<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qvideoencodersettingscontrol.cpp --> <title>QVideoEncoderSettingsControl Class | Qt Multimedia 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtmultimedia-index.html">Qt Multimedia</a></td><td ><a href="qtmultimedia-modules.html">C++ Classes</a></td><td >QVideoEncoderSettingsControl</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#public-functions">Public Functions</a></li> <li class="level1"><a href="#protected-functions">Protected Functions</a></li> <li class="level1"><a href="#macros">Macros</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">QVideoEncoderSettingsControl Class</h1> <!-- $$$QVideoEncoderSettingsControl-brief --> <p>The <a href="qvideoencodersettingscontrol.html">QVideoEncoderSettingsControl</a> class provides access to the settings of a media service that performs video encoding. <a href="#details">More...</a></p> <!-- @@@QVideoEncoderSettingsControl --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QVideoEncoderSettingsControl></span> </td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += multimedia</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <a href="qmediacontrol.html">QMediaControl</a></td></tr></table></div><ul> <li><a href="qvideoencodersettingscontrol-members.html">List of all members, including inherited members</a></li> </ul> <a name="public-functions"></a> <h2 id="public-functions">Public Functions</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qvideoencodersettingscontrol.html#dtor.QVideoEncoderSettingsControl">~QVideoEncoderSettingsControl</a></b>()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qvideoencodersettingscontrol.html#setVideoSettings">setVideoSettings</a></b>(const QVideoEncoderSettings &<i>settings</i>) = 0</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual QList<qreal> </td><td class="memItemRight bottomAlign"><b><a href="qvideoencodersettingscontrol.html#supportedFrameRates">supportedFrameRates</a></b>(const QVideoEncoderSettings &<i>settings</i>, bool *<i>continuous</i> = Q_NULLPTR) const = 0</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual QList<QSize> </td><td class="memItemRight bottomAlign"><b><a href="qvideoencodersettingscontrol.html#supportedResolutions">supportedResolutions</a></b>(const QVideoEncoderSettings &<i>settings</i>, bool *<i>continuous</i> = Q_NULLPTR) const = 0</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual QStringList </td><td class="memItemRight bottomAlign"><b><a href="qvideoencodersettingscontrol.html#supportedVideoCodecs">supportedVideoCodecs</a></b>() const = 0</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual QString </td><td class="memItemRight bottomAlign"><b><a href="qvideoencodersettingscontrol.html#videoCodecDescription">videoCodecDescription</a></b>(const QString &<i>codec</i>) const = 0</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual QVideoEncoderSettings </td><td class="memItemRight bottomAlign"><b><a href="qvideoencodersettingscontrol.html#videoSettings">videoSettings</a></b>() const = 0</td></tr> </table></div> <a name="protected-functions"></a> <h2 id="protected-functions">Protected Functions</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qvideoencodersettingscontrol.html#QVideoEncoderSettingsControl">QVideoEncoderSettingsControl</a></b>(QObject *<i>parent</i> = Q_NULLPTR)</td></tr> </table></div> <a name="macros"></a> <h2 id="macros">Macros</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qvideoencodersettingscontrol.html#QVideoEncoderSettingsControl_iid">QVideoEncoderSettingsControl_iid</a></b></td></tr> </table></div> <a name="details"></a> <!-- $$$QVideoEncoderSettingsControl-description --> <div class="descr"> <h2 id="details">Detailed Description</h2> <p>The <a href="qvideoencodersettingscontrol.html">QVideoEncoderSettingsControl</a> class provides access to the settings of a media service that performs video encoding.</p> <p>If a <a href="qmediaservice.html">QMediaService</a> supports encoding video data it will implement <a href="qvideoencodersettingscontrol.html">QVideoEncoderSettingsControl</a>. 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 <a href="qvideoencodersettings.html">QVideoEncoderSettings</a> object.</p> <p>The functionality provided by this control is exposed to application code through the <a href="qmediarecorder.html">QMediaRecorder</a> class.</p> <p>The interface name of <a href="qvideoencodersettingscontrol.html">QVideoEncoderSettingsControl</a> is <code>org.qt-project.qt.videoencodersettingscontrol/5.0</code> as defined in <a href="qvideoencodersettingscontrol.html#QVideoEncoderSettingsControl_iid">QVideoEncoderSettingsControl_iid</a>.</p> </div> <p><b>See also </b><a href="qmediarecorder.html">QMediaRecorder</a>, <a href="qvideoencodersettings.html">QVideoEncoderSettings</a>, and <a href="qmediaservice.html#requestControl-1">QMediaService::requestControl</a>().</p> <!-- @@@QVideoEncoderSettingsControl --> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$QVideoEncoderSettingsControl[overload1]$$$QVideoEncoderSettingsControlQObject* --> <h3 class="fn" id="QVideoEncoderSettingsControl"><a name="QVideoEncoderSettingsControl"></a><code>[protected] </code>QVideoEncoderSettingsControl::<span class="name">QVideoEncoderSettingsControl</span>(<span class="type">QObject</span> *<i>parent</i> = Q_NULLPTR)</h3> <p>Create a new video encoder settings control object with the given <i>parent</i>.</p> <!-- @@@QVideoEncoderSettingsControl --> <!-- $$$~QVideoEncoderSettingsControl[overload1]$$$~QVideoEncoderSettingsControl --> <h3 class="fn" id="dtor.QVideoEncoderSettingsControl"><a name="dtor.QVideoEncoderSettingsControl"></a><code>[virtual] </code>QVideoEncoderSettingsControl::<span class="name">~QVideoEncoderSettingsControl</span>()</h3> <p>Destroys a video encoder settings control.</p> <!-- @@@~QVideoEncoderSettingsControl --> <!-- $$$setVideoSettings[overload1]$$$setVideoSettingsconstQVideoEncoderSettings& --> <h3 class="fn" id="setVideoSettings"><a name="setVideoSettings"></a><code>[pure virtual] </code><span class="type">void</span> QVideoEncoderSettingsControl::<span class="name">setVideoSettings</span>(const <span class="type"><a href="qvideoencodersettings.html">QVideoEncoderSettings</a></span> &<i>settings</i>)</h3> <p>Sets the selected video encoder <i>settings</i>.</p> <p><b>See also </b><a href="qvideoencodersettingscontrol.html#videoSettings">videoSettings</a>().</p> <!-- @@@setVideoSettings --> <!-- $$$supportedFrameRates[overload1]$$$supportedFrameRatesconstQVideoEncoderSettings&bool* --> <h3 class="fn" id="supportedFrameRates"><a name="supportedFrameRates"></a><code>[pure virtual] </code><span class="type">QList</span><<span class="type">qreal</span>> QVideoEncoderSettingsControl::<span class="name">supportedFrameRates</span>(const <span class="type"><a href="qvideoencodersettings.html">QVideoEncoderSettings</a></span> &<i>settings</i>, <span class="type">bool</span> *<i>continuous</i> = Q_NULLPTR) const</h3> <p>Returns a list of supported frame rates.</p> <p>If non null video <i>settings</i> parameter is passed, the returned list is reduced to frame rates supported with partial settings like <a href="qvideoencodersettings.html#setCodec">video codec</a> or <a href="qvideoencodersettings.html#setResolution">video resolution</a> applied.</p> <p>If the encoder supports arbitrary frame rates within the supported range, *<i>continuous</i> is set to true, otherwise *<i>continuous</i> is set to false.</p> <p><b>See also </b><a href="qvideoencodersettings.html#frameRate">QVideoEncoderSettings::frameRate</a>().</p> <!-- @@@supportedFrameRates --> <!-- $$$supportedResolutions[overload1]$$$supportedResolutionsconstQVideoEncoderSettings&bool* --> <h3 class="fn" id="supportedResolutions"><a name="supportedResolutions"></a><code>[pure virtual] </code><span class="type">QList</span><<span class="type">QSize</span>> QVideoEncoderSettingsControl::<span class="name">supportedResolutions</span>(const <span class="type"><a href="qvideoencodersettings.html">QVideoEncoderSettings</a></span> &<i>settings</i>, <span class="type">bool</span> *<i>continuous</i> = Q_NULLPTR) const</h3> <p>Returns a list of supported resolutions.</p> <p>If non null video <i>settings</i> parameter is passed, the returned list is reduced to resolution supported with partial settings like <a href="qvideoencodersettings.html#setCodec">video codec</a> or <a href="qvideoencodersettings.html#setFrameRate">frame rate</a> applied.</p> <p>If the encoder supports arbitrary resolutions within the supported resolutions range, *<i>continuous</i> is set to true, otherwise *<i>continuous</i> is set to false.</p> <p><b>See also </b><a href="qvideoencodersettings.html#resolution">QVideoEncoderSettings::resolution</a>().</p> <!-- @@@supportedResolutions --> <!-- $$$supportedVideoCodecs[overload1]$$$supportedVideoCodecs --> <h3 class="fn" id="supportedVideoCodecs"><a name="supportedVideoCodecs"></a><code>[pure virtual] </code><span class="type">QStringList</span> QVideoEncoderSettingsControl::<span class="name">supportedVideoCodecs</span>() const</h3> <p>Returns the list of supported video codecs.</p> <!-- @@@supportedVideoCodecs --> <!-- $$$videoCodecDescription[overload1]$$$videoCodecDescriptionconstQString& --> <h3 class="fn" id="videoCodecDescription"><a name="videoCodecDescription"></a><code>[pure virtual] </code><span class="type">QString</span> QVideoEncoderSettingsControl::<span class="name">videoCodecDescription</span>(const <span class="type">QString</span> &<i>codec</i>) const</h3> <p>Returns a description of a video <i>codec</i>.</p> <!-- @@@videoCodecDescription --> <!-- $$$videoSettings[overload1]$$$videoSettings --> <h3 class="fn" id="videoSettings"><a name="videoSettings"></a><code>[pure virtual] </code><span class="type"><a href="qvideoencodersettings.html">QVideoEncoderSettings</a></span> QVideoEncoderSettingsControl::<span class="name">videoSettings</span>() const</h3> <p>Returns the video encoder settings.</p> <p>The returned value may be different tha passed to <a href="qvideoencodersettingscontrol.html#setVideoSettings">QVideoEncoderSettingsControl::setVideoSettings</a>() if the settings contains the default or undefined parameters. In this case if the undefined parameters are already resolved, they should be returned.</p> <p><b>See also </b><a href="qvideoencodersettingscontrol.html#setVideoSettings">setVideoSettings</a>().</p> <!-- @@@videoSettings --> </div> <div class="macros"> <h2>Macro Documentation</h2> <!-- $$$QVideoEncoderSettingsControl_iid[overload1]$$$QVideoEncoderSettingsControl_iid --> <h3 class="fn" id="QVideoEncoderSettingsControl_iid"><a name="QVideoEncoderSettingsControl_iid"></a><span class="name">QVideoEncoderSettingsControl_iid</span></h3> <p><code>org.qt-project.qt.videoencodersettingscontrol/5.0</code></p> <p>Defines the interface name of the <a href="qvideoencodersettingscontrol.html">QVideoEncoderSettingsControl</a> class.</p> <!-- @@@QVideoEncoderSettingsControl_iid --> </div> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>