1 /******************************************************************************
2 Simple Player: this file is part of QtAV examples
3 Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
4
5 * This file is part of QtAV
6
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 ******************************************************************************/
20
21 #include "playerwindow.h"
22 #include <QPushButton>
23 #include <QSlider>
24 #include <QLayout>
25 #include <QMessageBox>
26 #include <QFileDialog>
27
28 using namespace QtAV;
29
PlayerWindow(QWidget * parent)30 PlayerWindow::PlayerWindow(QWidget *parent) : QWidget(parent)
31 {
32 m_unit = 1000;
33 setWindowTitle(QString::fromLatin1("QtAV simple player example"));
34 m_player = new AVPlayer(this);
35 QVBoxLayout *vl = new QVBoxLayout();
36 setLayout(vl);
37 m_vo = new VideoOutput(this);
38 if (!m_vo->widget()) {
39 QMessageBox::warning(0, QString::fromLatin1("QtAV error"), tr("Can not create video renderer"));
40 return;
41 }
42 m_player->setRenderer(m_vo);
43 vl->addWidget(m_vo->widget());
44 m_slider = new QSlider();
45 m_slider->setOrientation(Qt::Horizontal);
46 connect(m_slider, SIGNAL(sliderMoved(int)), SLOT(seekBySlider(int)));
47 connect(m_slider, SIGNAL(sliderPressed()), SLOT(seekBySlider()));
48 connect(m_player, SIGNAL(positionChanged(qint64)), SLOT(updateSlider(qint64)));
49 connect(m_player, SIGNAL(started()), SLOT(updateSlider()));
50 connect(m_player, SIGNAL(notifyIntervalChanged()), SLOT(updateSliderUnit()));
51
52 vl->addWidget(m_slider);
53 QHBoxLayout *hb = new QHBoxLayout();
54 vl->addLayout(hb);
55 m_openBtn = new QPushButton(tr("Open"));
56 m_playBtn = new QPushButton(tr("Play/Pause"));
57 m_stopBtn = new QPushButton(tr("Stop"));
58 hb->addWidget(m_openBtn);
59 hb->addWidget(m_playBtn);
60 hb->addWidget(m_stopBtn);
61 connect(m_openBtn, SIGNAL(clicked()), SLOT(openMedia()));
62 connect(m_playBtn, SIGNAL(clicked()), SLOT(playPause()));
63 connect(m_stopBtn, SIGNAL(clicked()), m_player, SLOT(stop()));
64 }
65
openMedia()66 void PlayerWindow::openMedia()
67 {
68 QString file = QFileDialog::getOpenFileName(0, tr("Open a video"));
69 if (file.isEmpty())
70 return;
71 m_player->play(file);
72 }
73
seekBySlider(int value)74 void PlayerWindow::seekBySlider(int value)
75 {
76 if (!m_player->isPlaying())
77 return;
78 m_player->seek(qint64(value*m_unit));
79 }
80
seekBySlider()81 void PlayerWindow::seekBySlider()
82 {
83 seekBySlider(m_slider->value());
84 }
85
playPause()86 void PlayerWindow::playPause()
87 {
88 if (!m_player->isPlaying()) {
89 m_player->play();
90 return;
91 }
92 m_player->pause(!m_player->isPaused());
93 }
94
updateSlider(qint64 value)95 void PlayerWindow::updateSlider(qint64 value)
96 {
97 m_slider->setRange(0, int(m_player->duration()/m_unit));
98 m_slider->setValue(int(value/m_unit));
99 }
100
updateSlider()101 void PlayerWindow::updateSlider()
102 {
103 updateSlider(m_player->position());
104 }
105
updateSliderUnit()106 void PlayerWindow::updateSliderUnit()
107 {
108 m_unit = m_player->notifyInterval();
109 updateSlider();
110 }
111