1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2<html xmlns="http://www.w3.org/1999/xhtml"> 3<head> 4<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> 5<meta http-equiv="X-UA-Compatible" content="IE=9"/> 6<meta name="generator" content="Doxygen 1.8.15"/> 7<meta name="viewport" content="width=device-width, initial-scale=1"/> 8<title>Oboe: include/oboe/StabilizedCallback.h Source File</title> 9<link href="tabs.css" rel="stylesheet" type="text/css"/> 10<script type="text/javascript" src="jquery.js"></script> 11<script type="text/javascript" src="dynsections.js"></script> 12<link href="search/search.css" rel="stylesheet" type="text/css"/> 13<script type="text/javascript" src="search/searchdata.js"></script> 14<script type="text/javascript" src="search/search.js"></script> 15<link href="doxygen.css" rel="stylesheet" type="text/css" /> 16</head> 17<body> 18<div id="top"><!-- do not remove this div, it is closed by doxygen! --> 19<div id="titlearea"> 20<table cellspacing="0" cellpadding="0"> 21 <tbody> 22 <tr style="height: 56px;"> 23 <td id="projectalign" style="padding-left: 0.5em;"> 24 <div id="projectname">Oboe 25  <span id="projectnumber">1.5</span> 26 </div> 27 <div id="projectbrief">A library for creating real-time audio apps on Android</div> 28 </td> 29 </tr> 30 </tbody> 31</table> 32</div> 33<!-- end header part --> 34<!-- Generated by Doxygen 1.8.15 --> 35<script type="text/javascript"> 36/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ 37var searchBox = new SearchBox("searchBox", "search",false,'Search'); 38/* @license-end */ 39</script> 40<script type="text/javascript" src="menudata.js"></script> 41<script type="text/javascript" src="menu.js"></script> 42<script type="text/javascript"> 43/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ 44$(function() { 45 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class="title">StabilizedCallback.h</div> </div> 72</div><!--header--> 73<div class="contents"> 74<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright 2018 The Android Open Source Project</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * You may obtain a copy of the License at</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * limitations under the License.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> */</span></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="preprocessor">#ifndef OBOE_STABILIZEDCALLBACK_H</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#define OBOE_STABILIZEDCALLBACK_H</span></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="preprocessor">#include <cstdint></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "oboe/AudioStream.h"</span></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> <span class="keyword">namespace </span><a class="code" href="namespaceoboe.html">oboe</a> {</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="classoboe_1_1_stabilized_callback.html"> 25</a></span> <span class="keyword">class </span><a class="code" href="classoboe_1_1_stabilized_callback.html">StabilizedCallback</a> : <span class="keyword">public</span> <a class="code" href="classoboe_1_1_audio_stream_callback.html">AudioStreamCallback</a> {</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keyword">explicit</span> <a class="code" href="classoboe_1_1_stabilized_callback.html">StabilizedCallback</a>(<a class="code" href="classoboe_1_1_audio_stream_callback.html">AudioStreamCallback</a> *callback);</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <a class="code" href="namespaceoboe.html#af85fc9910a287df6c5df0ed396bb75cd">DataCallbackResult</a></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <a class="code" href="classoboe_1_1_stabilized_callback.html#ad447e12ebf732cf151655c1fbaf58a49">onAudioReady</a>(<a class="code" href="classoboe_1_1_audio_stream.html">AudioStream</a> *oboeStream, <span class="keywordtype">void</span> *audioData, int32_t numFrames) <span class="keyword">override</span>;</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="classoboe_1_1_stabilized_callback.html#a7ec0e9fca3181962ab78716bcda83e10"> 33</a></span>  <span class="keywordtype">void</span> <a class="code" href="classoboe_1_1_stabilized_callback.html#a7ec0e9fca3181962ab78716bcda83e10">onErrorBeforeClose</a>(<a class="code" href="classoboe_1_1_audio_stream.html">AudioStream</a> *oboeStream, <a class="code" href="namespaceoboe.html#a486512e787b609c80ba4436f23929af1">Result</a> error)<span class="keyword"> override </span>{</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">return</span> mCallback-><a class="code" href="classoboe_1_1_audio_stream_error_callback.html#a4eb1e4916b71d8231e97b19898bc9bf0">onErrorBeforeClose</a>(oboeStream, error);</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> </div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classoboe_1_1_stabilized_callback.html#af7521da42c4b08a71e6102994f6f41f4"> 37</a></span>  <span class="keywordtype">void</span> <a class="code" href="classoboe_1_1_stabilized_callback.html#af7521da42c4b08a71e6102994f6f41f4">onErrorAfterClose</a>(<a class="code" href="classoboe_1_1_audio_stream.html">AudioStream</a> *oboeStream, <a class="code" href="namespaceoboe.html#a486512e787b609c80ba4436f23929af1">Result</a> error)<span class="keyword"> override </span>{</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>  <span class="comment">// Reset all fields now that the stream has been closed</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  mFrameCount = 0;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  mEpochTimeNanos = 0;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  mOpsPerNano = 1;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> mCallback-><a class="code" href="classoboe_1_1_audio_stream_error_callback.html#a76bd3ef3e00396e10c21812003654cfe">onErrorAfterClose</a>(oboeStream, error);</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</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> <span class="keyword">private</span>:</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>  <a class="code" href="classoboe_1_1_audio_stream_callback.html">AudioStreamCallback</a> *mCallback = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  int64_t mFrameCount = 0;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  int64_t mEpochTimeNanos = 0;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">double</span> mOpsPerNano = 1;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">void</span> generateLoad(int64_t durationNanos);</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> };</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor">#if defined(__i386__) || defined(__x86_64__)</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor">#define cpu_relax() asm volatile("rep; nop" ::: "memory");</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor">#elif defined(__arm__) || defined(__mips__)</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor"> #define cpu_relax() asm volatile("":::"memory")</span></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> <span class="preprocessor">#elif defined(__aarch64__)</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor">#define cpu_relax() asm volatile("yield" ::: "memory")</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor">#error "cpu_relax is not defined for this architecture"</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> }</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor">#endif //OBOE_STABILIZEDCALLBACK_H</span></div><div class="ttc" id="classoboe_1_1_stabilized_callback_html_ad447e12ebf732cf151655c1fbaf58a49"><div class="ttname"><a href="classoboe_1_1_stabilized_callback.html#ad447e12ebf732cf151655c1fbaf58a49">oboe::StabilizedCallback::onAudioReady</a></div><div class="ttdeci">DataCallbackResult onAudioReady(AudioStream *oboeStream, void *audioData, int32_t numFrames) override</div></div> 75<div class="ttc" id="classoboe_1_1_audio_stream_callback_html"><div class="ttname"><a href="classoboe_1_1_audio_stream_callback.html">oboe::AudioStreamCallback</a></div><div class="ttdef"><b>Definition:</b> AudioStreamCallback.h:181</div></div> 76<div class="ttc" id="namespaceoboe_html_af85fc9910a287df6c5df0ed396bb75cd"><div class="ttname"><a href="namespaceoboe.html#af85fc9910a287df6c5df0ed396bb75cd">oboe::DataCallbackResult</a></div><div class="ttdeci">DataCallbackResult</div><div class="ttdef"><b>Definition:</b> Definitions.h:119</div></div> 77<div class="ttc" id="classoboe_1_1_audio_stream_error_callback_html_a76bd3ef3e00396e10c21812003654cfe"><div class="ttname"><a href="classoboe_1_1_audio_stream_error_callback.html#a76bd3ef3e00396e10c21812003654cfe">oboe::AudioStreamErrorCallback::onErrorAfterClose</a></div><div class="ttdeci">virtual void onErrorAfterClose(AudioStream *, Result)</div><div class="ttdef"><b>Definition:</b> AudioStreamCallback.h:163</div></div> 78<div class="ttc" id="classoboe_1_1_audio_stream_html"><div class="ttname"><a href="classoboe_1_1_audio_stream.html">oboe::AudioStream</a></div><div class="ttdef"><b>Definition:</b> AudioStream.h:44</div></div> 79<div class="ttc" id="namespaceoboe_html_a486512e787b609c80ba4436f23929af1"><div class="ttname"><a href="namespaceoboe.html#a486512e787b609c80ba4436f23929af1">oboe::Result</a></div><div class="ttdeci">Result</div><div class="ttdef"><b>Definition:</b> Definitions.h:131</div></div> 80<div class="ttc" id="classoboe_1_1_stabilized_callback_html"><div class="ttname"><a href="classoboe_1_1_stabilized_callback.html">oboe::StabilizedCallback</a></div><div class="ttdef"><b>Definition:</b> StabilizedCallback.h:25</div></div> 81<div class="ttc" id="namespaceoboe_html"><div class="ttname"><a href="namespaceoboe.html">oboe</a></div><div class="ttdef"><b>Definition:</b> AudioStream.h:31</div></div> 82<div class="ttc" id="classoboe_1_1_stabilized_callback_html_af7521da42c4b08a71e6102994f6f41f4"><div class="ttname"><a href="classoboe_1_1_stabilized_callback.html#af7521da42c4b08a71e6102994f6f41f4">oboe::StabilizedCallback::onErrorAfterClose</a></div><div class="ttdeci">void onErrorAfterClose(AudioStream *oboeStream, Result error) override</div><div class="ttdef"><b>Definition:</b> StabilizedCallback.h:37</div></div> 83<div class="ttc" id="classoboe_1_1_stabilized_callback_html_a7ec0e9fca3181962ab78716bcda83e10"><div class="ttname"><a href="classoboe_1_1_stabilized_callback.html#a7ec0e9fca3181962ab78716bcda83e10">oboe::StabilizedCallback::onErrorBeforeClose</a></div><div class="ttdeci">void onErrorBeforeClose(AudioStream *oboeStream, Result error) override</div><div class="ttdef"><b>Definition:</b> StabilizedCallback.h:33</div></div> 84<div class="ttc" id="classoboe_1_1_audio_stream_error_callback_html_a4eb1e4916b71d8231e97b19898bc9bf0"><div class="ttname"><a href="classoboe_1_1_audio_stream_error_callback.html#a4eb1e4916b71d8231e97b19898bc9bf0">oboe::AudioStreamErrorCallback::onErrorBeforeClose</a></div><div class="ttdeci">virtual void onErrorBeforeClose(AudioStream *, Result)</div><div class="ttdef"><b>Definition:</b> AudioStreamCallback.h:147</div></div> 85</div><!-- fragment --></div><!-- contents --> 86<!-- start footer part --> 87<hr class="footer"/><address class="footer"><small> 88Generated by  <a href="http://www.doxygen.org/index.html"> 89<img class="footer" src="doxygen.png" alt="doxygen"/> 90</a> 1.8.15 91</small></address> 92</body> 93</html> 94
