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<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 >QCameraImageCaptureControl</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtmultimedia-index.html">Qt 5.12.6 Reference Documentation</a></td>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#signals">Signals</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>
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<h1 class="title">QCameraImageCaptureControl Class</h1>
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<p>The <a href="qcameraimagecapturecontrol.html">QCameraImageCaptureControl</a> class provides a control interface for image capture services. <a href="#details">More...</a></p>
<!-- @@@QCameraImageCaptureControl -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign">   <span class="preprocessor">#include &lt;QCameraImageCaptureControl&gt;</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="qcameraimagecapturecontrol-members.html">List of all members, including inherited members</a></li>
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<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="qcameraimagecapturecontrol.html#dtor.QCameraImageCaptureControl">~QCameraImageCaptureControl</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#cancelCapture">cancelCapture</a></b>() = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual int </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#capture">capture</a></b>(const QString &amp;<i>fileName</i>) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QCameraImageCapture::DriveMode </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#driveMode">driveMode</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#isReadyForCapture">isReadyForCapture</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#setDriveMode">setDriveMode</a></b>(QCameraImageCapture::DriveMode <i>mode</i>) = 0</td></tr>
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<a name="signals"></a>
<h2 id="signals">Signals</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#error">error</a></b>(int <i>id</i>, int <i>error</i>, const QString &amp;<i>errorString</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#imageAvailable">imageAvailable</a></b>(int <i>requestId</i>, const QVideoFrame &amp;<i>buffer</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#imageCaptured">imageCaptured</a></b>(int <i>requestId</i>, const QImage &amp;<i>preview</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#imageExposed">imageExposed</a></b>(int <i>requestId</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#imageMetadataAvailable">imageMetadataAvailable</a></b>(int <i>id</i>, const QString &amp;<i>key</i>, const QVariant &amp;<i>value</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#imageSaved">imageSaved</a></b>(int <i>requestId</i>, const QString &amp;<i>fileName</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#readyForCaptureChanged">readyForCaptureChanged</a></b>(bool <i>ready</i>)</td></tr>
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<a name="static-public-members"></a>
<h2 id="static-public-members">Static Public Members</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> const QMetaObject </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#staticMetaObject-var">staticMetaObject</a></b></td></tr>
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<a name="protected-functions"></a>
<h2 id="protected-functions">Protected Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#QCameraImageCaptureControl">QCameraImageCaptureControl</a></b>(QObject *<i>parent</i> = nullptr)</td></tr>
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<a name="macros"></a>
<h2 id="macros">Macros</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qcameraimagecapturecontrol.html#QCameraImageCaptureControl_iid">QCameraImageCaptureControl_iid</a></b></td></tr>
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<a name="details"></a>
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<div class="descr">
<h2 id="details">Detailed Description</h2>
<p>The <a href="qcameraimagecapturecontrol.html">QCameraImageCaptureControl</a> class provides a control interface for image capture services.</p>
<p>The interface name of <a href="qcameraimagecapturecontrol.html">QCameraImageCaptureControl</a> is <code>org.qt-project.qt.cameraimagecapturecontrol/5.0</code> as defined in <a href="qcameraimagecapturecontrol.html#QCameraImageCaptureControl_iid">QCameraImageCaptureControl_iid</a>.</p>
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<p><b>See also </b><a href="qmediaservice.html#requestControl-1">QMediaService::requestControl</a>().</p>
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<div class="func">
<h2>Member Function Documentation</h2>
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<h3 class="fn" id="QCameraImageCaptureControl"><a name="QCameraImageCaptureControl"></a><code>[protected] </code>QCameraImageCaptureControl::<span class="name">QCameraImageCaptureControl</span>(<span class="type">QObject</span> *<i>parent</i> = nullptr)</h3>
<p>Constructs a new image capture control object with the given <i>parent</i></p>
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<!-- $$$~QCameraImageCaptureControl[overload1]$$$~QCameraImageCaptureControl -->
<h3 class="fn" id="dtor.QCameraImageCaptureControl"><a name="dtor.QCameraImageCaptureControl"></a><code>[virtual] </code>QCameraImageCaptureControl::<span class="name">~QCameraImageCaptureControl</span>()</h3>
<p>Destroys an image capture control.</p>
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<!-- $$$cancelCapture[overload1]$$$cancelCapture -->
<h3 class="fn" id="cancelCapture"><a name="cancelCapture"></a><code>[pure virtual] </code><span class="type">void</span> QCameraImageCaptureControl::<span class="name">cancelCapture</span>()</h3>
<p>Cancel pending capture requests.</p>
<!-- @@@cancelCapture -->
<!-- $$$capture[overload1]$$$captureconstQString& -->
<h3 class="fn" id="capture"><a name="capture"></a><code>[pure virtual] </code><span class="type">int</span> QCameraImageCaptureControl::<span class="name">capture</span>(const <span class="type">QString</span> &amp;<i>fileName</i>)</h3>
<p>Initiates the capture of an image to <i>fileName</i>. The <i>fileName</i> can be relative or empty, in this case the service should use the system specific place and file naming scheme.</p>
<p>The Camera service should save all the capture parameters like exposure settings or image processing parameters, so changes to camera parameters after capture() is called do not affect previous capture requests.</p>
<p>Returns the capture request id number, which is used later with <a href="qcameraimagecapturecontrol.html#imageExposed">imageExposed</a>(), <a href="qcameraimagecapturecontrol.html#imageCaptured">imageCaptured</a>() and <a href="qcameraimagecapturecontrol.html#imageSaved">imageSaved</a>() signals.</p>
<!-- @@@capture -->
<!-- $$$driveMode[overload1]$$$driveMode -->
<h3 class="fn" id="driveMode"><a name="driveMode"></a><code>[pure virtual] </code><span class="type"><a href="qcameraimagecapture.html#DriveMode-enum">QCameraImageCapture::DriveMode</a></span> QCameraImageCaptureControl::<span class="name">driveMode</span>() const</h3>
<p>Returns the current camera drive mode.</p>
<p><b>See also </b><a href="qcameraimagecapturecontrol.html#setDriveMode">setDriveMode</a>().</p>
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<h3 class="fn" id="error"><a name="error"></a><code>[signal] </code><span class="type">void</span> QCameraImageCaptureControl::<span class="name">error</span>(<span class="type">int</span> <i>id</i>, <span class="type">int</span> <i>error</i>, const <span class="type">QString</span> &amp;<i>errorString</i>)</h3>
<p>Signals the capture request <i>id</i> failed with <i>error</i> code and message <i>errorString</i>.</p>
<p><b>See also </b><a href="qcameraimagecapture.html#Error-enum">QCameraImageCapture::Error</a>.</p>
<!-- @@@error -->
<!-- $$$imageAvailable[overload1]$$$imageAvailableintconstQVideoFrame& -->
<h3 class="fn" id="imageAvailable"><a name="imageAvailable"></a><code>[signal] </code><span class="type">void</span> QCameraImageCaptureControl::<span class="name">imageAvailable</span>(<span class="type">int</span> <i>requestId</i>, const <span class="type"><a href="qvideoframe.html">QVideoFrame</a></span> &amp;<i>buffer</i>)</h3>
<p>Signals that a captured <i>buffer</i> with a <i>requestId</i> is available.</p>
<!-- @@@imageAvailable -->
<!-- $$$imageCaptured[overload1]$$$imageCapturedintconstQImage& -->
<h3 class="fn" id="imageCaptured"><a name="imageCaptured"></a><code>[signal] </code><span class="type">void</span> QCameraImageCaptureControl::<span class="name">imageCaptured</span>(<span class="type">int</span> <i>requestId</i>, const <span class="type">QImage</span> &amp;<i>preview</i>)</h3>
<p>Signals that an image with it <i>requestId</i> has been captured and a <i>preview</i> is available.</p>
<!-- @@@imageCaptured -->
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<h3 class="fn" id="imageExposed"><a name="imageExposed"></a><code>[signal] </code><span class="type">void</span> QCameraImageCaptureControl::<span class="name">imageExposed</span>(<span class="type">int</span> <i>requestId</i>)</h3>
<p>Signals that an image with it <i>requestId</i> has just been exposed. This signal can be used for the shutter sound or other indicaton.</p>
<!-- @@@imageExposed -->
<!-- $$$imageMetadataAvailable[overload1]$$$imageMetadataAvailableintconstQString&constQVariant& -->
<h3 class="fn" id="imageMetadataAvailable"><a name="imageMetadataAvailable"></a><code>[signal] </code><span class="type">void</span> QCameraImageCaptureControl::<span class="name">imageMetadataAvailable</span>(<span class="type">int</span> <i>id</i>, const <span class="type">QString</span> &amp;<i>key</i>, const <span class="type">QVariant</span> &amp;<i>value</i>)</h3>
<p>Signals that a metadata for an image with request <i>id</i> is available. Signal also contains the <i>key</i> and <i>value</i> of the metadata.</p>
<p>This signal should be emitted between <a href="qcameraimagecapturecontrol.html#imageExposed">imageExposed</a> and <a href="qcameraimagecapturecontrol.html#imageSaved">imageSaved</a> signals.</p>
<!-- @@@imageMetadataAvailable -->
<!-- $$$imageSaved[overload1]$$$imageSavedintconstQString& -->
<h3 class="fn" id="imageSaved"><a name="imageSaved"></a><code>[signal] </code><span class="type">void</span> QCameraImageCaptureControl::<span class="name">imageSaved</span>(<span class="type">int</span> <i>requestId</i>, const <span class="type">QString</span> &amp;<i>fileName</i>)</h3>
<p>Signals that a captured image with a <i>requestId</i> has been saved to <i>fileName</i>.</p>
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<!-- $$$isReadyForCapture[overload1]$$$isReadyForCapture -->
<h3 class="fn" id="isReadyForCapture"><a name="isReadyForCapture"></a><code>[pure virtual] </code><span class="type">bool</span> QCameraImageCaptureControl::<span class="name">isReadyForCapture</span>() const</h3>
<p>Identifies if a capture control is ready to perform a capture immediately (all the resources necessary for image capture are allocated, hardware initialized, flash is charged, etc).</p>
<p>Returns true if the camera is ready for capture; and false if it is not.</p>
<p>It's permissible to call <a href="qcameraimagecapturecontrol.html#capture">capture</a>() while the camera status is <a href="qcamera.html#Status-enum">QCamera::ActiveStatus</a> regardless of isReadyForCapture property value. If camera is not ready to capture image immediately, the capture request is queued with all the related camera settings to be executed as soon as possible.</p>
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<h3 class="fn" id="readyForCaptureChanged"><a name="readyForCaptureChanged"></a><code>[signal] </code><span class="type">void</span> QCameraImageCaptureControl::<span class="name">readyForCaptureChanged</span>(<span class="type">bool</span> <i>ready</i>)</h3>
<p>Signals that a capture control's <i>ready</i> state has changed.</p>
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<!-- $$$setDriveMode[overload1]$$$setDriveModeQCameraImageCapture::DriveMode -->
<h3 class="fn" id="setDriveMode"><a name="setDriveMode"></a><code>[pure virtual] </code><span class="type">void</span> QCameraImageCaptureControl::<span class="name">setDriveMode</span>(<span class="type"><a href="qcameraimagecapture.html#DriveMode-enum">QCameraImageCapture::DriveMode</a></span> <i>mode</i>)</h3>
<p>Sets the current camera drive <i>mode</i>.</p>
<p><b>See also </b><a href="qcameraimagecapturecontrol.html#driveMode">driveMode</a>().</p>
<!-- @@@setDriveMode -->
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<div class="macros">
<h2>Macro Documentation</h2>
<!-- $$$QCameraImageCaptureControl_iid[overload1]$$$QCameraImageCaptureControl_iid -->
<h3 class="fn" id="QCameraImageCaptureControl_iid"><a name="QCameraImageCaptureControl_iid"></a><span class="name">QCameraImageCaptureControl_iid</span></h3>
<p><code>org.qt-project.qt.cameraimagecapturecontrol/5.0</code></p>
<p>Defines the interface name of the <a href="qcameraimagecapturecontrol.html">QCameraImageCaptureControl</a> class.</p>
<!-- @@@QCameraImageCaptureControl_iid -->
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