You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
546 lines
17 KiB
546 lines
17 KiB
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:LGPL$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** GNU Lesser General Public License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU Lesser
|
|
** General Public License version 3 as published by the Free Software
|
|
** Foundation and appearing in the file LICENSE.LGPL3 included in the
|
|
** packaging of this file. Please review the following information to
|
|
** ensure the GNU Lesser General Public License version 3 requirements
|
|
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
|
|
**
|
|
** GNU General Public License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU
|
|
** General Public License version 2.0 or (at your option) the GNU General
|
|
** Public license version 3 or any later version approved by the KDE Free
|
|
** Qt Foundation. The licenses are as published by the Free Software
|
|
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
|
|
** included in the packaging of this file. Please review the following
|
|
** information to ensure the GNU General Public License requirements will
|
|
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
|
|
** https://www.gnu.org/licenses/gpl-3.0.html.
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
import QtQuick 2.0
|
|
import QtMultimedia 5.13
|
|
|
|
/*!
|
|
\qmltype Video
|
|
\inherits Item
|
|
\ingroup multimedia_qml
|
|
\ingroup multimedia_video_qml
|
|
\inqmlmodule QtMultimedia
|
|
\brief A convenience type for showing a specified video.
|
|
|
|
\c Video is a convenience type combining the functionality
|
|
of a \l MediaPlayer and a \l VideoOutput into one. It provides
|
|
simple video playback functionality without having to declare multiple
|
|
types.
|
|
|
|
\qml
|
|
Video {
|
|
id: video
|
|
width : 800
|
|
height : 600
|
|
source: "video.avi"
|
|
|
|
MouseArea {
|
|
anchors.fill: parent
|
|
onClicked: {
|
|
video.play()
|
|
}
|
|
}
|
|
|
|
focus: true
|
|
Keys.onSpacePressed: video.playbackState == MediaPlayer.PlayingState ? video.pause() : video.play()
|
|
Keys.onLeftPressed: video.seek(video.position - 5000)
|
|
Keys.onRightPressed: video.seek(video.position + 5000)
|
|
}
|
|
\endqml
|
|
|
|
\c Video supports untransformed, stretched, and uniformly scaled
|
|
video presentation. For a description of stretched uniformly scaled
|
|
presentation, see the \l fillMode property description.
|
|
|
|
\sa MediaPlayer, VideoOutput
|
|
|
|
\omit
|
|
\section1 Screen Saver
|
|
|
|
If it is likely that an application will be playing video for an extended
|
|
period of time without user interaction, it may be necessary to disable
|
|
the platform's screen saver. The \l ScreenSaver (from \l QtSystemInfo)
|
|
may be used to disable the screensaver in this fashion:
|
|
|
|
\qml
|
|
import QtSystemInfo 5.0
|
|
|
|
ScreenSaver { screenSaverEnabled: false }
|
|
\endqml
|
|
\endomit
|
|
*/
|
|
|
|
// TODO: Restore Qt System Info docs when the module is released
|
|
|
|
Item {
|
|
id: video
|
|
|
|
/*** Properties of VideoOutput ***/
|
|
/*!
|
|
\qmlproperty enumeration Video::fillMode
|
|
|
|
Set this property to define how the video is scaled to fit the target
|
|
area.
|
|
|
|
\list
|
|
\li VideoOutput.Stretch - the video is scaled to fit
|
|
\li VideoOutput.PreserveAspectFit - the video is scaled uniformly to fit without
|
|
cropping
|
|
\li VideoOutput.PreserveAspectCrop - the video is scaled uniformly to fill, cropping
|
|
if necessary
|
|
\endlist
|
|
|
|
Because this type is for convenience in QML, it does not
|
|
support enumerations directly, so enumerations from \c VideoOutput are
|
|
used to access the available fill modes.
|
|
|
|
The default fill mode is preserveAspectFit.
|
|
*/
|
|
property alias fillMode: videoOut.fillMode
|
|
|
|
/*!
|
|
\qmlproperty enumeration Video::flushMode
|
|
|
|
Set this property to define what \c Video should show
|
|
when playback is finished or stopped.
|
|
|
|
\list
|
|
\li VideoOutput.EmptyFrame - clears video output.
|
|
\li VideoOutput.FirstFrame - shows the first valid frame.
|
|
\li VideoOutput.LastFrame - shows the last valid frame.
|
|
\endlist
|
|
|
|
The default flush mode is EmptyFrame.
|
|
\since 5.15
|
|
*/
|
|
property alias flushMode: videoOut.flushMode
|
|
|
|
/*!
|
|
\qmlproperty int Video::orientation
|
|
|
|
The orientation of the \c Video in degrees. Only multiples of 90
|
|
degrees is supported, that is 0, 90, 180, 270, 360, etc.
|
|
*/
|
|
property alias orientation: videoOut.orientation
|
|
|
|
|
|
/*** Properties of MediaPlayer ***/
|
|
|
|
/*!
|
|
\qmlproperty enumeration Video::playbackState
|
|
|
|
This read only property indicates the playback state of the media.
|
|
|
|
\list
|
|
\li MediaPlayer.PlayingState - the media is playing
|
|
\li MediaPlayer.PausedState - the media is paused
|
|
\li MediaPlayer.StoppedState - the media is stopped
|
|
\endlist
|
|
|
|
The default state is MediaPlayer.StoppedState.
|
|
*/
|
|
property alias playbackState: player.playbackState
|
|
|
|
/*!
|
|
\qmlproperty bool Video::autoLoad
|
|
|
|
This property indicates if loading of media should begin immediately.
|
|
|
|
Defaults to true, if false media will not be loaded until playback is
|
|
started.
|
|
*/
|
|
property alias autoLoad: player.autoLoad
|
|
|
|
/*!
|
|
\qmlproperty real Video::bufferProgress
|
|
|
|
This property holds how much of the data buffer is currently filled,
|
|
from 0.0 (empty) to 1.0
|
|
(full).
|
|
*/
|
|
property alias bufferProgress: player.bufferProgress
|
|
|
|
/*!
|
|
\qmlproperty int Video::duration
|
|
|
|
This property holds the duration of the media in milliseconds.
|
|
|
|
If the media doesn't have a fixed duration (a live stream for example)
|
|
this will be 0.
|
|
*/
|
|
property alias duration: player.duration
|
|
|
|
/*!
|
|
\qmlproperty enumeration Video::error
|
|
|
|
This property holds the error state of the video. It can be one of:
|
|
|
|
\list
|
|
\li MediaPlayer.NoError - there is no current error.
|
|
\li MediaPlayer.ResourceError - the video cannot be played due to a problem
|
|
allocating resources.
|
|
\li MediaPlayer.FormatError - the video format is not supported.
|
|
\li MediaPlayer.NetworkError - the video cannot be played due to network issues.
|
|
\li MediaPlayer.AccessDenied - the video cannot be played due to insufficient
|
|
permissions.
|
|
\li MediaPlayer.ServiceMissing - the video cannot be played because the media
|
|
service could not be
|
|
instantiated.
|
|
\endlist
|
|
*/
|
|
property alias error: player.error
|
|
|
|
/*!
|
|
\qmlproperty string Video::errorString
|
|
|
|
This property holds a string describing the current error condition in more detail.
|
|
*/
|
|
property alias errorString: player.errorString
|
|
|
|
/*!
|
|
\qmlproperty enumeration Video::availability
|
|
|
|
Returns the availability state of the video instance.
|
|
|
|
This is one of:
|
|
\table
|
|
\header \li Value \li Description
|
|
\row \li MediaPlayer.Available
|
|
\li The video player is available to use.
|
|
\row \li MediaPlayer.Busy
|
|
\li The video player is usually available, but some other
|
|
process is utilizing the hardware necessary to play media.
|
|
\row \li MediaPlayer.Unavailable
|
|
\li There are no supported video playback facilities.
|
|
\row \li MediaPlayer.ResourceMissing
|
|
\li There is one or more resources missing, so the video player cannot
|
|
be used. It may be possible to try again at a later time.
|
|
\endtable
|
|
*/
|
|
property alias availability: player.availability
|
|
|
|
/*!
|
|
\qmlproperty bool Video::hasAudio
|
|
|
|
This property holds whether the current media has audio content.
|
|
*/
|
|
property alias hasAudio: player.hasAudio
|
|
|
|
/*!
|
|
\qmlproperty bool Video::hasVideo
|
|
|
|
This property holds whether the current media has video content.
|
|
*/
|
|
property alias hasVideo: player.hasVideo
|
|
|
|
/*!
|
|
\qmlproperty object Video::metaData
|
|
|
|
This property holds the meta data for the current media.
|
|
|
|
See \l{MediaPlayer::metaData}{MediaPlayer.metaData} for details about each meta data key.
|
|
|
|
\sa {QMediaMetaData}
|
|
*/
|
|
property alias metaData: player.metaData
|
|
|
|
/*!
|
|
\qmlproperty bool Video::muted
|
|
|
|
This property holds whether the audio output is muted.
|
|
*/
|
|
property alias muted: player.muted
|
|
|
|
/*!
|
|
\qmlproperty real Video::playbackRate
|
|
|
|
This property holds the rate at which video is played at as a multiple
|
|
of the normal rate.
|
|
*/
|
|
property alias playbackRate: player.playbackRate
|
|
|
|
/*!
|
|
\qmlproperty int Video::position
|
|
|
|
This property holds the current playback position in milliseconds.
|
|
|
|
To change this position, use the \l seek() method.
|
|
|
|
\sa seek()
|
|
*/
|
|
property alias position: player.position
|
|
|
|
/*!
|
|
\qmlproperty enumeration Video::audioRole
|
|
|
|
This property holds the role of the audio stream. It can be set to specify the type of audio
|
|
being played, allowing the system to make appropriate decisions when it comes to volume,
|
|
routing or post-processing.
|
|
|
|
The audio role must be set before setting the source property.
|
|
|
|
Supported values can be retrieved with supportedAudioRoles().
|
|
|
|
The value can be one of:
|
|
\list
|
|
\li MediaPlayer.UnknownRole - the role is unknown or undefined.
|
|
\li MediaPlayer.MusicRole - music.
|
|
\li MediaPlayer.VideoRole - soundtrack from a movie or a video.
|
|
\li MediaPlayer.VoiceCommunicationRole - voice communications, such as telephony.
|
|
\li MediaPlayer.AlarmRole - alarm.
|
|
\li MediaPlayer.NotificationRole - notification, such as an incoming e-mail or a chat request.
|
|
\li MediaPlayer.RingtoneRole - ringtone.
|
|
\li MediaPlayer.AccessibilityRole - for accessibility, such as with a screen reader.
|
|
\li MediaPlayer.SonificationRole - sonification, such as with user interface sounds.
|
|
\li MediaPlayer.GameRole - game audio.
|
|
\li MediaPlayer.CustomRole - The role is specified by customAudioRole.
|
|
\endlist
|
|
|
|
customAudioRole is cleared when this property is set to anything other than CustomRole.
|
|
|
|
\since 5.6
|
|
*/
|
|
property alias audioRole: player.audioRole
|
|
|
|
/*!
|
|
\qmlproperty string Video::customAudioRole
|
|
|
|
This property holds the role of the audio stream when the backend supports audio roles
|
|
unknown to Qt. It can be set to specify the type of audio being played, allowing the
|
|
system to make appropriate decisions when it comes to volume, routing or post-processing.
|
|
|
|
The audio role must be set before setting the source property.
|
|
|
|
audioRole is set to CustomRole when this property is set.
|
|
|
|
\since 5.11
|
|
*/
|
|
property alias customAudioRole: player.customAudioRole
|
|
|
|
/*!
|
|
\qmlproperty bool Video::seekable
|
|
|
|
This property holds whether the playback position of the video can be
|
|
changed.
|
|
|
|
If true, calling the \l seek() method will cause playback to seek to the new position.
|
|
*/
|
|
property alias seekable: player.seekable
|
|
|
|
/*!
|
|
\qmlproperty url Video::source
|
|
|
|
This property holds the source URL of the media.
|
|
|
|
Setting the \l source property clears the current \l playlist, if any.
|
|
*/
|
|
property alias source: player.source
|
|
|
|
/*!
|
|
\qmlproperty Playlist Video::playlist
|
|
|
|
This property holds the playlist used by the media player.
|
|
|
|
Setting the \l playlist property resets the \l source to an empty string.
|
|
|
|
\since 5.6
|
|
*/
|
|
property alias playlist: player.playlist
|
|
|
|
/*!
|
|
\qmlproperty enumeration Video::status
|
|
|
|
This property holds the status of media loading. It can be one of:
|
|
|
|
\list
|
|
\li MediaPlayer.NoMedia - no media has been set.
|
|
\li MediaPlayer.Loading - the media is currently being loaded.
|
|
\li MediaPlayer.Loaded - the media has been loaded.
|
|
\li MediaPlayer.Buffering - the media is buffering data.
|
|
\li MediaPlayer.Stalled - playback has been interrupted while the media is buffering data.
|
|
\li MediaPlayer.Buffered - the media has buffered data.
|
|
\li MediaPlayer.EndOfMedia - the media has played to the end.
|
|
\li MediaPlayer.InvalidMedia - the media cannot be played.
|
|
\li MediaPlayer.UnknownStatus - the status of the media cannot be determined.
|
|
\endlist
|
|
*/
|
|
property alias status: player.status
|
|
|
|
/*!
|
|
\qmlproperty real Video::volume
|
|
|
|
This property holds the audio volume.
|
|
|
|
The volume is scaled linearly from \c 0.0 (silence) to \c 1.0 (full volume). Values outside
|
|
this range will be clamped.
|
|
|
|
The default volume is \c 1.0.
|
|
|
|
UI volume controls should usually be scaled nonlinearly. For example, using a logarithmic
|
|
scale will produce linear changes in perceived loudness, which is what a user would normally
|
|
expect from a volume control. See \l {QtMultimedia::QtMultimedia::convertVolume()}{QtMultimedia.convertVolume()}
|
|
for more details.
|
|
*/
|
|
property alias volume: player.volume
|
|
|
|
/*!
|
|
\qmlproperty bool Video::autoPlay
|
|
|
|
This property determines whether the media should begin playback automatically.
|
|
|
|
Setting to \c true also sets \l autoLoad to \c true. The default is \c false.
|
|
*/
|
|
property alias autoPlay: player.autoPlay
|
|
|
|
/*!
|
|
\qmlproperty int Video::notifyInterval
|
|
|
|
The interval at which notifiable properties will update.
|
|
|
|
The notifiable properties are \l position and \l bufferProgress.
|
|
|
|
The interval is expressed in milliseconds, the default value is 1000.
|
|
|
|
\since 5.9
|
|
*/
|
|
property alias notifyInterval: player.notifyInterval
|
|
|
|
/*!
|
|
\qmlproperty int Video::loops
|
|
|
|
This property holds the number of times the media is played. A value of \c 0 or \c 1 means
|
|
the media will be played only once; set to \c MediaPlayer.Infinite to enable infinite looping.
|
|
|
|
The value can be changed while the media is playing, in which case it will update
|
|
the remaining loops to the new value.
|
|
|
|
The default is \c 1.
|
|
|
|
\since 5.9
|
|
*/
|
|
property alias loops: player.loops
|
|
|
|
/*!
|
|
\qmlsignal Video::paused()
|
|
|
|
This signal is emitted when playback is paused.
|
|
|
|
The corresponding handler is \c onPaused.
|
|
*/
|
|
signal paused
|
|
|
|
/*!
|
|
\qmlsignal Video::stopped()
|
|
|
|
This signal is emitted when playback is stopped.
|
|
|
|
The corresponding handler is \c onStopped.
|
|
*/
|
|
signal stopped
|
|
|
|
/*!
|
|
\qmlsignal Video::playing()
|
|
|
|
This signal is emitted when playback is started or continued.
|
|
|
|
The corresponding handler is \c onPlaying.
|
|
*/
|
|
signal playing
|
|
|
|
VideoOutput {
|
|
id: videoOut
|
|
anchors.fill: video
|
|
source: player
|
|
}
|
|
|
|
MediaPlayer {
|
|
id: player
|
|
onPaused: video.paused()
|
|
onStopped: video.stopped()
|
|
onPlaying: video.playing()
|
|
}
|
|
|
|
/*!
|
|
\qmlmethod Video::play()
|
|
|
|
Starts playback of the media.
|
|
*/
|
|
function play() {
|
|
player.play();
|
|
}
|
|
|
|
/*!
|
|
\qmlmethod Video::pause()
|
|
|
|
Pauses playback of the media.
|
|
*/
|
|
function pause() {
|
|
player.pause();
|
|
}
|
|
|
|
/*!
|
|
\qmlmethod Video::stop()
|
|
|
|
Stops playback of the media.
|
|
*/
|
|
function stop() {
|
|
player.stop();
|
|
}
|
|
|
|
/*!
|
|
\qmlmethod Video::seek(offset)
|
|
|
|
If the \l seekable property is true, seeks the current
|
|
playback position to \a offset.
|
|
|
|
Seeking may be asynchronous, so the \l position property
|
|
may not be updated immediately.
|
|
|
|
\sa seekable, position
|
|
*/
|
|
function seek(offset) {
|
|
player.seek(offset);
|
|
}
|
|
|
|
/*!
|
|
\qmlmethod list<int> Video::supportedAudioRoles()
|
|
|
|
Returns a list of supported audio roles.
|
|
|
|
If setting the audio role is not supported, an empty list is returned.
|
|
|
|
\since 5.6
|
|
\sa audioRole
|
|
*/
|
|
function supportedAudioRoles() {
|
|
return player.supportedAudioRoles();
|
|
}
|
|
|
|
}
|