312 lines
41 KiB
HTML
312 lines
41 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
||
<html xmlns="http://www.w3.org/1999/xhtml">
|
||
<head>
|
||
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
|
||
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
|
||
<meta name="generator" content="Doxygen 1.8.6"/>
|
||
<title>DASH Media Packaging SDK: media/formats/mp4/multi_segment_segmenter.cc Source File</title>
|
||
<link href="../../tabs.css" rel="stylesheet" type="text/css"/>
|
||
<script type="text/javascript" src="../../jquery.js"></script>
|
||
<script type="text/javascript" src="../../dynsections.js"></script>
|
||
<link href="../../search/search.css" rel="stylesheet" type="text/css"/>
|
||
<script type="text/javascript" src="../../search/search.js"></script>
|
||
<script type="text/javascript">
|
||
$(document).ready(function() { searchBox.OnSelectItem(0); });
|
||
</script>
|
||
<link href="../../doxygen.css" rel="stylesheet" type="text/css" />
|
||
</head>
|
||
<body>
|
||
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
|
||
<div id="titlearea">
|
||
<table cellspacing="0" cellpadding="0">
|
||
<tbody>
|
||
<tr style="height: 56px;">
|
||
<td style="padding-left: 0.5em;">
|
||
<div id="projectname">DASH Media Packaging SDK
|
||
</div>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</div>
|
||
<!-- end header part -->
|
||
<!-- Generated by Doxygen 1.8.6 -->
|
||
<script type="text/javascript">
|
||
var searchBox = new SearchBox("searchBox", "../../search",false,'Search');
|
||
</script>
|
||
<div id="navrow1" class="tabs">
|
||
<ul class="tablist">
|
||
<li><a href="../../index.html"><span>Main Page</span></a></li>
|
||
<li><a href="../../namespaces.html"><span>Namespaces</span></a></li>
|
||
<li><a href="../../annotated.html"><span>Classes</span></a></li>
|
||
<li class="current"><a href="../../files.html"><span>Files</span></a></li>
|
||
<li>
|
||
<div id="MSearchBox" class="MSearchBoxInactive">
|
||
<span class="left">
|
||
<img id="MSearchSelect" src="../../search/mag_sel.png"
|
||
onmouseover="return searchBox.OnSearchSelectShow()"
|
||
onmouseout="return searchBox.OnSearchSelectHide()"
|
||
alt=""/>
|
||
<input type="text" id="MSearchField" value="Search" accesskey="S"
|
||
onfocus="searchBox.OnSearchFieldFocus(true)"
|
||
onblur="searchBox.OnSearchFieldFocus(false)"
|
||
onkeyup="searchBox.OnSearchFieldChange(event)"/>
|
||
</span><span class="right">
|
||
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="../../search/close.png" alt=""/></a>
|
||
</span>
|
||
</div>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
<div id="navrow2" class="tabs2">
|
||
<ul class="tablist">
|
||
<li><a href="../../files.html"><span>File List</span></a></li>
|
||
</ul>
|
||
</div>
|
||
<!-- window showing the filter options -->
|
||
<div id="MSearchSelectWindow"
|
||
onmouseover="return searchBox.OnSearchSelectShow()"
|
||
onmouseout="return searchBox.OnSearchSelectHide()"
|
||
onkeydown="return searchBox.OnSearchSelectKey(event)">
|
||
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerator</a></div>
|
||
|
||
<!-- iframe showing the search results (closed by default) -->
|
||
<div id="MSearchResultsWindow">
|
||
<iframe src="javascript:void(0)" frameborder="0"
|
||
name="MSearchResults" id="MSearchResults">
|
||
</iframe>
|
||
</div>
|
||
|
||
<div id="nav-path" class="navpath">
|
||
<ul>
|
||
<li class="navelem"><a class="el" href="../../dir_39dc0668bd5a501998f94e8b4e546c71.html">media</a></li><li class="navelem"><a class="el" href="../../dir_65f7acfa8cf3a5f1edc11faa2428b914.html">formats</a></li><li class="navelem"><a class="el" href="../../dir_3e9291fd7a18fdecc763294cb2628910.html">mp4</a></li> </ul>
|
||
</div>
|
||
</div><!-- top -->
|
||
<div class="header">
|
||
<div class="headertitle">
|
||
<div class="title">multi_segment_segmenter.cc</div> </div>
|
||
</div><!--header-->
|
||
<div class="contents">
|
||
<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>
|
||
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
|
||
<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>
|
||
<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>
|
||
<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>
|
||
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
|
||
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/media/formats/mp4/multi_segment_segmenter.h"</span></div>
|
||
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
|
||
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "packager/base/strings/string_number_conversions.h"</span></div>
|
||
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "packager/base/strings/string_util.h"</span></div>
|
||
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/media/base/buffer_writer.h"</span></div>
|
||
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/media/base/media_stream.h"</span></div>
|
||
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/media/base/muxer_options.h"</span></div>
|
||
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/media/base/muxer_util.h"</span></div>
|
||
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/media/event/muxer_listener.h"</span></div>
|
||
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "packager/media/file/file.h"</span></div>
|
||
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "packager/media/formats/mp4/box_definitions.h"</span></div>
|
||
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
|
||
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">namespace </span>edash_packager {</div>
|
||
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">namespace </span>media {</div>
|
||
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">namespace </span>mp4 {</div>
|
||
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
|
||
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> MultiSegmentSegmenter::MultiSegmentSegmenter(<span class="keyword">const</span> MuxerOptions& options,</div>
|
||
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  scoped_ptr<FileType> ftyp,</div>
|
||
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  scoped_ptr<Movie> moov)</div>
|
||
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  : Segmenter(options, ftyp.Pass(), moov.Pass()),</div>
|
||
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  styp_(new SegmentType),</div>
|
||
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  num_segments_(0) {</div>
|
||
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="comment">// Use the same brands for styp as ftyp.</span></div>
|
||
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  styp_->major_brand = Segmenter::ftyp()->major_brand;</div>
|
||
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  styp_->compatible_brands = Segmenter::ftyp()->compatible_brands;</div>
|
||
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> }</div>
|
||
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
|
||
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> MultiSegmentSegmenter::~MultiSegmentSegmenter() {}</div>
|
||
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
|
||
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="../../dc/d7a/classedash__packager_1_1media_1_1mp4_1_1MultiSegmentSegmenter.html#a88be93ad6cce209ceaf086ab98009516"> 36</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../dc/d7a/classedash__packager_1_1media_1_1mp4_1_1MultiSegmentSegmenter.html#a88be93ad6cce209ceaf086ab98009516">MultiSegmentSegmenter::GetInitRange</a>(<span class="keywordtype">size_t</span>* offset, <span class="keywordtype">size_t</span>* size) {</div>
|
||
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  DLOG(INFO) << <span class="stringliteral">"MultiSegmentSegmenter outputs init segment: "</span></div>
|
||
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  << options().<a class="code" href="../../de/d57/structedash__packager_1_1media_1_1MuxerOptions.html#addd401a47b287f3c18cbdc4bfa1a6963">output_file_name</a>;</div>
|
||
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
||
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> }</div>
|
||
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
|
||
<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="../../dc/d7a/classedash__packager_1_1media_1_1mp4_1_1MultiSegmentSegmenter.html#a789a8b0449e433076dfc0c2344d32280"> 42</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../dc/d7a/classedash__packager_1_1media_1_1mp4_1_1MultiSegmentSegmenter.html#a789a8b0449e433076dfc0c2344d32280">MultiSegmentSegmenter::GetIndexRange</a>(<span class="keywordtype">size_t</span>* offset, <span class="keywordtype">size_t</span>* size) {</div>
|
||
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  DLOG(INFO) << <span class="stringliteral">"MultiSegmentSegmenter does not have index range."</span>;</div>
|
||
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
||
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> }</div>
|
||
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
|
||
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> MultiSegmentSegmenter::DoInitialize() {</div>
|
||
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  DCHECK(ftyp());</div>
|
||
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  DCHECK(moov());</div>
|
||
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">// Generate the output file with init segment.</span></div>
|
||
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html">File</a>* file = <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="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span> (file == NULL) {</div>
|
||
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a>(error::FILE_FAILURE,</div>
|
||
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="stringliteral">"Cannot open file for write "</span> + options().output_file_name);</div>
|
||
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div>
|
||
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  scoped_ptr<BufferWriter> buffer(<span class="keyword">new</span> <a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html">BufferWriter</a>);</div>
|
||
<div class="line"><a name="l00057"></a><span class="lineno"> 57</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="l00058"></a><span class="lineno"> 58</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="l00059"></a><span class="lineno"> 59</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> status = buffer->WriteToFile(file);</div>
|
||
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">if</span> (!file-><a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#a42290da768cd34316d2f4c5fc3976b38">Close</a>()) {</div>
|
||
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  LOG(WARNING) << <span class="stringliteral">"Failed to close the file properly: "</span></div>
|
||
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  << options().<a class="code" href="../../de/d57/structedash__packager_1_1media_1_1MuxerOptions.html#addd401a47b287f3c18cbdc4bfa1a6963">output_file_name</a>;</div>
|
||
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
|
||
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> status;</div>
|
||
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> }</div>
|
||
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
|
||
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> Status MultiSegmentSegmenter::DoFinalize() {</div>
|
||
<div class="line"><a name="l00068"></a><span class="lineno"> 68</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="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
||
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> }</div>
|
||
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
|
||
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> Status MultiSegmentSegmenter::DoFinalizeSegment() {</div>
|
||
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  DCHECK(sidx());</div>
|
||
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// earliest_presentation_time is the earliest presentation time of any</span></div>
|
||
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// access unit in the reference stream in the first subsegment.</span></div>
|
||
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// It will be re-calculated later when subsegments are finalized.</span></div>
|
||
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  sidx()->earliest_presentation_time =</div>
|
||
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  sidx()->references[0].earliest_presentation_time;</div>
|
||
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
|
||
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">if</span> (options().num_subsegments_per_sidx <= 0)</div>
|
||
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">return</span> WriteSegment();</div>
|
||
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
|
||
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// sidx() contains pre-generated segment references with one reference per</span></div>
|
||
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// fragment. Calculate |num_fragments_per_subsegment| and combine</span></div>
|
||
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// pre-generated references into final subsegment references.</span></div>
|
||
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  uint32_t num_fragments = sidx()->references.size();</div>
|
||
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  uint32_t num_fragments_per_subsegment =</div>
|
||
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  (num_fragments - 1) / options().<a class="code" href="../../de/d57/structedash__packager_1_1media_1_1MuxerOptions.html#a93714f081569ea56ed626eb057c1761f">num_subsegments_per_sidx</a> + 1;</div>
|
||
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">if</span> (num_fragments_per_subsegment <= 1)</div>
|
||
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> WriteSegment();</div>
|
||
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
|
||
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  uint32_t frag_index = 0;</div>
|
||
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  uint32_t subseg_index = 0;</div>
|
||
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  std::vector<SegmentReference>& refs = sidx()->references;</div>
|
||
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  uint64_t first_sap_time =</div>
|
||
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  refs[0].sap_delta_time + refs[0].earliest_presentation_time;</div>
|
||
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">for</span> (uint32_t i = 1; i < num_fragments; ++i) {</div>
|
||
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  refs[subseg_index].referenced_size += refs[i].referenced_size;</div>
|
||
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  refs[subseg_index].subsegment_duration += refs[i].subsegment_duration;</div>
|
||
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  refs[subseg_index].earliest_presentation_time =</div>
|
||
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  std::min(refs[subseg_index].earliest_presentation_time,</div>
|
||
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  refs[i].earliest_presentation_time);</div>
|
||
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> (refs[subseg_index].sap_type == SegmentReference::TypeUnknown &&</div>
|
||
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  refs[i].sap_type != SegmentReference::TypeUnknown) {</div>
|
||
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  refs[subseg_index].sap_type = refs[i].sap_type;</div>
|
||
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  first_sap_time =</div>
|
||
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  refs[i].sap_delta_time + refs[i].earliest_presentation_time;</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>  <span class="keywordflow">if</span> (++frag_index >= num_fragments_per_subsegment) {</div>
|
||
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// Calculate sap delta time w.r.t. sidx_->earliest_presentation_time.</span></div>
|
||
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">if</span> (refs[subseg_index].sap_type != SegmentReference::TypeUnknown) {</div>
|
||
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  refs[subseg_index].sap_delta_time =</div>
|
||
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  first_sap_time - refs[subseg_index].earliest_presentation_time;</div>
|
||
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  }</div>
|
||
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">if</span> (++i >= num_fragments)</div>
|
||
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">break</span>;</div>
|
||
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  refs[++subseg_index] = refs[i];</div>
|
||
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  first_sap_time =</div>
|
||
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  refs[i].sap_delta_time + refs[i].earliest_presentation_time;</div>
|
||
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  frag_index = 1;</div>
|
||
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
|
||
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div>
|
||
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
|
||
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  refs.resize(options().num_subsegments_per_sidx);</div>
|
||
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div>
|
||
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// earliest_presentation_time is the earliest presentation time of any</span></div>
|
||
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="comment">// access unit in the reference stream in the first subsegment.</span></div>
|
||
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  sidx()->earliest_presentation_time = refs[0].earliest_presentation_time;</div>
|
||
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
|
||
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">return</span> WriteSegment();</div>
|
||
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> }</div>
|
||
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
|
||
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> Status MultiSegmentSegmenter::WriteSegment() {</div>
|
||
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  DCHECK(sidx());</div>
|
||
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  DCHECK(fragment_buffer());</div>
|
||
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  DCHECK(styp_);</div>
|
||
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
|
||
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  scoped_ptr<BufferWriter> buffer(<span class="keyword">new</span> BufferWriter());</div>
|
||
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  File* file;</div>
|
||
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  std::string file_name;</div>
|
||
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">if</span> (options().segment_template.empty()) {</div>
|
||
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// Append the segment to output file if segment template is not specified.</span></div>
|
||
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  file_name = options().<a class="code" href="../../de/d57/structedash__packager_1_1media_1_1MuxerOptions.html#addd401a47b287f3c18cbdc4bfa1a6963">output_file_name</a>.c_str();</div>
|
||
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  file = <a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#a0933ccd7df76fcf8fbcfe12c15dbf6c5">File::Open</a>(file_name.c_str(), <span class="stringliteral">"a"</span>);</div>
|
||
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">if</span> (file == NULL) {</div>
|
||
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">return</span> Status(</div>
|
||
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  error::FILE_FAILURE,</div>
|
||
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="stringliteral">"Cannot open file for append "</span> + options().output_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>  } <span class="keywordflow">else</span> {</div>
|
||
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  file = <a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#a0933ccd7df76fcf8fbcfe12c15dbf6c5">File::Open</a>(GetSegmentName(options().segment_template,</div>
|
||
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  sidx()->earliest_presentation_time,</div>
|
||
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  num_segments_++,</div>
|
||
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  options().bandwidth).c_str(),</div>
|
||
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="stringliteral">"w"</span>);</div>
|
||
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (file == NULL) {</div>
|
||
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> Status(error::FILE_FAILURE,</div>
|
||
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="stringliteral">"Cannot open file for write "</span> + file_name);</div>
|
||
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div>
|
||
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  styp_->Write(buffer.get());</div>
|
||
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  }</div>
|
||
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div>
|
||
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="comment">// If num_subsegments_per_sidx is negative, no SIDX box is generated.</span></div>
|
||
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">if</span> (options().<a class="code" href="../../de/d57/structedash__packager_1_1media_1_1MuxerOptions.html#a93714f081569ea56ed626eb057c1761f">num_subsegments_per_sidx</a> >= 0)</div>
|
||
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  sidx()-><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="l00166"></a><span class="lineno"> 166</span> </div>
|
||
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> segment_size = buffer->Size() + fragment_buffer()->Size();</div>
|
||
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  DCHECK_NE(segment_size, 0u);</div>
|
||
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
|
||
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  Status status = buffer->WriteToFile(file);</div>
|
||
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">if</span> (status.ok())</div>
|
||
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  status = fragment_buffer()-><a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#aa83fe945386e5a75d3c377904fdddce2">WriteToFile</a>(file);</div>
|
||
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
|
||
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">if</span> (!file->Close())</div>
|
||
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  LOG(WARNING) << <span class="stringliteral">"Failed to close the file properly: "</span> << file_name;</div>
|
||
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div>
|
||
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">if</span> (!status.ok())</div>
|
||
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordflow">return</span> status;</div>
|
||
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div>
|
||
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  uint64_t segment_duration = 0;</div>
|
||
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment">// ISO/IEC 23009-1:2012: the value shall be identical to sum of the the</span></div>
|
||
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// values of all Subsegment_duration fields in the first ‘sidx’ box.</span></div>
|
||
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < sidx()->references.size(); ++i)</div>
|
||
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  segment_duration += sidx()->references[i].subsegment_duration;</div>
|
||
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div>
|
||
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <a class="code" href="../../dc/de1/classedash__packager_1_1media_1_1mp4_1_1Segmenter.html#a287d51571c92704274550d9f1d246cf9">UpdateProgress</a>(segment_duration);</div>
|
||
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">if</span> (muxer_listener()) {</div>
|
||
<div class="line"><a name="l00188"></a><span class="lineno"> 188</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="l00189"></a><span class="lineno"> 189</span>  muxer_listener()->OnNewSegment(</div>
|
||
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  sidx()->earliest_presentation_time, segment_duration, segment_size);</div>
|
||
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  }</div>
|
||
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
|
||
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
||
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> }</div>
|
||
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div>
|
||
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> } <span class="comment">// namespace mp4</span></div>
|
||
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> } <span class="comment">// namespace media</span></div>
|
||
<div class="line"><a name="l00198"></a><span class="lineno"> 198</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_1File_html_a42290da768cd34316d2f4c5fc3976b38"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html#a42290da768cd34316d2f4c5fc3976b38">edash_packager::media::File::Close</a></div><div class="ttdeci">virtual bool Close()=0</div></div>
|
||
<div class="ttc" id="classedash__packager_1_1media_1_1File_html"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html">edash_packager::media::File</a></div><div class="ttdoc">Define an abstract file interface. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d4d/file_8h_source.html#l00022">file.h:22</a></div></div>
|
||
<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>
|
||
<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>
|
||
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1MultiSegmentSegmenter_html_a789a8b0449e433076dfc0c2344d32280"><div class="ttname"><a href="../../dc/d7a/classedash__packager_1_1media_1_1mp4_1_1MultiSegmentSegmenter.html#a789a8b0449e433076dfc0c2344d32280">edash_packager::media::mp4::MultiSegmentSegmenter::GetIndexRange</a></div><div class="ttdeci">bool GetIndexRange(size_t *offset, size_t *size) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df1/multi__segment__segmenter_8cc_source.html#l00042">multi_segment_segmenter.cc:42</a></div></div>
|
||
<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>
|
||
<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>
|
||
<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>
|
||
<div class="ttc" id="structedash__packager_1_1media_1_1MuxerOptions_html_a93714f081569ea56ed626eb057c1761f"><div class="ttname"><a href="../../de/d57/structedash__packager_1_1media_1_1MuxerOptions.html#a93714f081569ea56ed626eb057c1761f">edash_packager::media::MuxerOptions::num_subsegments_per_sidx</a></div><div class="ttdeci">int num_subsegments_per_sidx</div><div class="ttdef"><b>Definition:</b> <a href="../../d0/d0e/muxer__options_8h_source.html#l00050">muxer_options.h:50</a></div></div>
|
||
<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>
|
||
<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>
|
||
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1MultiSegmentSegmenter_html_a88be93ad6cce209ceaf086ab98009516"><div class="ttname"><a href="../../dc/d7a/classedash__packager_1_1media_1_1mp4_1_1MultiSegmentSegmenter.html#a88be93ad6cce209ceaf086ab98009516">edash_packager::media::mp4::MultiSegmentSegmenter::GetInitRange</a></div><div class="ttdeci">bool GetInitRange(size_t *offset, size_t *size) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df1/multi__segment__segmenter_8cc_source.html#l00036">multi_segment_segmenter.cc:36</a></div></div>
|
||
<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>
|
||
<div class="ttc" id="classedash__packager_1_1media_1_1BufferWriter_html"><div class="ttname"><a href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html">edash_packager::media::BufferWriter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd2/buffer__writer_8h_source.html#l00022">buffer_writer.h:22</a></div></div>
|
||
</div><!-- fragment --></div><!-- contents -->
|
||
<!-- start footer part -->
|
||
<hr class="footer"/><address class="footer"><small>
|
||
Generated on Tue Nov 17 2015 18:47:31 for DASH Media Packaging SDK by  <a href="http://www.doxygen.org/index.html">
|
||
<img class="footer" src="../../doxygen.png" alt="doxygen"/>
|
||
</a> 1.8.6
|
||
</small></address>
|
||
</body>
|
||
</html>
|