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Initial copy of QtMultimediaKit.

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2c82d5611655e5967f5c5095af50c0991c4378b2
This commit is contained in:
Michael Goddard
2011-06-29 13:38:46 +10:00
commit 2a34e88c1e
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doc/src/snippets/multimedia-snippets/player.cpp Normal file
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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "player.h"
#include "playercontrols.h"
#include "playlistmodel.h"
#include "videowidget.h"
#include <qmediaservice.h>
#include <qmediaplaylist.h>
#include <QtGui>
Player::Player(QWidget *parent)
: QWidget(parent)
, videoWidget(0)
, coverLabel(0)
, slider(0)
, colorDialog(0)
{
//! [create-objs]
player = new QMediaPlayer;
playlist = new QMediaPlaylist(player);
//! [create-objs]
connect(player, SIGNAL(durationChanged(qint64)), SLOT(durationChanged(qint64)));
connect(player, SIGNAL(positionChanged(qint64)), SLOT(positionChanged(qint64)));
connect(player, SIGNAL(metaDataChanged()), SLOT(metaDataChanged()));
connect(playlist, SIGNAL(playlistPositionChanged(int)), SLOT(playlistPositionChanged(int)));
connect(player, SIGNAL(mediaStatusChanged(QMediaPlayer::MediaStatus)),
this, SLOT(statusChanged(QMediaPlayer::MediaStatus)));
connect(player, SIGNAL(bufferStatusChanged(int)), this, SLOT(bufferingProgress(int)));
videoWidget = new VideoWidget(player);
playlistModel = new PlaylistModel(this);
playlistModel->setPlaylist(playlist);
playlistView = new QListView;
playlistView->setModel(playlistModel);
playlistView->setCurrentIndex(playlistModel->index(playlist->currentPosition(), 0));
connect(playlistView, SIGNAL(activated(QModelIndex)), this, SLOT(jump(QModelIndex)));
slider = new QSlider(Qt::Horizontal);
slider->setRange(0, player->duration() / 1000);
connect(slider, SIGNAL(sliderMoved(int)), this, SLOT(seek(int)));
QPushButton *openButton = new QPushButton(tr("Open"));
connect(openButton, SIGNAL(clicked()), this, SLOT(open()));
PlayerControls *controls = new PlayerControls;
controls->setState(player->state());
controls->setVolume(player->volume());
controls->setMuted(controls->isMuted());
connect(controls, SIGNAL(play()), player, SLOT(play()));
connect(controls, SIGNAL(pause()), player, SLOT(pause()));
connect(controls, SIGNAL(stop()), player, SLOT(stop()));
connect(controls, SIGNAL(next()), playlist, SLOT(next()));
connect(controls, SIGNAL(previous()), playlist, SLOT(previous()));
connect(controls, SIGNAL(changeVolume(int)), player, SLOT(setVolume(int)));
connect(controls, SIGNAL(changeMuting(bool)), player, SLOT(setMuted(bool)));
connect(controls, SIGNAL(changeRate(qreal)), player, SLOT(setPlaybackRate(qreal)));
connect(player, SIGNAL(stateChanged(QMediaPlayer::State)),
controls, SLOT(setState(QMediaPlayer::State)));
connect(player, SIGNAL(volumeChanged(int)), controls, SLOT(setVolume(int)));
connect(player, SIGNAL(mutingChanged(bool)), controls, SLOT(setMuted(bool)));
QPushButton *fullScreenButton = new QPushButton(tr("FullScreen"));
fullScreenButton->setCheckable(true);
if (videoWidget != 0) {
connect(fullScreenButton, SIGNAL(clicked(bool)), videoWidget, SLOT(setFullScreen(bool)));
connect(videoWidget, SIGNAL(fullScreenChanged(bool)),
fullScreenButton, SLOT(setChecked(bool)));
} else {
fullScreenButton->setEnabled(false);
}
QPushButton *colorButton = new QPushButton(tr("Color Options..."));
if (videoWidget)
connect(colorButton, SIGNAL(clicked()), this, SLOT(showColorDialog()));
else
colorButton->setEnabled(false);
QBoxLayout *displayLayout = new QHBoxLayout;
if (videoWidget)
displayLayout->addWidget(videoWidget, 2);
else
displayLayout->addWidget(coverLabel, 2);
displayLayout->addWidget(playlistView);
QBoxLayout *controlLayout = new QHBoxLayout;
controlLayout->setMargin(0);
controlLayout->addWidget(openButton);
controlLayout->addStretch(1);
controlLayout->addWidget(controls);
controlLayout->addStretch(1);
controlLayout->addWidget(fullScreenButton);
controlLayout->addWidget(colorButton);
QBoxLayout *layout = new QVBoxLayout;
layout->addLayout(displayLayout);
layout->addWidget(slider);
layout->addLayout(controlLayout);
setLayout(layout);
metaDataChanged();
}
Player::~Player()
{
delete playlist;
delete player;
}
void Player::open()
{
QStringList fileNames = QFileDialog::getOpenFileNames();
foreach (QString const &fileName, fileNames)
playlist->appendItem(QUrl::fromLocalFile(fileName));
}
void Player::durationChanged(qint64 duration)
{
slider->setMaximum(duration / 1000);
}
void Player::positionChanged(qint64 progress)
{
slider->setValue(progress / 1000);
}
void Player::metaDataChanged()
{
//qDebug() << "update metadata" << player->metaData(QtMultimediaKit::Title).toString();
if (player->isMetaDataAvailable()) {
setTrackInfo(QString("%1 - %2")
.arg(player->metaData(QtMultimediaKit::AlbumArtist).toString())
.arg(player->metaData(QtMultimediaKit::Title).toString()));
if (coverLabel) {
QUrl url = player->metaData(QtMultimediaKit::CoverArtUrlLarge).value<QUrl>();
coverLabel->setPixmap(!url.isEmpty()
? QPixmap(url.toString())
: QPixmap());
}
}
}
void Player::jump(const QModelIndex &index)
{
if (index.isValid()) {
playlist->setCurrentPosition(index.row());
}
}
void Player::playlistPositionChanged(int currentItem)
{
playlistView->setCurrentIndex(playlistModel->index(currentItem, 0));
}
void Player::seek(int seconds)
{
player->setPosition(seconds * 1000);
}
void Player::statusChanged(QMediaPlayer::MediaStatus status)
{
switch (status) {
case QMediaPlayer::UnknownMediaStatus:
case QMediaPlayer::NoMedia:
case QMediaPlayer::LoadedMedia:
case QMediaPlayer::BufferingMedia:
case QMediaPlayer::BufferedMedia:
#ifndef QT_NO_CURSOR
unsetCursor();
#endif
setStatusInfo(QString());
break;
case QMediaPlayer::LoadingMedia:
#ifndef QT_NO_CURSOR
setCursor(QCursor(Qt::BusyCursor));
#endif
setStatusInfo(tr("Loading..."));
break;
case QMediaPlayer::StalledMedia:
#ifndef QT_NO_CURSOR
setCursor(QCursor(Qt::BusyCursor));
#endif
break;
case QMediaPlayer::EndOfMedia:
#ifndef QT_NO_CURSOR
unsetCursor();
#endif
setStatusInfo(QString());
QApplication::alert(this);
break;
case QMediaPlayer::InvalidMedia:
#ifndef QT_NO_CURSOR
unsetCursor();
#endif
setStatusInfo(player->errorString());
break;
}
}
void Player::bufferingProgress(int progress)
{
setStatusInfo(tr("Buffering %4%%").arg(progress));
}
void Player::setTrackInfo(const QString &info)
{
trackInfo = info;
if (!statusInfo.isEmpty())
setWindowTitle(QString("%1 | %2").arg(trackInfo).arg(statusInfo));
else
setWindowTitle(trackInfo);
}
void Player::setStatusInfo(const QString &info)
{
statusInfo = info;
if (!statusInfo.isEmpty())
setWindowTitle(QString("%1 | %2").arg(trackInfo).arg(statusInfo));
else
setWindowTitle(trackInfo);
}
void Player::showColorDialog()
{
if (!colorDialog) {
QSlider *brightnessSlider = new QSlider(Qt::Horizontal);
brightnessSlider->setRange(-100, 100);
brightnessSlider->setValue(videoWidget->brightness());
connect(brightnessSlider, SIGNAL(sliderMoved(int)), videoWidget, SLOT(setBrightness(int)));
connect(videoWidget, SIGNAL(brightnessChanged(int)), brightnessSlider, SLOT(setValue(int)));
QSlider *contrastSlider = new QSlider(Qt::Horizontal);
contrastSlider->setRange(-100, 100);
contrastSlider->setValue(videoWidget->contrast());
connect(contrastSlider, SIGNAL(sliderMoved(int)), videoWidget, SLOT(setContrast(int)));
connect(videoWidget, SIGNAL(contrastChanged(int)), contrastSlider, SLOT(setValue(int)));
QSlider *hueSlider = new QSlider(Qt::Horizontal);
hueSlider->setRange(-100, 100);
hueSlider->setValue(videoWidget->hue());
connect(hueSlider, SIGNAL(sliderMoved(int)), videoWidget, SLOT(setHue(int)));
connect(videoWidget, SIGNAL(hueChanged(int)), hueSlider, SLOT(setValue(int)));
QSlider *saturationSlider = new QSlider(Qt::Horizontal);
saturationSlider->setRange(-100, 100);
saturationSlider->setValue(videoWidget->saturation());
connect(saturationSlider, SIGNAL(sliderMoved(int)), videoWidget, SLOT(setSaturation(int)));
connect(videoWidget, SIGNAL(saturationChanged(int)), saturationSlider, SLOT(setValue(int)));
QFormLayout *layout = new QFormLayout;
layout->addRow(tr("Brightness"), brightnessSlider);
layout->addRow(tr("Contrast"), contrastSlider);
layout->addRow(tr("Hue"), hueSlider);
layout->addRow(tr("Saturation"), saturationSlider);
colorDialog = new QDialog(this);
colorDialog->setWindowTitle(tr("Color Options"));
colorDialog->setLayout(layout);
}
colorDialog->show();
}