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

Updated logarithmc axis example screen shot

Marek Rosa - - Load All Authors

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

              r2155
            
      #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)

      {

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

              r2214
            
          qint64 range = 2000;

        Marek Rosa
    
Added audio input demo

              r2155
            
          QList<QPointF> oldPoints = m_series->points();

          QList<QPointF> points;

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

              r2214
            
          int resolution = 4;

        Marek Rosa
    
Added audio input demo

              r2155
            
          if (oldPoints.count() < range) {

              points = m_series->points();

          } else {

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

              r2214
            
              for (int i = maxSize/resolution; i < oldPoints.count(); i++)

                  points.append(QPointF(i - maxSize/resolution, oldPoints.at(i).y()));

        Marek Rosa
    
Added audio input demo

              r2155
            
          }

          qint64 size = points.count();

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

              r2214
            
          for (int k = 0; k < maxSize/resolution; k++)

              points.append(QPointF(k + size, ((quint8)data[resolution * k] - 128)/128.0));

        Marek Rosa
    
Added audio input demo

              r2155
            
          m_series->replace(points);

          return maxSize;

      }

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Marek Rosa Added audio input demo	r2155	#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)
		{
Marek Rosa Added axes titles to audio example and decreased the number of samples on chart to 2000	r2214	qint64 range = 2000;
Marek Rosa Added audio input demo	r2155	QList<QPointF> oldPoints = m_series->points();
		QList<QPointF> points;
Marek Rosa Added axes titles to audio example and decreased the number of samples on chart to 2000	r2214	int resolution = 4;
Marek Rosa Added audio input demo	r2155
		if (oldPoints.count() < range) {
		points = m_series->points();
		} else {
Marek Rosa Added axes titles to audio example and decreased the number of samples on chart to 2000	r2214	for (int i = maxSize/resolution; i < oldPoints.count(); i++)
		points.append(QPointF(i - maxSize/resolution, oldPoints.at(i).y()));
Marek Rosa Added audio input demo	r2155	}

		qint64 size = points.count();
Marek Rosa Added axes titles to audio example and decreased the number of samples on chart to 2000	r2214	for (int k = 0; k < maxSize/resolution; k++)
		points.append(QPointF(k + size, ((quint8)data[resolution * k] - 128)/128.0));
Marek Rosa Added audio input demo	r2155
		m_series->replace(points);
		return maxSize;
		}