1 files changed, 78 insertions, 0 deletions
diff --git a/examples/audiolevels/audiolevels.cpp b/examples/audiolevels/audiolevels.cpp
new file mode 100644
index 00000000..e1788936
--- /dev/null
+++ b/examples/audiolevels/audiolevels.cpp
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the QtDataVisualization module.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+**
+****************************************************************************/
+
+#include "audiolevelsiodevice.h"
+#include "audiolevels.h"
+
+#include <QtDataVisualization/qbardataproxy.h>
+#include <QtDataVisualization/q3dvalueaxis.h>
+#include <QtDataVisualization/q3dscene.h>
+#include <QtDataVisualization/q3dcamera.h>
+
+#include <QAudioDeviceInfo>
+#include <QAudioInput>
+
+QT_DATAVISUALIZATION_USE_NAMESPACE
+
+AudioLevels::AudioLevels(Q3DBars *graph, QObject *parent)
+    : QObject(parent),
+      m_graph(graph),
+      m_device(0),
+      m_audioInput(0)
+{
+    // Set up the graph
+    m_graph->setBarThickness(0.5);
+    m_graph->setBarSpacing(QSizeF(0.0, 1.0));
+    m_graph->setGridVisible(false);
+    m_graph->setBackgroundVisible(false);
+    m_graph->valueAxis()->setRange(0.0, 2.0);
+    m_graph->setShadowQuality(QDataVis::ShadowQualityNone);
+    m_graph->scene()->activeCamera()->setCameraPosition(-20.0, 10.0, 20);
+    m_graph->setTheme(QDataVis::ThemeIsabelle);
+    m_graph->setBarType(QDataVis::MeshStyleBars);
+
+    //! [0]
+    QAudioFormat formatAudio;
+    formatAudio.setSampleRate(8000);
+    formatAudio.setChannelCount(1);
+    formatAudio.setSampleSize(8);
+    formatAudio.setCodec("audio/pcm");
+    formatAudio.setByteOrder(QAudioFormat::LittleEndian);
+    formatAudio.setSampleType(QAudioFormat::UnSignedInt);
+
+    QAudioDeviceInfo inputDevices = QAudioDeviceInfo::defaultInputDevice();
+    m_audioInput = new QAudioInput(inputDevices, formatAudio, this);
+#ifdef Q_OS_MAC
+    // Mac seems to wait for entire buffer to fill before calling writeData, so use smaller buffer
+    m_audioInput->setBufferSize(256);
+#else
+    m_audioInput->setBufferSize(1024);
+#endif
+
+    m_device = new AudioLevelsIODevice(m_graph->activeDataProxy(), this);
+    m_device->open(QIODevice::WriteOnly);
+
+    m_audioInput->start(m_device);
+    //! [0]
+}
+
+AudioLevels::~AudioLevels()
+{
+    m_audioInput->stop();
+    m_device->close();
+}