A multimedia backend provides the glue between platform-specific libraries, and Qt Multimedia. In some cases the available cross-platform Multimedia APIs or implementations are not sufficient, or not immediately available on a certain platform. Alternatively, the multimedia implementation on a platform might expose certain extra properties or functionality that other platforms do not, or a finer degree of control might be possible. For these cases, it is possible to use extended controls directly.
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访问 QMediaService 音频解码功能 |
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访问履行音频编码媒体服务的设置 |
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Audio input selector media control |
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Audio output selector media control |
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控制媒体对象音频角色 |
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Control for setting the capture buffer format |
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Control for setting capture destination |
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Abstract base class for classes that control still cameras or video cameras |
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允许控制摄像头曝光参数 |
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Allows controlling feedback (sounds etc) during camera operation |
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Allows controlling a camera's flash |
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Supplies control for focusing related camera parameters |
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Control interface for image capture services |
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Abstract class for controlling image processing parameters, like white balance, contrast, saturation, sharpening and denoising |
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Camera info media control |
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Abstract base class for classes that control still cameras or video cameras |
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Abstract class for controlling camera viewfinder parameters |
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访问摄像头媒体服务的取景器设置 |
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Supplies control for optical and digital camera zoom |
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Access to the settings of a media service that performs image encoding |
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允许控制媒体对象探测音频数据 |
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Supplies a control for reporting availability of a service |
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Access to the output container format of a QMediaService |
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Access to the gapless playback related control of a QMediaService |
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Allows the setting of the Network Access Point for media related activities |
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Access to the media playing functionality of a QMediaService |
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访问 QMediaService 录制功能 |
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Media stream selection control |
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Allows control over probing video frames in media objects |
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Read access to the meta-data of a QMediaService's media |
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Write access to the meta-data of a QMediaService's media |
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Access to the RDS functionality of the radio in the QMediaService |
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Access to the radio tuning functionality of a QMediaService |
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Video device selector media control |
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Access to the settings of a media service that performs video encoding |
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把视频渲染到 QAbstractVideoSurface 的媒体控件 |
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把视频渲染到窗口的媒体控件 |
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Base interface for media service controls |
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Common base class for media service implementations |
