<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>audiodevices.cpp Example File | Qt Multimedia 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtmultimedia-index.html">Qt Multimedia</a></td><td ><a href="qtmultimedia-multimedia-audiodevices-example.html">Audio Devices Example</a></td><td >audiodevices.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtmultimedia-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">audiodevices.cpp Example File</h1> <span class="subtitle">multimedia/audiodevices/audiodevices.cpp</span> <!-- $$$multimedia/audiodevices/audiodevices.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "audiodevices.h"</span> <span class="comment">// Utility functions for converting QAudioFormat fields into text</span> <span class="keyword">static</span> <span class="type">QString</span> toString(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>SampleType sampleType) { <span class="type">QString</span> result(<span class="string">"Unknown"</span>); <span class="keyword">switch</span> (sampleType) { <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>SignedInt: result <span class="operator">=</span> <span class="string">"SignedInt"</span>; <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>UnSignedInt: result <span class="operator">=</span> <span class="string">"UnSignedInt"</span>; <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>Float: result <span class="operator">=</span> <span class="string">"Float"</span>; <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>Unknown: result <span class="operator">=</span> <span class="string">"Unknown"</span>; } <span class="keyword">return</span> result; } <span class="keyword">static</span> <span class="type">QString</span> toString(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>Endian endian) { <span class="type">QString</span> result(<span class="string">"Unknown"</span>); <span class="keyword">switch</span> (endian) { <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>LittleEndian: result <span class="operator">=</span> <span class="string">"LittleEndian"</span>; <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>BigEndian: result <span class="operator">=</span> <span class="string">"BigEndian"</span>; <span class="keyword">break</span>; } <span class="keyword">return</span> result; } AudioDevicesBase<span class="operator">::</span>AudioDevicesBase(<span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QMainWindow</span>(parent) { setupUi(<span class="keyword">this</span>); } AudioDevicesBase<span class="operator">::</span><span class="operator">~</span>AudioDevicesBase() {} AudioTest<span class="operator">::</span>AudioTest(<span class="type">QWidget</span> <span class="operator">*</span>parent) : AudioDevicesBase(parent) { connect(testButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>test); connect(modeBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>activated)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>modeChanged); connect(deviceBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>activated)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>deviceChanged); connect(sampleRateBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>activated)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>sampleRateChanged); connect(channelsBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>activated)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>channelChanged); connect(codecsBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>activated)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>codecChanged); connect(sampleSizesBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>activated)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>sampleSizeChanged); connect(sampleTypesBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>activated)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>sampleTypeChanged); connect(endianBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>activated)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>endianChanged); connect(populateTableButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>AudioTest<span class="operator">::</span>populateTable); modeBox<span class="operator">-</span><span class="operator">></span>setCurrentIndex(<span class="number">0</span>); modeChanged(<span class="number">0</span>); deviceBox<span class="operator">-</span><span class="operator">></span>setCurrentIndex(<span class="number">0</span>); deviceChanged(<span class="number">0</span>); } <span class="type">void</span> AudioTest<span class="operator">::</span>test() { <span class="comment">// tries to set all the settings picked.</span> testResult<span class="operator">-</span><span class="operator">></span>clear(); <span class="keyword">if</span> (<span class="operator">!</span>m_deviceInfo<span class="operator">.</span>isNull()) { <span class="keyword">if</span> (m_deviceInfo<span class="operator">.</span>isFormatSupported(m_settings)) { testResult<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Success"</span>)); nearestSampleRate<span class="operator">-</span><span class="operator">></span>setText(<span class="string">""</span>); nearestChannel<span class="operator">-</span><span class="operator">></span>setText(<span class="string">""</span>); nearestCodec<span class="operator">-</span><span class="operator">></span>setText(<span class="string">""</span>); nearestSampleSize<span class="operator">-</span><span class="operator">></span>setText(<span class="string">""</span>); nearestSampleType<span class="operator">-</span><span class="operator">></span>setText(<span class="string">""</span>); nearestEndian<span class="operator">-</span><span class="operator">></span>setText(<span class="string">""</span>); } <span class="keyword">else</span> { <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span> nearest <span class="operator">=</span> m_deviceInfo<span class="operator">.</span>nearestFormat(m_settings); testResult<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Failed"</span>)); nearestSampleRate<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(nearest<span class="operator">.</span>sampleRate())); nearestChannel<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(nearest<span class="operator">.</span>channelCount())); nearestCodec<span class="operator">-</span><span class="operator">></span>setText(nearest<span class="operator">.</span>codec()); nearestSampleSize<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(nearest<span class="operator">.</span>sampleSize())); nearestSampleType<span class="operator">-</span><span class="operator">></span>setText(toString(nearest<span class="operator">.</span>sampleType())); nearestEndian<span class="operator">-</span><span class="operator">></span>setText(toString(nearest<span class="operator">.</span>byteOrder())); } } <span class="keyword">else</span> testResult<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"No Device"</span>)); } <span class="type">void</span> AudioTest<span class="operator">::</span>modeChanged(<span class="type">int</span> idx) { testResult<span class="operator">-</span><span class="operator">></span>clear(); deviceBox<span class="operator">-</span><span class="operator">></span>clear(); <span class="keyword">const</span> <span class="type"><a href="qaudio.html">QAudio</a></span><span class="operator">::</span>Mode mode <span class="operator">=</span> idx <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span> <span class="operator">?</span> <span class="type"><a href="qaudio.html">QAudio</a></span><span class="operator">::</span>AudioInput : <span class="type"><a href="qaudio.html">QAudio</a></span><span class="operator">::</span>AudioOutput; <span class="keyword">for</span> (<span class="keyword">auto</span> <span class="operator">&</span>deviceInfo: <span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">::</span>availableDevices(mode)) deviceBox<span class="operator">-</span><span class="operator">></span>addItem(deviceInfo<span class="operator">.</span>deviceName()<span class="operator">,</span> qVariantFromValue(deviceInfo)); deviceBox<span class="operator">-</span><span class="operator">></span>setCurrentIndex(<span class="number">0</span>); deviceChanged(<span class="number">0</span>); } <span class="type">void</span> AudioTest<span class="operator">::</span>deviceChanged(<span class="type">int</span> idx) { testResult<span class="operator">-</span><span class="operator">></span>clear(); <span class="keyword">if</span> (deviceBox<span class="operator">-</span><span class="operator">></span>count() <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>) <span class="keyword">return</span>; <span class="comment">// device has changed</span> m_deviceInfo <span class="operator">=</span> deviceBox<span class="operator">-</span><span class="operator">></span>itemData(idx)<span class="operator">.</span>value<span class="operator"><</span><span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">></span>(); sampleRateBox<span class="operator">-</span><span class="operator">></span>clear(); <span class="type">QList</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span> sampleRatez <span class="operator">=</span> m_deviceInfo<span class="operator">.</span>supportedSampleRates(); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> sampleRatez<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) sampleRateBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(sampleRatez<span class="operator">.</span>at(i))); <span class="keyword">if</span> (sampleRatez<span class="operator">.</span>size()) m_settings<span class="operator">.</span>setSampleRate(sampleRatez<span class="operator">.</span>at(<span class="number">0</span>)); channelsBox<span class="operator">-</span><span class="operator">></span>clear(); <span class="type">QList</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span> chz <span class="operator">=</span> m_deviceInfo<span class="operator">.</span>supportedChannelCounts(); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> chz<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) channelsBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(chz<span class="operator">.</span>at(i))); <span class="keyword">if</span> (chz<span class="operator">.</span>size()) m_settings<span class="operator">.</span>setChannelCount(chz<span class="operator">.</span>at(<span class="number">0</span>)); codecsBox<span class="operator">-</span><span class="operator">></span>clear(); <span class="type">QStringList</span> codecs <span class="operator">=</span> m_deviceInfo<span class="operator">.</span>supportedCodecs(); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> codecs<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) codecsBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(codecs<span class="operator">.</span>at(i))); <span class="keyword">if</span> (codecs<span class="operator">.</span>size()) m_settings<span class="operator">.</span>setCodec(codecs<span class="operator">.</span>at(<span class="number">0</span>)); <span class="comment">// Add false to create failed condition!</span> codecsBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"audio/test"</span>); sampleSizesBox<span class="operator">-</span><span class="operator">></span>clear(); <span class="type">QList</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span> sampleSizez <span class="operator">=</span> m_deviceInfo<span class="operator">.</span>supportedSampleSizes(); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> sampleSizez<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) sampleSizesBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(sampleSizez<span class="operator">.</span>at(i))); <span class="keyword">if</span> (sampleSizez<span class="operator">.</span>size()) m_settings<span class="operator">.</span>setSampleSize(sampleSizez<span class="operator">.</span>at(<span class="number">0</span>)); sampleTypesBox<span class="operator">-</span><span class="operator">></span>clear(); <span class="type">QList</span><span class="operator"><</span><span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>SampleType<span class="operator">></span> sampleTypez <span class="operator">=</span> m_deviceInfo<span class="operator">.</span>supportedSampleTypes(); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> sampleTypez<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) sampleTypesBox<span class="operator">-</span><span class="operator">></span>addItem(toString(sampleTypez<span class="operator">.</span>at(i))); <span class="keyword">if</span> (sampleTypez<span class="operator">.</span>size()) m_settings<span class="operator">.</span>setSampleType(sampleTypez<span class="operator">.</span>at(<span class="number">0</span>)); endianBox<span class="operator">-</span><span class="operator">></span>clear(); <span class="type">QList</span><span class="operator"><</span><span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>Endian<span class="operator">></span> endianz <span class="operator">=</span> m_deviceInfo<span class="operator">.</span>supportedByteOrders(); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> endianz<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) endianBox<span class="operator">-</span><span class="operator">></span>addItem(toString(endianz<span class="operator">.</span>at(i))); <span class="keyword">if</span> (endianz<span class="operator">.</span>size()) m_settings<span class="operator">.</span>setByteOrder(endianz<span class="operator">.</span>at(<span class="number">0</span>)); allFormatsTable<span class="operator">-</span><span class="operator">></span>clearContents(); } <span class="type">void</span> AudioTest<span class="operator">::</span>populateTable() { <span class="type">int</span> row <span class="operator">=</span> <span class="number">0</span>; <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span> format; <span class="keyword">for</span> (<span class="keyword">auto</span> codec: m_deviceInfo<span class="operator">.</span>supportedCodecs()) { format<span class="operator">.</span>setCodec(codec); <span class="keyword">for</span> (<span class="keyword">auto</span> sampleRate: m_deviceInfo<span class="operator">.</span>supportedSampleRates()) { format<span class="operator">.</span>setSampleRate(sampleRate); <span class="keyword">for</span> (<span class="keyword">auto</span> channels: m_deviceInfo<span class="operator">.</span>supportedChannelCounts()) { format<span class="operator">.</span>setChannelCount(channels); <span class="keyword">for</span> (<span class="keyword">auto</span> sampleType: m_deviceInfo<span class="operator">.</span>supportedSampleTypes()) { format<span class="operator">.</span>setSampleType(sampleType); <span class="keyword">for</span> (<span class="keyword">auto</span> sampleSize: m_deviceInfo<span class="operator">.</span>supportedSampleSizes()) { format<span class="operator">.</span>setSampleSize(sampleSize); <span class="keyword">for</span> (<span class="keyword">auto</span> endian: m_deviceInfo<span class="operator">.</span>supportedByteOrders()) { format<span class="operator">.</span>setByteOrder(endian); <span class="keyword">if</span> (m_deviceInfo<span class="operator">.</span>isFormatSupported(format)) { allFormatsTable<span class="operator">-</span><span class="operator">></span>setRowCount(row <span class="operator">+</span> <span class="number">1</span>); <span class="type">QTableWidgetItem</span> <span class="operator">*</span>codecItem <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTableWidgetItem</span>(format<span class="operator">.</span>codec()); allFormatsTable<span class="operator">-</span><span class="operator">></span>setItem(row<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> codecItem); <span class="type">QTableWidgetItem</span> <span class="operator">*</span>sampleRateItem <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTableWidgetItem</span>(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(format<span class="operator">.</span>sampleRate())); allFormatsTable<span class="operator">-</span><span class="operator">></span>setItem(row<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> sampleRateItem); <span class="type">QTableWidgetItem</span> <span class="operator">*</span>channelsItem <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTableWidgetItem</span>(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(format<span class="operator">.</span>channelCount())); allFormatsTable<span class="operator">-</span><span class="operator">></span>setItem(row<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> channelsItem); <span class="type">QTableWidgetItem</span> <span class="operator">*</span>sampleTypeItem <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTableWidgetItem</span>(toString(format<span class="operator">.</span>sampleType())); allFormatsTable<span class="operator">-</span><span class="operator">></span>setItem(row<span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> sampleTypeItem); <span class="type">QTableWidgetItem</span> <span class="operator">*</span>sampleSizeItem <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTableWidgetItem</span>(<span class="type">QString</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(format<span class="operator">.</span>sampleSize())); allFormatsTable<span class="operator">-</span><span class="operator">></span>setItem(row<span class="operator">,</span> <span class="number">4</span><span class="operator">,</span> sampleSizeItem); <span class="type">QTableWidgetItem</span> <span class="operator">*</span>byteOrderItem <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTableWidgetItem</span>(toString(format<span class="operator">.</span>byteOrder())); allFormatsTable<span class="operator">-</span><span class="operator">></span>setItem(row<span class="operator">,</span> <span class="number">5</span><span class="operator">,</span> byteOrderItem); <span class="operator">+</span><span class="operator">+</span>row; } } } } } } } } <span class="type">void</span> AudioTest<span class="operator">::</span>sampleRateChanged(<span class="type">int</span> idx) { <span class="comment">// sample rate has changed</span> m_settings<span class="operator">.</span>setSampleRate(sampleRateBox<span class="operator">-</span><span class="operator">></span>itemText(idx)<span class="operator">.</span>toInt()); } <span class="type">void</span> AudioTest<span class="operator">::</span>channelChanged(<span class="type">int</span> idx) { m_settings<span class="operator">.</span>setChannelCount(channelsBox<span class="operator">-</span><span class="operator">></span>itemText(idx)<span class="operator">.</span>toInt()); } <span class="type">void</span> AudioTest<span class="operator">::</span>codecChanged(<span class="type">int</span> idx) { m_settings<span class="operator">.</span>setCodec(codecsBox<span class="operator">-</span><span class="operator">></span>itemText(idx)); } <span class="type">void</span> AudioTest<span class="operator">::</span>sampleSizeChanged(<span class="type">int</span> idx) { m_settings<span class="operator">.</span>setSampleSize(sampleSizesBox<span class="operator">-</span><span class="operator">></span>itemText(idx)<span class="operator">.</span>toInt()); } <span class="type">void</span> AudioTest<span class="operator">::</span>sampleTypeChanged(<span class="type">int</span> idx) { <span class="keyword">switch</span> (sampleTypesBox<span class="operator">-</span><span class="operator">></span>itemText(idx)<span class="operator">.</span>toInt()) { <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>SignedInt: m_settings<span class="operator">.</span>setSampleType(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>SignedInt); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>UnSignedInt: m_settings<span class="operator">.</span>setSampleType(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>UnSignedInt); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>Float: m_settings<span class="operator">.</span>setSampleType(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>Float); } } <span class="type">void</span> AudioTest<span class="operator">::</span>endianChanged(<span class="type">int</span> idx) { <span class="keyword">switch</span> (endianBox<span class="operator">-</span><span class="operator">></span>itemText(idx)<span class="operator">.</span>toInt()) { <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>LittleEndian: m_settings<span class="operator">.</span>setByteOrder(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>LittleEndian); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>BigEndian: m_settings<span class="operator">.</span>setByteOrder(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>BigEndian); } } </pre> </div> <!-- @@@multimedia/audiodevices/audiodevices.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>