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<div class="title">single_segment_segmenter.cc</div> </div>
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<div class="contents">
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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/media/formats/mp4/single_segment_segmenter.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 <inttypes.h></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <openssl/err.h></span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <openssl/rand.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="preprocessor">#include "packager/base/files/file_util.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/base/strings/stringprintf.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/base/threading/platform_thread.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "packager/base/time/time.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "packager/media/base/buffer_writer.h"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "packager/media/base/media_stream.h"</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "packager/media/base/muxer_options.h"</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "packager/media/event/muxer_listener.h"</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "packager/media/event/progress_listener.h"</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "packager/media/file/file.h"</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "packager/media/formats/mp4/box_definitions.h"</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">namespace </span>edash_packager {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">namespace </span>mp4 {</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// Create a temp file name using process/thread id and current time.</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> std::string TempFileName() {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  int32_t tid = <span class="keyword">static_cast<</span>int32_t<span class="keyword">></span>(base::PlatformThread::CurrentId());</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  int64_t rand = 0;</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">if</span> (RAND_bytes(reinterpret_cast<uint8_t*>(&rand), <span class="keyword">sizeof</span>(rand)) != 1) {</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  LOG(WARNING) << <span class="stringliteral">"RAND_bytes failed with error: "</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  << ERR_error_string(ERR_get_error(), NULL);</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  rand = base::Time::Now().ToInternalValue();</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="keywordflow">return</span> base::StringPrintf(<span class="stringliteral">"packager-tempfile-%x-%"</span> PRIx64, tid, rand);</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> }</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> } <span class="comment">// namespace</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> SingleSegmentSegmenter::SingleSegmentSegmenter(<span class="keyword">const</span> MuxerOptions& options,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  scoped_ptr<FileType> ftyp,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  scoped_ptr<Movie> moov)</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  : Segmenter(options, ftyp.Pass(), moov.Pass()) {}</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> SingleSegmentSegmenter::~SingleSegmentSegmenter() {</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span> (temp_file_)</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  temp_file_.release()->Close();</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">if</span> (!temp_file_name_.empty()) {</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#a7e0fcd3c439e810e8e17baf32dcc75af">File::Delete</a>(temp_file_name_.c_str()))</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  LOG(ERROR) << <span class="stringliteral">"Unable to delete temporary file "</span> << temp_file_name_;</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  }</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> }</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
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<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="../../da/d75/classedash__packager_1_1media_1_1mp4_1_1SingleSegmentSegmenter.html#aab8ffe19fcdd8688e9685264ad10fa60"> 56</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../da/d75/classedash__packager_1_1media_1_1mp4_1_1SingleSegmentSegmenter.html#aab8ffe19fcdd8688e9685264ad10fa60">SingleSegmentSegmenter::GetInitRange</a>(<span class="keywordtype">size_t</span>* offset, <span class="keywordtype">size_t</span>* size) {</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// In Finalize, ftyp and moov gets written first so offset must be 0.</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  *offset = 0;</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  *size = ftyp()-><a class="code" href="../../d1/dcd/structedash__packager_1_1media_1_1mp4_1_1FileType.html#a9a35918ae9926d5a8de62de3fe3e4633">ComputeSize</a>() + moov()-><a class="code" href="../../d6/dec/structedash__packager_1_1media_1_1mp4_1_1Movie.html#aa985dd14863b1bb4803e4a3a44052c32">ComputeSize</a>();</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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"><a class="line" href="../../da/d75/classedash__packager_1_1media_1_1mp4_1_1SingleSegmentSegmenter.html#a2e799317de70044cdd95e5406e1e2510"> 63</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../da/d75/classedash__packager_1_1media_1_1mp4_1_1SingleSegmentSegmenter.html#a2e799317de70044cdd95e5406e1e2510">SingleSegmentSegmenter::GetIndexRange</a>(<span class="keywordtype">size_t</span>* offset, <span class="keywordtype">size_t</span>* size) {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// Index range is right after init range so the offset must be the size of</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// ftyp and moov.</span></div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  *offset = ftyp()-><a class="code" href="../../d1/dcd/structedash__packager_1_1media_1_1mp4_1_1FileType.html#a9a35918ae9926d5a8de62de3fe3e4633">ComputeSize</a>() + moov()-><a class="code" href="../../d6/dec/structedash__packager_1_1media_1_1mp4_1_1Movie.html#aa985dd14863b1bb4803e4a3a44052c32">ComputeSize</a>();</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  *size = vod_sidx_->ComputeSize();</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> }</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> SingleSegmentSegmenter::DoInitialize() {</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// Single segment segmentation involves two stages:</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// Stage 1: Create media subsegments from media samples</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// Stage 2: Update media header (moov) which involves copying of media</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// subsegments</span></div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// Assumes stage 2 takes similar amount of time as stage 1. The previous</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// progress_target was set for stage 1. Times two to account for stage 2.</span></div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  set_progress_target(progress_target() * 2);</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">if</span> (options().temp_dir.empty()) {</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  base::FilePath temp_file_path;</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">if</span> (!base::CreateTemporaryFile(&temp_file_path)) {</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  LOG(ERROR) << <span class="stringliteral">"Failed to create temporary file."</span>;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">return</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a>(error::FILE_FAILURE, <span class="stringliteral">"Unable to create temporary file."</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>  temp_file_name_ = temp_file_path.value();</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  temp_file_name_ =</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  base::FilePath(options().temp_dir).Append(TempFileName()).value();</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>  temp_file_.reset(<a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#a0933ccd7df76fcf8fbcfe12c15dbf6c5">File::Open</a>(temp_file_name_.c_str(), <span class="stringliteral">"w"</span>));</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">return</span> temp_file_</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  ? Status::OK</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  : Status(error::FILE_FAILURE,</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="stringliteral">"Cannot open file to write "</span> + temp_file_name_);</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> }</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> Status SingleSegmentSegmenter::DoFinalize() {</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  DCHECK(temp_file_);</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  DCHECK(ftyp());</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  DCHECK(moov());</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  DCHECK(vod_sidx_);</div>
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|
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
|
|
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// Close the temp file to prepare for reading later.</span></div>
|
|
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (!temp_file_.release()->Close()) {</div>
|
|
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">return</span> Status(error::FILE_FAILURE,</div>
|
|
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="stringliteral">"Cannot close the temp file "</span> + temp_file_name_);</div>
|
|
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div>
|
|
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
|
|
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  scoped_ptr<File, FileCloser> file(</div>
|
|
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#a0933ccd7df76fcf8fbcfe12c15dbf6c5">File::Open</a>(options().output_file_name.c_str(), <span class="stringliteral">"w"</span>));</div>
|
|
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">if</span> (file == NULL) {</div>
|
|
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">return</span> Status(error::FILE_FAILURE,</div>
|
|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="stringliteral">"Cannot open file to write "</span> + options().output_file_name);</div>
|
|
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div>
|
|
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
|
|
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  LOG(INFO) << <span class="stringliteral">"Update media header (moov) and rewrite the file to '"</span></div>
|
|
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  << options().<a class="code" href="../../de/d57/structedash__packager_1_1media_1_1MuxerOptions.html#addd401a47b287f3c18cbdc4bfa1a6963">output_file_name</a> << <span class="stringliteral">"'."</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>  <span class="comment">// Write ftyp, moov and sidx to output file.</span></div>
|
|
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  scoped_ptr<BufferWriter> buffer(<span class="keyword">new</span> BufferWriter());</div>
|
|
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  ftyp()-><a class="code" href="../../d7/d8a/structedash__packager_1_1media_1_1mp4_1_1Box.html#aa7a756828b5514fcd3eaf16d86c413c0">Write</a>(buffer.get());</div>
|
|
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  moov()-><a class="code" href="../../d7/d8a/structedash__packager_1_1media_1_1mp4_1_1Box.html#aa7a756828b5514fcd3eaf16d86c413c0">Write</a>(buffer.get());</div>
|
|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  vod_sidx_->Write(buffer.get());</div>
|
|
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  Status status = buffer->WriteToFile(file.get());</div>
|
|
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span> (!status.ok())</div>
|
|
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span> status;</div>
|
|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div>
|
|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="comment">// Load the temp file and write to output file.</span></div>
|
|
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  scoped_ptr<File, FileCloser> temp_file(</div>
|
|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#a0933ccd7df76fcf8fbcfe12c15dbf6c5">File::Open</a>(temp_file_name_.c_str(), <span class="stringliteral">"r"</span>));</div>
|
|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">if</span> (temp_file == NULL) {</div>
|
|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">return</span> Status(error::FILE_FAILURE,</div>
|
|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="stringliteral">"Cannot open file to read "</span> + temp_file_name_);</div>
|
|
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div>
|
|
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
|
|
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">// The target of 2nd stage of single segment segmentation.</span></div>
|
|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">const</span> uint64_t re_segment_progress_target = progress_target() * 0.5;</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="keyword">const</span> <span class="keywordtype">int</span> kBufSize = 0x200000; <span class="comment">// 2MB.</span></div>
|
|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  scoped_ptr<uint8_t[]> buf(<span class="keyword">new</span> uint8_t[kBufSize]);</div>
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  int64_t size = temp_file->Read(buf.get(), kBufSize);</div>
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (size == 0) {</div>
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (size < 0) {</div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">return</span> Status(error::FILE_FAILURE,</div>
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="stringliteral">"Failed to read file "</span> + temp_file_name_);</div>
|
|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  }</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  int64_t size_written = file->Write(buf.get(), size);</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">if</span> (size_written != size) {</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">return</span> Status(error::FILE_FAILURE,</div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="stringliteral">"Failed to write file "</span> + options().output_file_name);</div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  }</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <a class="code" href="../../dc/de1/classedash__packager_1_1media_1_1mp4_1_1Segmenter.html#a287d51571c92704274550d9f1d246cf9">UpdateProgress</a>(static_cast<double>(size) / temp_file->Size() *</div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  re_segment_progress_target);</div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <a class="code" href="../../dc/de1/classedash__packager_1_1media_1_1mp4_1_1Segmenter.html#a4e58a007d4daafe1b49a70d39e52e339">SetComplete</a>();</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> }</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> Status SingleSegmentSegmenter::DoFinalizeSegment() {</div>
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  DCHECK(sidx());</div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  DCHECK(fragment_buffer());</div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">// sidx() contains pre-generated segment references with one reference per</span></div>
|
|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// fragment. In VOD, this segment is converted into a subsegment, i.e. one</span></div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="comment">// reference, which contains all the fragments in sidx().</span></div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  std::vector<SegmentReference>& refs = sidx()->references;</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  SegmentReference& vod_ref = refs[0];</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  uint64_t first_sap_time =</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  refs[0].sap_delta_time + refs[0].earliest_presentation_time;</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">for</span> (uint32_t i = 1; i < refs.size(); ++i) {</div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  vod_ref.referenced_size += refs[i].referenced_size;</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">// NOTE: We calculate subsegment duration based on the total duration of</span></div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// this subsegment instead of subtracting earliest_presentation_time as</span></div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// indicated in the spec.</span></div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  vod_ref.subsegment_duration += refs[i].subsegment_duration;</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  vod_ref.earliest_presentation_time = std::min(</div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  vod_ref.earliest_presentation_time, refs[i].earliest_presentation_time);</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">if</span> (vod_ref.sap_type == SegmentReference::TypeUnknown &&</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  refs[i].sap_type != SegmentReference::TypeUnknown) {</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  vod_ref.sap_type = refs[i].sap_type;</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  first_sap_time =</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  refs[i].sap_delta_time + refs[i].earliest_presentation_time;</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>  <span class="comment">// Calculate sap delta time w.r.t. earliest_presentation_time.</span></div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">if</span> (vod_ref.sap_type != SegmentReference::TypeUnknown) {</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  vod_ref.sap_delta_time =</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  first_sap_time - vod_ref.earliest_presentation_time;</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  }</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="comment">// Create segment if it does not exist yet.</span></div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">if</span> (vod_sidx_ == NULL) {</div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  vod_sidx_.reset(<span class="keyword">new</span> SegmentIndex());</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  vod_sidx_->reference_id = sidx()->reference_id;</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  vod_sidx_->timescale = sidx()->timescale;</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">if</span> (vod_ref.earliest_presentation_time > 0) {</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> starting_time_in_seconds =</div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(vod_ref.earliest_presentation_time) /</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  GetReferenceTimeScale();</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// Give a warning if it is significant.</span></div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">if</span> (starting_time_in_seconds > 0.5) {</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="comment">// Note that DASH IF player requires presentationTimeOffset to be set in</span></div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">// Segment{Base,List,Template} if there is non-zero starting time. Since</span></div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="comment">// current Chromium's MSE implementation uses DTS, the player expects</span></div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="comment">// DTS to be used.</span></div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  LOG(WARNING) << <span class="stringliteral">"Warning! Non-zero starting time (in seconds): "</span></div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  << starting_time_in_seconds</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  << <span class="stringliteral">". Manual adjustment of presentationTimeOffset in "</span></div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="stringliteral">"mpd might be necessary."</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>  <span class="comment">// Force earliest_presentation_time to start from 0 for VOD.</span></div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  vod_sidx_->earliest_presentation_time = 0;</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>  vod_sidx_->references.push_back(vod_ref);</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="comment">// Append fragment buffer to temp file.</span></div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordtype">size_t</span> segment_size = fragment_buffer()->Size();</div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  Status status = fragment_buffer()-><a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#aa83fe945386e5a75d3c377904fdddce2">WriteToFile</a>(temp_file_.get());</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">if</span> (!status.ok()) <span class="keywordflow">return</span> status;</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="../../dc/de1/classedash__packager_1_1media_1_1mp4_1_1Segmenter.html#a287d51571c92704274550d9f1d246cf9">UpdateProgress</a>(vod_ref.subsegment_duration);</div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">if</span> (muxer_listener()) {</div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  muxer_listener()-><a class="code" href="../../df/de7/classedash__packager_1_1media_1_1MuxerListener.html#a5626ff553138db438c561db2ca0d05f2">OnSampleDurationReady</a>(<a class="code" href="../../dc/de1/classedash__packager_1_1media_1_1mp4_1_1Segmenter.html#ac2883a5eb0bd7abb50bc3968ac417901">sample_duration</a>());</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  muxer_listener()->OnNewSegment(vod_ref.earliest_presentation_time,</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  vod_ref.subsegment_duration, segment_size);</div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  }</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> }</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> } <span class="comment">// namespace mp4</span></div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> } <span class="comment">// namespace media</span></div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> } <span class="comment">// namespace edash_packager</span></div>
|
|
<div class="ttc" id="structedash__packager_1_1media_1_1MuxerOptions_html_addd401a47b287f3c18cbdc4bfa1a6963"><div class="ttname"><a href="../../de/d57/structedash__packager_1_1media_1_1MuxerOptions.html#addd401a47b287f3c18cbdc4bfa1a6963">edash_packager::media::MuxerOptions::output_file_name</a></div><div class="ttdeci">std::string output_file_name</div><div class="ttdef"><b>Definition:</b> <a href="../../d0/d0e/muxer__options_8h_source.html#l00055">muxer_options.h:55</a></div></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1SingleSegmentSegmenter_html_aab8ffe19fcdd8688e9685264ad10fa60"><div class="ttname"><a href="../../da/d75/classedash__packager_1_1media_1_1mp4_1_1SingleSegmentSegmenter.html#aab8ffe19fcdd8688e9685264ad10fa60">edash_packager::media::mp4::SingleSegmentSegmenter::GetInitRange</a></div><div class="ttdeci">bool GetInitRange(size_t *offset, size_t *size) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d37/single__segment__segmenter_8cc_source.html#l00056">single_segment_segmenter.cc:56</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1File_html_a7e0fcd3c439e810e8e17baf32dcc75af"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html#a7e0fcd3c439e810e8e17baf32dcc75af">edash_packager::media::File::Delete</a></div><div class="ttdeci">static bool Delete(const char *file_name)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/dfc/file_8cc_source.html#l00138">file.cc:138</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1File_html_a0933ccd7df76fcf8fbcfe12c15dbf6c5"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html#a0933ccd7df76fcf8fbcfe12c15dbf6c5">edash_packager::media::File::Open</a></div><div class="ttdeci">virtual bool Open()=0</div><div class="ttdoc">Internal open. Should not be used directly. </div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1Status_html"><div class="ttname"><a href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">edash_packager::media::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00076">status.h:76</a></div></div>
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<div class="ttc" id="structedash__packager_1_1media_1_1mp4_1_1Movie_html_aa985dd14863b1bb4803e4a3a44052c32"><div class="ttname"><a href="../../d6/dec/structedash__packager_1_1media_1_1mp4_1_1Movie.html#aa985dd14863b1bb4803e4a3a44052c32">edash_packager::media::mp4::Movie::ComputeSize</a></div><div class="ttdeci">uint32_t ComputeSize() override</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dee/box__definitions_8cc_source.html#l01460">box_definitions.cc:1460</a></div></div>
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<div class="ttc" id="structedash__packager_1_1media_1_1mp4_1_1FileType_html_a9a35918ae9926d5a8de62de3fe3e4633"><div class="ttname"><a href="../../d1/dcd/structedash__packager_1_1media_1_1mp4_1_1FileType.html#a9a35918ae9926d5a8de62de3fe3e4633">edash_packager::media::mp4::FileType::ComputeSize</a></div><div class="ttdeci">uint32_t ComputeSize() override</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dee/box__definitions_8cc_source.html#l00089">box_definitions.cc:89</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1BufferWriter_html_aa83fe945386e5a75d3c377904fdddce2"><div class="ttname"><a href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#aa83fe945386e5a75d3c377904fdddce2">edash_packager::media::BufferWriter::WriteToFile</a></div><div class="ttdeci">Status WriteToFile(File *file)</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd3/buffer__writer_8cc_source.html#l00065">buffer_writer.cc:65</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1SingleSegmentSegmenter_html_a2e799317de70044cdd95e5406e1e2510"><div class="ttname"><a href="../../da/d75/classedash__packager_1_1media_1_1mp4_1_1SingleSegmentSegmenter.html#a2e799317de70044cdd95e5406e1e2510">edash_packager::media::mp4::SingleSegmentSegmenter::GetIndexRange</a></div><div class="ttdeci">bool GetIndexRange(size_t *offset, size_t *size) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d37/single__segment__segmenter_8cc_source.html#l00063">single_segment_segmenter.cc:63</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Segmenter_html_ac2883a5eb0bd7abb50bc3968ac417901"><div class="ttname"><a href="../../dc/de1/classedash__packager_1_1media_1_1mp4_1_1Segmenter.html#ac2883a5eb0bd7abb50bc3968ac417901">edash_packager::media::mp4::Segmenter::sample_duration</a></div><div class="ttdeci">uint32_t sample_duration() const </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/dd4/segmenter_8h_source.html#l00101">segmenter.h:101</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Segmenter_html_a287d51571c92704274550d9f1d246cf9"><div class="ttname"><a href="../../dc/de1/classedash__packager_1_1media_1_1mp4_1_1Segmenter.html#a287d51571c92704274550d9f1d246cf9">edash_packager::media::mp4::Segmenter::UpdateProgress</a></div><div class="ttdeci">void UpdateProgress(uint64_t progress)</div><div class="ttdoc">Update segmentation progress using ProgressListener. </div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d08/segmenter_8cc_source.html#l00333">segmenter.cc:333</a></div></div>
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<div class="ttc" id="structedash__packager_1_1media_1_1mp4_1_1Box_html_aa7a756828b5514fcd3eaf16d86c413c0"><div class="ttname"><a href="../../d7/d8a/structedash__packager_1_1media_1_1mp4_1_1Box.html#aa7a756828b5514fcd3eaf16d86c413c0">edash_packager::media::mp4::Box::Write</a></div><div class="ttdeci">void Write(BufferWriter *writer)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00025">box.cc:25</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Segmenter_html_a4e58a007d4daafe1b49a70d39e52e339"><div class="ttname"><a href="../../dc/de1/classedash__packager_1_1media_1_1mp4_1_1Segmenter.html#a4e58a007d4daafe1b49a70d39e52e339">edash_packager::media::mp4::Segmenter::SetComplete</a></div><div class="ttdeci">void SetComplete()</div><div class="ttdoc">Set progress to 100%. </div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d08/segmenter_8cc_source.html#l00349">segmenter.cc:349</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1MuxerListener_html_a5626ff553138db438c561db2ca0d05f2"><div class="ttname"><a href="../../df/de7/classedash__packager_1_1media_1_1MuxerListener.html#a5626ff553138db438c561db2ca0d05f2">edash_packager::media::MuxerListener::OnSampleDurationReady</a></div><div class="ttdeci">virtual void OnSampleDurationReady(uint32_t sample_duration)=0</div></div>
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