File: gegl-plugin.h.html

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<!DOCTYPE html PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML>
<HEAD>
<TITLE>Enscript Output</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#1F00FF" ALINK="#FF0000" VLINK="#9900DD">
<A NAME="top">
<A NAME="file1">
<H1>../gegl/gegl-plugin.h</H1>

<PRE>
<I><FONT COLOR="#B22222">/* This file is the public operation GEGL API, this API will change to much
 * larger degrees than the api provided by gegl.h
 *
 * GEGL is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * GEGL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with GEGL; if not, see &lt;http://www.gnu.org/licenses/&gt;.
 *
 * 2000-2008 Øyvind Kolås.
 */</FONT></I>

#<B><FONT COLOR="#5F9EA0">ifndef</FONT></B> <FONT COLOR="#B8860B">__GEGL_PLUGIN_H__</FONT>
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">__GEGL_PLUGIN_H__</FONT>

#<B><FONT COLOR="#5F9EA0">ifdef</FONT></B> <FONT COLOR="#B8860B">HAVE_CONFIG_H</FONT>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&quot;config.h&quot;</FONT></B>
#<B><FONT COLOR="#5F9EA0">endif</FONT></B>

#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;string.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;glib-object.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;gegl.h&gt;</FONT></B>

<I><FONT COLOR="#B22222">/* Extra types needed when coding operations */</FONT></I>
<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperation        GeglOperation;
<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglNodeContext      GeglNodeContext;
<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglPad              GeglPad;
<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglConnection       GeglConnection;

#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;gegl-utils.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;gegl-buffer.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;gegl-paramspecs.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;gmodule.h&gt;</FONT></B>

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglModule     GeglModule;
<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglModuleInfo GeglModuleInfo;
<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglModuleDB   GeglModuleDB;

<I><FONT COLOR="#B22222">/***
 * Writing GEGL operations
 *
 */</FONT></I>

<I><FONT COLOR="#B22222">/*#include &lt;geglmodule.h&gt;*/</FONT></I>

<I><FONT COLOR="#B22222">/*  increment the ABI version each time one of the following changes:
 *
 *  - the libgeglmodule implementation (if the change affects modules).
 *  - GeglOperation or one of it's base classes changes. (XXX:-
 *    should be extended so a range of abi versions are accepted.
 */</FONT></I>

#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_MODULE_ABI_VERSION</FONT> 0x000A

<B><FONT COLOR="#228B22">struct</FONT></B> _GeglModuleInfo
{
  guint32  abi_version;
};

GType
<B><FONT COLOR="#0000FF">gegl_module_register_type</FONT></B> (GTypeModule     *module,
                           GType            parent_type,
                           <B><FONT COLOR="#228B22">const</FONT></B> gchar     *type_name,
                           <B><FONT COLOR="#228B22">const</FONT></B> GTypeInfo *type_info,
                           GTypeFlags       flags);



GeglBuffer     *<B><FONT COLOR="#0000FF">gegl_node_context_get_source</FONT></B> (GeglNodeContext *self,
                                              <B><FONT COLOR="#228B22">const</FONT></B> gchar     *padname);
GeglBuffer     *<B><FONT COLOR="#0000FF">gegl_node_context_get_target</FONT></B> (GeglNodeContext *self,
                                              <B><FONT COLOR="#228B22">const</FONT></B> gchar     *padname);
<B><FONT COLOR="#228B22">void</FONT></B>            <B><FONT COLOR="#0000FF">gegl_node_context_set_object</FONT></B> (GeglNodeContext *context,
                                              <B><FONT COLOR="#228B22">const</FONT></B> gchar     *padname,
                                              GObject         *data);

<B><FONT COLOR="#228B22">void</FONT></B>          <B><FONT COLOR="#0000FF">gegl_extension_handler_register</FONT></B> (<B><FONT COLOR="#228B22">const</FONT></B> gchar *extension,
                                                <B><FONT COLOR="#228B22">const</FONT></B> gchar *handler);
<B><FONT COLOR="#228B22">const</FONT></B> gchar * <B><FONT COLOR="#0000FF">gegl_extension_handler_get</FONT></B>      (<B><FONT COLOR="#228B22">const</FONT></B> gchar *extension);


#<B><FONT COLOR="#5F9EA0">if</FONT></B> <B><FONT COLOR="#5F9EA0">defined</FONT></B>(<FONT COLOR="#B8860B">__GNUC__</FONT>) &amp;&amp; (<FONT COLOR="#B8860B">__GNUC__</FONT> &gt;= 4)
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">HAS_G4FLOAT</FONT> 1
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;math.h&gt;</FONT></B>

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">float</FONT></B> g4float <B><FONT COLOR="#0000FF">__attribute__</FONT></B> ((vector_size (4*<B><FONT COLOR="#A020F0">sizeof</FONT></B>(<B><FONT COLOR="#228B22">float</FONT></B>))));

#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_a</FONT></B>(a)      ((float *)(&amp;a))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4floatR</FONT></B>(a)       g4float_a(a)[0]
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4floatG</FONT></B>(a)       g4float_a(a)[1]
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4floatB</FONT></B>(a)       g4float_a(a)[2]
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4floatA</FONT></B>(a)       g4float_a(a)[3]
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float</FONT></B>(a,b,c,d)  ((g4float){a,b,c,d})
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_all</FONT></B>(val)  g4float(val,val,val,val)
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">g4float_zero</FONT>      g4float_all(0.0)
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">g4float_one</FONT>       g4float_all(1.0)
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">g4float_half</FONT>      g4float_all(0.5)
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">g4float_half</FONT>      g4float_all(0.5)
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_mul</FONT></B>(a,val)  g4float_all(val)*(a)

#<B><FONT COLOR="#5F9EA0">ifdef</FONT></B> <FONT COLOR="#B8860B">USE_SSE</FONT>

#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_sqrt</FONT></B>(v)     __builtin_ia32_sqrtps((v))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_max</FONT></B>(a,b)    __builtin_ia32_maxps((a,b))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_min</FONT></B>(a,b)    __builtin_ia32_minps((a,b))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_rcp</FONT></B>(a,b)    __builtin_ia32_rcpps((v))

#<B><FONT COLOR="#5F9EA0">else</FONT></B>

#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_sqrt</FONT></B>(v)     g4float(sqrt(g4floatR(v)),\
                                    sqrt(g4floatG(v)),\
                                    sqrt(g4floatB(v)),\
                                    sqrt(g4floatA(v)))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_rcp</FONT></B>(v)      g4float(1.0/(g4floatR(v)),\
                                    1.0/(g4floatG(v)),\
                                    1.0/(g4floatB(v)),\
                                    1.0/(g4floatA(v)))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_max</FONT></B>(a,b)   g4float(\
                               gfloat4R(a)&gt;gfloat4R(b)?gfloat4R(a):gfloat4R(b),\
                               gfloat4G(a)&gt;gfloat4G(b)?gfloat4G(a):gfloat4G(b),\
                               gfloat4B(a)&gt;gfloat4B(b)?gfloat4B(a):gfloat4B(b),\
                               gfloat4A(a)&gt;gfloat4A(b)?gfloat4A(a):gfloat4A(b))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">g4float_min</FONT></B>(a,b)   g4float(\
                               gfloat4R(a)&lt;gfloat4R(b)?gfloat4R(a):gfloat4R(b),\
                               gfloat4G(a)&lt;gfloat4G(b)?gfloat4G(a):gfloat4G(b),\
                               gfloat4B(a)&lt;gfloat4B(b)?gfloat4B(a):gfloat4B(b),\
                               gfloat4A(a)&lt;gfloat4A(b)?gfloat4A(a):gfloat4A(b))
#<B><FONT COLOR="#5F9EA0">endif</FONT></B>

#<B><FONT COLOR="#5F9EA0">endif</FONT></B>

#<B><FONT COLOR="#5F9EA0">if</FONT></B> 1

#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;glib-object.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;babl/babl.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-filter.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-area-filter.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-point-filter.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-composer.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-point-composer.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-point-render.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-temporal.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-source.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-sink.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;operation/gegl-operation-meta.h&gt;</FONT></B>


#<B><FONT COLOR="#5F9EA0">else</FONT></B>

<I><FONT COLOR="#B22222">/***** ***/</FONT></I>


#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;glib-object.h&gt;</FONT></B>
#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F">&lt;babl/babl.h&gt;</FONT></B>


<I><FONT COLOR="#B22222">/***
 * GeglOperation:
 *
 * All the image processing code in GEGL is implemented as
 * GeglOperations, GEGL oeprations are implemented as GObject with a
 * convenience API called chanting that abstracts away the boiler
 * plater needed to generate introspectable named properties of
 * different types.
 *
 * Most types of operations like: filters, composers, sources, sinks,
 * point operations, compositing operations, and spatial operations
 * with fixed neighbourhoods. These base classes builds on top of the
 * GeglOperationsClass:
 *
 * See &lt;a href='gegl-operation.h.html'&gt;gegl-operation.h&lt;/a&gt; for details.
 */</FONT></I>

#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_TYPE_OPERATION</FONT>            (gegl_operation_get_type ())
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION</FONT></B>(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION, GeglOperation))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_CLASS</FONT></B>(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION, GeglOperationClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION</FONT></B>(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_CLASS</FONT></B>(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_GET_CLASS</FONT></B>(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION, GeglOperationClass))

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationClass GeglOperationClass;

<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperation
{
  GObject parent_instance;

  <I><FONT COLOR="#B22222">/*&lt; private &gt;*/</FONT></I>
  GeglNode *node;  <I><FONT COLOR="#B22222">/* the node that this operation object is communicated
                      with through */</FONT></I>
};

<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationClass
{
  GObjectClass    parent_class;

  <B><FONT COLOR="#228B22">const</FONT></B> gchar    *name;        <I><FONT COLOR="#B22222">/* name(string) used to create/indetify
                                    this type of operation in GEGL*/</FONT></I>
  <B><FONT COLOR="#228B22">const</FONT></B> gchar    *description; <I><FONT COLOR="#B22222">/* textual description of the operation */</FONT></I>
  <B><FONT COLOR="#228B22">const</FONT></B> gchar    *categories;  <I><FONT COLOR="#B22222">/* a colon seperated list of categories */</FONT></I>

  gboolean        no_cache;    <I><FONT COLOR="#B22222">/* do not create a cache for this operation */</FONT></I>

  <I><FONT COLOR="#B22222">/* attach this operation with a GeglNode, override this if you are creating a
   * GeglGraph, it is already defined for Filters/Sources/Composers.
   */</FONT></I>
  <B><FONT COLOR="#228B22">void</FONT></B>          (*attach)                    (GeglOperation *operation);

  <I><FONT COLOR="#B22222">/* prepare() is called on each operation providing data to a node that
   * is requested to provide a rendered result. When prepare is called all
   * properties are known. This is the time to set desired pixel formats
   * for input and output pads.
   */</FONT></I>
  <B><FONT COLOR="#228B22">void</FONT></B>          (*prepare)                   (GeglOperation *operation);

  <I><FONT COLOR="#B22222">/* Returns the bounding rectangle for the data that is defined by this op.
   * (is already implemented in GeglOperationPointFilter and
   * GeglOperationPointComposer, GeglOperationAreaFilter base classes.
   */</FONT></I>
  GeglRectangle (*get_bounding_box)          (GeglOperation *operation);

  <I><FONT COLOR="#B22222">/* Computes the region in output (same affected rect assumed for all outputs)
   * when a given region has changed on an input. Used to aggregate dirt in the
   * graph. A default implementation of this, if not provided should probably
   * be to report that the entire defined region is dirtied.
   */</FONT></I>
  GeglRectangle (*get_invalidated_by_change) (GeglOperation       *operation,
                                              <B><FONT COLOR="#228B22">const</FONT></B> gchar         *input_pad,
                                              <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *input_region);

  <I><FONT COLOR="#B22222">/* Computes the rectangle needed to be correctly computed in a buffer
   * on the named input_pad, for a given region of interest.
   */</FONT></I>
  GeglRectangle (*get_required_for_output)   (GeglOperation       *operation,
                                              <B><FONT COLOR="#228B22">const</FONT></B> gchar         *input_pad,
                                              <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *roi);

  <I><FONT COLOR="#B22222">/* Adjust result rect, adapts the rectangle used for computing results.
   * (useful for global operations like contrast stretching, as well as
   * file loaders to force caching of the full raster).
   */</FONT></I>
  GeglRectangle (*get_cached_region)         (GeglOperation       *operation,
                                              <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *roi);

  <I><FONT COLOR="#B22222">/* Perform processing for the @output_pad, pad The result_rect provides the
   * region to process. For sink operations @output_pad can be ignored but the
   * result_rect is then then indicating the data available for consumption.
   */</FONT></I>
  gboolean      (*process)                   (GeglOperation       *operation,
                                              GeglNodeContext     *context,
                                              <B><FONT COLOR="#228B22">const</FONT></B> gchar         *output_pad,
                                              <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *result_rect);

  <I><FONT COLOR="#B22222">/* XXX: What is GeglNode doing in this part of the API?
   * Returns the node providing data for a specific location within the
   * operations output. Does this recurse?, perhaps it should only point out
   * which pad the data is coming from?
   */</FONT></I>
  GeglNode*     (*detect)                    (GeglOperation       *operation,
                                              gint                 x,
                                              gint                 y);
};




GType           <B><FONT COLOR="#0000FF">gegl_operation_get_type</FONT></B>        (<B><FONT COLOR="#228B22">void</FONT></B>) G_GNUC_CONST;

GeglRectangle   gegl_operation_get_invalidated_by_change
                                                 (GeglOperation *operation,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> gchar   *input_pad,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *input_region);
GeglRectangle   <B><FONT COLOR="#0000FF">gegl_operation_get_bounding_box</FONT></B>  (GeglOperation *operation);

<I><FONT COLOR="#B22222">/* retrieves the bounding box of an input pad */</FONT></I>
GeglRectangle * gegl_operation_source_get_bounding_box
                                                 (GeglOperation *operation,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> gchar   *pad_name);


GeglRectangle   <B><FONT COLOR="#0000FF">gegl_operation_get_cached_region</FONT></B> (GeglOperation *operation,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *roi);

GeglRectangle   gegl_operation_get_required_for_output
                                                 (GeglOperation *operation,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> gchar   *input_pad,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *roi);

GeglNode       *<B><FONT COLOR="#0000FF">gegl_operation_detect</FONT></B>            (GeglOperation *operation,
                                                  gint           x,
                                                  gint           y);


<I><FONT COLOR="#B22222">/* virtual method invokers that change behavior based on the roi being computed,
 * needs a context_id being based that is used for storing context data.
 */</FONT></I>

<B><FONT COLOR="#228B22">void</FONT></B>            <B><FONT COLOR="#0000FF">gegl_operation_attach</FONT></B>            (GeglOperation       *operation,
                                                  GeglNode            *node);
<B><FONT COLOR="#228B22">void</FONT></B>            <B><FONT COLOR="#0000FF">gegl_operation_prepare</FONT></B>           (GeglOperation       *operation);
gboolean        <B><FONT COLOR="#0000FF">gegl_operation_process</FONT></B>           (GeglOperation       *operation,
                                                 GeglNodeContext     *context,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> gchar         *output_pad,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *result_rect);

<I><FONT COLOR="#B22222">/* create a pad for a specified property for this operation, this method is
 * to be called from the attach method of operations, most operations do not
 * have to care about this since a super class like filter, sink, source or
 * composer already does so.
 */</FONT></I>
<B><FONT COLOR="#228B22">void</FONT></B>       <B><FONT COLOR="#0000FF">gegl_operation_create_pad</FONT></B>             (GeglOperation *operation,
                                                  GParamSpec    *param_spec);

<I><FONT COLOR="#B22222">/* specify the bablformat for a pad on this operation (XXX: document when
 * this is legal, at the moment, only used internally in some ops,. but might
 * turn into a global mechanism) */</FONT></I>
<B><FONT COLOR="#228B22">void</FONT></B>       <B><FONT COLOR="#0000FF">gegl_operation_set_format</FONT></B>             (GeglOperation *operation,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> gchar   *pad_name,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> Babl    *format);


<B><FONT COLOR="#228B22">const</FONT></B> Babl * <B><FONT COLOR="#0000FF">gegl_operation_get_format</FONT></B>           (GeglOperation *operation,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> gchar   *pad_name);



<I><FONT COLOR="#B22222">/* retrieves the node providing data to a named input pad */</FONT></I>
GeglNode      * <B><FONT COLOR="#0000FF">gegl_operation_get_source_node</FONT></B>   (GeglOperation *operation,
                                                  <B><FONT COLOR="#228B22">const</FONT></B> gchar   *pad_name);


#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_TYPE_OPERATION_SOURCE</FONT>            (gegl_operation_source_get_type ())
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_SOURCE</FONT></B>(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_SOURCE, GeglOperationSource))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_SOURCE_CLASS</FONT></B>(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_SOURCE, GeglOperationSourceClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_SOURCE</FONT></B>(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_SOURCE, GeglOperationSource))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_SOURCE_CLASS</FONT></B>(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_SOURCE, GeglOperationSourceClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_SOURCE_GET_CLASS</FONT></B>(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_SOURCE, GeglOperationSourceClass))

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationSource  GeglOperationSource;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationSource
{
  GeglOperation parent_instance;
};

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationSourceClass GeglOperationSourceClass;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationSourceClass
{
  GeglOperationClass parent_class;

  gboolean (* process) (GeglOperation       *self,
                        GeglBuffer          *output,
                        <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *result);
};

GType <B><FONT COLOR="#0000FF">gegl_operation_source_get_type</FONT></B> (<B><FONT COLOR="#228B22">void</FONT></B>) G_GNUC_CONST;



#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_TYPE_OPERATION_SINK</FONT>            (gegl_operation_sink_get_type ())
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_SINK</FONT></B>(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_SINK, GeglOperationSink))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_SINK_CLASS</FONT></B>(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_SINK, GeglOperationSinkClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_SINK</FONT></B>(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_SINK))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_SINK_CLASS</FONT></B>(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_SINK))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_SINK_GET_CLASS</FONT></B>(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_SINK, GeglOperationSinkClass))

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationSink  GeglOperationSink;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationSink
{
  GeglOperation parent_instance;
};

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationSinkClass GeglOperationSinkClass;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationSinkClass
{
  GeglOperationClass parent_class;

  gboolean           needs_full;

  gboolean (* process) (GeglOperation       *self,
                        GeglBuffer          *input,
                        <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *result);
};

GType    <B><FONT COLOR="#0000FF">gegl_operation_sink_get_type</FONT></B>   (<B><FONT COLOR="#228B22">void</FONT></B>) G_GNUC_CONST;

gboolean <B><FONT COLOR="#0000FF">gegl_operation_sink_needs_full</FONT></B> (GeglOperation *operation);



#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_TYPE_OPERATION_FILTER</FONT>            (gegl_operation_filter_get_type ())
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_FILTER</FONT></B>(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_FILTER, GeglOperationFilter))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_FILTER_CLASS</FONT></B>(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_FILTER, GeglOperationFilterClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_FILTER</FONT></B>(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_FILTER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_FILTER_CLASS</FONT></B>(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_FILTER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_FILTER_GET_CLASS</FONT></B>(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_FILTER, GeglOperationFilterClass))

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationFilter  GeglOperationFilter;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationFilter
{
  GeglOperation parent_instance;
};

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationFilterClass GeglOperationFilterClass;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationFilterClass
{
  GeglOperationClass parent_class;

  gboolean (* process) (GeglOperation       *self,
                        GeglBuffer          *input,
                        GeglBuffer          *output,
                        <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *result);
};

GType <B><FONT COLOR="#0000FF">gegl_operation_filter_get_type</FONT></B> (<B><FONT COLOR="#228B22">void</FONT></B>) G_GNUC_CONST;


#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_TYPE_OPERATION_COMPOSER</FONT>            (gegl_operation_composer_get_type ())
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_COMPOSER</FONT></B>(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_COMPOSER, GeglOperationComposer))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_COMPOSER_CLASS</FONT></B>(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_COMPOSER, GeglOperationComposerClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_COMPOSER</FONT></B>(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_COMPOSER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_COMPOSER_CLASS</FONT></B>(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_COMPOSER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_COMPOSER_GET_CLASS</FONT></B>(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_COMPOSER, GeglOperationComposerClass))

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationComposer  GeglOperationComposer;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationComposer
{
  GeglOperation parent_instance;
};

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationComposerClass GeglOperationComposerClass;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationComposerClass
{
  GeglOperationClass parent_class;

  gboolean (* process) (GeglOperation       *self,
                        GeglBuffer          *input,
                        GeglBuffer          *aux,
                        GeglBuffer          *output,
                        <B><FONT COLOR="#228B22">const</FONT></B> GeglRectangle *result);
};

GType <B><FONT COLOR="#0000FF">gegl_operation_composer_get_type</FONT></B> (<B><FONT COLOR="#228B22">void</FONT></B>) G_GNUC_CONST;




#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_TYPE_OPERATION_POINT_COMPOSER</FONT>            (gegl_operation_point_composer_get_type ())
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_POINT_COMPOSER</FONT></B>(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_POINT_COMPOSER, GeglOperationPointComposer))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_POINT_COMPOSER_CLASS</FONT></B>(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_POINT_COMPOSER, GeglOperationPointComposerClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_POINT_COMPOSER</FONT></B>(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_POINT_COMPOSER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_POINT_COMPOSER_CLASS</FONT></B>(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_POINT_COMPOSER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_POINT_COMPOSER_GET_CLASS</FONT></B>(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_POINT_COMPOSER, GeglOperationPointComposerClass))

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationPointComposer  GeglOperationPointComposer;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationPointComposer
{
  GeglOperationComposer parent_instance;

  <I><FONT COLOR="#B22222">/*&lt; private &gt;*/</FONT></I>
};

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationPointComposerClass GeglOperationPointComposerClass;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationPointComposerClass
{
  GeglOperationComposerClass parent_class;

  gboolean (* process) (GeglOperation *self,      <I><FONT COLOR="#B22222">/* for parameters      */</FONT></I>
                        <B><FONT COLOR="#228B22">void</FONT></B>          *in,
                        <B><FONT COLOR="#228B22">void</FONT></B>          *aux,
                        <B><FONT COLOR="#228B22">void</FONT></B>          *out,
                        glong          samples);  <I><FONT COLOR="#B22222">/* number of samples   */</FONT></I>

};

GType <B><FONT COLOR="#0000FF">gegl_operation_point_composer_get_type</FONT></B> (<B><FONT COLOR="#228B22">void</FONT></B>) G_GNUC_CONST;




#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_TYPE_OPERATION_POINT_FILTER</FONT>            (gegl_operation_point_filter_get_type ())
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_POINT_FILTER</FONT></B>(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_POINT_FILTER, GeglOperationPointFilter))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_POINT_FILTER_CLASS</FONT></B>(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_POINT_FILTER, GeglOperationPointFilterClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_POINT_FILTER</FONT></B>(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_POINT_FILTER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_POINT_FILTER_CLASS</FONT></B>(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_POINT_FILTER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_POINT_FILTER_GET_CLASS</FONT></B>(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_POINT_FILTER, GeglOperationPointFilterClass))

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationPointFilter  GeglOperationPointFilter;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationPointFilter
{
  GeglOperationFilter parent_instance;
};

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationPointFilterClass GeglOperationPointFilterClass;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationPointFilterClass
{
  GeglOperationFilterClass parent_class;

  gboolean (* process) (GeglOperation *self,      <I><FONT COLOR="#B22222">/* for parameters      */</FONT></I>
                        <B><FONT COLOR="#228B22">void</FONT></B>          *in_buf,    <I><FONT COLOR="#B22222">/* input buffer */</FONT></I>
                        <B><FONT COLOR="#228B22">void</FONT></B>          *out_buf,   <I><FONT COLOR="#B22222">/* output buffer */</FONT></I>
                        glong          samples);  <I><FONT COLOR="#B22222">/* number of samples   */</FONT></I>
};

GType <B><FONT COLOR="#0000FF">gegl_operation_point_filter_get_type</FONT></B> (<B><FONT COLOR="#228B22">void</FONT></B>) G_GNUC_CONST;



#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_TYPE_OPERATION_AREA_FILTER</FONT>            (gegl_operation_area_filter_get_type ())
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_AREA_FILTER</FONT></B>(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_AREA_FILTER, GeglOperationAreaFilter))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_AREA_FILTER_CLASS</FONT></B>(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_AREA_FILTER, GeglOperationAreaFilterClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_AREA_FILTER</FONT></B>(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_AREA_FILTER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_AREA_FILTER_CLASS</FONT></B>(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_AREA_FILTER))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_AREA_FILTER_GET_CLASS</FONT></B>(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_AREA_FILTER, GeglOperationAreaFilterClass))

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationAreaFilter  GeglOperationAreaFilter;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationAreaFilter
{
  GeglOperationFilter parent_instance;

  gint                left;
  gint                right;
  gint                top;
  gint                bottom;
};

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationAreaFilterClass GeglOperationAreaFilterClass;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationAreaFilterClass
{
  GeglOperationFilterClass parent_class;
};

GType <B><FONT COLOR="#0000FF">gegl_operation_area_filter_get_type</FONT></B> (<B><FONT COLOR="#228B22">void</FONT></B>) G_GNUC_CONST;


#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">GEGL_TYPE_OPERATION_META</FONT>            (gegl_operation_meta_get_type ())
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_META</FONT></B>(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_META, GeglOperationMeta))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_META_CLASS</FONT></B>(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_META, GeglOperationMetaClass))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_META</FONT></B>(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_META))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_IS_OPERATION_META_CLASS</FONT></B>(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_META))
#<B><FONT COLOR="#5F9EA0">define</FONT></B> <B><FONT COLOR="#0000FF">GEGL_OPERATION_META_GET_CLASS</FONT></B>(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_META, GeglOperationMetaClass))

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationMeta  GeglOperationMeta;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationMeta
{
  GeglOperation parent_instance;
  GSList       *redirects;
};

<B><FONT COLOR="#228B22">typedef</FONT></B> <B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationMetaClass GeglOperationMetaClass;
<B><FONT COLOR="#228B22">struct</FONT></B> _GeglOperationMetaClass
{
  GeglOperationClass parent_class;
};


GType <B><FONT COLOR="#0000FF">gegl_operation_meta_get_type</FONT></B>         (<B><FONT COLOR="#228B22">void</FONT></B>) G_GNUC_CONST;

<B><FONT COLOR="#228B22">void</FONT></B>  <B><FONT COLOR="#0000FF">gegl_operation_meta_redirect</FONT></B>         (GeglOperation     *operation,
                                            <B><FONT COLOR="#228B22">const</FONT></B> gchar       *name,
                                            GeglNode          *internal,
                                            <B><FONT COLOR="#228B22">const</FONT></B> gchar       *internal_name);

<B><FONT COLOR="#228B22">void</FONT></B>  <B><FONT COLOR="#0000FF">gegl_operation_meta_property_changed</FONT></B> (GeglOperationMeta *self,
                                            GParamSpec        *arg1,
                                            gpointer           user_data);



#<B><FONT COLOR="#5F9EA0">endif</FONT></B>

#<B><FONT COLOR="#5F9EA0">endif</FONT></B>  <I><FONT COLOR="#B22222">/* __GEGL_PLUGIN_H__ */</FONT></I>
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