mirror of
https://github.com/wang-bin/QtAV.git
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wang-bin
137 lines
3.9 KiB
C++
137 lines
3.9 KiB
C++
/******************************************************************************
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this file is part of QtAV examples
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Copyright (C) 2012-2015 Wang Bin <wbsecg1@gmail.com>
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* This file is part of QtAV
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include "videoplayer.h"
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#include <QGraphicsView>
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#ifndef QT_NO_OPENGL
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#include <QtOpenGL/QGLWidget>
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#endif
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#include <QCheckBox>
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#include <QSlider>
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#include <QLayout>
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#include <QPushButton>
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#include <QFileDialog>
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#include <QDial>
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using namespace QtAV;
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VideoPlayer::VideoPlayer(QWidget *parent)
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: QWidget(parent)
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, videoItem(0)
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{
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videoItem = new GraphicsItemRenderer;
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videoItem->resizeRenderer(640, 360);
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videoItem->setOutAspectRatioMode(VideoRenderer::VideoAspectRatio);
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QGraphicsScene *scene = new QGraphicsScene(this);
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scene->addItem(videoItem);
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view = new QGraphicsView(scene);
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QSlider *rotateSlider = new QSlider(Qt::Horizontal);
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rotateSlider->setRange(-180, 180);
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rotateSlider->setValue(0);
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QSlider *scaleSlider = new QSlider(Qt::Horizontal);
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scaleSlider->setRange(0, 200);
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scaleSlider->setValue(100);
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QDial *orientation = new QDial();
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orientation->setRange(0, 3);
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orientation->setValue(0);
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connect(orientation, SIGNAL(valueChanged(int)), SLOT(setOrientation(int)));
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connect(rotateSlider, SIGNAL(valueChanged(int)), SLOT(rotateVideo(int)));
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connect(scaleSlider, SIGNAL(valueChanged(int)), SLOT(scaleVideo(int)));
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QPushButton *openBtn = new QPushButton;
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openBtn->setText(tr("Open"));
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connect(openBtn, SIGNAL(clicked()), SLOT(open()));
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QCheckBox *glBox = new QCheckBox();
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glBox->setText(QString::fromLatin1("OpenGL"));
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glBox->setChecked(false);
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connect(glBox, SIGNAL(toggled(bool)), SLOT(setOpenGL(bool)));
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QHBoxLayout *hb = new QHBoxLayout;
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hb->addWidget(glBox);
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hb->addWidget(openBtn);
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hb->addWidget(orientation);
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QBoxLayout *layout = new QVBoxLayout;
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layout->addWidget(view);
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layout->addWidget(rotateSlider);
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layout->addWidget(scaleSlider);
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layout->addLayout(hb);
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setLayout(layout);
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mediaPlayer.setRenderer(videoItem);
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}
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VideoPlayer::~VideoPlayer()
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{
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}
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void VideoPlayer::play(const QString &file)
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{
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mediaPlayer.play(file);
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}
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void VideoPlayer::setOpenGL(bool o)
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{
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videoItem->setOpenGL(o);
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if (!o) {
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view->setViewport(0);
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return;
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}
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#ifndef QT_NO_OPENGL
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QGLWidget *glw = new QGLWidget();//QGLFormat(QGL::SampleBuffers));
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glw->setAutoFillBackground(false);
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view->setViewport(glw);
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view->setCacheMode(QGraphicsView::CacheNone);
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#endif
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}
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void VideoPlayer::setOrientation(int value)
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{
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videoItem->setOrientation(value*90);
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}
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void VideoPlayer::rotateVideo(int angle)
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{
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//rotate around the center of video element
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qreal x = videoItem->boundingRect().width() / 2.0;
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qreal y = videoItem->boundingRect().height() / 2.0;
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videoItem->setTransform(QTransform().translate(x, y).rotate(angle).translate(-x, -y));
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}
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void VideoPlayer::scaleVideo(int value)
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{
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qreal v = (qreal)value/100.0;
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videoItem->setTransform(QTransform().scale(v, v));
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}
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void VideoPlayer::open()
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{
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QString f = QFileDialog::getOpenFileName(0, tr("Open a video"));
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if (f.isEmpty())
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return;
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play(f);
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}
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