<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>imagefree</title> <link rel="stylesheet" type="text/css" href="csound.css" /> <link rel="stylesheet" type="text/css" href="syntax-highlighting.css" /> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /> <link rel="home" href="index.html" title="The Canonical Csound Reference Manual" /> <link rel="up" href="OpcodesTop.html" title="Orchestra Opcodes and Operators" /> <link rel="prev" href="imagecreate.html" title="imagecreate" /> <link rel="next" href="imagegetpixel.html" title="imagegetpixel" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">imagefree</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="imagecreate.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="imagegetpixel.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry"> <a id="imagefree"></a> <div class="titlepage"></div> <a id="IndexImagefree" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">imagefree</span> </h2> <p>imagecreate — Frees memory allocated for a previously loaded or created image. </p> </div> <div class="refsect1"> <a id="idm281472924382072"></a> <h2>Description</h2> <p> Frees memory allocated for a previously loaded or created image. </p> </div> <div class="refsect1"> <a id="idm281472924320744"></a> <h2>Syntax</h2> <pre class="synopsis"><span class="command"><strong>imagefree</strong></span> iimagenum</pre> </div> <div class="refsect1"> <a id="idm281472924318664"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>iimagenum</em></span> -- reference of the image to free. </p> </div> <div class="refsect1"> <a id="idm281472924316936"></a> <h2>Examples</h2> <p> Here is an example of the imagefree opcode. It uses the file <a class="ulink" href="examples/imageopcodes.csd" target="_top"><em class="citetitle">imageopcodes.csd</em></a>. </p> <div class="example"> <a id="idm281472924315144"></a> <p class="title"> <strong>Example 421. Example of the imagefree opcode.</strong> </p> <div class="example-contents"> <div class="refsect1"> <a id="idm281472752184920"></a> <pre class="programlisting"> <span class="nt"><CsoundSynthesizer></span> <span class="nt"><CsOptions></span> <span class="c1">; Select audio/midi flags here according to platform</span> -n <span class="c1">;no sound output</span> <span class="nt"></CsOptions></span> <span class="nt"><CsInstruments></span> <span class="vg">sr</span><span class="o">=</span><span class="mi">48000</span> <span class="vg">ksmps</span><span class="o">=</span><span class="mi">1</span> <span class="vg">nchnls</span><span class="o">=</span><span class="mi">2</span> <span class="c1">; this test .csd copies image.png into a new file 'imageout.png'</span> gi<span class="n">image1</span> <span class="nb">imageload</span> <span class="s">"image.png"</span> gi<span class="n">imagew</span><span class="p">,</span> gi<span class="n">imageh</span> <span class="nb">imagesize</span> gi<span class="n">image1</span> gi<span class="n">image2</span> <span class="nb">imagecreate</span> gi<span class="n">imagew</span><span class="p">,</span>gi<span class="n">imageh</span> <span class="kd">instr</span> <span class="nf">1</span> k<span class="n">ndx</span> <span class="o">=</span> <span class="mi">0</span> k<span class="n">x_</span> <span class="nb">linseg</span> <span class="mi">0</span><span class="p">,</span> <span class="nb">p3</span><span class="p">,</span> <span class="mi">1</span> <span class="c1">;print imagewidth and imageheigth of image.png</span> <span class="nb">prints</span> <span class="s">"imagewidth = %f pixels, imageheigth = %f pixels</span><span class="se">\\</span><span class="s">n"</span><span class="p">,</span> gi<span class="n">imagew</span><span class="p">,</span> gi<span class="n">imageh</span> <span class="nl">myloop</span><span class="p">:</span> k<span class="n">y_</span> <span class="o">=</span> k<span class="n">ndx</span><span class="o">/</span><span class="p">(</span>gi<span class="n">imageh</span><span class="p">)</span> k<span class="n">r_</span><span class="p">,</span> k<span class="n">g_</span><span class="p">,</span> k<span class="n">b_</span> <span class="nb">imagegetpixel</span> gi<span class="n">image1</span><span class="p">,</span> k<span class="n">x_</span><span class="p">,</span> k<span class="n">y_</span> <span class="nb">imagesetpixel</span> gi<span class="n">image2</span><span class="p">,</span> k<span class="n">x_</span><span class="p">,</span> k<span class="n">y_</span><span class="p">,</span> k<span class="n">r_</span><span class="p">,</span> k<span class="n">g_</span><span class="p">,</span> k<span class="n">b_</span> <span class="k">loop_lt</span> k<span class="n">ndx</span><span class="p">,</span> <span class="mf">0.5</span><span class="p">,</span> gi<span class="n">imageh</span><span class="p">,</span> <span class="nl">myloop</span> <span class="kd">endin</span> <span class="kd">instr</span> <span class="nf">2</span> <span class="nb">imagesave</span> gi<span class="n">image2</span><span class="p">,</span> <span class="s">"imageout.png"</span> <span class="kd">endin</span> <span class="kd">instr</span> <span class="nf">3</span> <span class="nb">imagefree</span> gi<span class="n">image1</span> <span class="nb">imagefree</span> gi<span class="n">image2</span> <span class="kd">endin</span> <span class="nt"></CsInstruments></span> <span class="nt"><CsScore></span> <span class="nb">i</span><span class="mi">1</span> <span class="mi">1</span> <span class="mi">1</span> <span class="nb">i</span><span class="mi">2</span> <span class="mi">2</span> <span class="mi">1</span> <span class="nb">i</span><span class="mi">3</span> <span class="mi">3</span> <span class="mi">1</span> <span class="nb">e</span> <span class="nt"></CsScore></span> <span class="nt"></CsoundSynthesizer></span> </pre> </div> </div> </div> <p><br class="example-break" /> </p> </div> <div class="refsect1"> <a id="idm281472924313288"></a> <h2>See Also</h2> <p> <a class="link" href="imageload.html" title="imageload"><em class="citetitle">imageload</em></a>, <a class="link" href="imagecreate.html" title="imagecreate"><em class="citetitle">imagecreate</em></a>, <a class="link" href="imagesize.html" title="imagesize"><em class="citetitle">imagesize</em></a>, <a class="link" href="imagesave.html" title="imagesave"><em class="citetitle">imagesave</em></a>, <a class="link" href="imagegetpixel.html" title="imagegetpixel"><em class="citetitle">imagegetpixel</em></a>, <a class="link" href="imagesetpixel.html" title="imagesetpixel"><em class="citetitle">imagesetpixel</em></a> </p> </div> <div class="refsect1"> <a id="idm281472924306328"></a> <h2>Credits</h2> <p> </p> <table border="0" summary="Simple list" class="simplelist"> <tr> <td>Author: Cesare Marilungo</td> </tr> </table> <p> </p> <p>New in version 5.08</p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation 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