@@ -0,0 +1,318 @@
2+ * Copyright (C) 2013-2016 Canonical, Ltd.
4+ * This program is free software; you can redistribute it and/or modify
5+ * it under the terms of the GNU General Public License as published by
6+ * the Free Software Foundation; version 3.
8+ * This program is distributed in the hope that it will be useful,
9+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
10+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11+ * GNU General Public License for more details.
13+ * You should have received a copy of the GNU General Public License
14+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
16+ * Author: Michael Zanetti <michael.zanetti@canonical.com>
19+#include "mediaplayer.h"
24+class MetaDataObject: public QObject
27+ Q_PROPERTY(QVariant title READ title NOTIFY metaDataChanged)
28+ Q_PROPERTY(QVariant resolution READ resolution NOTIFY metaDataChanged)
30+ MetaDataObject(MediaPlayer* parent = nullptr)
36+ QVariant title() const { return getProperty("title"); }
37+ QVariant resolution() const { return getProperty("resolution", QSize(640, 640)); }
39+ QVariant getProperty(const QString& property, QVariant defaultValue = QVariant()) const {
40+ MediaDataSource* sourceData = MediaPlayerDataController::instance()->dataForSource(m_source->source());
41+ QVariant metaData = sourceData->metaData();
42+ return metaData.toMap().value(property, defaultValue);
46+ void metaDataChanged();
49+ MediaPlayer* m_source;
52+MediaPlayer::MediaPlayer(QObject* parent)
54+ , m_playbackState(StoppedState)
56+ , m_metaData(new MetaDataObject(this))
57+ , m_playlist(nullptr)
59+ qsrand(time(nullptr));
60+ m_timer.setInterval(100);
61+ connect(&m_timer, &QTimer::timeout, this, &MediaPlayer::timerEvent);
63+ connect(MediaPlayerDataController::instance(), &MediaPlayerDataController::sourceAboutToBeRemoved,
64+ this, [this](const QUrl& source) {
65+ MediaDataSource* dataSource = MediaPlayerDataController::instance()->dataForSource(source);
66+ if (!dataSource) return;
68+ disconnect(dataSource, &MediaDataSource::durationChanged, this, &MediaPlayer::durationChanged);
69+ disconnect(dataSource, &MediaDataSource::seekableChanged, this, &MediaPlayer::seekableChanged);
70+ disconnect(dataSource, &MediaDataSource::availabilityChanged, this, &MediaPlayer::availabilityChanged);
71+ disconnect(dataSource, &MediaDataSource::metaDataChanged, m_metaData, &MetaDataObject::metaDataChanged);
74+ connect(MediaPlayerDataController::instance(), &MediaPlayerDataController::sourceAdded,
75+ this, [this](const QUrl& source) {
76+ MediaDataSource* dataSource = MediaPlayerDataController::instance()->dataForSource(source);
77+ if (!dataSource) return;
79+ connect(dataSource, &MediaDataSource::durationChanged, this, &MediaPlayer::durationChanged);
80+ connect(dataSource, &MediaDataSource::seekableChanged,this, &MediaPlayer::seekableChanged);
81+ connect(dataSource, &MediaDataSource::availabilityChanged,this, &MediaPlayer::availabilityChanged);
82+ connect(dataSource, &MediaDataSource::metaDataChanged, m_metaData, &MetaDataObject::metaDataChanged);
86+QUrl MediaPlayer::source() const
91+void MediaPlayer::setSource(const QUrl &source)
93+ if (m_source != source) {
95+ Q_EMIT sourceChanged(source);
96+ Q_EMIT durationChanged(duration());
97+ Q_EMIT seekableChanged(isSeekable());
98+ Q_EMIT availabilityChanged(availability());
101+ Q_EMIT positionChanged(m_position);
102+ Q_EMIT m_metaData->metaDataChanged();
104+ m_status = availability()==Available ? Loaded : InvalidMedia;
105+ Q_EMIT statusChanged();
109+DeclarativePlaylist *MediaPlayer::playlist() const
114+void MediaPlayer::setPlaylist(DeclarativePlaylist *playlist)
116+ if (playlist == m_playlist)
119+ m_playlist = playlist;
120+ Q_EMIT playlistChanged();
123+MediaPlayer::PlaybackState MediaPlayer::playbackState() const
125+ return m_playbackState;
128+int MediaPlayer::position() const
133+int MediaPlayer::duration() const
135+ MediaDataSource* dataSource = MediaPlayerDataController::instance()->dataForSource(source());
136+ if (dataSource) return dataSource->duration();
140+MediaPlayer::Error MediaPlayer::error() const
145+QString MediaPlayer::errorString() const
150+void MediaPlayer::pause()
152+ if (m_playbackState == PlayingState) {
153+ m_playbackState = PausedState;
154+ Q_EMIT playbackStateChanged(m_playbackState);
159+void MediaPlayer::play()
161+ if (m_playbackState != PlayingState) {
162+ m_playbackState = PlayingState;
163+ Q_EMIT playbackStateChanged(m_playbackState);
169+void MediaPlayer::stop()
171+ if (m_playbackState != StoppedState) {
172+ m_playbackState = StoppedState;
173+ Q_EMIT playbackStateChanged(m_playbackState);
176+ Q_EMIT positionChanged(m_position);
180+void MediaPlayer::seek(int position)
182+ if (status() != Loaded) return;
183+ int newPosition = qMin(qMax(0, position), duration());
184+ if (newPosition != m_position) {
185+ m_position = newPosition;
186+ Q_EMIT positionChanged(m_position);
190+void MediaPlayer::timerEvent()
192+ if (m_position + m_timer.interval() < duration()) {
193+ m_position += m_timer.interval();
194+ Q_EMIT positionChanged(m_position);
200+MediaPlayer::AudioRole MediaPlayer::audioRole() const
202+ return MediaPlayer::MusicRole;
205+void MediaPlayer::setAudioRole(MediaPlayer::AudioRole audioRole)
207+ Q_UNUSED(audioRole);
210+bool MediaPlayer::isSeekable() const
212+ MediaDataSource* dataSource = MediaPlayerDataController::instance()->dataForSource(source());
213+ if (dataSource) return dataSource->isSeekable();
217+MediaPlayer::Availability MediaPlayer::availability() const
219+ MediaDataSource* dataSource = MediaPlayerDataController::instance()->dataForSource(source());
220+ if (dataSource) return dataSource->availability();
224+QObject *MediaPlayer::metaData() const
230+MediaDataSource::MediaDataSource(QObject *parent)
233+ , m_duration((qrand() % 20000) + 10000)
234+ , m_availability(MediaPlayer::Available)
238+MediaDataSource::~MediaDataSource()
240+ if (!m_source.isEmpty()) MediaPlayerDataController::instance()->unregisterDataSource(this);
243+void MediaDataSource::setSource(const QUrl &source)
245+ if (m_source != source) {
246+ if (!m_source.isEmpty()) MediaPlayerDataController::instance()->unregisterDataSource(this);
250+ if (!m_source.isEmpty()) MediaPlayerDataController::instance()->registerDataSource(this);
251+ Q_EMIT sourceChanged();
255+void MediaDataSource::setSeekable(bool seekable)
257+ if (m_seekable != seekable) {
258+ m_seekable = seekable;
259+ Q_EMIT seekableChanged(m_seekable);
263+void MediaDataSource::setDuration(int duration)
265+ if (m_duration != duration) {
266+ m_duration = duration;
267+ Q_EMIT durationChanged(m_duration);
271+void MediaDataSource::setAvailability(MediaPlayer::Availability availability)
273+ if (m_availability != availability) {
274+ m_availability = availability;
275+ Q_EMIT availabilityChanged(m_availability);
279+void MediaDataSource::setMetaData(const QVariant& metaData)
281+ if (m_metaData != metaData) {
282+ m_metaData = metaData;
283+ Q_EMIT metaDataChanged();
287+MediaPlayerDataController *MediaPlayerDataController::instance()
289+ static MediaPlayerDataController* instance = nullptr;
290+ if (!instance) { instance = new MediaPlayerDataController(); }
294+void MediaPlayerDataController::registerDataSource(MediaDataSource *dataSource)
296+ m_dataSources[dataSource->source()] = dataSource;
297+ Q_EMIT sourceAdded(dataSource->source());
300+void MediaPlayerDataController::unregisterDataSource(MediaDataSource *dataSource)
302+ QList<QUrl> keys = m_dataSources.keys(dataSource);
303+ Q_FOREACH(const QUrl& key, keys) {
304+ Q_EMIT sourceAboutToBeRemoved(key);
305+ m_dataSources.remove(key);
309+MediaDataSource *MediaPlayerDataController::dataForSource(const QUrl &source)
311+ if (!m_dataSources.contains(source)) {
312+ static MediaDataSource defaultSource;
313+ return &defaultSource;
315+ return m_dataSources[source];
318+#include "mediaplayer.moc"