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/*
Copyright (C) 2010 Collabora Multimedia.
@author Mauricio Piacentini <mauricio.piacentini@collabora.co.uk>
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ui_videoorientationtest.h"
#include <QGst/Init>
#include <QGst/Pipeline>
#include <QGst/ElementFactory>
#include <QGst/VideoOrientation>
#include <QtGui/QApplication>
#include <QtGui/QMessageBox>
#include <QtGui/QCheckBox>
class VideoOrientationTest : public QWidget
{
Q_OBJECT
public:
VideoOrientationTest(QWidget* parent = 0, Qt::WindowFlags f = 0);
~VideoOrientationTest();
private Q_SLOTS:
void on_hFlipCheckBox_clicked(bool on);
void on_vFlipCheckBox_clicked(bool on);
private:
Ui::VideoOrientationTest m_ui;
QGst::PipelinePtr m_pipeline;
QGst::ElementPtr m_src;
QGst::ElementPtr m_converter;
QGst::ElementPtr m_sink;
};
VideoOrientationTest::VideoOrientationTest(QWidget *parent, Qt::WindowFlags f)
: QWidget(parent, f)
{
m_ui.setupUi(this);
m_pipeline = QGst::Pipeline::create();
m_src = QGst::ElementFactory::make("v4l2src");
if (!m_src) {
throw std::runtime_error("Unable to create a v4l2src stream");
}
m_pipeline->add(m_src);
//Insert a ffmpegcolorspace converter element, in case the camera output is not compatible with our sink
m_converter = QGst::ElementFactory::make("ffmpegcolorspace");
if (!m_converter) {
throw std::runtime_error("Unable to create the ffmpegcolorspace converter");
}
m_pipeline->add(m_converter);
m_src->link(m_converter);
m_sink = QGst::ElementFactory::make("xvimagesink");
if (!m_sink) {
throw std::runtime_error("Unable to create the sink element");
}
m_pipeline->add(m_sink);
m_converter->link(m_sink);
m_ui.videoWidget->setVideoSink(m_sink);
//Start the pipeline
m_pipeline->setState(QGst::StatePlaying);
}
VideoOrientationTest::~VideoOrientationTest()
{
m_pipeline->setState(QGst::StateNull);
/* When m_pipeline is destructed, the last reference to our pipeline will be gone,
* and with it all the elements, buses, etc will be destroyed too. As a result,
* there is no need to cleanup here. */
}
void VideoOrientationTest::on_hFlipCheckBox_clicked(bool checked)
{
if (m_src) {
QGst::VideoOrientationPtr orientationinterface = m_src.dynamicCast<QGst::VideoOrientation>();
if (orientationinterface) {
bool canFlip = orientationinterface->enableHorizontalFlip(checked);
if (!canFlip) {
QMessageBox::warning(this, "Warning", "Source can not flip horizontally");
}
}
m_ui.videoWidget->update();
}
}
void VideoOrientationTest::on_vFlipCheckBox_clicked(bool checked)
{
if (m_src) {
QGst::VideoOrientationPtr orientationinterface = m_src.dynamicCast<QGst::VideoOrientation>();
if (orientationinterface) {
bool canFlip = orientationinterface->enableVerticalFlip(checked);
if (!canFlip) {
QMessageBox::warning(this, "Warning", "Source can not flip vertically");
}
}
m_ui.videoWidget->update();
}
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
QGst::init(&argc, &argv);
VideoOrientationTest test;
test.show();
return app.exec();
}
#include "videoorientationtest.moc"
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