HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · demos/audio/widget.cpp

removed uitest app - not needed

Marek Rosa - - Load All Authors

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             widget.cpp
        
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             / demos / audio / widget.cpp
          
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        Marek Rosa
    
Added audio input demo

              r2155
            
      #include "widget.h"

      #include <QAudioDeviceInfo>

      #include <QAudioInput>

      #include <QChartView>

      #include <QLineSeries>

      #include <QChart>

      #include <QVBoxLayout>

      #include <QValueAxis>

      #include "xyseriesiodevice.h"

      QTCOMMERCIALCHART_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;

        Marek Rosa
    
Added axes titles to audio example and decreased the number of samples on chart to 2000

              r2214
            
          axisX->setRange(0, 2000);

          axisX->setLabelFormat("%g");

          axisX->setTitle("Samples");

        Marek Rosa
    
Added audio input demo

              r2155
            
          QValueAxis *axisY = new QValueAxis;

        Marek Rosa
    
Added axes titles to audio example and decreased the number of samples on chart to 2000

              r2214
            
          axisY->setRange(-1, 1);

          axisY->setTitle("Audio level");

          m_chart->setAxisX(axisX, m_series);    

        Marek Rosa
    
Added audio input demo

              r2155
            
          m_chart->setAxisY(axisY, m_series);

        Marek Rosa
    
Audio example now takes every other value from mic input

              r2159
            
          m_chart->legend()->hide();

        Marek Rosa
    
Added axes titles to audio example and decreased the number of samples on chart to 2000

              r2214
            
          m_chart->setTitle("Data from the microphone");

        Marek Rosa
    
Added audio input demo

              r2155
            
          QVBoxLayout *mainLayout = new QVBoxLayout;

          mainLayout->addWidget(chartView);

          setLayout(mainLayout);

          QAudioFormat formatAudio;

          formatAudio.setFrequency(8000);

          formatAudio.setChannels(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();

      }

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Marek Rosa Added audio input demo	r2155	#include "widget.h"
		#include <QAudioDeviceInfo>
		#include <QAudioInput>
		#include <QChartView>
		#include <QLineSeries>
		#include <QChart>
		#include <QVBoxLayout>
		#include <QValueAxis>
		#include "xyseriesiodevice.h"

		QTCOMMERCIALCHART_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;
Marek Rosa Added axes titles to audio example and decreased the number of samples on chart to 2000	r2214	axisX->setRange(0, 2000);
		axisX->setLabelFormat("%g");
		axisX->setTitle("Samples");
Marek Rosa Added audio input demo	r2155	QValueAxis *axisY = new QValueAxis;
Marek Rosa Added axes titles to audio example and decreased the number of samples on chart to 2000	r2214	axisY->setRange(-1, 1);
		axisY->setTitle("Audio level");
		m_chart->setAxisX(axisX, m_series);
Marek Rosa Added audio input demo	r2155	m_chart->setAxisY(axisY, m_series);
Marek Rosa Audio example now takes every other value from mic input	r2159	m_chart->legend()->hide();
Marek Rosa Added axes titles to audio example and decreased the number of samples on chart to 2000	r2214	m_chart->setTitle("Data from the microphone");
Marek Rosa Added audio input demo	r2155
		QVBoxLayout *mainLayout = new QVBoxLayout;
		mainLayout->addWidget(chartView);
		setLayout(mainLayout);

		QAudioFormat formatAudio;
		formatAudio.setFrequency(8000);
		formatAudio.setChannels(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();
		}