6 files changed, 284 insertions, 0 deletions
diff --git a/examples/charts/audio/audio.pro b/examples/charts/audio/audio.pro
new file mode 100644
index 00000000..6a3b6917
--- /dev/null
+++ b/examples/charts/audio/audio.pro
@@ -0,0 +1,15 @@
+!include( ../examples.pri ) {
+ error( "Couldn't find the examples.pri file!" )
+}
+
+QT += multimedia
+
+TARGET = audio
+TEMPLATE = app
+
+SOURCES += main.cpp\
+        widget.cpp \
+    xyseriesiodevice.cpp
+
+HEADERS  += widget.h \
+    xyseriesiodevice.h
diff --git a/examples/charts/audio/main.cpp b/examples/charts/audio/main.cpp
new file mode 100644
index 00000000..dd9069df
--- /dev/null
+++ b/examples/charts/audio/main.cpp
@@ -0,0 +1,31 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 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 Qt Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** 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
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+#include "widget.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    Widget w;
+    w.show();
+    
+    return a.exec();
+}
diff --git a/examples/charts/audio/widget.cpp b/examples/charts/audio/widget.cpp
new file mode 100644
index 00000000..6cd5d442
--- /dev/null
+++ b/examples/charts/audio/widget.cpp
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 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 Qt Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** 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
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "widget.h"
+#include <QAudioDeviceInfo>
+#include <QAudioInput>
+#include <QChartView>
+#include <QLineSeries>
+#include <QChart>
+#include <QVBoxLayout>
+#include <QValueAxis>
+#include "xyseriesiodevice.h"
+
+QT_CHARTS_USE_NAMESPACE
+
+Widget::Widget(QWidget *parent)
+    : QWidget(parent),
+      m_device(0),
+      m_chart(0),
+      m_series(0),
+      m_audioInput(0)
+{
+    m_chart = new QChart;
+    QChartView *chartView = new QChartView(m_chart);
+    chartView->setMinimumSize(800, 600);
+    m_series = new QLineSeries;
+    m_chart->addSeries(m_series);
+    QValueAxis *axisX = new QValueAxis;
+    axisX->setRange(0, 2000);
+    axisX->setLabelFormat("%g");
+    axisX->setTitleText("Samples");
+    QValueAxis *axisY = new QValueAxis;
+    axisY->setRange(-1, 1);
+    axisY->setTitleText("Audio level");
+    m_chart->setAxisX(axisX, m_series);
+    m_chart->setAxisY(axisY, m_series);
+    m_chart->legend()->hide();
+    m_chart->setTitle("Data from the microphone");
+
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addWidget(chartView);
+    setLayout(mainLayout);
+
+    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);
+
+    m_device = new XYSeriesIODevice(m_series, this);
+    m_device->open(QIODevice::WriteOnly);
+
+    m_audioInput->start(m_device);
+}
+
+Widget::~Widget()
+{
+    m_audioInput->stop();
+    m_device->close();
+}
diff --git a/examples/charts/audio/widget.h b/examples/charts/audio/widget.h
new file mode 100644
index 00000000..6f745069
--- /dev/null
+++ b/examples/charts/audio/widget.h
@@ -0,0 +1,52 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 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 Qt Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** 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
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef WIDGET_H
+#define WIDGET_H
+
+#include <QWidget>
+#include <QChartGlobal>
+
+QT_CHARTS_BEGIN_NAMESPACE
+class QLineSeries;
+class QChart;
+QT_CHARTS_END_NAMESPACE
+
+QT_CHARTS_USE_NAMESPACE
+
+class XYSeriesIODevice;
+class QAudioInput;
+
+class Widget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    Widget(QWidget *parent = 0);
+    ~Widget();
+
+private:
+    XYSeriesIODevice *m_device;
+    QChart *m_chart;
+    QLineSeries *m_series;
+    QAudioInput *m_audioInput;
+};
+
+#endif // WIDGET_H
diff --git a/examples/charts/audio/xyseriesiodevice.cpp b/examples/charts/audio/xyseriesiodevice.cpp
new file mode 100644
index 00000000..5440771f
--- /dev/null
+++ b/examples/charts/audio/xyseriesiodevice.cpp
@@ -0,0 +1,57 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 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 Qt Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** 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
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "xyseriesiodevice.h"
+#include <QXYSeries>
+
+XYSeriesIODevice::XYSeriesIODevice(QXYSeries * series, QObject *parent) :
+    QIODevice(parent),
+    m_series(series)
+{
+}
+
+qint64 XYSeriesIODevice::readData(char * data, qint64 maxSize)
+{
+    Q_UNUSED(data)
+    Q_UNUSED(maxSize)
+    return -1;
+}
+
+qint64 XYSeriesIODevice::writeData(const char * data, qint64 maxSize)
+{
+    qint64 range = 2000;
+    QList<QPointF> oldPoints = m_series->points();
+    QList<QPointF> points;
+    int resolution = 4;
+
+    if (oldPoints.count() < range) {
+        points = m_series->points();
+    } else {
+        for (int i = maxSize/resolution; i < oldPoints.count(); i++)
+            points.append(QPointF(i - maxSize/resolution, oldPoints.at(i).y()));
+    }
+
+    qint64 size = points.count();
+    for (int k = 0; k < maxSize/resolution; k++)
+        points.append(QPointF(k + size, ((quint8)data[resolution * k] - 128)/128.0));
+
+    m_series->replace(points);
+    return maxSize;
+}
diff --git a/examples/charts/audio/xyseriesiodevice.h b/examples/charts/audio/xyseriesiodevice.h
new file mode 100644
index 00000000..6e504b08
--- /dev/null
+++ b/examples/charts/audio/xyseriesiodevice.h
@@ -0,0 +1,47 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 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 Qt Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** 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
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef XYSERIESIODEVICE_H
+#define XYSERIESIODEVICE_H
+
+#include <QIODevice>
+#include <QChartGlobal>
+
+QT_CHARTS_BEGIN_NAMESPACE
+class QXYSeries;
+QT_CHARTS_END_NAMESPACE
+
+QT_CHARTS_USE_NAMESPACE
+
+class XYSeriesIODevice : public QIODevice
+{
+    Q_OBJECT
+public:
+    explicit XYSeriesIODevice(QXYSeries * series, QObject *parent = 0);
+
+protected:
+    qint64 readData(char * data, qint64 maxSize);
+    qint64 writeData(const char * data, qint64 maxSize);
+
+private:
+    QXYSeries *m_series;
+};
+
+#endif // XYSERIESIODEVICE_H