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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>JUCE: AudioDeviceManager Class Reference</title>
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<div class="header">
  <div class="summary">
<a href="#nested-classes">Classes</a> &#124;
<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="classAudioDeviceManager-members.html">List of all members</a>  </div>
  <div class="headertitle">
<div class="title">AudioDeviceManager Class Reference</div>  </div>
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<div class="contents">

<p>Manages the state of some audio and midi i/o devices.  
 <a href="classAudioDeviceManager.html#details">More...</a></p>
<div id="dynsection-0" onclick="return toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;">
  <img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for AudioDeviceManager:</div>
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<area href="classChangeBroadcaster.html" title="Holds a list of ChangeListeners, and sends messages to them when instructed. " alt="ChangeBroadcaster" shape="rect" coords="0,0,136,24"/>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structAudioDeviceManager_1_1AudioDeviceSetup.html">AudioDeviceSetup</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">This structure holds a set of properties describing the current audio setup.  <a href="structAudioDeviceManager_1_1AudioDeviceSetup.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:accab16a03e809121d56e8b272125f3ea"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#accab16a03e809121d56e8b272125f3ea">AudioDeviceManager</a> ()</td></tr>
<tr class="memdesc:accab16a03e809121d56e8b272125f3ea"><td class="mdescLeft">&#160;</td><td class="mdescRight">Creates a default <a class="el" href="classAudioDeviceManager.html" title="Manages the state of some audio and midi i/o devices. ">AudioDeviceManager</a>.  <a href="#accab16a03e809121d56e8b272125f3ea">More...</a><br /></td></tr>
<tr class="separator:accab16a03e809121d56e8b272125f3ea"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aba2ff8bbc69b9434dfc90c3a7bc09d6a"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#aba2ff8bbc69b9434dfc90c3a7bc09d6a">~AudioDeviceManager</a> ()</td></tr>
<tr class="memdesc:aba2ff8bbc69b9434dfc90c3a7bc09d6a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor.  <a href="#aba2ff8bbc69b9434dfc90c3a7bc09d6a">More...</a><br /></td></tr>
<tr class="separator:aba2ff8bbc69b9434dfc90c3a7bc09d6a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4c6d8a76a270a6e4ca0537093f447b44"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classString.html">String</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a4c6d8a76a270a6e4ca0537093f447b44">initialise</a> (int numInputChannelsNeeded, int numOutputChannelsNeeded, const <a class="el" href="classXmlElement.html">XmlElement</a> *savedState, bool selectDefaultDeviceOnFailure, const <a class="el" href="classString.html">String</a> &amp;preferredDefaultDeviceName=<a class="el" href="classString.html">String</a>(), const <a class="el" href="structAudioDeviceManager_1_1AudioDeviceSetup.html">AudioDeviceSetup</a> *preferredSetupOptions=nullptr)</td></tr>
<tr class="memdesc:a4c6d8a76a270a6e4ca0537093f447b44"><td class="mdescLeft">&#160;</td><td class="mdescRight">Opens a set of audio devices ready for use.  <a href="#a4c6d8a76a270a6e4ca0537093f447b44">More...</a><br /></td></tr>
<tr class="separator:a4c6d8a76a270a6e4ca0537093f447b44"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aed646db44c76466d8d0e288d56e50691"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classString.html">String</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#aed646db44c76466d8d0e288d56e50691">initialiseWithDefaultDevices</a> (int numInputChannelsNeeded, int numOutputChannelsNeeded)</td></tr>
<tr class="memdesc:aed646db44c76466d8d0e288d56e50691"><td class="mdescLeft">&#160;</td><td class="mdescRight">Resets everything to a default device setup, clearing any stored settings.  <a href="#aed646db44c76466d8d0e288d56e50691">More...</a><br /></td></tr>
<tr class="separator:aed646db44c76466d8d0e288d56e50691"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9898f5fc97622b0887bd60d838683293"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classXmlElement.html">XmlElement</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a9898f5fc97622b0887bd60d838683293">createStateXml</a> () const</td></tr>
<tr class="memdesc:a9898f5fc97622b0887bd60d838683293"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns some XML representing the current state of the manager.  <a href="#a9898f5fc97622b0887bd60d838683293">More...</a><br /></td></tr>
<tr class="separator:a9898f5fc97622b0887bd60d838683293"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9363240e6dcfe1462c6b97366e03ae7d"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a9363240e6dcfe1462c6b97366e03ae7d">getAudioDeviceSetup</a> (<a class="el" href="structAudioDeviceManager_1_1AudioDeviceSetup.html">AudioDeviceSetup</a> &amp;result)</td></tr>
<tr class="memdesc:a9363240e6dcfe1462c6b97366e03ae7d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the current device properties that are in use.  <a href="#a9363240e6dcfe1462c6b97366e03ae7d">More...</a><br /></td></tr>
<tr class="separator:a9363240e6dcfe1462c6b97366e03ae7d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aef0249d178aa5448ad2e949ae059c461"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classString.html">String</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#aef0249d178aa5448ad2e949ae059c461">setAudioDeviceSetup</a> (const <a class="el" href="structAudioDeviceManager_1_1AudioDeviceSetup.html">AudioDeviceSetup</a> &amp;newSetup, bool treatAsChosenDevice)</td></tr>
<tr class="memdesc:aef0249d178aa5448ad2e949ae059c461"><td class="mdescLeft">&#160;</td><td class="mdescRight">Changes the current device or its settings.  <a href="#aef0249d178aa5448ad2e949ae059c461">More...</a><br /></td></tr>
<tr class="separator:aef0249d178aa5448ad2e949ae059c461"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad7ab4d5ba626a08098bb77a6164321a1"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classAudioIODevice.html">AudioIODevice</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#ad7ab4d5ba626a08098bb77a6164321a1">getCurrentAudioDevice</a> () const noexcept</td></tr>
<tr class="memdesc:ad7ab4d5ba626a08098bb77a6164321a1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the currently-active audio device.  <a href="#ad7ab4d5ba626a08098bb77a6164321a1">More...</a><br /></td></tr>
<tr class="separator:ad7ab4d5ba626a08098bb77a6164321a1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa685f7ecd5e85c243ec69d969b370532"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classString.html">String</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#aa685f7ecd5e85c243ec69d969b370532">getCurrentAudioDeviceType</a> () const</td></tr>
<tr class="memdesc:aa685f7ecd5e85c243ec69d969b370532"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the type of audio device currently in use.  <a href="#aa685f7ecd5e85c243ec69d969b370532">More...</a><br /></td></tr>
<tr class="separator:aa685f7ecd5e85c243ec69d969b370532"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac291af583a101ca2da2cebb68155d3dd"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classAudioIODeviceType.html">AudioIODeviceType</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#ac291af583a101ca2da2cebb68155d3dd">getCurrentDeviceTypeObject</a> () const</td></tr>
<tr class="memdesc:ac291af583a101ca2da2cebb68155d3dd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the currently active audio device type object.  <a href="#ac291af583a101ca2da2cebb68155d3dd">More...</a><br /></td></tr>
<tr class="separator:ac291af583a101ca2da2cebb68155d3dd"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a49e34c1ed60dafcebefc55d12f9175ad"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a49e34c1ed60dafcebefc55d12f9175ad">setCurrentAudioDeviceType</a> (const <a class="el" href="classString.html">String</a> &amp;type, bool treatAsChosenDevice)</td></tr>
<tr class="memdesc:a49e34c1ed60dafcebefc55d12f9175ad"><td class="mdescLeft">&#160;</td><td class="mdescRight">Changes the class of audio device being used.  <a href="#a49e34c1ed60dafcebefc55d12f9175ad">More...</a><br /></td></tr>
<tr class="separator:a49e34c1ed60dafcebefc55d12f9175ad"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af9829fcacafb4a395d084b34cdb8391c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#af9829fcacafb4a395d084b34cdb8391c">closeAudioDevice</a> ()</td></tr>
<tr class="memdesc:af9829fcacafb4a395d084b34cdb8391c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Closes the currently-open device.  <a href="#af9829fcacafb4a395d084b34cdb8391c">More...</a><br /></td></tr>
<tr class="separator:af9829fcacafb4a395d084b34cdb8391c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac46693f5b78c06357b16bf5e95560605"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#ac46693f5b78c06357b16bf5e95560605">restartLastAudioDevice</a> ()</td></tr>
<tr class="memdesc:ac46693f5b78c06357b16bf5e95560605"><td class="mdescLeft">&#160;</td><td class="mdescRight">Tries to reload the last audio device that was running.  <a href="#ac46693f5b78c06357b16bf5e95560605">More...</a><br /></td></tr>
<tr class="separator:ac46693f5b78c06357b16bf5e95560605"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acf3977dcc83f22b7f51091d7ff7b8aff"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#acf3977dcc83f22b7f51091d7ff7b8aff">addAudioCallback</a> (<a class="el" href="classAudioIODeviceCallback.html">AudioIODeviceCallback</a> *newCallback)</td></tr>
<tr class="memdesc:acf3977dcc83f22b7f51091d7ff7b8aff"><td class="mdescLeft">&#160;</td><td class="mdescRight">Registers an audio callback to be used.  <a href="#acf3977dcc83f22b7f51091d7ff7b8aff">More...</a><br /></td></tr>
<tr class="separator:acf3977dcc83f22b7f51091d7ff7b8aff"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af6d672043bfc5ca423ea0ca41b5ad2d1"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#af6d672043bfc5ca423ea0ca41b5ad2d1">removeAudioCallback</a> (<a class="el" href="classAudioIODeviceCallback.html">AudioIODeviceCallback</a> *callback)</td></tr>
<tr class="memdesc:af6d672043bfc5ca423ea0ca41b5ad2d1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Deregisters a previously added callback.  <a href="#af6d672043bfc5ca423ea0ca41b5ad2d1">More...</a><br /></td></tr>
<tr class="separator:af6d672043bfc5ca423ea0ca41b5ad2d1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a79563c9d2cc87d059d8b101515e8dee1"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a79563c9d2cc87d059d8b101515e8dee1">getCpuUsage</a> () const</td></tr>
<tr class="memdesc:a79563c9d2cc87d059d8b101515e8dee1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the average proportion of available CPU being spent inside the audio callbacks.  <a href="#a79563c9d2cc87d059d8b101515e8dee1">More...</a><br /></td></tr>
<tr class="separator:a79563c9d2cc87d059d8b101515e8dee1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5c16cde5d7c4c49dd9b6d00cc17ba481"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a5c16cde5d7c4c49dd9b6d00cc17ba481">setMidiInputEnabled</a> (const <a class="el" href="classString.html">String</a> &amp;midiInputDeviceName, bool enabled)</td></tr>
<tr class="memdesc:a5c16cde5d7c4c49dd9b6d00cc17ba481"><td class="mdescLeft">&#160;</td><td class="mdescRight">Enables or disables a midi input device.  <a href="#a5c16cde5d7c4c49dd9b6d00cc17ba481">More...</a><br /></td></tr>
<tr class="separator:a5c16cde5d7c4c49dd9b6d00cc17ba481"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a036af6a982f687ace34b3241069cd233"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a036af6a982f687ace34b3241069cd233">isMidiInputEnabled</a> (const <a class="el" href="classString.html">String</a> &amp;midiInputDeviceName) const</td></tr>
<tr class="memdesc:a036af6a982f687ace34b3241069cd233"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true if a given midi input device is being used.  <a href="#a036af6a982f687ace34b3241069cd233">More...</a><br /></td></tr>
<tr class="separator:a036af6a982f687ace34b3241069cd233"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a31e11b7a8596530a87cfcf8e48b978d2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a31e11b7a8596530a87cfcf8e48b978d2">addMidiInputCallback</a> (const <a class="el" href="classString.html">String</a> &amp;midiInputDeviceName, <a class="el" href="classMidiInputCallback.html">MidiInputCallback</a> *callback)</td></tr>
<tr class="memdesc:a31e11b7a8596530a87cfcf8e48b978d2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Registers a listener for callbacks when midi events arrive from a midi input.  <a href="#a31e11b7a8596530a87cfcf8e48b978d2">More...</a><br /></td></tr>
<tr class="separator:a31e11b7a8596530a87cfcf8e48b978d2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1338a65adb3849560847f99252adcbd2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a1338a65adb3849560847f99252adcbd2">removeMidiInputCallback</a> (const <a class="el" href="classString.html">String</a> &amp;midiInputDeviceName, <a class="el" href="classMidiInputCallback.html">MidiInputCallback</a> *callback)</td></tr>
<tr class="memdesc:a1338a65adb3849560847f99252adcbd2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Removes a listener that was previously registered with <a class="el" href="classAudioDeviceManager.html#a31e11b7a8596530a87cfcf8e48b978d2" title="Registers a listener for callbacks when midi events arrive from a midi input. ">addMidiInputCallback()</a>.  <a href="#a1338a65adb3849560847f99252adcbd2">More...</a><br /></td></tr>
<tr class="separator:a1338a65adb3849560847f99252adcbd2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a02d957a7dfc854c2de56278db62a171f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a02d957a7dfc854c2de56278db62a171f">setDefaultMidiOutput</a> (const <a class="el" href="classString.html">String</a> &amp;deviceName)</td></tr>
<tr class="memdesc:a02d957a7dfc854c2de56278db62a171f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets a midi output device to use as the default.  <a href="#a02d957a7dfc854c2de56278db62a171f">More...</a><br /></td></tr>
<tr class="separator:a02d957a7dfc854c2de56278db62a171f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad3796e84d5b112f78f8ffc02d7b9f8be"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classString.html">String</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#ad3796e84d5b112f78f8ffc02d7b9f8be">getDefaultMidiOutputName</a> () const noexcept</td></tr>
<tr class="memdesc:ad3796e84d5b112f78f8ffc02d7b9f8be"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the name of the default midi output.  <a href="#ad3796e84d5b112f78f8ffc02d7b9f8be">More...</a><br /></td></tr>
<tr class="separator:ad3796e84d5b112f78f8ffc02d7b9f8be"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4c3518c6e06fc752d065ff8dd4c9e4f1"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classMidiOutput.html">MidiOutput</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a4c3518c6e06fc752d065ff8dd4c9e4f1">getDefaultMidiOutput</a> () const noexcept</td></tr>
<tr class="memdesc:a4c3518c6e06fc752d065ff8dd4c9e4f1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the current default midi output device.  <a href="#a4c3518c6e06fc752d065ff8dd4c9e4f1">More...</a><br /></td></tr>
<tr class="separator:a4c3518c6e06fc752d065ff8dd4c9e4f1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a577475b3171c4d2cf8dbd7a6a48a02ca"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classOwnedArray.html">OwnedArray</a>&lt; <a class="el" href="classAudioIODeviceType.html">AudioIODeviceType</a> &gt; &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a577475b3171c4d2cf8dbd7a6a48a02ca">getAvailableDeviceTypes</a> ()</td></tr>
<tr class="memdesc:a577475b3171c4d2cf8dbd7a6a48a02ca"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns a list of the types of device supported.  <a href="#a577475b3171c4d2cf8dbd7a6a48a02ca">More...</a><br /></td></tr>
<tr class="separator:a577475b3171c4d2cf8dbd7a6a48a02ca"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad7d7e0e64926665b12b62a53082caecc"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#ad7d7e0e64926665b12b62a53082caecc">createAudioDeviceTypes</a> (<a class="el" href="classOwnedArray.html">OwnedArray</a>&lt; <a class="el" href="classAudioIODeviceType.html">AudioIODeviceType</a> &gt; &amp;types)</td></tr>
<tr class="memdesc:ad7d7e0e64926665b12b62a53082caecc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Creates a list of available types.  <a href="#ad7d7e0e64926665b12b62a53082caecc">More...</a><br /></td></tr>
<tr class="separator:ad7d7e0e64926665b12b62a53082caecc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9516ba945a2de06438cb3bd30210b94f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a9516ba945a2de06438cb3bd30210b94f">addAudioDeviceType</a> (<a class="el" href="classAudioIODeviceType.html">AudioIODeviceType</a> *newDeviceType)</td></tr>
<tr class="memdesc:a9516ba945a2de06438cb3bd30210b94f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Adds a new device type to the list of types.  <a href="#a9516ba945a2de06438cb3bd30210b94f">More...</a><br /></td></tr>
<tr class="separator:a9516ba945a2de06438cb3bd30210b94f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab32b74d9dda550d70d47c0cca76fdd25"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#ab32b74d9dda550d70d47c0cca76fdd25">playTestSound</a> ()</td></tr>
<tr class="memdesc:ab32b74d9dda550d70d47c0cca76fdd25"><td class="mdescLeft">&#160;</td><td class="mdescRight">Plays a beep through the current audio device.  <a href="#ab32b74d9dda550d70d47c0cca76fdd25">More...</a><br /></td></tr>
<tr class="separator:ab32b74d9dda550d70d47c0cca76fdd25"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a84226f822c6b65295beb16b973ec30ac"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a84226f822c6b65295beb16b973ec30ac">enableInputLevelMeasurement</a> (bool enableMeasurement) noexcept</td></tr>
<tr class="memdesc:a84226f822c6b65295beb16b973ec30ac"><td class="mdescLeft">&#160;</td><td class="mdescRight">Turns on level-measuring for input channels.  <a href="#a84226f822c6b65295beb16b973ec30ac">More...</a><br /></td></tr>
<tr class="separator:a84226f822c6b65295beb16b973ec30ac"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a51fe04c8fe00ef8fc40a326f2dba7ea6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a51fe04c8fe00ef8fc40a326f2dba7ea6">enableOutputLevelMeasurement</a> (bool enableMeasurement) noexcept</td></tr>
<tr class="memdesc:a51fe04c8fe00ef8fc40a326f2dba7ea6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Turns on level-measuring for output channels.  <a href="#a51fe04c8fe00ef8fc40a326f2dba7ea6">More...</a><br /></td></tr>
<tr class="separator:a51fe04c8fe00ef8fc40a326f2dba7ea6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aedbbb2987a9c420951c2a40246367e22"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#aedbbb2987a9c420951c2a40246367e22">getCurrentInputLevel</a> () const noexcept</td></tr>
<tr class="memdesc:aedbbb2987a9c420951c2a40246367e22"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the current input level.  <a href="#aedbbb2987a9c420951c2a40246367e22">More...</a><br /></td></tr>
<tr class="separator:aedbbb2987a9c420951c2a40246367e22"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2127a0c198170f510a6bf54822da7096"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a2127a0c198170f510a6bf54822da7096">getCurrentOutputLevel</a> () const noexcept</td></tr>
<tr class="memdesc:a2127a0c198170f510a6bf54822da7096"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the current output level.  <a href="#a2127a0c198170f510a6bf54822da7096">More...</a><br /></td></tr>
<tr class="separator:a2127a0c198170f510a6bf54822da7096"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1e92ccc57a94f20639bcdfa68b628dc5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classCriticalSection.html">CriticalSection</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a1e92ccc57a94f20639bcdfa68b628dc5">getAudioCallbackLock</a> () noexcept</td></tr>
<tr class="memdesc:a1e92ccc57a94f20639bcdfa68b628dc5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the a lock that can be used to synchronise access to the audio callback.  <a href="#a1e92ccc57a94f20639bcdfa68b628dc5">More...</a><br /></td></tr>
<tr class="separator:a1e92ccc57a94f20639bcdfa68b628dc5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2bdc27c676c875645d4d77b1146dad24"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classCriticalSection.html">CriticalSection</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioDeviceManager.html#a2bdc27c676c875645d4d77b1146dad24">getMidiCallbackLock</a> () noexcept</td></tr>
<tr class="memdesc:a2bdc27c676c875645d4d77b1146dad24"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the a lock that can be used to synchronise access to the midi callback.  <a href="#a2bdc27c676c875645d4d77b1146dad24">More...</a><br /></td></tr>
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<tr class="inherit_header pub_methods_classChangeBroadcaster"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classChangeBroadcaster')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classChangeBroadcaster.html">ChangeBroadcaster</a></td></tr>
<tr class="memitem:a1c8ccfa186a47d58a05e7f1f1576c038 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a1c8ccfa186a47d58a05e7f1f1576c038">ChangeBroadcaster</a> () noexcept</td></tr>
<tr class="memdesc:a1c8ccfa186a47d58a05e7f1f1576c038 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft">&#160;</td><td class="mdescRight">Creates an <a class="el" href="classChangeBroadcaster.html" title="Holds a list of ChangeListeners, and sends messages to them when instructed. ">ChangeBroadcaster</a>.  <a href="classChangeBroadcaster.html#a1c8ccfa186a47d58a05e7f1f1576c038">More...</a><br /></td></tr>
<tr class="separator:a1c8ccfa186a47d58a05e7f1f1576c038 inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3b2f8465cc6c09c0583c8bdf56319742 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a3b2f8465cc6c09c0583c8bdf56319742">~ChangeBroadcaster</a> ()</td></tr>
<tr class="memdesc:a3b2f8465cc6c09c0583c8bdf56319742 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor.  <a href="classChangeBroadcaster.html#a3b2f8465cc6c09c0583c8bdf56319742">More...</a><br /></td></tr>
<tr class="separator:a3b2f8465cc6c09c0583c8bdf56319742 inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad68416fe79a94cd5c99519bdea6c2a06 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#ad68416fe79a94cd5c99519bdea6c2a06">addChangeListener</a> (<a class="el" href="classChangeListener.html">ChangeListener</a> *listener)</td></tr>
<tr class="memdesc:ad68416fe79a94cd5c99519bdea6c2a06 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft">&#160;</td><td class="mdescRight">Registers a listener to receive change callbacks from this broadcaster.  <a href="classChangeBroadcaster.html#ad68416fe79a94cd5c99519bdea6c2a06">More...</a><br /></td></tr>
<tr class="separator:ad68416fe79a94cd5c99519bdea6c2a06 inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae558a26c795278549a63e342bd5f1650 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#ae558a26c795278549a63e342bd5f1650">removeChangeListener</a> (<a class="el" href="classChangeListener.html">ChangeListener</a> *listener)</td></tr>
<tr class="memdesc:ae558a26c795278549a63e342bd5f1650 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft">&#160;</td><td class="mdescRight">Unregisters a listener from the list.  <a href="classChangeBroadcaster.html#ae558a26c795278549a63e342bd5f1650">More...</a><br /></td></tr>
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<tr class="memitem:a6b9c150078318d419debc82e6f22ce58 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a6b9c150078318d419debc82e6f22ce58">removeAllChangeListeners</a> ()</td></tr>
<tr class="memdesc:a6b9c150078318d419debc82e6f22ce58 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft">&#160;</td><td class="mdescRight">Removes all listeners from the list.  <a href="classChangeBroadcaster.html#a6b9c150078318d419debc82e6f22ce58">More...</a><br /></td></tr>
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<tr class="memitem:a10f01d1c0a7fde85355321985a682cbd inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a10f01d1c0a7fde85355321985a682cbd">sendChangeMessage</a> ()</td></tr>
<tr class="memdesc:a10f01d1c0a7fde85355321985a682cbd inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft">&#160;</td><td class="mdescRight">Causes an asynchronous change message to be sent to all the registered listeners.  <a href="classChangeBroadcaster.html#a10f01d1c0a7fde85355321985a682cbd">More...</a><br /></td></tr>
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<tr class="memitem:a5d16cd01b9af4bacb1716530af17f77b inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a5d16cd01b9af4bacb1716530af17f77b">sendSynchronousChangeMessage</a> ()</td></tr>
<tr class="memdesc:a5d16cd01b9af4bacb1716530af17f77b inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sends a synchronous change message to all the registered listeners.  <a href="classChangeBroadcaster.html#a5d16cd01b9af4bacb1716530af17f77b">More...</a><br /></td></tr>
<tr class="separator:a5d16cd01b9af4bacb1716530af17f77b inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a78f62ecd57a016f8ba7a6ce55454947d inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a78f62ecd57a016f8ba7a6ce55454947d">dispatchPendingMessages</a> ()</td></tr>
<tr class="memdesc:a78f62ecd57a016f8ba7a6ce55454947d inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft">&#160;</td><td class="mdescRight">If a change message has been sent but not yet dispatched, this will call <a class="el" href="classChangeBroadcaster.html#a5d16cd01b9af4bacb1716530af17f77b" title="Sends a synchronous change message to all the registered listeners. ">sendSynchronousChangeMessage()</a> to make the callback immediately.  <a href="classChangeBroadcaster.html#a78f62ecd57a016f8ba7a6ce55454947d">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Manages the state of some audio and midi i/o devices. </p>
<p>This class keeps tracks of a currently-selected audio device, through with which it continuously streams data from an audio callback, as well as one or more midi inputs.</p>
<p>The idea is that your application will create one global instance of this object, and let it take care of creating and deleting specific types of audio devices internally. So when the device is changed, your callbacks will just keep running without having to worry about this.</p>
<p>The manager can save and reload all of its device settings as XML, which makes it very easy for you to save and reload the audio setup of your application.</p>
<p>And to make it easy to let the user change its settings, there's a component to do just that - the <a class="el" href="classAudioDeviceSelectorComponent.html" title="A component containing controls to let the user change the audio settings of an AudioDeviceManager ob...">AudioDeviceSelectorComponent</a> class, which contains a set of device selection/sample-rate/latency controls.</p>
<p>To use an <a class="el" href="classAudioDeviceManager.html" title="Manages the state of some audio and midi i/o devices. ">AudioDeviceManager</a>, create one, and use <a class="el" href="classAudioDeviceManager.html#a4c6d8a76a270a6e4ca0537093f447b44" title="Opens a set of audio devices ready for use. ">initialise()</a> to set it up. Then call <a class="el" href="classAudioDeviceManager.html#acf3977dcc83f22b7f51091d7ff7b8aff" title="Registers an audio callback to be used. ">addAudioCallback()</a> to register your audio callback with it, and use that to process your audio data.</p>
<p>The manager also acts as a handy hub for incoming midi messages, allowing a listener to register for messages from either a specific midi device, or from whatever the current default midi input device is. The listener then doesn't have to worry about re-registering with different midi devices if they are changed or deleted.</p>
<p>And yet another neat trick is that amount of CPU time being used is measured and available with the <a class="el" href="classAudioDeviceManager.html#a79563c9d2cc87d059d8b101515e8dee1" title="Returns the average proportion of available CPU being spent inside the audio callbacks. ">getCpuUsage()</a> method.</p>
<p>The <a class="el" href="classAudioDeviceManager.html" title="Manages the state of some audio and midi i/o devices. ">AudioDeviceManager</a> is a <a class="el" href="classChangeBroadcaster.html" title="Holds a list of ChangeListeners, and sends messages to them when instructed. ">ChangeBroadcaster</a>, and will send a change message to listeners whenever one of its settings is changed.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceSelectorComponent.html" title="A component containing controls to let the user change the audio settings of an AudioDeviceManager ob...">AudioDeviceSelectorComponent</a>, <a class="el" href="classAudioIODevice.html" title="Base class for an audio device with synchronised input and output channels. ">AudioIODevice</a>, <a class="el" href="classAudioIODeviceType.html" title="Represents a type of audio driver, such as DirectSound, ASIO, CoreAudio, etc. ">AudioIODeviceType</a> </dd></dl>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#accab16a03e809121d56e8b272125f3ea">&sect;&nbsp;</a></span>AudioDeviceManager()</h2>

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<p>Creates a default <a class="el" href="classAudioDeviceManager.html" title="Manages the state of some audio and midi i/o devices. ">AudioDeviceManager</a>. </p>
<p>Initially no audio device will be selected. You should call the <a class="el" href="classAudioDeviceManager.html#a4c6d8a76a270a6e4ca0537093f447b44" title="Opens a set of audio devices ready for use. ">initialise()</a> method and register an audio callback with setAudioCallback() before it'll be able to actually make any noise. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#aba2ff8bbc69b9434dfc90c3a7bc09d6a">&sect;&nbsp;</a></span>~AudioDeviceManager()</h2>

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<p>Destructor. </p>

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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a4c6d8a76a270a6e4ca0537093f447b44">&sect;&nbsp;</a></span>initialise()</h2>

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          <td class="memname"><a class="el" href="classString.html">String</a> AudioDeviceManager::initialise </td>
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          <td class="paramtype">const <a class="el" href="structAudioDeviceManager_1_1AudioDeviceSetup.html">AudioDeviceSetup</a> *&#160;</td>
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<p>Opens a set of audio devices ready for use. </p>
<p>This will attempt to open either a default audio device, or one that was previously saved as XML.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">numInputChannelsNeeded</td><td>the maximum number of input channels your app would like to use (the actual number of channels opened may be less than the number requested) </td></tr>
    <tr><td class="paramname">numOutputChannelsNeeded</td><td>the maximum number of output channels your app would like to use (the actual number of channels opened may be less than the number requested) </td></tr>
    <tr><td class="paramname">savedState</td><td>either a previously-saved state that was produced by <a class="el" href="classAudioDeviceManager.html#a9898f5fc97622b0887bd60d838683293" title="Returns some XML representing the current state of the manager. ">createStateXml()</a>, or nullptr if you want the manager to choose the best device to open. </td></tr>
    <tr><td class="paramname">selectDefaultDeviceOnFailure</td><td>if true, then if the device specified in the XML fails to open, then a default device will be used instead. If false, then on failure, no device is opened. </td></tr>
    <tr><td class="paramname">preferredDefaultDeviceName</td><td>if this is not empty, and there's a device with this name, then that will be used as the default device (assuming that there wasn't one specified in the XML). The string can actually be a simple wildcard, containing "*" and "?" characters </td></tr>
    <tr><td class="paramname">preferredSetupOptions</td><td>if this is non-null, the structure will be used as the set of preferred settings when opening the device. If you use this parameter, the preferredDefaultDeviceName field will be ignored</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>an error message if anything went wrong, or an empty string if it worked ok. </dd></dl>

<p>Referenced by <a class="el" href="classStandalonePluginHolder.html#a0b2e109349c027391f470318bd4d23ba">StandalonePluginHolder::reloadAudioDeviceState()</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#aed646db44c76466d8d0e288d56e50691">&sect;&nbsp;</a></span>initialiseWithDefaultDevices()</h2>

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<p>Resets everything to a default device setup, clearing any stored settings. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a9898f5fc97622b0887bd60d838683293">&sect;&nbsp;</a></span>createStateXml()</h2>

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<p>Returns some XML representing the current state of the manager. </p>
<p>This stores the current device, its samplerate, block size, etc, and can be restored later with <a class="el" href="classAudioDeviceManager.html#a4c6d8a76a270a6e4ca0537093f447b44" title="Opens a set of audio devices ready for use. ">initialise()</a>.</p>
<p>Note that this can return a null pointer if no settings have been explicitly changed (i.e. if the device manager has just been left in its default state). </p>

<p>Referenced by <a class="el" href="classStandalonePluginHolder.html#a3591021b8495b1d2dddb6ff9a2405209">StandalonePluginHolder::saveAudioDeviceState()</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a9363240e6dcfe1462c6b97366e03ae7d">&sect;&nbsp;</a></span>getAudioDeviceSetup()</h2>

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<p>Returns the current device properties that are in use. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#aef0249d178aa5448ad2e949ae059c461" title="Changes the current device or its settings. ">setAudioDeviceSetup</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aef0249d178aa5448ad2e949ae059c461">&sect;&nbsp;</a></span>setAudioDeviceSetup()</h2>

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<p>Changes the current device or its settings. </p>
<p>If you want to change a device property, like the current sample rate or block size, you can call <a class="el" href="classAudioDeviceManager.html#a9363240e6dcfe1462c6b97366e03ae7d" title="Returns the current device properties that are in use. ">getAudioDeviceSetup()</a> to retrieve the current settings, then tweak the appropriate fields in the <a class="el" href="structAudioDeviceManager_1_1AudioDeviceSetup.html" title="This structure holds a set of properties describing the current audio setup. ">AudioDeviceSetup</a> structure, and pass it back into this method to apply the new settings.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">newSetup</td><td>the settings that you'd like to use </td></tr>
    <tr><td class="paramname">treatAsChosenDevice</td><td>if this is true and if the device opens correctly, these new settings will be taken as having been explicitly chosen by the user, and the next time <a class="el" href="classAudioDeviceManager.html#a9898f5fc97622b0887bd60d838683293" title="Returns some XML representing the current state of the manager. ">createStateXml()</a> is called, these settings will be returned. If it's false, then the device is treated as a temporary or default device, and a call to <a class="el" href="classAudioDeviceManager.html#a9898f5fc97622b0887bd60d838683293" title="Returns some XML representing the current state of the manager. ">createStateXml()</a> will return either the last settings that were made with treatAsChosenDevice as true, or the last XML settings that were passed into <a class="el" href="classAudioDeviceManager.html#a4c6d8a76a270a6e4ca0537093f447b44" title="Opens a set of audio devices ready for use. ">initialise()</a>. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>an error message if anything went wrong, or an empty string if it worked ok.</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#a9363240e6dcfe1462c6b97366e03ae7d" title="Returns the current device properties that are in use. ">getAudioDeviceSetup</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ad7ab4d5ba626a08098bb77a6164321a1">&sect;&nbsp;</a></span>getCurrentAudioDevice()</h2>

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<p>Returns the currently-active audio device. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#aa685f7ecd5e85c243ec69d969b370532">&sect;&nbsp;</a></span>getCurrentAudioDeviceType()</h2>

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<p>Returns the type of audio device currently in use. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#a49e34c1ed60dafcebefc55d12f9175ad" title="Changes the class of audio device being used. ">setCurrentAudioDeviceType</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ac291af583a101ca2da2cebb68155d3dd">&sect;&nbsp;</a></span>getCurrentDeviceTypeObject()</h2>

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<p>Returns the currently active audio device type object. </p>
<p>Don't keep a copy of this pointer - it's owned by the device manager and could change at any time. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a49e34c1ed60dafcebefc55d12f9175ad">&sect;&nbsp;</a></span>setCurrentAudioDeviceType()</h2>

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<p>Changes the class of audio device being used. </p>
<p>This switches between, e.g. ASIO and DirectSound. On the Mac you probably won't ever call this because there's only one type: CoreAudio.</p>
<p>For a list of types, see <a class="el" href="classAudioDeviceManager.html#a577475b3171c4d2cf8dbd7a6a48a02ca" title="Returns a list of the types of device supported. ">getAvailableDeviceTypes()</a>. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#af9829fcacafb4a395d084b34cdb8391c">&sect;&nbsp;</a></span>closeAudioDevice()</h2>

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<p>Closes the currently-open device. </p>
<p>You can call <a class="el" href="classAudioDeviceManager.html#ac46693f5b78c06357b16bf5e95560605" title="Tries to reload the last audio device that was running. ">restartLastAudioDevice()</a> later to reopen it in the same state that it was just in. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ac46693f5b78c06357b16bf5e95560605">&sect;&nbsp;</a></span>restartLastAudioDevice()</h2>

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<p>Tries to reload the last audio device that was running. </p>
<p>Note that this only reloads the last device that was running before <a class="el" href="classAudioDeviceManager.html#af9829fcacafb4a395d084b34cdb8391c" title="Closes the currently-open device. ">closeAudioDevice()</a> was called - it doesn't reload any kind of saved-state, and can only be called after a device has been opened with SetAudioDevice().</p>
<p>If a device is already open, this call will do nothing. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#acf3977dcc83f22b7f51091d7ff7b8aff">&sect;&nbsp;</a></span>addAudioCallback()</h2>

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<p>Registers an audio callback to be used. </p>
<p>The manager will redirect callbacks from whatever audio device is currently in use to all registered callback objects. If more than one callback is active, they will all be given the same input data, and their outputs will be summed.</p>
<p>If necessary, this method will invoke audioDeviceAboutToStart() on the callback object before returning.</p>
<p>To remove a callback, use <a class="el" href="classAudioDeviceManager.html#af6d672043bfc5ca423ea0ca41b5ad2d1" title="Deregisters a previously added callback. ">removeAudioCallback()</a>. </p>

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<p>Deregisters a previously added callback. </p>
<p>If necessary, this method will invoke audioDeviceStopped() on the callback object before returning.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#acf3977dcc83f22b7f51091d7ff7b8aff" title="Registers an audio callback to be used. ">addAudioCallback</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a79563c9d2cc87d059d8b101515e8dee1">&sect;&nbsp;</a></span>getCpuUsage()</h2>

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<p>Returns the average proportion of available CPU being spent inside the audio callbacks. </p>
<dl class="section return"><dt>Returns</dt><dd>A value between 0 and 1.0 to indicate the approximate proportion of CPU time spent in the callbacks. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a5c16cde5d7c4c49dd9b6d00cc17ba481">&sect;&nbsp;</a></span>setMidiInputEnabled()</h2>

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<p>Enables or disables a midi input device. </p>
<p>The list of devices can be obtained with the <a class="el" href="classMidiInput.html#ab2e0e7bb96700f9e2ecd77bc3b96d42f" title="Returns a list of the available midi input devices. ">MidiInput::getDevices()</a> method.</p>
<p>Any incoming messages from enabled input devices will be forwarded on to all the listeners that have been registered with the <a class="el" href="classAudioDeviceManager.html#a31e11b7a8596530a87cfcf8e48b978d2" title="Registers a listener for callbacks when midi events arrive from a midi input. ">addMidiInputCallback()</a> method. They can either register for messages from a particular device, or from just the "default" midi input.</p>
<p>Routing the midi input via an <a class="el" href="classAudioDeviceManager.html" title="Manages the state of some audio and midi i/o devices. ">AudioDeviceManager</a> means that when a listener registers for the default midi input, this default device can be changed by the manager without the listeners having to know about it or re-register.</p>
<p>It also means that a listener can stay registered for a midi input that is disabled or not present, so that when the input is re-enabled, the listener will start receiving messages again.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#a31e11b7a8596530a87cfcf8e48b978d2" title="Registers a listener for callbacks when midi events arrive from a midi input. ">addMidiInputCallback</a>, <a class="el" href="classAudioDeviceManager.html#a036af6a982f687ace34b3241069cd233" title="Returns true if a given midi input device is being used. ">isMidiInputEnabled</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a036af6a982f687ace34b3241069cd233">&sect;&nbsp;</a></span>isMidiInputEnabled()</h2>

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<p>Returns true if a given midi input device is being used. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#a5c16cde5d7c4c49dd9b6d00cc17ba481" title="Enables or disables a midi input device. ">setMidiInputEnabled</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a31e11b7a8596530a87cfcf8e48b978d2">&sect;&nbsp;</a></span>addMidiInputCallback()</h2>

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<p>Registers a listener for callbacks when midi events arrive from a midi input. </p>
<p>The device name can be empty to indicate that it wants to receive all incoming events from all the enabled MIDI inputs. Or it can be the name of one of the MIDI input devices if it just wants the events from that device. (see <a class="el" href="classMidiInput.html#ab2e0e7bb96700f9e2ecd77bc3b96d42f" title="Returns a list of the available midi input devices. ">MidiInput::getDevices()</a> for the list of device names).</p>
<p>Only devices which are enabled (see the <a class="el" href="classAudioDeviceManager.html#a5c16cde5d7c4c49dd9b6d00cc17ba481" title="Enables or disables a midi input device. ">setMidiInputEnabled()</a> method) will have their events forwarded on to listeners. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a1338a65adb3849560847f99252adcbd2">&sect;&nbsp;</a></span>removeMidiInputCallback()</h2>

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<p>Removes a listener that was previously registered with <a class="el" href="classAudioDeviceManager.html#a31e11b7a8596530a87cfcf8e48b978d2" title="Registers a listener for callbacks when midi events arrive from a midi input. ">addMidiInputCallback()</a>. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a02d957a7dfc854c2de56278db62a171f">&sect;&nbsp;</a></span>setDefaultMidiOutput()</h2>

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<p>Sets a midi output device to use as the default. </p>
<p>The list of devices can be obtained with the <a class="el" href="classMidiOutput.html#a59a303f5b44aa772903984818b6b7275" title="Returns a list of the available midi output devices. ">MidiOutput::getDevices()</a> method.</p>
<p>The specified device will be opened automatically and can be retrieved with the <a class="el" href="classAudioDeviceManager.html#a4c3518c6e06fc752d065ff8dd4c9e4f1" title="Returns the current default midi output device. ">getDefaultMidiOutput()</a> method.</p>
<p>Pass in an empty string to deselect all devices. For the default device, you can use <a class="el" href="classMidiOutput.html#a59a303f5b44aa772903984818b6b7275" title="Returns a list of the available midi output devices. ">MidiOutput::getDevices()</a> [<a class="el" href="classMidiOutput.html#a5459a18d9b1b9a5fe27e95e6e9e06a87" title="Returns the index of the default midi output device to use. ">MidiOutput::getDefaultDeviceIndex()</a>].</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#a4c3518c6e06fc752d065ff8dd4c9e4f1" title="Returns the current default midi output device. ">getDefaultMidiOutput</a>, <a class="el" href="classAudioDeviceManager.html#ad3796e84d5b112f78f8ffc02d7b9f8be" title="Returns the name of the default midi output. ">getDefaultMidiOutputName</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ad3796e84d5b112f78f8ffc02d7b9f8be">&sect;&nbsp;</a></span>getDefaultMidiOutputName()</h2>

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<p>Returns the name of the default midi output. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#a02d957a7dfc854c2de56278db62a171f" title="Sets a midi output device to use as the default. ">setDefaultMidiOutput</a>, <a class="el" href="classAudioDeviceManager.html#a4c3518c6e06fc752d065ff8dd4c9e4f1" title="Returns the current default midi output device. ">getDefaultMidiOutput</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a4c3518c6e06fc752d065ff8dd4c9e4f1">&sect;&nbsp;</a></span>getDefaultMidiOutput()</h2>

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<p>Returns the current default midi output device. </p>
<p>If no device has been selected, or the device can't be opened, this will return nullptr. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#ad3796e84d5b112f78f8ffc02d7b9f8be" title="Returns the name of the default midi output. ">getDefaultMidiOutputName</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a577475b3171c4d2cf8dbd7a6a48a02ca">&sect;&nbsp;</a></span>getAvailableDeviceTypes()</h2>

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<p>Returns a list of the types of device supported. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ad7d7e0e64926665b12b62a53082caecc">&sect;&nbsp;</a></span>createAudioDeviceTypes()</h2>

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<p>Creates a list of available types. </p>
<p>This will add a set of new <a class="el" href="classAudioIODeviceType.html" title="Represents a type of audio driver, such as DirectSound, ASIO, CoreAudio, etc. ">AudioIODeviceType</a> objects to the specified list, to represent each available types of device.</p>
<p>You can override this if your app needs to do something specific, like avoid using DirectSound devices, etc. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a9516ba945a2de06438cb3bd30210b94f">&sect;&nbsp;</a></span>addAudioDeviceType()</h2>

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<p>Adds a new device type to the list of types. </p>
<p>The manager will take ownership of the object that is passed-in. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ab32b74d9dda550d70d47c0cca76fdd25">&sect;&nbsp;</a></span>playTestSound()</h2>

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<p>Plays a beep through the current audio device. </p>
<p>This is here to allow the audio setup UI panels to easily include a "test" button so that the user can check where the audio is coming from. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a84226f822c6b65295beb16b973ec30ac">&sect;&nbsp;</a></span>enableInputLevelMeasurement()</h2>

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<p>Turns on level-measuring for input channels. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#aedbbb2987a9c420951c2a40246367e22" title="Returns the current input level. ">getCurrentInputLevel()</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a51fe04c8fe00ef8fc40a326f2dba7ea6">&sect;&nbsp;</a></span>enableOutputLevelMeasurement()</h2>

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<p>Turns on level-measuring for output channels. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#a2127a0c198170f510a6bf54822da7096" title="Returns the current output level. ">getCurrentOutputLevel()</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aedbbb2987a9c420951c2a40246367e22">&sect;&nbsp;</a></span>getCurrentInputLevel()</h2>

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<p>Returns the current input level. </p>
<p>To use this, you must first enable it by calling <a class="el" href="classAudioDeviceManager.html#a84226f822c6b65295beb16b973ec30ac" title="Turns on level-measuring for input channels. ">enableInputLevelMeasurement()</a>. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#a84226f822c6b65295beb16b973ec30ac" title="Turns on level-measuring for input channels. ">enableInputLevelMeasurement()</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a2127a0c198170f510a6bf54822da7096">&sect;&nbsp;</a></span>getCurrentOutputLevel()</h2>

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<p>Returns the current output level. </p>
<p>To use this, you must first enable it by calling <a class="el" href="classAudioDeviceManager.html#a51fe04c8fe00ef8fc40a326f2dba7ea6" title="Turns on level-measuring for output channels. ">enableOutputLevelMeasurement()</a>. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioDeviceManager.html#a51fe04c8fe00ef8fc40a326f2dba7ea6" title="Turns on level-measuring for output channels. ">enableOutputLevelMeasurement()</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a1e92ccc57a94f20639bcdfa68b628dc5">&sect;&nbsp;</a></span>getAudioCallbackLock()</h2>

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          <td class="memname"><a class="el" href="classCriticalSection.html">CriticalSection</a>&amp; AudioDeviceManager::getAudioCallbackLock </td>
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<p>Returns the a lock that can be used to synchronise access to the audio callback. </p>
<p>Obviously while this is locked, you're blocking the audio thread from running, so it must only be used for very brief periods when absolutely necessary. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a2bdc27c676c875645d4d77b1146dad24">&sect;&nbsp;</a></span>getMidiCallbackLock()</h2>

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          <td class="memname"><a class="el" href="classCriticalSection.html">CriticalSection</a>&amp; AudioDeviceManager::getMidiCallbackLock </td>
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<p>Returns the a lock that can be used to synchronise access to the midi callback. </p>
<p>Obviously while this is locked, you're blocking the midi system from running, so it must only be used for very brief periods when absolutely necessary. </p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="juce__AudioDeviceManager_8h.html">juce_AudioDeviceManager.h</a></li>
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