diff options
Diffstat (limited to 'examples/multimediawidgets/player/histogramwidget.h')
-rw-r--r-- | examples/multimediawidgets/player/histogramwidget.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/examples/multimediawidgets/player/histogramwidget.h b/examples/multimediawidgets/player/histogramwidget.h new file mode 100644 index 000000000..6a8aa16fe --- /dev/null +++ b/examples/multimediawidgets/player/histogramwidget.h @@ -0,0 +1,83 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef HISTOGRAMWIDGET_H +#define HISTOGRAMWIDGET_H + +#include <QThread> +#include <QVideoFrame> +#include <QWidget> + +class FrameProcessor: public QObject +{ + Q_OBJECT + +public slots: + void processFrame(QVideoFrame frame, int levels); + +signals: + void histogramReady(QVector<qreal> histogram); +}; + +class HistogramWidget : public QWidget +{ + Q_OBJECT + +public: + explicit HistogramWidget(QWidget *parent = 0); + ~HistogramWidget(); + void setLevels(int levels) { m_levels = levels; } + +public slots: + void processFrame(QVideoFrame frame); + void setHistogram(QVector<qreal> histogram); + +protected: + void paintEvent(QPaintEvent *event); + +private: + QVector<qreal> m_histogram; + int m_levels; + FrameProcessor m_processor; + QThread m_processorThread; + bool m_isBusy; +}; + +#endif // HISTOGRAMWIDGET_H |