The QVideoEncoderSettingsControl class provides access to the settings of a media service that performs video encoding. 更多...
| 頭： | #include <QVideoEncoderSettingsControl> |
| qmake: | QT += multimedia |
| 繼承： | QMediaControl |
該類已過時。 提供它是為使舊源代碼能繼續工作。強烈建議不要在新代碼中使用它。
| virtual | ~QVideoEncoderSettingsControl () |
| virtual void | setVideoSettings (const QVideoEncoderSettings & settings ) = 0 |
| virtual QList<qreal> | supportedFrameRates (const QVideoEncoderSettings & settings , bool * continuous = nullptr) const = 0 |
| virtual QList<QSize> | supportedResolutions (const QVideoEncoderSettings & settings , bool * continuous = nullptr) const = 0 |
| virtual QStringList | supportedVideoCodecs () const = 0 |
| virtual QString | videoCodecDescription (const QString & codec ) const = 0 |
| virtual QVideoEncoderSettings | videoSettings () const = 0 |
| QVideoEncoderSettingsControl (QObject * parent = nullptr) |
| QVideoEncoderSettingsControl_iid |
若 QMediaService supports encoding video data it will implement QVideoEncoderSettingsControl. This control provides information about the limits of restricted video encoder options and allows the selection of a set of video encoder settings as specified in a QVideoEncoderSettings 對象。
The functionality provided by this control is exposed to application code through the QMediaRecorder 類。
The interface name of QVideoEncoderSettingsControl is
org.qt-project.qt.videoencodersettingscontrol/5.0
作為定義在
QVideoEncoderSettingsControl_iid
.
另請參閱 QMediaRecorder , QVideoEncoderSettings ，和 QMediaService::requestControl ().
[protected]
QVideoEncoderSettingsControl::
QVideoEncoderSettingsControl
(
QObject
*
parent
= nullptr)
Create a new video encoder settings control object with the given parent .
[虛擬]
QVideoEncoderSettingsControl::
~QVideoEncoderSettingsControl
()
Destroys a video encoder settings control.
[pure virtual]
void
QVideoEncoderSettingsControl::
setVideoSettings
(const
QVideoEncoderSettings
&
settings
)
Sets the selected video encoder settings .
另請參閱 videoSettings ().
[pure virtual]
QList
<
qreal
> QVideoEncoderSettingsControl::
supportedFrameRates
(const
QVideoEncoderSettings
&
settings
,
bool
*
continuous
= nullptr) const
Returns a list of supported frame rates.
If non null video settings parameter is passed, the returned list is reduced to frame rates supported with partial settings like video codec or video resolution applied.
If the encoder supports arbitrary frame rates within the supported range, * continuous 被設為 true，否則 * continuous 被設為 false。
另請參閱 QVideoEncoderSettings::frameRate ().
[pure virtual]
QList
<
QSize
> QVideoEncoderSettingsControl::
supportedResolutions
(const
QVideoEncoderSettings
&
settings
,
bool
*
continuous
= nullptr) const
返迴支持的分辨率列錶。
If non null video settings parameter is passed, the returned list is reduced to resolution supported with partial settings like video codec or 幀速率 applied.
若編碼器支持所支持的分辨率範圍內的任意分辨率，* continuous 被設為 true，否則 * continuous 被設為 false。
另請參閱 QVideoEncoderSettings::resolution ().
[pure virtual]
QStringList
QVideoEncoderSettingsControl::
supportedVideoCodecs
() const
Returns the list of supported video codecs.
[pure virtual]
QString
QVideoEncoderSettingsControl::
videoCodecDescription
(const
QString
&
codec
) const
Returns a description of a video codec .
[pure virtual]
QVideoEncoderSettings
QVideoEncoderSettingsControl::
videoSettings
() const
Returns the video encoder settings.
返迴值可能異於傳遞給 QVideoEncoderSettingsControl::setVideoSettings () 若設定包含默認 (或未定義) 參數。在此情況下，若已解析未定義參數，應返迴它們。
另請參閱 setVideoSettings ().
org.qt-project.qt.videoencodersettingscontrol/5.0
定義接口名為 QVideoEncoderSettingsControl 類。