/* 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 <http://www.gnu.org/licenses/>.

 *

 * 2000-2008 Øyvind Kolås.

 */

#ifndef __GEGL_PLUGIN_H__

#define __GEGL_PLUGIN_H__

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <string.h>

#include <glib-object.h>

#include <gegl.h>

G_BEGIN_DECLS

/* Extra types needed when coding operations */

typedef struct _GeglOperation        GeglOperation;

typedef struct _GeglOperationContext GeglOperationContext;

typedef struct _GeglPad              GeglPad;

typedef struct _GeglConnection       GeglConnection;

#include <gegl-matrix.h>

#include <gegl-utils.h>

#include <gegl-buffer.h>

#include <gegl-paramspecs.h>

#include <gmodule.h>

typedef struct _GeglModule     GeglModule;

typedef struct _GeglModuleInfo GeglModuleInfo;

typedef struct _GeglModuleDB   GeglModuleDB;

/***

 * Writing GEGL operations

 *

 */

/*#include <geglmodule.h>*/

/*  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.

 */

#define GEGL_MODULE_ABI_VERSION 0x000A

struct _GeglModuleInfo

{

  guint32  abi_version;

};

GType gegl_module_register_type (GTypeModule     *module,

                                 GType            parent_type,

                                 const gchar     *type_name,

                                 const GTypeInfo *type_info,

                                 GTypeFlags       flags);

gint            gegl_operation_context_get_level  (GeglOperationContext *self);

GeglBuffer     *gegl_operation_context_get_source (GeglOperationContext *self,

                                                   const gchar          *padname);

GeglBuffer     *gegl_operation_context_get_target (GeglOperationContext *self,

                                                   const gchar          *padname);

void            gegl_operation_context_set_object (GeglOperationContext *context,

                                                   const gchar          *padname,

                                                   GObject              *data);

void            gegl_operation_context_take_object(GeglOperationContext *context,

                                                   const gchar          *padname,

                                                   GObject              *data);

GObject        *gegl_operation_context_get_object (GeglOperationContext *context,

                                                   const gchar          *padname);

void            gegl_extension_handler_register    (const gchar         *extension,

                                                    const gchar         *handler);

void            gegl_extension_handler_register_saver

                                                   (const gchar         *extension,

                                                    const gchar         *handler);

const gchar   * gegl_extension_handler_get         (const gchar         *extension);

const gchar   * gegl_extension_handler_get_saver   (const gchar         *extension);

/* code template utility, updates the jacobian matrix using

 * a user defined mapping function for displacement, example

 * with an identity transform (note that for the identity

 * transform this is massive computational overhead that can

 * be skipped by passing NULL to the sampler.

 *

 * #define gegl_unmap(x,y,dx,dy) { dx=x; dy=y; }

 *

 * gegl_sampler_compute_scale (scale, x, y);

 * gegl_unmap(x,y,sample_x,sample_y);

 * gegl_buffer_sample (buffer, sample_x, sample_y, scale, dest, format,

 *                     GEGL_SAMPLER_LOHALO);

 *

 * #undef gegl_unmap      // IMPORTANT undefine map macro

 */

#define gegl_sampler_compute_scale(matrix, x, y) \

{                                       \

  float ax, ay, bx, by;                 \

  gegl_unmap(x + 0.5, y, ax, ay);       \

  gegl_unmap(x - 0.5, y, bx, by);       \

  matrix.coeff[0][0] = ax - bx;         \

  matrix.coeff[1][0] = ay - by;         \

  gegl_unmap(x, y + 0.5, ax, ay);       \

  gegl_unmap(x, y - 0.5, bx, by);       \

  matrix.coeff[0][1] = ax - bx;         \

  matrix.coeff[1][1] = ay - by;         \

}

typedef struct

{

  GObject       parent_instance;

  void (* get) (GeglSampler *self,

                gdouble      x,

                gdouble      y,

                GeglMatrix2 *scale,

                void        *output);

} SamplerMock;

#define gegl_sampler_get(sampler,x,y,scale,dest) \

  ((SamplerMock*)(sampler))->get((sampler),(x),(y),(scale),(dest))

#include <glib-object.h>

#include <babl/babl.h>

#include <operation/gegl-operation.h>

#include <operation/gegl-operation-filter.h>

#include <operation/gegl-operation-area-filter.h>

#include <operation/gegl-operation-point-filter.h>

#include <operation/gegl-operation-composer.h>

#include <operation/gegl-operation-composer3.h>

#include <operation/gegl-operation-point-composer.h>

#include <operation/gegl-operation-point-composer3.h>

#include <operation/gegl-operation-point-render.h>

#include <operation/gegl-operation-temporal.h>

#include <operation/gegl-operation-source.h>

#include <operation/gegl-operation-sink.h>

#include <operation/gegl-operation-meta.h>

#include <gegl-lookup.h>

G_END_DECLS

#endif  /* __GEGL_PLUGIN_H__ */