're past that point.</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">auto</span> png =</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  png_create_write_struct(PNG_LIBPNG_VER_STRING, <span class="keyword">nullptr</span>, <span class="keyword">nullptr</span>, <span class="keyword">nullptr</span>);</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">auto</span> info = png_create_info_struct(png);</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  PngFreeHelper helper(&png, &info);</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (!png || !info) {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  LOG(ERROR) << <span class="stringliteral">"Error creating libpng struct"</span>;</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (setjmp(png_jmpbuf(png))) {</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// If any png_* functions fail, the code will jump back to here.</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  LOG(ERROR) << <span class="stringliteral">"Error writing PNG image"</span>;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  png_set_write_fn(png, data, &PngWriteData, &PngFlushData);</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">const</span> RgbaColor* pixels;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">if</span> (!image->GetPixels(&pixels, width, height))</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">if</span> (IsTransparent(pixels, *width, *height))</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// Skip empty/transparent images.</span></div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  png_set_IHDR(png, info, *width, *height, 8, PNG_COLOR_TYPE_RGBA,</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE,</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  PNG_FILTER_TYPE_BASE);</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  png_write_info(png, info);</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  </div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">const</span> uint8_t* in_data = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>uint8_t*<span class="keyword">></span>(pixels);</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> y = 0; y < *height; y++) {</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">size_t</span> offset = image->max_width() * y * <span class="keyword">sizeof</span>(RgbaColor);</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  png_write_row(png, in_data + offset);</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  }</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  png_write_end(png, <span class="keyword">nullptr</span>);</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  </div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> }</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> } <span class="comment">// namespace</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  </div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> SubtitleComposer::SubtitleComposer()</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  : display_width_(kDefaultWidth), display_height_(kDefaultHeight) {}</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> SubtitleComposer::~SubtitleComposer() {}</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="keywordtype">void</span> SubtitleComposer::SetDisplaySize(uint16_t width, uint16_t height) {</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  display_width_ = width;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  display_height_ = height;</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> }</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> <span class="keywordtype">bool</span> SubtitleComposer::SetRegionInfo(uint8_t region_id,</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  uint8_t color_space_id,</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  uint16_t width,</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  uint16_t height) {</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">auto</span>* region = &regions_[region_id];</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">if</span> (region->x + width > display_width_ ||</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  region->y + height > display_height_) {</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  LOG(ERROR) << <span class="stringliteral">"DVB-sub region won't fit within display"</span>;</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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> (width == 0 || height == 0) {</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  LOG(ERROR) << <span class="stringliteral">"DVB-sub width/height cannot be 0"</span>;</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  </div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  region->width = width;</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  region->height = height;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  region->color_space = &color_spaces_[color_space_id];</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> }</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keywordtype">bool</span> SubtitleComposer::SetRegionPosition(uint8_t region_id,</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  uint16_t x,</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  uint16_t y) {</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">auto</span>* region = &regions_[region_id];</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">if</span> (x + region->width > display_width_ ||</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  y + region->height > display_height_) {</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  LOG(ERROR) << <span class="stringliteral">"DVB-sub region won't fit within display"</span>;</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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>  </div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  region->x = x;</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  region->y = y;</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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>  </div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="keywordtype">bool</span> SubtitleComposer::SetObjectInfo(uint16_t object_id,</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  uint8_t region_id,</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  uint16_t x,</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  uint16_t y,</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordtype">int</span> default_color_code) {</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">auto</span> region = regions_.find(region_id);</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">if</span> (region == regions_.end()) {</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  LOG(ERROR) << <span class="stringliteral">"Unknown DVB-sub region: "</span> << (int)region_id</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  << <span class="stringliteral">", in object: "</span> << object_id;</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">false</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>  <span class="keywordflow">if</span> (x >= region->second.width || y >= region->second.height) {</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  LOG(ERROR) << <span class="stringliteral">"DVB-sub object is outside region: "</span> << object_id;</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  }</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  </div>
|
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keyword">auto</span>* <span class="keywordtype">object</span> = &objects_[object_id];</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordtype">object</span>->region = &region->second;</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordtype">object</span>->default_color_code = default_color_code;</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordtype">object</span>->x = x;</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordtype">object</span>->y = y;</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> }</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> DvbImageColorSpace* SubtitleComposer::GetColorSpace(uint8_t color_space_id) {</div>
|
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">return</span> &color_spaces_[color_space_id];</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> }</div>
|
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  </div>
|
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> DvbImageColorSpace* SubtitleComposer::GetColorSpaceForObject(</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  uint16_t object_id) {</div>
|
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">auto</span> info = objects_.find(object_id);</div>
|
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">if</span> (info == objects_.end()) {</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  LOG(ERROR) << <span class="stringliteral">"Unknown DVB-sub object: "</span> << object_id;</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
|
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  }</div>
|
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">return</span> info->second.region->color_space;</div>
|
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> }</div>
|
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  </div>
|
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> DvbImageBuilder* SubtitleComposer::GetObjectImage(uint16_t object_id) {</div>
|
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">auto</span> it = images_.find(object_id);</div>
|
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">if</span> (it == images_.end()) {</div>
|
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keyword">auto</span> info = objects_.find(object_id);</div>
|
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">if</span> (info == objects_.end()) {</div>
|
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  LOG(ERROR) << <span class="stringliteral">"Unknown DVB-sub object: "</span> << object_id;</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</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>  <span class="keyword">auto</span> color = info->second.default_color_code < 0</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  ? kTransparent</div>
|
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  : info->second.region->color_space->GetColor(</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  BitDepth::k8Bit, info->second.default_color_code);</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  it = images_</div>
|
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  .emplace(std::piecewise_construct, std::make_tuple(object_id),</div>
|
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  std::make_tuple(</div>
|
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  info->second.region->color_space, color,</div>
|
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  info->second.region->width - info->second.region->x,</div>
|
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  info->second.region->height - info->second.region->y))</div>
|
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  .first;</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">return</span> &it->second;</div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> }</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  </div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="keywordtype">bool</span> SubtitleComposer::GetSamples(</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  int64_t start,</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  int64_t end,</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  std::vector<std::shared_ptr<TextSample>>* samples)<span class="keyword"> const </span>{</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& pair : objects_) {</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">auto</span> it = images_.find(pair.first);</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">if</span> (it == images_.end()) {</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  LOG(WARNING) << <span class="stringliteral">"DVB-sub object "</span> << pair.first</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  << <span class="stringliteral">" doesn't include object data"</span>;</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  </div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  uint16_t width, height;</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  std::vector<uint8_t> image_data;</div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span> (!GetImageData(&it->second, &image_data, &width, &height))</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">if</span> (image_data.empty()) {</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  VLOG(1) << <span class="stringliteral">"Skipping transparent object"</span>;</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  }</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  TextFragment body({}, image_data);</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  DCHECK_LE(width, display_width_);</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  DCHECK_LE(height, display_height_);</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>  TextSettings settings;</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  settings.position.emplace(</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  (pair.second.x + pair.second.region->x) * 100.0f / display_width_,</div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  TextUnitType::kPercent);</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  settings.line.emplace(</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  (pair.second.y + pair.second.region->y) * 100.0f / display_height_,</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  TextUnitType::kPercent);</div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  settings.width.emplace(width * 100.0f / display_width_,</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  TextUnitType::kPercent);</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  settings.height.emplace(height * 100.0f / display_height_,</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  TextUnitType::kPercent);</div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  </div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  samples->emplace_back(</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  std::make_shared<TextSample>(<span class="stringliteral">""</span>, start, end, settings, body));</div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  }</div>
|
|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  </div>
|
|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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>  </div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="keywordtype">void</span> SubtitleComposer::ClearObjects() {</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  regions_.clear();</div>
|
|
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  objects_.clear();</div>
|
|
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  images_.clear();</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> }</div>
|
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  </div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> } <span class="comment">// namespace media</span></div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> } <span class="comment">// namespace shaka</span></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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