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Ronald S. Bultje authored
Makes first 50 frames of bus @ 1500kbps encode from 3min22.7 to 3min18.2, i.e. 2.3% faster. In addition, use the sub_pixel_avg functions to calc the variance of the averaging predictor. This is slightly suboptimal because the function is subpixel-position-aware, but it will (at least for the SSE2 version) not actually use a bilinear filter for a full-pixel position, thus leading to approximately the same performance compared to if we implemented an actual average-aware full-pixel variance function. That gains another 0.3 seconds (i.e. encode time goes to 3min17.4), thus leading to a total gain of 2.7%. Change-Id: I3f059d2b04243921868cfed2568d4fa65d7b5acd
c24d9223
/******************************************************************************** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).** All rights reserved.** Contact: http://www.qt-project.org/**** 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 Nokia Corporation 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."** $QT_END_LICENSE$******************************************************************************/#include <QWindow>#include <QtGui/qopengl.h>#include <QtGui/qopenglshaderprogram.h>#include <QtGui/qopenglframebufferobject.h>#include <QPropertyAnimation>#include <QColor>#include <QImage>#include <QTime>QT_BEGIN_NAMESPACEclass QOpenGLContext;QT_END_NAMESPACEclass PaintedWindow : public QWindow{ Q_OBJECT Q_PROPERTY(qreal rotation READ rotation WRITE setRotation NOTIFY rotationChanged)public: PaintedWindow(); qreal rotation() const { return m_rotation; }signals: void rotationChanged(qreal rotation);private slots:7172737475767778798081828384858687888990919293949596
void paint();
void setRotation(qreal r);
void orientationChanged(Qt::ScreenOrientation newOrientation);
void rotationDone();
private:
void resizeEvent(QResizeEvent *);
void exposeEvent(QExposeEvent *);
void mousePressEvent(QMouseEvent *);
void paint(QPainter *painter, const QRect &rect);
QOpenGLContext *m_context;
qreal m_rotation;
QImage m_prevImage;
QImage m_nextImage;
qreal m_deltaRotation;
Qt::ScreenOrientation m_targetOrientation;
Qt::ScreenOrientation m_nextTargetOrientation;
QPropertyAnimation *m_animation;
QTimer *m_paintTimer;
};