#ifndef __GEGL_BUFFER_CL_ITERATOR_H__

#define __GEGL_BUFFER_CL_ITERATOR_H__

#include "gegl-buffer.h"

#include "opencl/gegl-cl.h"

#define GEGL_CL_NTEX 16

#define GEGL_CL_BUFFER_MAX_ITERATORS 6

enum

{

  GEGL_CL_BUFFER_READ   = 1,

  GEGL_CL_BUFFER_WRITE  = 2,

  GEGL_CL_BUFFER_AUX    = 3

};

typedef struct GeglBufferClIterator

{

  gint          n;

  size_t        size [GEGL_CL_BUFFER_MAX_ITERATORS][GEGL_CL_NTEX];  /* length of current data in pixels */

  cl_mem        tex  [GEGL_CL_BUFFER_MAX_ITERATORS][GEGL_CL_NTEX];

  GeglRectangle roi  [GEGL_CL_BUFFER_MAX_ITERATORS][GEGL_CL_NTEX];

} GeglBufferClIterator;

gint gegl_buffer_cl_iterator_add (GeglBufferClIterator  *iterator,

                                  GeglBuffer            *buffer,

                                  const GeglRectangle   *roi,

                                  const Babl            *format,

                                  guint                  flags,

                                  GeglAbyssPolicy        abyss_policy);

gint gegl_buffer_cl_iterator_add_2 (GeglBufferClIterator  *iterator,

                                    GeglBuffer            *buffer,

                                    const GeglRectangle   *roi,

                                    const Babl            *format,

                                    guint                  flags,

                                    gint                   left,

                                    gint                   right,

                                    gint                   top,

                                    gint                   bottom,

                                    GeglAbyssPolicy        abyss_policy);

gboolean gegl_buffer_cl_iterator_next (GeglBufferClIterator *iterator, gboolean *err);

GeglBufferClIterator *gegl_buffer_cl_iterator_new (GeglBuffer          *buffer,

                                                   const GeglRectangle *roi,

                                                   const Babl          *format,

                                                   guint                flags,

                                                   GeglAbyssPolicy      abyss_policy);

#endif