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\r
-<p class="navigation-index"></p>
+<h1>MagickWand C API</h1>
+<div class="doc-section">
<p>The <a href="../www/api/MagickWand/index.html">MagickWand API</a> is the recommended interface between the C programming language and the ImageMagick image processing libraries. Unlike the <a href="../www/magick-core.html">MagickCore</a> C API, MagickWand uses only a few opaque types. Accessors are available to set or get important wand properties. A description of the MagickWand public methods are found here:</p>
<ul>
<li><a href="../www/api/wand-view.html">Wand View Methods</a></li>
<li><a href="../www/api/magick-deprecate.html">Deprecated Methods</a></li>
<li><a href="../www/exception.html">Error and Warning Codes</a></li>
-</li>
</ul>
<p>After you write your MagickWand program, compile it like this:</p>
<p>Here is a example program that utilizes the MagickWand API to get you started, <a href="../www/source/wand.c">wand.c</a>. It reads an image, creates a thumbnail, and writes the result to disk.</p>
<div class="viewport">
-<pre class="code">
#include <stdio.h>
#include <stdlib.h>
#include <wand/MagickWand.h>
severity; \
\
description=MagickGetException(wand,&severity); \
- (void) fprintf(stderr,"%s %s %u %s\n",GetMagickModule(),description); \
+ (void) fprintf(stderr,"%s %s %lu %s\n",GetMagickModule(),description); \
description=(char *) MagickRelinquishMemory(description); \
exit(-1); \
}
MagickWandTerminus();
return(0);
}
-</pre>
</div>
<p>Here is another program that shows one way to get and set image pixels with the MagickWand API, <a href="../www/source/contrast.c">contrast.c</a>. It reads an image, applies sigmoidal non-linearity contrast control, and writes the result to disk.</p>
<div class="viewport">
-<pre class="code">
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
MagickWandTerminus();
return(0);
}
-</pre>
</div>
-<p><a
name="wand-view"></a>Now lets perform the same contrast enhancement while taking advantage of our dual or quad-core processing system by running the algorithm in parallel utilizing wand views. The <a href="../www/source/wand/sigmoidal-contrast.c">sigmoidal-contrast.c</a> module reads an image, applies sigmoidal non-linearity contrast control, and writes the result to disk just like the previous contrast enhancement program, but now it does its work in parallel (assumes ImageMagick is built with OpenMP support).</p>
+<p><a
id="wand-view"></a>Now lets perform the same contrast enhancement while taking advantage of our dual or quad-core processing system by running the algorithm in parallel utilizing wand views. The <a href="../www/source/wand/sigmoidal-contrast.c">sigmoidal-contrast.c</a> module reads an image, applies sigmoidal non-linearity contrast control, and writes the result to disk just like the previous contrast enhancement program, but now it does its work in parallel (assumes ImageMagick is built with OpenMP support).</p>
<div class="viewport">
-<pre class="code">
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
{
#define ThrowViewException(view) \
{ \
- description=GetWandViewException(view,&severity); \
+ description=GetWandViewException(view,&severity); \
(void) fprintf(stderr,"%s %s %lu %s\n",GetMagickModule(),description); \
description=(char *) MagickRelinquishMemory(description); \
exit(-1); \
}
#define ThrowWandException(wand) \
{ \
- description=MagickGetException(wand,&severity); \
+ description=MagickGetException(wand,&severity); \
(void) fprintf(stderr,"%s %s %lu %s\n",GetMagickModule(),description); \
description=(char *) MagickRelinquishMemory(description); \
exit(-1); \
MagickWandTerminus();
return(0);
}
-</pre>
+</div>
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projects / imagemagick / blobdiff