<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qcameraviewfindersettingscontrol.cpp --> <title>QCameraViewfinderSettingsControl Class | Qt Multimedia 5.12.2</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 5.12</td><td ><a href="qtmultimedia-index.html">Qt Multimedia</a></td><td ><a href="qtmultimedia-modules.html">C++ Classes</a></td><td >QCameraViewfinderSettingsControl</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtmultimedia-index.html">Qt 5.12.2 Reference Documentation</a></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-types">Public Types</a></li> <li class="level1"><a href="#public-functions">Public Functions</a></li> <li class="level1"><a href="#static-public-members">Static Public Members</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">QCameraViewfinderSettingsControl Class</h1> <!-- $$$QCameraViewfinderSettingsControl-brief --> <p>The <a href="qcameraviewfindersettingscontrol.html">QCameraViewfinderSettingsControl</a> class provides an abstract class for controlling camera viewfinder parameters. <a href="#details">More...</a></p> <!-- @@@QCameraViewfinderSettingsControl --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QCameraViewfinderSettingsControl></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="qcameraviewfindersettingscontrol-members.html">List of all members, including inherited members</a></li> </ul> <a name="public-types"></a> <h2 id="public-types">Public Types</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qcameraviewfindersettingscontrol.html#ViewfinderParameter-enum">ViewfinderParameter</a></b> { Resolution, PixelAspectRatio, MinimumFrameRate, MaximumFrameRate, PixelFormat, UserParameter }</td></tr> </table></div> <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="qcameraviewfindersettingscontrol.html#dtor.QCameraViewfinderSettingsControl">~QCameraViewfinderSettingsControl</a></b>()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qcameraviewfindersettingscontrol.html#isViewfinderParameterSupported">isViewfinderParameterSupported</a></b>(QCameraViewfinderSettingsControl::ViewfinderParameter <i>parameter</i>) const = 0</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qcameraviewfindersettingscontrol.html#setViewfinderParameter">setViewfinderParameter</a></b>(QCameraViewfinderSettingsControl::ViewfinderParameter <i>parameter</i>, const QVariant &<i>value</i>) = 0</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual QVariant </td><td class="memItemRight bottomAlign"><b><a href="qcameraviewfindersettingscontrol.html#viewfinderParameter">viewfinderParameter</a></b>(QCameraViewfinderSettingsControl::ViewfinderParameter <i>parameter</i>) const = 0</td></tr> </table></div> <a name="static-public-members"></a> <h2 id="static-public-members">Static Public Members</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> const QMetaObject </td><td class="memItemRight bottomAlign"><b><a href="qcameraviewfindersettingscontrol.html#staticMetaObject-var">staticMetaObject</a></b></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="qcameraviewfindersettingscontrol.html#QCameraViewfinderSettingsControl">QCameraViewfinderSettingsControl</a></b>(QObject *<i>parent</i> = 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="qcameraviewfindersettingscontrol.html#QCameraViewfinderSettingsControl_iid">QCameraViewfinderSettingsControl_iid</a></b></td></tr> </table></div> <a name="details"></a> <!-- $$$QCameraViewfinderSettingsControl-description --> <div class="descr"> <h2 id="details">Detailed Description</h2> <p>The <a href="qcameraviewfindersettingscontrol.html">QCameraViewfinderSettingsControl</a> class provides an abstract class for controlling camera viewfinder parameters.</p> <p>The interface name of <a href="qcameraviewfindersettingscontrol.html">QCameraViewfinderSettingsControl</a> is <code>org.qt-project.qt.cameraviewfindersettingscontrol/5.0</code> as defined in <a href="qcameraviewfindersettingscontrol.html#QCameraViewfinderSettingsControl_iid">QCameraViewfinderSettingsControl_iid</a>.</p> <p><b>Warning:</b> New backends should implement <a href="qcameraviewfindersettingscontrol2.html">QCameraViewfinderSettingsControl2</a> instead. Application developers should request this control only if <a href="qcameraviewfindersettingscontrol2.html">QCameraViewfinderSettingsControl2</a> is not available.</p> </div> <p><b>See also </b><a href="qmediaservice.html#requestControl-1">QMediaService::requestControl</a>(), <a href="qcameraviewfindersettingscontrol2.html">QCameraViewfinderSettingsControl2</a>, and <a href="qcamera.html">QCamera</a>.</p> <!-- @@@QCameraViewfinderSettingsControl --> <div class="types"> <h2>Member Type Documentation</h2> <!-- $$$ViewfinderParameter$$$Resolution$$$PixelAspectRatio$$$MinimumFrameRate$$$MaximumFrameRate$$$PixelFormat$$$UserParameter --> <h3 class="fn" id="ViewfinderParameter-enum"><a name="ViewfinderParameter-enum"></a>enum QCameraViewfinderSettingsControl::<span class="name">ViewfinderParameter</span></h3> <div class="table"><table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr> <tr><td class="topAlign"><code>QCameraViewfinderSettingsControl::Resolution</code></td><td class="topAlign tblval"><code>0</code></td><td class="topAlign">Viewfinder resolution, QSize.</td></tr> <tr><td class="topAlign"><code>QCameraViewfinderSettingsControl::PixelAspectRatio</code></td><td class="topAlign tblval"><code>1</code></td><td class="topAlign">Pixel aspect ratio, QSize as in <a href="qvideosurfaceformat.html#pixelAspectRatio">QVideoSurfaceFormat::pixelAspectRatio</a></td></tr> <tr><td class="topAlign"><code>QCameraViewfinderSettingsControl::MinimumFrameRate</code></td><td class="topAlign tblval"><code>2</code></td><td class="topAlign">Minimum viewfinder frame rate, qreal</td></tr> <tr><td class="topAlign"><code>QCameraViewfinderSettingsControl::MaximumFrameRate</code></td><td class="topAlign tblval"><code>3</code></td><td class="topAlign">Maximum viewfinder frame rate, qreal</td></tr> <tr><td class="topAlign"><code>QCameraViewfinderSettingsControl::PixelFormat</code></td><td class="topAlign tblval"><code>4</code></td><td class="topAlign">Viewfinder pixel format, <a href="qvideoframe.html#PixelFormat-enum">QVideoFrame::PixelFormat</a></td></tr> <tr><td class="topAlign"><code>QCameraViewfinderSettingsControl::UserParameter</code></td><td class="topAlign tblval"><code>1000</code></td><td class="topAlign">The base value for platform specific extended parameters. For such parameters the sequential values starting from UserParameter should be used.</td></tr> </table></div> <!-- @@@ViewfinderParameter --> </div> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$QCameraViewfinderSettingsControl[overload1]$$$QCameraViewfinderSettingsControlQObject* --> <h3 class="fn" id="QCameraViewfinderSettingsControl"><a name="QCameraViewfinderSettingsControl"></a><code>[protected] </code>QCameraViewfinderSettingsControl::<span class="name">QCameraViewfinderSettingsControl</span>(<span class="type">QObject</span> *<i>parent</i> = nullptr)</h3> <p>Constructs a camera viewfinder control object with <i>parent</i>.</p> <!-- @@@QCameraViewfinderSettingsControl --> <!-- $$$~QCameraViewfinderSettingsControl[overload1]$$$~QCameraViewfinderSettingsControl --> <h3 class="fn" id="dtor.QCameraViewfinderSettingsControl"><a name="dtor.QCameraViewfinderSettingsControl"></a><code>[virtual] </code>QCameraViewfinderSettingsControl::<span class="name">~QCameraViewfinderSettingsControl</span>()</h3> <p>Destroys the camera viewfinder control object.</p> <!-- @@@~QCameraViewfinderSettingsControl --> <!-- $$$isViewfinderParameterSupported[overload1]$$$isViewfinderParameterSupportedQCameraViewfinderSettingsControl::ViewfinderParameter --> <h3 class="fn" id="isViewfinderParameterSupported"><a name="isViewfinderParameterSupported"></a><code>[pure virtual] </code><span class="type">bool</span> QCameraViewfinderSettingsControl::<span class="name">isViewfinderParameterSupported</span>(<span class="type"><a href="qcameraviewfindersettingscontrol.html#ViewfinderParameter-enum">QCameraViewfinderSettingsControl::ViewfinderParameter</a></span> <i>parameter</i>) const</h3> <!-- @@@isViewfinderParameterSupported --> <!-- $$$setViewfinderParameter[overload1]$$$setViewfinderParameterQCameraViewfinderSettingsControl::ViewfinderParameterconstQVariant& --> <h3 class="fn" id="setViewfinderParameter"><a name="setViewfinderParameter"></a><code>[pure virtual] </code><span class="type">void</span> QCameraViewfinderSettingsControl::<span class="name">setViewfinderParameter</span>(<span class="type"><a href="qcameraviewfindersettingscontrol.html#ViewfinderParameter-enum">QCameraViewfinderSettingsControl::ViewfinderParameter</a></span> <i>parameter</i>, const <span class="type">QVariant</span> &<i>value</i>)</h3> <p><b>See also </b><a href="qcameraviewfindersettingscontrol.html#viewfinderParameter">viewfinderParameter</a>().</p> <!-- @@@setViewfinderParameter --> <!-- $$$viewfinderParameter[overload1]$$$viewfinderParameterQCameraViewfinderSettingsControl::ViewfinderParameter --> <h3 class="fn" id="viewfinderParameter"><a name="viewfinderParameter"></a><code>[pure virtual] </code><span class="type">QVariant</span> QCameraViewfinderSettingsControl::<span class="name">viewfinderParameter</span>(<span class="type"><a href="qcameraviewfindersettingscontrol.html#ViewfinderParameter-enum">QCameraViewfinderSettingsControl::ViewfinderParameter</a></span> <i>parameter</i>) const</h3> <p><b>See also </b><a href="qcameraviewfindersettingscontrol.html#setViewfinderParameter">setViewfinderParameter</a>().</p> <!-- @@@viewfinderParameter --> </div> <div class="macros"> <h2>Macro Documentation</h2> <!-- $$$QCameraViewfinderSettingsControl_iid[overload1]$$$QCameraViewfinderSettingsControl_iid --> <h3 class="fn" id="QCameraViewfinderSettingsControl_iid"><a name="QCameraViewfinderSettingsControl_iid"></a><span class="name">QCameraViewfinderSettingsControl_iid</span></h3> <p><code>org.qt-project.qt.cameraviewfindersettingscontrol/5.0</code></p> <p>Defines the interface name of the <a href="qcameraviewfindersettingscontrol.html">QCameraViewfinderSettingsControl</a> class.</p> <!-- @@@QCameraViewfinderSettingsControl_iid --> </div> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 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>