#include <stdio.h>
#include <CL/cl.h>
#include <stdlib.h>
#include <stdint.h>

int main()
{

	cl_int error;
	cl_platform_id *platform_ids = NULL;
	cl_device_id *device_ids = NULL;
	cl_uint platform_id_count = 0;
	cl_uint device_id_count = 0;
	cl_context_properties context_properties[4];
	cl_context context;

	clGetPlatformIDs (0, NULL, &platform_id_count);
	if (platform_id_count == 0)
		return -1;

	platform_ids = (cl_platform_id*) malloc(platform_id_count *
						sizeof(cl_platform_id));
	if (platform_ids == NULL)
		return -1;

	clGetPlatformIDs (platform_id_count, platform_ids, NULL);

	printf("Platforms available: %u\n", (unsigned int)platform_id_count);


	clGetDeviceIDs (platform_ids[0], CL_DEVICE_TYPE_ALL, 0, NULL,
			&device_id_count);
	printf("Device in Platform 0 count: %u\n", (unsigned int)device_id_count);

	if (device_id_count == 0)
		return -1;

	device_ids = (cl_device_id*) malloc(sizeof(cl_device_id)*device_id_count);

	clGetDeviceIDs (platform_ids[0], CL_DEVICE_TYPE_ALL, device_id_count,
			device_ids, NULL);

	context_properties[0] = CL_CONTEXT_PLATFORM;
	context_properties[1] = (cl_context_properties)platform_ids[0];
	context_properties[2] = context_properties[3] = 0;


	context = clCreateContext (context_properties, device_id_count,
				   device_ids, NULL,
				   NULL, &error);

	return 0;
}