207 lines
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<div class="title">mpd_generator.cc</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2014 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/app/mpd_generator_flags.h"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "packager/app/vlog_flags.h"</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "packager/base/at_exit.h"</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "packager/base/command_line.h"</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/base/strings/string_split.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/base/strings/stringprintf.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/mpd/util/mpd_writer.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/version/version.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>shaka {</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kUsage[] =</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="stringliteral">"MPD generation driver program.\n"</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="stringliteral">"This program accepts MediaInfo files in human readable text "</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="stringliteral">"format and outputs an MPD.\n"</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="stringliteral">"The main use case for this is to output MPD for VOD.\n"</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="stringliteral">"Limitations:\n"</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="stringliteral">" Each MediaInfo can only have one of VideoInfo, AudioInfo, or TextInfo.\n"</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="stringliteral">" There will be at most 3 AdaptationSets in the MPD, i.e. 1 video, 1 "</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="stringliteral">"audio, and 1 text.\n"</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="stringliteral">"Sample Usage:\n"</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="stringliteral">"%s --input=\"video1.media_info,video2.media_info,audio1.media_info\" "</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="stringliteral">"--output=\"video_audio.mpd\""</span>;</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">enum</span> ExitStatus {</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  kSuccess = 0,</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  kEmptyInputError,</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  kEmptyOutputError,</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  kFailedToWriteMpdToFileError</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> };</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> ExitStatus CheckRequiredFlags() {</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">if</span> (FLAGS_input.empty()) {</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  LOG(ERROR) << <span class="stringliteral">"--input is required."</span>;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">return</span> kEmptyInputError;</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  }</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span> (FLAGS_output.empty()) {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  LOG(ERROR) << <span class="stringliteral">"--output is required."</span>;</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">return</span> kEmptyOutputError;</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> </div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> kSuccess;</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> ExitStatus RunMpdGenerator() {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  DCHECK_EQ(CheckRequiredFlags(), kSuccess);</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  std::vector<std::string> base_urls;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  std::vector<std::string> input_files;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">typedef</span> std::vector<std::string>::const_iterator Iterator;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  base::SplitString(FLAGS_input, <span class="charliteral">','</span>, &input_files);</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (!FLAGS_base_urls.empty()) {</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  base::SplitString(FLAGS_base_urls, <span class="charliteral">','</span>, &base_urls);</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  MpdWriter mpd_writer;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">for</span> (Iterator it = base_urls.begin(); it != base_urls.end(); ++it)</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  mpd_writer.AddBaseUrl(*it);</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>  <span class="keywordflow">for</span> (Iterator it = input_files.begin(); it != input_files.end(); ++it) {</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">if</span> (!mpd_writer.AddFile(it->c_str(), FLAGS_output)) {</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  LOG(WARNING) << <span class="stringliteral">"MpdWriter failed to read "</span> << *it << <span class="stringliteral">", skipping."</span>;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">if</span> (!mpd_writer.WriteMpdToFile(FLAGS_output.c_str())) {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  LOG(ERROR) << <span class="stringliteral">"Failed to write MPD to "</span> << FLAGS_output;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">return</span> kFailedToWriteMpdToFileError;</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> kSuccess;</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> }</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="keywordtype">int</span> MpdMain(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>** argv) {</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  base::AtExitManager exit;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// Needed to enable VLOG/DVLOG through --vmodule or --v.</span></div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  base::CommandLine::Init(argc, argv);</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  CHECK(logging::InitLogging(logging::LoggingSettings()));</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>  google::SetUsageMessage(base::StringPrintf(kUsage, argv[0]));</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  google::ParseCommandLineFlags(&argc, &argv, <span class="keyword">true</span>);</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  ExitStatus status = CheckRequiredFlags();</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span> (status != kSuccess) {</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">const</span> std::string version_string = base::StringPrintf(</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="stringliteral">"mpd_generator version %s"</span>, GetPackagerVersion().c_str());</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  google::ShowUsageWithFlags(version_string.c_str());</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> status;</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> </div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">return</span> RunMpdGenerator();</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="comment">// namespace</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> } <span class="comment">// namespace shaka</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">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>** argv) {</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> shaka::MpdMain(argc, argv);</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> }</div>
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