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

Accelerating lineseries with OpenGL...

Accelerating lineseries with OpenGL Added support for QAbstractSeries::useOpenGL property. When true, the series in question is drawn on a separate offscreen buffer using OpenGL and then superimposed on the chart. Currently this property is only supported for line and scatter series. Change-Id: I174fec541f9f3c23464270c1fe08f824af16a0fb Reviewed-by: Titta Heikkala <titta.heikkala@theqtcompany.com> Reviewed-by: Tomi Korpipää <tomi.korpipaa@theqtcompany.com>

Miikka Heikkinen - - Load All Authors

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r2820:79a856530b69


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             xyseriesiodevice.cpp
        
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        Miikka Heikkinen
    
Added copyright headers to *.h/*.cpp files missing them...

              r2435
            
      /****************************************************************************

      **

        Titta Heikkala
    
Copyright header changes...

              r2776
            
      ** Copyright (C) 2015 The Qt Company Ltd

        Miikka Heikkinen
    
Added copyright headers to *.h/*.cpp files missing them...

              r2435
            
      ** All rights reserved.

        Titta Heikkala
    
Copyright header changes...

              r2776
            
      ** For any questions to The Qt Company, please use contact form at http://qt.io

        Miikka Heikkinen
    
Added copyright headers to *.h/*.cpp files missing them...

              r2435
            
      **

        Titta Heikkala
    
Updated license headers...

              r2740
            
      ** This file is part of the Qt Charts module.

        Miikka Heikkinen
    
Added copyright headers to *.h/*.cpp files missing them...

              r2435
            
      **

        Titta Heikkala
    
Updated license headers...

              r2740
            
      ** Licensees holding valid commercial license for Qt may use this file in

      ** accordance with the Qt License Agreement provided with the Software

      ** or, alternatively, in accordance with the terms contained in a written

        Titta Heikkala
    
Copyright header changes...

              r2776
            
      ** agreement between you and The Qt Company.

        Miikka Heikkinen
    
Added copyright headers to *.h/*.cpp files missing them...

              r2435
            
      **

      ** If you have questions regarding the use of this file, please use

        Titta Heikkala
    
Updated license headers...

              r2740
            
      ** contact form at http://qt.io

        Miikka Heikkinen
    
Added copyright headers to *.h/*.cpp files missing them...

              r2435
            
      **

      ****************************************************************************/

        Marek Rosa
    
Added audio input demo

              r2155
            
      #include "xyseriesiodevice.h"

        Titta Heikkala
    
Fix include syntax...

              r2714
            
      #include <QtCharts/QXYSeries>

        Marek Rosa
    
Added audio input demo

              r2155
            
      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;

        Miikka Heikkinen
    
Accelerating lineseries with OpenGL...

              r2820
            
          QVector<QPointF> oldPoints = m_series->pointsVector();

          QVector<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) {

        Miikka Heikkinen
    
Accelerating lineseries with OpenGL...

              r2820
            
              points = m_series->pointsVector();

        Marek Rosa
    
Added audio input demo

              r2155
            
          } 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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Miikka Heikkinen Added copyright headers to .h/.cpp files missing them...	r2435	/****************************************************************************
		**
Titta Heikkala Copyright header changes...	r2776	** Copyright (C) 2015 The Qt Company Ltd
Miikka Heikkinen Added copyright headers to .h/.cpp files missing them...	r2435	** All rights reserved.
Titta Heikkala Copyright header changes...	r2776	** For any questions to The Qt Company, please use contact form at http://qt.io
Miikka Heikkinen Added copyright headers to .h/.cpp files missing them...	r2435	**
Titta Heikkala Updated license headers...	r2740	** This file is part of the Qt Charts module.
Miikka Heikkinen Added copyright headers to .h/.cpp files missing them...	r2435	**
Titta Heikkala Updated license headers...	r2740	** Licensees holding valid commercial license for Qt may use this file in
		** accordance with the Qt License Agreement provided with the Software
		** or, alternatively, in accordance with the terms contained in a written
Titta Heikkala Copyright header changes...	r2776	** agreement between you and The Qt Company.
Miikka Heikkinen Added copyright headers to .h/.cpp files missing them...	r2435	**
		** If you have questions regarding the use of this file, please use
Titta Heikkala Updated license headers...	r2740	** contact form at http://qt.io
Miikka Heikkinen Added copyright headers to .h/.cpp files missing them...	r2435	**
		****************************************************************************/

Marek Rosa Added audio input demo	r2155	#include "xyseriesiodevice.h"
Titta Heikkala Fix include syntax...	r2714	#include <QtCharts/QXYSeries>
Marek Rosa Added audio input demo	r2155
		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;
Miikka Heikkinen Accelerating lineseries with OpenGL...	r2820	QVector<QPointF> oldPoints = m_series->pointsVector();
		QVector<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) {
Miikka Heikkinen Accelerating lineseries with OpenGL...	r2820	points = m_series->pointsVector();
Marek Rosa Added audio input demo	r2155	} 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;
		}