/* 
 * Copyright © 2012 Intel Corporation
 *
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 this library. If not, see <http://www.gnu.org/licenses/>.
 *
 * Author: Benjamin Segovia <benjamin.segovia@intel.com>
 */

#ifndef __CL_SAMPLER_H__
#define __CL_SAMPLER_H__

#include "CL/cl.h"
#include "../backend/src/ocl_common_defines.h"
#include <stdint.h>

/* How to access images */
struct _cl_sampler {
  DEFINE_ICD(dispatch)
  uint64_t magic;            /* To identify it as a sampler object */
  volatile int ref_n;        /* This object is reference counted */
  cl_sampler prev, next;     /* We chain the samplers in the allocator */
  cl_context ctx;            /* Context it belongs to */
  cl_bool normalized_coords; /* Are coordinates normalized? */
  cl_addressing_mode address;/* CLAMP / REPEAT and so on... */
  cl_filter_mode filter;     /* LINEAR / NEAREST mostly */
  uint32_t clkSamplerValue;
};

/* Create a new sampler object */
extern cl_sampler cl_sampler_new(cl_context,
                                 cl_bool,
                                 cl_addressing_mode,
                                 cl_filter_mode,
                                 cl_int *err);

/* Unref the object and delete it if no more reference on it */
extern void cl_sampler_delete(cl_sampler);

/* Add one more reference to this object */
extern void cl_sampler_add_ref(cl_sampler);

/* set a sampler kernel argument */
int cl_set_sampler_arg_slot(cl_kernel k, int index, cl_sampler sampler);

#endif /* __CL_SAMPLER_H__ */