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/**
* The OpenCL PHP extension
*
* @package php-opencl
* @author Ryusuke SEKIYAMA <rsky0711@gmail.com>
* @copyright 2012 Ryusuke SEKIYAMA
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/

#include "memory.h"
#include "params.h"

#define get_info ((phpcl_get_info_func_t)_get_mem_object_info)
#define get_info_ex NULL
#define get_image_info ((phpcl_get_info_func_t)_get_image_info)
#define get_image_info_ex NULL

/* {{{ globals */

static const phpcl_info_param_t mem_info_params[] = {
{ NULL, 0 }
};

/* }}} */
/* {{{ _get_mem_object_info() */

static cl_int _get_mem_object_info(cl_mem memobj,
                                   void *reserved __attribute__ ((unused)),
                                   cl_mem_info name,
                                   size_t value_size,
                                   void *value,
                                   size_t *value_size_ret)
{
return clGetMemObjectInfo(memobj, name, value_size, value, value_size_ret);
}

/* }}} */
/* {{{ _get_mem_object_info_all() */

static void _get_mem_object_info_all(
INTERNAL_FUNCTION_PARAMETERS,
cl_mem memobj)
{
const phpcl_info_param_t *param = mem_info_params;
char buf[32] = {0};

array_init_size(return_value, 8);
snprintf(buf, sizeof(buf), "%p", memobj);
add_assoc_string(return_value, "id", buf, 1);

while (param->key != NULL) {
zval *entry = phpcl_get_info(get_info, get_info_ex,
memobj, NULL, param TSRMLS_CC);
if (entry) {
add_assoc_zval(return_value, param->key, entry);
} else {
add_assoc_null(return_value, param->key);
}
param++;
}
}

/* }}} */
/* {{{ _get_mem_object_info_by_name() */

static void _get_mem_object_info_by_name(
INTERNAL_FUNCTION_PARAMETERS,
cl_mem memobj, cl_int name)
{
const phpcl_info_param_t *param = mem_info_params;

RETVAL_NULL();

while (param->key != NULL) {
if (param->name == name) {
zval *entry = phpcl_get_info(get_info, get_info_ex,
memobj, NULL, param TSRMLS_CC);
if (entry) {
RETVAL_ZVAL(entry, 0, 1);
}
return;
}
param++;
}
}

/* }}} */
/* {{{ mixed cl_get_mem_object_info(resource cl_mem memobj[, int name]) */

PHPCL_FUNCTION(cl_get_mem_object_info)
{
zval *zid = NULL;
phpcl_memobj_t *mem = NULL;
long name = 0;

RETVAL_FALSE;

if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC,
"r|l", &zid, &name) == FAILURE) {
return;
}
ZEND_FETCH_RESOURCE(mem, phpcl_memobj_t *, &zid, -1,
"cl_mem", phpcl_le_mem());

if (ZEND_NUM_ARGS() == 2) {
_get_mem_object_info_by_name(INTERNAL_FUNCTION_PARAM_PASSTHRU, mem->memobj, (cl_int)name);
} else {
_get_mem_object_info_all(INTERNAL_FUNCTION_PARAM_PASSTHRU, mem->memobj);
}
}

/* }}} */
/* {{{ _check_mem_flags() */

static void _check_mem_flags(long *flags_arg TSRMLS_DC)
{
cl_mem_flags flags = (cl_mem_flags)(*flags_arg);
if (flags & CL_MEM_USE_HOST_PTR) {
php_error_docref(NULL TSRMLS_CC, E_WARNING,
"CL_MEM_USE_HOST_PTR flag is not yet supported.");
}
if (flags & CL_MEM_ALLOC_HOST_PTR) {
php_error_docref(NULL TSRMLS_CC, E_WARNING,
"CL_MEM_ALLOC_HOST_PTR flag is not yet supported.");
}
if (flags & CL_MEM_COPY_HOST_PTR) {
php_error_docref(NULL TSRMLS_CC, E_WARNING,
"CL_MEM_COPY_HOST_PTR flag is not yet supported.");
}
flags = flags & (CL_MEM_READ_WRITE | CL_MEM_WRITE_ONLY | CL_MEM_READ_ONLY);
*flags_arg = (long)flags;
}

/* }}} */
/* {{{ resource cl_mem cl_create_buffer(resource cl_context context, int flags, int size) */

PHPCL_FUNCTION(cl_create_buffer)
{
cl_int errcode = CL_SUCCESS;
zval *zcontext = NULL;
phpcl_context_t *ctx = NULL;
long flags = 0;
long size = 0;
void *host_ptr = NULL;
cl_mem memobj = NULL;

RETVAL_FALSE;

if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC,
"rll", &zcontext, &flags, &size) == FAILURE) {
return;
}
ZEND_FETCH_RESOURCE(ctx, phpcl_context_t *, &zcontext, -1,
"cl_context", phpcl_le_context());

_check_mem_flags(&flags TSRMLS_CC);

memobj = clCreateBuffer(ctx->context, (cl_mem_flags)flags, (size_t)size,
host_ptr, &errcode);
if (memobj) {
phpcl_memobj_t *mem = emalloc(sizeof(phpcl_memobj_t));
mem->memobj = memobj;
mem->ptr = host_ptr;
ZEND_REGISTER_RESOURCE(return_value, mem, phpcl_le_mem());
}
}

/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
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