kc3-lang/libjpeg-turbo/java/doc/org/libjpegturbo/turbojpeg/TJTransformer.html
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Date : 2024-09-14T11:56:14
TJ: Add func/method for computing xformed buf size
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java/doc/org/libjpegturbo/turbojpeg/TJTransformer.html
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<!DOCTYPE HTML> <!-- NewPage --> <html lang="en"> <head> <!-- Generated by javadoc --> <title>TJTransformer</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link rel="stylesheet" type="text/css" href="../../../stylesheet.css" title="Style"> <link rel="stylesheet" type="text/css" href="../../../jquery/jquery-ui.min.css" title="Style"> <link rel="stylesheet" type="text/css" href="../../../jquery-ui.overrides.css" title="Style"> <script type="text/javascript" src="../../../script.js"></script> <script type="text/javascript" src="../../../jquery/jszip/dist/jszip.min.js"></script> <script type="text/javascript" src="../../../jquery/jszip-utils/dist/jszip-utils.min.js"></script> <!--[if IE]> <script type="text/javascript" src="../../../jquery/jszip-utils/dist/jszip-utils-ie.min.js"></script> <![endif]--> <script type="text/javascript" src="../../../jquery/jquery-3.6.1.min.js"></script> <script type="text/javascript" src="../../../jquery/jquery-ui.min.js"></script> </head> <body> <script type="text/javascript"><!-- try { if (location.href.indexOf('is-external=true') == -1) { parent.document.title="TJTransformer"; } } catch(err) { } //--> var data = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10}; var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],8:["t4","Concrete Methods"]}; var altColor = "altColor"; var rowColor = "rowColor"; var tableTab = "tableTab"; var activeTableTab = "activeTableTab"; var pathtoroot = "../../../"; var useModuleDirectories = true; loadScripts(document, 'script');</script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript> <header role="banner"> <nav role="navigation"> <div class="fixedNav"> <!-- ========= START OF TOP NAVBAR ======= --> <div class="topNav"><a id="navbar.top"> <!-- --> </a> <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> <a id="navbar.top.firstrow"> <!-- --> </a> <ul class="navList" title="Navigation"> <li><a 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<li>Summary: </li> <li>Nested | </li> <li>Field | </li> <li><a href="#constructor.summary">Constr</a> | </li> <li><a href="#method.summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li>Field | </li> <li><a href="#constructor.detail">Constr</a> | </li> <li><a href="#method.detail">Method</a></li> </ul> </div> <a id="skip.navbar.top"> <!-- --> </a></div> <!-- ========= END OF TOP NAVBAR ========= --> </div> <div class="navPadding"> </div> <script type="text/javascript"><!-- $('.navPadding').css('padding-top', $('.fixedNav').css("height")); //--> </script> </nav> </header> <!-- ======== START OF CLASS DATA ======== --> <main role="main"> <div class="header"> <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.libjpegturbo.turbojpeg</a></div> <h2 title="Class TJTransformer" class="title">Class TJTransformer</h2> </div> <div class="contentContainer"> <ul class="inheritance"> <li>java.lang.Object</li> <li> <ul class="inheritance"> <li><a href="TJDecompressor.html" title="class in org.libjpegturbo.turbojpeg">org.libjpegturbo.turbojpeg.TJDecompressor</a></li> <li> <ul class="inheritance"> <li>org.libjpegturbo.turbojpeg.TJTransformer</li> </ul> </li> </ul> </li> </ul> <div class="description"> <ul class="blockList"> <li class="blockList"> <dl> <dt>All Implemented Interfaces:</dt> <dd><code>java.io.Closeable</code>, <code>java.lang.AutoCloseable</code></dd> </dl> <hr> <pre>public class <span class="typeNameLabel">TJTransformer</span> extends <a href="TJDecompressor.html" title="class in org.libjpegturbo.turbojpeg">TJDecompressor</a></pre> <div class="block">TurboJPEG lossless transformer</div> </li> </ul> </div> <div class="summary"> <ul class="blockList"> <li class="blockList"> <!-- ======== CONSTRUCTOR SUMMARY ======== --> <section> <ul class="blockList"> <li class="blockList"><a id="constructor.summary"> <!-- --> </a> <h3>Constructor Summary</h3> <table class="memberSummary"> <caption><span>Constructors</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Constructor</th> <th class="colLast" scope="col">Description</th> </tr> <tr class="altColor"> <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">TJTransformer</a></span>()</code></th> <td class="colLast"> <div class="block">Create a TurboJPEG lossless transformer instance.</div> </td> </tr> <tr class="rowColor"> <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(byte%5B%5D)">TJTransformer</a></span>​(byte[] jpegImage)</code></th> <td class="colLast"> <div class="block">Create a TurboJPEG lossless transformer instance and associate the JPEG source image stored in <code>jpegImage</code> with the newly created instance.</div> </td> </tr> <tr class="altColor"> <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(byte%5B%5D,int)">TJTransformer</a></span>​(byte[] jpegImage, int imageSize)</code></th> <td class="colLast"> <div class="block">Create a TurboJPEG lossless transformer instance and associate the JPEG source image of length <code>imageSize</code> bytes stored in <code>jpegImage</code> with the newly created instance.</div> </td> </tr> </table> </li> </ul> </section> <!-- ========== METHOD SUMMARY =========== --> <section> <ul class="blockList"> <li class="blockList"><a id="method.summary"> <!-- --> </a> <h3>Method Summary</h3> <table class="memberSummary"> <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colSecond" scope="col">Method</th> <th class="colLast" scope="col">Description</th> </tr> <tr id="i0" class="altColor"> <td class="colFirst"><code>int</code></td> <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#bufSize(org.libjpegturbo.turbojpeg.TJTransform)">bufSize</a></span>​(<a href="TJTransform.html" title="class in org.libjpegturbo.turbojpeg">TJTransform</a> transform)</code></th> <td class="colLast"> <div class="block">Returns the maximum size of the buffer (in bytes) required to hold a JPEG image transformed, with the given transform parameters and/or cropping region, from the JPEG source image associated with this transformer instance.</div> </td> </tr> <tr id="i1" class="rowColor"> <td class="colFirst"><code>int[]</code></td> <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTransformedSizes()">getTransformedSizes</a></span>()</code></th> <td class="colLast"> <div class="block">Returns an array containing the sizes of the transformed JPEG images (in bytes) generated by the most recent transform operation.</div> </td> </tr> <tr id="i2" class="altColor"> <td class="colFirst"><code>void</code></td> <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setICCProfile(byte%5B%5D)">setICCProfile</a></span>​(byte[] iccBuf)</code></th> <td class="colLast"> <div class="block">Embed an ICC (International Color Consortium) color management profile in JPEG images generated by subsequent transform operations.</div> </td> </tr> <tr id="i3" class="rowColor"> <td class="colFirst"><code>void</code></td> <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#transform(byte%5B%5D%5B%5D,org.libjpegturbo.turbojpeg.TJTransform%5B%5D)">transform</a></span>​(byte[][] dstBufs, <a href="TJTransform.html" title="class in org.libjpegturbo.turbojpeg">TJTransform</a>[] transforms)</code></th> <td class="colLast"> <div class="block">Losslessly transform the JPEG source image associated with this transformer instance into one or more JPEG images stored in the given destination buffers.</div> </td> </tr> <tr id="i4" class="altColor"> <td class="colFirst"><code><a href="TJDecompressor.html" title="class in org.libjpegturbo.turbojpeg">TJDecompressor</a>[]</code></td> <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#transform(org.libjpegturbo.turbojpeg.TJTransform%5B%5D)">transform</a></span>​(<a href="TJTransform.html" title="class in org.libjpegturbo.turbojpeg">TJTransform</a>[] transforms)</code></th> <td class="colLast"> <div class="block">Losslessly transform the JPEG source image associated with this transformer instance and return an array of <a href="TJDecompressor.html" title="class in org.libjpegturbo.turbojpeg"><code>TJDecompressor</code></a> instances, each of which has a transformed JPEG image associated with it.</div> </td> </tr> </table> <ul class="blockList"> <li class="blockList"><a id="methods.inherited.from.class.org.libjpegturbo.turbojpeg.TJDecompressor"> <!-- --> </a> <h3>Methods inherited from class org.libjpegturbo.turbojpeg.<a href="TJDecompressor.html" title="class in org.libjpegturbo.turbojpeg">TJDecompressor</a></h3> <code><a href="TJDecompressor.html#close()">close</a>, <a href="TJDecompressor.html#decompress12(int,int)">decompress12</a>, <a href="TJDecompressor.html#decompress12(short%5B%5D,int,int,int,int)">decompress12</a>, <a href="TJDecompressor.html#decompress16(int,int)">decompress16</a>, <a href="TJDecompressor.html#decompress16(short%5B%5D,int,int,int,int)">decompress16</a>, <a href="TJDecompressor.html#decompress8(byte%5B%5D,int,int,int,int)">decompress8</a>, <a href="TJDecompressor.html#decompress8(int)">decompress8</a>, <a href="TJDecompressor.html#decompress8(int%5B%5D,int,int,int,int)">decompress8</a>, <a href="TJDecompressor.html#decompress8(int,int)">decompress8</a>, <a href="TJDecompressor.html#decompress8(java.awt.image.BufferedImage)">decompress8</a>, <a href="TJDecompressor.html#decompressToYUV(int)">decompressToYUV</a>, <a href="TJDecompressor.html#decompressToYUV(int%5B%5D)">decompressToYUV</a>, <a href="TJDecompressor.html#decompressToYUV(org.libjpegturbo.turbojpeg.YUVImage)">decompressToYUV</a>, <a href="TJDecompressor.html#finalize()">finalize</a>, <a href="TJDecompressor.html#get(int)">get</a>, <a href="TJDecompressor.html#getHeight()">getHeight</a>, <a href="TJDecompressor.html#getICCProfile()">getICCProfile</a>, <a href="TJDecompressor.html#getICCSize()">getICCSize</a>, <a href="TJDecompressor.html#getJPEGBuf()">getJPEGBuf</a>, <a href="TJDecompressor.html#getJPEGSize()">getJPEGSize</a>, <a href="TJDecompressor.html#getWidth()">getWidth</a>, <a href="TJDecompressor.html#saveImage(java.lang.String,java.lang.Object,int,int,int,int,int,int)">saveImage</a>, <a href="TJDecompressor.html#set(int,int)">set</a>, <a href="TJDecompressor.html#setCroppingRegion(java.awt.Rectangle)">setCroppingRegion</a>, <a href="TJDecompressor.html#setScalingFactor(org.libjpegturbo.turbojpeg.TJScalingFactor)">setScalingFactor</a>, <a href="TJDecompressor.html#setSourceImage(byte%5B%5D,int)">setSourceImage</a>, <a href="TJDecompressor.html#setSourceImage(org.libjpegturbo.turbojpeg.YUVImage)">setSourceImage</a></code></li> </ul> <ul class="blockList"> <li class="blockList"><a id="methods.inherited.from.class.java.lang.Object"> <!-- --> </a> <h3>Methods inherited from class java.lang.Object</h3> <code>clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> </ul> </li> </ul> </section> </li> </ul> </div> <div class="details"> <ul class="blockList"> <li class="blockList"> <!-- ========= CONSTRUCTOR DETAIL ======== --> <section> <ul class="blockList"> <li class="blockList"><a id="constructor.detail"> <!-- --> </a> <h3>Constructor Detail</h3> <a id="<init>()"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>TJTransformer</h4> <pre>public TJTransformer() throws <a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></pre> <div class="block">Create a TurboJPEG lossless transformer instance.</div> <dl> <dt><span class="throwsLabel">Throws:</span></dt> <dd><code><a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></code></dd> </dl> </li> </ul> <a id="<init>(byte[])"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>TJTransformer</h4> <pre>public TJTransformer​(byte[] jpegImage) throws <a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></pre> <div class="block">Create a TurboJPEG lossless transformer instance and associate the JPEG source image stored in <code>jpegImage</code> with the newly created instance.</div> <dl> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>jpegImage</code> - buffer containing the JPEG source image to transform. (The size of the JPEG image is assumed to be the length of the array.) This buffer is not modified.</dd> <dt><span class="throwsLabel">Throws:</span></dt> <dd><code><a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></code></dd> </dl> </li> </ul> <a id="<init>(byte[],int)"> <!-- --> </a> <ul class="blockListLast"> <li class="blockList"> <h4>TJTransformer</h4> <pre>public TJTransformer​(byte[] jpegImage, int imageSize) throws <a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></pre> <div class="block">Create a TurboJPEG lossless transformer instance and associate the JPEG source image of length <code>imageSize</code> bytes stored in <code>jpegImage</code> with the newly created instance.</div> <dl> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>jpegImage</code> - buffer containing the JPEG source image to transform. This buffer is not modified.</dd> <dd><code>imageSize</code> - size of the JPEG source image (in bytes)</dd> <dt><span class="throwsLabel">Throws:</span></dt> <dd><code><a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></code></dd> </dl> </li> </ul> </li> </ul> </section> <!-- ============ METHOD DETAIL ========== --> <section> <ul class="blockList"> <li class="blockList"><a id="method.detail"> <!-- --> </a> <h3>Method Detail</h3> <a id="setICCProfile(byte[])"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>setICCProfile</h4> <pre class="methodSignature">public void setICCProfile​(byte[] iccBuf) throws <a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></pre> <div class="block">Embed an ICC (International Color Consortium) color management profile in JPEG images generated by subsequent transform operations.</div> <dl> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>iccBuf</code> - buffer containing an ICC profile. (The size of the ICC profile is assumed to be the length of the array.) A copy is made of the ICC profile, so this buffer can be reused as soon as this method returns. Setting this parameter to null removes any ICC profile that was previously associated with this transformer instance.</dd> <dt><span class="throwsLabel">Throws:</span></dt> <dd><code><a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></code></dd> </dl> </li> </ul> <a id="bufSize(org.libjpegturbo.turbojpeg.TJTransform)"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>bufSize</h4> <pre class="methodSignature">public int bufSize​(<a href="TJTransform.html" title="class in org.libjpegturbo.turbojpeg">TJTransform</a> transform) throws <a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></pre> <div class="block">Returns the maximum size of the buffer (in bytes) required to hold a JPEG image transformed, with the given transform parameters and/or cropping region, from the JPEG source image associated with this transformer instance. This function is a wrapper for <a href="TJ.html#bufSize(int,int,int)"><code>TJ.bufSize()</code></a> that takes into account cropping, transposition of the width and height (which affects the destination image dimensions and level of chrominance subsampling), grayscale conversion, and the ICC profile (if any) that was previously associated with this transformer instance (see <a href="#setICCProfile(byte%5B%5D)"><code>setICCProfile()</code></a>) or extracted from the source image (see <a href="TJDecompressor.html#getICCProfile()"><code>TJDecompressor.getICCProfile()</code></a> and <a href="TJ.html#PARAM_SAVEMARKERS"><code>TJ.PARAM_SAVEMARKERS</code></a>.)</div> <dl> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>transform</code> - a <a href="TJTransform.html" title="class in org.libjpegturbo.turbojpeg"><code>TJTransform</code></a> instance that specifies the transform parameters and/or cropping region for the transformed JPEG image.</dd> <dt><span class="returnLabel">Returns:</span></dt> <dd>the maximum size of the buffer (in bytes) required to hold a JPEG image transformed, with the given transform parameters and/or cropping region, from the JPEG source image associated with this transformer instance</dd> <dt><span class="throwsLabel">Throws:</span></dt> <dd><code><a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></code></dd> </dl> </li> </ul> <a id="transform(byte[][],org.libjpegturbo.turbojpeg.TJTransform[])"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>transform</h4> <pre class="methodSignature">public void transform​(byte[][] dstBufs, <a href="TJTransform.html" title="class in org.libjpegturbo.turbojpeg">TJTransform</a>[] transforms) throws <a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></pre> <div class="block">Losslessly transform the JPEG source image associated with this transformer instance into one or more JPEG images stored in the given destination buffers. Lossless transforms work by moving the raw coefficients from one JPEG image structure to another without altering the values of the coefficients. While this is typically faster than decompressing the image, transforming it, and re-compressing it, lossless transforms are not free. Each lossless transform requires reading and performing Huffman decoding on all of the coefficients in the source image, regardless of the size of the destination image. Thus, this method provides a means of generating multiple transformed images from the same source or of applying multiple transformations simultaneously, in order to eliminate the need to read the source coefficients multiple times.</div> <dl> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>dstBufs</code> - an array of JPEG destination buffers. <code>dstbufs[i]</code> will receive a JPEG image that has been transformed using the parameters in <code>transforms[i]</code>. Use <a href="#bufSize(org.libjpegturbo.turbojpeg.TJTransform)"><code>bufSize()</code></a> to determine the maximum size for each buffer.</dd> <dd><code>transforms</code> - an array of <a href="TJTransform.html" title="class in org.libjpegturbo.turbojpeg"><code>TJTransform</code></a> instances, each of which specifies the transform parameters and/or cropping region for the corresponding transformed JPEG image</dd> <dt><span class="throwsLabel">Throws:</span></dt> <dd><code><a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></code></dd> </dl> </li> </ul> <a id="transform(org.libjpegturbo.turbojpeg.TJTransform[])"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>transform</h4> <pre class="methodSignature">public <a href="TJDecompressor.html" title="class in org.libjpegturbo.turbojpeg">TJDecompressor</a>[] transform​(<a href="TJTransform.html" title="class in org.libjpegturbo.turbojpeg">TJTransform</a>[] transforms) throws <a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></pre> <div class="block">Losslessly transform the JPEG source image associated with this transformer instance and return an array of <a href="TJDecompressor.html" title="class in org.libjpegturbo.turbojpeg"><code>TJDecompressor</code></a> instances, each of which has a transformed JPEG image associated with it.</div> <dl> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>transforms</code> - an array of <a href="TJTransform.html" title="class in org.libjpegturbo.turbojpeg"><code>TJTransform</code></a> instances, each of which specifies the transform parameters and/or cropping region for the corresponding transformed JPEG image</dd> <dt><span class="returnLabel">Returns:</span></dt> <dd>an array of <a href="TJDecompressor.html" title="class in org.libjpegturbo.turbojpeg"><code>TJDecompressor</code></a> instances, each of which has a transformed JPEG image associated with it.</dd> <dt><span class="throwsLabel">Throws:</span></dt> <dd><code><a href="TJException.html" title="class in org.libjpegturbo.turbojpeg">TJException</a></code></dd> </dl> </li> </ul> <a id="getTransformedSizes()"> <!-- --> </a> <ul class="blockListLast"> <li class="blockList"> <h4>getTransformedSizes</h4> <pre class="methodSignature">public int[] getTransformedSizes()</pre> <div class="block">Returns an array containing the sizes of the transformed JPEG images (in bytes) generated by the most recent transform operation.</div> <dl> <dt><span class="returnLabel">Returns:</span></dt> <dd>an array containing the sizes of the transformed JPEG images (in bytes) generated by the most recent transform operation.</dd> </dl> </li> </ul> </li> </ul> </section> </li> </ul> </div> </div> </main> <!-- ========= END OF CLASS DATA ========= --> <footer role="contentinfo"> <nav role="navigation"> <!-- ======= START OF BOTTOM NAVBAR ====== --> <div class="bottomNav"><a id="navbar.bottom"> <!-- --> </a> <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> <a id="navbar.bottom.firstrow"> <!-- --> </a> <ul class="navList" title="Navigation"> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../index-all.html">Index</a></li> <li><a href="../../../help-doc.html">Help</a></li> </ul> </div> <div class="subNav"> <ul class="navList" id="allclasses_navbar_bottom"> <li><a href="../../../allclasses.html">All Classes</a></li> </ul> <div> <script type="text/javascript"><!-- allClassesLink = document.getElementById("allclasses_navbar_bottom"); if(window==top) { allClassesLink.style.display = "block"; } else { allClassesLink.style.display = "none"; } //--> </script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript> </div> <div> <ul class="subNavList"> <li>Summary: </li> <li>Nested | </li> <li>Field | </li> <li><a href="#constructor.summary">Constr</a> | </li> <li><a href="#method.summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li>Field | </li> <li><a href="#constructor.detail">Constr</a> | </li> <li><a href="#method.detail">Method</a></li> </ul> </div> <a id="skip.navbar.bottom"> <!-- --> </a></div> <!-- ======== END OF BOTTOM NAVBAR ======= --> </nav> </footer> </body> </html>