这是一个播放多媒体流的类
几个重要的枚举类型
enum QMediaPlayer::MediaStatus
Defines the status of a media player's current media.
| Constant | Value | Description |
|---|---|---|
| QMediaPlayer::UnknownMediaStatus | 0 | The status of the media cannot be determined. |
| QMediaPlayer::NoMedia | 1 | The is no current media. The player is in the StoppedState. |
| QMediaPlayer::LoadingMedia | 2 | The current media is being loaded. The player may be in any state. |
| QMediaPlayer::LoadedMedia | 3 | The current media has been loaded. The player is in the StoppedState. |
| QMediaPlayer::StalledMedia | 4 | Playback of the current media has stalled due to insufficient buffering or some other temporary interruption. The player is in thePlayingState or PausedState. |
| QMediaPlayer::BufferingMedia | 5 | The player is buffering data but has enough data buffered for playback to continue for the immediate future. The player is in thePlayingState or PausedState. |
| QMediaPlayer::BufferedMedia | 6 | The player has fully buffered the current media. The player is in thePlayingState or PausedState. |
| QMediaPlayer::EndOfMedia | 7 | Playback has reached the end of the current media. The player is in theStoppedState. |
| QMediaPlayer::InvalidMedia | 8 | The current media cannot be played. The player is in the StoppedState. |
Properties：
- audioAvailable : const bool 音频是否有效 notifier信号 void audioAvailableChanged(bool
available) - bufferStatus : const int This property holds the percentage of the temporary buffer filled before playback begins
or resumes, from (empty) to (full) - currentMedia : const QMediaContent 当前正在播放的媒体的内容
- duration : const qint64 当前媒体的duration notifier信号 void durationChanged(qint64
duration) - error : const QString a string describing the last error condition
- media : QMediaContent a string describing the last error condition
- mediaStatus : const MediaStatus 当前媒体流的状态 notifier信号 void mediaStatusChanged(QMediaPlayer::MediaStatus
status) - muted : bool 是否静音 isMuted();setMuted() notifier信号 void
mutedChanged(bool muted)
- playbackRate : qreal 播放速率；1是正常速率，大于1加快播放 void setPlaybackRate(qreal
rate)；notifier信号 void playbackRateChanged(qreal rate) - position : qint64 决定当前视频的播放位置（ms） void setPosition(qint64 position)
notifier信号 void positionChanged(qint64 position) - seekable : const bool may change across the life time of the
QMediaPlayer object, use the seekableChanged() signal to monitor changes. - state : const State 播放器的播放状态 notifer signal void
stateChanged(QMediaPlayer::State state) - videoAvailable : const bool
- volume : int The playback volume is linear in effect and the value can range from 0 - 100 notifer signal void
volumeChanged(int volume)
公有成员函数
| QMediaPlayer(QObject * parent = 0, Flags flags = 0) | |
| ~QMediaPlayer() | |
| int | bufferStatus() const |
| QMediaContent | currentMedia() const |
| QNetworkConfiguration | currentNetworkConfiguration() const |
| qint64 | duration() const |
| Error | error() const |
| QString | errorString() const |
| bool | isAudioAvailable() const |
| bool | isMuted() const |
| bool | isSeekable() const |
| bool | isVideoAvailable() const |
| QMediaContent | media() const |
| MediaStatus | mediaStatus() const |
| const QIODevice * | mediaStream() const |
| qreal | playbackRate() const |
| QMediaPlaylist * | playlist() const |
| qint64 | position() const |
| void | setVideoOutput(QVideoWidget * output) Attach a QVideoWidget video output to the media player ，可替换新 |
| void | setVideoOutput(QGraphicsVideoItem * output) |
| void | setVideoOutput(QAbstractVideoSurface * surface) Sets a video surface as the video output of a media player |
| State | state() const |
| int | volume() const |
公有槽
| void | pause() |
| void | play() 开始或重新开始播放当前媒体流 |
| void | setMedia(const QMediaContent & media, QIODevice * stream = 0) |
| void | setMuted(bool muted) |
| void | setNetworkConfigurations(const QList<QNetworkConfiguration> & configurations) |
| void | setPlaybackRate(qreal rate) |
| void | setPlaylist(QMediaPlaylist * playlist) |
| void | setPosition(qint64 position) |
| void | setVolume(int volume) |
| void | stop() Stop playing, and reset the play position to the beginning. |
信号：
| void | audioAvailableChanged(bool available) |
| void | bufferStatusChanged(int percentFilled) |
| void | currentMediaChanged(const QMediaContent & media) |
| void | durationChanged(qint64 duration) |
| void | error(QMediaPlayer::Error error) |
| void | mediaChanged(const QMediaContent & media) |
| void | mediaStatusChanged(QMediaPlayer::MediaStatus status) |
| void | mutedChanged(bool muted) |
| void | networkConfigurationChanged(const QNetworkConfiguration & configuration) |
| void | playbackRateChanged(qreal rate) |
| void | positionChanged(qint64 position) |
| void | seekableChanged(bool seekable) |
| void | stateChanged(QMediaPlayer::State state) |
| void | videoAvailableChanged(bool videoAvailable) |
| void | volumeChanged(int volume) |