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<h1 class="title">QVideoSurfaceFormat Class Reference</h1>
<!-- $$$QVideoSurfaceFormat-brief -->
<p>The QVideoSurfaceFormat class specifies the stream format of a video presentation surface. <a href="#details">More...</a></p>
<!-- @@@QVideoSurfaceFormat -->
<pre class="cpp"> <span class="preprocessor">#include &lt;QVideoSurfaceFormat&gt;</span></pre><p>This class was introduced in Qt 4.6.</p>
<ul>
<li><a href="qvideosurfaceformat-members.html">List of all members, including inherited members</a></li>
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<a name="public-types"></a>
<h2>Public Types</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#Direction-enum">Direction</a></b> { TopToBottom, BottomToTop }</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#YCbCrColorSpace-enum">YCbCrColorSpace</a></b> { YCbCr_Undefined, YCbCr_BT601, YCbCr_BT709, YCbCr_xvYCC601, YCbCr_xvYCC709, YCbCr_JPEG }</td></tr>
</table>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#QVideoSurfaceFormat">QVideoSurfaceFormat</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#QVideoSurfaceFormat-2">QVideoSurfaceFormat</a></b> ( const QSize &amp; <i>size</i>, QVideoFrame::PixelFormat <i>format</i>, QAbstractVideoBuffer::HandleType <i>type</i> = QAbstractVideoBuffer::NoHandle )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#QVideoSurfaceFormat-3">QVideoSurfaceFormat</a></b> ( const QVideoSurfaceFormat &amp; <i>other</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#dtor.QVideoSurfaceFormat">~QVideoSurfaceFormat</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#frameHeight">frameHeight</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> qreal </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#frameRate">frameRate</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QSize </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#frameSize">frameSize</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#frameWidth">frameWidth</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QAbstractVideoBuffer::HandleType </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#handleType">handleType</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#isValid">isValid</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QSize </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#pixelAspectRatio">pixelAspectRatio</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QVideoFrame::PixelFormat </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#pixelFormat">pixelFormat</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QVariant </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#property">property</a></b> ( const char * <i>name</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QList&lt;QByteArray&gt; </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#propertyNames">propertyNames</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Direction </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#scanLineDirection">scanLineDirection</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#setFrameRate">setFrameRate</a></b> ( qreal <i>rate</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#setFrameSize">setFrameSize</a></b> ( const QSize &amp; <i>size</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#setFrameSize-2">setFrameSize</a></b> ( int <i>width</i>, int <i>height</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#setPixelAspectRatio">setPixelAspectRatio</a></b> ( const QSize &amp; <i>ratio</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#setPixelAspectRatio-2">setPixelAspectRatio</a></b> ( int <i>horizontal</i>, int <i>vertical</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#setProperty">setProperty</a></b> ( const char * <i>name</i>, const QVariant &amp; <i>value</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#setScanLineDirection">setScanLineDirection</a></b> ( Direction <i>direction</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#setViewport">setViewport</a></b> ( const QRect &amp; <i>viewport</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#setYCbCrColorSpace">setYCbCrColorSpace</a></b> ( YCbCrColorSpace <i>space</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QSize </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#sizeHint">sizeHint</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QRect </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#viewport">viewport</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> YCbCrColorSpace </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#yCbCrColorSpace">yCbCrColorSpace</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#operator-not-eq">operator!=</a></b> ( const QVideoSurfaceFormat &amp; <i>other</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QVideoSurfaceFormat &amp; </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#operator-eq">operator=</a></b> ( const QVideoSurfaceFormat &amp; <i>other</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qvideosurfaceformat.html#operator-eq-eq">operator==</a></b> ( const QVideoSurfaceFormat &amp; <i>other</i> ) const</td></tr>
</table>
<a name="details"></a>
<!-- $$$QVideoSurfaceFormat-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QVideoSurfaceFormat class specifies the stream format of a video presentation surface.</p>
<p>A video surface presents a stream of video frames. The surface's format describes the type of the frames and determines how they should be presented.</p>
<p>The core properties of a video stream required to setup a video surface are the pixel format given by <a href="qvideosurfaceformat.html#pixelFormat">pixelFormat</a>(), and the frame dimensions given by <a href="qvideosurfaceformat.html#frameSize">frameSize</a>().</p>
<p>If the surface is to present frames using a frame's handle a surface format will also include a handle type which is given by the <a href="qvideosurfaceformat.html#handleType">handleType</a>() function.</p>
<p>The region of a frame that is actually displayed on a video surface is given by the <a href="qvideosurfaceformat.html#viewport">viewport</a>(). A stream may have a viewport less than the entire region of a frame to allow for videos smaller than the nearest optimal size of a video frame. For example the width of a frame may be extended so that the start of each scan line is eight byte aligned.</p>
<p>Other common properties are the <a href="qvideosurfaceformat.html#pixelAspectRatio">pixelAspectRatio</a>(), <a href="qvideosurfaceformat.html#scanLineDirection">scanLineDirection</a>(), and <a href="qvideosurfaceformat.html#frameRate">frameRate</a>(). Additionally a stream may have some additional type specific properties which are listed by the dynamicPropertyNames() function and can be accessed using the <a href="qvideosurfaceformat.html#property">property</a>(), and <a href="qvideosurfaceformat.html#setProperty">setProperty</a>() functions.</p>
</div>
<!-- @@@QVideoSurfaceFormat -->
<div class="types">
<h2>Member Type Documentation</h2>
<!-- $$$Direction$$$TopToBottom$$$BottomToTop -->
<h3 class="fn"><a name="Direction-enum"></a>enum QVideoSurfaceFormat::<span class="name">Direction</span></h3>
<p>Enumerates the layout direction of video scan lines.</p>
<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
<tr><td class="topAlign"><tt>QVideoSurfaceFormat::TopToBottom</tt></td><td class="topAlign"><tt>0</tt></td><td class="topAlign">Scan lines are arranged from the top of the frame to the bottom.</td></tr>
<tr><td class="topAlign"><tt>QVideoSurfaceFormat::BottomToTop</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">Scan lines are arranged from the bottom of the frame to the top.</td></tr>
</table>
<!-- @@@Direction -->
<!-- $$$YCbCrColorSpace$$$YCbCr_Undefined$$$YCbCr_BT601$$$YCbCr_BT709$$$YCbCr_xvYCC601$$$YCbCr_xvYCC709$$$YCbCr_JPEG -->
<h3 class="fn"><a name="YCbCrColorSpace-enum"></a>enum QVideoSurfaceFormat::<span class="name">YCbCrColorSpace</span></h3>
<p>Enumerates the Y'CbCr color space of video frames.</p>
<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"><tt>QVideoSurfaceFormat::YCbCr_Undefined</tt></td><td class="topAlign"><tt>0</tt></td><td class="topAlign">No color space is specified.</td></tr>
<tr><td class="topAlign"><tt>QVideoSurfaceFormat::YCbCr_BT601</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">A Y'CbCr color space defined by ITU-R recommendation BT.601 with Y value range from 16 to 235, and Cb/Cr range from 16 to 240. Used in standard definition video.</td></tr>
<tr><td class="topAlign"><tt>QVideoSurfaceFormat::YCbCr_BT709</tt></td><td class="topAlign"><tt>2</tt></td><td class="topAlign">A Y'CbCr color space defined by ITU-R BT.709 with the same values range as YCbCr_BT601. Used for HDTV.</td></tr>
<tr><td class="topAlign"><tt>QVideoSurfaceFormat::YCbCr_xvYCC601</tt></td><td class="topAlign"><tt>3</tt></td><td class="topAlign">The BT.601 color space with the value range extended to 0 to 255. It is backward compatibile with BT.601 and uses values outside BT.601 range to represent wider colors range.</td></tr>
<tr><td class="topAlign"><tt>QVideoSurfaceFormat::YCbCr_xvYCC709</tt></td><td class="topAlign"><tt>4</tt></td><td class="topAlign">The BT.709 color space with the value range extended to 0 to 255.</td></tr>
<tr><td class="topAlign"><tt>QVideoSurfaceFormat::YCbCr_JPEG</tt></td><td class="topAlign"><tt>5</tt></td><td class="topAlign">The full range Y'CbCr color space used in JPEG files.</td></tr>
</table>
<!-- @@@YCbCrColorSpace -->
</div>
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QVideoSurfaceFormat[overload1]$$$QVideoSurfaceFormat -->
<h3 class="fn"><a name="QVideoSurfaceFormat"></a>QVideoSurfaceFormat::<span class="name">QVideoSurfaceFormat</span> ()</h3>
<p>Constructs a null video stream format.</p>
<!-- @@@QVideoSurfaceFormat -->
<!-- $$$QVideoSurfaceFormat$$$QVideoSurfaceFormatconstQSize&QVideoFrame::PixelFormatQAbstractVideoBuffer::HandleType -->
<h3 class="fn"><a name="QVideoSurfaceFormat-2"></a>QVideoSurfaceFormat::<span class="name">QVideoSurfaceFormat</span> ( const <span class="type"><a href="qsize.html">QSize</a></span> &amp; <i>size</i>, <span class="type"><a href="qvideoframe.html#PixelFormat-enum">QVideoFrame::PixelFormat</a></span> <i>format</i>, <span class="type"><a href="qabstractvideobuffer.html#HandleType-enum">QAbstractVideoBuffer::HandleType</a></span> <i>type</i> = QAbstractVideoBuffer::NoHandle )</h3>
<p>Contructs a description of stream which receives stream of <i>type</i> buffers with given frame <i>size</i> and pixel <i>format</i>.</p>
<!-- @@@QVideoSurfaceFormat -->
<!-- $$$QVideoSurfaceFormat$$$QVideoSurfaceFormatconstQVideoSurfaceFormat& -->
<h3 class="fn"><a name="QVideoSurfaceFormat-3"></a>QVideoSurfaceFormat::<span class="name">QVideoSurfaceFormat</span> ( const <span class="type">QVideoSurfaceFormat</span> &amp; <i>other</i> )</h3>
<p>Constructs a copy of <i>other</i>.</p>
<!-- @@@QVideoSurfaceFormat -->
<!-- $$$~QVideoSurfaceFormat[overload1]$$$~QVideoSurfaceFormat -->
<h3 class="fn"><a name="dtor.QVideoSurfaceFormat"></a>QVideoSurfaceFormat::<span class="name">~QVideoSurfaceFormat</span> ()</h3>
<p>Destroys a video stream description.</p>
<!-- @@@~QVideoSurfaceFormat -->
<!-- $$$frameHeight[overload1]$$$frameHeight -->
<h3 class="fn"><a name="frameHeight"></a><span class="type">int</span> QVideoSurfaceFormat::<span class="name">frameHeight</span> () const</h3>
<p>Returns the height of frame in a video stream.</p>
<!-- @@@frameHeight -->
<!-- $$$frameRate[overload1]$$$frameRate -->
<h3 class="fn"><a name="frameRate"></a><span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> QVideoSurfaceFormat::<span class="name">frameRate</span> () const</h3>
<p>Returns the frame rate of a video stream in frames per second.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#setFrameRate">setFrameRate</a>().</p>
<!-- @@@frameRate -->
<!-- $$$frameSize[overload1]$$$frameSize -->
<h3 class="fn"><a name="frameSize"></a><span class="type"><a href="qsize.html">QSize</a></span> QVideoSurfaceFormat::<span class="name">frameSize</span> () const</h3>
<p>Returns the size of frames in a video stream.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#setFrameSize">setFrameSize</a>(), <a href="qvideosurfaceformat.html#frameWidth">frameWidth</a>(), and <a href="qvideosurfaceformat.html#frameHeight">frameHeight</a>().</p>
<!-- @@@frameSize -->
<!-- $$$frameWidth[overload1]$$$frameWidth -->
<h3 class="fn"><a name="frameWidth"></a><span class="type">int</span> QVideoSurfaceFormat::<span class="name">frameWidth</span> () const</h3>
<p>Returns the width of frames in a video stream.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#frameSize">frameSize</a>() and <a href="qvideosurfaceformat.html#frameHeight">frameHeight</a>().</p>
<!-- @@@frameWidth -->
<!-- $$$handleType[overload1]$$$handleType -->
<h3 class="fn"><a name="handleType"></a><span class="type"><a href="qabstractvideobuffer.html#HandleType-enum">QAbstractVideoBuffer::HandleType</a></span> QVideoSurfaceFormat::<span class="name">handleType</span> () const</h3>
<p>Returns the type of handle the surface uses to present the frame data.</p>
<p>If the handle type is <a href="qabstractvideobuffer.html#HandleType-enum">QAbstractVideoBuffer::NoHandle</a> buffers with any handle type are valid provided they can be <a href="qabstractvideobuffer.html#map">mapped</a> with the <a href="qabstractvideobuffer.html#MapMode-enum">QAbstractVideoBuffer::ReadOnly</a> flag. If the handleType() is not <a href="qabstractvideobuffer.html#HandleType-enum">QAbstractVideoBuffer::NoHandle</a> then the handle type of the buffer be the same as that of the surface format.</p>
<!-- @@@handleType -->
<!-- $$$isValid[overload1]$$$isValid -->
<h3 class="fn"><a name="isValid"></a><span class="type">bool</span> QVideoSurfaceFormat::<span class="name">isValid</span> () const</h3>
<p>Identifies if a video surface format has a valid pixel format and frame size.</p>
<p>Returns true if the format is valid, and false otherwise.</p>
<!-- @@@isValid -->
<!-- $$$pixelAspectRatio[overload1]$$$pixelAspectRatio -->
<h3 class="fn"><a name="pixelAspectRatio"></a><span class="type"><a href="qsize.html">QSize</a></span> QVideoSurfaceFormat::<span class="name">pixelAspectRatio</span> () const</h3>
<p>Returns a video stream's pixel aspect ratio.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#setPixelAspectRatio">setPixelAspectRatio</a>().</p>
<!-- @@@pixelAspectRatio -->
<!-- $$$pixelFormat[overload1]$$$pixelFormat -->
<h3 class="fn"><a name="pixelFormat"></a><span class="type"><a href="qvideoframe.html#PixelFormat-enum">QVideoFrame::PixelFormat</a></span> QVideoSurfaceFormat::<span class="name">pixelFormat</span> () const</h3>
<p>Returns the pixel format of frames in a video stream.</p>
<!-- @@@pixelFormat -->
<!-- $$$property[overload1]$$$propertyconstchar* -->
<h3 class="fn"><a name="property"></a><span class="type"><a href="qvariant.html">QVariant</a></span> QVideoSurfaceFormat::<span class="name">property</span> ( const <span class="type">char</span> * <i>name</i> ) const</h3>
<p>Returns the value of the video format's <i>name</i> property.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#setProperty">setProperty</a>().</p>
<!-- @@@property -->
<!-- $$$propertyNames[overload1]$$$propertyNames -->
<h3 class="fn"><a name="propertyNames"></a><span class="type"><a href="qlist.html">QList</a></span>&lt;<span class="type"><a href="qbytearray.html">QByteArray</a></span>&gt; QVideoSurfaceFormat::<span class="name">propertyNames</span> () const</h3>
<p>Returns a list of video format dynamic property names.</p>
<!-- @@@propertyNames -->
<!-- $$$scanLineDirection[overload1]$$$scanLineDirection -->
<h3 class="fn"><a name="scanLineDirection"></a><span class="type"><a href="qvideosurfaceformat.html#Direction-enum">Direction</a></span> QVideoSurfaceFormat::<span class="name">scanLineDirection</span> () const</h3>
<p>Returns the direction of scan lines.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#setScanLineDirection">setScanLineDirection</a>().</p>
<!-- @@@scanLineDirection -->
<!-- $$$setFrameRate[overload1]$$$setFrameRateqreal -->
<h3 class="fn"><a name="setFrameRate"></a><span class="type">void</span> QVideoSurfaceFormat::<span class="name">setFrameRate</span> ( <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <i>rate</i> )</h3>
<p>Sets the frame <i>rate</i> of a video stream in frames per second.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#frameRate">frameRate</a>().</p>
<!-- @@@setFrameRate -->
<!-- $$$setFrameSize[overload1]$$$setFrameSizeconstQSize& -->
<h3 class="fn"><a name="setFrameSize"></a><span class="type">void</span> QVideoSurfaceFormat::<span class="name">setFrameSize</span> ( const <span class="type"><a href="qsize.html">QSize</a></span> &amp; <i>size</i> )</h3>
<p>Sets the size of frames in a video stream to <i>size</i>.</p>
<p>This will reset the <a href="qvideosurfaceformat.html#viewport">viewport</a>() to fill the entire frame.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#frameSize">frameSize</a>().</p>
<!-- @@@setFrameSize -->
<!-- $$$setFrameSize$$$setFrameSizeintint -->
<h3 class="fn"><a name="setFrameSize-2"></a><span class="type">void</span> QVideoSurfaceFormat::<span class="name">setFrameSize</span> ( <span class="type">int</span> <i>width</i>, <span class="type">int</span> <i>height</i> )</h3>
<p>This is an overloaded function.</p>
<p>Sets the <i>width</i> and <i>height</i> of frames in a video stream.</p>
<p>This will reset the <a href="qvideosurfaceformat.html#viewport">viewport</a>() to fill the entire frame.</p>
<!-- @@@setFrameSize -->
<!-- $$$setPixelAspectRatio[overload1]$$$setPixelAspectRatioconstQSize& -->
<h3 class="fn"><a name="setPixelAspectRatio"></a><span class="type">void</span> QVideoSurfaceFormat::<span class="name">setPixelAspectRatio</span> ( const <span class="type"><a href="qsize.html">QSize</a></span> &amp; <i>ratio</i> )</h3>
<p>Sets a video stream's pixel aspect <i>ratio</i>.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#pixelAspectRatio">pixelAspectRatio</a>().</p>
<!-- @@@setPixelAspectRatio -->
<!-- $$$setPixelAspectRatio$$$setPixelAspectRatiointint -->
<h3 class="fn"><a name="setPixelAspectRatio-2"></a><span class="type">void</span> QVideoSurfaceFormat::<span class="name">setPixelAspectRatio</span> ( <span class="type">int</span> <i>horizontal</i>, <span class="type">int</span> <i>vertical</i> )</h3>
<p>This is an overloaded function.</p>
<p>Sets the <i>horizontal</i> and <i>vertical</i> elements of a video stream's pixel aspect ratio.</p>
<!-- @@@setPixelAspectRatio -->
<!-- $$$setProperty[overload1]$$$setPropertyconstchar*constQVariant& -->
<h3 class="fn"><a name="setProperty"></a><span class="type">void</span> QVideoSurfaceFormat::<span class="name">setProperty</span> ( const <span class="type">char</span> * <i>name</i>, const <span class="type"><a href="qvariant.html">QVariant</a></span> &amp; <i>value</i> )</h3>
<p>Sets the video format's <i>name</i> property to <i>value</i>.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#property">property</a>().</p>
<!-- @@@setProperty -->
<!-- $$$setScanLineDirection[overload1]$$$setScanLineDirectionDirection -->
<h3 class="fn"><a name="setScanLineDirection"></a><span class="type">void</span> QVideoSurfaceFormat::<span class="name">setScanLineDirection</span> ( <span class="type"><a href="qvideosurfaceformat.html#Direction-enum">Direction</a></span> <i>direction</i> )</h3>
<p>Sets the <i>direction</i> of scan lines.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#scanLineDirection">scanLineDirection</a>().</p>
<!-- @@@setScanLineDirection -->
<!-- $$$setViewport[overload1]$$$setViewportconstQRect& -->
<h3 class="fn"><a name="setViewport"></a><span class="type">void</span> QVideoSurfaceFormat::<span class="name">setViewport</span> ( const <span class="type"><a href="qrect.html">QRect</a></span> &amp; <i>viewport</i> )</h3>
<p>Sets the viewport of a video stream to <i>viewport</i>.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#viewport">viewport</a>().</p>
<!-- @@@setViewport -->
<!-- $$$setYCbCrColorSpace[overload1]$$$setYCbCrColorSpaceYCbCrColorSpace -->
<h3 class="fn"><a name="setYCbCrColorSpace"></a><span class="type">void</span> QVideoSurfaceFormat::<span class="name">setYCbCrColorSpace</span> ( <span class="type"><a href="qvideosurfaceformat.html#YCbCrColorSpace-enum">YCbCrColorSpace</a></span> <i>space</i> )</h3>
<p>Sets the Y'CbCr color <i>space</i> of a video stream. It is only used with raw YUV frame types.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#yCbCrColorSpace">yCbCrColorSpace</a>().</p>
<!-- @@@setYCbCrColorSpace -->
<!-- $$$sizeHint[overload1]$$$sizeHint -->
<h3 class="fn"><a name="sizeHint"></a><span class="type"><a href="qsize.html">QSize</a></span> QVideoSurfaceFormat::<span class="name">sizeHint</span> () const</h3>
<p>Returns a suggested size in pixels for the video stream.</p>
<p>This is the size of the viewport scaled according to the pixel aspect ratio.</p>
<!-- @@@sizeHint -->
<!-- $$$viewport[overload1]$$$viewport -->
<h3 class="fn"><a name="viewport"></a><span class="type"><a href="qrect.html">QRect</a></span> QVideoSurfaceFormat::<span class="name">viewport</span> () const</h3>
<p>Returns the viewport of a video stream.</p>
<p>The viewport is the region of a video frame that is actually displayed.</p>
<p>By default the viewport covers an entire frame.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#setViewport">setViewport</a>().</p>
<!-- @@@viewport -->
<!-- $$$yCbCrColorSpace[overload1]$$$yCbCrColorSpace -->
<h3 class="fn"><a name="yCbCrColorSpace"></a><span class="type"><a href="qvideosurfaceformat.html#YCbCrColorSpace-enum">YCbCrColorSpace</a></span> QVideoSurfaceFormat::<span class="name">yCbCrColorSpace</span> () const</h3>
<p>Returns the Y'CbCr color space of a video stream.</p>
<p><b>See also </b><a href="qvideosurfaceformat.html#setYCbCrColorSpace">setYCbCrColorSpace</a>().</p>
<!-- @@@yCbCrColorSpace -->
<!-- $$$operator!=[overload1]$$$operator!=constQVideoSurfaceFormat& -->
<h3 class="fn"><a name="operator-not-eq"></a><span class="type">bool</span> QVideoSurfaceFormat::<span class="name">operator!=</span> ( const <span class="type">QVideoSurfaceFormat</span> &amp; <i>other</i> ) const</h3>
<p>Returns true if <i>other</i> is different to a video format, and false if they are the same.</p>
<!-- @@@operator!= -->
<!-- $$$operator=[overload1]$$$operator=constQVideoSurfaceFormat& -->
<h3 class="fn"><a name="operator-eq"></a><span class="type">QVideoSurfaceFormat</span> &amp; QVideoSurfaceFormat::<span class="name">operator=</span> ( const <span class="type">QVideoSurfaceFormat</span> &amp; <i>other</i> )</h3>
<p>Assigns the values of <i>other</i> to a video stream description.</p>
<!-- @@@operator= -->
<!-- $$$operator==[overload1]$$$operator==constQVideoSurfaceFormat& -->
<h3 class="fn"><a name="operator-eq-eq"></a><span class="type">bool</span> QVideoSurfaceFormat::<span class="name">operator==</span> ( const <span class="type">QVideoSurfaceFormat</span> &amp; <i>other</i> ) const</h3>
<p>Returns true if <i>other</i> is the same as a video format, and false if they are the different.</p>
<!-- @@@operator== -->
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