/*
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* cl_device.h - CL device
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*
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* Copyright (c) 2015 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Author: Wind Yuan <feng.yuan@intel.com>
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*/
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#ifndef XCAM_CL_DEVICE_H
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#define XCAM_CL_DEVICE_H
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#include <xcam_std.h>
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#include <xcam_mutex.h>
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#include <CL/cl.h>
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namespace XCam {
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class CLContext;
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struct CLDevieInfo {
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uint32_t max_compute_unit;
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uint32_t max_work_item_dims;
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size_t max_work_item_sizes [3];
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size_t max_work_group_size;
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uint32_t image_pitch_alignment;
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CLDevieInfo ()
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: max_compute_unit (0)
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, max_work_item_dims (0)
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, max_work_group_size (0)
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, image_pitch_alignment (4)
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{
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xcam_mem_clear (max_work_item_sizes);
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}
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};
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// terminate () must called before program exit
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class CLDevice {
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public:
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~CLDevice ();
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static SmartPtr<CLDevice> instance ();
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bool is_inited () const {
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return _inited;
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}
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const CLDevieInfo &get_device_info () {
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return _device_info;
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}
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cl_device_id get_device_id () {
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return _device_id;
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}
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cl_platform_id get_platform_id () {
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return _platform_id;
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}
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char* get_platform_name () {
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return _platform_name;
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}
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SmartPtr<CLContext> get_context ();
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void *get_extension_function (const char *func_name);
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void terminate ();
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private:
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CLDevice ();
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bool init ();
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bool query_device_info (cl_device_id device_id, CLDevieInfo &info);
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bool create_default_context ();
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XCAM_DEAD_COPY (CLDevice);
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private:
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static SmartPtr<CLDevice> _instance;
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static Mutex _instance_mutex;
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char _platform_name[XCAM_CL_MAX_STR_SIZE];
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cl_platform_id _platform_id;
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cl_device_id _device_id;
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CLDevieInfo _device_info;
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bool _inited;
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//Mutex _context_mutex;
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SmartPtr<CLContext> _default_context;
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};
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};
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#endif //XCAM_CL_DEVICE_H
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