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/*
* 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/>.
*
*/
#include <assert.h>
#include "cl_context.h"
#include "cl_internals.h"
#include "cl_alloc.h"
#include "cl_sampler.h"
#include "cl_mutex.h"
#include "cl_context.h"
#include "cl_device_id.h"
#include "cl_platform_id.h"
#include "cl_driver.h"
static void cl_sampler_delete(cl_sampler sampler)
{
assert(sampler);
assert(sampler->ctx);
CL_MUTEX_LOCK(&sampler->ctx->lock);
if (sampler->prev)
sampler->prev->next = sampler->next;
if (sampler->next)
sampler->next->prev = sampler->prev;
if (sampler->ctx->samplers == sampler)
sampler->ctx->samplers = sampler->next;
CL_MUTEX_UNLOCK(&sampler->ctx->lock);
cl_release_context(sampler->ctx);
if (sampler->ctx->device_num > 1) {
CL_FREE(sampler->pdata);
}
CL_FREE(sampler);
}
static void cl_release_sampler(cl_sampler sampler)
{
cl_uint i;
assert(sampler);
if (cl_ref_dec(&sampler->ref_n) > 1)
return;
for (i = 0; i < sampler->ctx->device_num; i++) {
sampler->ctx->devices[i]->driver->release_sampler(sampler,
sampler->ctx->devices[i]);
}
cl_sampler_delete(sampler);
}
static cl_sampler cl_sampler_new(cl_context ctx, cl_bool normalized_coords,
cl_addressing_mode addressing, cl_filter_mode filter)
{
cl_sampler sampler = NULL;
/* Allocate and inialize the structure itself */
sampler = CL_CALLOC(1, sizeof(_cl_sampler));
if (sampler == NULL)
return NULL;
cl_ref_set_val(&sampler->ref_n, 1);
sampler->magic = CL_MAGIC_SAMPLER_HEADER;
sampler->normalized_coords = normalized_coords;
sampler->address = addressing;
sampler->filter = filter;
/* Create the private pointer array if device > 1 */
if (ctx->device_num > 1) {
sampler->pdata = CL_CALLOC(ctx->device_num, sizeof(void*));
if (sampler->pdata == NULL) {
CL_FREE(sampler);
return NULL;
}
}
sampler->ctx = ctx;
cl_retain_context(ctx);
/* Append the sampler in the context sampler list */
CL_MUTEX_LOCK(&ctx->lock);
sampler->next = ctx->samplers;
if (ctx->samplers != NULL)
ctx->samplers->prev = sampler;
ctx->samplers = sampler;
CL_MUTEX_UNLOCK(&ctx->lock);
return sampler;
}
static cl_sampler cl_create_sampler(cl_context ctx, cl_bool normalized_coords, cl_addressing_mode addressing,
cl_filter_mode filter, cl_int *errcode_ret)
{
cl_sampler sampler = NULL;
cl_int err = CL_SUCCESS;
cl_uint i;
sampler = cl_sampler_new(ctx, normalized_coords, addressing, filter);
if (sampler == NULL) {
err = CL_OUT_OF_HOST_MEMORY;
goto exit;
}
for (i = 0; i < ctx->device_num; i++) {
err = ctx->devices[i]->driver->create_sampler(sampler, ctx->devices[i],
normalized_coords, addressing, filter);
if (err != CL_SUCCESS)
goto error;
}
exit:
if (errcode_ret)
*errcode_ret = err;
return sampler;
error:
cl_release_sampler(sampler);
sampler = NULL;
goto exit;
}
static cl_int cl_retain_sampler(cl_sampler sampler)
{
assert(sampler);
int ret = cl_ref_inc_if_positive(&sampler->ref_n);
if (ret > 0)
return ret;
return 0;
}
/**************************************************************************************
************************* CL APIs ********************************
**************************************************************************************/
cl_sampler
clCreateSampler(cl_context context,
cl_bool normalized,
cl_addressing_mode addressing,
cl_filter_mode filter,
cl_int* errcode_ret)
{
cl_sampler sampler = NULL;
cl_int err = CL_SUCCESS;
CHECK_CONTEXT(context);
sampler = cl_create_sampler(context, normalized, addressing, filter, errcode_ret);
if (errcode_ret)
*errcode_ret = err;
error:
return sampler;
}
cl_int
clReleaseSampler(cl_sampler sampler)
{
cl_int err = CL_SUCCESS;
CHECK_SAMPLER(sampler);
cl_release_sampler(sampler);
error:
return err;
}
cl_int
clRetainSampler(cl_sampler sampler)
{
cl_int err = CL_SUCCESS;
CHECK_SAMPLER(sampler);
if (cl_retain_sampler(sampler) == 0) {
err = CL_INVALID_SAMPLER;
}
error:
return err;
}
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