255 lines
24 KiB
HTML
255 lines
24 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/file/io_cache.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>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><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_279fd47bebb21302c25cfb685e84c359.html">file</a></li> </ul>
|
|
</div>
|
|
</div><!-- top -->
|
|
<div class="header">
|
|
<div class="headertitle">
|
|
<div class="title">io_cache.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 2015 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/file/io_cache.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 <string.h></span></div>
|
|
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
|
|
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <algorithm></span></div>
|
|
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div>
|
|
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div>
|
|
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
|
|
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>shaka {</div>
|
|
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
|
|
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">using</span> base::AutoLock;</div>
|
|
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">using</span> base::AutoUnlock;</div>
|
|
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </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> </div>
|
|
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> IoCache::IoCache(uint64_t cache_size)</div>
|
|
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  : cache_size_(cache_size),</div>
|
|
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  read_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,</div>
|
|
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  base::WaitableEvent::InitialState::NOT_SIGNALED),</div>
|
|
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  write_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,</div>
|
|
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  base::WaitableEvent::InitialState::NOT_SIGNALED),</div>
|
|
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="comment">// Make the buffer one byte larger than the cache so that when the</span></div>
|
|
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="comment">// condition r_ptr == w_ptr is unambiguous (buffer empty).</span></div>
|
|
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  circular_buffer_(cache_size + 1),</div>
|
|
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  end_ptr_(&circular_buffer_[0] + cache_size + 1),</div>
|
|
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  r_ptr_(circular_buffer_.data()),</div>
|
|
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  w_ptr_(circular_buffer_.data()),</div>
|
|
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  closed_(false) {}</div>
|
|
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
|
|
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> IoCache::~IoCache() {</div>
|
|
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  Close();</div>
|
|
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> }</div>
|
|
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
|
|
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="../../dd/d7c/classshaka_1_1media_1_1IoCache.html#a3cb864f866af25f0ff92c367946b0945"> 40</a></span> uint64_t IoCache::Read(<span class="keywordtype">void</span>* buffer, uint64_t size) {</div>
|
|
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  DCHECK(buffer);</div>
|
|
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
|
|
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  AutoLock lock(lock_);</div>
|
|
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">while</span> (!closed_ && (BytesCachedInternal() == 0)) {</div>
|
|
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  AutoUnlock unlock(lock_);</div>
|
|
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  write_event_.Wait();</div>
|
|
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div>
|
|
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
|
|
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  size = std::min(size, BytesCachedInternal());</div>
|
|
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  uint64_t first_chunk_size(std::min(size, static_cast<uint64_t>(</div>
|
|
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  end_ptr_ - r_ptr_)));</div>
|
|
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  memcpy(buffer, r_ptr_, first_chunk_size);</div>
|
|
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  r_ptr_ += first_chunk_size;</div>
|
|
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  DCHECK_GE(end_ptr_, r_ptr_);</div>
|
|
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> (r_ptr_ == end_ptr_)</div>
|
|
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  r_ptr_ = &circular_buffer_[0];</div>
|
|
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  uint64_t second_chunk_size(size - first_chunk_size);</div>
|
|
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">if</span> (second_chunk_size) {</div>
|
|
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  memcpy(static_cast<uint8_t*>(buffer) + first_chunk_size, r_ptr_,</div>
|
|
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  second_chunk_size);</div>
|
|
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  r_ptr_ += second_chunk_size;</div>
|
|
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  DCHECK_GT(end_ptr_, r_ptr_);</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>  read_event_.Signal();</div>
|
|
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> size;</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> </div>
|
|
<div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="../../dd/d7c/classshaka_1_1media_1_1IoCache.html#a0349796209c24a99bfe3c1bfdafb1d28"> 68</a></span> uint64_t IoCache::Write(<span class="keyword">const</span> <span class="keywordtype">void</span>* buffer, uint64_t size) {</div>
|
|
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  DCHECK(buffer);</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>  <span class="keyword">const</span> uint8_t* r_ptr(static_cast<const uint8_t*>(buffer));</div>
|
|
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  uint64_t bytes_left(size);</div>
|
|
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">while</span> (bytes_left) {</div>
|
|
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  AutoLock lock(lock_);</div>
|
|
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">while</span> (!closed_ && (BytesFreeInternal() == 0)) {</div>
|
|
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  AutoUnlock unlock(lock_);</div>
|
|
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  read_event_.Wait();</div>
|
|
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
|
|
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (closed_)</div>
|
|
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
|
|
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  uint64_t write_size(std::min(bytes_left, BytesFreeInternal()));</div>
|
|
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  uint64_t first_chunk_size(std::min(write_size, static_cast<uint64_t>(</div>
|
|
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  end_ptr_ - w_ptr_)));</div>
|
|
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  memcpy(w_ptr_, r_ptr, first_chunk_size);</div>
|
|
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  w_ptr_ += first_chunk_size;</div>
|
|
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  DCHECK_GE(end_ptr_, w_ptr_);</div>
|
|
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">if</span> (w_ptr_ == end_ptr_)</div>
|
|
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  w_ptr_ = &circular_buffer_[0];</div>
|
|
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  r_ptr += first_chunk_size;</div>
|
|
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  uint64_t second_chunk_size(write_size - first_chunk_size);</div>
|
|
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">if</span> (second_chunk_size) {</div>
|
|
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  memcpy(w_ptr_, r_ptr, second_chunk_size);</div>
|
|
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  w_ptr_ += second_chunk_size;</div>
|
|
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  DCHECK_GT(end_ptr_, w_ptr_);</div>
|
|
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  r_ptr += second_chunk_size;</div>
|
|
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</div>
|
|
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  bytes_left -= write_size;</div>
|
|
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  write_event_.Signal();</div>
|
|
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div>
|
|
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">return</span> size;</div>
|
|
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> }</div>
|
|
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
|
|
<div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="../../dd/d7c/classshaka_1_1media_1_1IoCache.html#a29080034b90671628ea681e10ea92a48"> 104</a></span> <span class="keywordtype">void</span> IoCache::Clear() {</div>
|
|
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  AutoLock lock(lock_);</div>
|
|
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  r_ptr_ = w_ptr_ = circular_buffer_.data();</div>
|
|
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// Let any writers know that there is room in the cache.</span></div>
|
|
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  read_event_.Signal();</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> </div>
|
|
<div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="../../dd/d7c/classshaka_1_1media_1_1IoCache.html#a23dfcb4d031d76e980e41d1b1bec7112"> 111</a></span> <span class="keywordtype">void</span> IoCache::Close() {</div>
|
|
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  AutoLock lock(lock_);</div>
|
|
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  closed_ = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  read_event_.Signal();</div>
|
|
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  write_event_.Signal();</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> </div>
|
|
<div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="../../dd/d7c/classshaka_1_1media_1_1IoCache.html#ae751faea047196ba2770f5bf90649185"> 118</a></span> <span class="keywordtype">void</span> IoCache::Reopen() {</div>
|
|
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  AutoLock lock(lock_);</div>
|
|
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  CHECK(closed_);</div>
|
|
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  r_ptr_ = w_ptr_ = circular_buffer_.data();</div>
|
|
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  closed_ = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  read_event_.Reset();</div>
|
|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  write_event_.Reset();</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> </div>
|
|
<div class="line"><a name="l00127"></a><span class="lineno"><a class="line" href="../../dd/d7c/classshaka_1_1media_1_1IoCache.html#a385baed04dd0cc0d3dca20d78f61559f"> 127</a></span> uint64_t IoCache::BytesCached() {</div>
|
|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  AutoLock lock(lock_);</div>
|
|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> BytesCachedInternal();</div>
|
|
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> }</div>
|
|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
|
|
<div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="../../dd/d7c/classshaka_1_1media_1_1IoCache.html#a74e1d7369afe4f03c551b6e67ec82ee9"> 132</a></span> uint64_t IoCache::BytesFree() {</div>
|
|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  AutoLock lock(lock_);</div>
|
|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">return</span> BytesFreeInternal();</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> uint64_t IoCache::BytesCachedInternal() {</div>
|
|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> (r_ptr_ <= w_ptr_)</div>
|
|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  ? w_ptr_ - r_ptr_</div>
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  : (end_ptr_ - r_ptr_) + (w_ptr_ - circular_buffer_.data());</div>
|
|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> }</div>
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> uint64_t IoCache::BytesFreeInternal() {</div>
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">return</span> cache_size_ - BytesCachedInternal();</div>
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> }</div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"><a class="line" href="../../dd/d7c/classshaka_1_1media_1_1IoCache.html#a841a082bfd88280a4ea00ac1a9e64dac"> 147</a></span> <span class="keywordtype">void</span> IoCache::WaitUntilEmptyOrClosed() {</div>
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  AutoLock lock(lock_);</div>
|
|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">while</span> (!closed_ && BytesCachedInternal()) {</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  AutoUnlock unlock(lock_);</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  read_event_.Wait();</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  }</div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> }</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> } <span class="comment">// namespace media</span></div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> } <span class="comment">// namespace shaka</span></div>
|
|
</div><!-- fragment --></div><!-- contents -->
|
|
<!-- start footer part -->
|
|
<hr class="footer"/><address class="footer"><small>
|
|
Generated on Fri Dec 9 2016 21:13:52 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>
|